Production method for high-bulk grey board

A production method and technology of white cardboard, applied in the direction of special paper, paper, papermaking, etc., can solve the problems of unfavorable environment and resource protection, large consumption of fiber resources, large amount of pulp consumption, etc., to achieve environmental and resource protection, The effect of reduction in fiber resource consumption and usage reduction

Active Publication Date: 2012-09-26
SHANDONG BOHUI PAPER INDUSTRY CO LTD
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, many products on the market are packaged in cartons, and the cartons are all made of cardboard, so the amount of cardboard is also very large.
However, the gray-bottomed white cardboard currently on the market, in order to ensure the product performance of the cardboard, such as: stiffness, pressure resistance, folding resistance, etc., its grammage i

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

Example Embodiment

[0015] Embodiment 1: A method for producing white paperboard with high bulk thickness and gray bottom, the specific production process is:

[0016] (1) Add sodium sulfite to wood pulp, control the mass percentage of sodium sulfite to 2% of wood pulp, heat to 120℃, soak for 2min, and then send wood pulp to the disc mill for beating. When the water filterability is 320ml, the beating process is completed and mechanical pulp is obtained;

[0017] (2) 、 The slurry required for the surface layer, surface lining layer, core layer, bottom lining layer and bottom layer is prepared through disintegration, screening, purification, flotation, thermal dispersion, bleaching, refining and slurry mixing. When mixing the slurry required for the bottom liner layer, mechanical pulp is added to the deinked pulp used to prepare the surface liner and the mixed waste paper pulp used to prepare the bottom liner during the mixing process. The addition ratio of mechanical pulp is 1:1.5, the addition ratio...

Example Embodiment

[0021] Embodiment 2: A method for producing white paperboard with high bulk thickness and gray bottom. The specific production process is:

[0022] (1) Add sodium sulfite to wood pulp, control the mass percentage of sodium sulfite to 4% of wood pulp, heat to 128℃, soak for 4min, and then send wood pulp to disc mill for beating. When the water filtration degree is 330ml, the beating process is completed and mechanical pulp is obtained;

[0023] (2) 、 The slurry required for the surface layer, surface lining layer, core layer, bottom lining layer and bottom layer is prepared through disintegration, screening, purification, flotation, thermal dispersion, bleaching, refining and slurry mixing. When mixing the slurry required for the bottom liner layer, mechanical pulp is added to the deinked pulp used to prepare the surface liner and the mixed waste paper pulp used to prepare the bottom liner during the mixing process. The addition ratio of mechanical pulp is 1:1.8, the addition ratio...

Example Embodiment

[0027] Embodiment 3: A method for producing white paperboard with high bulk thickness and gray bottom. The specific production process is:

[0028] (1) Add sodium dithionite to wood pulp, control the mass percentage of sodium dithionite to 7% of wood pulp, heat to 135℃, immerse for 3min, then send wood pulp to disc mill for beating , When the filterability of wood pulp is 340ml, complete the beating process to obtain mechanical pulp;

[0029] (2) 、 The slurry required for the surface layer, surface lining layer, core layer, bottom lining layer and bottom layer is prepared through disintegration, screening, purification, flotation, thermal dispersion, bleaching, refining and slurry mixing. When mixing the slurry required for the bottom liner layer, mechanical pulp is added to the deinked pulp used to prepare the surface liner and the mixed waste paper pulp used to prepare the bottom liner during the mixing process. The addition ratio of mechanical pulp is 1:2, and the addition rati...

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 discloses a production method for a high-bulk grey board. The production method is characterized in that when pulp required for a surface lining and a bottom lining is prepared, mechanical pulp is added into deinked pulp for preparing the surface lining and mixed waste paper pulp for preparing the bottom lining respectively in a pulp mixing process. compared with the grey board processed by a traditional method, the high-bulk grey board processed by the production method provided by the invention has the advantages as follows: the gram weight is low on the premises that the thicknesses are equal and the product performances are ensured, conversely, the thickness is 12 percent lager than that of the traditional grey board on the premise of equal gram weights; and as the gram weight of the high-bulk grey board is low under the condition of equal thicknesses, so that the consumption of paper pulp is reduced, the consumption of corresponding fiber resource is reduced, and meanwhile the energy consumption during transport is also reduced, so as to correspondingly reduce the emission of carbon dioxide and facilitate the environment protection and resource protection.

Description

technical field [0001] The invention relates to a production method of cardboard in the papermaking industry, in particular to a production method of high-bulk gray-bottomed white cardboard. Background technique [0002] At present, many products on the market are packaged in cartons, and the cartons are all made of cardboard, so the amount of cardboard is also very large. However, the gray-bottomed white cardboard currently on the market, in order to ensure the product performance of the cardboard, such as: stiffness, pressure resistance, folding resistance, etc., its grammage is relatively large within the thickness of the cardboard specified by the enterprise's production, which results in gray paperboard. The amount of pulp used in the production process of bottom white paperboard is relatively large, and the corresponding consumption of fiber resources is also relatively large, which is not conducive to the protection of the environment and resources. Contents of the...

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): D21H27/00D21H17/66D21H17/65D21C5/00
Inventor 陈峰陈星亮游志贤陆柏春
Owner SHANDONG BOHUI PAPER INDUSTRY CO LTD
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