WO2020140736A1 - Procédé de fabrication de papier - Google Patents

Procédé de fabrication de papier Download PDF

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Publication number
WO2020140736A1
WO2020140736A1 PCT/CN2019/125461 CN2019125461W WO2020140736A1 WO 2020140736 A1 WO2020140736 A1 WO 2020140736A1 CN 2019125461 W CN2019125461 W CN 2019125461W WO 2020140736 A1 WO2020140736 A1 WO 2020140736A1
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WO
WIPO (PCT)
Prior art keywords
paper sheet
paper
raw materials
wet paper
gelatinous
Prior art date
Application number
PCT/CN2019/125461
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English (en)
Chinese (zh)
Inventor
何仁城
Original Assignee
深圳市大可奇科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳市大可奇科技有限公司 filed Critical 深圳市大可奇科技有限公司
Publication of WO2020140736A1 publication Critical patent/WO2020140736A1/fr

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    • 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

Definitions

  • the invention relates to the technical field of papermaking.
  • the mechanism is continuous on the paper machine, diluting the pulp suitable for the paper quality to a certain concentration with water, dewatering initially in the wire part of the paper machine to form a wet paper sheet, then dewatering by pressing, and then drying into paper.
  • the frame with bamboo curtain, polyester net or copper net is used to copy the fibers dispersed in water into wet paper sheets, which are dehydrated by pressing, and then dried or dried into paper.
  • the biggest difference between machine-made and hand-made paper is that, because hand-made paper is manually beaten, the fibers in the pulp are well preserved; machine-made paper is beaten by machines, and the pulp fibers are broken. This makes handmade paper much better than machine-made paper in toughness.
  • the mechanism paper has a pulp web speed difference, resulting in uneven distribution of fibers in the vertical and horizontal directions, and handmade paper does not have uneven distribution of fibers in the vertical and horizontal directions, which is particularly reflected on calligraphy and painting paper (such as rice paper).
  • the existing papermaking technology In order to use white paper, the existing papermaking technology generally uses the chemical method of bleaching. The product of this method seriously affects the environment, and a large number of chemical agents are used in paper manufacturing. The use of paper is not safe and environmentally friendly, which is easy to harm. The user's physical and mental health, and the existing paper-making technology adopts the process of reacting in water in order to distribute the fiber evenly, requiring a large amount of water resources, causing waste of water resources, and its products have a serious impact on the environment.
  • the purpose of the present invention is to provide a papermaking method that can save water resources and is environmentally friendly.
  • step E coloring the wet paper sheet to change its surface to the desired color.
  • the composition ratio of the raw materials for adjusting the paper manufacturing described in step C includes modulation: the mass content of cellulose is 40%-95%, the mass content of hemicellulose is 2.5%-20%, and the mass content of lignin It is 0-30%, the mass content of the filler is 0-35%, the mass content of the prepared binder is 0-10%, and the average fiber length is 0.5-5 mm.
  • the viscosity of the gelatinous dough described in step C is 50-1000 Pa ⁇ s.
  • step D includes:
  • the gelatinous dough passes through the above-mentioned gap to form a wet paper sheet, and the humidity of the wet paper sheet is 50% to 70%.
  • step E includes:
  • step F is one or a combination of baking dehydration, press dehydration, and air drying dehydration; the moisture of the wet paper sheet is dehydrated to 5% to 8% to form a dry paper sheet.
  • step G includes:
  • the preparation of the average fiber length compare the average fiber length of the fiber raw material with the set average fiber length after step B, and then add relatively long fibers or relatively short fibers to the fiber raw material to achieve the set average fiber length.
  • the pulping method used in step A includes: mechanical energy pulping, chemical and thermal energy pulping, and mechanochemical comprehensive treatment pulping.
  • step D is a tablet press.
  • the fiber raw material in step A is one of stem fibers, bast fibers, seed wool fibers, and wood fibers, or a combination thereof.
  • the screening method used in step B is one of a screen filtering screening method and a gravity filtering method or a combination thereof.
  • step C is one of unidirectional stirring, multidirectional stirring, stranded stirring, or a combination thereof.
  • the prepared adhesive is one of natural adhesive, synthetic adhesive, or a combination thereof.
  • the colored adhesive is one of natural adhesive, synthetic adhesive, or a combination thereof.
  • the invention does not require paper pulp to react in water, saves a lot of water resources, not only has high working efficiency, but also saves energy and protects the environment.
  • Figure 1 is a flowchart of a preferred embodiment of the present invention
  • step C is a flowchart of step C of the preferred embodiment of the present invention.
  • step D of the preferred embodiment of the present invention is a flowchart of step D of the preferred embodiment of the present invention.
  • step E is a flowchart of step E of the preferred embodiment of the present invention.
  • FIG. 5 is a flowchart of step G of the preferred embodiment of the present invention.
  • a papermaking method includes the following steps:
  • the above diameter is not greater than the gap between two parallel rollers placed in the tablet press. It can be adjusted according to different paper types.
  • the thickness of the finished paper affects the maximum diameter of particles and filaments that can be accepted during the crushing process of the fiber raw material.
  • the fiber raw material is composed of long fibers and short fibers, the length of the long fibers is 2 to 5 mm, and the length of the short fibers is 0.5 to 2 mm.
  • the pulping method in step A includes: mechanical energy pulping, chemical and thermal energy pulping, and mechanochemical comprehensive treatment pulping.
  • mechanical energy is used for pulping, and the fiber raw material is processed by a grinder.
  • the processed fiber raw material has better hydrophilicity.
  • the fiber raw material described in step A is one or a combination of stem fibers, bast fibers, seed wool fibers, and wood fibers.
  • the screening method used is a screen filtration screening method or/and gravity filtration method.
  • the composition ratio of the raw materials used to adjust the paper in step C includes modulation: the mass content of cellulose is 40%-95%, the mass content of hemicellulose is 2.5%-20%, and the mass content of lignin is 0- 30%, the mass content of the filler is 0-35%, the mass content of the prepared binder is 0-10%, and the average fiber length is 0.5-5 mm.
  • the viscosity of the gelatinous dough described in Step C is 50 to 1000 Pa ⁇ s.
  • starch and protein are preferably used as preparation binders to reduce the use of chemical reagents, and the paper produced will not affect the health of users, and is safe and environmentally friendly.
  • Modulation of average fiber length Compare the average fiber length of the fiber raw material with the set average fiber length after step B, and then add relatively long fibers or relatively short fibers to the fiber raw material to achieve the set average fiber length.
  • the purpose of adjusting the cellulose ratio of the mixture is achieved by adding cellulose, filler, hemicellulose, and lignin.
  • the content of short fibers is also adjusted according to actual needs. A high proportion of long fibers will increase the toughness of the entire paper.
  • fibers that can be used as additives are: polyester fiber, viscose fiber, acrylic fiber, cotton fiber, etc.
  • the stirring described in step C is one or a combination of unidirectional stirring, multidirectional stirring, and twisted stirring.
  • the invention adopts the method of forward and reverse reciprocating stirring and then twisting and stirring of the high-speed mixer, so that the fibers and the adhesive are evenly distributed and interwoven, without the need to react in water, saving a lot of water resources, not only the work efficiency is high, but also Energy saving and environmental protection.
  • step C includes:
  • the prepared binder is made of materials including starch and protein.
  • the mass ratio of the long fiber, short fiber and prepared binder is 2:5:1; the length of the long fiber is 2-5 mm, and the length of the short fiber It is 0.5 ⁇ 2mm.
  • the paper raw materials are fully stirred to form a gelatinous dough, and the viscosity of the gelatinous dough is 50-1000 Pa ⁇ s.
  • the prepared adhesive is a natural adhesive or/and a synthetic adhesive.
  • Base material adhesives mainly include original (natural) starch, dextrin, casein, and now chemically synthesized and environmentally friendly various water-based latexes. Widely used in color boxes, cigarette packs, paper bags, gift boxes, hardcover boxes and various handmade boxes, as well as wooden furniture.
  • Natural binders substances derived from nature. Including biological adhesives such as starch, protein, dextrin, animal glue, shellac, hide glue, rosin, etc.; also including mineral adhesives such as asphalt.
  • Synthetic adhesive mainly refers to synthetic materials, including inorganic adhesives such as water glass, and organic adhesives such as synthetic resin and synthetic rubber.
  • Water-soluble adhesives Adhesives using water as a solvent, mainly starch, dextrin, polyvinyl alcohol, carboxymethyl cellulose, etc.
  • Solvent-based adhesive an adhesive that is insoluble in water and soluble in a certain solvent. Such as shellac, butyl rubber, etc.
  • the filling material can be selected from kaolin, calcium carbonate, talc, titanium dioxide, etc. Filling on the one hand can reduce costs, on the other hand is to improve the properties of paper products.
  • the content of filler in paper raw materials is 0 to 35%.
  • step D includes:
  • the gelatinous dough passes through the above-mentioned gap to form a wet paper sheet (cloth), and the humidity of the wet paper sheet is 50% to 70%.
  • the color ink or color adhesive is usually white.
  • the nozzle coating method is used: the nozzle is filled with white ink or white adhesive; the nozzle sticks the white ink or white The mixture is sprayed onto the surface of the cloth (wet paper sheet), and the surface color of the cloth (wet paper sheet) becomes the desired white.
  • the colored adhesive in this embodiment is a natural adhesive or/and a synthetic adhesive.
  • the nozzle is filled with white ink or white adhesive. It is preferred to use white starch adhesive for spraying on the surface, which is healthier and lower cost. For some application scenarios that do not require white, this spraying process can be omitted.
  • the whiteness can be selected according to the purpose.
  • the whiteness of books and periodicals paper is 55%-75%
  • the whiteness of newsprint is 45%-52%
  • the whiteness of offset color printing paper is 77%-87%
  • the whiteness of color printing coated paper The maximum requirement is 80% to 85%.
  • the dehydration method is one or a combination of baking dehydration, press dehydration, and air drying dehydration; it is formed by dehydrating the humidity of the wet paper sheet to 5% to 8% Dry paper sheet.
  • step G includes:
  • the fiber raw materials are crushed into particles with an average diameter of less than 1000 ⁇ m and filaments with a diameter of 1 to 1000 ⁇ m; After the physical selection of the fiber raw materials, to remove impurities and debris; according to the actual output demand and the actual fiber content of the raw materials, by adding cellulose, filler, hemicellulose, lignin to achieve the modulation of the fiber mixture
  • the purpose of the element ratio is also to adjust the ratio of the content of long fibers and short fibers according to actual needs. A high ratio of long fibers will improve the toughness of the entire paper.
  • the fiber and the preparation adhesive are evenly distributed and interweaved by the forward and reverse reciprocating stirring of the high-speed mixer and then the twisting and stirring method, and then the gelatinous dough is formed.
  • the method of the invention is simple, and the surface of the produced colored paper is sprayed or printed with white adhesive or white ink, which becomes a generally accepted white color.
  • the invention does not require paper pulp to react in water, saves a lot of water resources, not only has high working efficiency, but also saves energy and protects the environment.

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  • Paper (AREA)

Abstract

L'invention concerne un procédé de fabrication de papier qui comprend les étapes suivantes consistant : à broyer des matières premières de fibres en particules d'un diamètre moyen inférieur à 1000 µm et en filaments d'un diamètre de 1 à 1000 µm ; à filtrer physiquement les matières premières de fibres broyées pour éliminer les impuretés et autres substances à l'intérieur de celles-ci ; à moduler des proportions de constituants de matières premières pour la fabrication de papier et à mélanger uniformément pour former une pâte colloïdale ; à presser la pâte colloïdale à travers un espace entre deux rouleaux parallèles pour former une feuille de papier humide ; à déshydrater la feuille de papier humide pour former une feuille de papier sèche ; à couper et à effectuer un coupage de chute sur la feuille de papier sèche.
PCT/CN2019/125461 2018-12-30 2019-12-15 Procédé de fabrication de papier WO2020140736A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201811644400.0A CN109594396A (zh) 2018-12-30 2018-12-30 一种造纸的方法
CN201811644400.0 2018-12-30
CN201911118483.4A CN110700003A (zh) 2018-12-30 2019-11-15 造纸的方法
CN201911118483.4 2019-11-15

Publications (1)

Publication Number Publication Date
WO2020140736A1 true WO2020140736A1 (fr) 2020-07-09

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Application Number Title Priority Date Filing Date
PCT/CN2019/125461 WO2020140736A1 (fr) 2018-12-30 2019-12-15 Procédé de fabrication de papier

Country Status (2)

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CN (2) CN109594396A (fr)
WO (1) WO2020140736A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109594396A (zh) * 2018-12-30 2019-04-09 深圳市大可奇科技有限公司 一种造纸的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109537363A (zh) * 2019-01-11 2019-03-29 北京印刷学院 一种再生纸及其制备方法
CN109594396A (zh) * 2018-12-30 2019-04-09 深圳市大可奇科技有限公司 一种造纸的方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109594396A (zh) * 2018-12-30 2019-04-09 深圳市大可奇科技有限公司 一种造纸的方法
CN109537363A (zh) * 2019-01-11 2019-03-29 北京印刷学院 一种再生纸及其制备方法

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CN110700003A (zh) 2020-01-17
CN109594396A (zh) 2019-04-09

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