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

Method and device for making multiple retention-aided high-retention paper

A production device and retention technology, applied in the field of papermaking, can solve the problems of low utilization efficiency of waste paper, fiber loss, environmental pollution, etc., and achieve the effects of high retention rate, reduction of emissions, and guarantee of dehydration performance.

Active Publication Date: 2019-02-19
LEE & MAN PAPER MFG
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to repeated recycling of waste paper fibers, the fibers are getting shorter and shorter. These short fibers are very easy to lose with the dehydration of the papermaking process, which also causes waste of resources and environmental pollution.
In the existing papermaking technology, the main purpose of pulping waste paper is to filter out the impurities in the pulp, and no further chemical changes are made to the pulp, and the short fibers in the waste paper have not been changed. Recycled paper products are generally of low quality, and the utilization efficiency of waste paper is not high

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for making multiple retention-aided high-retention paper
  • Method and device for making multiple retention-aided high-retention paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0032] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0034] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the descript...

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
electrical conductivityaaaaaaaaaa
electrical conductivityaaaaaaaaaa
Login to View More

Abstract

Embodiments of the invention disclose a method and a device for manufacturing high-retention paper under the aid of multiple retention. The method comprises the following steps: pulping waste paper ina fan pump; adding a highly-electropositive retention aid into the fan pump, and carrying out uniform mixing under stirring so as to form a long-fiber pulp; subjecting the long-fiber pulp to cuttingoff in a headbox screen so as to obtain a short-fiber pulp; adding a lowly-electropositive retention aid into the short-fiber pulp in a headbox of a paper machine, and carrying out uniform mixing under stirring so as to form a moderate-length fiber pulp used as a raw material of the high-retention paper. According to the invention, through addition of the highly-electropositive retention aid intothe paper pulp, the utilization rate of pulp fiber is improved; the long-fiber pulp is shortened through the headbox screen, so the situations of non-uniformity and no dehydration caused by papermaking are avoided; the short-fiber pulp is mixed with the lowly-electropositive retention aid, so the retention and dehydration performances of short fiber are improved; the method provided by the invention has high retention rate; the fiber in effluent water has a concentration of less than 0.08% and a retention rate of more than 85%; and the utilization rate of the waste paper is improved.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a method and device for making multivariate and high-retention paper. Background technique [0002] People will produce a lot of waste paper in their production and life. If these waste papers are discarded casually, they will cause great pollution to the environment. Therefore, the country vigorously calls for the recycling and reuse of waste paper. , The requirements of an environment-friendly society. At the same time, making good use of these resources can also reduce our production costs. However, due to repeated recycling of waste paper fibers, the fibers are getting shorter and shorter. These short fibers are very easy to lose with the dehydration in the papermaking process, which also causes waste of resources and environmental pollution. In the existing papermaking technology, the main purpose of pulping waste paper is to filter out the impurities in the pulp, and ...

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 Patents(China)
IPC IPC(8): D21F11/00D21H21/10
CPCD21F11/00D21H21/10
Inventor 李文斌
Owner LEE & MAN PAPER MFG
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