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Laminated aluminium-base cover board for PCB drilling and preparation method of cover board

A film-coated aluminum-based cover plate and aluminum foil technology, which is applied in coatings, polyester coatings, polyether coatings, etc., can solve the problems of low drilling accuracy, slow curing speed of the resin layer, and low drilling efficiency, and achieve improved Drilling accuracy, fast curing speed, and high production efficiency

Active Publication Date: 2014-07-23
SHENZHEN NEWCCESS IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a film-coated aluminum-based cover plate for PCB drilling and a preparation method thereof, aiming at solving the problem of low drilling accuracy of the film-coated aluminum foil cover plate for PCB drilling at present. The problem of low hole efficiency and slow curing speed of the resin layer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Get the unsaturated polyester that is 40 parts by weight, get the component A1 that cyclohexanone peroxide, cobalt naphthenate form, get the component A2 that 55 parts of polyethylene oxide, polyethylene glycol form, get 5 parts again Basic lead carbonate is mixed to form an emulsion. The emulsion is sprayed on the surface of the aluminum foil by a coating machine, then sprayed with a curing agent, and dried at 50°C to obtain a finished product.

Embodiment 2

[0032] Get parts by weight and be 50 parts of unsaturated polyester, the component A1 that dicumyl peroxide, cobalt naphthenate, inhibitor form, get 42 parts of polyoxyethylene, polyethylene glycol, glycerin, vinyl acetate, Polyvinyl alcohol constitutes component A2, and 8 parts of paraffin and calcium carbonate are mixed to form an emulsion. The emulsion is sprayed on the surface of the aluminum foil by a coating machine, then sprayed with a curing agent, and dried at 90°C to obtain a finished product.

Embodiment 3

[0034] Take 35 parts of unsaturated polyester, dicumyl peroxide, cobalt naphthenate, water-based melamine resin, urea-formaldehyde resin to form component A1, take 60 parts of polyethylene oxide, polyethylene glycol, vinyl acetate, polyvinyl alcohol To form component A2, take 5 parts of calcium carbonate and mix to form an emulsion. The emulsion is sprayed on the surface of aluminum foil by a coating machine, and then sprayed with a curing agent, and dried at 70°C to obtain a finished product.

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PUM

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Abstract

The invention provides a laminated aluminium-base cover board for PCB drilling and a preparation method of the cover board. The method is characterized by taking 30-50 parts by weight of both unsaturated polyester and adjuvants as components A1, then taking 42-60 parts by weight of two or more than two of polyoxyethylene, polyethylene glycol, glycerol, vinyl acetate and polyvinyl alcohol to form components A2, then taking 2-8 parts by weight of auxiliaries, mixing the components A1 and A2 and the auxiliaries to form emulsion, spraying the emulsion onto the surface of an aluminium foil and drying the surface, thus preparing the finished product. Compared with the existing laminated aluminium cover boards, the laminated aluminium cover board has the beneficial effects that the hardness of a base resin layer on the surface of the laminated aluminium cover board is higher, thus improving the hardness difference between the base resin layer and the aluminium foil and improving the drilling precision; the base resin layer has higher curing speed and lower braking temperature, so that the laminated aluminium cover board is lower in machining energy consumption and has higher production efficiency.

Description

technical field [0001] The invention relates to the field of PCB processing and manufacturing, in particular to a film-coated aluminum base cover plate for PCB drilling and a preparation method thereof. Background technique [0002] The coated aluminum foil cover plate before the printed circuit board (referred to as PCB) generally uses epoxy resin, acrylic resin, polyurethane, phenolic resin, etc. slow. Lower hardness will affect the drilling accuracy of the drill pin, thereby affecting the drilling efficiency. In addition, the slower curing speed reduces the processing efficiency of the coated aluminum-based cover plate, which in turn increases the energy consumption of the cover plate processing. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a film-coated aluminum-based cover plate for PCB dril...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06C09D171/02C09D171/08C09D129/04
Inventor 罗小阳杨柳周虎唐甲林秦先志
Owner SHENZHEN NEWCCESS IND
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