Environmental Engineering Reference
In-Depth Information
Table 4.2
Commonly Used Processing Techniques for
thermoplastics
Source: From
http://www.bpf.co.uk/plastipedia/processes/
Processing
technique
Plastic
resin
Typical products
Base
technology
Film blowing
(extrusion
blowing)
HDPE, LDPE,
and LLDPE
Shrink film, stretch film,
bag film or container liners,
greenhouse film, garment
bags, and garbage can liners
Melt
extrusion
and air
blowing
Blow molding HDPE,
LLDPE, PP,
PET, PVC
Bottles and containers, fuel
tanks, air ducts, garden
supplies
Melt
extrusion/
molding
Profile
extrusion
HDPE (rigid)
PVC
Plastic pipes, window
frames, drainage tubing,
wastewater pipes,
agricultural tubing,
conduit/cable protector,
guttering, plastic siding,
fascia and soffit, garden
fence posts and decking
Melt
extrusion
Injection blow
molding
LDPE, HDPE,
LLDPE, PP,
PET, PVC
Plastic bottles and
containers
Melt
injection/
blowing
Melt
injection
Injection
molding
ABS, nylon
(PA), PP, and
PS
Polycarbonate
(PC)
Power-tool housing,
telephone handsets, TV
cabinets, computer housing,
DVDs, automotive
bumpers, dashboards,
syringes, kitchenware,
cutlery, crates, bottle lids/
closures
Variations
include
gas-assisted
injection
molding and
stretch
injection
molding
