Blown vs Cast Stretch Film

Stretch film comes in varying gauges, lengths, chemical make-ups, colors and can be used in numerous applications. Not all stretch film works on all loads and for all applications. One interesting variable and starting point for stretch films is deciding between blown or cast manufacturing processes. But first, if you are unsure of the differences between shrink and stretch start with this blog post. Blown stretch film is created by blowing heated resin out vertically into a bubble. The bubble is then transformed into rolls while it is cooled by…

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