A medical device designer might look up a polymer's physical properties and game out how a part made of the polymer will withstand stress. But start molding the part, and it might not hold up anyway.

Weld lines, also called knit lines, are a common problem encountered by injection molders. Beyond aesthetic issues, weld lines can also lead to functional failure. During a press conference at K 2022 ...

CHICAGO (Aug. 21, 5:55 p.m. EDT) — Chem-Pak Inc. showcased its patented product that resolves knit and flow lines created during the injection molding of matte finished parts. Knit and flow lines are ...

Fiber-filled nylons are mechanically stronger than the unfilled resin, except at knit and weld lines. Nylon thermoplastics serve in a variety of demanding applications from automotive air-intake ...

We’ve made hundreds of thousands of molds over the years! With that much experience, it goes with the territory that we’ve seen designs in which injection molding expertise is evident, and other ...

3D printing is all well and good for prototyping, and it can even produce useful parts. If you want real strenght in plastics, though, or to produce a LOT of parts, you probably want to step up to ...

Known for producing hollow parts, gas-assist techniques can overcome many of the limitations of conventional injection molding. The first patents for gasassist injection molding came in the early ...

Friedrichshafen, Germany — Following four years of work together with the Pforzheim University of Applied Sciences, Ötisheim, Germany-based molder Varioplast Konrad Däbritz GmbH has developed a new ...