Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Mechano-chemical method for preparing thin-layer paper

A mechanochemical method and thinning technology, applied in pulp beating/refining method, papermaking, textiles and papermaking, etc., can solve the problems of high cost of tissue paper, low production efficiency, low paper strength, etc., and achieve low cost , The effect of improving production efficiency and increasing strength

Active Publication Date: 2014-11-05
FUJIAN AGRI & FORESTRY UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] my country's current tissue paper production cannot meet the needs of the paper consumption market, and a considerable amount of tissue paper still needs to be imported. One of the main reasons is that the production cost of tissue paper in my country is high, the output is low, and the strength of the paper is low.
This is because the beating or refining process in the current tissue paper production process only uses mechanical grinding alone, which has high energy consumption and low production efficiency.

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 2g of bamboo pulp (bamboo sulfate pulp, purchased from Nanping Paper Mill), add it to 10g of lithium chloride solution with a mass fraction of 10%, put the above materials into an ultrafine mill, and grind continuously for 90min; Lithium chloride solution, adding a large amount of water, washing the slurry until the pH value is 6-7; adding the obtained slurry to a paper former for dehydration and forming, and then pressing, drying and other processes to obtain tissue paper, Its tensile strength reaches 60-90MPa.

Embodiment 2

[0021] Weigh 5g of wood pulp (kraft wood pulp, purchased from Nanping Paper Mill), add it to 5g of N-methylmorpholine-N-oxide (NMMO) aqueous solution with a mass fraction of 70%, and grind it ultrafinely for 60min to obtain Cellulose / NMMO mixture. Remove the N-methylmorpholine-N-oxide aqueous solution, add a large amount of water, and wash the slurry until the pH value is 6-7. The slurry is put into a paper former for dehydration and forming, and then pressed and dried to form tissue paper with a tensile strength of 60-90 MPa.

Embodiment 3

[0023] Weigh 10 g of straw pulp (sulphate bleached straw pulp, purchased from Nanping Paper Mill), add it to 10 g of LiOH solution with a mass fraction of 60%, put the above materials into an ultrafine mill, and grind continuously for 120 min. Add a large amount of water, remove the LiOH solution in the upper layer, and wash the slurry until the pH value is 6-7. Put the slurry into the paper former for dehydration and forming, and then press, dry and other processes to make tissue paper with a tensile strength of 60-90MPa.

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
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a mechano-chemical method for preparing thin-layer paper. According to the invention, paper pulp and chemical auxiliary agents are ground into fibrillated pulp; and through processes such as dehydration, shaping, pressing, drying, and the like, the thin-layer paper is obtained. The method has the advantages of simple operation process, low energy consumption, and high production efficiency. With the mechano-chemical method thin-layer paper preparation method, a synergistic effect of mechanical force, heat power and chemical power can be fully utilized, reaction activation energy can be reduced, and fiber fibrillation and thinning can be promoted. Mechanical strength is good, and thin-layer paper strength can be improved.

Description

technical field [0001] The invention belongs to the field of tissue paper preparation, and in particular relates to a method for preparing tissue paper by mechanochemical method. Background technique [0002] Tissue paper is thin, soft, clean and transparent. Waste paper is biodegradable and has no pollution to the environment, so it has a wide range of uses. It can be used for packaging of food, medicine, fruit refrigerator plastic wrap, leather shoes, and handicrafts. Tissue paper mainly includes toilet paper, wrapping tissue paper, glossy tissue paper, invoice book tissue paper, postal seal paper, wax paper base paper, pattern paper base paper, etc. [0003] The current production of tissue paper in my country cannot meet the needs of the paper consumption market, and a considerable amount of tissue paper still needs to be imported. One of the main reasons is that the production cost of tissue paper in my country is high, the output is low, and the strength of the paper i...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D21D1/20
Inventor 黄彪卢麒麟陈学榕唐丽荣庄森炀李现艳林凤采陈燕丹李涛
Owner FUJIAN AGRI & FORESTRY UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com