| 摘要 |
PURPOSE: A multilayered color sheet manufacturing method is provided to improve adhesion force of a thermoplastic poly urethane layer and a poly urethane skin layer by forming embossing on a thermoplastic poly urethane layer. CONSTITUTION: A multilayered color sheet manufacturing method is as follows. Mixture mixing scraps left after being used in the manufacture of shoes, virgin-type thermoplastic poly urethane, and nitrile butadiene rubber is inserted in a chamber. Hot melt and a polyethylene resin are inserted in the other chamber. Two mixtures are simultaneously extruded by a co-extrusion and passes through an embossing roller to emboss the surface of the thermoplastic poly urethane layer. The thermoplastic poly urethane layer and the poly urethane skin layer are attached by a lamination method. [Reference numerals] (AA) Embossing; (BB) TPU layer; (CC) Hot melt layer; (DD) PE release paper layer
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