CN114606799B - High-performance base paper of paper-mixing adhesive tape, production method and paper-mixing adhesive tape using base paper - Google Patents

High-performance base paper of paper-mixing adhesive tape, production method and paper-mixing adhesive tape using base paper Download PDF

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Publication number
CN114606799B
CN114606799B CN202210266543.2A CN202210266543A CN114606799B CN 114606799 B CN114606799 B CN 114606799B CN 202210266543 A CN202210266543 A CN 202210266543A CN 114606799 B CN114606799 B CN 114606799B
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paper
fiber
pulp
surface sizing
base paper
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CN114606799A (en
Inventor
周振宇
华一鸣
林晓毅
毛香琴
颜鲁呜
郭婉
郑蓉
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Zhejiang Kan Special Paper Co ltd
Zhejiang Kan Specialties Material Co ltd
Zhejiang Kaien New Material Co ltd
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Zhejiang Kan Special Paper Co ltd
Zhejiang Kan Specialties Material Co ltd
Zhejiang Kaien New Material Co ltd
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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
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/08—Synthetic cellulose fibres from regenerated cellulose
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/24—Polyesters
    • 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
    • D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • 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
    • D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D21H15/06—Long fibres, i.e. fibres exceeding the upper length limit of conventional paper-making fibres; Filaments
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/28—Colorants ; Pigments or opacifying agents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

The invention belongs to the technical field of new special paper materials, and particularly relates to high-performance base paper of a paper adhesive tape, a production method and the paper adhesive tape adopting the base paper. The raw paper formula comprises the following fiber raw materials: 5-20 parts of chemical fiber, 20-50 parts of bleached short fiber wood pulp and 50-80 parts of bleached long fiber wood pulp; the bleached short fiber wood pulp is prepared by adopting a chemical pulping method. The base paper product prepared by the raw materials of the formula has good sealing performance, softer hand feeling, higher tearing degree, better permeation resistance and ageing resistance, better printing performance, more gorgeous color and full color, and the product has a transparent and moist feel after being made into the adhesive tape, and is more liked by users.

Description

High-performance base paper of paper-mixing adhesive tape, production method and paper-mixing adhesive tape using base paper
Technical Field
The invention belongs to the technical field of new special paper materials, and particularly relates to high-performance base paper of a paper adhesive tape, a production method and the paper adhesive tape adopting the base paper.
Background
And the base paper of the paper adhesive tape is used for manufacturing a base material of the paper adhesive tape, one side of the base paper of the paper adhesive tape is coated with a silicon anti-sticking layer, and the other side is coated with acrylic glue to manufacture the paper adhesive tape. If a printed product is needed, printing is firstly carried out on the surface of the base paper of the paper tape, and then two procedures of silicon coating and sizing are carried out. And paper tape use: shielding baking paint below 140 ℃ in industrial systems, such as automotive paint; the paper is soft, and is suitable for masking purposes when spraying paint for indoor and outdoor decoration, rubber-plastic parts and building sites; the method is also widely used for DIY manufacture, packaging, stationery gift matching, micro advertisement manufacture and the like. And paper tape: yellow, red, black, white, blue and other colors, and has rich and gorgeous colors. The white and paper adhesive tape can be printed with various patterns, and is very beautiful. Usage characteristics: the adhesive tape is an ideal thin adhesive tape, has good adhesive force and moderate viscosity, is required to have excellent flexibility, has excellent adhesion and shielding performance on most smooth surfaces, bending or corners, has good operability, is easy to tear, write, tear off and leave no residual adhesive after use.
The prior Chinese patent (publication No. CN 105155329A) discloses a paper adhesive tape base paper and a production method thereof; the raw materials of the product are long-fiber wood pulp, short-fiber chemical mechanical wood pulp, wet strength agent, coating latex and cortex phellodendri extract, and the raw materials are pulped, added with auxiliary agents, supercooled, paper-making, coating and paper-forming to obtain the paper tape base paper. The chemical mechanical wood pulp selected in the patent is abbreviated as chemi-mechanical pulp, and the properties and the application of chemi-mechanical pulp are as follows: the chemical pretreatment of the chemical mechanical pulping is much milder than the digestion process of the chemical pulping, has smaller delignification effect on raw materials, has less damage on cellulose, and only hemicellulose with lower molecular weight is dissolved out more, so the prepared chemi-mechanical pulp generally contains higher lignin and cellulose components. The physical strength of the paper pulp is between that of chemical pulp and mechanical pulp, so that the finished paper has very good stiffness, and the bleaching property, hydration and drainage properties are relatively close to those of mechanical pulp, and the drainage properties are good. The properly bleached chemi-mechanical pulp is mostly used for producing paperboards, newsprint, middle and low grade printing papers or matched for coating and processing base papers and the like.
The bleached hardwood chemimechanical pulp has a large number of fiber bundles, and after the pulp is fluffed for 2 hours, a small number of bundled fibers are also provided, and the pulp must be pulped to more than 30 DEG SR before no fiber bundles exist, so that paper with good evenness can be manufactured.
The cortex Phellodendri extract (phellodendron bark extract) is extracted from dried bark of phellodendron bark or phellodendron bark of Rutaceae. The former is called "Chuan Bai Huang" and the latter is called "Gua Bai Huang". Removing bark, removing coarse bark, and sun drying. Cortex Phellodendri called cortex Phellodendri, berberis Amurensis, cortex Berberidis Amurensis, and cortex Berberidis Amurensis chemical book as main ingredient. Is used as bittering agent. Has antimicrobial and protozoal effects, and is effective in lowering blood pressure, relieving epinephrine-like effect, relaxing vascular smooth muscle, exciting uterus, bladder, bronchus and gastrointestinal tract, promoting bile flow, and exciting cerebral cortex. The yellow-BAI extract liquid is not obviously improved in improvement of ageing resistance of the paper adhesive tape through a comparison test, and the yellow-BAI extract liquid can be not added in the production of high-performance and paper adhesive tape base paper.
The process has the following defects: 1) The product has good uniformity with paper tape base paper, because the ration is low, the ration before coating or sizing is generally controlled between 26 g/m and 30g/m 2 Chinese patent publication No. CN105155329A discloses a base paper of a paper tape and a production method thereof, wherein the fiber raw material of the product is selectedIn order to achieve good appearance uniformity, hardwood chemimechanical pulp must be pulped to above 30 DEG SR before no fiber bundles are present to make good uniformity paper. The raw paper prepared by the raw materials in proportion has high tightness index and low air permeability index, is not beneficial to the absorption of coating liquid in the subsequent process, and has hard hand feeling; if the mixed pulp containing the broad-leaved wood pulp is only beaten to 15-20 DEG SR, the manufactured paper has more white spots caused by fiber bundles, the overall fiber distribution is also uneven, and the appearance quality of the paper is affected; 2) The chemical mechanical wood pulp has high hardness, and the pulp contains more lignin, so that the finished paper has very good stiffness, and the paper containing 25% hardwood machine pulp can make the hand feeling of the final product harder. The wood chips contain a large amount of lignin among the fibers to bond the fibers in the wood chips together, the production mode of chemical machine pulp is adopted, the wood chips are subjected to chemical pretreatment, the chemical pretreatment is mild, the lignin leaching amount is small, the fibers are forcedly separated by using the mechanical force of disc grinding, so that a large amount of lignin exists among the fibers in the pulp after treatment, a large amount of fibers are not separately loosened in the finished pulp, a large part of fibers are bonded together, and meanwhile, a large number of fibers are greatly damaged in the mechanical friction process of the wood chips through disc grinding, so that the size and the length of the fibers and the fiber bundles in the pulp are irregular, the size of single fibers or the fiber bundles is far larger than the size of the fibers, the paper made from the pulp is large in gaps, the paper air permeability is low, the tightness is high, and the water resistance, the solvent resistance and the water seepage and the solvent seepage of paper are not facilitated; 3) As can be seen from Table 1, the brightness of bleached hardwood pulps is only 76.1%, which is about 10% lower than that of other bleached chemical pulps, so that the brightness of the manufactured paper is lower, the appearance quality of white paper is affected, and if colored paper is produced, the dyed paper is not bright enough due to low brightness of base paper, and the appearance quality of the paper is affected; 4) Chemimechanical wood pulp has a significant disadvantage: more lignin remains in the bleaching machine pulp, yellowing phenomenon is very easy to occur after paper is made, the ageing resistance is poor, fibers become brittle at the same time, and are easy to break, and the strength is obviously reduced; 5) The technology is only The coating is carried out once, and meanwhile, the sizing amount is small, the sealing property of the paper surface is insufficient, and the water resistance and solvent resistance of the paper are not facilitated; 6) The paper is not subjected to super soft calendering, the surface glossiness and the sealing property of the paper are relatively poor, and the hand feeling of the paper is relatively hard.
Disclosure of Invention
In order to improve and solve the problems of the prior art, it is an object of the present invention to provide a high-performance and paper tape base paper and a method for producing the same, which uses a mixture of chemical staple fibers and bleached natural wood pulp fibers as a fiber-based raw material, wherein the natural wood pulp staple fibers are obtained by a chemical pulping process. The base paper product prepared by the raw materials of the formula has good sealing performance, softer hand feeling, higher tearing degree, better permeation resistance and ageing resistance, better printing performance, more gorgeous color and full color, and the product has a transparent and moist feel after being made into the adhesive tape, and is more liked by users.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the formula of the fiber slurry of the high-performance paper tape base paper comprises the following fiber raw materials in parts by mass:
5-20 parts of chemical fiber,
20-50 parts of bleached short fiber wood pulp,
50-80 parts of bleached long fiber wood pulp;
wherein the bleached short fiber wood pulp and the bleached long fiber wood pulp are 100 parts; the specification of the chemical fiber is as follows: 0.4-3.0dtex, length of 2-10mm; the bleached short fiber wood pulp is prepared by adopting a chemical pulping method, the fiber length of the bleached short fiber wood pulp is 0.65-1.0mm, the fiber width is 18-23 mu m, the fiber length of the bleached long fiber wood pulp is 1.50-3.0mm, and the fiber width is 28-35 mu m.
The bleached short fiber wood pulp is partially selected in the proportion, a chemical pulping method is adopted for the bleached short fiber wood pulp, each fiber is singly and freely present, the appearance of the fiber is not damaged by strong mechanical damage, the size is kept completely and uniformly, meanwhile, lignin is rarely contained in pulp produced by the chemical pulping method, and compared with paper made by the pulp, the paper made by the pulp and paper made by a chemical pulping machine, the paper made by the pulp has obvious softer hand feeling, uniform fiber distribution, good paper uniformity, higher brightness and smaller pore diameter.
The polyester fiber or viscose fiber with the weight of 5-20% is selected in the proportion, and compared with bleached short fiber wood pulp and bleached long fiber wood pulp, the polyester fiber or viscose fiber with the weight of 5-20% is smaller in fiber width, more uniform in fiber outline dimension, better in appearance uniformity of finished paper, smaller in fiber width and smaller in pore diameter of finished paper. The tightness of the base paper manufactured by using part of polyester fibers or viscose fibers is lower, the fibers are loose, the tightness of the base paper is low, the air permeability is high, and the absorption of sizing liquid or coating liquid during sizing or coating is facilitated.
Preferably, the chemical fiber is one of polyester fiber or viscose fiber; preferably, the specifications of the fibers are: 0.5-1.7dtex 4-5mm; preferably, the weight portion is 8-12 portions.
Preferably, the bleached short fiber wood pulp is 20-40 parts by weight; 60-80 parts of bleached long fiber wood pulp; preferably, the bleached staple wood pulp has a fiber length of 0.70 to 0.85mm, a fiber width of 18 to 21 μm, and the bleached long fiber wood pulp has a fiber length of 1.80 to 2.5mm, and a fiber width of 30 to 33 μm.
Preferably, the base paper formulation further comprises one or more of a wet strength agent, a surface sizing agent, and a dye.
Preferably, the wet strength agent adopts one or two of PAE and PPE; the surface sizing liquid is acrylic emulsion.
The invention adopts surface sizing (in-machine coating) +single-sided coating. The basis weight is usually only 28g/m 2 About, the base paper is very hydrophilic, and has loose structure and tightness of 0.43g/m 3 About, the base paper is subjected to one-step inner surface sizing (inner coating) to completely soak the base paper by sizing liquid (coating liquid), and the sizing amount reaches 10g/m 2 About, the coating is carried out on one outer side of the machine, and the sizing amount is about 2g/m 2 The base paper is sized by about 10g/m 2 The air permeability index of the paper is greatly reduced after the first dipping type sizingAfter single-sided machine coating, the surface sealing performance of the paper can be greatly improved, the tightness of the paper is improved, the air permeability is greatly reduced, the aperture is obviously reduced, and the water resistance and solvent resistance of the paper can be obviously improved.
The paper can be softer and has better flexibility by selecting more sizing amount, and the transparency of the paper can be higher; because the acrylic latex has stable property below 160 ℃, can not melt, and contains more acrylic latex in the base paper of the paper tape, the paper has better high temperature resistance and ageing resistance.
Preferably, the addition amount of the wet strength agent is 0.5-2.5% of the total mass of the fiber; the total sizing amount of the surface sizing solution is 30-50% of the total mass of the base paper; the dye is added in a certain amount according to the color requirement.
Preferably, the wet strength agent is added in an amount of 1.0 to 2.0% of the total mass of the fiber.
Preferably, the total sizing amount of the surface sizing solution is 35-45% of the total mass of the base paper.
Further, the present application provides a method for producing the base paper of the paper adhesive tape, which comprises the following steps:
1) Wood pulp disintegration: adding bleached short fiber wood pulp and bleached long fiber wood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various wood pulps by a pulper, soaking, fluffing and pulping, and controlling the pulping concentration to be 4.0-6.0%; the beating degree is controlled as follows: 16-20 ° SR, wet weight: more than or equal to 7g; placing the slurry into a slurry forming tank after finishing;
3) Preparing slurry: preparing ground wood pulp in a pulp mixing pool according to a certain proportion, adding chemical fibers for mixing, and then adding a wet strength agent; diluting the wet strength agent to the concentration of 0.8-2.0%, and adding;
4) Manufacturing: diluting the prepared slurry to 0.1-0.5%, pumping into a papermaking pond, forming by a pulp pump through an inclined screen or a cylinder screen, squeezing, and drying;
5) Surface sizing (in-machine coating): the paper sheet after the previous drying enters a surface sizing device for surface sizing or in-machine coating, the surface sizing liquid or coating liquid fully submerges the paper sheet, and the surface sizing liquid or coating liquid is uniformly adsorbed in the paper sheet after uniform extrusion of a surface sizing roller or a coating roller; the concentration of the surface sizing solution or the coating solution is 2% -7%; the surface sizing solution or coating solution for surface sizing is acrylic latex, the concentration of the acrylic latex solution is 5-10%, and the sizing amount is 30-50% of the quantitative amount of the base paper; if the product needs to be dyed, adding corresponding pigment into the sizing liquid or the coating liquid;
6) Drying and coiling;
7) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, and the sizing amount is 4-6% of the quantitative amount of the base paper;
8) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 30-60MPa;
9) And (5) coiling, cutting and packaging.
The invention selects super soft calendaring to improve the surface evenness of the paper, the softness of the paper is also improved, the air permeability of the paper is further reduced, the aperture is reduced, the water resistance and solvent resistance of the paper are improved, and the paper after being coated is subjected to the super soft calendaring treatment, so that the transparent and moist feel of the base paper of the paper adhesive tape is enhanced and is more favored by users.
Further, the application provides a paper-mixing tape, wherein the base paper of the paper-mixing tape adopts the base paper of the paper-mixing tape.
The beneficial effects of the invention are as follows: compared with the product produced by the original invention of the paper tape base paper and the comparative example, the product produced by the high-performance and paper tape base paper has better quality, is more popular with customers, and has the following advantages:
1. the product has better dry and wet strength, better flexibility and tear resistance, and the product can not be layered;
2. The fabric has better flexibility;
3. the paint has better water resistance and solvent resistance;
4. the high-temperature-resistant and ageing-resistant performance is better;
5. the dyed base paper of the paper-mixing adhesive tape has better transparency, the color of the dyed base paper of the paper-mixing adhesive tape is more gorgeous, and the paper-mixing adhesive tape produced by the base paper of the paper-mixing adhesive tape has transparent and moist feel, so that the product is more liked by users.
Detailed Description
The invention will be further illustrated with reference to specific examples, to which the scope of the invention is not limited.
The raw material properties of the fiber slurry of the present application are as follows:
TABLE 1 raw material Properties of fiber slurries
Raw materials Fiber length mm Fiber width μm
Bleached hardwood chemimechanical pulp 0.60-0.70 20-23
Bleached hardwood chemical pulp 0.70-0.80 19-20
Bleached needle leaf wood chemical pulp 1.80-2.10 30-35
A production process of high-performance and paper tape base paper comprises the following steps: wood pulp disintegration, fiber dispersion, fluffing and pulping, addition of additives, chemical fiber addition, pulp preparation, deslagging, net forming (papermaking), pressing, front-path drying, surface sizing (in-machine coating), back-path drying, coiling, slitting packaging, out-of-machine coating, drying, soft calendering and overpressure, coiling, inspection, slitting packaging and other procedures.
Key indexes of the prepared paper tape base paper are as follows: quantification: 35-65g/m 2 Wherein the final quantitative amount is controlled at 35-42g/m 2 Other indexes meet the following requirements: air permeability: tensile strength (longitudinal direction) of less than or equal to 100 CU: not less than 3.0kN/m, tensile strength (transverse direction): more than or equal to 1.2kN/m 2 Elongation: more than or equal to 4 percent (longitudinal) and more than or equal to 8 percent (transverse); wet strength (machine direction): more than or equal to 1.6kN/m 2 Wet strength (transverse direction): 0.6kN/m, surface absorbency (Cob, 120 s): 8+ -2 g/m 2 (front side), 10.+ -.2 g/m 2 (reverse side), 10ml of water permeated through the paper surface time: 60s or more, paper softness: 400mN (transverse) or 1000mN (longitudinal), pore diameter: transparency of base paper of white and paper adhesive tape less than or equal to 5 mu m: more than or equal to 55 percent and the brightness more than or equal to 82 percent. The lower the softness value of the paper, the softer the paper.
Example 1
1) The slurry ratio is as follows: adding 80 parts by mass of bleached softwood pulp and 20 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 16-18 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 15 parts of 0.5dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 1.0%.
4) Manufacturing: diluting the prepared slurry to 0.1-0.2%, pumping to a papermaking pond, forming by a pulp pump on an inclined wire mesh, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control of the paper before sizing is as follows: 27-29g/m 2 The tightness is controlled as follows: 0.40-0.46g/m 3 Air permeability: 20000-40000 CU's,the surface sizing solution fully submerges the paper sheet, and is uniformly coated on the paper sheet through uniform extrusion of the surface sizing roller; the surface sizing agent is acrylic latex, and the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 10g/m 2 Left and right.
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6% of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Example 2
1) The slurry ratio is as follows: adding 80 parts by mass of bleached softwood pulp and 20 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 17-19 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 20 parts of 1.1dtex 5mm viscose fiber for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 1.2%.
4) Manufacturing: diluting the prepared slurry to 0.1-0.2%, pumping into a papermaking pond, forming by a cylinder mould through a pulp pump, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control of the paper before sizing is as follows: 27-29g/m 2 The tightness is controlled as follows: 0.40-0.46g/m 3 Air permeability: 20000-40000CU, the surface sizing liquid completely submerges the paper sheet, and the surface sizing liquid is uniformly coated on the paper sheet through uniform extrusion of the surface sizing roller; the surface sizing agent is acrylic latex, and a yellow pigment is added, wherein the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 10g/m 2 Left and right.
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6% of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Example 3
1) The slurry ratio is as follows: adding 70 parts by mass of bleached softwood pulp and 30 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 17-19 DEG SR, and the wet weight is more than or equal to 8.0g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 10 parts of 1.5dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 1.5%.
4) Manufacturing: diluting the prepared slurry to 0.1-0.2%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Surface sizing: the paper sheet dried by the previous step enters a surface sizing device for surface sizing, and sizing is carried out before sizingThe amount is controlled as follows: 27-29g/m 2 The tightness is controlled as follows: 0.40-0.46g/m 3 Air permeability: 20000-40000CU, the surface sizing liquid completely submerges the paper sheet, and the surface sizing liquid is uniformly coated on the paper sheet through uniform extrusion of the surface sizing roller; the surface sizing agent is acrylic latex, and a blue pigment is added, wherein the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 10g/m 2 Left and right.
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6% of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 45-55MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Example 4
1) The slurry ratio is as follows: adding 70 parts by mass of bleached softwood pulp and 30 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 17-19 DEG SR, and the wet weight is more than or equal to 8.0g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 10 parts of 1.1dtex 5mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 1.8%.
4) Manufacturing: diluting the prepared slurry to 0.2-0.3%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Coating in a machine: drying through a front channelThe paper sheet of (2) enters an in-machine coating device for coating, and the quantitative control is carried out before sizing: 27-29g/m 2 The tightness is controlled as follows: 0.40-0.46g/m 3 Air permeability: 20000-40000CU, the coating liquid completely submerges the paper sheet, and the coating liquid is uniformly coated on the paper sheet through uniform extrusion of a coating roller; the coating liquid is acrylic latex, and a red pigment is added, and the concentration of the coating liquid is 5% -6%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 10g/m 2 Left and right.
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 4-5% of the ration of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 45-55MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Example 5
1) The slurry ratio is as follows: 60 parts of bleached softwood pulp and 40 parts of bleached hardwood pulp are added into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 17-19 DEG SR, and the wet weight is more than or equal to 7.0g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 10 parts of 1.1dtex 5mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 0.8%.
4) Manufacturing: diluting the prepared slurry to 0.2-0.3%, pumping into a papermaking pond, forming by a cylinder mould through a pulp pump, squeezing, and drying;
5) Machine for making foodAnd (3) internal coating: the paper sheet dried in the previous step enters an in-machine coating device for coating, and the quantitative control is carried out before sizing: 37-39g/m 2 The tightness is controlled as follows: 0.42-0.47g/m 3 Air permeability: 15000-30000CU, the coating liquid completely submerges the paper sheet, and the coating liquid is uniformly coated on the paper sheet through uniform extrusion of a coating roller; the coating liquid is acrylic latex, and the concentration of the coating liquid is 5% -6%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 12g/m 2 Left and right.
6) The quantitative control of the paper is 45-49g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 3-4% of the ration of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 45-55MPa.
10 Quantitative control of the final paper: 48-52g/m 2 。
11 Coiling, cutting and packaging.
Example 6
1) The slurry ratio is as follows: adding 50 parts by mass of bleached softwood pulp and 50 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 17-19 DEG SR, and the wet weight is more than or equal to 8.0g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 20 parts of 1.7dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 0.5%.
4) Manufacturing: diluting the prepared slurry to 0.2-0.3%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Watch (watch)Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control is carried out before sizing: 47-49g/m 2 The tightness is controlled as follows: 0.43-0.48g/m 3 Air permeability: 10000-20000CU, the surface sizing liquid completely submerges the paper sheet, and the surface sizing liquid is uniformly coated on the paper sheet through uniform extrusion of the surface sizing roller; the surface sizing agent is acrylic latex, and the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 14/m 2 Left and right.
6) The quantitative control of the paper is 55-59g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 2-3% of the ration of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 58-62g/m 2 。
11 Coiling, cutting and packaging.
Comparative example 1
1) The slurry ratio is as follows: adding 100 parts by mass of bleached softwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 16-18 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 15 parts of 0.5dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 1.0%.
4) Manufacturing: diluting the prepared slurry to 0.1-0.2%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control is carried out before sizing: 27-29g/m 2 The tightness is controlled as follows: 0.40-0.46g/m 3 Air permeability: 20000-40000CU, the surface sizing liquid completely submerges the paper sheet, and the surface sizing liquid is uniformly coated on the paper sheet through uniform extrusion of the surface sizing roller; the surface sizing agent is acrylic latex, and the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 10g/m 2 Left and right.
6) The quantitative control of paper is 39-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6% of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 38-42g/m 2
11 Coiling, cutting and packaging.
Comparative example 2
1) The slurry ratio is as follows: adding 40 parts by mass of bleached softwood pulp and 60 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 16-18 DEG SR, and the wet weight is more than or equal to 5.0g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 15 parts of 0.5dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 1.2%.
4) Manufacturing: diluting the prepared slurry to 0.2-0.3%, pumping into a papermaking pond, forming by a cylinder mould through a pulp pump, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control is carried out before sizing: 27-29g/m 2 The tightness is controlled as follows: 0.40-0.46g/m 3 Air permeability: 20000-40000CU, the surface sizing liquid completely submerges the paper sheet, and the surface sizing liquid is uniformly coated on the paper sheet through uniform extrusion of the surface sizing roller; the surface sizing agent is acrylic latex, and the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 10g/m 2 Left and right.
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6% of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Comparative example 3
1) The slurry ratio is as follows: adding 80 parts by mass of bleached softwood pulp and 20 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 16-18 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 30 parts of 0.5dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 2.0%.
4) Manufacturing: diluting the prepared slurry to 0.1-0.2%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control is carried out before sizing: 27-29g/m 2 Tightness degree: 0.35-0.38g/m 3 Air permeability: 45000-55000CU (in this example, too high chemical fiber content causes the paper tightness to decrease and air permeability to increase), the surface sizing solution completely submerges the paper sheet, and the surface sizing solution is uniformly coated on the paper sheet through uniform extrusion of a surface sizing roller; the surface sizing agent is acrylic latex, and a yellow pigment is added, wherein the concentration of the surface sizing agent is 4% -5%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 10g/m 2 Left and right.
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6% of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Comparative example 4
1) The slurry ratio is as follows: adding 80 parts by mass of bleached softwood pulp and 20 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 16-18 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 10 parts of 0.5dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 1.2%.
4) Manufacturing: diluting the prepared slurry to 0.2-0.3%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control is carried out before sizing: 29-31g/m 2 The tightness is controlled as follows: 0.40-0.46g/m 3 Air permeability: 20000-40000CU, the surface sizing liquid completely submerges the paper sheet, and the surface sizing liquid is uniformly coated on the paper sheet through uniform extrusion of the surface sizing roller; the surface sizing agent is acrylic latex, and the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 35-40% of the basis weight, namely, the sizing amount is controlled to be 12g/m 2 Left and right.
6) The quantitative control of the paper is 40-42g/m 2 。
7) Drying, coiling, cutting and packaging.
Comparative example 5
1) The slurry ratio is as follows: adding 80 parts by mass of bleached softwood pulp and 20 parts by mass of bleached machine pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 18-20 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 15 parts of 0.5dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 1.5%.
4) Manufacturing: diluting the prepared slurry to 0.2-0.3%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control is carried out before sizing: 28-30g/m 2 The tightness is controlled as follows: 0.45-0.47g/m 3 Air permeability: 15000-20000CU (tightness of paper is improved and air permeability is reduced after chemical sizing agent is used), surface sizing agent completely submerges paper sheets, and the paper sheets pass through a tableUniformly extruding the surface sizing roller, and uniformly coating the surface sizing liquid on the paper sheet; the surface sizing agent is acrylic latex, and the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 25-30% of the basis weight, namely, the sizing amount is controlled to be 9g/m 2 Left and right.
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6% of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Comparative example 6
1) The slurry ratio is as follows: adding 80 parts by mass of bleached softwood pulp and 20 parts by mass of bleached machine pulp into a pulper for disintegrating;
2) Fluffing and pulping: pulp boards are mixed and disintegrated by a pulper, soaked and then fluffed and pulped, and the pulp grinding concentration is controlled to be 5.5-6.0%; the beating degree is controlled as follows: 27-29 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 15 parts of 0.5dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 0.8%.
4) Manufacturing: diluting the prepared slurry to 0.1-0.3%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control is carried out before sizing: 30-33g/m 2 The tightness is controlled as follows: 0.50-0.55g/m 3 Air permeability: 4000-6000CU (slurry formulation in this example)The paper is internally provided with partial bleaching machine pulp, so that the pulping degree is improved to 27-29 DEG SR for improving the uniformity of the paper, the tightness of the paper is greatly improved, the air permeability is greatly reduced), the surface sizing liquid completely submerges the paper sheet, and the surface sizing liquid is uniformly coated on the paper sheet through uniform extrusion of a surface sizing roller; the surface sizing agent is acrylic latex, and the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 18-22% of the basis weight, namely the sizing amount is controlled to be 6g/m 2 Left and right (the tightness of the base paper is greatly improved before sizing, the air permeability of the paper is greatly reduced, the absorbency is reduced, and the sizing amount is reduced).
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6% of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Comparative example 7
1) The slurry ratio is as follows: adding 80 parts by mass of bleached softwood pulp and 20 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 16-18 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp mixing pool according to a certain proportion, adding a wet strength agent, and diluting to a concentration of 0.8-1.0%; wet strength agent addition: 1.2%.
4) Manufacturing: diluting the prepared slurry to 0.1-0.2%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control is carried out before sizing: 29-31g/m 2 The tightness is controlled as follows: 0.46-0.49g/m 3 Air permeability: 10000-19000CU, (polyester staple fibers or viscose staple fibers are not added in the slurry proportion in the example, the tightness of the base paper is improved before sizing, the air permeability of the paper is reduced), the surface sizing liquid completely submerges the paper, and the surface sizing liquid is uniformly coated on the paper after uniform extrusion of a surface sizing roller; quantitative control before sizing is as follows: 29-32g/m 2 The surface sizing agent is acrylic latex, and a yellow pigment is added, wherein the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 20-24% of the quantitative amount of the base paper, namely, the sizing amount is controlled to be 7g/m 2 Left and right (the tightness of the base paper is higher before sizing, the paper absorptivity is reduced, and the sizing amount is reduced).
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6 of the quantitative base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Comparative example 8
1) The slurry ratio is as follows: adding 80 parts by mass of bleached softwood pulp and 20 parts by mass of bleached hardwood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 16-18 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp preparing pool according to a certain proportion, adding 10 parts of 0.5dtex 4mm polyester staple fibers for mixing, adding a wet strength agent, and diluting to the concentration of 0.8-1.0%; wet strength agent addition: 1.2%.
4) Manufacturing: diluting the prepared slurry to 0.2-0.3%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Quantitative control of paper: 27-29g/m 2 The tightness is controlled as follows: 0.40-0.46g/m 3 Air permeability: 20000-40000CU.
6) Drying, coiling and cutting.
7) The paper is subjected to off-machine dip coating, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 38-42% of the base paper, namely, the sizing amount is controlled to be 12g/m 2 Left and right;
8) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
9) The quantitative control of the final paper is as follows: 38-42g/m 2 。
10 Coiling, cutting and packaging.
Comparative example 9
1) The slurry ratio is as follows: adding 80 parts by mass of bleached softwood pulp and 25 parts by mass of bleached chemi-mechanical pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various pulp boards by a pulper, soaking, fluffing and pulping, and controlling the pulp grinding concentration to be 5.5-6.0%; the beating degree is controlled as follows: 18-20 DEG SR, and the wet weight is more than or equal to 8.5g. After fluffing and pulping, putting the mixture into a pulping tank;
3) Preparing slurry: preparing ground wood pulp in a pulp mixing pool according to a certain proportion, adding a wet strength agent, and diluting to a concentration of 0.8-1.0%; wet strength agent addition: 1.5%.
4) Manufacturing: diluting the prepared slurry to 0.2-0.3%, pumping into a papermaking pond, forming by a pulp pump through an inclined wire, squeezing, and drying;
5) Surface sizing: the paper sheet dried in the previous step enters a surface sizing device for surface sizing, and the quantitative control is carried out before sizing: 29-32g/m 2 The tightness is controlled as follows: 0,50-0.53g/m 3 Air permeability: 5000-8000CU (no chemical fiber or viscose fiber, the tightness of paper is obviously improved after partial sizing machine slurry is used, the air permeability is greatly reduced), the surface sizing solution completely submerges the paper, and the surface sizing solution is uniformly coated on the paper after uniform extrusion of a surface sizing roller; the surface sizing agent is acrylic latex, and the concentration of the surface sizing agent is 5% -6%. The sizing amount is controlled to be 20-25% of the basis weight, namely, the sizing amount is controlled to be 7g/m 2 Left and right.
6) The quantitative control of the paper is 36-39g/m 2 。
7) Drying, coiling, cutting and packaging.
8) The paper is coated on one side outside the machine, and the coating liquid is as follows: the concentration of the acrylic latex solution is 20-25%, the sizing amount is 5-6% of the base paper, namely, the sizing amount is 2g/m 2 Left and right;
9) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 50-60MPa.
10 Quantitative control of the final paper: 38-42g/m 2 。
11 Coiling, cutting and packaging.
Comparative example 10
Paper produced according to Chinese patent (publication number: CN 105155329A) and paper tape base paper and production method thereof.
The results of examples 1-6 are shown in Table 2, and the results of comparative examples 1-10 are shown in Table 3.
Table 2 examples 1-6 and paper tape base paper performance test
Figure BDA0003552114810000161
Table 3 comparative examples 1-10 and paper tape base paper performance test
Figure BDA0003552114810000171
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art. The generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. The high-performance paper tape base paper is characterized in that the formula of the fiber slurry of the paper tape base paper is composed of the following fiber raw materials in parts by weight:
5-20 parts of chemical fiber,
20-50 parts of bleached short fiber wood pulp,
50-80 parts of bleached long fiber wood pulp;
the raw paper formula also comprises a wet strength agent and a surface sizing solution, wherein the addition amount of the wet strength agent is 0.5-2.5% of the total mass of the fiber, and the wet strength agent adopts one or two of PAE and PPE;
wherein the bleached short fiber wood pulp and the bleached long fiber wood pulp are 100 parts; the specification of the chemical fiber is as follows: 0.4-3.0dtex, length of 2-10mm; the bleached short fiber wood pulp is prepared by adopting a chemical pulping method, the fiber length of the bleached short fiber wood pulp is 0.65-1.0mm, the fiber width is 18-23 mu m, the fiber length of the bleached long fiber wood pulp is 1.50-3.0mm, and the fiber width is 28-35 mu m; the chemical fiber is one of polyester fiber or viscose fiber;
the preparation method of the base paper of the paper-mixing adhesive tape comprises the following steps:
1) Wood pulp disintegration: adding bleached short fiber wood pulp and bleached long fiber wood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various wood pulps by a pulper, soaking, fluffing and pulping, and controlling the pulping concentration to be 4.0-6.0%; the beating degree is controlled as follows: 16-20 0 SR, wet weight: more than or equal to 7g; placing the slurry into a slurry forming tank after finishing;
3) Preparing slurry: preparing ground wood pulp in a pulp mixing pool according to a certain proportion, adding chemical fibers for mixing, and then adding a wet strength agent; diluting the wet strength agent to 0.5-2.5% concentration, and adding;
4) Manufacturing: diluting the prepared slurry to 0.1-0.5%, pumping into a papermaking pond, forming by a pulp pump through an inclined screen or a cylinder screen, squeezing, and drying;
the paper sheet subjected to the previous drying after making enters a surface sizing device for surface sizing, the surface sizing liquid is completely immersed into the paper sheet, the surface sizing liquid is uniformly adsorbed in the paper sheet through uniform extrusion of a surface sizing roller, the surface sizing liquid for surface sizing is acrylic latex, the concentration of the acrylic latex solution is 5-10%, and the sizing amount is 30-50% of the basis weight; after drying, the paper is coated on one side outside the machine, the coating liquid is acrylic latex, the concentration of the acrylic latex solution is 20-25%, and the sizing amount is 4-6% of the quantitative amount of the base paper.
2. The base paper of claim 1, wherein the chemical fibers have a specification of: the specification of the chemical fiber is as follows: 0.5-1.7dtex, length 4-5mm.
3. The base paper for paper adhesive tape according to claim 1, wherein the chemical fiber is 8-12 parts by mass.
4. The base paper of claim 1, wherein the bleached short fiber wood pulp is 20-40 parts by mass; the mass portion of the bleached long fiber wood pulp is 60-80 portions.
5. The base paper for paper adhesive tape according to claim 4, wherein the bleached short-fiber wood pulp has a fiber length of 0.70 to 0.85mm, a fiber width of 18 to 21 μm, a fiber length of 1.80 to 2.5mm, and a fiber width of 30 to 33 μm.
6. The base paper for paper tape according to claim 1, wherein the base paper formulation further comprises a dye; the dye is added in a certain amount according to the color requirement.
7. The base paper for paper adhesive tape according to claim 1, wherein the wet strength agent is added in an amount of 1.0 to 2.0% of the total mass of the fibers.
8. The base paper for paper adhesive tape according to claim 1, wherein the total sizing amount of the surface sizing agent is 35-45% of the total mass of the base paper.
9. A method for producing a base paper for a paper adhesive tape according to any one of claims 1 to 5, 7 and 8, characterized in that the method comprises the steps of:
1) Wood pulp disintegration: adding bleached short fiber wood pulp and bleached long fiber wood pulp into a pulper for disintegrating;
2) Fluffing and pulping: mixing and crushing various wood pulps by a pulper, soaking, fluffing and pulping, and controlling the pulping concentration to be 4.0-6.0%; the beating degree is controlled as follows: 16-20 0 SR, wet weight: more than or equal to 7g; placing the slurry into a slurry forming tank after finishing;
3) Preparing slurry: preparing ground wood pulp in a pulp mixing pool according to a certain proportion, adding chemical fibers for mixing, and then adding a wet strength agent; diluting the wet strength agent to the concentration of 0.8-2.0%, and adding;
4) Manufacturing: diluting the prepared slurry to 0.1-0.5%, pumping into a papermaking pond, forming by a pulp pump through an inclined screen or a cylinder screen, squeezing, and drying;
5) Surface sizing: the paper sheet after the previous drying enters a surface sizing device for surface sizing, the surface sizing liquid fully submerges the paper sheet, and the surface sizing liquid is uniformly adsorbed in the paper sheet after uniform extrusion of a surface sizing roller; the surface sizing solution for surface sizing is acrylic latex, the concentration of the acrylic latex solution is 5-10%, and the sizing amount is 30-50% of the quantitative amount of the base paper;
6) Drying and coiling;
7) The paper is coated on the outer side of the machine, and the sizing solution is as follows: the concentration of the acrylic latex solution is 20-25%, and the sizing amount is 4-6% of the quantitative amount of the base paper;
8) Super soft calendaring: after single-sided coating, the paper is continuously dried, and then super soft calendaring is carried out, wherein the calendaring pressure is controlled to be: 30-60MPa;
9) And (5) coiling, cutting and packaging.
10. The method of claim 9, wherein the base paper formulation further comprises a dye; determining the adding amount of the dye according to the color requirement; the corresponding dye is added into the sizing liquid.
11. A paper tape, wherein the base paper of the paper tape is the base paper of the paper tape according to any one of claims 1 to 8.
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