ENTRY SHEET FOR FINE PORE DRILLING, AND DRILLING METHOD USING SAME

WIPO Patent Application WO/2018/221440

A1

Provided is an entry sheet for drilling a fine pore having a diameter of not more than 0.075 mm, the sheet having a metallic foil and a resin composition layer which is formed on at least one surface of the metallic foil and which comprises a polyolefin resin (A), a low-molecular water-soluble lubricant (B), and a water-soluble resin (C), wherein: the water-soluble resin (C) contains a high-molecular weight water-soluble resin (c-1) and an intermediate-molecular weight water-soluble resin (c-2); and, with respect to 100 parts by mass of the polyolefin resin (A), low-molecular water-soluble lubricant (B), and water-soluble resin (C) combined, the contained amount of the polyolefin resin (A) is 15-25 parts by mass, the contained amount of the low-molecular water-soluble lubricant (B) is 5-40 parts by mass, and the contained amount of the water-soluble resin (C) is 35-80 parts by mass.

WO/2015/027775	MICRO-DRILL
JP6296644	Automatic backup chip feeder for drilling equipment
JP2002154094	PERFORATING SHEET FOR LAMINATED PLATE AND PERFORATING METHOD FOR LAMINATED PLATE

KAMEI TAKAYUKI (JP)
MATSUYAMA YOUSUKE (JP)
ISHIKURA KENJI (JP)

PCT/JP2018/020300

December 06, 2018

May 28, 2018

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MITSUBISHI GAS CHEMICAL CO (JP)

B26F1/16; B23B49/00; C10M105/14; C10M105/40; C10M107/34; C10M145/10; C10M145/28; C10M145/30; C10M145/40; C10M149/10; H05K3/00; H05K3/46; C10N20/04; C10N30/00; C10N40/22

WO2010140333A1	2010-12-09
WO2017038867A1	2017-03-09
WO2015152162A1	2015-10-08

JP2011183548A

2011-09-22

INABA, Yoshiyuki et al. (JP)

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