Title:
FOAMED RESIN SHEET
Document Type and Number:
WIPO Patent Application WO/2024/048521
Kind Code:
A1
Abstract:
Provided is a foamed resin sheet with which it is possible to reduce the discarded amount of resin material caused by trimming after molding in a molding method such as vacuum molding or pressure molding. This foamed resin sheet 1 is an extruded sheet. The foamed resin sheet 1 includes one edge 2 in the width direction extending along the extrusion direction, another edge 3 in the width direction extending along the extrusion direction of the foamed resin sheet 1 on the opposite side of the one edge 2, and a center 4 positioned between the one edge 2 and the other edge 3. At least a portion of the one edge 2 and the other edge 3 has an apparent density lower than the center 4. The edge 2 and the edge 3 become grip parts to be fixed to a molding machine during vacuum molding or the like, and are removed by trimming. The apparent density of the edge 2 and the edge 3 is low, or in other words, the amount of resin is low, and thus it is possible to reduce the discarded amount of resin material removed by trimming.
Inventors:
GOTO TOSHIHARU (JP)
YAMAMOTO SATOSHI (JP)
MIZUTANI KEI (JP)
YAMAMOTO SATOSHI (JP)
MIZUTANI KEI (JP)
Application Number:
PCT/JP2023/030995
Publication Date:
March 07, 2024
Filing Date:
August 28, 2023
Export Citation:
Assignee:
MAXELL LTD (JP)
International Classes:
B29C44/50; B29C44/00; B29C44/60; B29C48/08; C08J9/36; B29L7/00
Foreign References:
| JP2001138383A | 2001-05-22 | |||
| JP2021535862A | 2021-12-23 | |||
| JPH0592745A | 1993-04-16 | |||
| JPH0948054A | 1997-02-18 |
Attorney, Agent or Firm:
UEBA, Hidetoshi et al. (JP)
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