Title:
BLANK MATERIAL FOR DRAW MOLDING OF ALUMINUM RESIN COMPOSITE LAMINATE BOARD AND METHOD FOR MANUFACTURING THREE-DIMENSIONAL MOLDED ARTICLE USING THE SAME
Document Type and Number:
Japanese Patent JP2017192972
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To further enhance moldability of a three dimensional molded article to be available when produced by draw molding, to obtain an excellent appearance property after molding.SOLUTION: A blank material for draw molding is used for draw-molding an aluminum resin composite laminate board to which aluminum plate materials are joined, in a laminate state, onto both sides of a foamed synthetic resin layer having an expansion ratio of 1.5-10 times, to produce a three-dimensional product defined by multiple corners and surfaces connecting the corners. The blank material is formed in a rectangular shape in a plane view, and comprises recessed corner parts corresponding to the product corners, formed with continuous recessed circular arc parts between two outward facing protruding circular arc parts. A curvature radius of the protruding circular arc part is configured to be equal to or less than two times a molding depth dimension, while a curvature radius of the recessed circular arc part is configured to be less the molding depth dimension.SELECTED DRAWING: Figure 1
Inventors:
YAMAMOTO MASAHIRO
Application Number:
JP2016085265A
Publication Date:
October 26, 2017
Filing Date:
April 21, 2016
Export Citation:
Assignee:
MITSUBISHI ALUMINIUM
International Classes:
B21D22/20; B21D47/04; B32B5/18; B32B15/20
Attorney, Agent or Firm:
Masakazu Aoyama