CN111636249A - Water-absorbing lining paper for printing hygienic product and preparation method and application thereof - Google Patents
Water-absorbing lining paper for printing hygienic product and preparation method and application thereof Download PDFInfo
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- CN111636249A CN111636249A CN202010523932.XA CN202010523932A CN111636249A CN 111636249 A CN111636249 A CN 111636249A CN 202010523932 A CN202010523932 A CN 202010523932A CN 111636249 A CN111636249 A CN 111636249A
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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
- D21H27/002—Tissue paper; Absorbent paper
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- 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
- D21B1/32—Defibrating by other means of waste paper
-
- 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
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
-
- 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
- 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
- D21H11/14—Secondary fibres
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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
- 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
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- 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
Abstract
The invention belongs to the technical field of paper manufacturing. The invention provides a water absorption lining paper for a printing hygienic product, and a preparation method and application thereof, wherein the preparation method comprises the following steps: (1) adding water into raw wood pulp, mixing and disintegrating to obtain mixed pulp 1; (2) adding biological enzyme into the mixed pulp 1, and pulping for 1-2 hours to obtain mixed pulp 2; (3) adding water into the broke, disintegrating, and pulping to obtain broke pulp; (4) mixing the mixed pulp 2 with the damaged pulp, and adjusting the pH value to obtain mixed pulp 3; (5) adding a wet strength agent into the mixed pulp 3, and adjusting the pH value to obtain mixed pulp 4; (6) and adding a wet strength promoter into the mixed pulp 4, screening the pulp, forming and drying to obtain a finished product. The water absorption lining paper for the printing sanitary product, which is prepared by the method, has good printability and clear patterns. The problems of poor printability, easy fading, uncomfortable skin feeling, health hazard and the like caused by materials such as polypropylene films as color chart printing materials are solved.
Description
Technical Field
The invention relates to the technical field of paper manufacturing, in particular to a water absorption lining paper for a printing hygienic product and a preparation method and application thereof.
Background
With the ever-increasing market of pull-up pants in recent years, new technology related to pull-up pants is also rapidly developed. In order to attract infants, the front and the back of the pull-up diaper are printed with various colored patterns, the printing pattern materials used by the color pattern card of the pull-up diaper in the early stage are polypropylene films and other materials, but the polypropylene films and other materials have the defects of poor printability, easy fading, easy dirt when being bonded by glue during the production process and poor shearing performance during the production process, and the diaper is uncomfortable in skin feeling during use, difficult to degrade when being discarded after use and environment-friendly.
If wood pulp fiber paper is used as a printing material of the color chart pattern, the printing suitability is good, the color is not faded, the shearing performance in the production process is good, the skin feel is comfortable, and the paper is easy to degrade when being discarded after being used and does not pollute the environment. Although the color pattern printing paper belongs to one kind of household paper, the manufacturing method thereof is similar to that of common household paper, but the specific manufacturing method thereof is different due to the special application, and no relevant patent report about the production method of the water absorption lining paper for the sanitary product for the color pattern printing of the pull-up pants is found at present.
Disclosure of Invention
The invention aims to provide a water absorption lining paper for a sanitary product for printing, a preparation method and application thereof, which avoid the problems of poor printability, easy fading, uncomfortable skin feeling, health hazard and the like caused by a polypropylene film and the like as color picture printing materials, are easy to degrade and reduce the pollution to the environment.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of water absorption lining paper for a printing hygienic product, which comprises the following steps:
(1) adding water into the primary softwood pulp and the primary hardwood pulp, mixing and disintegrating to obtain mixed pulp 1;
(2) adding biological enzyme into the mixed pulp 1, and pulping after 1-2 hours to obtain mixed pulp 2;
(3) adding water into the broke, disintegrating, and pulping until no pulp point exists to obtain broke pulp;
(4) mixing the mixed pulp 2 with the damaged paper pulp, and adjusting the pH value to 7.5-8 to obtain mixed pulp 3;
(5) adding a wet strength agent into the mixed pulp 3, and adjusting the pH value to 6.5-7 to obtain mixed pulp 4;
(6) and adding a wet strength promoter into the mixed pulp 4, screening the pulp, forming and drying to obtain the water absorption lining paper for the printing hygienic product.
Preferably, the mass percentage of the raw softwood pulp in the mixed pulp 1 is 60-75%, and the mass percentage of the raw hardwood pulp is 25-40%.
Preferably, the biological enzyme in the step (2) is hemicellulase, and the addition amount of the biological enzyme in each ton of mixed pulp 1 is 40-50 ml.
Preferably, the addition amount of the broke pulp in the step (4) is 4 to 6% by weight of the mixed pulp 3.
Preferably, the pH value is adjusted by adopting a citric acid monohydrate aqueous solution with the mass concentration of 3-5% in the step (4) and the step (5).
Preferably, the wet strength agent in the step (5) is PAE, and the addition amount of the wet strength agent in each ton of mixed pulp 3 is 18-20 kg.
Preferably, the wet strength promoter in the step (6) is a polyacrylamide aqueous copolymer with a mass concentration of 2-3%, and the addition amount of the wet strength promoter per ton of mixed pulp 4 is 0.4-0.6 kg.
Preferably, the drying in step (6) is performed by a combination of TAD drying and cylinder drying.
The invention also provides the water absorption lining paper for the printing hygienic product prepared by the preparation method.
The invention also provides application of the water absorption lining paper for the sanitary product for printing in preparation of the color drawing paste of the pull-up pants.
The invention provides a water absorption lining paper for a printing hygienic product, and a preparation method and application thereof, wherein the preparation method comprises the following steps: (1) adding water into raw wood pulp for disintegration to obtain mixed pulp 1; (2) adding biological enzyme into the mixed pulp 1, and pulping for 1-2 hours to obtain mixed pulp 2; (3) adding water into the broke, disintegrating, and pulping to obtain broke pulp; (4) mixing the mixed pulp 2 with the damaged pulp, and adjusting the pH value to obtain mixed pulp 3; (5) adding a wet strength agent into the mixed pulp 3, and adjusting the pH value to obtain mixed pulp 4; (6) and adding a wet strength promoter into the mixed pulp 4, screening the pulp, forming and drying to obtain a finished product. The water absorption lining paper for the printing sanitary product, which is prepared by the method, has good printability and clear patterns. The problems of poor printability, easy fading, uncomfortable skin feeling, health hazard and the like caused by the polypropylene film serving as a color chart printing material are solved, and the environment pollution is reduced because wood pulp fiber paper is easy to degrade after being discarded.
Detailed Description
The invention provides a preparation method of water absorption lining paper for a printing hygienic product, which comprises the following steps:
(1) adding water into the primary softwood pulp and the primary hardwood pulp, mixing and disintegrating to obtain mixed pulp 1;
(2) adding biological enzyme into the mixed pulp 1, and pulping after 1-2 hours to obtain mixed pulp 2;
(3) adding water into the broke, disintegrating, and pulping until no pulp point exists to obtain broke pulp;
(4) mixing the mixed pulp 2 with the damaged paper pulp, and adjusting the pH value to 7.5-8 to obtain mixed pulp 3;
(5) adding a wet strength agent into the mixed pulp 3, and adjusting the pH value to 6.5-7 to obtain mixed pulp 4;
(6) and adding a wet strength promoter into the mixed pulp 4, screening the pulp, forming and drying to obtain the water absorption lining paper for the printing hygienic product.
In the invention, the mass percentage of the raw softwood pulp in the mixed pulp 1 is preferably 60-75%, and more preferably 70%; the mass percentage of the primary hardwood pulp is preferably 25-40%, and more preferably 30%.
In the present invention, the virgin softwood pulp is preferably Kalliper Canada pulp.
In the present invention, the native hardwood pulp is preferably eucalyptus camaldulensis pulp.
In the present invention, the disintegrating step in the step (1) is preferably a pulper.
In the present invention, the biological enzyme in the step (2) is preferably hemicellulase, and the amount of the biological enzyme added per ton of mixed pulp 1 is preferably 40 to 50ml, and more preferably 45 ml.
In the invention, the pulping process in the step (2) preferably adopts a double-disc mill.
In the invention, the concentration of the pulped pulp after pulping in the step (2) is preferably 4.5-6.0%, and more preferably 5.0-5.5%.
In the invention, the beating degree of the beating process in the step (2) is 30-32 oSR, and more preferably 31 oSR.
In the present invention, the disintegrating step in the step (3) is preferably a pulper.
In the present invention, the pulping process in the step (3) preferably adopts a double-disc mill.
In the invention, the concentration of the pulped pulp in the step (3) is preferably 4.5-6.0%, and more preferably 5.0-5.5%
In the present invention, the addition amount of the broke pulp in the step (4) is preferably 4 to 6% by weight of the mixed pulp 3, and more preferably 5% by weight of the mixed pulp 3.
In the present invention, in the step (4) and the step (5), the pH value is preferably adjusted by using a citric acid monohydrate aqueous solution having a mass concentration of 3 to 5%, and more preferably, a citric acid monohydrate aqueous solution having a mass concentration of 4%.
In the invention, the wet strength agent in the step (5) is preferably PAE, and the addition amount of the wet strength agent per ton of mixed pulp 3 is preferably 18-20 kg, and more preferably 19 kg.
In the invention, the wet strength agent in the step (5) is preferably added after being diluted by 2-4 times of water by mass, and is further preferably added after being diluted by 3 times of water by mass.
In the present invention, the wet strength promoter in the step (6) is preferably a polyacrylamide aqueous copolymer having a mass concentration of 2 to 3%, more preferably a polyacrylamide aqueous copolymer having a mass concentration of 2.5%, and the addition amount of the wet strength promoter per ton of mixed pulp 4 is preferably 0.4 to 0.6kg, more preferably 0.5 kg.
In the invention, the drying in the step (6) adopts a drying mode combining TAD drying technology and cylinder drying,
in the present invention, the drying cylinder in said step (6) is preferably a yankee cylinder.
In the present invention, the step (6) is preferably performed by using a crescent former.
The invention also provides the water absorption lining paper for the printing hygienic product prepared by the preparation method.
In the present invention, the water-absorbent liner for printed sanitary articles is preferably used in the preparation of color picture stickers for pull-ups.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
(1) Mixing 600kg of native softwood pulp and 400kg of native hardwood pulp with water, and disintegrating to obtain mixed pulp 1;
(2) adding 40ml of hemicellulase into the mixed pulp 1, wherein the action time of the biological enzyme and the pulp is 1h, adding water into a double-disc mill for pulping, wherein the pulping degree is 30 DEG SR, and the pulping concentration is 4.5%, so as to obtain mixed pulp 2;
(3) breaking the broken paper by a pulping pot, pulping by a double-disc mill until no pulp point exists, and obtaining broken paper pulp with the pulp grinding concentration of 4.5%;
(4) mixing the mixed pulp 2 and the damaged pulp, and adjusting the pH value to 7.5 by using a citric acid monohydrate aqueous solution with the mass concentration of 3% to obtain mixed pulp 3, wherein the addition amount of the damaged pulp is 4% of the weight of the mixed pulp 3;
(5) adding 18kg of wet strength agent into the mixed pulp 3, diluting with 54kg of water before adding, and adjusting the pH value to 6.5 by using a citric acid monohydrate aqueous solution with the mass concentration of 3% to obtain mixed pulp 4;
(6) adding 0.4kg of polyacrylamide aqueous copolymer with the mass concentration of 2.5% into the mixed pulp 4, screening the pulp, forming by using a crescent former to obtain wet paper, and drying by adopting a drying mode combining TAD (TAD) drying technology and drying by a drying cylinder to obtain the water absorption lining paper for the printing sanitary product.
And (4) quality inspection results: the water absorption lining paper for the printing sanitary article meets the requirement that the quantitative amount is 19.9g/m2The pH value is 7.2, the moisture content is 5.5 percent, the transverse dry tensile index is 6.9 N.m/g, the longitudinal dry tensile index is 13.4 N.m/g, and the longitudinal wet tensile strength is 86.9N/m, thereby meeting the use requirements of the water absorption lining paper for the printing sanitary product.
Example 2
(1) 650kg of primary softwood pulp and 350kg of primary hardwood pulp are mixed with water and crushed to obtain mixed pulp 1;
(2) adding 45ml of hemicellulase into the mixed pulp 1, wherein the action time of the biological enzyme and the pulp is 2 hours, adding water into a double-disc mill for pulping, wherein the pulping degree is 31 DEG SR, and the pulping concentration is 5%, so as to obtain mixed pulp 2;
(3) breaking the broken paper by a pulping pot, pulping by a double-disc mill until no pulp exists, and obtaining broken paper pulp with the pulping concentration of 5%;
(4) mixing the mixed pulp 2 and the damaged pulp, and adjusting the pH value to 7.0 by using a citric acid monohydrate aqueous solution with the mass concentration of 3.5% to obtain mixed pulp 3, wherein the addition amount of the damaged pulp is 5% of the weight of the mixed pulp 3;
(5) adding 19kg of wet strength agent into the mixed pulp 3, diluting with 57kg of water before adding, and adjusting the pH value to 6.8 by using a citric acid monohydrate aqueous solution with the mass concentration of 3% to obtain mixed pulp 4;
(6) 0.45kg of polyacrylamide aqueous copolymer with the mass concentration of 2.5 percent is added into the mixed pulp 4, the pulp is screened on the net, a crescent former is used for forming to obtain wet paper, and the wet paper is dried by adopting a drying mode combining TAD drying technology and drying cylinder drying to obtain the water absorption lining paper for the printing sanitary product.
And (4) quality inspection results: the water absorption lining paper for the printing sanitary article meets the requirement that the quantitative amount is 19.8g/m2The pH value is 7.0, the moisture content is 5.1 percent, the transverse dry tensile index is 6.8 N.m/g, the longitudinal dry tensile index is 13.3 N.m/g, and the longitudinal wet tensile strength is 86.8N/m, thereby meeting the use requirements of the water absorption lining paper for the printing sanitary product.
Example 3
(1) Mixing 700kg of primary softwood pulp and 300kg of primary hardwood pulp with water, and disintegrating to obtain mixed pulp 1;
(2) adding 45ml of hemicellulase into the mixed pulp 1, wherein the action time of the biological enzyme and the pulp is 1h, adding water into a double-disc mill for pulping, wherein the pulping degree is 32 DEG SR, and the pulping concentration is 5.5%, so as to obtain mixed pulp 2;
(3) breaking the broken paper by a pulping pot, pulping by a double-disc mill until no pulp point exists, and obtaining broken paper pulp with the pulping concentration of 5.5%;
(4) mixing the mixed pulp 2 and the damaged pulp, and adjusting the pH value to 7.5 by using a citric acid monohydrate aqueous solution with the mass concentration of 4% to obtain mixed pulp 3, wherein the addition amount of the damaged pulp is 6% of the weight of the mixed pulp 3;
(5) adding 19kg of wet strength agent into the mixed pulp 3, diluting with 57kg of water before adding, and adjusting the pH value to 6.5 by using citric acid monohydrate aqueous solution with the mass concentration of 3.5% to obtain mixed pulp 4;
(6) adding 0.5kg of polyacrylamide aqueous copolymer with the mass concentration of 2.5% into the mixed pulp 4, screening the pulp, forming by using a crescent former to obtain wet paper, and drying by adopting a drying mode combining TAD (TAD) drying technology and drying by a drying cylinder to obtain the water absorption lining paper for the printing sanitary product.
And (4) quality inspection results: the water absorption lining paper for the printing sanitary article meets the requirement that the quantitative amount is 20.3g/m2The pH value is 7.4, the water content is 5.8 percent, the transverse dry tensile index is 7.0 N.m/g, the longitudinal dry tensile index is 13.5 N.m/g, and the longitudinal wet tensile strength is 87.2N/m, thereby meeting the use requirements of the water absorption lining paper for the sanitary products for printing。
Example 4
(1) 750kg of native softwood pulp and 250kg of native hardwood pulp are mixed with water and crushed to obtain mixed pulp 1;
(2) adding 50ml of hemicellulase into the mixed pulp 1, wherein the action time of the biological enzyme and the pulp is 1h, adding water into a double-disc mill for pulping, the pulping degree is 33 DEG SR, and the pulping concentration is 6%, so as to obtain mixed pulp 2;
(3) breaking the broken paper by a pulping pot, pulping by a double-disc mill until no pulp exists, and obtaining broken paper pulp with the pulp grinding concentration of 6%;
(4) mixing the mixed pulp 2 with the damaged pulp, and adjusting the pH value to 8 by using a citric acid monohydrate aqueous solution with the mass concentration of 5% to obtain mixed pulp 3, wherein the addition amount of the damaged pulp is 5% of the weight of the mixed pulp 3;
(5) adding 20kg of wet strength agent into the mixed pulp 3, diluting with 60kg of water before adding, and adjusting the pH value to 7 by using a citric acid monohydrate aqueous solution with the mass concentration of 5% to obtain mixed pulp 4;
(6) adding 0.55kg of polyacrylamide water-based copolymer with the mass concentration of 2.5 percent into the mixed pulp 4, screening the pulp, forming by using a crescent former to obtain wet paper, and drying by adopting a drying mode combining TAD (TAD) drying technology and drying by a drying cylinder to obtain the water absorption lining paper for the printing sanitary product
And (4) quality inspection results: the water absorption lining paper for the printing sanitary article meets the requirement that the quantitative amount is 20.6g/m2The pH value is 7.5, the water content is 6.0 percent, the transverse dry tensile index is 7.0 N.m/g, the longitudinal dry tensile index is 13.4 N.m/g, and the longitudinal wet tensile strength is 87.5N/m, thereby meeting the use requirements of the water absorption lining paper for the printing sanitary product.
From the above embodiments, the present invention provides a water absorption lining paper for a printing hygienic product, and a preparation method and an application thereof, wherein the preparation method comprises the following steps: (1) adding water into raw wood pulp for disintegration to obtain mixed pulp 1; (2) adding biological enzyme into the mixed pulp 1, and pulping for 1-2 hours to obtain mixed pulp 2; (3) adding water into the broke, disintegrating, and pulping to obtain broke pulp; (4) mixing the mixed pulp 2 with the damaged pulp, and adjusting the pH value to obtain mixed pulp 3; (5) adding a wet strength agent into the mixed pulp 3, and adjusting the pH value to obtain mixed pulp 4; (6) the wet strength accelerant is added into the mixed pulp 4, the pulp is screened, formed and dried to obtain the finished product, and the water absorption lining paper for the printing hygienic product, which is prepared by the invention, has good printability and clear patterns. The problems of poor printability, easy fading, uncomfortable skin feeling, health hazard and the like caused by materials such as polypropylene films as color chart printing materials are solved, and the wood pulp fiber paper is easy to degrade after being discarded, so that the pollution to the environment is reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A preparation method of a water absorption lining paper for a printing sanitary product is characterized by comprising the following steps:
(1) adding water into the primary softwood pulp and the primary hardwood pulp, mixing and disintegrating to obtain mixed pulp 1;
(2) adding biological enzyme into the mixed pulp 1, and pulping after 1-2 hours to obtain mixed pulp 2;
(3) adding water into the broke, disintegrating, and pulping until no pulp point exists to obtain broke pulp;
(4) mixing the mixed pulp 2 with the damaged paper pulp, and adjusting the pH value to 7.5-8 to obtain mixed pulp 3;
(5) adding a wet strength agent into the mixed pulp 3, and adjusting the pH value to 6.5-7 to obtain mixed pulp 4;
(6) and adding a wet strength promoter into the mixed pulp 4, screening the pulp, forming and drying to obtain the water absorption lining paper for the printing hygienic product.
2. The method for preparing a water absorbing lining paper for a sanitary product for printing as claimed in claim 1, wherein the mixed pulp 1 contains 60 to 75% by mass of raw softwood pulp and 25 to 40% by mass of raw hardwood pulp.
3. The method for preparing a water absorption lining paper for a sanitary product for printing as claimed in claim 1, wherein the biological enzyme in the step (2) is hemicellulase, and the addition amount of the biological enzyme is 40-50 ml per ton of mixed pulp 1.
4. The method for preparing a water absorbing liner paper for a sanitary product for printing according to claim 1, wherein the amount of the broke pulp added in the step (4) is 4 to 6% by weight of the mixed pulp 3.
5. The method for preparing a water absorbing liner paper for a sanitary product for printing according to claim 1 or 4, wherein the pH value is adjusted by using a citric acid monohydrate aqueous solution with a mass concentration of 3-5% in the steps (4) and (5).
6. The method for preparing the water absorbing liner paper for the sanitary products for printing as claimed in claim 1, wherein the wet strength agent in the step (5) is PAE, and the addition amount of the wet strength agent per ton of mixed pulp 3 is 18-20 kg.
7. The method for preparing a water absorption lining paper for a sanitary product for printing as claimed in claim 1, wherein the wet strength promoter in the step (6) is a polyacrylamide aqueous copolymer with a mass concentration of 2-3%, and the addition amount of the wet strength promoter per ton of mixed pulp 4 is 0.4-0.6 kg.
8. The method for preparing a water-absorbing liner paper for sanitary products for printing according to claim 1 or 7, wherein the drying in step (6) is performed by a combination of TAD drying technology and dryer drying.
9. The water-absorbing liner paper for a sanitary product for printing obtained by the production method according to any one of claims 1 to 8.
10. Use of the water absorbing liner paper for printed sanitary articles according to claim 9 for the preparation of a color graphic sticker for pull-ups.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112211016A (en) * | 2020-10-15 | 2021-01-12 | 福建省尤溪永丰茂纸业有限公司 | Processing technology of natural color toilet paper |
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