Transparent paper and production method thereof

A production method and technology of transparent paper, applied in papermaking, papermaking, textile and papermaking, etc., can solve the problems of low paper strength and large solvent pollution, and achieve the effects of good barrier properties, good uniformity and high transparency

Active Publication Date: 2019-01-04
浙江曼特材料科技有限公司
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of using regenerated cellulose to prepare transparent paper has the disadvantages of large solvent pollution and low paper strength [Fang Zhiqiang. Doctoral dissertation, South China University of Technology, 2014]

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

[0025] (1) Add a pretreatment solution to bleached hardwood pulp (1000g, calculated as dry pulp) with a beating degree of 13°SR. The pretreatment solution contains 0 parts of fatty alcohol polyoxyethylene ether, 3-chloro-2-hydroxy 5.6 parts of propyltrimethylammonium chloride, 94.4 parts of isopropanol, the mass ratio of dry pulp to 3-chloro-2-hydroxypropyltrimethylammonium chloride is 1:0.8, at 1500r / min Stir at high speed for 5 minutes to obtain a pretreatment slurry with a concentration of 6.6%; add 20% sodium hydroxide / isopropanol solution with a mass concentration of 20% to the pretreatment slurry to control the concentration of 3-chloro-2-hydroxypropyl trimethyl chloride The mass ratio of ammonium chloride to sodium hydroxide is 1:1.2, heated to 80°C, stirred for 30min at a stirring speed of 1500r / min to obtain a post-reaction slurry with a concentration of 5%; filter and wash the post-reaction slurry for 3 times.

[0026] (2) Quantitatively 130g / m 2 Weigh the pulp afte...

Embodiment 2

[0029] (1) Add pretreatment solution to bleached cotton pulp (1000g, calculated as dry pulp) with a beating degree of 33°SR. The pretreatment solution contains 0.4 parts of alkyl glycosides, sodium 3-chloro-2-hydroxypropanesulfonate 7.0 parts, 93.6 parts of absolute ethanol, the mass ratio of dry pulp to sodium 3-chloro-2-hydroxypropanesulfonate is 1:0.5, and stirred at a high speed of 2000r / min for 8min to obtain a pretreatment with a concentration of 12%. Slurry; add ethanolamine / absolute ethanol solution with a mass concentration of 30% to the pretreatment slurry, control the mass ratio of 3-chloro-2-hydroxypropanesulfonate to ethanolamine to be 1:1, heat to 60°C, and stir 60min, the stirring speed is 2000r / min, and the concentration of 10% of the reaction slurry is obtained; the reaction slurry is filtered and washed once.

[0030] (2) Quantitatively 280g / m 2 Weigh the pulp after washing in (1) and use a deflagger to decompose for 3 minutes at 8000 rpm, pour it into a pap...

Embodiment 3

[0033] (1) Add pretreatment solution to bleached softwood pulp (1000g, calculated as dry pulp) with a beating degree of 60°SR. The pretreatment solution contains 0.8 parts of alkylsulfonate, 7.5 parts of monochloroacetic acid, and 91.7 parts of methanol Parts, the mass ratio of dry pulp to monochloroacetic acid is 1:0.3, high-speed stirring at 3000r / min for 10min to obtain a pretreated slurry with a concentration of 20%; add 14.4% of the mass concentration to the pretreated slurry Sodium ethylate / methanol solution, control the mass ratio of monochloroacetic acid and sodium ethylate to 1:0.8, heat to 40°C, stir for 120min, and the stirring speed is 3000r / min, to obtain a post-reaction slurry with a concentration of 15%; The slurry was filtered and washed twice.

[0034] (2) Quantitatively 30g / m 2 Weigh the pulp after washing in (1) and use a deflaker to decompose for 4 minutes at 9000 rpm, pour it into a paper sheet machine for filtration and shape, and transfer the obtained w...

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
Air permeabilityaaaaaaaaaa
Air permeabilityaaaaaaaaaa
Air permeabilityaaaaaaaaaa
Login to view more

Abstract

The invention discloses transparent paper and a production method thereof and relates to the technical field of papermaking. The production method of the transparent paper comprises the following steps of 1, pulp treatment; 2, paper page manufacturing; 3, drying and formation. According to the transparent paper, the pulp is treated, the treated pulp is sufficiently swelled up in water and evenly hydrated, the diameter of a fiber is increased, the pulp becomes transparent, the drainability of the pulp is good, and the manufacturing condition of conventional papermaking methods is met. The highest transparency of the prepared transparent paper can reach 90%, and the transparent paper is high in tensile strength and good in insulation performance.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a transparent paper and a production method thereof. Background technique [0002] Transparent paper is a common special paper in daily life. Its history can be traced back to the middle of the 19th century. It was first used in architectural drawing and art painting or design. With the improvement of people's living standards and productivity, transparent paper has a wide range of uses, such as cellophane, tracing paper, parchment paper, transparent copy paper, transparent copy paper and transparent packaging paper. [0003] Cellulose is a natural polymer formed by the polymerization of glucose repeating units. There are many ether bonds, hydroxyl groups, C-C bonds and C-H bonds. These bonds do not absorb light in visible light wavelengths, so pure cellulose is colorless. Therefore, in theory, any cellulose can be prepared into transparent paper by a reasonable method. How...

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
IPC IPC(8): D21H11/20D21C9/00D21F13/00
CPCD21C9/002D21C9/005D21F13/00D21H11/20
Inventor 陈港彭从星张俊奇
Owner 浙江曼特材料科技有限公司
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