Title:
ENTRY SHEET FOR PRINTED CIRCUIT BOARD HOLE BORING, WATER-SOLUBLE LUBRICATING RESIN COMPOSITION USED WITH SAME AND PRODUCTION METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2011/025144
Kind Code:
A2
Abstract:
The present invention relates to an entry sheet for printed circuit board hole boring, comprising: a metal thin film substrate; and a water-soluble lubricating resin layer formed on the substrate, wherein the water-soluble lubricating resin layer comprises 100 parts by weight of a water-soluble polyester resin, from 0.5 to 3 parts by weight of a vinyl chloride - vinyl acetate copolymer and from 0.5 to 3 parts by weight of a hydrogenated hydrocarbon resin. In entry sheets produced in this way, the uniformity and accuracy of the bored holes is outstanding, the force of binding onto the metal thin film is exceptional, and there is no peeling or crack generation on the surface even at low temperature.
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Inventors:
HONG, Chang-Il (# SK HUB Apt, Jijok-dong Yuseong-gu, Daejeon 305-330, 305-330, KR)
홍창일 (대전광역시 유성구 지족동 894-5 SK허브아파트 1동 1010호, 305-330 Daejeon, 305-330, KR)
JEON, Jin-Soo (#102, 1478-9 Mugeo 1-dongNam-gu, Ulsan 680-810, 680-810, KR)
전진수 (울산광역시 남구 무거1동 1478-9 102호, 680-810 Ulsan, 680-810, KR)
홍창일 (대전광역시 유성구 지족동 894-5 SK허브아파트 1동 1010호, 305-330 Daejeon, 305-330, KR)
JEON, Jin-Soo (#102, 1478-9 Mugeo 1-dongNam-gu, Ulsan 680-810, 680-810, KR)
전진수 (울산광역시 남구 무거1동 1478-9 102호, 680-810 Ulsan, 680-810, KR)
Application Number:
KR2010/004487
Publication Date:
March 03, 2011
Filing Date:
July 09, 2010
Export Citation:
Assignee:
SANG-A FLONTEC CO., LTD. (614-4, Namchon-dongNamdong-gu, Incheon 405-846, 405-846, KR)
(주)상아프론테크 (인천광역시 남동구 남촌동 614-4, 405-846 Incheon, 405-846, KR)
HONG, Chang-Il (# SK HUB Apt, Jijok-dong Yuseong-gu, Daejeon 305-330, 305-330, KR)
홍창일 (대전광역시 유성구 지족동 894-5 SK허브아파트 1동 1010호, 305-330 Daejeon, 305-330, KR)
JEON, Jin-Soo (#102, 1478-9 Mugeo 1-dongNam-gu, Ulsan 680-810, 680-810, KR)
(주)상아프론테크 (인천광역시 남동구 남촌동 614-4, 405-846 Incheon, 405-846, KR)
HONG, Chang-Il (# SK HUB Apt, Jijok-dong Yuseong-gu, Daejeon 305-330, 305-330, KR)
홍창일 (대전광역시 유성구 지족동 894-5 SK허브아파트 1동 1010호, 305-330 Daejeon, 305-330, KR)
JEON, Jin-Soo (#102, 1478-9 Mugeo 1-dongNam-gu, Ulsan 680-810, 680-810, KR)
International Classes:
B23B41/00; B23B35/00; B32B15/09; C09D5/00; C09D131/04; C09D133/04; H05K3/00
Attorney, Agent or Firm:
J.C.HYUN PATENT & LAW FIRM (Dooji Bldg. 4F, 353-18Shindang 2-dong, Jung-gu, Seoul 100-828, 100-828, KR)
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