Unformatted text preview: together. In contrast, if you tried to do that with water, you would just get a puddle. Similarly, we can easily make blown film from HDPE, but if we tried to do it with PET, we would get a mess all over our processing equipment, and no film! PET has very low melt strength. We simply cannot produce a hollow tube of PET and expand it. If we want to make PET film or sheet, we have to use the cast film process. Blown Film Production...
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- Spring '08
- blown film, melt strength, good melt strength, low melt strength, cast film/sheet process