Resins... Film thickness... Tensile strength... Impact resistance... What can all of these terms mean for you when choosing your polyethylene bags?
If you aren't a poly salesman or have a college degree in Plastics Engineering, the terminology used in a probably makes your face spin. To help you out, we've created Polyethylene Packaging 101.
Resins (Looked as: Some of numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials such as polyvinyl, polystyrene, and polyethylene and thermosetting materials such as polyesters, epoxies, and silicones which are used in combination with fillers, stabilizers, pigments, along with other components to create plastics.)
You may find it overwhelming with all the different resins available nowadays. Would you choose for those who have octene, metalocene, butene, hexene, etc... An experienced sales representative can help figure out what grade to use. Each grade has different characteristics and choices must be based on applications. Understanding resin properties is important in formulating the best product for your specific application.
Film Thickness (Gauge)
Polyethylene film thickness is measured by thousandths of an inch, or milli-inch. The thickness with the bag does not always correlate into strength. A whopping gauge bag may not be strong. Usually it's a combination of resin grade and gauge in accordance with the application. A two mil octene linear bag could have more strength than a 2 mil butene linear.
Tensile Strength vs. Impact Resistance
Tensile strength is the maximum stress which a material can withstand while being stretched or pulled before breaking. Why so much interest?
It's important to have a plastic bag that is sufficiently strong to your application. A plastic bag that holds 50 pounds of fabric will need to have adequate tensile strength, otherwise the bag find yourself breaking.
Impact resistance is often a material's capability to resist shock loading. Simply what does this imply?
Basically oahu is the film's capability to resist being punctured. A punctured bag could lead to contaminated goods or product loss.
When choosing the best gauge and resin formula you should consider how tensile strength and impact resistance are relevant to your packaging application. An illustration that everybody can relate with is often a garbage bag. I'm certain they've got had failure in the garbage bag whether it breaks when lifting out from the can (tensile strength) or waste material punctures holes within it (impact resistance). Wonderful these variables when choosing the proper formula to your polyethylene package, using a knowledgeable salesman is important.
Isn't there was so much to know about making Polyethylene "Film and Bags"!?!
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