Resins... Film thickness... Tensile strength... Impact resistance... What do these terms mean to you when purchasing your polyethylene bags?
If you aren't a poly salesman or have a college degree in Plastics Engineering, the terminology found in the market probably makes your brain spin. To work with you, we've created Polyethylene Packaging 101.
Resins (Thought as: Any one of numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials including polyvinyl, polystyrene, and polyethylene and thermosetting materials for example polyesters, epoxies, and silicones which can be combined with fillers, stabilizers, pigments, along with other components to create plastics.)
Some think it's overwhelming with the different resins available nowadays. Would you choose when you have octene, metalocene, butene, hexene, etc... An educated sales representative are able to help figure out what grade to use. Each grade has different characteristics and choices should be depending on applications. Understanding resin properties is very important in formulating the proper product on your specific application.
Film Thickness (Gauge)
Polyethylene film thickness is measured by thousandths inch, or milli-inch. The thickness in the bag does not always correlate into strength. A heavy gauge bag may not be strong. Usually it is a combination of resin grade and gauge in accordance with the application. A couple mil octene linear bag may have more strength compared to a 2 mil butene linear.
Tensile Strength vs. Impact Resistance
Tensile strength is the maximum stress that a material can withstand while being stretched or pulled before breaking. Why so much interest?
It is advisable to use a plastic bag that is certainly sufficiently strong enough to your application. A plastic bag that holds 50 pounds of cloth must have adequate tensile strength, otherwise the bag can become breaking.
Impact resistance is often a material's power to resist shock loading. Simply what does this imply?
Basically it's the film's ability to resist being punctured. A punctured bag could lead to contaminated goods or product loss.
When choosing the proper gauge and resin formula it is important to consider how tensile strength and impact resistance are relevant to your packaging application. An example that can correspond with is really a garbage bag. I believe they have got had failure inside a garbage bag whether or not it breaks when lifting out of the can (tensile strength) or waste elements punctures holes inside (impact resistance). Wonderful these variables in picking the correct formula for the polyethylene package, using a knowledgeable salesman is essential.
Is not there were much to know about making Polyethylene "Film and Bags"!?!
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