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blown film extrusion plant Blown Film Making Machine manufacturers

June 6, 2014 • Mrunal Ramanuj

blown film extrusion plant Blown Film Making Machine manufacturers

Complete blown film extrusion lines for mono layer, and complex multi-layer films of HDPE, MDPE, LDPE, LLDPE, EVA, and PP. We have set out various series of specific blown film lines for processing different material and applications.
Blown Film Extrusion Line is the best choice for maximum volume and top quality output. Distinctive new screw design with automatic winder for high capacity output and efficiency.

blown film plant

Two Layer Blown Film Extrusion Lines with the best combination

Blown Film Plant
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Two layer blown film Line has a great demand in global market for its wide range of packaging products that can be produced from it. Two layer blown film machine is an economical solution to create moderate barrier films for shopping bags, crop covers, carry bags used in textile sector, etc. It consumers low power and when it www.oceanextrusions.comcomes to return on investment, packaging industry can made good and fast profit. Similarly, two layer blown film line materials can also be produced from this single plant.

Two Layer Blown Film Extrusion Lines with the best combination of technology and performance. These low investment, power efficient, high – speed plants can give processors the competitive edge and quick return on their investment.
Two layer blown film Line has a great demand in global market for its wide range of packaging products that can be produced from it. Two layer blown film machine is an economical solution to create moderate barrier films for shopping bags, crop covers, carry bags used in textile sector, etc. It consumers low power and when it comes to return on investment, packaging industry can made good and fast profit. Similarly, two layer blown film line materials can also be produced from this single plant

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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.

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Blown Film Plant

 

Blown Film Extrusion Lines with the best combination of technology and performance. These low investment, power efficient, high – speed plants can give processors the competitive edge and quick return on their investment.

Two layer blown film Line has a great demand in global market for its wide range of packaging products that can be produced from it. Two layer blown film machine is an economical solution to create moderate barrier films for shopping bags, crop covers, carry bags used in textile sector, etc. It consumers low power and when it comes to return on investment, packaging industry can made good and fast profit. Similarly, two layer blown film line materials can also be produced from this single plant.
Application of Two Layer Blown Film Line

 

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