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Entry plate for drilling

A cover plate and resin composition technology, applied in metal processing, electrical components, printed circuit manufacturing, etc., can solve problems such as gaps and slow development of printed circuit board technology, achieve excellent hole position accuracy, reduce drill damage, and reduce costs Effect

Active Publication Date: 2015-09-30
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, compared with the development of semiconductor technology, the development of printed circuit board technology is slow, and there has been a gap between the two

Method used

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  • Entry plate for drilling
  • Entry plate for drilling
  • Entry plate for drilling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] 30 parts by weight of polyethylene oxide (ALTOP MG-150, manufactured by Meisei Chemical Works, Ltd.) with a weight average molecular weight of 150,000 and 70 parts by weight of polyethylene glycol (PEG20000, manufactured by Sanyo Chemical Industries, Ltd.) with a weight average molecular weight of 20,000 were mixed. Ltd.) was dissolved in a mixed solution of water / MeOH (methanol) so that the resin solid content was 30%. At this point, the ratio of water to MeOH is 60 / 40. In addition, 5 parts by weight of zinc molybdate (manufactured by Nippon Inorganic Colour & Chemical Co., Ltd, particle diameter 0.4 μm to 13 μm, average particle diameter 3μm) as solid lubricant (B), and fully dispersed. The solution of the water-soluble resin composition was applied to an aluminum foil having an epoxy resin film having a thickness of 0.01 mm formed on one surface using a bar coater (aluminum foil used: 1N30, thickness 0.1 mm, manufactured by Mitsubishi Aluminum Co, Ltd. . system) so...

Embodiment 2 to 14

[0070] The water-soluble resin composition shown in Table 1 was prepared according to the method of Example 1, thereby producing an entry sheet for drilling having a thickness of the water-soluble resin composition layer after drying of 0.05 mm.

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Abstract

Disclosed is an drill entry sheet which, compared with conventional drill entry sheets, has excellent hole position accuracy and reduced drill bit breakage. A layer comprising a resin composition is formed on at least one side of a metal support foil. The aforementioned resin composition is blended with a solid lubricant containing zinc molybdate and / or molybdenum trioxide. The thickness of the aforementioned resin composition layer is in the range of 0.02-0.3mm.

Description

technical field [0001] The present invention relates to an entry plate for drilling used in drilling copper-clad laminates or multilayer boards. Background technique [0002] As a method of drilling copper-clad laminates or multilayer boards for printed wiring board materials, it is generally used to stack one or more copper-clad laminates or multilayer boards on which a simple metal foil such as aluminum or a A method of forming a sheet of the resin composition on the surface of the metal foil (hereinafter, the sheet is generally referred to as a "drilling entry sheet") as a reinforcing plate, and drilling holes. [0003] In recent years, the requirements for copper-clad laminates or multilayer boards for printed wiring board materials have become high densification development, productivity improvement, cost reduction and reliability improvement, and high-quality drilling with hole position accuracy improvement, etc. . In order to cope with these needs, for example, Pate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B26F1/16H05K3/00
CPCH05K3/0047H05K2203/0214B26F1/16H05K3/00
Inventor 龟井孝幸堀江茂羽崎拓哉松山洋介宫平哲郎
Owner MITSUBISHI GAS CHEM CO INC
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