Factors You Need To Be Informed On Polyethylene Packaging 101

Resins… Film thickness… Tensile strength… Impact resistance… What can all of these terms mean for you when purchasing your polyethylene bags?
If you aren’t a poly salesman and have a diploma in Plastics Engineering, the terminology used in the probably makes your head spin. To help you, we’ve created Polyethylene Packaging 101.
Resins (Thought as: Any of numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials like polyvinyl, polystyrene, and polyethylene and thermosetting materials such as polyesters, epoxies, and silicones which can be combined with fillers, stabilizers, pigments, and other components to make plastics.)
Some think it’s overwhelming with all the current different resins available today. How do you choose for those who have octene, metalocene, butene, hexene, etc… A knowledgeable sales agent are able to help determine what grade to make use of. Each grade has different characteristics and choices must be determined by applications. Understanding resin properties is crucial in formulating the proper product to your specific application.
Film Thickness (Gauge)

Polyethylene film thickness is measured by thousandths inch, or milli-inch. The thickness of the bag doesn’t always correlate into strength. A heavy gauge bag may not be strong. Generally it is just a blend of resin grade and gauge compared to the approval. A two mil octene linear bag can have more strength than the usual 2 mil butene linear.
Tensile Strength vs. Impact Resistance
Tensile strength may be the maximum stress that a material can withstand while being stretched or pulled before breaking. Why is this important?
You need to have a very plastic bag that’s sufficiently strong on your application. A plastic bag that holds 50 pounds of cloth should have adequate tensile strength, otherwise the bag can be breaking.
Impact resistance is often a material’s ability to resist shock loading. Exactly what does this imply?
Basically it’s the film’s capability to resist being punctured. A punctured bag may result in contaminated goods or product loss.
When scouting for the proper gauge and resin formula you will need to consider how tensile strength and impact resistance are highly relevant to your packaging application. An illustration that everybody can relate to can be a garbage bag. I believe they’ve got had failure in the garbage bag whether or not it breaks when lifting out of the can (tensile strength) or waste punctures holes inside (impact resistance). With all of these variables in selecting the right formula to your polyethylene package, using a knowledgeable salesman is essential.
Is not there is so much to understand making Polyethylene “Film and Bags”!?!
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