Facts You Have To Be Aware Of Polyethylene Packaging 101
Resins... Film thickness... Tensile strength... Impact resistance... Exactly what do many of these terms mean to you when choosing your polyethylene bags?
Unless you are a poly salesman or have a degree in Plastics Engineering, the terminology used in the market probably makes your mind spin. To assist you, we've created Polyethylene Packaging 101.
Resins (Looked 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 that are in combination with fillers, stabilizers, pigments, and also other components in order to create plastics.)
Some find it overwhelming with the different resins available nowadays. Would you choose when you've got octene, metalocene, butene, hexene, etc... An experienced sales representative should be able to help know what grade to work with. Each grade has different characteristics and choices ought to be according to applications. Understanding resin properties is important in formulating the correct product for your specific application.
Film Thickness (Gauge)
Polyethylene film thickness is measured by thousandths of an inch, or milli-inch. The thickness from the bag doesn't always correlate into strength. A whopping gauge bag is not always strong. Generally it's a mix of resin grade and gauge when compared with the approval. A couple mil octene linear bag may have more strength than a 2 mil butene linear.
Tensile Strength vs. Impact Resistance
Tensile strength could be the maximum stress that the material can withstand while being stretched or pulled before breaking. Why is this important?
You need to have a plastic bag that is strong enough for your application. A plastic bag that holds 50 pounds of cloth will need to have adequate tensile strength, otherwise the bag can become breaking.
Impact resistance is a material's power to resist shock loading. Exactly what does this mean?
Basically it's the film's capability to resist being punctured. A punctured bag may lead to contaminated goods or product loss.
When choosing the correct gauge and resin formula you will need to consider how tensile strength and impact resistance are highly relevant to your packaging application. One example that can relate to is often a garbage bag. I'm sure most have had failure in the garbage bag whether or not it breaks when lifting out from the can (tensile strength) or waste materials punctures holes within it (impact resistance). Effortlessly these variables in selecting the proper formula for your polyethylene package, having a knowledgeable salesman is essential.
Isn't there was much to understand about making Polyethylene "Film and Bags"!?!
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