A method for increasing the water absorption height of paper

Abstract

The invention discloses a method for increasing the water absorption height of paper, which belongs to the technical field of papermaking. Firstly, the ratio of raw materials is stabilized. The raw materials of paper are coniferous and broad-leaved materials. The ratio is: 75-80:20-25, and then In the pulping process, the kappa value of the pulp is controlled to be 35-43, and finally the paper with improved water absorption height is obtained through beating, pulping, screening, sizing, mesh dehydration forming, pressing, drying, and rolling. This method enables the production of The water absorption height of fireproof board core paper, wet curtain paper and other paper types meets the requirements, and not only improves the water absorption height, but also improves the physical strength, and the produced paper has good dustproof performance, which can fully meet the needs of paper production.

Description

technical field

[0001] The invention belongs to the technical field of papermaking, and in particular relates to a method for improving the water absorption height of paper. Background technique

[0002] In order to achieve better water absorption and glue absorption effect, the key quality index-water absorption height of industrial paper such as industrial fireproof board core paper and wet curtain paper used for water-cooled air-conditioning interlayer is higher, and according to the production process of ordinary paper Production, the pulp used for papermaking has a high degree of beating and requires good water resistance. If the pulp is sizing, the water absorption height of the paper will not meet the requirements. If the paper is not sizing, although the water absorption height of the paper is improved, However, the physical strength of the paper is inevitably reduced, and the paper is prone to fluff in the production process. Therefore, the invention creates a metho...

Examples

Embodiment 1

[0018] A method for improving the water absorption height of paper, firstly stabilize the ratio of raw materials, the raw materials of paper are coniferous wood and hardwood, and the ratio is: 75:25, and then control the pulp kappa value in the pulping process to 37, In the beating process, light beating is used, the beating concentration is 3.8%, and the pulp beating degree is controlled at 18°SR. After pulping and screening, the pulp is obtained, and then 2.0kg / t of paper water absorption height improver A and 0.1kg / t paper p-hydroxybenzenesulfonic acid, described water absorption height improver A is the mixture of acrylonitrile graft copolymer starch and sodium alginate, and the addition ratio of the mixture of acrylonitrile graft copolymer starch and sodium alginate is 3: 2. Finally, the finished paper with improved water absorption is obtained after pressing, drying and rolling; the pressures of the three pressing lines are: the first line pressure 30kN / m, the second line...

Embodiment 2

[0020] A method for improving the water absorption height of paper. First, the ratio of raw materials is stabilized. The raw materials of paper are softwood and hardwood, and the ratio is 80:20. Then, the pulp kappa value is controlled to 43 in the pulping process. Slight beating is used in the beating process, the beating concentration is 3.5%, the pulp beating degree is controlled at 17°SR, and the pulp is obtained through pulping and screening, and then 1.5kg / t paper water absorption height improver A and 0.05kg / t paper p-hydroxybenzenesulfonic acid, described water absorption height improver A is the mixture of acrylonitrile graft copolymer starch and sodium alginate, and the addition ratio of the mixture of acrylonitrile graft copolymer starch and sodium alginate is 3: 2. Finally, the finished paper with improved water absorption is obtained after pressing, drying and rolling; the pressures of the three pressing lines are: the first line pressure 30kN / m, the second line pr...

Embodiment 3

[0022] A method for improving the water absorption height of paper, firstly stabilize the ratio of raw materials, the raw materials of paper are softwood and hardwood, and the ratio is: 76:24, and then control the kappa value of the pulp to 35 in the pulping process, Slight beating is used in the beating process, the beating concentration is 4.0%, and the pulp beating degree is controlled at 19°SR. After pulping and screening, the pulp is obtained, and then 2.5kg / t of paper water absorption height improver A and 0.08kg / t paper p-hydroxybenzenesulfonic acid, described water absorption height improver A is the mixture of acrylonitrile graft copolymer starch and sodium alginate, and the adding ratio of the mixture of acrylonitrile graft copolymer starch and sodium alginate is 3: 2. Finally, the finished paper with improved water absorption is obtained after pressing, drying and rolling; the pressures of the three pressing lines are: the first line pressure 30kN / m, the second line ...

technical field

[0001] The invention belongs to the technical field of papermaking, and in particular relates to a method for improving the water absorption height of paper. Background technique

[0002] In order to achieve better water absorption and glue absorption effect, the key quality index-water absorption height of industrial paper such as industrial fireproof board core paper and wet curtain paper used for water-cooled air-conditioning interlayer is higher, and according to the production process of ordinary paper Production, the pulp used for papermaking has a high degree of beating and requires good water resistance. If the pulp is sizing, the water absorption height of the paper will not meet the requirements. If the paper is not sizing, although the water absorption height of the paper is improved, However, the physical strength of the paper is inevitably reduced, and the paper is prone to fluff in the production process. Therefore, the invention creates a metho...

Examples

Embodiment 1

[0018] A method for improving the water absorption height of paper, firstly stabilize the ratio of raw materials, the raw materials of paper are coniferous wood and hardwood, and the ratio is: 75:25, and then control the pulp kappa value in the pulping process to 37, In the beating process, light beating is used, the beating concentration is 3.8%, and the pulp beating degree is controlled at 18°SR. After pulping and screening, the pulp is obtained, and then 2.0kg / t of paper water absorption height improver A and 0.1kg / t paper p-hydroxybenzenesulfonic acid, described water absorption height improver A is the mixture of acrylonitrile graft copolymer starch and sodium alginate, and the addition ratio of the mixture of acrylonitrile graft copolymer starch and sodium alginate is 3: 2. Finally, the finished paper with improved water absorption is obtained after pressing, drying and rolling; the pressures of the three pressing lines are: the first line pressure 30kN / m, the second line...

Embodiment 2

[0020] A method for improving the water absorption height of paper. First, the ratio of raw materials is stabilized. The raw materials of paper are softwood and hardwood, and the ratio is 80:20. Then, the pulp kappa value is controlled to 43 in the pulping process. Slight beating is used in the beating process, the beating concentration is 3.5%, the pulp beating degree is controlled at 17°SR, and the pulp is obtained through pulping and screening, and then 1.5kg / t paper water absorption height improver A and 0.05kg / t paper p-hydroxybenzenesulfonic acid, described water absorption height improver A is the mixture of acrylonitrile graft copolymer starch and sodium alginate, and the addition ratio of the mixture of acrylonitrile graft copolymer starch and sodium alginate is 3: 2. Finally, the finished paper with improved water absorption is obtained after pressing, drying and rolling; the pressures of the three pressing lines are: the first line pressure 30kN / m, the second line pr...

Embodiment 3

[0022] A method for improving the water absorption height of paper, firstly stabilize the ratio of raw materials, the raw materials of paper are softwood and hardwood, and the ratio is: 76:24, and then control the kappa value of the pulp to 35 in the pulping process, Slight beating is used in the beating process, the beating concentration is 4.0%, and the pulp beating degree is controlled at 19°SR. After pulping and screening, the pulp is obtained, and then 2.5kg / t of paper water absorption height improver A and 0.08kg / t paper p-hydroxybenzenesulfonic acid, described water absorption height improver A is the mixture of acrylonitrile graft copolymer starch and sodium alginate, and the adding ratio of the mixture of acrylonitrile graft copolymer starch and sodium alginate is 3: 2. Finally, the finished paper with improved water absorption is obtained after pressing, drying and rolling; the pressures of the three pressing lines are: the first line pressure 30kN / m, the second line ...

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