Flame Retardant Polycarbonate: Transparency and UL94 V-0
Flame retardant polycarbonate hits UL94 V-0 and stays clear when the retardant sits inside the polymer instead of being mixed into it. Sulfonate[…]
Plastic coloring additives: the nine families explained
Most color problems in plastics are not pigment problems but additive problems. Plastic coloring additives are put into a compound to solve dispersion,[…]
Plastic part design parameters: shrinkage and draft charts
Plastic part design parameters decide whether a drawing survives its first contact with tooling. Shrinkage tells you how large to cut the cavity.[…]
Automotive Plastic Structural Parts: Tests Are Not Enough
Material tests are not enough for automotive plastic structural parts. A compound can pass every laboratory check and still fail on the car.[…]
Southeast Asia masterbatch market: capacity and 2026 risk
The Southeast Asia masterbatch market ran at about 71 percent of capacity in 2025, on 1.86 million tonnes of compounding capacity and roughly[…]
Injection Molding Weld Lines: Causes, Fixes, Strength Loss
A weld line is the thin mark left where two melt fronts meet inside a molded part and cool without fusing. Injection molding[…]
Plastic brake pedal bracket: how nylon replaced steel
A plastic brake pedal bracket is a glass fiber reinforced nylon housing that carries the full pedal load in modern cars. The best[…]
Polypropylene shrinkage: 5 routes to tighter tolerances
Polypropylene shrinkage runs about 1.5 to 2.5 percent for unfilled homopolymer, and five routes cut it: mineral fillers, glass fiber, nucleating agents, elastomer[…]
Beta nucleating agent for polypropylene: which one wins
A beta nucleating agent for polypropylene pushes the polymer toward the beta crystal and away from the alpha form it normally prefers. Three[…]
Polymer melt viscosity and melt flow rate: what MFR misses
Two polypropylene grades sit on the same shelf, both stamped 12 g/10 min. The first one fills a 0.8 mm wall and nobody[…]