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Cast or blown stretch film — the four differences that matter
Same polymer, two processes, and a price gap that is worth paying on some loads and wasted on most of them.
Resources
Insights
Technical comparisons, regulatory notes and the arithmetic behind packaging prices. Written when there is something worth saying, not on a schedule.
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How polyethylene pricing works, and what a buyer can do about it
Why film and sack prices move without your supplier changing anything, and the three parts of the bill that are actually within your control.
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LDPE or HDPE — the question a micron figure cannot answer
A supplier quoting 20 µm against your 40 µm may be offering a like-for-like replacement, or half the sack. Here is how to tell which.