Title:
METHOD FOR PUNCHING ALUMINUM RESIN COMPOSITE LAMINATE PLATE
Document Type and Number:
Japanese Patent JP2017217665
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for punching an aluminum resin composite laminate plate which can suppress poor appearance such as sagging and burrs.SOLUTION: A foam synthetic resin layer 13 of a blank plate material 10 has an expansion ratio of 1.5 times or more and 10 times or less and a plate thickness t3 of 1 mm or more and 10 mm or less, and a tensile strength of a first aluminum plate material 11 arranged on one surface of aluminum plate materials 11 and 12 laminated on both surfaces of the foam synthetic resin layer 13 is set to be smaller than a tensile strength of the second aluminum plate material 12 arranged on the other surface, and a punching step includes penetrating a punch 41 from the side of the first aluminum plate material 11 of the blank plate material 10 toward the side of the second aluminum plate material 12 at normal temperature.SELECTED DRAWING: Figure 1
Inventors:
YAMAMOTO MASAHIRO
Application Number:
JP2016113351A
Publication Date:
December 14, 2017
Filing Date:
June 07, 2016
Export Citation:
Assignee:
MITSUBISHI ALUMINIUM
International Classes:
B21D28/16; B21D28/18; B21D28/34; B21D37/01; B32B3/24; B32B5/18; B32B15/08
Domestic Patent References:
| JP5626995B2 | 2014-11-19 | |||
| JPH0443027A | 1992-02-13 |
Foreign References:
| WO2010029955A1 | 2010-03-18 | |||
| EP0692371A1 | 1996-01-17 |
Attorney, Agent or Firm:
Masakazu Aoyama
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