Title:
MANUFACTURE OF CROSSING LAYER MICRO-POROUS MEMBRANE BATTERY SEPARATOR AND BATTERY SEPARATOR THUS MANUFACTURED
Document Type and Number:
Japanese Patent JP3440176
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable the manufacture of a separator having its superior rigidity by bonding first and second layers with each other in a planar contact shape and an orientation direction of the first layer being set to a certain angle with respect to that of the second layer.
SOLUTION: A crossing layer station 22 employs a micro-porous membrane wound from at least two rolls 18a obtained from a slit/winding station and is supplied so that deviation of one angle of the membrane is reversed with respect to that of the other membrane. However, if desired, it is required that only one of the membranes wound at the crossing station 22 have an orientation with deviation at a certain angle with respect to a lengthwise direction of the membrane, but the other membrane may have an orientation parallel to a longer axis of the membrane. In any case, the micro-porous membrane is wound from respective roll 18a based on a relationship in this planar internal in order to guarantee that angle deviation is established between the two layers.
Inventors:
Way-Ching You
Carlton F Dougins
Carlton F Dougins
Application Number:
JP33441595A
Publication Date:
August 25, 2003
Filing Date:
December 22, 1995
Export Citation:
Assignee:
CELGARD INC.
International Classes:
B29C55/02; B29C55/06; B29C70/04; B29C70/06; B32B5/32; B32B27/32; H01M6/16; H01M50/403; H01M50/417; H01M50/449; B29K23/00; B29L9/00; H01M6/50; (IPC1-7): H01M2/16; B29C55/02; H01M2/18
Domestic Patent References:
| JP278163A | ||||
| JP6372063A | ||||
| JP5626105B1 |
Other References:
【文献】米国特許4439260(US,A)
Attorney, Agent or Firm:
Takehiko Saito (1 outside)
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