Polyethylene Plastic PE Films Glossary

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All | A B C D E F G H I J L M O P S T U V Y
There are currently 5 glossary in this directory beginning with the letter C.
CAMBER
As it applies to blown polyethylene film, camber is the tendency of any straight line to eventually curve. Also known as "dishing", any film which does not unroll perfectly straight will cause machinability issues in printing presses, bag machines, shrink tunnels and vertical form fill & seal VFFS machines.
CENTERFOLD
Film which is folded on one side and open on the other. Centerfold A Centerfold B
CLEAR CLARITY
see HAZE
COF (COEFFICIENT OF FRICTION) / ASTM D 1984
While COF is usually measured film-to-film which makes sense for applications such as beverage shrink wrap, the interface is usually between film and stainless steel in VFFS vertical form / fill / seal, HFFS horizontal form / fill / seal and bakery bread applications. Stainless steel has a high surface energy of around 75 dynes, so it is reasonable to expect different results vis-à-vis film-to-film.
What is high slip, medium slip and low slip? The Flexible Packaging Association defines the ranges of slip (high, mediuim and low) and the kinetic coefficient of friction, when tested, film-to-film, in accordance with ASTM D 1984, as follows:
Surface C.O.F.
Low Slip Greater than 0.5
Medium Slip 0.2 to 0.5
High Slip Less than 0.2
COMONOMER
A monomer which is combined with a different monomer to make a polymer. A common example is EVA (ethylene vinyl acetate) / PEVA.
More Resources
PE Films Weights and Measures
Converting weight to area is easy.
Polyethylene Plastic
PE Films Glossary
We have compiled a list of PE film terms and definitions.
Certifications and
Regulatory Compliance
Brentwood Plastics film and materials meet several certifications.
PE Film
Data Sheets
Chances are we have a time-tested PE Film for tyour application.

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PEVA film is not the only PVC substitute

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”

PEVA film is not the only PVC substitute

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”

PEVA, PVC, PE and METALLOCENE SIMPLIFIED

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

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