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Title:
EMBOSSED METALLIC FOIL FOR CUSHIONING OF COILED ARTICLE OF METALLIC FOIL
Document Type and Number:
Japanese Patent JPH07145457
Kind Code:
A
Abstract:

PURPOSE: To prevent the excessive adhesion of the metallic foil on the outer circumferential part of a core attributable the expansion and contraction of the core and the outer side metallic foil and wrinkles and partial breakage attributable thereto in the annealing where the coiled article of the hard metallic foil is softened.

CONSTITUTION: The embossment where the roughness is #30-#70, the depth is 0.3-0.8μm, and the pitch is 0.2-1.0mm is executed on the metallic foil of 8-35μm of thickness to make the embossed metallic foil for cushioning with appropriately irregular surface. An appropriate cushioning layer is formed outside a core by coiling the embossed metallic foil several time around the core. The cushioning layer formed by coiling the metallic foil several times around the core releases the compression of the metallic foil close to the core which is caused in the annealing heat treatment of the coiled article of the metallic foil, and the generation of defective parts is reduced.


Inventors:
YAMAMOTO KANESHIGE
ARAKI KEIICHI
SASAOKA KAZUHIKO
Application Number:
JP31903793A
Publication Date:
June 06, 1995
Filing Date:
November 24, 1993
Export Citation:
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Assignee:
NIPPON FOIL MFG
International Classes:
C22F1/04; B21C47/28; B21D31/00; B21D33/00; B65H19/22; C21D1/68; C21D9/56; C22F1/00; (IPC1-7): C22F1/04
Domestic Patent References:
JPS62105967U1987-07-06
JPS6160144A1986-03-27
JPS6348685U1988-04-02
Attorney, Agent or Firm:
Takashi Yamamoto