SHAPING MASS AND METHOD FOR MANUFACTURING POLYETHYLANE FOILS BY MEANS OF CALENDER

摘要

The description relates to a moulding compound for calendering synthetic thermoplastic films or plates and a process for producing films or plates of high-density polyethylene (HDPE) or a mixture of HDPE and ethylene-vinyl acetate copolymer (EVA). The moulding compound consists principally of: a1) a HDPE or a HDPE mixture; or a2) a mixture of HDPE and EVA; whereby the moulding compound has: b1) a melting index MFI (190 DEG C/21.6 kg) to DIN 53 735 of < 7 g/10 min; or b2) a melting index MFI (190 DEG C/21.6 kg) to DIN 53 735 of < 10 g/10 min and contains 0.5 to 3 % wt. bisstearoyl ethylene diamine and/or metal salts of carboxylic acids as processing auxiliaries. The moulding compound is mixed and plasticised at a temperature of about 170 to 180 DEG C, rolled out to a web at a temperature of 175 to 190 DEG C and finally calendered at a temperature of < 190 DEG C.