PE monolayer film extrusion machine, plant, line, India
PE film with moisture, moisture permeability is small. Polyethylene film (PE) according to different manufacturing methods and means of control, different properties can be produced low density, medium density polyethylene and high density polyethylene crosslinked product.
A density of about 0.92g/cm3. Transparency and heat-sealable low density polyethylene film is good, waterproof, moisture-proof; low tensile strength, tensile elongation, easily wrinkled, film 0.03mm or less, tension control should be small, and the tension around to be constant, more particularly when the heat deformation caused by trapping difficult. Therefore, when dry, the film surface temperature is not too high (at 550C or less). Different film-forming process can be divided into several blown film (IPE), salivation film (CPE), low foaming film. IPE film tensile strength and better opening than the CPE film, using a positive print, can be used for food bags, garment bags, etc.; CPE uniform film thickness, surface gloss, transparency and heat sealing better than PE, can be positive or negative printing, However, high production costs. CPE film is mainly used for the inner and cosmetics, pickles and pastries composite packaging bags; low foaming film decorative, thick texture, easy to tensile deformation, using a positive print, used pictures, trademarks and hand carry bags.
Medium density polyethylene
Its density is about between the high-density and low-density polyethylene is between 0.93 ~ 0.94g/cm3 performance.greenmax machine
High density polyethylene
Density 0.94-0.965g/cm3. High density polyethylene film of heat resistance and mechanical strength of the film is better than the low density polyethylene, the tensile elongation is small, the film thickness is generally 0.03mm or more but poor transparency. Using a positive print, primarily as vest bags, garbage bags and lined bags
Because of its polyethylene product than other higher heat resistance, tensile strength, thermal shrinkage and barrier properties, their use in further expansion, 2014 mostly used as heat-shrinkable packaging film.
Generally, as the density increases, the mechanical properties and barrier properties will be increased accordingly, heat, raw or. Same density polyethylene film due to the different processes, different properties have between them. This is because the rapid cooling method can salivation, low crystallinity, high transparency, low haze, but the arrangement of molecules become more irregular state, the barrier is small, i.e. a larger transmittance,