Title:
積層材の曲げ加工方法
Document Type and Number:
Japanese Patent JP3597441
Kind Code:
B2
Abstract:
A method of bending a composite panel comprises: forming an assembly of two flat face sheets (11,12), and a flat center core (13), the core (13) not joined to a portion of the second face sheet (12); while holding the first face sheet (11) on a support having a stationary portion (30) and a movable portion (40), lifting the non-joined portion of said second face sheet (12) and to bend the non-joined portion to separate it from the core (13); removing a portion of the core (13) to form a V shape at the location of the bend; coating an adhesive on second face sheet or the opposed face of the core and bringing the core into contact with the non-joined portion of the second face sheet to adhere them by rotating the movable portion (40). The bend is formed without cutting the face sheet and without surface defects.
Inventors:
Satoru Okada
Wataru Kawamura
Wataru Kawamura
Application Number:
JP2000079276A
Publication Date:
December 08, 2004
Filing Date:
March 16, 2000
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B21D5/00; B21D11/20; B21D47/00; B32B3/02; B29C53/36; B32B1/00; B32B3/12; (IPC1-7): B32B1/00; B29C53/36; B32B3/12
Domestic Patent References:
| JP54028373A | ||||
| JP62196132A |
Foreign References:
| US4078959 |
Attorney, Agent or Firm:
Patent Business Corporation Daiichi International Patent Office