CN101532229A - Process for flattening post treatment of electronic grade glass fiber cloth - Google Patents
Process for flattening post treatment of electronic grade glass fiber cloth Download PDFInfo
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- CN101532229A CN101532229A CN200910037810A CN200910037810A CN101532229A CN 101532229 A CN101532229 A CN 101532229A CN 200910037810 A CN200910037810 A CN 200910037810A CN 200910037810 A CN200910037810 A CN 200910037810A CN 101532229 A CN101532229 A CN 101532229A
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- glass fiber
- destarch
- fiber cloth
- flattening
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Abstract
The invention discloses a process for flattening post treatment of electronic grade glass fiber cloth, and aims to provide a process for flattening post treatment of the electronic grade glass fiber cloth which has good resin impregnation property, good water resistance, good surface slickness and low air permeability. The process comprises the following steps: obtaining an un-desized glass fiber cloth after being woven by a jet loom, washing and soaking the cloth by a water washing device of which the water temperature is between 50 and 90 DEG C, performing flattening processing and shaping on the cloth by a cooling impression roller of which the pressure is between 10 and 70 kg/cm<2> and the cooling water temperature is between 5 and 25 DEG C, coiling the un-desized glass fiber cloth after the flattening processing and shaping by an iron core and performing heat desizing treatment by a heat desizing furnace directly to obtain flattened glass fiber cloth of which the organic residue quantity is less than 0.04 percent, and performing coupling agent dipping treatment by a vertical surface processing machine set to obtain the flattened electronic grade glass fiber cloth. The process can be widely applied in the field of the electronic grade glass fiber cloth.
Description
Technical field
The present invention relates to a kind of process for flattening post treatment of electronic grade glass fiber cloth.
Background technology
In the printed wiring board of electronic equipments such as electronic-grade glass fiber cloth is widely used in communicating by letter, communications and transportation, medical treatment, electronic-grade glass fiber cloth is one of two big main materials of copper-clad plate (PCB).
Because the restriction of factors such as glass fiber yarn and glass fabric manufacturing technique, glass fabric is weaved cotton cloth by warp thread, weft yarn and is formed, warp thread, weft yarn are generally formed as the collecting agent boundling through organic matters such as starch by the monofilament of up to a hundred to hundreds of diameter numbers micron, because of weaving the needs of processing etc., the precursor that this boundling forms also will be through yarn-twisting machine twisting, and the warp thread, the weft yarn that therefore constitute glass fabric generally are cylindrical or elliptical cylinder-shapes.Finish and weave the glass fabric that processing obtains not destarch, owing to there are not organic matters such as starch on the glass fabric of destarch, influence combining of glass fibre and resin, can not directly sell to downstream user production copper-clad plate and use, need carry out post processing to the glass fabric of not destarch, organic matter on the glass fabric of not destarch is removed through thermal decomposition, on glass fabric, flood again with coupling agent, just obtain finished product, the purpose of dipping coupling agent is that glass fabric and resin-bonded are got better.
Glass fabric is made copper-clad plate, generally be that glass fabric contains epoxy resin dipping earlier, be made into prepreg, make laminated plates with individual or several semi-solid preparation lamination heating and pressurizing then, laminated plates is the printed wiring board that is processed to form various electronic components by distribution etc.The characteristic that laminated plates requires: 1, water absorption resistance, heat resistance; 2, surface smoothing; 3, the homogeneity of internal resin and glass fibre distribution (being convenient to boring processing, particularly micro hole).
Development along with technology, electronic devices and components more and more develop to weak point, little, light, thin direction and direction multi-functional, high reliability, this except require electron glass fiber cloth more and more thinner, to the impregnation of electron glass fiber cloth resin, press down water-based, surface smoothness, air permeability and also have higher requirement.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of have good resin impregnation, good water-based, surface smoothness is good, air permeability the is low process for flattening post treatment of electronic grade glass fiber cloth of pressing down are provided.
The technical solution adopted in the present invention is: the present invention includes following steps:
(a) after weaving cotton cloth, air-jet loom obtains the glass fabric of not destarch;
(b) be that 50～90 ℃ water washing device is washed immersion with the glass fabric of described not destarch through water temperature;
(c) glass fabric that will wash the described not destarch of soaking is 10～75kg/cm through pressure again
2, cooling water temperature is that 5～25 ℃ of cooling pressurization pressure rollers carry out flattening processing typing;
(d) glass fabric of the described not destarch after the flattening processing is directly used
250mm～
The iron core of 380mm batches;
The glass fabric of the described not destarch of (e) again iron core being batched directly carries out hot destarch through hot destarch stove to be handled, and obtains the organic substance residues amount less than 0.04% flattening glass fabric;
(f) carry out the impregnation process of coupling agent again through vertical surface treatment unit, obtain the flattening electronic-grade glass fiber cloth.
Further, water temperature is 70～85 ℃ in the described step (b).
Further, pressure is 60～70kg/cm in the described step (c)
2
The invention has the beneficial effects as follows:, be 10～75kg/cm through pressure again the glass fabric of washing the described not destarch of soaking because the glass fabric that the present invention will described not destarch is that 50～90 ℃ water washing device is washed immersion through water temperature
2Cooling water temperature is that 5-25 ℃ of cooling pressurization pressure roller carries out flattening processing typing, glass fabric is by warp thread, weft yarn is weaved cotton cloth and is formed, warp thread, weft yarn is attached with starch, polyvinyl alcohol organic matters such as (PVA), utilize the principle of organic matter chance water meeting swellings such as starch, so can make the warp thread of glass fabric, it is flat that weft yarn becomes, make warp thread on the glass fabric, gap turn narrow between the weft yarn, make the glass fabric concave-convex surface reduce, so the electronic-grade glass fiber cloth after the present invention's processing have good resin impregnation, the good water-based that presses down, surface smoothness is good, air permeability is low.
The laminated plates of using electronic-grade glass fiber cloth of the present invention to make, the water absorption resistance of this laminated plates, heat resistance and surface smoothing all improve, thereby improve the processing characteristics of laminated plates.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Embodiment one:
7628 grey cloths of producing with our company (the not glass fabric of destarch) use the present invention to handle to obtain data and see Table 1.
Process for flattening post treatment of electronic grade glass fiber cloth, after weaving cotton cloth, air-jet loom obtains the glass fabric of not destarch, is that 50 ℃ water washing device is washed immersion with the glass fabric of described not destarch through water temperature, be provided with the cylinder of built-in chrysanthemum shape core pattern high-speed rotating shaft in the described water washing device, described cylinder percent opening about 50%, the chrysanthemum shape of the built-in high speed rotation of described cylinder is changeed core, the high speed rotation that this chrysanthemum shape is changeed core makes hot water constantly impact the glass fabric of not destarch, the warp thread on the glass fabric of destarch not, the easier expansion of weft yarn is loose, is 10kg/cm through pressure again with the glass fabric of washing the described not destarch of soaking
2, cooling water temperature is that 5 ℃ of cooling pressurization pressure rollers carry out flattening processing typing, pressure is set by steam-cylinder piston control, directly uses through the glass fabric of the described not destarch that above-mentioned high temperature soaks, pressurization is flattened
The iron core of 250mm batches, needn't be through super-dry, owing to flatten through high pressure, its moisture has only 5%, will again
The glass fabric of the described not destarch that the iron core of 250mm batches directly carries out hot destarch through hot destarch stove to be handled, obtain the organic substance residues amount less than 0.04% flattening glass fabric, the baking temperature of described hot destarch stove is set to 400 ℃, after complete destarch, carry out the impregnation process of coupling agent again through vertical surface treatment unit, obtain the flattening electronic-grade glass fiber cloth.
Embodiment two:
2116 grey cloths of producing with our company (the not glass fabric of destarch) use the present invention to handle to obtain data and see Table 1.
Process for flattening post treatment of electronic grade glass fiber cloth, after weaving cotton cloth, air-jet loom obtains the glass fabric of not destarch, is that 90 ℃ water washing device is washed immersion with the glass fabric of described not destarch through water temperature, be provided with the cylinder of built-in chrysanthemum shape core pattern high-speed rotating shaft in the described water washing device, described cylinder percent opening about 50%, the chrysanthemum shape of the built-in high speed rotation of described cylinder is changeed core, the high speed rotation that this chrysanthemum shape is changeed core makes hot water constantly impact the glass fabric of not destarch, the warp thread on the glass fabric of destarch not, the easier expansion of weft yarn is loose, is 75kg/cm through pressure again with the glass fabric of washing the described not destarch of soaking
2, cooling water temperature is that 25 ℃ of cooling pressurization pressure rollers carry out flattening processing typing, pressure is set by steam-cylinder piston control, directly uses through the glass fabric of the described not destarch that above-mentioned high temperature soaks, pressurization is flattened
The iron core of 380mm batches, needn't be through super-dry, owing to flatten through high pressure, its moisture has only 5%, will again
The glass fabric of the described not destarch that the iron core of 380mm batches directly carries out hot destarch through hot destarch stove to be handled, obtain the organic substance residues amount less than 0.04% flattening glass fabric, the baking temperature of described hot destarch stove is set to 390 ℃, after complete destarch, carry out the impregnation process of coupling agent again through vertical surface treatment unit, obtain the flattening electronic-grade glass fiber cloth.
Embodiment three:
106 grey cloths of producing with our company (the not glass fabric of destarch) use the present invention to handle to obtain data and see Table 1.
Process for flattening post treatment of electronic grade glass fiber cloth, after weaving cotton cloth, air-jet loom obtains the glass fabric of not destarch, is that 70 ℃ water washing device is washed immersion with the glass fabric of described not destarch through water temperature, be provided with the cylinder of built-in chrysanthemum shape core pattern high-speed rotating shaft in the described water washing device, described cylinder percent opening about 50%, the chrysanthemum shape of the built-in high speed rotation of described cylinder is changeed core, the high speed rotation that this chrysanthemum shape is changeed core makes hot water constantly impact the glass fabric of not destarch, the warp thread on the glass fabric of destarch not, the easier expansion of weft yarn is loose, is 50kg/cm through pressure again with the glass fabric of washing the described not destarch of soaking
2, cooling water temperature is that 15 ℃ of cooling pressurization pressure rollers carry out flattening processing typing, pressure is set by steam-cylinder piston control, directly uses through the glass fabric of the described not destarch that above-mentioned high temperature soaks, pressurization is flattened
The iron core of 300mm batches, needn't be through super-dry, owing to flatten through high pressure, its moisture has only 5%, will again
The glass fabric of the described not destarch that the iron core of 300mm batches directly carries out hot destarch through hot destarch stove to be handled, obtain the organic substance residues amount less than 0.04% flattening glass fabric, the baking temperature of described hot destarch stove is set to 380 ℃, after complete destarch, carry out the impregnation process of coupling agent again through vertical surface treatment unit, obtain the flattening electronic-grade glass fiber cloth.
Comparative example one:
By normal aftertreatment technology, 7628 grey cloths that use our company to produce equally carry out the finished product that process of surface treatment production obtains and estimate.
After weaving cotton cloth, air-jet loom obtains the glass fabric of not destarch, directly the hot destarch stove through about 390 ℃ pre-destarch and 400 ℃ carries out hot destarch, in the impregnation process of carrying out coupling agent through the surface treatment unit, obtain the electronic-grade glass fiber cloth that is used to estimate after the drying after the complete destarch.Evaluation result sees Table 1.
Comparative example two:
By normal aftertreatment technology, 2116 grey cloths that use our company to produce equally carry out the finished product that process of surface treatment production obtains and estimate.
After air-jet loom is weaved cotton cloth, obtain the glass fabric of not destarch, directly carry out hot destarch, in the impregnation process of carrying out coupling agent through the surface treatment unit, obtain the electronic-grade glass fiber cloth that is used to estimate after the drying after the complete destarch through about 390 ℃ hot destarch stove.Evaluation result sees Table 1.
Comparative example three:
By normal aftertreatment technology, 106 grey cloths that use our company to produce equally carry out the finished product that process of surface treatment production obtains and estimate.
After air-jet loom is weaved cotton cloth, obtain the glass fabric of not destarch, directly carry out hot destarch, in the impregnation process of carrying out coupling agent through the surface treatment unit, obtain the electronic-grade glass fiber cloth that is used to estimate after the drying after the complete destarch through about 380 ℃ hot destarch stove.Evaluation result sees Table 1.
Table 1
More than explanation, the electronic-grade glass fiber cloth that obtains through the present invention have good resin impregnation, good press down water-based, surface smoothness is good, air permeability is low.
The present invention can be widely used in the manufacturing field of electronic-grade glass fiber cloth.
Claims (3)
1, a kind of process for flattening post treatment of electronic grade glass fiber cloth, it is characterized in that: it may further comprise the steps:
(a) after weaving cotton cloth, air-jet loom obtains the glass fabric of not destarch;
(b) be that 50～90 ℃ water washing device is washed immersion with the glass fabric of described not destarch through water temperature;
(c) glass fabric that will wash the described not destarch of soaking is 10～75kg/cm through pressure again
2, cooling water temperature is that 5～25 ℃ of cooling pressurization pressure rollers carry out flattening processing typing;
(d) glass fabric of the described not destarch after the flattening processing is directly used
250mm～
The iron core of 380mm batches;
The glass fabric of the described not destarch of (e) again iron core being batched directly carries out hot destarch through hot destarch stove to be handled, and obtains the organic substance residues amount less than 0.04% flattening glass fabric;
(f) carry out the impregnation process of coupling agent again through vertical surface treatment unit, obtain the flattening electronic-grade glass fiber cloth.
2, process for flattening post treatment of electronic grade glass fiber cloth according to claim 1 is characterized in that: water temperature is 70～85 ℃ in the described step (b).
3, process for flattening post treatment of electronic grade glass fiber cloth according to claim 1 is characterized in that: pressure is 60～70kg/cm in the described step (c)
2
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| CN2009100378103A CN101532229B (en) | 2009-03-12 | 2009-03-12 | Process for flattening post treatment of electronic grade glass fiber cloth |
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| CN2009100378103A CN101532229B (en) | 2009-03-12 | 2009-03-12 | Process for flattening post treatment of electronic grade glass fiber cloth |
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| CN101532229B CN101532229B (en) | 2011-12-07 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871149A (en) * | 2010-06-04 | 2010-10-27 | 上海宏和电子材料有限公司 | Fiber opening method for electronic grade glass fiber cloth and electronic grade glass fiber cloth obtained by using same |
| CN102877242A (en) * | 2012-09-04 | 2013-01-16 | 建滔（清远）玻璃纤维有限公司 | Production method of low air-permeability electronic-grade glass fiber cloth |
| CN103046274A (en) * | 2012-12-26 | 2013-04-17 | 湖北金马玻璃纤维有限公司 | Postprocessing technology and postprocessing system for moisture-containing electronic fiberglass cloth |
| CN103163012A (en) * | 2011-12-13 | 2013-06-19 | 郭永健 | Microwave digestion tank |
| WO2013149400A1 (en) * | 2012-04-06 | 2013-10-10 | 上海宏和电子材料有限公司 | Treatment process for flattening electronic-grade glass fiber cloth and electronic-grade glass fiber cloth produced by using same |
| CN104878504A (en) * | 2015-05-28 | 2015-09-02 | 安徽丹凤集团桐城玻璃纤维有限公司 | Production process of long-life electronic-grade fiberglass cloth |
| CN113818172A (en) * | 2021-09-26 | 2021-12-21 | 泰山玻璃纤维邹城有限公司 | Desizing method of low-expansion-coefficient glass fiber cloth |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2870938B2 (en) * | 1990-02-28 | 1999-03-17 | 日東紡績株式会社 | Glass cloth for printed circuit boards |
| JP2643060B2 (en) * | 1992-07-07 | 1997-08-20 | 新神戸電機株式会社 | Glass fiber for laminate and method for producing laminate |
| US6543258B1 (en) * | 1997-12-02 | 2003-04-08 | Nitto Boseki Co., Ltd. | Glass fiber nonwoven fabric and printed wiring board |
| JP3974797B2 (en) * | 2002-02-28 | 2007-09-12 | 日東紡績株式会社 | Glass cloth manufacturing method and glass cloth |
| CN1321239C (en) * | 2005-08-23 | 2007-06-13 | 四川玻纤有限责任公司 | Post-treatment process for electronic-grade fiberglass cloth |
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2009
- 2009-03-12 CN CN2009100378103A patent/CN101532229B/en active Active
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| CN101871149A (en) * | 2010-06-04 | 2010-10-27 | 上海宏和电子材料有限公司 | Fiber opening method for electronic grade glass fiber cloth and electronic grade glass fiber cloth obtained by using same |
| CN103163012A (en) * | 2011-12-13 | 2013-06-19 | 郭永健 | Microwave digestion tank |
| WO2013149400A1 (en) * | 2012-04-06 | 2013-10-10 | 上海宏和电子材料有限公司 | Treatment process for flattening electronic-grade glass fiber cloth and electronic-grade glass fiber cloth produced by using same |
| CN104246049A (en) * | 2012-04-06 | 2014-12-24 | 上海宏和电子材料有限公司 | Treatment process for flattening electronic-grade glass fiber cloth and electronic-grade glass fiber cloth produced by using same |
| CN104246049B (en) * | 2012-04-06 | 2016-02-24 | 上海宏和电子材料有限公司 | The electronic-grade glass fiber cloth of electronic-grade glass fiber cloth flaky process technique and production thereof |
| CN102877242A (en) * | 2012-09-04 | 2013-01-16 | 建滔（清远）玻璃纤维有限公司 | Production method of low air-permeability electronic-grade glass fiber cloth |
| CN102877242B (en) * | 2012-09-04 | 2014-06-18 | 建滔（清远）玻璃纤维有限公司 | Production method of low air-permeability electronic-grade glass fiber cloth |
| CN103046274A (en) * | 2012-12-26 | 2013-04-17 | 湖北金马玻璃纤维有限公司 | Postprocessing technology and postprocessing system for moisture-containing electronic fiberglass cloth |
| CN104878504A (en) * | 2015-05-28 | 2015-09-02 | 安徽丹凤集团桐城玻璃纤维有限公司 | Production process of long-life electronic-grade fiberglass cloth |
| CN113818172A (en) * | 2021-09-26 | 2021-12-21 | 泰山玻璃纤维邹城有限公司 | Desizing method of low-expansion-coefficient glass fiber cloth |
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| CN101532229B (en) | 2011-12-07 |
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Address after: Seven road 519000 Guangdong city of Zhuhai province Gaolan Gaolan Economic Zone North No. 25 Patentee after: ZHUHAI ZHUBO ELECTRONIC MATERIAL CO., LTD. Address before: 519020 No. 10, Bai Shi Road, Zhuhai, Guangdong, Gongbei Patentee before: Zhuhai Fuhua Composites Co., Ltd. |