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Sometimes you'll hear people refer to the plastic that they wrap around pallets as shrink film. You know what they mean of course, but the proper name is Stretch Film for a reason.
Modern stretch film formulations are made to stretch - but maybe not for the reason, or to the extent that you imagine.
When Pat Lancaster invented the first stretch wrapper in 1972 he used a 60” roll of plastic film designed for use in dry cleaning facilities. The idea was to lay the film against the rotating pallet and rely on a core brake to slow the film enough that it stretch a bit and compressed the load as a result. That invention rapidly evolved to the spiral wrap so popular today. The polyethylene stretch film we rely on now rapidly followed.
That's essentially the same process repeated thousands of times each day as workers hand wrap loads with 12 & 18" wide rolls of hand stretch film.
And most importantly, load security is determined by containment force - or wrap force X film layers. It turns out that stretching isn't a factor.September 26, 2024
June 14, 2019
July 26, 2022
March 19, 2020
If you have products that require protection such as supplements and pharmaceuticals, tamper-evident packaging is a must-have for your business. From induction seals to shrink bands, there are many...
Stretch film or stretch wrap is highly stretchable film typically made from linear, low-density polyethylene plastic. As a packaging material, it’s often confused with shrink wrap; however, the two...
Stretch film, shrink film, etc. have a protective effect on the product, while protecting the product, but also enhance the quality of the goods, because the stretch film around the product to form a...
1. Material Make-Up Shrink films contain a high percentage of low density polyethylene (LDPE), which is the same type of resin used to make bread bags and newspaper overwrap sleeves. When fabricated...
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September 26, 2024
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March 19, 2020
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.