Papermaking process for improving durability and waterproof properties of paper

A papermaking process and durable technology, applied in the field of modern papermaking, can solve the problems of lack of antibacterial, mildew, and insect repellent effects, inability to effectively remove metal ions, system equipment, and pipeline fouling, etc., to avoid secondary pollution and reduce pulp return. The effect of yellowing and improving the whiteness of pulp

Inactive Publication Date: 2018-11-13
泾县狸宣文化用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the other hand, the catalytic decomposition of metal ions in the existing papermaking process to hydrogen peroxide and hypochlorous acid bleaching agents affects the bleaching effect, and such as Fe 3+ The ions react with the phenolic groups in the pulp to form a deep-colored compound, which will reduce the whiteness of the pulp and increase the degree of yellowing of the pulp. Scaling of system equipment and pipelines, these metal ions cannot be effectively removed in the existing adding machine, the adsorption effect is not strong, and it is easy to cause secondary pollution
[0005] In addition, the application of sealing and packaging paper in the market is very extensive, but the sealing and packaging paper with anti-moth and moisture-proof functions are currently blank in the market, which greatly limits the choice of materials for many packaging products. The lack of effect will easily cause irreparable losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A papermaking process for improving the durable waterproof performance of paper in this embodiment includes the same pulping process, modulation process, papermaking process and post-processing process as the existing papermaking process. The pulping process is divided into plant fiber raw material pulping and Two steps of bleaching, the preparation process is divided into three steps of pulping, beating, sizing and filling. The main improvement of the process in this embodiment lies in:

[0042] After the plant fiber raw material pulping step and before the bleaching step, component A was added, stirred at a stirring speed of 170 r / min at a temperature of 34°C for 7 minutes, and then left to stand for 30 minutes to proceed to the next step;

[0043] Add component B before the sizing step in the preparation process, stir at a stirring speed of 10r / min for 50 minutes at a temperature of 28°C and transfer to the next step;

[0044] The component A includes the following r...

Embodiment 2

[0060] A papermaking process for improving the durable waterproof performance of paper in this embodiment includes the same pulping process, modulation process, papermaking process and post-processing process as the existing papermaking process. The pulping process is divided into plant fiber raw material pulping and Two steps of bleaching, the preparation process is divided into three steps of pulping, beating, sizing and filling. The main improvement of the process in this embodiment lies in:

[0061] Add component A after the plant fiber raw material pulping step and before the bleaching step, stir at a temperature of 36°C at a stirring speed of 180r / min for 9 minutes, then let stand for 34 minutes and transfer to the next step;

[0062] Add component B before the sizing step in the preparation process, stir for 70 minutes at a stirring speed of 14r / min at a temperature of 30°C and transfer to the next step;

[0063] The component A includes the following raw materials in p...

Embodiment 3

[0079] A papermaking process for improving the durable waterproof performance of paper in this embodiment includes the same pulping process, modulation process, papermaking process and post-processing process as the existing papermaking process. The pulping process is divided into plant fiber raw material pulping and Two steps of bleaching, the preparation process is divided into three steps of pulping, beating, sizing and filling. The main improvement of the process in this embodiment lies in:

[0080] Add component A after the plant fiber raw material pulping step and before the bleaching step, stir for 7-9 minutes at a stirring speed of 175 r / min at a temperature of 35 ° C, and then stand still for 32 minutes to transfer to the next step;

[0081] Add component B before the sizing step in the preparation process, and stir for 60 minutes at a stirring speed of 12r / min at a temperature of 29°C and transfer to the next step;

[0082] The component A includes the following raw ...

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Abstract

The invention relates to the technical field of papermaking, in particular to a papermaking process for improving the durability and the waterproof properties of paper. The papermaking process includes adding components A after plant fiber raw material pulping steps and before bleaching steps; adding components B before gluing steps in preparation procedures. The components A comprise diethylene triaminepentaacetic acid, sodium dodecyl sulfate and modified chitosan. The components B comprise plant poly-gum, pyrethrin, additive plant extract and modified dialdehyde starch. The papermaking process has the advantages that influence of metal ions on paper pulp bleaching can be effectively reduced, fibers can be effectively swollen up, and the paper is easy to dry; grain phenomena can be reduced, the strength of the paper can be enhanced, the hydration liquid permeation resistance of paper sheets can be improved, and excellent antibacterial and insect prevention effects further can be realized; various added components are nontoxic and harmless, and accordingly the papermaking process is safe and environmentally friendly and has a high practical value and an excellent application prospect.

Description

technical field [0001] The invention relates to the technical field of modern papermaking, in particular to a papermaking process for improving the durable waterproof performance of paper. Background technique [0002] Papermaking is an important invention of the working people in ancient China. There are two forms of mechanism and manual. The mechanism is carried out continuously on the paper machine. The pulp suitable for paper quality is diluted with water to a certain concentration, and is initially dehydrated in the wire part of the paper machine to form a wet paper sheet, which is then dehydrated by pressing, and then dried into paper. [0003] On the one hand, because handmade paper is beaten manually, the fibers in the pulp are well preserved and the fibers of handmade paper can be arranged in various directions evenly; machine-made paper is beaten by machines, and the pulp fibers are broken. The longitudinal and horizontal distribution of fibers is uneven. For exa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/28D21H17/07D21H17/09D21H17/24D21H17/02D21H17/06
CPCD21H17/02D21H17/06D21H17/07D21H17/09D21H17/24D21H17/28
Inventor 袁春明
Owner 泾县狸宣文化用品有限公司
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