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Device and method for utilizing medium density fiberboard leftover material to produce boxboard

A technology of leftover material and fiberboard, applied in recycling technology, secondary cellulose fiber, paper recycling, etc., can solve the problems of high production cost, achieve the effects of reducing production cost, improving utilization value, and increasing bulk and stiffness

Inactive Publication Date: 2013-04-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the shortage of wood fiber resources, the production cost of my country's pulp and paper industry is very high.

Method used

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  • Device and method for utilizing medium density fiberboard leftover material to produce boxboard
  • Device and method for utilizing medium density fiberboard leftover material to produce boxboard
  • Device and method for utilizing medium density fiberboard leftover material to produce boxboard

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0054] The device and method thereof for producing boxboard paper utilizing medium density fiberboard leftovers are the same as embodiment 1 except for the following features:

[0055] In the step A3, the short fiber stock is concentrated to a concentration of 6%, and the beating degree of the short fiber stock is 30°SR.

[0056] In the step A4, the long-fiber raw pulp is concentrated to a concentration of 6%, and the beating degree of the long-fiber pulp is 25°SR.

[0057] The immersion time of the small pieces of material in the step C in the immersion tank 3 is 3 hours, the content of the basic compound NaOH is 5% of the total weight, and the temperature of the immersion solution is 80°C.

[0058] In the step F, the coarse stock is concentrated to a concentration of 6%, and the beating degree of the pulp is 26°SR.

[0059] The mixing ratio of the short fiber pulp and pulp in the step G is 10:1.5.

[0060] The physical properties of the box board produced according to the ...

Embodiment 3

[0062] The device and method thereof for producing boxboard paper utilizing medium density fiberboard leftovers are the same as embodiment 1 except for the following features:

[0063] In the step A3, the raw short fiber pulp is concentrated to a concentration of 7%, and the beating degree of the short fiber pulp is 30°SR.

[0064] In the step A4, the long-fiber raw pulp is concentrated to a concentration of 7%, and the beating degree of the long-fiber pulp is 28°SR.

[0065] The immersion time of the small pieces of material in the step C in the immersion tank 3 is 3.5 hours, the content of the basic compound NaOH is 4% of the total weight, and the temperature of the immersion solution is 90°C.

[0066] In the step F, the coarse stock is concentrated to a concentration of 7%, and the beating degree of the pulp is 28°SR.

[0067] The mixing ratio of the short fiber pulp and pulp in the step G is 10:2.

[0068] The physical properties of the box board produced according to th...

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Abstract

The invention discloses a device and a method for utilizing medium density fiberboard leftover material to produce boxboard. The method comprises the following steps: carrying out the technologies of breaking, dipping, dredging, deslagging, beating and the like on medium density fiberboard; extracting the wood fiber in the medium density fiberboard; and using the extracted wood fiber as pulping raw material of producing the boxboard. According to the device and the method for utilizing medium density fiberboard leftover material to produce boxboard, the utilization value of the boxboard is reduced, and the economic benefit is improved.

Description

technical field [0001] The invention relates to a production device and method of cardboard paper, in particular to a device and method for producing cardboard paper by using leftovers of medium density fiberboards. Background technique [0002] Medium density fiberboard can be used to make various furniture, doors and windows, lightweight wall panels, fireproof boards and packing boxes, etc., with a wide range of applications. At present, a large amount of leftovers are produced during the process of MDF being processed into various furniture, doors and windows, lightweight wall panels, fireproof boards and packing boxes. These leftovers account for about 5% of the total processed MDF. The production of medium-density fiberboard generally uses wood as raw material. The wood is peeled and sliced ​​into wood chips, and then screened and cleaned, steamed, and hot-milled to become fibers, and then the fibers are glued, dried, paved, hot-pressed, and cooled. Become MDF. And a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/14D21B1/32D21B1/34
CPCY02W30/64
Inventor 雷利荣李友明
Owner SOUTH CHINA UNIV OF TECH