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 (504-403, Yeolmae Maeul 5 Danji877 Jijok-dong, Yuseong-gu, Daejeon 305-770, 305-770, KR)
홍창일 (대전 유성구 지족동 877 열매마을아파트 5단지 504-403, 305-770 Daejeon, 305-770, KR)
홍창일 (대전 유성구 지족동 877 열매마을아파트 5단지 504-403, 305-770 Daejeon, 305-770, KR)
Application Number:
KR2009/005592
Publication Date:
April 08, 2010
Filing Date:
September 30, 2009
Export Citation:
Assignee:
HONG, Chang Il (504-403, Yeolmae Maeul 5 Danji877 Jijok-dong, Yuseong-gu, Daejeon 305-770, 305-770, KR)
홍창일 (대전 유성구 지족동 877 열매마을아파트 5단지 504-403, 305-770 Daejeon, 305-770, KR)
홍창일 (대전 유성구 지족동 877 열매마을아파트 5단지 504-403, 305-770 Daejeon, 305-770, KR)
International Classes:
B23B47/28; B23B41/00; H05K3/00
Attorney, Agent or Firm:
PARK, Sang Hoon (4th floor Sewon Bldg, 823-48 Yeoksam1-dongGangnam-gu, Seoul 135-080, 135-080, KR)
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