Injection Moulding - materials.

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There are many different types of plastic material for injection moulding. These are available in a wide range of grades, some with additives to improve performance, such as lubricants, heat stabilisers and glass reinforcement.

We are happy to help assist in material selection, but here are two websites with technical data and application assistance.


http://www.distrupol.com/

http://www.resinex.net

These are the materials that we mainly use:

Material Trade Names
stocked
Typical
Density
g/cm³
Characteristics Applications
ABS Acrylonitrile Butadiene Styrene Polylac, Magnum 1.06 Rigid, high impact, good chemical resistance, outstanding electrical properties, strong, good aesthetics, opaque, glossy tough, good low temperature properties, good dimensional stability and easily electroplated, low creep. Valves, covers, end caps, bezels, knobs, boxes & lids, Telephone handsets, rigid luggage, domestic appliance housings (food mixers), electroplated parts, and computer housings.
EVA Ethylene Vinyl Acetate Evathane 0.94 Impact resistant, transparent, good low temperature flexibility (-70'C), good chemical resistance, high friction coefficient. Valves, diaphragms, teats, handle grips, flexible tubing, beer tubing, vacuum cleaner hosing.
HDPE High Density Polythene Lupolen 0.96 Flexible, translucent / waxy, weatherproof, good low temperature toughness (to -60'C), easy to process by most methods, low cost, good chemical resistance. Bottle caps, trays, bungs, chemical drums, jerricans, carboys, toys, picnic ware, household and kitchenware, cable insulation, carrier bags, food wrapping material.
LDPE Low Density Polythene Riblene, Atofina 0.92 Strong & flexible, translucent, very tough, weatherproof, good chemical resistance, low water absorption, easily processed by most methods, low cost. Closures, lens caps, caps, squeeze bottles, toys, carrier bags, high frequency insulation, chemical tank linings, heavy-duty sacks, general packaging, gas and water pipes.
PAA Polyarylamide IXEF 1.43-1.77 Excellent surface finish, high rigidity, low creep, excellent resistance to mechanical stress, good in thick or thin section, making it an outstanding replacement for metals and other thermoplastics Camera tripod, brackets, knobs, handles.
PA6 Nylon 6 Polyamide Ravamid, Zytel, Econyl, Minlon 1.14 Excellent rigidity, heat & chemical resistance, good strength, rigidity & flame retardant Nuts and bolts, washers, spacers, bearings, clamp rings, closures, bushes.
PA66 Nylon 66 Polyamide Nylatron, Zytel, Vydyne, Latilube 1.14 Excellent heat & chemical resistance, good strength, rigidity & flame retardant. Contact plates, plugs, buttons, plug in terminal strips, switch components.
PBT Polybutylene Terephthalate Crastin, Valox, Celenex 1.42 Good rigidity. Oven handles, gears, medical.
PC Polycarbonate Duralon, Trirex, Lexan, Calibre 1.2 Polycarbonates are strong, stiff, hard, tough, transparent engineering thermoplastics, excellent transparency, flame retardant, resistant to the weather and excellent impact resistance. Cases, lenses, windows , clips, light pipes, window tubes, illuminated buttons.
PC/ABS Polycarbonate ABS Cycoloy, Lupoy, Pulse, Mayblex, Bayblend 1.2 Good impact resistance, dimensional stability,& heat resistance. Cases, lids, keyboard surrounds, housings.
PEI Polyetherimide Ultem 1.27 Excellent rigidity, flame retardant, heat resistant, & chemical resistance Parts where dimensional stabiltiy at high temperatures are encountered.
PET Polyethylene Terephthalate Rynite 1.34 Excellent chemical & heat resistance with good electrical properties making it an outstanding replacement for metals and other thermoplastics. Clamp bolts, coil housings, sensor housings, probe handles.
PMMA Acrylic Diakon, Oroglas 1.18 Good resistance to UV light, surface hardness & rigidity, excellent transparency. Brittle. Lenses, windows, light guides
POMC Acetal Derlin, Hostaform 1.42 Very tough, resistant to chemicals, dimensions highly stable. Gears, bearings, valves
POMH Acetal/PTFE Tenac 0.91 Superior fatigue resistance, high impact strength, good weather resistance Bushes, gears
PP Polypropylene Exxtral, , Hostacom, Stamylan, Borealis 1.07 Good chemical resistance, translucent and resistant to impact Semi-rigid, tough, good fatigue resistance, integral hinge property and good heat resistance. Brackets, probes, valves, handles, and end caps, flexible and rigid packaging, automotive bumpers, cladding, and exterior trim.
PPO Polyphenylene Oxide Noryl 1.07 Very good physical properties, good heat, humidity resistance, poor chemical resistance, very stable dimensionally, and good electrical insulating properties,difficult to process (blended to ease injection moulding), tough. Connectors, brackets, electrical switch boxes, coffee pot and washing m/c parts (where high temperature and moisture are critical), replacement for die castings, drink vending machines, microwave components
PPS Polyphenylene Sulphide Ryton 1.65 Rigid, flame and heat retardant, opaque non-burning continuous use at 240'C, good chemical resistance, good electrical insulator, moisture resistant, rarely used unfilled. Chemical pumps, pistons lamp bulb holders, sockets, hair dryer grills, medical equipment, TV and automotive components.
PS Polystyrene (General Purpose - GPPS) Nova 1 Brittle, rigid, transparent, low shrinkage, low cost, excellent X-ray resistance, free from odour and taste, easy to process. Toys and novelties, rigid packaging, refrigerator trays and boxes, cosmetic packs and costume jewellery , lighting diffusers, audiocassette and CD cases.
  Polystyrene (High Impact - HIPS) Nova 1 Hard, rigid, translucent, impact strength up to 7 x GPPS, other properties similar. Yoghurt pots, refrigerator linings, vending cups, bathroom cabinets, toilet seats and tanks, closures, instrument control knobs.
PVC Polyvinyl Chloride Doeflex   Compatibility with many different kinds of additives, can be clear or coloured , rigid or flexible. Window frames, drainage pipe, water service pipe, medical devices, blood storage bags, cable and wire insulation, roofing membranes, stationary, automotive interiors and seat coverings, credit cards.
SAN Styrene Acrylonitrile Starex, LGchem 1.07 Rigid, transparent, tough, resistant to grease, stress cracking and crazing, easily processed, resistant to food stains. Windows, lenses, drinking tumblers, hi-fi covers, water jugs and toothbrush handles, kitchen and picnic ware, radio dials, washing machine trims.
TPE Thermoplastic Elastomer/Rubber Evoprene, Santoprene, Hytrel, Thermoflex 1.1 Clear, elastic, wear resistant and impermeable. Excellent flexibility, good impact resistance, flame retardant & chemical resistant. Washers, bushes, medical plugs, soles and heels for sports shoes, hammerheads, seals, gaskets.
TPE-E Thermoplastic Elastomer/Polyester Riteflex 1.15 High mechanical strength, high flexibility and chemical resistance, excellent surface gloss and good printability. Seals, gaskets, grips
TPU Thermoplastic Polyurethane Pellathane 1.2 Excellent flexibility, good transparency, impact resistant & chemical resistant. Medical cannulae and tubes.
TPU Thermoplastic Vulcanisates Sarlink 1.2 Excellent flexibility, high tear strength, oil resistant, good electrical properties. Seals, gaskets, grips grommets, connectors.