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The Plastic Identification Codes (Plastic Engineering)

Posted by | November 22, 2013 | Uncategorized

 

THE PLASTIC IDENTIFICATION CODE
Symbol Type of

Plastic

Properties Common Uses Recycled into:

1

 

PET

 

PET Polyethylene Terephthalate

 

Clear, tough, solvent resistant, barrier to gas and moisture, softens at 80˚

Soft drink and water bottles, salad domes, biscuit trays, salad dressing and containers

Pillow and

sleeping bag filling, clothing, soft drink bottles,

carpeting, building insulation

 

 

2

 

HDPE

 

 

HDPE High Density Polyethylene

 

Hard to semi-flexible, resistant to chemicals and moisture, waxy surface, opaque, softens at 75˚C, easily coloured, processed and formed

Shopping bags,

freezer bags, milk bottles, ice cream containers, juice bottles, shampoo, chemical and detergent bottles, buckets, rigid agricultural pipe, crates

Recycling bins, compost bins, buckets, detergent

containers, posts, fencing, pipes, plastic timber

 

 

 

3

 

PVC

PVC

Unplasticised Polyvinyl Chloride PVC-U

 

 

 

Plasticised Polyvinyl

Chloride

PVC-P

Strong, tough, can be clear,

can be solvent welded, softens at 80˚C

 

 

 

 

 

Flexible, clear, elastic, can be solvent welded

Cosmetic containers,

electrical conduit, plumbing pipes and fittings, blister packs, wall cladding, roof sheeting, bottles

 

Garden hose, shoe soles, cable

sheathing, blood bags and tubing

Flooring, film and sheets, cables, speed bumps, packaging,

binders, mud flaps and mats, new

gumboots and shoes

 

4

 

LDPE

 

LDPE Low density Polyethylene

 

Soft, flexible, waxy surface, translucent, softens at 70˚C, scratches easily

Cling wrap, garbage bags, squeeze bottles, irrigation tubing, mulch film, refuse bags

 

 

Bin liners, pallet sheets

 

5

 

PP

 

 

PP

Polypropylene

 

 

Hard but still flexible, waxy surface, softens at 140˚C, translucent, withstands solvents, versatile

Bottles and ice cream tubs, potato chip bags, straws, microwave dishes, kettles, garden

furniture, lunch boxes, packaging tape

 

Pegs, bins, pipes, pallet sheets, oil funnels, car battery cases, trays

 

 

PS

 

6

 

PS-E

 

 

PS

Polystyrene

 

 

PS-E Expanded polystyrene

Clear, glassy, rigid, opaque,

semi-tough, softens at 95˚C. Affected by fat, acids and solvents, but resistant to alkalis, salt solutions.  Low water absorption, when not pigmented is clear, is odour and taste free.

 

Special types of PS are available for special applications.

CD cases, plastic cutlery, imitation glassware, low cost brittle toys, video cases\

Foamed polystyrene cups, takeaway clamshells, foamed meat trays, protective packaging and building and food insulation

 

Coat hangers, coasters, white ware components, stationery trays and accessories, picture frames, seed trays,

building products

7

 

OTHER PACKAGING

OTHER PACKAGING In packaging, it

could be multi-layer materials e.g.

PE+PP.

Includes all resins and multi- materials (e.g. laminates). Properties dependent on plastic or combination of plastics.

Automotive and appliance components, computers, electronics, cooler bottles, packaging

Plastic timber, sleepers – looks like wood, used for beach walkways, benches etc.

 

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