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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
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  • 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 is relatively large within the thickness of the cardboard specified by the enterprise's production, which results in gray 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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: a kind of production method of high-bulk gray-bottomed white cardboard, its specific production process is:

[0016] (1) Add sodium sulfite to the wood pulp, control the mass percentage of sodium sulfite to 2% of the wood pulp, heat to 120°C, soak for 2 minutes, and then send the wood pulp into a disc refiner for beating, when the wood pulp When the filterability of the pulp was 320ml, the beating process was completed to obtain mechanical pulp;

[0017] (2) 、 Prepare the slurry required for the surface layer, surface layer, core layer, bottom layer and bottom layer by crushing, screening, purification, flotation, thermal dispersion, bleaching, refining and mixing, wherein the preparation of the surface layer and the slurry required for the bottom liner layer, add mechanical pulp to the deinked pulp used to prepare the surface liner layer and the mixed waste paper pulp used to prepare the bottom liner layer during the mixing process, wherein the deinked p...

Embodiment 2

[0021] Embodiment two: a kind of production method of high bulk gray-bottomed white cardboard, its specific production process is:

[0022] (1) Add sodium sulfite to the wood pulp, control the mass percentage of sodium sulfite to 4% of the wood pulp, heat to 128°C, soak for 4 minutes, and then send the wood pulp into a disc refiner for beating, when the wood pulp When the filterability of the pulp was 330ml, the beating process was completed to obtain mechanical pulp;

[0023] (2) 、 Prepare the slurry required for the surface layer, surface layer, core layer, bottom layer and bottom layer by crushing, screening, purification, flotation, thermal dispersion, bleaching, refining and mixing, wherein the preparation of the surface layer and the slurry required for the bottom liner layer, add mechanical pulp to the deinked pulp used to prepare the surface liner layer and the mixed waste paper pulp used to prepare the bottom liner layer during the mixing process, wherein the deinked...

Embodiment 3

[0027] Embodiment three: a kind of production method of high-bulk gray-bottomed white cardboard, its specific production process is:

[0028] (1) Add sodium dithionite to the wood pulp, control the mass percentage of sodium dithionite to 7% of the wood pulp, heat to 135°C, soak for 3 minutes, and then send the wood pulp into a disc refiner for beating , when the freeness of the wood pulp was 340ml, the beating process was completed to obtain the mechanical pulp;

[0029] (2) 、 Prepare the slurry required for the surface layer, surface layer, core layer, bottom layer and bottom layer by crushing, screening, purification, flotation, thermal dispersion, bleaching, refining and mixing, wherein the preparation of the surface layer and the slurry required for the bottom liner layer, add mechanical pulp to the deinked pulp used to prepare the surface liner layer and the mixed waste paper pulp used to prepare the bottom liner layer during the mixing process, wherein the deinked pulp ...

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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

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Application Information

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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
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