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Patent Searching and Data


Title:
PERFORATED MATERIAL AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH11114334
Kind Code:
A
Abstract:

To enable effectively and accurately forming relatively small openings by forming preliminary holes in a plate material consisting of plastically deformative material before shear deforming the plate material in the surface direction and forming a plurality of formed holes each deformed into a long and slender shape.

A perforated material having a plurality of openings is formed of a plate material 1 formed of metal materials, such as stainless steel, iron, and copper. That is, in the plate material 1, a lot of lozenge-shaped preliminary holes are previously formed in prescribed arrangement, such as staggered arrangement by punching work, laser work, and etching work. The plate material 1 in which such preliminary holes 2 are formed is plastically deformed so as to be shear deformed in both directions, as shown by arrows A, B. In this way, a perforated material having slit-shaped formed holes 2a is formed. And such perforated material is stamped out in the suitable shape to form a product such as a fluid permeable wall material for holding a filter medium or particles.


Inventors:
SAWADA SHOHEI
Application Number:
JP27900897A
Publication Date:
April 27, 1999
Filing Date:
October 13, 1997
Export Citation:
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Assignee:
NIPPON KINZOKU CO LTD
International Classes:
B01D39/00; B01D39/14; B21D31/04; B29C67/20; B29L31/14; (IPC1-7): B01D39/14; B01D39/00; B21D31/04; B29C67/20
Attorney, Agent or Firm:
Takehiko Suzue (5 outside)