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Method for producing paper towel by wet corrugating method

A technology of paper towel and wet method, which is applied in the direction of papermaking, paper machine, textile and papermaking, etc., to achieve the effect of ensuring stable performance and uniform wrinkles

Inactive Publication Date: 2010-04-14
ZHEJIANG XINFENG SPECIAL PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned problems in the prior art, the present invention aims to provide a method for producing paper towels by wet creping. The products produced by this method have more stable and uniform wrinkles, higher bonding strength and wet strength, and stiffness It has the advantage of being soft to the touch, and will not produce paper dust, paper powder and other undesirable phenomena

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The coniferous wood pulp is crushed to make a slurry with a concentration of 4.5%, which is refined by a ф450 disc refiner with a beating degree of 40°SR. The hardwood pulp is crushed to make a slurry with a concentration of 3%. The beating degree of the mill is 25°SR, and then 70% softwood pulp (in the absolute dry ratio) and 30% broadleaf pulp (in the absolute dry ratio) are mixed, and the beating degree of the mixed pulp is 30°SR. Add PAE (12.5% ​​solid content) into the mixed slurry at a ratio of 25kg / t, stir evenly and send to the forebay. When the dryness of the wet paper sheet is 42% after forming, dehydrating and pressing in the fourdrinier paper machine system of the Haba type, it is wrinkled by the creping scraper. The blade angle is 75°, and the speed ratio of the wrinkling dryer and the heating and drying dryer is 1.18:1. The indicators of the paper towels produced under the above conditions are: quantitative 38.8g / m 2 , Thickness 0.129mm, elongation (long...

Embodiment 2

[0014] The coniferous wood pulp is crushed to make a slurry with a concentration of 4.5%, which is refined by a ф450 disc refiner with a beating degree of 35°SR. The bagasse pulp is crushed to make a slurry with a concentration of 3%. The beating degree of the mill is 30°SR; then 50% coniferous pulp (according to the absolute dry ratio) and 50% bagasse pulp (according to the absolute dry ratio) are mixed, and the beating degree of the mixed pulp is 35°SR. Add PAE (12.5% ​​solid content) into the mixed slurry at a ratio of 25kg / t, stir evenly and send to the forebay. When the dryness of the wet paper sheet is 40% after forming, dehydrating and pressing in the Haba fourdrinier paper machine system, it is wrinkled by the creping scraper. The blade angle is 75°, and the speed ratio of the creping dryer and the heating and drying dryer is 1.16:1. The indicators of the paper towels produced under the above conditions are: quantitative 40.5g / m 2 , Thickness 0.127mm, elongation (lon...

Embodiment 3

[0016] Select the natural color coniferous wood pulp and make it into a slurry with a concentration of 4.3% after disintegration. After refining with a ф450 disc refiner, the beating degree is 42°SR. Use hardwood chemical pulp to make a slurry with a concentration of 3% after pulping , the degree of beating is 28 ° SR after being decomposed by a fine mill; then 80% natural softwood pulp (according to the absolute dry ratio) and 20% hardwood chemical pulp (according to the absolute dry ratio) are mixed, and the beating degree of the mixed pulp is is 33°SR. Add PAE (12.5% ​​solid content) into the mixed slurry at a ratio of 25kg / t, stir evenly and send to the forebay. When the dryness of the wet paper sheet is 41% after forming, dehydrating and pressing in the Haba fourdrinier paper machine system, it is wrinkled by the creping scraper. The blade angle is 65°, and the speed ratio of the wrinkling dryer and the heating and drying dryer is 1.15:1. The indicators of the paper tow...

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PUM

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Abstract

The invention relates to a method for producing a paper towel by a wet corrugating method, which comprises the following steps: when the dry degree of a wet paper page is ranged form 30% to 45% after system moulding, dehydration and squeezing of a Harper fourdrinier, corrugating by a corrugating scraper, wherein an angle formed by the corrugating scraper and a tangent of a drying cylinder is 15-35 DEG, a cutting edge angle of the scraper on the cylinder attaching surface is 55-90 DEG, and the speed ratio of the corrugation drying cylinder and the heating and drying cylinder is 1.1-1.2:1; then delivering the paper to the surface of the heating cylinder by an independent power transfer device; drying and collecting the paper and then obtaining the finished product. Compared with the prior art, the invention adopts a wet corrugating process; because the corrugation is carried out when the dry degree of a paper web is 30-45 percent, the hydrogen bond bonding force among fibers and the chemical bond bonding force of thermosetting resin, for example a wet strength agent, and the like are not formed, and the strength of the wet paper page is lower, wrinkles formed after collision by the corrugating scraper is uniform and consistent and can not generate the poor phenomena of paper scraps, paper powder, and the like.

Description

【Technical field】 [0001] The invention relates to a method for manufacturing crepe paper products, in particular to a method for producing paper towels by using a wet creping process in the wrinkling process of heating cylinders in the production process of a Haba fourdrinier multi-cylinder paper machine. 【Background technique】 [0002] Before the present invention was made, paper towels were mainly produced by dry or semi-dry creping processes. Dry creping means that the paper web is dried first, and the product is made by scraping wrinkles from the surface of the drying cylinder with a wrinkling scraper when the dryness is 90-93%; semi-dry creping means that the paper web is first Appropriate drying, in the state of 65-75% dryness, the wrinkles are scraped from the surface of the drying cylinder by a wrinkling scraper, and then dried by a drying cylinder to a dryness of 90-93% to form a product. The problems in the production of paper towels by dry or semi-dry creping pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F11/02
Inventor 程益民姚志伟包建明王建
Owner ZHEJIANG XINFENG SPECIAL PAPER
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