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An overwrap or wrap is applied over an item or is applied over another form of packaging. It is often made of plastic film (sometimes called Polywrapping) or paper.
overwraps of frozen meat
2 Types of overwraps
2.1 Shrink wrap
2.2 Film wrap
2.3 Decorative wrap
2.4 Paper wrap
3 See also
An overwrap can have several purposes or functions:
Combine two or more smaller packages into a larger multi-pack
Keep a package or item clean
Help prevent package pilferage or premature opening of the package
Help provide a tamper indicating seal
Help keep insects out of a package
Obscure a package for distribution, sale, or gifting
Help provide an authentication seal
Help provide grease resistance or water resistance
Keep an item, such as magazines, clean and intact during shipment; provide an address label that does not damage the item
Provide graphics, advertising, warnings, instructions, bar codes, etc.
Types of overwraps
Main article: Shrink wrap
Shrink wrap is a material made up of polymer plastic film. When heat is applied it shrinks tightly over whatever it is covering. Heat can be applied with a hand held heat gun (electric or gas) or the product and film can pass through a heat tunnel. Most shrink films are polyethylene.
Plastic films, usually polyethylene or polypropylene, can be wrapped around an item and attached with adhesive, PSA tape, or heat seals. Sometimes the film is in the form of a plastic bag which is sealed around the item.
Main article: giftwrap
Kraft paper and a variety of other papers can be used to overwrap items in a package or to overwrap a package. Some papers provide abrasion protection for packaged items. Sealing can be by adhesive, tapes, heat seals, etc. Some papers also have grease resistance or are saturated with volatile corrosion inhibitors, etc.