POLYOLEFINE FOAM SHEET PRODUCTION METHOD AND DEVICE THEREOF

摘要

A polyolefine foam sheet production method using a device having first and second heating rolls (62, 63) and provided with an endless belt (65) passed around the rolls and rotated, wherein a foaming base sheet (69) is brought into contact with the first roll (62) via the belt (65) and heated at temperatures not lower than a temperature to permit thermocompression-bonding to the belt (65) and lower than a foaming initiation temperature to thermocompression-bond the sheet (69) to the belt (65); then the sheet (69) is brought into contact with the second roll (63) via the belt (65) and heated for foaming at temperatures not lower than a foaming initiation temperature to form a foam sheet (61), whereby stretching/shrinking and wrinkling of the foam sheet at heating/foaming can be prevented.