| 摘要 |
PURPOSE:To prevent the dry spot of a cell and a void while obviating blister, cracking and shrinkage at the time of mold release by forming a skin of a vinyl chloride resin containing a plasticizer and including a plasticizer at specific rates to the 100 pts.wt. total weight of a polyol component and an isocyanate component in a foam molding material in a skin integral urethane foam foaming method. CONSTITUTION:A skin is formed of a vinyl chloride resin containing a plasticizer, and the kinds and loadings of the plasticizers are not limited particularly, and the same plasticizers as conventional methods are used. Polyether polyol is employed generally as the polyol component of a foam molding material and an aromatic group polyisocyanate as an isocyanate component. A plasticizer selected from phthalic ester, trimellitic ester, aliphatic bibasic ester, phosphoric ester and epoxidized ester in conventionally known compounds displays a particularly excellent effect as the plasticizer included in the foam molding material. These plasticizers are used singly or in the combination of plural kinds, and loadings thereof are kept within the 5-50 pts.wt. range of the plasticizer to the 100 pts.wt. total loadings of the polyol component and the isocyanate component. |
