Manufacture of polyethylene molded article having excellent transparency

Abstract

Abstract PURPOSE:To obtain the titled molded article having excellent compatibility with polyethylene and excellent transparency and rigidity, by adding a small amount of a polypropylene wax having a specific physical property to a specific low-density linear polyethylene, and molding the composition at a temperature within a specific range. CONSTITUTION:The objective molded article is obtained by compounding (A) a low-density linear polyethylene having a density of 0.90-0.94g/cm<3> by density gradient tube, a melt flow rate of 0.1-90g/10min under the load of 2.16kg at 190 deg.C, exhibiting one or more melting points by differential scanning calorimeter wherein the highest melting point is 100-130 deg.C with (B) 0.05-0.9wt% polypropylene wax having an intrinsic viscosity of 0.05-1dl/g measured in decaline at 135 deg.C, a melting point of >=145 deg.C measured by a differential scanning calorimeter, and an isotacticity of >=95 measured by nuclear magnetic resonance adsorption, and molding the composition at <=160 deg.C.

Inventors

• 👤 Hidenori Sakai
• 👤 酒井　英紀
• 👤 Seiji Shiyudo
• 👤 首藤　誠二
• 👤 Hiroichi Kajiura
• 👤 梶浦　博一

Bibliographic Details