Method for improving papermaking drainage performance by adopting microfibrillated fibers

A technology of microfibrillation and performance, which is applied in the post-treatment modification of cellulose pulp, the addition of non-fibrous pulp, and the treatment of fiber raw materials. It can solve problems such as water drainage problems, reduce dosage, increase filler content, and improve drainage. and the effect of retaining performance
CN113106775AActive Publication Date: 2021-07-13CHINA NAT PULP & PAPER RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NAT PULP & PAPER RES INST CO LTD
Publication Date
2021-07-13

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Abstract

The invention provides a method for improving the water filtering performance of paper by adopting microfibrillated fibers, and particularly relates to a method for forming a compound by adopting the microfibrillated fibers and fine components and then filling the compound into a papermaking process, so that the water filtering performance and the retention performance of the paper can be improved, the ash content in the paper can be effectively improved, and the use amount of paper pulp fibers can be reduced. Under the same paper making process conditions, the content of the filler in the paper can be increased on the premise that the strength performance of the paper is guaranteed, the papermaking water filtration and retention performance of the paper can be effectively improved, and the problem that the water filtration performance is reduced due to the fact that microfibrillated fibers are used for a papermaking system is effectively solved. The microfibrillated fibers and fine components obtained through white water recovery are adopted to form a compound to be used for paper filling, and the use amount of fresh paper pulp can be effectively reduced.
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Description

technical field

[0001] The invention belongs to the technical field of pulping and papermaking, and in particular relates to a method for improving the water drainage performance of paper by adopting microfibrillated fibers. Background technique

[0002] With the growth of paper and cardboard consumption and the rapid increase of paper industry production capacity, the supply of fiber raw materials has become a bottleneck restricting the development of the industry. At present, the global papermaking raw materials are still in a tense situation. How to replace pulp with as many mineral fillers as possible and improve the utilization rate of fibers has become the development trend of papermaking technology.

[0003] Traditional fillers and filling methods will reduce the bonding strength between fibers in the slurry. At present, traditional fillers are used in papermaking. By optimizing the retention and drainage system and increasing the amount of retention and drainage aid...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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