发明名称 ENTRY BOARD FOR DRILLING PCB
摘要 PURPOSE: An entry board for drilling a printed circuit board is provided to solve the problem that resin on an entry board of a printed circuit board adheres to a drill bit during drilling of the printed circuit board. CONSTITUTION: An entry board for drilling a printed circuit board is manufactured by coating an adhesion promoter(23) having polarity on an aluminium thin plate(10) and extrusion-coating polyethylene resin(33) on the adhesion promoter. The polyethylene resin is PE(Poly-ethylene) or EVA(Ethylene- Vinyl-Acetate). The thicknesses of the aluminium thin plate is 80~150um, and the thickness of the polyethylene resin layer is 20~40um.
申请公布号 KR20100080687(A) 申请公布日期 2010.07.12
申请号 KR20090000090 申请日期 2009.01.02
申请人 OH, DU YOUNG;GIM, MI SEON;CHOI, SUNG JIN 发明人 OH, DU YOUNG;CHOI, SUNG JIN;GIM, MI SEON
分类号 B23B41/00;B26F1/00 主分类号 B23B41/00
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