Very Clear, Stiff PP For Blown Film

A new polypropylene for blown film is said to achieve a unique combination of high clarity, high stiffness, low gel content, and low odor, as well as good sealing performance.

A new polypropylene for blown film is said to achieve a unique combination of high clarity, high stiffness, low gel content, and low odor, as well as good sealing performance. Aimed at laminated film and food packaging, Clyrell RC 1314 random copolymer is the first resin for blown film in the Clyrell family of copolymers from Basell Polyolefins, Elkton, Md. Clyrell RC 1314 reportedly produces coex blown film without visible crystallization lines or milky haze. The resin boasts high heat resistance and allows for application of a thermal sealing gradient. Potential applications include retortable food pouches, hygienic packaging, and large pet-food bags. When combined with a barrier material like nylon or EVOH, Clyrell RC 1314 is said to make vacuum-formed blisters that exhibit reduced curling, good puncture resistance, and the ability to substitute PP for an external nylon layer while retaining stiffness and clarity.