CN1104275A - Method for production of hot-pressed makeready overlay paper for producing electronic industry hot-pressed veneer sheet - Google Patents
Method for production of hot-pressed makeready overlay paper for producing electronic industry hot-pressed veneer sheet Download PDFInfo
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- CN1104275A CN1104275A CN 93121358 CN93121358A CN1104275A CN 1104275 A CN1104275 A CN 1104275A CN 93121358 CN93121358 CN 93121358 CN 93121358 A CN93121358 A CN 93121358A CN 1104275 A CN1104275 A CN 1104275A
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Abstract
The present invention provides a method for making hot-pressure base plate paper used in the course of making hot-pressed laminated board in electronic industry. It uses a domestic or imported natural colour softwood pulp and non-bleached wheat straw pulp as raw materials to mix and the mixing ratio of both pulps is 50%-90% of softwood pulp and 10%-50% of non-bleached wheat straw pulp. In the invented making process the beating degree of softwood pulp is 10-30 deg.SR, wet weight is 3-10g; and the beating degree of non-bleached wheat straw pulp is 20-40 deg.SR, wet weight is 1.5-3g. Said invention rationally develops the utilizations of wheat straw- a straw source, and its making cost is low, and product properties are good.
Description
The invention belongs to the method for manufacturing technology of one type of paper in the paper industry.
Be used for various types of hot pressing laminated boards such as copper coated foil plate that the electronics industry printed circuit board (PCB) makes and insulation board, in its hot pressing manufacture process, need a kind of hot pressing tympan paper, to guarantee the normal manufacturing and the product quality of laminated board.Therefore, tympan paper there is the special performances requirement.There is WESTVACO company and Japanese Ba Chuan system paper Co., Ltd. of the U.S. in the at present external producer that produces hot pressing tympan paper, and domestic still do not have a manufacturer.The hot pressing tympan paper that external each manufacturer produces is that raw material is joined to copy and made with true qualities hardwood pulp and true qualities softwood pulp mainly, product quantitatively at 160-260g/m
2Between, tightness is at 600-700kg/m
3Between, air permeability is greater than 6.35 μ m/Pa.s.Whole dependence on import of the demand of domestic hot pressing tympan paper in the past, the back is higher because of import cost, needs a large amount of foreign exchanges of cost, and therefore most of hot pressing laminated board manufacturing firm just replaces hot pressing tympan paper with the varnished insulation body paper.But substitute and have following problem in the process:
1, can not guarantee to make the quality of laminated board, often cause the damage or the degradation of laminated board;
2, influence the processing technology of laminated board, make it complicated;
3, access times are few, the cost height.
The objective of the invention is to seek a kind of raw material cheap and easy to get and corresponding manufacturing technique produces the hot pressing tympan paper that every physical and chemical index reaches external like product standard at national conditions and resource situation.
The present invention realizes like this.
1) raw material: adopt homemade or import true qualities softwood pulp is that raw material is joined and copied with not floating Straw Pulp, wet end furnish is softwood pulp 50%-90%, does not float Straw Pulp 10%-50%.
2) technological process:
In above-mentioned technological process, owing to be to adopt the commodity slurry, so manufacturing technique is discongested making beating from wood pulp.Discongest and use hydrabrusher, making beating can be ground with disk, beater etc.Paper pulp after the making beating enters to purify after concentration is even and removes slag system through reserve pit, and cleaning system is preferably removed weight matter and lightweight two parts impurity in the slurry, to guarantee that paper is pure.Paper pulp after the purification is surfed the Net after sizing mixing, through squeezing, dry, batch, obtain finished product after the rewinding, packing.
The paper pulp connecting internet system needs to be grasped, to guarantee into paper uniformity and quantitatively stable consistent with cross direction ration.Squeeze pressure will be controlled proper, and is qualified to guarantee the page tightness.Squeeze pressure is decided on the Straw Pulp consumption, and when the Straw Pulp consumption was 10%-25%, the tightness of the product of manufacturing can be controlled in 600-700kg/m
3; When the Straw Pulp consumption was 25%-50%, the tightness of product can be controlled in 600-630kg/m
3Drying should be not overheated, and want evenly, and is smooth to guarantee page to greatest extent, goes out dry back page and need keep certain moisture, and moisture is excessive or too small all influential to the use of product.Also need dispose a cover water and basis weight display system before batching,, keep the stable of Substance and thickness so that in time adjust the starching amount.
3) major parameter of controlling in the technical process
Produce qualified hot pressing tympan paper, should control 5 points well: the 1. beating degree of softwood pulp and weight in wet base, the beating degree of softwood pulp is controlled to be 10-30 ° of SR, weight in wet base 3-10g among the present invention; The Straw Pulp beating degree is controlled to be 20-40 ° of SR, weight in wet base 1.5-3g.2. the proportioning of softwood pulp and Straw Pulp.3. Shi Yi chemical assistant.4. high in squeeze pressure and the suitable pressure roller.5. the uniformity of cardboard.
The making beating that the present invention determines, the machine hand parameter of planting is:
(1) making beating
Concentration: 3%-4%
Time: 10-60min
Specific beating pressure: control making beating electric current
(2) copy paper
Online concentration:＜0.3%
Squeezing back moisture:＜80%
Dry back moisture:＜10%
The speed of a motor vehicle:＜60min
1# drying cylinder vapour pressure:＜1.2kg/cm
2
Should note in the manufacture course of products following some: (1) slagging-off is clean; (2) starching is stable; (3) uniform drying; (4) batch smooth; (5) packing is neat, guarantees not collide, in order to avoid the surface appearance is uneven.
Embodiment:
According to above-mentioned method of manufacturing technology, produced hot pressing tympan paper.Table 1 is the hot pressing tympan paper product standard of Japanese Ba Chuan system paper Co., Ltd. and U.S. WESTVACO company.Table 2 is for every physical and chemical index test data of the hot pressing tympan paper that produces according to the present invention, and is qualified by the visible every physical and chemical index of product of table 2, conforms with instructions for use fully through factory is on probation.
Table 1
Table 2
I group data are quality of paper products supervision and inspection station, Shaanxi Province measurement result in the table.II group data are Xi'an Insulating Materials Plant's measurement result.Band * data are papermaking experimental determination result for Xibei College of Light Industry's Pulp and Paper Engineering in the II.
The manufacture method of hot pressing tympan paper of the present invention adapts to China's national situation on raw material is chosen, raw material sources are rich and easy to get, and especially having adopted wheat straw cheap and easy to get is the significance that raw material has more reality, for new road has been opened up in the development and use of straw resource.Production technology is easy to control and grasps, and is that general paper mill is accepted easily, and production cost is lower, environmentally safe.After testing with big and even, the smooth not cracky of product thickness that shows on probation, conduct heat, withstand voltage, permeability is good, can use repeatedly, satisfy user's instructions for use fully, quality has met or exceeded international like product level, product is qualified through quality of paper products supervision and inspection station, Shaanxi Province test verification, not only can substitute foreign paper and save foreign exchange for country, and make China's laminated board industry that the homemade dedicated paper that adapts to technological requirement arranged, thereby guaranteed product quality, saved raw material, and improved output and reduced cost.The present invention can produce remarkable social benefit and economic benefit.
Claims (3)
1, the manufacture method of used hot pressing tympan paper in the electronics industry hot pressing laminated board manufacture process, it is characterized in that adopting homemade or import true qualities softwood pulp is that raw material is joined and copied with not floating Straw Pulp, wet end furnish is softwood pulp 50%-90%, does not float Straw Pulp 10%-50%.
2, manufacture method according to claim 1 is characterized in that the softwood pulp beating degree is 10-30 ° of SR in the manufacturing technique, weight in wet base 3-10g.
3, manufacture method according to claim 1, it is characterized in that not floating in the manufacturing technique Straw Pulp beating degree is 20-40 ° of SR, weight in wet base 1.5-3g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93121358 CN1104275A (en) | 1993-12-25 | 1993-12-25 | Method for production of hot-pressed makeready overlay paper for producing electronic industry hot-pressed veneer sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93121358 CN1104275A (en) | 1993-12-25 | 1993-12-25 | Method for production of hot-pressed makeready overlay paper for producing electronic industry hot-pressed veneer sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1104275A true CN1104275A (en) | 1995-06-28 |
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ID=4993678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93121358 Pending CN1104275A (en) | 1993-12-25 | 1993-12-25 | Method for production of hot-pressed makeready overlay paper for producing electronic industry hot-pressed veneer sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1104275A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427680C (en) * | 2006-04-15 | 2008-10-22 | 永州湘江纸业有限责任公司 | High-temp. hot-pressing type bedding paper and its prodn. method |
| CN101864689A (en) * | 2010-06-11 | 2010-10-20 | 宝鸡科达特种纸业有限责任公司 | Hot pressing tympan paper and preparation process |
| CN101289825B (en) * | 2008-06-17 | 2012-05-30 | 沈跃华 | Method for preparing fibre humidity-controlling board and apparatus |
| CN105200841A (en) * | 2015-08-18 | 2015-12-30 | 浙江金华丁丁实业有限公司 | ITO conductive film glass protective paper and manufacturing method thereof |
| CN106638084A (en) * | 2016-10-20 | 2017-05-10 | 建滔（佛冈）绝缘材料有限公司 | Production technology of high-temperature-resistant pressure-resistant tympan paper used for electronic circuit board manufacturing |
| CN110468613A (en) * | 2019-08-08 | 2019-11-19 | 岳阳林纸股份有限公司 | A kind of manufacturing method of high temperature hot pressing type bedding paper |
| CN113584945A (en) * | 2021-08-06 | 2021-11-02 | 岳阳林纸股份有限公司 | Method for manufacturing impregnated insulating paper and impregnated insulating paper |
-
1993
- 1993-12-25 CN CN 93121358 patent/CN1104275A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427680C (en) * | 2006-04-15 | 2008-10-22 | 永州湘江纸业有限责任公司 | High-temp. hot-pressing type bedding paper and its prodn. method |
| CN101289825B (en) * | 2008-06-17 | 2012-05-30 | 沈跃华 | Method for preparing fibre humidity-controlling board and apparatus |
| CN101864689A (en) * | 2010-06-11 | 2010-10-20 | 宝鸡科达特种纸业有限责任公司 | Hot pressing tympan paper and preparation process |
| CN105200841A (en) * | 2015-08-18 | 2015-12-30 | 浙江金华丁丁实业有限公司 | ITO conductive film glass protective paper and manufacturing method thereof |
| CN106638084A (en) * | 2016-10-20 | 2017-05-10 | 建滔（佛冈）绝缘材料有限公司 | Production technology of high-temperature-resistant pressure-resistant tympan paper used for electronic circuit board manufacturing |
| CN106638084B (en) * | 2016-10-20 | 2017-11-28 | 建滔（佛冈）绝缘材料有限公司 | A kind of production technology of the pressure-resistant tympan paper of high temperature resistant for electronic circuit board manufacture |
| CN110468613A (en) * | 2019-08-08 | 2019-11-19 | 岳阳林纸股份有限公司 | A kind of manufacturing method of high temperature hot pressing type bedding paper |
| CN113584945A (en) * | 2021-08-06 | 2021-11-02 | 岳阳林纸股份有限公司 | Method for manufacturing impregnated insulating paper and impregnated insulating paper |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |