Manufacturing process to grain a thermo- - plastic coated imitation leather

摘要

The material is pulled off of a supply roll and piled up in uneven, distorted waves in a tumbler drum which is filled 30% - 70% full. The material is crumpled and creased inside the tumbler and then drawn off and straightened up over guide rollers and then rewound. The drum rotates up to 300 degrees with 20 - 30 swings per minute.