| 摘要 |
Disclosed herein is a joint structure of a core layer and a skin layer for manufacturing a partial foaming part having a polyurethane foam layer formed between the core layer and the skin layer. A recess is formed on the core layer corresponding to the joint of the core layer and the skin layer. The recess includes at the inside thereof a guiding wall for the skin layer and a pressing wall. A bent portion and a resilient supporting portion are formed in the end portion of the skin layer to be inserted inside the recess. The bent portion is bent upwardly so as to contact the guiding wall. The resilient supporting portion is resiliently supported underneath the pressing wall.
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