Details You Require To Know About Polyethylene Packaging 101Resins... Film thickness... Tensile strength... Impact resistance... What do all of these terms mean for you when choosing your polyethylene bags?
If you aren't a poly salesman or have a degree in Plastics Engineering, the terminology used in the probably makes your mind spin. To assist you, we've created Polyethylene Packaging 101.
Resins (Defined as: Any of numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials like polyvinyl, polystyrene, and polyethylene and thermosetting materials like polyesters, epoxies, and silicones which are used with fillers, stabilizers, pigments, and also other components to create plastics.)
It may seem overwhelming with all the current different resins available these days. You can view choose when you've got octene, metalocene, butene, hexene, etc... A knowledgeable sales rep should be able to help know what grade to make use of. Each grade has different characteristics and choices should be based on applications. Understanding resin properties is crucial in formulating the right product for your specific application.
Film Thickness (Gauge)
Polyethylene film thickness is measured by thousandths of an inch, or milli-inch. The thickness of the bag does not always correlate into strength. Much gauge bag may not be strong. Frequently it is a mix of resin grade and gauge in accordance with the application. A couple of mil octene linear bag will have more strength when compared to a 2 mil butene linear.
Tensile Strength vs. Impact Resistance
Tensile strength is the maximum stress a material can withstand while being stretched or pulled before breaking. Why is this important?
It is critical to have a very plastic bag that is sufficiently strong enough on your application. A plastic bag that holds 50 pounds of material will need to have adequate tensile strength, otherwise the bag will end up breaking.
Impact resistance is a material's capacity to resist shock loading. Exactly what does this imply?
Basically it's the film's capacity to resist being punctured. A punctured bag could lead to contaminated goods or product loss.
When choosing the best gauge and resin formula it is very important consider how tensile strength and impact resistance are tightly related to your packaging application. An example that can correspond with can be a garbage bag. I know they have had failure in the garbage bag whether or not this breaks when lifting out from the can (tensile strength) or waste material punctures holes inside it (impact resistance). With all these variables when choosing the best formula to your polyethylene package, using a knowledgeable salesman is essential.
Who knew there was clearly so much to understand making Polyethylene "Film and Bags"!?!
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