High-strength flame-retarding kraft board paper, preparation method and application thereof

A kraft box, high-strength technology, applied in special paper, chemical instruments and methods, paper, etc., can solve the problems of easy delamination of finished paper, poor bonding strength between layers, and large bonding force, so as to improve the strength and expand the use. range, the effect of improving the flame retardant effect

Inactive Publication Date: 2016-06-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing kraft linerboards on the market cannot meet this requirement.
[0003] The traditional kraft liner paper is formed by using multi-layer nets separately, and then the multi-layers are combined together to produce it. Therefore,...

Method used

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  • High-strength flame-retarding kraft board paper, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Prepare a starch solution with a mass fraction of 5%, and gelatinize it for 1 hour at a temperature of 90° C. and a stirring speed of 400 r / min. Then dilute to a solution with a mass fraction of 1%.

[0026] (2) The ammonium polyphosphate solution with a mass fraction of 5% is prepared, and the ammonium polyphosphate solution is mixed with the solution with a mass fraction of 1 to 5% prepared in step (1) in a volume ratio of 1:1 to form a combined A solution for flame retardant effect and enhanced effect.

[0027] (3) Add aluminum hydroxide to the pulp in the form of additional filling during the production of container board, and make paper together with the pulp. The amount of aluminum hydroxide added is 5% of the absolute dry mass of the pulp.

[0028] (4) before the surface layer, the core layer and the bottom layer of the cardboard paper are combined, spray the mixed solution in one deck step (2) on the surface of each layer, and the consumption is 2% of the a...

Embodiment 2

[0030] (1) Prepare a starch solution with a mass fraction of 8%, and gelatinize it for 2 hours at a temperature of 95° C. and a stirring speed of 600 r / min. Then dilute to a solution with a mass fraction of 2%.

[0031] (2) The ammonium polyphosphate solution with a mass fraction of 7% is prepared, and the ammonium polyphosphate solution and the solution with a mass fraction of 1 to 5% prepared in step (1) are mixed in a volume ratio of 1:1 to form a combined A solution for flame retardant effect and enhanced effect.

[0032] (3) Add aluminum hydroxide to the pulp in the form of additional filling during the production of container board, and make paper together with the pulp. The amount of aluminum hydroxide added is 7% of the absolute dry mass of the pulp.

[0033] (4) before the surface layer, the core layer and the bottom layer of the cardboard paper are combined, spray the mixed solution in one deck step (2) on the surface of each layer, and the consumption is 4% of the ...

Embodiment 3

[0035] (1) Prepare a starch solution with a mass fraction of 10%, and gelatinize it for 3 hours at a temperature of 95° C. and a stirring speed of 700 r / min. Then dilute to a solution with a mass fraction of 4%.

[0036] (2) Prepare an ammonium polyphosphate solution with a mass fraction of 8%, mix the ammonium polyphosphate solution with the solution with a mass fraction of 1 to 5% prepared in step (1) at a volume ratio of 1:1, and mix the ammonium polyphosphate solution with both A solution for flame retardant effect and enhanced effect.

[0037] (3) Add aluminum hydroxide to the pulp in the form of additional filling during the production of container board, and make paper together with the pulp. The amount of aluminum hydroxide added is 8% of the absolute dry mass of the pulp.

[0038] (4) before the surface layer, the core layer and the bottom layer of the cardboard paper are combined, spray the mixed solution in one deck step (2) on the surface of each layer, and the co...

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Abstract

The invention belongs to the technical field of special paper preparation and particularly relates to high-strength flame-retarding kraft board paper, a preparation method and an application thereof. The preparation method includes the steps of: filling a surface layer, a core layer and a bottom layer of the kraft board paper with aluminum hydroxide; spraying the surface layer, the core layer and the bottom layer of the kraft board paper with starch and ammonium polyphosphate; after the surface layer, the core layer and the bottom layer are laminated, spraying the surface of the kraft board paper with the ammonium polyphosphate. In the high-strength kraft board paper, each layer is not only sprayed with the starch but also sprayed with the ammonium polyphosphate and filled with the aluminum hydroxide, so that the kraft board paper has excellent reinforcing and flame-retarding effects, has excellent physical and fire-proof performance and can be used in the various fields such as packaging and the like well.

Description

technical field [0001] The invention belongs to the technical field of special paper preparation, and in particular relates to a high-strength flame-retardant kraft liner board and its preparation method and application. Background technique [0002] Kraft linerboard is one of the main packaging papers, mainly used for packaging household appliances, daily necessities, knitted cotton fabrics, stationery, Chinese and Western patent medicines, etc. For the fire safety of the products, these packaged products require high flame retardancy of kraft liner paper. However, most of the existing kraft linerboards on the market cannot meet this requirement. [0003] The traditional kraft liner paper is formed by using multi-layer nets separately, and then the multi-layers are combined together to produce it. Therefore, the bonding force between the layers of the kraft liner paper is often not as strong as that between the fiber layers. , resulting in poor bonding strength between la...

Claims

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Application Information

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IPC IPC(8): D21H27/10D21H27/30D21H17/28D21H17/66D21H17/64D21H21/18D21H21/34B32B29/00B32B33/00B32B37/00B32B37/24
CPCD21H27/10B32B29/005B32B37/00B32B37/24B32B2037/243B32B2250/03B32B2255/12B32B2255/20B32B2255/26B32B2307/3065D21H17/28D21H17/64D21H17/66D21H17/74D21H21/18D21H21/34D21H27/30
Inventor 杨飞张杨冯郁成
Owner SOUTH CHINA UNIV OF TECH
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