This symbol indicates which material the plastic packaging is made. The number(5) can be replaced by the numbers 1 to 7, and often the abbreviation(pp) of the type of material is listed.
|1||PET - Polyethylene Terephthalate||PET bottles, plastic beer glasses, blisters||Very strong, untearable|
|2||PE-HD - Polyethylene high density||Bottles, crates||Good chemical barrier|
|3||PVC - Polyvinylchlorid||Films, medicine packaging||Not invironmentally friendly, rarely used|
|4||PE-LD - Polyethylene low density||Films, bags||Good resistance to tearing|
|5||PP - Polypropylene||Containers, jars, pails, caps||Cheap, strong resistance to high tempratures and many chemicals|
|6||PS - Polystyrene||Disposable tableware, foam materials||Cheap and easy to edit.|
This symbol indicates the packaging is suitable for food.