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 ...

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 ...

Pearlescence, haze, rocker bottoms, and top-load failure are common ills that can afflict PET bottles. Cures for all of these are readily available. An article in the December 2014 issue (Blow Molding ...

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 ...

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 ...

The blown film industry has evolved from monolayer film structures to multilayer ones for a variety of food and non-food packaging applications. Depending on the product requirements, a wide array of ...

The demand for sustainable packaging solutions is on the rise as consumers and environmentally conscious organizations continue to look for ways to reduce plastic waste and their carbon footprint.

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 ...