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Other types of polyethylene and PVC can also be used. Many films have about 500% stretch at break but are only stretched to about 100–300% in use. Once stretched, the elastic recovery is used to keep the load tight. There are two methods of producing stretch wrap: Blown: the resin is melted and extruded through an annular die, it is air ...
A reusable package or container is "designed for reuse without impairment of its protective function." [ 1 ] The term returnable is sometimes used interchangeably but it can also include returning packages or components for other than reuse: recycling , disposal, incineration, etc. Typically, the materials used to make returnable packaging ...
The process of engineering more environmentally acceptable packages can include consideration of the costs. [36] Some companies claim that their environmental packaging program is cost effective. [37] Some alternative materials that are recycled/recyclable and/or less damaging to the environment can lead to companies incurring increased costs.
Extended core stretch wrappers are rolls of stretch film that have their internal core extended beyond their film roll creating a handle by which film can be wrapped. [1] [2] Extended core wrapping is the lowest initial investment stretch wrapping system as no machinery is purchased. This system provides little control over stretch and is hard ...
Typical products are foam food containers, plates, bowls, cups, utensils, doilies and tray papers. These products can be made from a number of materials including plastics, paper, bioresins, wood and bamboo. Packaging of fast food and take-out food involves a significant amount of material that ends up in landfill, recycling, composting or ...
Screw caps or other container closures with similar functions; Hook and loop fasteners; Pressure sensitive adhesive strips and tapes; Interlocking plastic strips such as found on Zipper storage bags; Zip packs: resealable packaging with a zip feature that keeps the container airtight.