Plastic material guides for injection molded parts.
Use material pages to connect resin choice with molding risk, appearance, tolerance, strength and cost.
Compare practical resin options.
These pages are built for RFQ preparation and buyer education.
Tie each resin to the molded-part behavior it controls.
Material pages should help buyers compare real tradeoffs: strength, appearance, shrinkage, heat, flexibility and quote risk.
ABS Injection Molding
Balanced, paintable and practical for housings, covers and consumer product parts.
Polypropylene PP Injection Molding
Lightweight and chemical resistant for caps, closures, living hinges and packaging components.
Polycarbonate PC Injection Molding
Impact-resistant and transparent options for covers, lenses and durable housings.
Nylon PA66 Injection Molding
Wear-resistant engineering plastic for brackets, gears, clips and mechanical parts.
POM Acetal Injection Molding
Low-friction plastic for gears, sliding components, latches and precision mechanisms.
TPU / TPE Injection Molding
Soft-touch material for grips, seals, bumpers and overmolded user-contact areas.
PMMA Acrylic Injection Molding
Clear, glossy and light-transmitting material for covers, windows and display parts.
Material choice should be tied to function and molding risk.
A resin name is not enough for a quote. The same ABS, PP or PC request can change when the part has cosmetic surfaces, snap fits, tight tolerance, heat exposure or compliance requirements.
| Question | Why it changes the molding route |
|---|---|
| Is the surface cosmetic? | Gate vestige, flow marks, texture, polish and paint requirements can change gate location and mold finish. |
| Does the part carry load? | Creep, stiffness, rib design and material reinforcement need review before mold steel. |
| Does the material need drying or traceability? | PC, PA66 and other engineering plastics may require drying control, certificates or batch records. |
| Is the part flexible or soft-touch? | TPU/TPE requests require hardness, flash, deformation and bonding assumptions. |
Avoid choosing resin by name alone.
Many molding problems start when the quote uses a familiar resin name but omits the part function. Material selection should connect the resin to heat, impact, chemical exposure, friction, transparency, outdoor use, compliance and the appearance standard the buyer will use to approve T1 samples.
| Mistake | Better RFQ detail |
|---|---|
| Only writing ABS or PP | Add grade preference, finish, color, wall thickness and whether the part is cosmetic or functional. |
| Ignoring drying and shrinkage | Ask how material behavior changes gate location, tolerance and inspection. |
| Treating clear parts like opaque parts | State clarity, polish, gate vestige and inspection lighting requirements. |