Patent ID: 8721825
Filing Date: 2014-05-13
Classification: B29C,B29D,B29L,D04H

Abstract:
1. A method of forming a cushion of spring-like structure made of continuous filaments tangled at random in loops and made to partly adhere to one another with heat, the method comprising: a compression step of compressing a three-dimensional netted structure having two surfaces, three surfaces, four surfaces, or a greater number of surfaces formed thereon with a mold; a thermal softening step of thermally softening the three-dimensional netted structure with a heating medium; a curing step of forcibly or naturally cooling down the three-dimensional netted structure with a coolant to cure texture of the three-dimensional netted structure; a mold release step of releasing the three-dimensional netted structure from the mold; and an additional compression step of additionally compression-forming a compressed part of the three-dimensional netted structure, wherein an end area of the additionally compression-formed part is formed into a fastening rim for fastening the three-dimensional netted structure to another object in a later assembly step.