Method of pulping and papermaking

A technology of pulping and papermaking, a new method, applied in the field of pulping and papermaking, can solve the problems of shortage of wood raw materials, inapplicability, low proportion of industrial wood pulp, etc., achieve strong fecundity, low production cost, huge economic benefits and social benefits benefit effect

Inactive Publication Date: 2006-06-28
ZHEJIANG SCI-TECH UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today's world paper industry uses wood as the main raw material. In my country's papermaking raw material structure, the proportion of industrial wood pulp is low, and the proportion of wood pulp in domestic pulp is less than 10%. Efforts to increase the proportion of wood fiber raw materials are the key to the modernization of my country's paper industry. and sustainable development, but at present there is a serious shortage of wood raw materials for papermaking in my country
[0010] However, the current existing non-timber raw material cooking method is not suitable for papermaking by using Solidago canadensis stems

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

[0026] Embodiment 1, a kind of new method of pulping and papermaking, is made up of these three major steps of raw material preparation, cooking pulping, paper sheet making:

[0027] 1) Preparation of raw materials: take the stem of Solidago canadensis, cut it to form a sheet with a length of 2-3cm, a width of 1-2cm, and a thickness of 3-5mm, and dry it in the sun or naturally to form a herbal absolute-dried raw material ;

[0028] 2), cooking and pulping: select the above-mentioned 1000 grams of herbal dry raw materials, add Na 2 284 grams of sodium hydroxide in O meter and 0 gram of modified anthraquinone form a solid raw material, add 4494 grams of water (the solid-to-liquid weight ratio at this moment is 1: 3.5), and cook in a rotary cooker. In 60 minutes, the temperature was raised to the highest temperature of 160°C, and then kept for 120 minutes.

[0029] The brown stock yield was 49.08%, and the pulp hardness (Kappa number) was 43.4.

[0030] 3), paper sheet making:...

Embodiment 2

[0032] Embodiment 2, a kind of new method of pulping and papermaking, is made up of these three major steps of raw material preparation, cooking pulping, paper sheet making:

[0033] 1) Preparation of raw materials: take the stem of Solidago canadensis, cut it to form a sheet with a length of 2-3cm, a width of 1-2cm, and a thickness of 3-5mm, and dry it in the sun or naturally to form a herbal absolute-dried raw material ;

[0034] 2), cooking and pulping: select the above-mentioned 1000 grams of herbal dry raw materials, add Na 2 206 grams of sodium hydroxide converted into O and 2 grams of modified anthraquinone form a solid raw material, then add 4832 grams of water (the solid-to-liquid weight ratio of this moment is 1: 4), and cook in a rotary cooker. During 90 minutes, the temperature was raised to the highest temperature of 165°C, and then kept for 90 minutes.

[0035] The brown stock yield was 47.30%, and the pulp hardness (Kappa number) was 26.4.

[0036] 3), paper ...

Embodiment 3

[0038] Embodiment 3, a kind of new method of pulping and papermaking, is made up of these three major steps of raw material preparation, cooking pulping, paper sheet making:

[0039] 1) Preparation of raw materials: take the stem of Solidago canadensis, cut it to form a sheet with a length of 2-3cm, a width of 1-2cm, and a thickness of 3-5mm, and dry it in the sun or naturally to form a herbal absolute-dried raw material ;

[0040] 2), cooking and pulping: select the above-mentioned 1000 grams of herbal dry raw materials, add Na 2 219 grams of sodium hydroxide converted into O and 1.2 grams of modified anthraquinone form a solid raw material, then add 5490.9 grams of water (the solid-to-liquid weight ratio of this moment is 1: 4.5), and cook in a rotary cooker. In 60 minutes, the temperature was raised to the highest temperature of 155°C, and then kept for 150 minutes.

[0041] The brown stock yield was 42.321%, and the pulp hardness (Kappa number) was 29.1.

[0042] 3), pa...

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
lengthaaaaaaaaaa
diameteraaaaaaaaaa
hardnessaaaaaaaaaa
Login to view more

Abstract

The method discloses a pulping paper making method. It includes preparing raw material, boiling pulping, and using paper pulp to manufacture paper. The preparing raw material includes cutting a Canada yellow flower into flap with 2-3cm length, 1-2cm width, 3-5mm thickness and drying it to form herbage absolute dry raw material. The boiling pulping includes adding sodium hydroxide and modification anthraquinone into herbage absolute dry raw material to form solid raw material in proportion of 206-284 : 0-2: 1000, and adding water with 1: 3.5-4.5 solid liquid weight ratio; controlling the temperature between 155 to 165 centigrade degree, and time between 90 to 120min. The invention can reduce wood using consumption, and manufacture high quality paper.

Description

technical field [0001] The invention relates to a pulping and papermaking method, in particular to a new method for pulping and papermaking using non-wood fiber. Background technique [0002] Papermaking raw materials are the basis for the development of the papermaking industry; generally speaking, there is a serious shortage of papermaking fiber raw materials in my country. Therefore, about 20% of my country's paper products rely on imports, which has a major impact on the safety of national paper products. Today's paper industry in the world uses wood as the main raw material. In my country's papermaking raw material structure, the proportion of industrial wood pulp is low, and the proportion of wood pulp in domestic pulp is less than 10%. Efforts to increase the proportion of wood fiber raw materials are the key to the modernization of my country's paper industry. Necessary for sustainable development and sustainable development, but at present there is a serious shortag...

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): D21C3/02D21B1/06
Inventor 唐志荣陈集双李松华封云芳竺锡武金银兵白宁宁
Owner ZHEJIANG SCI-TECH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap