Patent ID: 7435365
Filing Date: 2008-10-14
Classification: B29C

Abstract:
1. A method of making a hollow foamed member, comprising the steps of: a) preparing a foamable raw material having rubber, an accelerator and foaming agents with various decomposition speeds in a predetermined ratio; b) stirring and pressing the foamable raw material repeatedly; c) pressing the foamable raw material to have a rubber sheet and; d) putting the rubber sheet in a cavity of a die for vulcanization and foaming to have a foamed member, in which the foaming agents have chemical reactions in different temperatures to form an air cell in the foaming member, the method further comprising the step of performing a softening process on a surface of the rubber sheet to soften the surface, and then lying an attachment on a surface of the rubber sheet, and then pressing the attachment to bond it on the surface of the rubber sheet between the step c) and step d).