Dongguan Yalan Packing Materials Co., Ltd.

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What is Stretch Film?

May 17, 2019

Stretch films are made from linear low-density polyethylene resins. Since its early introduction in the early 70’s, stretch film has become the most important method of unitizing product loads for transport. There are a number of key features for this including:

  • The uniform and relatively high holding force that stretch film applies to a load
  • The protection from dust and damage it provides versus other unitizing methods.
  • The optics that allow for customers and shippers the ability to identify the product while also keeping it clean.
  • It is the most economical method of unitizing
  • More details of these and other unitizing features.

Stretch Film Manufacturing Methods

There are two basic manufacturing methods to create stretch film. Without needing to get into technical detail they are: 

Blown Film
Blown film is created by forcing molten resin through a circular die, creating a tube, which is “blown some 30 feet high”. The bubble is then flattened and cut into strips that when rolled will produce rolls of flat film. Blown film is generally “labeled” as a tough, hazy, and noisy stretch film best suited for “industrial” type applications.


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Ms. Justina

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sales@yalanpack.com

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