CN203093245U - Prepreg manufacturing device - Google Patents
Prepreg manufacturing device Download PDFInfo
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- CN203093245U CN203093245U CN 201320077081 CN201320077081U CN203093245U CN 203093245 U CN203093245 U CN 203093245U CN 201320077081 CN201320077081 CN 201320077081 CN 201320077081 U CN201320077081 U CN 201320077081U CN 203093245 U CN203093245 U CN 203093245U
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- prepreg
- glue spreader
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- glass cloth
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Abstract
The utility model discloses a prepreg manufacturing device which comprises a glass fabric uncoiling unit, a gum dipping unit, a metering unit, at least two coating units, an oven and a prepreg rolling unit, wherein the coating unit comprises a connecting pipeline, a flow control valve and a coating roller; glue flow holes communicated with the connecting pipeline are formed in the coating roller; and the coating units are respectively distributed on the edges of two sides of a glass fabric. According to the prepreg manufacturing device, the coating units are added, and the resin content on the edge of a prepreg increases, so that the thickness reduction on the edge of a plate caused by glue flow is remedied and canceled, the phenomenon that the thickness is non-uniform in a laminating process because of glue flow is alleviated, and furthermore, the thickness control precision of the copper-clad plate is improved.
Description
Technical field
The utility model relates to a kind of manufacturing installation of prepreg, belongs to the printed circuit board industry.
Background technology
Prepreg, claiming the PP sheet again, is one of main material during metal-clad laminate (claiming laminate again) is produced, and mainly adopts treated glass cloth, resin adhesive liquid on the dipping makes resin enter the B stage and the sheeting made through heat treatment (preliminary drying) again.
There are the following problems in the processing technology of traditional metal-clad laminate (claiming laminate again): resin adhesive liquid is flowed out by the panel edges zone in hot pressing, cause laminate after cutting off 10 ~ 30mm edges of boards gummosis zone, edge (being commonly called as the gummosis limit), still have problem thin in the plate, the thickness evenness difference in sheet material working region or the supply of material area all around.
For reaching the purpose of accurate control substrate insulating layer thickness evenness, the present main following several method that adopts: (1) changes the prescription of glue: add higher relatively resin prepolymer of molecular mass and the particulate inorganic filler component that can hinder gummosis in the glue prescription, to suppress the solation amount of prepreg in hot-forming metal-clad laminate process, obtain thickness evenness metal-clad laminate preferably thus.But the relatively large spatial volume of prepolymer of molecular mass own is relatively large, is difficult for soaking into the glass fiber fabric base material, strengthens thereby cause base material to soak into bad risk.And inorganic filler can significantly reduce the resin flow performance equally, reduce the wellability between resin and the glass cloth; Simultaneously, particulate inorganic filler can be aggravated the boring bit wear of PCB, deterioration hole wall quality.(2) change processing technology: by adjust prepreg control parameter according to as reduce Geltime, optimize lamination process for pressing such as low-pressure pressing, oblique line pressurization, slow temperature rise program etc., and constantly seek optimum Match between prepreg parameter and the laminating technology, guaranteeing under the prerequisite that metal-clad laminate base material quality meets the demands, reaching and suppress gummosis and improve the inhomogeneity purpose of sheet metal thickness.Yet, but in the lamination hot pressing, resin glue be by produce under the driving of heating, pressurization secondary flow and and glass between realize dipping once more, finish the exhaust calking, guarantee that with this resin fully soaks into glass yarn braid gap; And reduce fluid ability or reduce flowing time, may cause prepreg pressing windows narrow, significantly increase the quality risk that dried flower, white edge, Bai Jiao, microbubble grade visual defects appear in base material.(3) the special manufacturing process of design, for example: (a) SUNX adopted prepreg and Copper Foil staggered superimposed after, with the method on high heat resistant adhesive tape sealing lamination four limits, improve sheet metal thickness by flowing of resin glue of obstruction.The high heat resistant adhesive tape good airproof performance that this kind processing technology is used is unfavorable for the little molecule volatile matter escape that produces in the cross-linking reaction process.In case little molecule volatile matter residues in the insulating barrier resin matrix, can cause resin cavity blemish grade visual defects, to multinomial performance indexs such as dielectric properties, curing degree, wet-hot aging performance and the reliability generation harmful effect of base material.Simultaneously, each pressing lamination is adopted the sealing of high heat resistant adhesive tape, need to adopt operation manually, inefficiency and occur sequence of operations problems such as poorly sealed, that contraposition is inaccurate easily.Be unfavorable for big applying of producing.(b) Mitsubishi's gas adopts the edge thickness glass cloth thicker than interior thickness.But,, in the prepreg manufacture process during, easily cause everywhere unbalance stress and give a discount through each parallel roll shaft because edge thickness is than the interior thickness height.(c) GUANGDONG SHENGYI has adopted a kind of new metering roll, and referring to Chinese utility model CN202021901U, its edge diameter is littler than interior thickness, so can be so that the RC% content of prepreg marginal position improve, thus remedy the loss of gummosis in the pressing process.But the drawback of this kind technology is: 1) difficulty of processing of metering roll is big, and the cost height generally can reach 2,000,000 RMB; 2) in a single day metering roll is installed and generally can not changed, so the resin content of the raising prepreg marginal position that this kind technology can only be quantitative, does not possess controllability.
In sum, the thickness of insulating layer homogeneity question of prepreg is that those skilled in the art pay special attention to but fail the problem of fine solution always.
Summary of the invention
The purpose of this utility model provides a kind of manufacturing installation of prepreg.
To achieve the above object of the invention, the technical solution adopted in the utility model is: a kind of manufacturing installation of prepreg comprises the glass cloth unwinder unit, impregnation unit, metering units, coating unit, baking oven and the prepreg rolling unit that connect successively;
Described coating unit comprises connecting pipe, flow control valve and glue spreader, and described glue spreader is provided with the rubber flow holes that is communicated with connecting pipe;
Described coating unit has 2 at least, is distributed in the position, both sides of the edge of glass cloth separately.
Above, described glass cloth unwinder unit, impregnation unit, metering units, baking oven and prepreg rolling unit all are to be prior art, are the common equipment unit of preparation prepreg.Between each unit with delivery roll or directly connect.
Described coating unit is located between metering units and the baking oven, for glue spreader, then is the top of being located at the metering roll two ends of metering units, in the middle of baking oven and the metering roll.
Described coating unit has 2 at least, be distributed in the position, both sides of the edge of glass cloth separately, the position that is meant coating unit institute gluing is 3 ~ 20 cm places from the prepreg two ends, it is the marginal position that glue spreader is installed in prepreg, and just contact prepreg, the position, both sides of the edge here is clearly for a person skilled in the art.
Described flow control valve can be controlled the amount of the glue that flows to the prepreg surface, thereby reaches the purpose of control resin content.
Optimized technical scheme, described coating unit comprises a pair of glue spreader, and is symmetrically set in the positive two sides of glass cloth, and glass cloth is located between the described glue spreader.
In the technique scheme, the length of described glue spreader is 3 ~ 20 cm.
In the technique scheme, described glue spreader is stainless steel glue spreader or ceramic glue spreader.
In the technique scheme, the aperture of described rubber flow holes is 0.1 ~ 10 mm.
Working mechanism of the present utility model is: when prepreg during through the metering roll of metering units folder axle, horizontal direction resin content everywhere can be thought homogeneous; When the glue spreader above its process metering roll, marginal position can be because of there being the glue on the glue spreader to apply up, so the resin content of marginal position can be higher than other positions; In the pressing process, the resin content height of marginal position, but just partial offset or remedy the thickness that this zone causes because of gummosis and reduce, thus improve the thickness homogeneity of sheet material.
Because the technique scheme utilization, the advantage that the utility model compared with prior art has is:
1, the utility model design has obtained a kind of manufacturing installation of prepreg, increased coating unit, by improving the resin content of prepreg marginal position, remedying, offset the sheet edge position reduces because of the thickness that gummosis causes, improve the uneven thickness phenomenon that causes because of " gummosis " in the pressing process, thereby improved the thickness control accuracy of copper-clad plate.
2, of the present utility model simple in structure, to be convenient to promote, the cost demand is low.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the structural representation of coating unit among the utility model embodiment one;
Fig. 3 is the structural representation of coating unit installation site among the utility model embodiment one.
Wherein: 1, glass cloth unwinder unit; 2, impregnation unit; 3, metering units; 4, coating unit; 5, baking oven; 6, prepreg rolling unit; 7, connecting pipe; 8, glue spreader; 9, flow control valve; 10, metering roll; 11, prepreg.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one
Shown in accompanying drawing 1 ~ 3, a kind of manufacturing installation of prepreg comprises the glass cloth unwinder unit 1, impregnation unit 2, metering units 3, coating unit 4, baking oven 5 and the prepreg rolling unit 6 that connect successively;
Described coating unit comprises connecting pipe 7, flow control valve 9 and glue spreader 8, and described glue spreader is provided with the rubber flow holes that is communicated with connecting pipe;
Described coating unit has 2 at least, is distributed in the position, both sides of the edge of prepreg 11 separately.
Flow control valve can be controlled the amount of the glue that flows to the prepreg surface, thereby reaches the purpose of control resin content.
Can take screw thread or welding manner to be connected between connecting pipe and the glue spreader.
Described coating unit comprises a pair of glue spreader, and is symmetrically set in the positive two sides of prepreg, and prepreg is located between the described glue spreader.
The length of described glue spreader is 3 ~ 20 cm.Glue spreader is installed in the marginal position of prepreg, and just contacts prepreg; Glue spreader is positioned at metering roll 10 tops, and prepreg enters before the baking oven 5.
Described glue spreader adopts ceramic glue spreader.
The aperture of described rubber flow holes is 0.1 ~ 10 mm.Described rubber flow holes is preferably a plurality of, and is provided with along its length.
Adopt the disclosed glue spreading apparatus of the utility model, can improve the uneven thickness phenomenon that causes because of " gummosis " because of in the copper-clad plate pressing process well, improved the thickness of copper-clad plate control accuracy.
Claims (5)
1. the manufacturing installation of a prepreg is characterized in that: comprise the glass cloth unwinder unit (1), impregnation unit (2), metering units (3), coating unit (4), baking oven (5) and the prepreg rolling unit (6) that connect successively;
Described coating unit comprises connecting pipe (7), flow control valve (9) and glue spreader (8), and described glue spreader is provided with the rubber flow holes that is communicated with connecting pipe;
Described coating unit has 2 at least, is distributed in the position, both sides of the edge of glass cloth separately.
2. the manufacturing installation of prepreg according to claim 1, it is characterized in that: described coating unit comprises a pair of glue spreader, and is symmetrically set in the positive two sides of glass cloth, and glass cloth is located between the described glue spreader.
3. the manufacturing installation of prepreg according to claim 1, it is characterized in that: the length of described glue spreader is 3 ~ 20 cm.
4. the manufacturing installation of prepreg according to claim 1, it is characterized in that: described glue spreader is stainless steel glue spreader or ceramic glue spreader.
5. the manufacturing installation of prepreg according to claim 1, it is characterized in that: the aperture of described rubber flow holes is 0.1 ~ 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320077081 CN203093245U (en) | 2013-02-19 | 2013-02-19 | Prepreg manufacturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320077081 CN203093245U (en) | 2013-02-19 | 2013-02-19 | Prepreg manufacturing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203093245U true CN203093245U (en) | 2013-07-31 |
Family
ID=48844680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320077081 Expired - Lifetime CN203093245U (en) | 2013-02-19 | 2013-02-19 | Prepreg manufacturing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203093245U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275271A (en) * | 2014-09-16 | 2015-01-14 | 东莞联茂电子科技有限公司 | Device for improving impregnation property of prepreg |
| CN109651636A (en) * | 2018-12-24 | 2019-04-19 | 王新民 | A kind of preparation method of prepreg |
| CN110561286A (en) * | 2019-09-06 | 2019-12-13 | 广东小太阳砂磨材料有限公司 | Cloth treatment process for abrasive cloth |
-
2013
- 2013-02-19 CN CN 201320077081 patent/CN203093245U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275271A (en) * | 2014-09-16 | 2015-01-14 | 东莞联茂电子科技有限公司 | Device for improving impregnation property of prepreg |
| CN104275271B (en) * | 2014-09-16 | 2017-02-08 | 东莞联茂电子科技有限公司 | Device for improving impregnation property of prepreg |
| CN109651636A (en) * | 2018-12-24 | 2019-04-19 | 王新民 | A kind of preparation method of prepreg |
| CN110561286A (en) * | 2019-09-06 | 2019-12-13 | 广东小太阳砂磨材料有限公司 | Cloth treatment process for abrasive cloth |
| CN110561286B (en) * | 2019-09-06 | 2021-05-04 | 广东小太阳砂磨材料有限公司 | Cloth treatment process for abrasive cloth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
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| CX01 | Expiry of patent term |