Plastic Identification Codes

Plastic Identification Code Type of Plastic Polymer Properties Potential Packaging Applications
Polyethylene Terephthalate (PET, PETE) Clarity, strength, toughness, barrier to gas and moisture Soft drink, water and salad dressing bottles; peanut butter and jam jars
High Density Polyethylene (HDPE) Stiffness, strength, toughness, resistance to moisture, permeability to gas Milk, juice and water bottles; trash and retail bags
Polyvinyl Chloride (V) Versatitlity, clarity, ease of blending, strength, toughness Juice bottles; cling films; PVC piping
Low Density Polyethylene (LDPE) Ease of processing, strength, toughness, flexility, ease of sealing, barrier to moisure Frozen food bags; squeezable bottles, e.g. honey, mustard; cling films; flexible container lids
Polypropylene (PP) Strength, toughness, resistance to heat, chemicals, grease and oil, versatile, barrier to moisture Reusable microwaveable ware; kitchenware; yogurt containers; margarine tubs; microwaveable disposable take-away containers; disposable cups and plates
Polystyrene (PS and EPS) Versatility, clarity, easily formed Egg cartons; packing peanuts; “Styrofoam”; disposable cups, plates, trays, and cutlery; disposable take-away containers
Other (often polycarbonate, ABS or PLA) Dependent on polymers or combination of polymers Beverage bottles; baby milk bottles; electronic casing

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