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

Low base weight high-strength food grade unbleached waxing raw paper

A high-strength, food-grade technology, used in textiles and papermaking, paper, papermaking, etc., can solve the problems of not complying with green environmental protection and safety, unable to play the beating effect, and unable to achieve the desired effect, and achieve good fiber cutting and separation. Silk-brooming effect, improving sizing effect, good mechanical strength and uniformity

Active Publication Date: 2015-11-04
浙江佳维康特种纸有限公司
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, pulp bleaching wastewater and its sludge contain a large amount of toxic substances, which cause great harm to the environment and do not meet the requirements of green environmental protection and safety
[0005] Food-grade waxed base paper requires excellent evenness while having good mechanical strength. Therefore, it is required to obtain good fiber shortening and fibrillation effects during the beating process, semi-free and semi-viscous beating methods and multiple The beating process in series with the same disc mill can not achieve the ideal effect, and cannot play the best beating effect

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] (1) Pulping: 47 parts by weight of softwood pulp, 48 parts of hardwood pulp and 5 parts of china clay are mixed and disintegrated, and the coarse fibers are removed by a disintegrator to obtain fiber bundles with a particle size of 1mm, and then After four different disc refiners are mixed in series under different beating process parameters, the beating degree is 65°SR, and then enter the pulp mixing box to continue mixing, and add 10kg / ton of pulp cationic starch to obtain a uniform pulp;

[0027] (2) Sizing: process the mixed slurry obtained in step (1) through pulping and online papermaking, and add caustic soda to the slurry until the pH of the slurry is 5.5 during online papermaking, then add aluminum sulfate, and add it after 18 seconds Mass concentration is 10% rosin gum-water solution reverse sizing reverse, the addition of described aluminum sulfate is 15kg / ton pulp, and the addition of described rosin gum-water solution is 200kg / ton pulp;

[0028] (3) Paper m...

Embodiment 2

[0033] (1) Pulping: 54 parts by weight of softwood pulp, 40 parts of hardwood pulp and 6 parts of china clay are mixed and disintegrated, and the coarse fibers are removed by a disintegrator to obtain fiber bundles with a particle size of 0.8mm. After four different disc mills are mixed in series under different beating process parameters, the beating degree is 60°SR, and then enter the pulp mixing box to continue mixing, and add 15kg / ton pulp cationic starch to obtain a uniform pulp;

[0034] (2) Sizing: process the mixed slurry obtained in step (1) through pulping and online papermaking, and add caustic soda to the slurry until the pH of the slurry is 6.5 during the online papermaking process, then add aluminum sulfate, and after 12 seconds Adding a mass concentration of 10% rosin gum-water solution for reverse sizing, the addition of the aluminum sulfate is 20kg / ton of pulp, and the addition of the rosin gum-water solution is 100kg / ton of pulp;

[0035] (3) Paper making: T...

Embodiment 3

[0040] (1) Pulping: 60 parts by weight of softwood pulp, 36 parts of hardwood pulp and 4 parts of china clay are mixed and disintegrated, and the coarse fibers are removed by a disintegrator to obtain fiber bundles with a particle size of 0.9mm. After four different disc mills are mixed in series under different beating process parameters, the beating degree is 62°SR, and then enter the pulp mixing box to continue mixing, and add 13kg / ton pulp cationic starch to obtain a uniform pulp;

[0041] (2) Sizing: process the mixed slurry obtained in step (1) through pulping and online papermaking, and add caustic soda to the slurry during the online papermaking process until the pH of the slurry is 6.0, then add aluminum sulfate, and after 15 seconds Adding a mass concentration of 10% rosin gum-water solution reverse sizing reverse, the addition of the aluminum sulfate is 30kg / ton of pulp, the addition of the rosin gum-water solution is 150kg / ton of pulp;

[0042] (3) Paper making: T...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
water absorptionaaaaaaaaaa
Login to View More

Abstract

The invention relates to a low base weight high-strength food grade unbleached waxing raw paper. The base weight of the waxing raw paper is 20-25g / m<2>, the tightness is 0.7-0.8g / m<2>, the opacity is 60-65%, the air permeability is 0.4-0.5micrometer / Pa.s, the vertical and horizontal tearing strength is 130-140mN, the bursting strength is 85-100KPa, the evenness is 900-925, and the vertical and horizontal average fracture length is 5-8Km. The slurry adopted by the waxing raw paper comprises, by weight, 47-60 parts of softwood pulp, 36-48 parts of hardwood pulp, and 4-6 parts of china clay. The food grade unbleached waxing raw paper provided by the invention has the advantages of low base weight, high strength, high evenness, low absorption, low air permeability and certain opacity, the adopted wood pulp raw materials are not bleached and are not added with fluorescent agent or other toxic ingredients. The obtained waxing raw paper is safe and non-toxic, the production waste liquor has no toxic substance emission. Therefore, the low base weight high-strength food grade unbleached waxing raw paper is in line with the requirements of safety and environmental protection.

Description

technical field [0001] The invention relates to a waxed base paper, in particular to a low-quantity high-strength food-grade natural color waxed base paper. Background technique [0002] With the continuous development of social civilization, people have higher and higher requirements for the environment and food hygiene. Plastic products such as films, bags, containers, tools and other packaged foods are degraded due to environmental pollution and the potential health threats of plastic products themselves to the human body. Gradually replaced by other materials. Food packaging paper is made of pure wood pulp, does not contain fluorescent whitening agents and any harmful substances to the human body, and can be recycled after use, fully reflecting the characteristics of green and environmental protection. Food packaging paper can be made into different cartons according to customer needs, which can well meet the packaging of different foods by manufacturers. For products t...

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): D21H15/10D21H17/68D21H17/29D21H21/18D21H21/16D21H17/62D21D1/30
Inventor 林宏黄建荣方丽珍
Owner 浙江佳维康特种纸有限公司
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