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

Startup company Plastic Back will launch a pilot recycling project at Freepoint Eco-Systems’ site in Hebron, Ohio. Plastic Back has developed a chemical recycling technology for PVC. The pilot will ...

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

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 ...

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 ...

A well-maintained fleet of injection molding machines can contribute to your company’s profitability. Scheduled maintenance activities extend the lifespan of the molding machines, safeguarding your ...

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 ...

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, ...

Producing plastics parts with undercuts presents distinct challenges for molders. Undercuts are protrusions or recessions in a part that prevent the mold, after the part is formed, from sliding away ...

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 ...

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 ...