Method for producing environment-friendly white cardboard

A production method and technology for white cardboard, applied in the field of papermaking technology, can solve the problem of high production cost, and achieve the effects of reducing comprehensive energy consumption, reducing production cost and reasonable design

Inactive Publication Date: 2012-07-04
FUYANG HUALI PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the white cardboard in the domestic market is mainly imported white cardboard, and most domestic manufacturers use imported wood pulp for production, and its production cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Raw material preparation and classification:

[0025] Source: waste paper recycling (it can be other waste paper such as office waste paper).

[0026] Classification:

[0027] Waste paper with a whiteness greater than 80 degrees is used as a raw material for dough;

[0028] Waste paper with a whiteness of 70-80 degrees is used as the raw material for lining pulp;

[0029] Waste paper with a whiteness less than 70 degrees is used as core pulp raw material;

[0030] 2. Pulping: Put the three types of raw materials into their respective high-concentration pulpers, and add them to the hot water reuse system (water in the paper drying cylinder) in the workshop to adjust to 80°C for deinking. Adding hot water The amount is 8 kg per ton of raw material, which is processed by a high-concentration pulper for 25 minutes, cooked and stirred until the degree of beating is reached at 15-20 degrees, and pumped to the pulping workshop by a pulp pump. During the pulping process,...

Embodiment 2

[0040] 1. Raw material preparation and classification:

[0041] Source: waste paper recycling (it can be other waste paper such as office waste paper).

[0042] Classification:

[0043] Waste paper with a whiteness greater than 80 degrees is used as a raw material for dough;

[0044] Waste paper with a whiteness of 70-80 degrees is used as the raw material for lining pulp;

[0045] Waste paper with a whiteness less than 70 degrees is used as core pulp raw material;

[0046] 2. Pulping: Put the three types of raw materials into their respective high-concentration pulpers, and add them to the hot water at 70°C prepared by the workshop hot water reuse system (water accumulated in the paper drying cylinder) for deinking. Adding hot water The amount is 6 kg per ton of raw material, which is processed by a high-concentration pulper for 25 minutes, cooked and stirred until the degree of beating is reached at 15-20 degrees, and pumped to the pulping workshop by a pulp pump. During t...

Embodiment 3

[0056] 1. Raw material preparation and classification:

[0057] Source: waste paper recycling (it can be other waste paper such as office waste paper).

[0058] Classification:

[0059] Waste paper with a whiteness greater than 80 degrees is used as a raw material for dough;

[0060] Waste paper with a whiteness of 70-80 degrees is used as the raw material for lining pulp;

[0061] Waste paper with a whiteness less than 70 degrees is used as core pulp raw material;

[0062] 2. Pulping: Put the three types of raw materials into their respective high-concentration pulpers, and add them to the hot water reuse system (water in the paper drying cylinder) in the workshop to adjust to 90 ℃ for deinking. Adding hot water The amount is 9 kilograms per ton of raw materials, which are processed by a high-concentration pulper for 25 minutes, cooked and stirred until the degree of beating is reached at 15-20 degrees, and pumped to the pulping workshop by a pulp pump. During the pulping...

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PUM

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Abstract

The invention relates to a method for producing environment-friendly white cardboard, and belongs to the technical field of papermaking processes. The method comprises the following steps of: preparing raw materials; crushing; pulping; preliminarily forming; coating; and obtaining a finished product. The method is reasonable in design and easy to operate; and by the method, waste paper raw materials can be better used for producing packing paper with high added value, utilization value is improved, a large amount of native wood or wood pulp for making the white cardboard originally is saved, 3 to 4 cubic meters of wood and 10 to 30 cubic meters of water can be saved when 1 ton of environment-friendly white cardboard is produced, the emission of a large amount of carbon and chemical oxygen demand (COD) can be reduced, production cost can be reduced by over 20 percent, and comprehensive energy consumption is reduced by over 20 percent.

Description

technical field [0001] The invention belongs to the technical field of papermaking technology, and in particular relates to a production method of environmentally friendly white cardboard. Background technique [0002] As a high-end product of coated white paper, the consumption of white cardboard has been rising. However, the white cardboard in the domestic market is mainly imported white cardboard, and most domestic manufacturers use imported wood pulp for production, and its production cost is relatively high. [0003] Therefore, for domestic white cardboard manufacturers, how to improve the quality of their products to meet the requirements of the market and how to reduce the production cost of white cardboard is the key to opening up the domestic market. Contents of the invention [0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to design and provide a technical solution for a production method of environmentally frien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H19/38D21H19/40D21H19/58D21H19/52D21H21/14
Inventor 羊正华羊晓明
Owner FUYANG HUALI PAPER
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