Method for manufacturing half-dry mold-pressed honeycomb carboards

A technology of honeycomb paperboard and manufacturing method, which is applied in the direction of special paper, chemical instruments and methods, paper/cardboard layered products, etc., can solve the problems of energy consumption and water consumption, and achieve the effect of strong pressure resistance and light weight

Inactive Publication Date: 2011-06-29
TIANJIN MINGTANG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Apparently, there are practical problems of water consumption and energy consumption in the process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1:

[0016] (1) Preparation of starch glue: 46 kg of corn starch, adding 92 kg of water, and heating while stirring, the weight ratio of corn starch to water is 1:2, and the heating temperature is 35-40°C. After the corn starch is evenly hydrated, 4.6 kg of hydrogen peroxide is added for oxidation reaction, and the weight ratio of corn starch to hydrogen peroxide is 1:0.1. The reaction time can be 40-60 minutes. After the oxidation reaction, add 18.4 kg of the gelatinizing agent sodium hydroxide aqueous solution under stirring, the weight ratio of sodium hydroxide to water is 1:2, the weight ratio of corn starch to sodium hydroxide aqueous solution is 1:0.4, and the gelatinization temperature is 45 ℃, gelatinization time is 30 minutes.

[0017] Add 2.07 kg of the complexing agent borax aqueous solution under stirring, the weight ratio of borax to water is 1:4, the weight ratio of corn starch to borax aqueous solution is 1:0.045, the complexing temperature is 56°C, ...

Example Embodiment

[0021] Example 2:

[0022] (1) Preparation of starch glue: 46 kg of corn starch and 101.2 kg of water are heated while stirring, the weight ratio of corn starch to water is 1:2.2, and the heating temperature is 35-40°C. After the corn starch is uniformly hydrated, 5.52 kg of hydrogen peroxide is added for oxidation reaction, the weight ratio of corn starch to hydrogen peroxide is 1:0.12, and the reaction time can be 40-60 minutes. After the oxidation reaction, add 23kg of the gelatinizing agent sodium hydroxide aqueous solution under stirring, the weight ratio of sodium hydroxide to water is 1:2.5, the weight ratio of corn starch to sodium hydroxide aqueous solution is 1:0.5, and the gelatinization temperature is 45℃ , Gelatinization time is 30 minutes.

[0023] Add 2.3 kg of the complexing agent borax aqueous solution under stirring, the weight ratio of corn starch to borax aqueous solution is 1:0.05, the weight ratio of borax to water is 1:4, the complexing temperature is 56°C, ...

Example Embodiment

[0028] Example 3:

[0029] (1) The preparation of starch gum is the same as in Example 2.

[0030] (2) Preparation of mixed slurry; 600kg of rice straw or wheat straw, 200kg of waste cardboard paper and 100 kg of waste textiles are processed into velvet-like fibers, straw or wheat straw and waste cardboard and waste textiles by a DFDJ large taper mill. The weight ratio is 1:0.5, and the weight ratio of waste cardboard paper to waste textiles is not limited. Then, the above-mentioned fibers are mixed and processed by a DFH high-consistency refiner and a DF multifunctional high-efficiency refiner into a base pulp of 1800 kg, with a base pulp concentration of 50%.

[0031] Put the base pulp into the kneader, add 1800kg of starch glue, 18-90kg of flame retardant, and 18-180kg of filler into the base pulp and mix uniformly to obtain a mixed slurry. The weight ratio of base slurry to starch glue is 1:1, the weight ratio of base slurry to flame retardant is 1:0.01-0.05, and the weight rat...

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PUM

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Abstract

The invention discloses a method for manufacturing half-dry mold-pressed honeycomb carboards, which comprises the following steps of: (1) preparing starch glue; (2) preparing mixed pulp; and (3) processing honeycomb carboards. In the method for manufacturing the half-dry mold-pressed honeycomb carboards, waste carboard paper, agricultural stalks, waste textiles and the like can be recycled. In the manufacturing method, the total solid content in the mixed pulp is about 50 percent; compared with a wet processing method, the method has the characteristics of energy conservation and water conservation; and compared with a thermosetting processing method, the method has the characteristics of no aldehydes, zero emission, no toxin, no pollution and the like. The honeycomb carboards processed by the method have the characteristics of light weight, strong compressive resistance, waterproofness, moistureproofness, rot resistance, anti-mildew, anti-moth, and fumigation-free moth removal, have excellent processability such as capacity of being sawed, nailed and glued and the like, and can be widely applied to products such as heavy duty pallets, heavy duty packing boxes, light walls, decorative boards, furniture and the like.

Description

technical field [0001] The invention belongs to the molding process of pulp molded honeycomb paperboard, in particular to a manufacturing method of semi-dry molded honeycomb paperboard. Background technique [0002] The invention patent application of application number 2007100556856.6 "A device for continuous honeycomb molding of wet-processed pulp molded honeycomb panels and its special mold" essentially discloses a process method for wet-processed pulp molded honeycomb panels. In this process, the concentration of the raw material pulp is only 5%, and it is dehydrated by gravity, extrusion, vacuum, and compression to become concentrated pulp with a concentration of 50%±5 that can be processed. Obviously, there are practical problems of water consumption and energy consumption in the process of wet processing pulp molded honeycomb panels disclosed in the above patent application for invention. Contents of the invention [0003] The purpose of the present invention is to...

Claims

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Application Information

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IPC IPC(8): D21H27/40B32B29/00
Inventor 刘建范维金柏涛
Owner TIANJIN MINGTANG ENVIRONMENTAL PROTECTION TECH
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