Lubricant sheet for making holes and method of making holes with drill

A lubricant sheet suitable for use in a process of making a hole in a printed circuit board, which sheet comprises a water-soluble polymer layer, which has a thickness of 0.02 to 3.0 mm, and a metal foil having a thickness of 0.05 to 0.5 mm, said water-soluble polymer layer being formed on one surfa...

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Bibliographische Detailangaben
Hauptverfasser:	NAGAI, NORIO, TAGUCHI, MASARU, KOMATSU, SHINYA, EZIRI, MITSUO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BORING CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MACHINE TOOLS MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PRINTED CIRCUITS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING TURNING
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Beschreibung
Zusammenfassung:	A lubricant sheet suitable for use in a process of making a hole in a printed circuit board, which sheet comprises a water-soluble polymer layer, which has a thickness of 0.02 to 3.0 mm, and a metal foil having a thickness of 0.05 to 0.5 mm, said water-soluble polymer layer being formed on one surface of said metal foil, wherein said metal foil is an aluminum foil having an aluminum purity of at least 99.5%.