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"Plastic films are being used to great effect as they offer a wide range of extra benefits over paper. Some of the reasons are outlined below.
Plastic films are more durable and versatile than paper in moist conditions such as bathrooms and kitchens.Plastic films offer improved product resistance where there is likely to be product spillage down the sides of the container and/or the product is likely to be handled in dirty or damp conditions such as garages and gardens.
Plastic films can be manufactured either as a single film or as a combination of more than one plastic. There are two ways of combining plastics: lamination and coextrusion. Plastic film with a metal appearance is very common in food bags such as used to protect candy and potato chips etc.
Plastic film is commonly used as a liner material for paper bags and sacks for packaging many dry products. Such liners, usually electrically insulating, have been reported to create some new electrostatic hazards where none existed before. "