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Resins… Film thickness… Tensile strength… Impact resistance… What can these terms mean to you when choosing your polyethylene bags?

If you aren’t a poly salesman and have a qualification in Plastics Engineering, the terminology utilized in the market probably makes your head spin. To assist you, we’ve created Polyethylene Packaging 101.

Resins (Looked as: Any one numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials including polyvinyl, polystyrene, and polyethylene and thermosetting materials like polyesters, epoxies, and silicones that are combined with fillers, stabilizers, pigments, as well as other components to create plastics.)

Some find it overwhelming with all the current different resins available nowadays. You can view choose if you have octene, metalocene, butene, hexene, etc… An experienced sales agent should be able to help know what grade to work with. Each grade has different characteristics and choices ought to be depending on applications. Understanding resin properties is crucial in formulating the correct product for the specific application.

Film Thickness (Gauge)

Polyethylene film thickness is measured by thousandths inch, or milli-inch. The thickness in the bag doesn’t necessarily correlate into strength. Much gauge bag isn’t necessarily strong. Frequently this is a mix of resin grade and gauge compared to the applying. A two mil octene linear bag could have more strength than the usual 2 mil butene linear.

Tensile Strength vs. Impact Resistance

Tensile strength could be the maximum stress a material can withstand while being stretched or pulled before breaking. Why so much interest?

You need to have a plastic bag that’s sufficiently strong enough enough for the application. A plastic bag that holds 50 pounds of fabric should have adequate tensile strength, otherwise the bag can be breaking.

Impact resistance is a material’s ability to resist shock loading. What does this suggest?

Basically it does not take film’s ability to resist being punctured. A punctured bag may lead to contaminated goods or product loss.

When scouting for the right gauge and resin formula you should consider how tensile strength and impact resistance are highly relevant to your packaging application. A good example that everyone can correspond with can be a garbage bag. I know most have had failure in the garbage bag whether or not this breaks when lifting out from the can (tensile strength) or waste materials punctures holes inside it (impact resistance). With all these variables in picking the right formula to your polyethylene package, having a knowledgeable salesman is critical.

Well isn’t there were much to know about making Polyethylene "Film and Bags"!?!

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