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

Preparation method of Stefan parchment paper

A parchment and paper technology, applied in the field of papermaking, can solve the problems of inferior quality of Difan parchment, restricting the domestic product share, blurred color on the surface of the paper, etc., to achieve the effect of strong three-dimensional effect, reliable production process and bright colors

Inactive Publication Date: 2010-07-07
MCC MEILI CLOUD COMPUTING IND INVESTMENT CO LTD
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the Difan parchment paper commonly used in China comes from imports, and its price is very expensive
However, the production process of Difan parchment paper developed and produced in China is different from that of foreign countries. The quality of the developed and produced Difan parchment paper is far inferior to similar foreign products, especially the appearance quality of the product cannot be compared with similar foreign products, such as: Some domestically produced products have defects such as large color difference on both sides, fuzzy paper surface color, weak three-dimensional effect, and easy fading of paper. These phenomena seriously restrict the market share of domestic products.

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 Construction

[0022] 1. Production of base paper

[0023] Including beating, pulping, streaming and copying

[0024] Beating process: In the process of beating and batching, it is necessary to ensure that the base paper produced can achieve the effect of parchment paper after processing, and the evenness of the produced base paper is required to be poor. In order to achieve this effect, the beating pulp should be controlled within 34-42°SR between. During the beating process, the beating material is first reflowed, and when the inspector detects that the beating degree of beating reaches the range required by the process, normal beating is carried out.

[0025] Pulp blending process: the pulp blending process uses 50-70% commercial softwood pulp + 30-50% commercial hardwood pulp for pulp blending. The slurry concentration is controlled between 4.0-5.0%, and the absolute dry volume of slurry in each pool is 2 tons (80 cubic meters in one pool). After the slurry is prepared, turn on the slu...

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

No PUM Login to View More

Abstract

The invention relates to a preparation method of Stefan parchment paper, comprising the following steps of adopting 30-50% of goods hard wood pulp and 50-70% of goods needle wood pulp in the concentration of 4.0-5.0% for slurry compounding in base paper developing process, wherein the pulping degree is 34-42 degrees SR; the pulp material is made into paper after being beaten; then the base paper is dyed via the dyestuff composed of 5-25% of thickening agent and 5-25% of permeating agent, coated, calendered and cut. The preparation method of Stefan parchment paper has flexible and simple operations, stable and reliable production technique, cheap raw material, low energy consumption, quite little waste water and small pollution; and the Stefan brown paper obtained through the method has good softness of the paper surface, strong three-dimensional sense, bright colour and strong visual effect of sheepskin.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a preparation method of Difan parchment. Background technique [0002] Difan parchment paper has the characteristics of high impermeability to water and oily substances, stiff paper quality, good hand feeling, strong three-dimensional effect, good printing ink absorption, etc., and has a strong book quality, and the characteristics of 30% recycled pulp make it Important documents are preserved for a long time. At present, most of the Difan parchment that is commonly used in China comes from imports, and its price is very expensive. However, the production process of Difan parchment paper developed and produced in China is different from that of foreign countries. The quality of the developed and produced Difan parchment paper is far inferior to similar foreign products, especially the appearance quality of the product cannot be compared with similar foreign products, such as...

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): D21H27/06
Inventor 邵进华许海明陈晓宙石龙王营
Owner MCC MEILI CLOUD COMPUTING IND INVESTMENT CO LTD
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