| 摘要 |
PURPOSE: A crack formation method for a raw leather cloth coated with polyurethane, and the leather cloth with cracks are provided to improve the quality of the leather cloth. CONSTITUTION: A crack formation method for a raw leather cloth coated with polyurethane comprises the following steps: applying the tensile force to both ends of the leather cloth; and unevenly striking the lower side of the leather cloth. The upper side of the leather cloth is coated with the polyurethane.
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