Verbal shorthand when thrown around casually can lead to misunderstandings especially to an industry insider who takes these terms literally. Herewith is a short explanation of some common acronyms for plastic films in plain English starting with the basic chemical building block. The only thing common to all three is ethylene, C2H4 or ” C2″ …
Everybody wants replacements for politically incorrect plastic films to be exactly like the original. No property trade-offs. No exaggeration. Would these same people expect the same results from direct substitution of stevia, xylitol or saccharin ? There are many drivers. Back in the 1990’s when PVC started to fall out of favor, we got calls …
EVA and PEVA are both acronyms for Ethylene Vinyl Acetate. Somehow the P for polyethylene was added to create the acronym “PEVA.” To make EVA copolymer, Vinyl Acetate Monomer or “VAM” is copolymerized, or conjoined with Ethylene monomer to make Ethylene Vinyl Acetate. EVA copolymer is made in varying percentages from 2% EVA, 4% EVA, 6% …
In it’s day, ethylene vinyl acetate ( EVA / PEVA ) was a game changer. It enhances physical properties and sealability. When added to homopolymer polyethylene in small amounts (1 to 3%) it improves the clarity. When added in higher percentages (4 to 6%) it further enhances sealabilty and improves cold stress crack resistance. At the 4 to …
PEVA materials are not the only PVC substitute film. PEVA film is a popular substitute where PVC has been banned mainly because it is what is known as a “polar” molecule. The properties of polyethylene film copolymer EVA also known as PEVA material most closely mimic the polar nature of PVC. This makes “PEVA” the path of least resistance when …
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