Title:
ENTRY SHEET FOR PERFORATING PCB (PRINTED CIRCUIT BOARD) AND FABRICATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2010/038977
Kind Code:
A2
Abstract:
The present invention relates to an entry sheet for perforating a PCB (Printed Circuit Board) and a fabrication method thereof. More specifically, the present invention relates to an entry sheet for perforation prepared by coating a base with a water-soluble polyester resin, and a fabrication method thereof. The entry sheet according to the present invention is manufactured by forming a coating layer through the application of a water-soluble polyester solution on a thin metal sheet. The entry sheet according to the present invention ensures excellent uniformity and accuracy of perforated holes. In addition, as the entry sheet does not require a separate lubricant component or additional primer layer for a board thereof, the entry sheet has high quality and is economical.
Inventors:
HONG CHANG IL (KR)
NAM SOON HEE (KR)
NAM SOON HEE (KR)
Application Number:
PCT/KR2009/005592
Publication Date:
April 08, 2010
Filing Date:
September 30, 2009
Export Citation:
Assignee:
HONG CHANG IL (KR)
NAM SOON HEE (KR)
NAM SOON HEE (KR)
International Classes:
B23B47/28; B23B41/00; H05K3/00
Foreign References:
| KR100672775B1 | 2007-01-22 | |||
| KR100657427B1 | 2006-12-07 | |||
| KR20070115732A | 2007-12-06 | |||
| JPH05169400A | 1993-07-09 | |||
| KR100814048B1 | 2008-03-18 |
Attorney, Agent or Firm:
PARK, SANG HOON (KR)
박상훈 (KR)
박상훈 (KR)
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