CN109913105A - A kind of Aluminum cover with water-soluble coating - Google Patents
A kind of Aluminum cover with water-soluble coating Download PDFInfo
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- CN109913105A CN109913105A CN201910033460.7A CN201910033460A CN109913105A CN 109913105 A CN109913105 A CN 109913105A CN 201910033460 A CN201910033460 A CN 201910033460A CN 109913105 A CN109913105 A CN 109913105A
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- water
- soluble
- soluble coating
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- aluminum cover
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Abstract
The present invention provides a kind of Aluminum cover with water-soluble coating, which is characterized in that including Aluminum cover, and the water-soluble coating of aluminium lid plate surface is arranged in.The aluminium surface resin water-soluble coating for the water-soluble resin that can be dissolved completely in water and the soluble oil preparation that the present invention uses, it is water-soluble preferably completely to dissolve in water, not have any residual, eliminate the cleaning treatment work in pcb board later period.
Description
Technical field
The invention belongs to PCB drilling processing auxiliary tool technology fields, and in particular to a kind of aluminium with water-soluble coating
Cover board.
Background technique
PCB back drill technology is to go Conductive layer portions non-transmitting in the via hole after heavy copper using machine drilling processing method
It removes, to guarantee the part signal transmission stability retained, is conducive to high speed transmission of signals.PCB back drill technology generallys use high frequency
Electronic induction principle drilling machine carries out drilling back drill processing, using high-frequency electronic conducting circuit by drill point tip contacts cover board (conductor)
Or pcb board starts to calculate the lower depth bored of design.The cover board that back drill generallys use at present has aluminium flake, single-side coated copper plate etc., uses
Aluminium flake carries out back drill drilling processing, at low cost, but since aluminum flake surface is smooth, easy entry bore skid and locating effect it is poor,
Hole position accuracy is low, and product is partially thin (0.14-0.20mm), exist with the degree of being adjacent to of pcb board not foot phenomenon, will affect drilling essence
Degree control, at the same aluminium flake conductive layer thicker (0.14-0.20mm) and thickness deviation it is larger, cause back drill drilling to control deep low precision,
It is currently in just gradually by market；Using single-side coated copper plate, then upper epidermis is insulation resin dielectric layer, and easy drill point enters
It bores, good positioning effect, hole position accuracy are high, and thin (≤35 μm) thickness deviation of copper foil metal conducting layer is small, and product is adjacent to pcb board
It spends, it is good that deep precision is controlled in drilling, but cost is excessively high, is more times of prices of aluminium flake, it is difficult to be received by user, while epoxy resin
Glass in glass compound inslation dielectric layer is unfavorable for drill point abrasion.
Summary of the invention
In view of this, the present invention provides a kind of Aluminum cover with water-soluble coating, what the present invention used can be completely dissolved
It is water-soluble preferable in aluminium surface resin water-soluble coating prepared by the water-soluble resin and soluble oil of water, in water may be used
Completely to dissolve, any residual is not had, eliminates the cleaning treatment work in pcb board later period.
The technical solution of the present invention is as follows: a kind of Aluminum cover with water-soluble coating, which is characterized in that including Aluminum cover,
And the water-soluble coating of aluminium lid plate surface is set.
Further, the water-soluble coating with a thickness of 20-120 μm.The thickness of the aluminium surface resin of coating is to drilling
Effect have large effect, when the aluminium surface resin of coating is too thick, the bits that generate are more when drilling, are easy to get lodged in
In the groove of drill point, chip removal function is influenced, so that influencing drilling controls deep precision；And when the aluminium surface resin of coating is too thin, it bores
Drill point is easily lost when hole.It can guarantee the performance of overlay film aluminium flake cover board using the aluminium surface resin with a thickness of 20-120 μm.Preferably,
The thickness control of the aluminium surface resin of coating is at 40-80 μm, to form the aluminium surface tree that thickness, hardness is more moderate, more easy entry is bored
Rouge.
Further, the water-soluble coating includes the component of following parts by weight: 30-60 parts of water-soluble resin, water-soluble
10-30 parts of lubricant, 10-40 parts of hot-melt resin of property.
Further, the water-soluble resin is the polyethyleneglycol block copolymer that average molecular weight is 5000-30000,
The soluble oil is the polyethyleneglycol block copolymer that average molecular weight is 1000-5000, and the hot-melt resin is
Average molecular weight is the polyethylene oxide of 50000-120000.Using above-mentioned raw materials preparation aluminium surface resin toughness relatively
It is low, there is certain brittleness, so that the discharge of break flour shape is presented in aluminium surface resin in borehole cuttings, it is not in wrapping phenomenon,
Drilling efficiency is high.This is because material viscosity is larger when the average molecular weight of the raw material of selection is excessive, final aluminium table obtained
Face resin toughness is too strong, so that the easy long filiform of presentation of aluminium surface resin is entangled in drill point root when PCB being caused to drill, hinders row
Bits, cause broken needle rate higher.
Further, the water-soluble resin is the polyethyleneglycol block copolymer that average molecular weight is 7000-15000,
The soluble oil is the polyethyleneglycol block copolymer that average molecular weight is 2000-4000, and the hot-melt resin is
Average molecular weight is the polyethylene oxide of 80000-100000.
In the present invention, the polyethyleneglycol block copolymer includes that polylactic acid, poly (lactic acid-glycolic acid) are copolymerized in the prior art
Any one of object, polycaprolactone, polytrimethylene carbonate.
Further, the water-soluble coating further includes 0.4-0.8 parts of adhesion promoters.
Further, the adhesion promoter be silane coupling agent, titanate coupling agent, complexing compound coupling agent in one
Kind.Adhesion promoter has the function of raising aluminium surface resin and substrate adhesive force, can significantly improve aluminium surface tree obtained
The binding force of rouge and aluminium base.The above-mentioned adhesion promoter of the present invention is chosen, aluminium surface resin and aluminium base of the invention can be made
Between form firm binding force, to significantly improve the performance of overlay film aluminium flake cover board obtained.
The aluminium surface resin for the water-soluble resin that can be dissolved completely in water and the soluble oil preparation that the present invention uses
Water-soluble coating, it is water-soluble preferable, it can completely dissolve in water, not have any residual, eliminate the pcb board later period
Cleaning treatment work.In addition, with more or less thermosetting resin is contained in the aluminium surface resin of traditional overlay film aluminium flake cover board
Compare, the present invention with hot-melt resin instead of thermosetting resin so that final obtained aluminium surface resin, that is, water-soluble and heat,
The problem low because of PCB quality caused by wrapping when avoiding drilling.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
A kind of Aluminum cover with water-soluble coating, which is characterized in that including Aluminum cover 1, and aluminium lid plate surface is set
Water-soluble coating 2.
Further, the water-soluble coating with a thickness of 50 μm.Effect of the thickness of the aluminium surface resin of coating to drilling
Fruit has large effect, and when the aluminium surface resin of coating is too thick, the bits generated when drilling are more, is easy to get lodged in drill point
Groove in, chip removal function is influenced, so that influencing drilling controls deep precision；And when the aluminium surface resin of coating is too thin, when drilling
Drill point is easily lost.It can guarantee the performance of overlay film aluminium flake cover board using the aluminium surface resin with a thickness of 20-120 μm.
Further, the water-soluble coating includes the component of following parts by weight: 45 parts of water-soluble resin, water solubility profit
18 parts of lubrication prescription, 22 parts of hot-melt resin.
Further, the water-soluble resin is the polyethyleneglycol block copolymer that average molecular weight is 12000, the water
Soluble lubricant agent is the polyethyleneglycol block copolymer that average molecular weight is 2800, and the hot-melt resin is that average molecular weight is
95000 polyethylene oxide.The aluminium surface resin toughness prepared using above-mentioned raw materials is relatively low, has certain brittleness, from
And in borehole cuttings, the discharge of break flour shape is presented in aluminium surface resin, is not in wrapping phenomenon, drilling efficiency is high.This is because
When the average molecular weight of the raw material of selection is excessive, material viscosity is larger, and final aluminium surface resin toughness obtained is too strong, to cause
Aluminium surface resin is easy the long filiform of presentation and is entangled in drill point root when PCB being made to drill, and hinders chip removal, causes broken needle rate higher.
Further, the water-soluble coating further includes 0.6 part of adhesion promoter.
Further, the adhesion promoter is silane coupling agent.Adhesion promoter, which has, improves aluminium surface resin
With the effect of substrate adhesive force, the binding force of aluminium surface resin and aluminium base obtained can be significantly improved.It is above-mentioned to choose the present invention
Adhesion promoter can make to form firm binding force between aluminium surface resin and aluminium base of the invention, to significantly improve
The performance of overlay film aluminium flake cover board obtained.
Further, the polyethyleneglycol block copolymer is polylactic acid.
Embodiment 2
A kind of Aluminum cover with water-soluble coating, which is characterized in that including Aluminum cover 1, and aluminium lid plate surface is set
Water-soluble coating 2.
Further, the water-soluble coating with a thickness of 40 μm.
Further, the water-soluble coating includes the component of following parts by weight: 35 parts of water-soluble resin, water solubility profit
16 parts of lubrication prescription, 21 parts of hot-melt resin.
Further, the water-soluble resin is the polyethyleneglycol block copolymer that average molecular weight is 7000, the water
Soluble lubricant agent is the polyethyleneglycol block copolymer that average molecular weight is 2000, and the hot-melt resin is that average molecular weight is
80000 polyethylene oxide.
Further, the water-soluble coating further includes 0.5 part of adhesion promoter.
Further, the adhesion promoter is titanate coupling agent.
Further, the polyethyleneglycol block copolymer is polylactide glycolate copolymer.
Embodiment 3
A kind of Aluminum cover with water-soluble coating, which is characterized in that including Aluminum cover 1, and aluminium lid plate surface is set
Water-soluble coating 2.
Further, the water-soluble coating with a thickness of 80 μm.
Further, the water-soluble coating includes the component of following parts by weight: 55 parts of water-soluble resin, water solubility profit
24 parts of lubrication prescription, 32 parts of hot-melt resin.
Further, the water-soluble resin is the polyethyleneglycol block copolymer that average molecular weight is 15000, the water
Soluble lubricant agent is the polyethyleneglycol block copolymer that average molecular weight is 4000, and the hot-melt resin is that average molecular weight is
100000 polyethylene oxide.
Further, the water-soluble coating further includes 0.7 part of adhesion promoter.
Further, the adhesion promoter is complexing compound coupling agent.
Further, the polyethyleneglycol block copolymer is polycaprolactone.
Embodiment 4
A kind of Aluminum cover with water-soluble coating, which is characterized in that including Aluminum cover 1, and aluminium lid plate surface is set
Water-soluble coating 2.
Further, the water-soluble coating with a thickness of 20 μm.
Further, the water-soluble coating includes the component of following parts by weight: 30 parts of water-soluble resin, water solubility profit
10 parts of lubrication prescription, 10 parts of hot-melt resin.
Further, the water-soluble resin is the polyethyleneglycol block copolymer that average molecular weight is 5000, the water
Soluble lubricant agent is the polyethyleneglycol block copolymer that average molecular weight is 1000, and the hot-melt resin is that average molecular weight is
50000 polyethylene oxide.
Further, the water-soluble coating further includes 0.4 part of adhesion promoter.
Further, the adhesion promoter is titanate coupling agent.
Further, the polyethyleneglycol block copolymer is polytrimethylene carbonate.
Embodiment 5
A kind of Aluminum cover with water-soluble coating, which is characterized in that including Aluminum cover 1, and aluminium lid plate surface is set
Water-soluble coating 2.
Further, the water-soluble coating with a thickness of 120 μm.
Further, the water-soluble coating includes the component of following parts by weight: 60 parts of water-soluble resin, water solubility profit
30 parts of lubrication prescription, -40 parts of hot-melt resin.
Further, the water-soluble resin is the polyethyleneglycol block copolymer that average molecular weight is 30000, the water
Soluble lubricant agent is the polyethyleneglycol block copolymer that average molecular weight is 5000, and the hot-melt resin is that average molecular weight is
120000 polyethylene oxide.
Further, the water-soluble coating further includes 0.8 part of adhesion promoter.
Further, the adhesion promoter is silane coupling agent.
Further, the polyethyleneglycol block copolymer is polyethylene glycol.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.It is noted that the technical characteristic being not described in detail in the present invention, it can be by appointing
One prior art is realized.
Claims (7)
1. a kind of Aluminum cover with water-soluble coating, which is characterized in that including Aluminum cover, and aluminium lid plate surface is arranged in
Water-soluble coating.
2. the Aluminum cover according to claim 1 with water-soluble coating, which is characterized in that the thickness of the water-soluble coating
Degree is 20-120 μm.
3. the Aluminum cover according to claim 1 with water-soluble coating, which is characterized in that the water-soluble coating includes
The component of following parts by weight: 30-60 parts of water-soluble resin, 10-30 parts of soluble oil, 10-40 parts of hot-melt resin.
4. the Aluminum cover according to claim 3 with water-soluble coating, which is characterized in that the water-soluble resin is flat
Average molecular weight is the polyethyleneglycol block copolymer of 5000-30000, and the soluble oil is that average molecular weight is 1000-
5000 polyethyleneglycol block copolymer, the hot-melt resin are the polycyclic oxygen second that average molecular weight is 50000-120000
Alkane.
5. the Aluminum cover according to claim 4 with water-soluble coating, which is characterized in that the water-soluble resin is flat
Average molecular weight is the polyethyleneglycol block copolymer of 7000-15000, and the soluble oil is that average molecular weight is 2000-
4000 polyethyleneglycol block copolymer, the hot-melt resin are the polycyclic oxygen second that average molecular weight is 80000-100000
Alkane.
6. the Aluminum cover according to claim 3 with water-soluble coating, which is characterized in that the water-soluble coating also wraps
Include 0.4-0.8 parts of adhesion promoters.
7. the Aluminum cover according to claim 6 with water-soluble coating, which is characterized in that the adhesion promoter is
One of silane coupling agent, titanate coupling agent, complexing compound coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910033460.7A CN109913105A (en) | 2019-01-14 | 2019-01-14 | A kind of Aluminum cover with water-soluble coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910033460.7A CN109913105A (en) | 2019-01-14 | 2019-01-14 | A kind of Aluminum cover with water-soluble coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109913105A true CN109913105A (en) | 2019-06-21 |
Family
ID=66960243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910033460.7A Pending CN109913105A (en) | 2019-01-14 | 2019-01-14 | A kind of Aluminum cover with water-soluble coating |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081389A (en) * | 2006-05-30 | 2007-12-05 | 三菱瓦斯化学株式会社 | Process for the production of entry sheet for drilling and use thereof |
| CN102458783A (en) * | 2009-06-01 | 2012-05-16 | 三菱瓦斯化学株式会社 | Drilling entry sheet |
| CN103937387A (en) * | 2014-04-22 | 2014-07-23 | 深圳市柳鑫实业有限公司 | Laminated aluminium-base cover board for PCB drilling and preparation method of cover board |
| CN104629597A (en) * | 2015-01-30 | 2015-05-20 | 烟台柳鑫新材料科技有限公司 | Coated aluminum sheet cover plate for PCB drilling and manufacturing method thereof |
| CN107523159A (en) * | 2017-09-18 | 2017-12-29 | 乐凯特科技铜陵有限公司 | A kind of high-precision pcb cover plate for drilling hole |
| CN108395832A (en) * | 2018-01-19 | 2018-08-14 | 昆山久文电子材料有限公司 | Overlay film aluminium sheet aqueous polyurethane coating and preparation method thereof |
-
2019
- 2019-01-14 CN CN201910033460.7A patent/CN109913105A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081389A (en) * | 2006-05-30 | 2007-12-05 | 三菱瓦斯化学株式会社 | Process for the production of entry sheet for drilling and use thereof |
| CN102458783A (en) * | 2009-06-01 | 2012-05-16 | 三菱瓦斯化学株式会社 | Drilling entry sheet |
| CN103937387A (en) * | 2014-04-22 | 2014-07-23 | 深圳市柳鑫实业有限公司 | Laminated aluminium-base cover board for PCB drilling and preparation method of cover board |
| CN104629597A (en) * | 2015-01-30 | 2015-05-20 | 烟台柳鑫新材料科技有限公司 | Coated aluminum sheet cover plate for PCB drilling and manufacturing method thereof |
| CN107523159A (en) * | 2017-09-18 | 2017-12-29 | 乐凯特科技铜陵有限公司 | A kind of high-precision pcb cover plate for drilling hole |
| CN108395832A (en) * | 2018-01-19 | 2018-08-14 | 昆山久文电子材料有限公司 | Overlay film aluminium sheet aqueous polyurethane coating and preparation method thereof |
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Application publication date: 20190621 |
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| RJ01 | Rejection of invention patent application after publication |