Matters You Need To Find Out About Polyethylene Packaging 101
Resins... Film thickness... Tensile strength... Impact resistance... So what can many of these terms mean for your requirements when selecting your polyethylene bags?
If you're not a poly salesman and have a diploma in Plastics Engineering, the terminology employed in a probably makes your head spin. To help you, we've created Polyethylene Packaging 101.
Resins (Thought as: Any of numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials like polyvinyl, polystyrene, and polyethylene and thermosetting materials for example polyesters, epoxies, and silicones which can be in combination with fillers, stabilizers, pigments, and also other components in order to create plastics.)
You may find it overwhelming because of the different resins available today. Would you choose if you have octene, metalocene, butene, hexene, etc... An experienced sales representative are able to help determine what grade to utilize. Each grade has different characteristics and choices ought to be depending on applications. Understanding resin properties is very important in formulating the best product to your specific application.
Film Thickness (Gauge)
Polyethylene film thickness is measured by thousandths of an inch, or milli-inch. The thickness in the bag doesn't necessarily correlate into strength. A heavy gauge bag may not be strong. Most often it's a mixture of resin grade and gauge relative to the application form. A couple of mil octene linear bag will have more strength than a 2 mil butene linear.
Tensile Strength vs. Impact Resistance
Tensile strength may be the maximum stress that the material can withstand while being stretched or pulled before breaking. Why so much interest?
It is advisable to have a very plastic bag that is sufficiently strong enough for the application. A plastic bag that holds 50 pounds of cloth should have adequate tensile strength, otherwise the bag will end up breaking.
Impact resistance is often a material's capacity to resist shock loading. Exactly what does this suggest?
Basically it's the film's capability to resist being punctured. A punctured bag may lead to contaminated goods or product loss.
When selecting the proper gauge and resin formula it is very important consider how tensile strength and impact resistance are relevant to your packaging application. An illustration that everybody can correspond with is a garbage bag. I'm sure they have got had failure in a garbage bag if it breaks when lifting out of your can (tensile strength) or waste punctures holes inside (impact resistance). Wonderful these variables in picking the correct formula on your polyethylene package, developing a knowledgeable salesman is vital.
Is not there was much to understand about making Polyethylene "Film and Bags"!?!
For additional information about polyethylene production you can check this useful resource.