| 摘要 |
PURPOSE:To reduce scratched defects due to carriage by making a conveyor belt of laminated synthetic leathers of polyethylene fabrics on top of a urethane belt via an adhesive layer. CONSTITUTION:A belt for carrying a laminated board of copper lined multi-layer materials is made of a flat urethane belt 3 monolithically laminated with the synthetic leather 1 of polyethylene fabrics via an adhesive layer 2. Then, the polyethylene fabrics come in soft contact with a copper foil surface and no scratch is generated thereon, as the friction coefficient of polyethylene is small. Though it was inevitable to adjust a motor for low speed start to high speed feed and then to low speed stop in a motor control for starting and stopping a conventional conveyor belt, it becomes possible to make the simple control of starting and stopping at a steady speed. And the occurrence of scratch defects on the laminated board due to the carriage thereof can be remarkably reduced.
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