CN110983857A - Thickened chlorine-free insulating paper and production and drying process thereof - Google Patents
Thickened chlorine-free insulating paper and production and drying process thereof Download PDFInfo
- Publication number
- CN110983857A CN110983857A CN201911099068.9A CN201911099068A CN110983857A CN 110983857 A CN110983857 A CN 110983857A CN 201911099068 A CN201911099068 A CN 201911099068A CN 110983857 A CN110983857 A CN 110983857A
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- CN
- China
- Prior art keywords
- paper
- production
- insulating paper
- drying process
- screening
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
- D21H23/56—Rolls
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention discloses thickened chlorine-free insulating paper and a production and drying process thereof, and the process comprises the following steps of pulping and papermaking: screening the paper stock, namely diluting the prepared paper stock into a lower concentration, and screening impurities and undissociated fiber bundles again by using screening equipment; a wire part, a press part, which guides the wet paper removed from the wire surface to a roller with felt to further dewater the wet paper; a drying part, which adopts a contact drying mode, firstly heats up, then keeps the temperature constant, and then reduces the temperature; surface sizing; a calender part for calendering the paper by a calender; rolling paper, cutting and packaging. This application is through optimizing the step of insulating paper production technology, has improved the efficiency of insulating paper production greatly, can carry out large-scale production to insulating paper, and the production technology that this application provided meets the end to workman's technical merit requirement moreover, and the production technology workman grasps very easily to the cost of production has been reduced.
Description
Technical Field
The invention relates to the technical field of papermaking, in particular to thickened chlorine-free insulating paper and a production and drying process thereof.
Background
The insulating paper is a general term for electrical insulating paper, is used as an insulating material for various electrical equipment such as cables and coils, has good insulating performance and mechanical strength, and has various characteristics, for example, NOMEX insulating paper is aromatic polyamide, which is generally called aramid, and NOMEX aromatic polyamide is generally seen in places where electrical insulation is required.
The existing insulating paper production technology has low efficiency, cannot meet the market demand, has high production cost due to high requirement on the professional skill of the process caused by complex process, and carries out technical innovation on the technical basis of the existing insulating paper production technology aiming at the condition.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides thickened chlorine-free insulating paper and a production drying process thereof, and solves the problems that the insulating paper provided in the background art is low in production technology efficiency, cannot meet the market demand, and is complex in process, so that the requirement on the professional skill of the process is high, and the production cost is high.
In order to achieve the purpose, the invention is realized by the following technical scheme: a thickened chlorine-free insulating paper and a production and drying process thereof comprise the following process steps:
s1, pulping: crushing the wood without bark by a pulper, adding water to dilute the pulp, removing slag in a slag remover, removing impurities with density smaller than and larger than that of the fiber in a cylindrical screen, swelling the fiber in a defibering machine to make the fiber fine, and then pulping by a pulping machine;
s2, manufacturing: screening the paper stock, namely diluting the prepared paper stock into a lower concentration, and screening impurities and undissociated fiber bundles again by using screening equipment;
s3, a net part enables the paper material to flow out of the head box and be uniformly distributed and interwoven on the circulating copper wire net;
s4, a squeezing part is used for leading the wet paper with the net surface removed to a roller with felt so as to further dewater the wet paper;
s5, a drying part adopts a contact drying mode, firstly heats up, then keeps the temperature constant, and then reduces the temperature;
s6, surface sizing; under the action of the compression roller, the sizing material forms a layer of uniform and compact film on the surface of the paper to fill uneven gaps on the surface of the paper;
s7, coating, namely, taking white pigments such as porcelain clay, calcium carbonate, titanium dioxide and the like as main bodies, dispersing the white pigments in a solution of an adhesive, and adding a coating prepared from various auxiliary agents to coat the surface of the base paper;
s8, a calendaring part, wherein the paper is calendered by a calendaring machine;
and S9, rolling, cutting and packaging.
Preferably, the pulper adopts a hydraulic pulper.
Preferably, the net part is dewatered and formed under the action of a wiper plate and a vacuum box.
Preferably, in the wire section step, the concentration of the upper wire pulp is 0.1-1.2%, the dryness of the paper sheet when the paper sheet is taken out of the couch roll is 15-25%, and the dryness of the formed paper sheet is 90-95%.
Preferably, the paper dryness of the dryer section is 92-95%.
The invention provides thickened chlorine-free insulating paper and a production and drying process thereof, and the thickened chlorine-free insulating paper has the following beneficial effects: this application is through optimizing the step of insulating paper production technology, has improved the efficiency of insulating paper production greatly, can carry out large-scale production to insulating paper, and the production technology that this application provided meets the end to workman's technical merit requirement moreover, and the production technology workman grasps very easily to the cost of production has been reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a technical scheme that: a thickened chlorine-free insulating paper and a production and drying process thereof are disclosed, wherein the thickened chlorine-free insulating paper and the production and drying process thereof comprise the following steps:
s1, pulping: crushing the wood without bark by a pulper, adding water to dilute the pulp, removing slag in a slag remover, removing impurities with density smaller than and larger than that of the fiber in a cylindrical screen, swelling the fiber in a defibering machine to make the fiber fine, and then pulping by a pulping machine;
s2, manufacturing: screening the paper stock, namely diluting the prepared paper stock into a lower concentration, and screening impurities and undissociated fiber bundles again by using screening equipment;
s3, a net part enables the paper material to flow out of the head box and be uniformly distributed and interwoven on the circulating copper wire net;
s4, a squeezing part is used for leading the wet paper with the net surface removed to a roller with felt so as to further dewater the wet paper;
s5, a drying part adopts a contact drying mode, firstly heats up, then keeps the temperature constant, and then reduces the temperature;
s6, surface sizing; under the action of the compression roller, the sizing material forms a layer of uniform and compact film on the surface of the paper to fill uneven gaps on the surface of the paper;
s7, coating, namely, taking white pigments such as porcelain clay, calcium carbonate, titanium dioxide and the like as main bodies, dispersing the white pigments in a solution of an adhesive, and adding a coating prepared from various auxiliary agents to coat the surface of the base paper;
s8, a calendaring part, wherein the paper is calendered by a calendaring machine;
and S9, rolling, cutting and packaging.
The pulper adopts a water conservancy pulper.
The net part is dehydrated and formed under the action of a water scraping plate and a vacuum box.
In the step of the wire part, the concentration of the paper pulp entering the wire is 0.1-1.2%, the dryness of the paper sheet when the paper sheet is taken out of the couch roll is 15-25%, and the dryness of the formed paper sheet is 90-95%.
The paper dryness of the dryer section is 92-95%.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A thickened chlorine-free insulating paper and a production and drying process thereof are characterized by comprising the following process steps:
s1, pulping: crushing the wood without bark by a pulper, adding water to dilute the pulp, removing slag in a slag remover, removing impurities with density smaller than and larger than that of the fiber in a cylindrical screen, swelling the fiber in a defibering machine to make the fiber fine, and then pulping by a pulping machine;
s2, manufacturing: screening the paper stock, namely diluting the prepared paper stock into a lower concentration, and screening impurities and undissociated fiber bundles again by using screening equipment;
s3, a net part enables the paper material to flow out of the head box and be uniformly distributed and interwoven on the circulating copper wire net;
s4, a squeezing part is used for leading the wet paper with the net surface removed to a roller with felt so as to further dewater the wet paper;
s5, a drying part adopts a contact drying mode, firstly heats up, then keeps the temperature constant, and then reduces the temperature;
s6, surface sizing; under the action of the compression roller, the sizing material forms a layer of uniform and compact film on the surface of the paper to fill uneven gaps on the surface of the paper;
s7, coating, namely, taking white pigments such as porcelain clay, calcium carbonate, titanium dioxide and the like as main bodies, dispersing the white pigments in a solution of an adhesive, and adding a coating prepared from various auxiliary agents to coat the surface of the base paper;
s8, a calendaring part, wherein the paper is calendered by a calendaring machine;
and S9, rolling, cutting and packaging.
2. The thickened chlorine-free insulating paper and the production and drying process thereof according to claim 1, wherein: the pulper adopts water conservancy pulper.
3. The thickened chlorine-free insulating paper and the production and drying process thereof according to claim 1, wherein: the net part is dehydrated and molded under the action of a water scraping plate and a vacuum box.
4. The thickened chlorine-free insulating paper and the production and drying process thereof according to claim 1, wherein: in the step of the wire part, the concentration of the paper pulp entering the wire is 0.1-1.2%, the dryness of the paper sheet when the paper sheet is taken out of the couch roll is 15-25%, and the dryness of the formed paper sheet is 90-95%.
5. The thickened chlorine-free insulating paper and the production and drying process thereof according to claim 1, wherein: the paper dryness of the dryer section is 92-95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911099068.9A CN110983857A (en) | 2019-11-12 | 2019-11-12 | Thickened chlorine-free insulating paper and production and drying process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911099068.9A CN110983857A (en) | 2019-11-12 | 2019-11-12 | Thickened chlorine-free insulating paper and production and drying process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110983857A true CN110983857A (en) | 2020-04-10 |
Family
ID=70084036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911099068.9A Pending CN110983857A (en) | 2019-11-12 | 2019-11-12 | Thickened chlorine-free insulating paper and production and drying process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110983857A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134742A (en) * | 2021-11-19 | 2022-03-04 | 杭州华旺新材料科技股份有限公司 | Fiber treatment equipment for decorative base paper production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261020A (en) * | 2010-05-26 | 2011-11-30 | 招远昊坤纸业有限公司 | Process for producing chlorine-free insulation paper |
| CN103790073A (en) * | 2014-02-18 | 2014-05-14 | 南通中菱绝缘材料有限公司 | Production method of thickened insulating paper plate |
| CN105484104A (en) * | 2015-11-19 | 2016-04-13 | 南通中菱绝缘材料有限公司 | Production process for chlorine-free insulation paper |
| CN110396856A (en) * | 2019-08-22 | 2019-11-01 | 浙江荣晟环保纸业股份有限公司 | Control the paper technology of the DCS in plain boiled water |
-
2019
- 2019-11-12 CN CN201911099068.9A patent/CN110983857A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261020A (en) * | 2010-05-26 | 2011-11-30 | 招远昊坤纸业有限公司 | Process for producing chlorine-free insulation paper |
| CN103790073A (en) * | 2014-02-18 | 2014-05-14 | 南通中菱绝缘材料有限公司 | Production method of thickened insulating paper plate |
| CN105484104A (en) * | 2015-11-19 | 2016-04-13 | 南通中菱绝缘材料有限公司 | Production process for chlorine-free insulation paper |
| CN110396856A (en) * | 2019-08-22 | 2019-11-01 | 浙江荣晟环保纸业股份有限公司 | Control the paper technology of the DCS in plain boiled water |
Non-Patent Citations (4)
| Title |
|---|
| （芬兰）JURKKA KUUSIPALO著: "《纸和纸板加工 第13卷 中文版》", 30 June 2017 * |
| 侯志胜等: "《制浆造纸基础问答》", 29 February 1992 * |
| 祝光等: "《制浆造纸技术基础》", 29 February 2008 * |
| 龚木荣著: "《制浆造纸概论》", 31 March 2019 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134742A (en) * | 2021-11-19 | 2022-03-04 | 杭州华旺新材料科技股份有限公司 | Fiber treatment equipment for decorative base paper production |
| CN114134742B (en) * | 2021-11-19 | 2023-10-20 | 杭州华旺新材料科技股份有限公司 | Fiber treatment equipment for producing decorative base paper |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20200410 |