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Category: Plastic Extruder Machinery India

Plastic Recycling Granules Making Machine

September 14, 2017 • Mrunal Ramanuj

Plastic Recycling Granules Making Machine

Plastic Recycling Granules Making Machine India

Plastic Recycling Granules Making Machine Exporter

Plastic Recycling Granules Making Machine Manufacturer

Plastic Recycling Granules Making Machine Line

Plastic Granules Making Machine

Plastic Reprocess Plant

Plastic Dana Making Machine

Plastic Waste Reprocess Plant

Plastic Dana Machine

Recycling Machine India

Plastic Processing Machine India

Plastic Recycling Machine

Plastic Granules Making Plant

Plastic Processing Machine

Ocean Extrusions Pvt Ltd offers various models for palletizing plant to make granules form resin in various range in screw diameter 75mm, 90mm and 100mm with / without vent system screw and barrel, die and pattletizer.


  • Material: All kinds of plastics waste.
  • Online Force Feeding Film Trim, Tape Trim without cutting aglometer.
  • For the plastic waste of higher moister, heavy printing, heavy contamination.

This plastic reprocess machine is used to process PET and polyethylene plastic waste to recover the scraps and byproducts at the end of plastic fabrication. PET reprocess plant and PE reprocess plant are the two extrusion machineries with plastic extruder are widely used in plastic extrusion process.

Reducing plastic wastes by recycling process is a great help to save environment. There are list of re process plant than can be chosen from and PP/HDPE reprocess machine is one among the best choices. PP/HDPE reprocess plant can be fed with plastic and raffia wastes and this plastic reprocess machinery stays a cost effective solution that can be applied to make quality ropes, molded components and yarns. This equipment is compatible to accept ingredients including BOPP waste, HDPE wastes and polypropylene residues as well.


woven sack Raffia Tape Stretching Line India

July 8, 2014 • Mrunal Ramanuj

blown film making machine INDIA

June 27, 2014 • Mrunal Ramanuj

extrusion coating lamination machine india

June 19, 2014 • Mrunal Ramanuj

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Extrusions Coating Paper Lamination Plant coating machine for woven sacks, bopp,

June 7, 2014 • Mrunal Ramanuj

Extrusions Coating Paper Lamination Plant coating machine for woven sacks, bopp, 


High density polyethylene of HDPE woven sacks have become a versatile commodity in the
packaging industry. Introduced for the first time in India during the year 1969 it has over the years
replaced the conventional jute bags to a large exte`nt. HDPE sacks have an edge over the
conventional jute sacks in the sense that the former are light in weight, strong and attractive.
These sacks are immune to the effect of corrosion, decay, moisture, atmosphere, rats, rodents,
moths and insects. Being superior in quality and economic to the traditional jute material, these
modern sacks have gradually captured a large market for packing fertilizers, chemicals, food
stuffs, animal foods, oil cakes etc. Sacks made of HDPE are laminated with low density
polyethylene inside it. This gives protection against moisture, air and the material packed cannot
penetrate out of the sack.

Market Potential:
The primary requirement of sacking in India is for packaging of fertilizers, pesticides, chemicals,
oil seeds and good grains. The total demand at present is estimated to be around 3000 million
sacks per annum. The current sales of HDPE resins for woven sacks is around 20,000 M.T.A. or
approximately 154 million sacks. For jute sacking the sales is around 12 lakh tones per annum or
2460million sacks. This still leaves a deficit of about 400 million sacks. Therefore, HDPE sacks
rather than competing with jute sacks would on the contrary supplement the existing deficit in

The main consumer for HDPE woven sacks in the N.E. Region at present is the Hindustan
Fertilizer Corporation Ltd., (HFC), Namrup. The HFC (Stage-I, II & III) has at present an installed
capacity of around 10,00,000 tonnes of Urea and Ammonia Sulphate per annum. On an average
the actual production works out to about 80% of the installed capacity or to about 8,00,000 tonnes
of Ammoniam Sulphate and Urea per annum. The fertilizer produce is packed in bags or sacks in
the quantity of 50 Kgs. or 0.05 tonnes per bag or sack. On this basis the total requirement of bags
or sacks is 160,00,000 Nos. per annum. Out of this requirement more than 50% (80,00,000 Nos.)
is HDPE woven sacks.

At present there is no unit manufacturing laminated HDPE woven sacks in Assam or in any part
of the N.E. Region. As a result the full requirement of laminated HDPE woven sacks are supplied
by manufacturer’s from outside the state and region. Thus 2 – 3 Nos. of laminated HDPE woven
sacks manufacturing units can come up preferably in the states of Assam and Nagaland.

Plant Capacity:
The production basis for a typical tiny unit would be as under:

Working hours/day : 8 (1 shift)
Working days in a year : 300
Annual Production capacity : 7,00,000 Nos.of laminated
HDPE woven sacks.

The unit has been assumed to operate at 70%, 80% and 90% of its installed capacity in the first,
second and third year and onwards of its operation.

Raw Material:
The main raw material required for manufacturing laminated HDPE woven sacks is HDPE of GF
– 7745 F grades. The other chemicals required are LDPE (18 LA 060 grade) and colour for
printing. LDPE is used in the laminating process or in the extraction coating process in providing
a lining of LDPE to the woven material. The colour is utilized in printing the name of the unit etc.
whose product is to be packed. The annual requirement of HDPE, LDPE and colour at 100%
capacity utilization is as follows:
HDPE : 80,000 Kg.
LDPE : 23,000 Kg.
Colour : Rs. 0.50 per Kg. HDPE requirement


This video caters details about Extrusion Coating Lamination machine that is used for ldpe Coating Lamination, pp coating, pet Coating lamination, woven sacks, paper with Aluminium Foil Coating, bopp lamination with BOPP Film Coating extrusions lamination, metalized Polyester Coating Paper, Cotton Fabric Coating Paper with HDPE Woven Fabric Coating. Further more information visit at Circular Woven Fabrics, for producing multi layer laminates up to 5 layers along with the various substrates like Paper, Aluminum Foil, Polyester film


June 1, 2014 • Mrunal Ramanuj


<s0″>pan style=”font-size: xx-small;”>CO-EXTRUDED MULTILAYER FILM

Location of the unit:

         Location of the unit must be based on availability of infrastructural facilities such as electricity, water, transport & communication, bank etc. are also available. 900 ft² additional shed making a total plinth area of 1800 ft². to accommodate the project.

Plant & Equipment:

         Principal items of plant and equipment needed for the manufacture of co-extruded blown film is as follows: –

i) Co-extrusion film plant
ii) Corona surface treating equipment
iii) Rotogravure printing machine
iv) Co-extrusion film plant

         Co-extrusion means, combining more than one material by means of plasticizing extrusion into a unit structure in such a way that the materials will constitute distinct layers. As the co-extrusion technique is relatively a new one, special care is to be taken in the selection and procurement of the plant.

The plant essentially consists of two single screw extruders, a control panel with separate thyrister control panel for each drive motors and a heating panel for all zone heaters, film die assembly, air cooling ring and blowers, an oscillating platform which can oscillate through 300 each way, take off tower unit, trimming attachment, a two station surface winder having a roller width of 800 mm. The machine and equipment are suitable for operation on 400/440volts, 3 phases with neutral 50 cycles AC supply. All electrical heaters are single phase but the load is distributed for 3-phase supply through control cabinet. Total power load required is 85 The Magnificent Seven 2016 film now

Corona Surface treating equipment:

         Plastics in general and polyolefin’s in particular have got a tendency to reject printing inks from their un-polarized surfaces. Hence it is necessary to polarize the surface of the film by this pre-treatment so that during printing the necessary level of adhesion is achieved.
This equipment consists of a solid-state theater, HT transformer, and special oil for above transformer, enclosed type roller assembly, an extra pair special dielectric sleeve, one extra zone extraction unit etc/

Rotogravure printing machine:

         The printing machine is specially designed in such a way that all the printing units are identical with the possibility that additional color can be attached. The machine is equipped with DC motor coupled to a thyrister converter to operate on AC mains.

Raw materials:

         Plastic raw materials such as LDPE, LLDPE, HDPE, PP, and Nylon etc. can be used for the manufacture of co-extruded film depending upon the end use of the product. Since milk pouches are generally a two-layer film (LDPE/LDPE) and the project envisages production of plastic film for milk pouches, the requirement is only LDPE. The other important raw materials required are butanol, solvent IPA and gravure printing ink.

Marketability and Scope:

         Co-extruded films find extensive use in the manufacture of pouches for packaging of various edible consumer items like milk, ghee, oils, snacks etc. It is estimated that in India about 80% of co-extruded films are being consumed for milk pouches and ghee pouches. The market for blown films is expanding and it is envisaged that more and more items would be brought under this material for packaging purposes.

Basis and Presumptions:

        The efficiency of the unit is calculated at 80% of the total production capacity.
The unit will work 25 days in a month of 3 shifts and 300 days in a year.
The time period for achieving the full envisaged capacity utilization is one year.
The labor wages are as per the prevailing rates in the market.
The rate of interest for fixed and working capital is taken @ 14%.
The margin money requirement for this project is 25%.
The pay back period of this project is 5 years.
The land area is 500m and the constructed area is 250 m.

Implementation Schedule:

Preparation of project report
2 months
Selection of site
1 months
Registration as SSI
1 weeks
Acquiring loan
3 months
Machinery procurement, erection and commissioning
2 months
Recruitment of labors etc.
1 months
Trial runs
1 months

Process of Manufacture:

        Raw materials are fed into the hopper, which gets heated in the barrel with the help of the heater
The melt in the extruders is conveyed forwarded by the screw rotation
The 2 extruders individually feed the 2 channels within the die
All the flow channels coverage into a single flow channel, just a little distance before the material is blown out from the annular die orifice
The rotating die ensures even distribution of the melt flow while coming out of the die orifice
The rotating die ensures even distribution of the melt flow while coming out of the die orifice
The bubble is cooled by means of air circulation arrangements
The pre-determined size of the blown film is obtained by inserting compressed air through the die.
Iris rings, flattering boards, counter rotating nip rolls draw the film upwards and flatten it into a two layer lay flat film, which is wound on the winder.
The film is also treated with corona discharge equipment and then printed in rotogravure printing machine in desired colors.

Quality Control and Standards

         IS 10141: 1982/1997 or as per customers specification

Production Capacity (per annum)

        a)         Quantity      630 MT
b)         Value         441.00 lakhs

Motive Power

         The total connected load of the unit is 150 KWH. Assume 60% utilization of the connected load.

Pollution control:

         This unit has not been identified on the pollution making industry. However, proper ventilation of the working shed may be assured.

Energy Conservation

         Production by proper planning may save the energy.

Financial Aspects

A. Fixed Capital
i) Land and Building

Rate Rs. / m
Value (Rs.)
Working Shed
Offices and Stores

         ii) Machinery and Equipments

Qty. (Nos.)
Values (Rs.)
Co-extrusion Blown film plant
Corona surface treatment plant
Rotogravure machine
Slitter-cum- re-grinder machine
Testing equipment
Electrification and Installation charges @ 10% of cost
Total cost of machinery and equipment
Cost of office equipment, working table etc.

         iii) Pre-operative Expenses: 20,000
Fixed Capital = 43, 20,000/-

B. Working Capital (per month)

i) Personnel

Salary (Rs.)
Total (Rs.)
Machine Operator
Skilled Workers
Unskilled Workers
Perquisites @ 15% of salaries

ii) Raw materials including Packaging requirement (PM)

Rate / Kg.
Values (Rs.)
Printing Ink
Packaging Material

iii) Utilities (per month)

        Power 96 KW x 500 hrs. x Rs.4 x 0.6 utilization———- 1,15,200
Water —————————————————–2,000
        Total —————————————————————-1,17,000

iv) Other Expenses (per month)

Other contingent expenses (per month)
Postage and Stationery
Consumable Store
Repair and Maintenance
Transportation Charge
Advertisement and Publicity

v) Total Recurring Expenditure

Staff & Labor
Rae Material
Other expenses
For 3 Months

C. Total Capital Investment

        1. Fixed Capital —————–43, 20,000
2. Working Capital ————–86,46,000
Total —————————-1,29,66,000

Machinery Utilization

        Co-extrusion process will be the bottleneck operation for this project. The production capacity is 105 kegs. /hr.

i) Cost of Production (per year)

Cost of Production (per year)
Total recurring cost
Depreciation on machineries @ 10%
Depreciation on office equipment @ 20%
Interest on total capital investment @ 14%

ii) Turnover (per year)

Rate / Kg.
Value (Rs.)
Co-extruded film

iii) Net Profit (per year)

        Turn over – cost of production = 4,34,50,000 – 3,68,33,000
= 66,17,000

iv) Net Profit Ratio

        Net Profit per year x 100 / Turnover

        = 66, 17,000 x 100 / 4,34,50,000

        = 15.23 %

v) Rate of Return

        Net profit per year x 100 / Total Investment

        = 66, 17,000 x 100 / 1,29,66,000

        = 51.03 %

VI) Breakeven Point (% of Total Production Envisaged)

Fixed Cost
Depreciation on machinery and equipment
Depreciation on Office Equipment
Interest on Capital Investment
40% of Salary and Wages
40% of other expenses

B.E.P. = Fixed Cost x 100 / Fixed Cost + Profit

        = 28,85,000 x 100 / 28,85,000 + 66,17,000

        = 28,85,000 x 100 / 95,01,740

        = 30.36 %


Blow extrusion of plastic film

The manufacture of plastic film for products such as shopping bags and continuous sheeting is achieved using a blown film line.

This process is the same as a regular extrusion process up until the die. There are three main types of dies used in this process: annular (or crosshead), spider, and spiral. Annular dies are the simplest, and rely on the polymer melt channeling around the entire cross section of the die before exiting the die; this can result in uneven flow. Spider dies consist of a central mandrel attached to the outer die ring via a number of “legs”; while flow is more symmetrical than in annular dies, a number of weld lines are produced which weaken the film. Spiral dies remove the issue of weld lines and asymmetrical flow, but are by far the most complex.

The melt is cooled somewhat before leaving the die to yield a weak semi-solid tube. This tube’s diameter is rapidly expanded via air pressure, and the tube is drawn upwards with rollers, yielding the plastic in both the transverse and draw directions. The drawing and blowing cause the film to be thinner than the extruded tube, and also preferentially aligns the polymer molecular chains in the direction that sees the most plastic strain. If the film is drawn more than it is blown (the final tube diameter is close to the extruded diameter) the polymer molecules will be highly aligned with the draw direction, making a film that is strong in that direction, but weak in the transverse direction. A film that has significantly larger diameter than the extruded diameter will have more strength in the transverse direction, but less in the draw direction.

In the case of polyethylene and other semi-crystalline polymers, as the film cools it crystallizes at what is known as the frost line. As the film continues to cool, it is drawn through several sets of nip rollers to flatten it into lay-flat tubing, which can then be spooled or cut.

Sheet/film extrusion

Sheet/film extrusion is used to extrude plastic sheets or films that are too thick to be blown. There are two types of dies used: T-shaped and coat hanger. The purpose of these dies is to reorient and guide the flow of polymer melt from a single round output from the extruder to a thin, flat planar flow. In both die types ensure constant, uniform flow across the entire cross sectional area of the die. Cooling is typically achieved by pulling through a set of cooling rolls (calender or “chill” rolls). In sheet extrusion, these rolls not only deliver the necessary cooling but also determine sheet thickness and surface texture.[6] Often co-extrusion is used to apply one or more layers on top of a base material to obtain specific properties such as UV-absorption, texture, oxygen permeation resistance, or energy reflection.

A common post-extrusion process for plastic sheet stock is thermoforming, where the sheet is heated until soft (plastic), and formed via a mold into a new shape. When vacuum is used, this is often described as vacuum forming. Orientation (i.e. ability/ available density of the sheet to be drawn to the mold which can vary in depths from 1 to 36 inches typically) is highly important and greatly affects forming cycle times for most plastics.

Tubing extrusion

Blown Film Plant

Mono Layer Blown Film Extrusion Lines, Extrusion Machine

May 29, 2014 • Mrunal Ramanuj

  Mono Layer Blown Film Extrusion Lines, Extrusion Machine 

Operate A Mono Layer Blown Film Extrusion Lines, Extrusion Machine Operate a blown film extrusion Plant for co-extrusion productionAll Product

What is Blown Film Extrusion?

  • Blown Film Extrusion is one of the most common polymer conversion processes in the world
  • Film is made by extruding molten plastic through a circular die, forming an inflated tubular bubble that moves through a cage as it cools, that is then collapsed and formed into rolls
  • The typical film blowing process consists of a series of stages, including extrusion, blowing, collapsing, and winding

HIPF Course Description

Course Objective

At the end of the course, the trainees will be able to:

  • Develop a working knowledge of and learn how to operate a Blown Film Extrusion machine
  • Understand the basics of blown film technology, the common material used, and some common problem solving situations
  • Analyze and solve practical blown film problems
  • Develop a working knowledge on maintaining a blown film machine

Course Outline

    1. Principles of Blown Film Extrusion


      Definition and Principle; Product and Applications; Film Fabrication Process; Types of Blown Film Machines
    1. Resin Materials for Blown Film


      Raw Materials Use for Blown Film Extrusion; Three Common Polyethylene Grades Used for Blown Film; Suitable Grade index for Blown Film
    1. Safety Education for Blown Film Operation


      Safety Guideline and SOP; Personal Protective Equipment (PPE); Safety Devices; Warning Signs; Safety Rules for Operation; Safety Instructions on Operation
    1. The Main Components of Blown Film Machine


      The Extruder; The Die Head and Die; The Bubble Cooling System; Bubble Stabilizer; The Take-Off System/Pinch or Nip Rolls; The Wind-Up System; Corona Treatment
    1. Die and Air Ring as Major Components for Blown Film


      Kinds of Die for Blown Film; Details of Die and How It Works; Details of Air Ring and How It Works; Die and Air Ring Care and Maintenance
    1. Introduction to the Blown Film Extrusion Machine


      BFE Process Flow; Start-Up of Blown Film Line; Quality Control for Blown Film; Scheduled Shut-Down of Blown Film Line; Emergency Shut-Down of Blown Film Line; Switching On After Emergency Stop
    1. Operating Skills for Blown Film Extrusion Technology


      Checking of Machine Conditions Before Operation; Winder Preparations; Film Guide Set-Up and Importance; Blown Film Run Preparations; Die Checking and Adjustments; Parameter Setting-Up; Switching On After Emergency Stop; Changing Die; Changing Materials and Filling Procedures
    1. Die Dismantling, Cleaning and Mounting


      Die Dismantling Procedure; Die Cleaning and Care; Understand Die Assembly and Mounting
    1. Blown Film Extrusion Troubleshooting


      Types of Trouble of Blown Film Process; Unstable Bubble; Film Appearance; Machine Malfunction
    1. Common Secondary Film Processing Methods


      Printing; Bag Making Process; Scrap Recycling
    1. Quality Control of Blown Film


      Quality Check for Blown Film; Production Recording; How To Report the Result of Manufacturing
  1. Practice Plant Operations


provides the blown film industry with the latest in high “value added” technologies. Since 1989, DRJ has established industry standards in internal bubble cooling (IBC) control, width control, and machine direction sealing technologies and continues to develop innovations that make our customers more competitive and more profitable.

The quickest way to get to know about us is to view this 4 minute video. It describes our company, our industry and how our products ensure that you add value to your bottom line.

Next if you are interested in IBC technology, click on the Getting Started link below. You can also click on the blown film line picture to see specific details. Don’t forget our Products link to see everything we do to provide solutions not just answers for your blown film processing requirements.Blown Film Extrusion Line


  1. This processing guide focuses on how to produce films made from either high density polyethylene (HDPE) or linear low density polyethylene (LLDPE) resins. 

    The HDPE FILM Resins section covers key terms and experience specific to polyethylene resins in

    general, and HDPE resins specifically. It is organized into five subsections:

    B. C. D. E.


    Blown Film Extrusion

    Blow-Up Ratio

    Extrusion Conditions

    Processing Conditions

    Extruder And Die Temperature Settings
    The LLDPE Film Resins section covers key terms and experience specific to LLDPE resins. It is organized

    into two subsections:

    A. Blown Film Extrusion

    B. Extruder And Die Temperature Settings


    In addition, Table 1 presents a very useful polyethylene film processing troubleshooting guide.


    The information, terminology and experience provided in this guide compile many years of technical

    and operational knowledge into one handy resource, useful in most situations most of the time. For

    more in-depth processing and troubleshooting assistance,


Polyethylene Film Processing Guide





high density polyethylene (HDPE) resins for

mainly blown film applications. The workhorse of Formosa Plastic’s HDPE film resins is the Formolene®

High Molecular Weight High Density Polyethylene (HMW-HDPE) resin product line, which is produced

using a unique Nippon Petrochemical bimodal process. These HMW-HDPE film products are designed to

have a broad, bimodal Molecular Weight Distribution (MWD) that provides both excellent extrusion processing and physical film properties.


Formosa Plastics also produces a family of conventional HDPE film resins from

process. These HDPE film resins from this process are categorized into two types of resins: Medium Molecular Weight High Density Polyethylene (MMW-HDPE) film resins and MMW-HDPE Moisture Vapor Transmission Rate (MVTR) barrier film resins.


HMW HDPE film resins range in density from 0.949 to 0.953 with a melt

index ranging from 0.040 to 0.15. These resins are designed with different melt index, density and/or additive packages for a variety of applications. Technical Data Sheets for these products are available at


Films produced with HMW and MMW HDPE resins exhibit high impact and film stiffness, as well as good

tear strength and excellent tensile strength. The combination of a broad, bimodal MWD, low melt index

and high density of the Formolene® brand HDPE film resins provide an excellent balance of film performance properties for a variety of film applications.


HDPE film resins are easily processed into very thin gauge films as low as 6 microns

(0.25 mils), as well as into heavy gauge films on the order of 96 microns (4.0 mils) or greater. The

broad MWD of Formolene® brand HDPE film resins enables them to be processed at lower melt

temperatures than competitive HMW HDPE blown film resins. This provides for better bubble stability and gauge control, as well as improved energy savings.


HDPE film resins are designed with excellent stabilization packages to protect the

integrity of the polymer from degradation, especially for applications requiring a high level of trim

recycle such as grocery bags commonly referred to as “T-Shirt” bags due to their resemblance to the undergarment.

Polyethylene Film Processing Troubleshooting Guide
Common film processing problems and possible corrective actions
1. Low Dart Impact 5. Gels, Holes, Bubble Breaks 9. Low Extruder Output
2. Low MD Tear; Split Film 6. High Gauge Variation 10. High Extruder Pressure
3. Melt Fracture 7. Die Line 11. Poor Roll Geometry
4. Poor Bubble Stability 8. Port Line
Abbreviations: BUR = Blow-Up Ratio MD = Machine Direction MI = Melt Index
Problem Observed Possible Causes Possible Corrective Actions
1. Low Dart Impact 1. High melt temperature
2. Inadequate cooling
1. Reduce melt temperature
2. Increase cooling, neck height, BUR
2. Low MD Tear / Split Film 1. Too much film orientation
2. Resin density too high
3. Thermal degradation of the
polymer during extrusion
1a. Increase BUR
1b. Decrease die gap
1c. Increase frost line height
2. Use a lower density resin
3a. Decrease melt temperature
3b. Add an antioxidant masterbatch
3. Melt Fracture 1. Low extrusion temperature
2. Inadequate die gap
3. Excessive friction at die lip
4. Resin MI too low for extrusion
conditions or equipment
1. Increase melt temperature
2. Increase die gap
3a. Lower processing rate
3b. Add processing aid to reduce COF
4. Use a higher melt flow resin
4. Poor Bubble Stability 1. Melt temperature to high
2. Too much or too little cooling air
3. MI too high for process
4. Output rate too high
5. Misalignment of nip rolls
1. Reduce melt temperature
2. Adjust cooling air
3. Lower processing rate
4. Reduce output rate
5. Realign nip rolls
5. Gels, Holes, Bubble Breaks 1. Contamination
2. Excessive regrind or reprocessed
3. Dirty screw, die or screen pack
4. Poor mixing
1. Check for contamination in silos, transfer
systems, colors and other masterbatches
2. Stop or reduce the ratio of regrind and
reprocessed material until problem improves
3. Clean screw and die plus change screen pack
4a. Check screw
4b. Check heater bands and thermocouples
6. High Gauge Variation 1. Dirty screw, die or screen pack
2. Uneven cooling
1a. Clean screw and die plus change screen pack
1b. Clean die
2. Check temperature settings & recalibrate
7. Die LIne 1. Dirty or damaged die lip
2. Insufficient purging
1. Clean or repair die
2. Increase purge time between transitions
8. Port lines 1. Resin viscosity too high for die
2. Die and melt temperature off
3. Melt temperature too low
1a. Use a resin with a higher MI
1b. Consider using a processing aid
2. Narrow the temperature differences between
the die and polymer melt temperature
3. Increase the melt temperature
9. Low Extruder Output 1. Melt temperature too high

1a. Reduce melt temperature.
1b. Check external cooling.
1c. Check extruder screw wear.
10. High Extruder Pressure 1. Contamination 1a. Check extruder heaters, screen pack.
1b. Check for contamination.
11. Poor Roll Geometry 1. Poor bubble stability 1a. Reduce melt temperature.
1b. Increase cooling, die temperature.
1c. Clean die. Blown Film Plant














To produce the best physical properties in an extruded film, the proper balance of film orientation in
the machine and transverse direction of a film must be achieved. This relationship is achieved by
adjusting the blow up ratio of the film. The blow up ratio (BUR) is the ratio of bubble diameter to the
die diameter; it indicates the amount of stretching the polymer is undergoing during the shaping of the
Blow Up Ratio (BUR) = (0.637 x Lay-Flat Width) / Die Diameter
 Lay-Flat is the width of the collapsed film
 Die Diameter is the fixed diameter of a given die

The HMW-HDPE blown film lines typically have small diameter dies to achieve the relatively high BUR
ratios required to obtain optimum film properties. Other polyethylene resins, such as low density
polyethylene (LDPE) and linear low density (LLDPE) resins, normally operate at much lower BURs of 2 to
3. The typical die gaps for HDPE blown film lines are 1.0 to 1.5 mm (40 to 60 mils), which are narrower
than die gaps used for conventional LDPE and LLDPE blown film lines.

As shown in Figure 1 below, HDPE blown films lines have a very unique “High Stalk” bubble shape. The
stalk height recommended for HMW HDPE blown film lines is 7 times to 9 times the die diameter. The
characteristic high stalk bubble shape used for HMW-HDPE Blown film production results in a very high
frost line, which is the transitional phase from molten polymer to solid film. A high frost line enables
the polymer to achieve a balance of film properties by imparting more bi-axial molecular orientation in
the film in the transverse direction (TD) to match the machine direction (MD) orientation.

Figure 1

Bi-axial orientation of the polymer molecules in a blown film is important to achieve a balance of the
film’s physical properties. Bi-axial orientation of HDPE blown film is much more difficult than with
either LDPE or LLDPE blown film due to the inherent differences of the polymer structures. Long side
chain molecular branching is prevalent in LDPE and to a lesser degree in LLDPE, but HDPE has very few





Application Development of PPTQ Blown Film Machine; Technology that Takes Your Business to New Heights

March 19, 2014 • Mrunal Ramanuj
woven sack machinery

woven sack machinery

Development of PPTQ Blown Film Machine and its Application

Its application areas include: food packaging industries, hosiery, confectionery, bakery packing, flowers packing, garment packing, lamination film, blood bags and high general packaging film. The machines are developed with different widths depending on various application areas. The manufactures develop supreme quality products that incorporate the latest technological advancements that meet various customers’ needs. The machines are developed per international standards and certified for use in different industries. The machines are developed with customers at heart with utmost energy efficient and give optimum production. Develop with high precision engineering expertise in meeting modern market.

Advance Features and of PPTQ Blown Film Machine

The machine incorporate advanced features like long life service, manual as well as automatic screen, internal bubble cooling, high productivity, high performances, online thickness monitoring control, surface and center winders, constructed with very high quality materials, auto tension control, manual and automatic screen changer, dosing systems, flexibility and grooved feed barrel. The attractiveness of utilization of this film machine for packaging is basically based on various mechanical operations that are being done in the field. The machines are technologically advanced with automatic screen changer that enhances efficiency and easy operation.

Benefits of Using PPTQ Blown Film Machine in Packaging Industries

The machine are manufactured in various combinations such PP and PE grades to meet customer needs and specific requirement. They are very efficient and are of great importance in enhancing quality and adding attractiveness of the packed products. This resulted to increase in production input resulting to profit maximization. The machine reduces the operating work load and increases the production efficiency. The packaging industries deserved a packaging film machine that keeps good safe, environmental friendly, superior quality, reliable, durable and affordable to packing industries.

PP-TQ Blown Film Plant

Technology Advancement and Innovations in PPTQ Blown Film Machine

 Every packaging industry that seek to increase their profits and maximizes on production must use technologically advanced PPTQ blown film machine. Their advance technological features boost high precision, ease operation, quality standards, fast, accuracy, saves time and cost effective as well as consistent performance. The machines are designed by professional who ensures quality, presentable, originality and innovativeness design in meeting customers’ demands.

Cost Advantages and Extra High Performance with PPTQ Blown Film Machine

There are various advantages in which packaging industries can comfortably enjoy while using high quality and extra performing machine for packaging. Its advantages includes: high speed, effectiveness and exceptional high performances. These merits overdo the cost of purchasing this machine.

The Current Market Trends and Demand for PPTQ Blown Film Machine

In the current market trend this machine is geared by inventiveness and originality in meeting the client demand globally. The market trend is very competitive and the manufacture ensures quality design that meets all the client needs and desires. They embrace newest technology to meets the client description requirement with tangible results. Get more details visit at


The PPTQ blown film machines are specialized fabricated with quality standard raw materials. They have embraced latest technological advancements and efficiently integrated them in meeting industrial demand. The offer extensive desirable benefits to the packing industries such as overall cost saving, durability, conveniences, cost effectiveness, user friendly, preserve item for a long time , aesthetics, and add attractiveness to the packed products hence help in maximizing returns.

The Wonders Made in Production of Plastic Extrusion Products

November 29, 2013 • Mrunal Ramanuj

Significant and Efficient Results Obtained from Extruder Machinery

Extrusion is a process in which the raw material is processed in different ways such as melting, shaping, profile making, etc so that the outcome stays as per the industrial requisites. Exclusive equipments are installed to take hold of the process. In recent days recyclable synthetic materials are employed for wide industrial usages and packaging is one among the important usages. Extrusion device helps to obtain efficient results in short time span. For instance, raw plastic can be transformed into plastic sheets as well as other products with the help of extrusion components. The raw plastic ingredient is changed into the desired shape or size in molten condition with the help the extrusion device. Moreover, extrusion of plastic with relevant device can be employed for industries which need large volume of molded products.  Above all, equipments for extruding synthetic materials stay a versatile option because complicated shapes of products can be made quickly.

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Packaging sector has a competitive demand from several industries. Either food industry or small metal parts manufacturing units, or pharmaceutical sectors for instance has different packaging norms which cannot be compromised by conventional packaging materials. Synthetic extrusion gadgets are highly reliable in this regard because extrusion machine components can be added or modified to bring out variable dimensions of products such as single or double layer extrusion material, multiple layered or profile shape products, etc. In addition, certain industries like pharmaceuticals have unique specifications for their covering requisites, for them extrusion device with co-extrusion component will stay a suitable option. For processed food packing, plastic sheets with special coating might be required to keep up the properties of the products without changing; hence, extrusion apparatus that forms synthetic coating might stay useful. Similarly, for every specific industrial requirement manufacturers try to compensate in the design of the extrusion apparatus by modifying the productivity and dimensional capacity of the device.

Slitter & Rewinder Machine

How Extrusion Machinery is modified for Producing Custom Flexible Wrapping Ingredients?

Flexible box up material is considered as one of the recent innovative inventions for a cost effective and safe packing process. When it comes to fulfilling production demand for making custom made wrapping products, selection of extrusion apparatus stays a major concern. Hence, these equipments are made to provide different functionality; such as,

  • Blown Film Manufacturing Equipment-Blown material is suitable for bounding up groceries, food items.
  • Co-Extrusion apparatus is designed to produce multi-layered sheets for packaging.
  • Adhesive on lamination coating machinery is useful in producing printed packaging films for different types of products as well as matching resistant properties.
  • Slitter rewinder device helps in producing synthetic bags of different thickness and dimensions.


Extrusion equipments are certainly boosting factors for the packaging industry. A custom made extrusion apparatus invested is a cost effective and profitable option. Hence, investing over extrusion devices will surely fetch you wonderful business experience over a moderate investment. Moreover, for large scale production requirement buying machinery is a better option than to order for extruded products.

Enhance Your Manufacturing Potential and Maximize Returns with the Plastic Extruder

November 1, 2013 • Mrunal Ramanuj

Production of plastics can be done through various processes .These include blown film process, extrusion blow techniques, injection molding ,stretch blow molding, rotational molding, machining and even thermo molding. Each of these modes of manufacturing has specific advantages in relation to the desired final products.

The plastic Extrusion process

The extrusion process involves use of a thermoplastic material that is in form of pellets, granules or even powder. Raw material is heated to form a uniform molten liquid in the extruder machine. The molten liquid is forced under pressure through a die opening to create the shape of the final product.

The resulting form is pulled from the die from the exit side carefully. The resulting product is sliced into specific lengths or wound depending on the specifications. Further processing can be done to customer requirements such as threading.

The most important characteristic of the extrusion process is that the products have a uniform cross section as opposed to injection molding, which gives products with varying cross sections.

The machinery involved in the extrusion includes pellets handling equipment for conveying the raw materials to the extruder, heating system, the molding block and the extrusion assembly.

Additives such as lubricants, stabilizers, colorants and anti oxidants can be added to the raw materials to improve their physical qualities such as color, strength and even the flexibility of the product.

The main purpose of the extruder is to develop a uniformly melted material at a constant rate and pressure and maintain constant temperature. These specifications are crucial because slight variations affect the quality of the product.

Products Made through the plastic extrusion process

  • Tubing and hollow pipes; PVC pipes and tubes have a uniform cross section and they are made using the extruder machine. The size of the extruder is dependent on the size of the product.
  • Solid Rods; these are further used as raw materials for production of other plastic products. They may be square, round, or even hexagonal blocks as long as the cross section is uniform.
  • Sheet formations: These are products such as machine guards and windows glazing which are resistant to impact.
  • Manufacture of Shapes with extended uniform cross section such as vehicle wipers and house gutters .
  • Production of electrical cable insulation also utilizes the extrusion process.

Contribution of the Plastic Extruder in the Manufacturing Industry

The extrusion process is one of the most important processes of plastic manufacture. The process is fast and easy to customize to product specifications. It is also easy to implement and with proper calibration, it produces very high quality components.


The plastic extruder is a machine used in manufacture of uniform cross section plastics such as pipes, tubing, sheet plastics and even plastic rods. The extruder must deliver a uniform molten resin at a constant temperature for high quality product.

The extrusion process involves filling molten plastic into a mould and allowing it to solidify. The product is then drawn from the mold to give long uniform cross section product.

This process is one of the most important processes in plastics manufacture with wide spread usage and produces high quality products.

Role of Plastic Extruders in Different Extrusion Techniques

July 8, 2013 • Mrunal Ramanuj

What is a Plastic Extruder?
Plastic extrusion refers to the conversion of a thermoplastic polymer to a certain shape and/product. Pipes and sheets are the common products of extrusion. The part of the machine that melts solid polymer fed into it before the melt is taken to form a product is known as a plastic extruder. The plastic extruder is only part of the plastic extrusion machinery and has other roles apart from forming a plastic melt. It can mix the plastic polymer with one or more additives, including mineral fillers and colors, for example. In other cases, reinforcing fibers can be added into the mixture. The extruder ensures that these and/or other additives and ingredients are evenly distributed in the mixture.

A plastic extruder must supply the die with a melt of consistent temperature and pressure as it moves to the die for shaping. In plastic extrusions machinery, plastic extruders are of various sizes, described by barrel or screw diameter.

Different Types of Plastic Extruders and their role in various extrusions methods

In extrusion of plastic, extruders can either be single-screw or twin-screw/multiple screw. A screw rotates to transport and compress the polymer from feeder base into the extruder for melting, and then to the adapter and die. It has the mixing, compounding and metering sections. In single-screw plastic extrusion machinery, only one screw is used while two/many are used in twin-screw plastic extrusion machinery. The single-screw type is useful in production of films, sheets and other products from pre-compounded pellets. In multiple-screw type of plastic extrusion machinery, the screws that are arranged together could be rotating in the same (co-rotating) or different (counter rotating) directions.

In co-extrusion, molten polymer emanating from multiple extruders is combined such that the product has more than one layer of the extrudate. In most cases, co-extrusion is helpful in surrounding recycled resin with virgin resin. A profile die receives the extrudate from twin or single-screw extruders in profile extrusion machinery. Profile extrusion machinery can produce flat, flexible, rigid, HIPS and Vinyl siding profiles.

Offset extrusion works mostly with profiles and the person works with planes. Offset extrusion refers to creation of special profiles using a extrusion software where a second plane is created off the main plane, the two differing in measurements. Cold extrusion is where the temperature kept low during extrusion process. They can be parallel or conical. Ram extruders in ram extrusions machinery are used to manufacture continuous profiles from high molecular weight polymers using pressure. Ram extruders in ram extrusions machinery uses pressure-sintering technique like in sintered metal production because of high melt viscosity possessed by the polymers being extruded.

The demand of extruder & plastic extrusion machinery in Local & Global Market

Most plastic products are cheaper than metal products. This alone has made the local and global demand for plastics continue to increase, with global demand set to increase at 6.2% annually through to 2017. This has forced more manufacturers into the business, hence the demand for extruders and plastic extrusion machinery is high. The global demand for plastic processing machinery will increase by 6.0 percent annually to 2015, with Extrusion equipment recording the largest gains, according to projections. Besides, plastic products are more common because they are lighter, easier to handle and use, as well as easier to recycle compared to metals.


There are different types of extruders used in melting polymers and mixing them with various ingredients before the melt is taken for shaping in the die. These include the single-screw and multiple-screw. In addition, various methods of extrusion employ various techniques in manufacturing plastics, including co-extrusion, offset extrusion, overcoat extrusion, cold extrusion and ram extrusion. The global and local demand for plastic extrusion machinery is increasing because of increasing demand for plastic products.

Slitter and Rewinder Machine, Rotogravure Printing Machine, Plastic Extruder

February 11, 2012 • Mrunal Ramanuj

Technology in Plastic Processing, Printing and Packaging Machinery
Over the years, the technology in machineries used for plastic processing, printing and packaging machinery has changed a lot. It is undeniable that each and every product requires printing and packaging and the trends regarding the same are changing everyday. The demands of attractive and safe packaging are increasing and so the new technology machines are required by the industries. To fulfil these demands, the manufacturers of plastic processing, printing and packaging machinery are coming up with new technology machines which are of international standards. Below mentioned are some of the latest technology machines which have made the plastic processing, printing and packaging easier in the industries.

Slitter and Rewinder Machine
Slitter and rewinder machine is a special kind of machine which is used in converting industries and paper industries. This machine is able to work with almost any material including paper, plastic, laminating films and anything you need that may be associated with packaging any type of goods and materials for business.

Rotogravure Printing Machine
In modern times rotogravure printing machine is considered as the fastest and widest machine which is capable of printing almost everything, right from narrow labels to wide rolls of vinyl flooring. Rotogravure printing machine includes the process of printing which involves engraving or transferring an image onto an image carrier with the help of a rotational printing press. The rotogravure printing machines are usually used in printing and packaging industry as it is fast, reliable and featuring options of front & reverse printing facility. Rotogravure printing machine is well known for its high performance and low waste.

Plastic Extruder
Plastic extruder is used to manufacture plastic products used in packaging of different kinds of products. The plastic extruders are highly efficient and well known for high output, low energy consumption and low manufacturing cost. In our day to day life, we rely very much on plastic extruders as so many plastic products are manufactured with the help of this machine. Plastic extruders help in moulding plastic as per the required shape and size of the product.

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Extrusion Machines, Plastic Extruders, Rotogravure Printing Machine, Slitter and Rewinder Machine, Adhesive Coating Machine, Blown Film Plant

January 20, 2012 • Mrunal Ramanuj

Extrusion Machines
The products manufactured from extrusion machines are the necessities of our daily life. Our basic requirements like toothbrush, pen etc. is made from machines itself. Some of the machines manufactured in India and having huge demand amongst various industries are briefed below:-

Plastic Extruders
The plastic extruder converts plastic materials like plastic chips or plastic pellets from solid to liquid form and then reconstitutes them in final shape of finished product.

Rotogravure Printing Machine
The Rotogravure printing machine is a type of intaglio printing process; which involves engraving the image onto an image carrier. In gravure printing, the image is engraved onto a cylinder because, like offset printing and flexography, it uses a rotary printing press. Once a staple of newspaper photo features, the rotogravure process is still used for commercial printing of magazines, postcards, and corrugated (cardboard) product packaging.

Slitter and Rewinder Machine
The slitter and rewinder machine is used to manufacture flexible packaging material. There are different models and kinds of slitter machines that you can buy in the market. You will surely find one that can suit your budget and your company needs.

Adhesive Coating Machine
The adhesive coating machine is suitable for the double -layer and multiple layer lamination of such roll film materials as BOPP, PET, Nylon, CPP, CPE, aluminium foil and paper etc. Adhesive coating machine or adhesive coating plant, also known as Adhesive lamination plant or adhesive lamination coating plant is highly used in flexible packaging industry.

Blown Film Plant
Blown film plant, blown film line machines are used for various plastic extrusion processes for production of high volume quality blown film. In this process raw plastic material is melted and formed into a continuous profile by high end plastic extrusion machines. Blown film line machines are available based on various extrusion process, like mono layer blown film plant, multi layer blown film plant, co-extrusion two layer blown film plant to produce variety of packaging materials for foodstuff, clothing, Medical, Pharmaceutical and other packaging industries.

Extrusion Machinery Exporters are making a conscious effort to put their best foot forward with the help of latest technologies to tap the upcoming opportunities all over the world.

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Extruder, Plastic Extrusion lamination coating machine india

January 20, 2012 • Mrunal Ramanuj

Extruder, Plastic Extrusion lamination coating machine india

An extruder is a machine which performs the process of extrusion. Extrusion is the process which begins by heating the stock material which includes metals, polymers, ceramics, concrete and foodstuffs. A material is pushed or drawn through a die of the desired cross-section. The two main advantages of this process over other manufacturing processes are its ability to create very complex cross-sections and work materials that are brittle, because the material only encounters compressive and shear stresses. It also forms finished parts with an excellent surface finish.

Plastic Extruder
Plastic extruder performs plastics extrusion, a high volume manufacturing process in which raw plastic material is melted and formed into a continuous profile. Plastic extruder produces items such as pipe/tubing, weather stripping, fence, deck railing, window frames, adhesive tape and wire insulation. In the plastic extrusion, raw thermoplastic material in the form of small beads which is also called resin, is gravity fed from a top mounted hopper into the barrel of the plastic extruder. Additives such as colorants and UV inhibitors (in either liquid or pellet form) are often used and can be mixed into the resin prior to arriving at the hopper. There are different types of plastic extruders also known as plastic extrusion machinery which are used in various industries mentioned below:-

  • Raffia tape stretching machinery is known for versatility, productivity and perfect control.
  • The uniquely designed sutli plants are used for manufacturing PP/HDPE sutli used for packaging purposes.
  • HDPE monofilament plants, PP Monofialment plants and Nylon monofilament plants are the best range of monofilament manufacturing machines used to manufacture HDPE filaments, PP filaments and NYLON monofilaments used for preparing ropes, brushes etc.
  • Monolayer blown film plant with the best combinations of technology and performance is low investment, power efficient, high-speed extrusion plants providing increased output on smaller layflat products, creating lower conversion costs and high profits for the processors.
  • The PP TQ blown film plant is best used to manufacture PP films for packaging purposes.
  • Extrusion coating lamination plant is equipped with best features of extrusions coating hangar die, turnbar arrangement and higher output extruder.
  • This best featured extrusion coating plant is mainly used for coating thin layer of polyolefins mainly LDPE/PP on substrates like paper, cotton cloth, woven fabrics, jute fabric, aluminium foil, BOPP film, polyester film up to 3150mm web width applications.

These plastic extruders incorporated with high output extruders, water ring palletisers, air cooled die face cutters, hydraulic operated continuous screen changers and pallet drying systems.

Extrusion Lamination Coating Line

Extrusion Lamination Coating plant india

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How Plastic Extrusion Process Carried out with Extrusion Machinery

December 28, 2011 • Mrunal Ramanuj

How Plastic Extrusion Process Carried out with Extrusion Machinery

Plastic extrusion is the process to define new plastic products of required size and shape through extrusion machinery. You can manufacture various plastic products like piping, wire insulation, plastic sheet, adhesive tape, window frames etc. Plastic granules are melted and reform again by this machinery in required shape and design. In such process plastic granules or plastic raw materials are added to extruder cavity through hopper. In extruder the plastic material needs to be mixed with colorants or UV inhibitors to make them mix and stimulate the melting process. In plastic extruder cavity the temperature is so high that the raw materials molted and generated in liquid form. The temperature in heated extruder cavity is so high upto 400F. Sometimes the temperature goes above the normal required level which can evaporate the liquid. To stop vaporization, it requires to cool down the head to maintain required temperate in heated extruder. Cooling fans are used to cool down and maintain the temperature level. After attaining the required temperature for certain time for liquidation, the extruder screw enhances the pressure to move liquid plastic to the die through proper channel. This die is a frame where it store the liquid plastic material, came out of extruder with pressure. Now liquid plastic has been moved to the die for further looking in sealed water bath to solidify plastic material to form a plastic product. Sometimes dies are passed through special cooling rolls instead of water baths to make the die and product cool fast at required temperature.

There are various types of extrusion machineries having different extrusion process to form plastic like extrusion coating lamination plant in which Extrusion coating is used a blown or cast film process to coat an additional layer onto an existing roll stock of paper, foil or film. For example, this process can be used to improve the characteristics of paper by coating it with polyethylene to make it more resistant to water. Blown film plant is used for blow film extrusion process which is the same as a regular extrusion process up until the die. The die is an upright cylinder with a circular opening similar to a pipe die. The diameter can be a few centimeters to more than three meters across. The molten plastic is pulled upwards from the die by a pair of nip rolls high above the die. There are different types of blown film plants are used in extrusion process like mono layer blown film plant, two layer blown film plant and multilayer blown film plant.

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