Manufacturing method of cushion member

Details Manufacturing method of cushion member Manufacturing method of cushion member

B - Operations, Transporting

68

G

B68G 7/06 (2006.01) A47C 7/02 (2006.01) A47C 17/86 (2006.01) B29C 44/04 (2006.01)

Patent

CA 2354933

A manufacturing method of a cushion member which has a two-layer structure constituted by an obverse layer portion and a reverse layer portion and has no dispersion of thickness between the obverse layer portion and the reverse layer portion. Side cavities, a first cavity and a second cavity are formed in a lower die and side partitions and a front and rear partition are provided therein. A first raw material foams and flows within the first cavity, and a second raw material flows within the first cavity while being limited by a front and rear flow port with respect to a flow amount and a flow direction and covers over the first raw material so as to flow forward in such a manner as to follow the flow of a flow front end portion of the first raw material. Then, an obverse layer portion and a front edge portion made of the first raw material, and a reverse layer portion made of the second raw material are formed in the first cavity.

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