Kumar Helms posted an update 5 months, 2 weeks ago
Resins… Film thickness… Tensile strength… Impact resistance… What do all of these terms mean for your requirements when choosing your polyethylene bags?
Unless you are a poly salesman or have a qualification in Plastics Engineering, the terminology utilized in the market probably makes your mind spin. To help you, we’ve created Polyethylene Packaging 101.
Resins (Looked as: Any one numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials for example polyvinyl, polystyrene, and polyethylene and thermosetting materials like polyesters, epoxies, and silicones which are combined with fillers, stabilizers, pigments, and also other components to form plastics.)
Some think it’s overwhelming with the different resins available these days. How does one choose when you’ve got octene, metalocene, butene, hexene, etc… An experienced sales representative are able to help evaluate which grade to work with. Each grade has different characteristics and choices should be depending on applications. Understanding resin properties is crucial in formulating the proper product on 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. A heavy gauge bag may not be strong. Usually this is a combination of resin grade and gauge relative to the application. A 2 mil octene linear bag can have more strength 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 possess a plastic bag that’s sufficiently strong enough 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 often a material’s capability to resist shock loading. What does this mean?
Basically it does not take film’s capacity to resist being punctured. A punctured bag may lead to contaminated goods or product loss.
When selecting the correct gauge and resin formula it is very important consider how tensile strength and impact resistance are strongly related your packaging application. One example which everybody can connect with is often a garbage bag. I’m sure they’ve got had failure within a garbage bag whether it breaks when lifting out from the can (tensile strength) or waste materials punctures holes inside it (impact resistance). With all these variables in selecting the best formula for the polyethylene package, developing a knowledgeable salesman is important.
Is not there were a lot to understand making Polyethylene "Film and Bags"!?!
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