November is a time for giving thanks, and this month PT’s readers were grateful to read about a new catalyst technology, ...

Carbon black pigments have been standard for black parts. However, these pigments block the signal of NIR optical sorting ...

The surface temperature of the root of the screw is an important factor for solids conveying, melting and the conveying of molten resin in a single-screw extruder. Only the solids conveying section of ...

Bio-Fed, a branch of Akro-Plastic, launched a specialized compound for coffee capsules, M-Vera GP1065. The biocompound is designed to protect aroma and extend shelf life through enhanced barrier ...

The AIM Institute has created a new plastics technology certificate program targeting industry interest in tested credentials.

Today, more than ever, granulation is an important step in the total production process. For many processors, specifically those making industrial parts, regrind has often been considered a problem or ...

Wood-plastic composite (WPC) products were first widely marketed in the early 1990s as weather-resistant decking. The product concept has evolved rapidly into railing, fencing, trim, automotive parts, ...

Viscosity for non-Newtonian polymers is a combination of increasing temperature and shear rate, as described by the following relationship: where viscosity (η) equals consistency index (m) times the ...

The intensification ratio is equal to the ratio of the effective areas of the hydraulic ram to that of the screw check valve. Since those values often are not readily available, the intensification ...

With the conversion to “cleaner” blowing agents firmly in place for polyurethane foam production, there is now a strong movement under way to use bio-based renewable resources as raw-material ...

In a previous article, we briefly discussed the influence of time as the second important factor in the mechanical response of polymers. The flip side of time is strain rate. The rate of loading for a ...

Polyethylene has been around as a commercial material for a little over 70 years. It was one of the early developments in synthetic thermoplastics. Given its long history, it could be assumed that we ...