Articles

Let’s reflect on the good and bad with injection molding machines. 1966. Molding machines were loud, slow, leaked oil, and not very precise. All were hydraulic. By then the vertical barrel, horizontal barrel with plunger designs had largely faded away. All had plasticizing screws. Robotic interfaces were home built. Names like IMPCO, Van Dorn, Lester, […]

A bold statement but heard time after time when someone tries to provide a simple description of PEEK. Polyetherether ketone began its rise in the early 1980’s as an alternative to Torlon (Polyamide imide) and Polyimides. Where PEEK couldn’t compete with its competitors is in the very highest temperature applications, PEEKs relative ease of molding, […]

Yes, it can be done; no you might not like the results. PTFE (like UHMW) has never been actively considered injection moldable as a base resin.50% PTFE in PPS as a blend can be molded, just as 50% UHMW in HDPE is moldable. The issue with unmodified PTFE, unlike UHMW, is that PTFE “grows” by […]

The recent popularity of green thinking can be embraced by a wide range of steps that fit with minimizing costs in the molding environment. For instance, saving energy reduces electrical costs. It does go far beyond that, and here at Recto Molded Products we have experimented with a lot of them.  On the material side […]