| 摘要 |
PURPOSE:To obtain a foamed formed article light in weight, flexible and strong and suitable for automotive interior trim, by a method wherein a metallic mold for dip forming is preheated, thereafter it is dipped into a sol composition containing a foaming agent, is drawn out from the sol composition, is heated, and the foamed body obtained is released from the mold after reversing inside out. CONSTITUTION:After preheating the metallic mold for dip forming to a temperature of generally 140-250 deg.C, it is dipped into a sol composition (e.g., a plastisol or an organosol) containing preferably 0.5-10wt% of a chemical foaming agent (e.g., azodicarbonamide or sodium hydrogen carbonate), is drawn out from the sol composition, and is heated to a temperature of generally 160-250 deg.C to melt and foam the sol composition adhered to the metallic mold. Then, the foamed body obtained is released from the mold by reversing inside out so that a foamed surface is directed to the inside. EFFECT:The inside part of the formed article is sufficiently foamed, so that adhesion to urethane is favorable when pouring urethane into the formed article, and the surface of the formed article is free from pinholes, flaws or the like and has beautiful appearance. |
