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Preparing method of colourful cellulose membrane

A technology for the preparation of colored cellulose films and films, which is applied in the direction of single-component cellulose rayon, fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of easy fading and color loss of dyed colored cellulose films, and achieve steam saving Consumption, energy saving, uniform and bright colors

Active Publication Date: 2011-08-10
SHANDONG HENGLIAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a preparation method of colored cellulose film. This method uses cotton pulp and wood pulp natural cellulose as raw materials, and directly injects pigments into viscose to produce colored cellulose film. Bright, solves the problem of easy fading and fading of dyed colored cellulose film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) raw material selection process: select weight ratio as 70% cotton pulp and 30% wood pulp for subsequent use;

[0027] (2) described viscose preparation process:

[0028] a. After the selected cotton pulp wood pulp is alkalized, squeezed, aged and yellowed, cellulose xanthate is obtained;

[0029] b. The yellowed cellulose xanthate is dissolved by adding NaOH solution with a concentration of 13g / L. The volume of each batch of cellulose xanthate is 10m 3 , the amount of NaOH solution added is 90kg / ton of paper, the temperature is controlled at 15°C, and viscose is obtained after dissolving. The composition of the viscose is: α-cell 8.2%, NaOH 4.9%, viscosity 52sec, ammonium value 5.6ml, and the rest is water ;

[0030] c. Aging the dissolved viscose, the temperature is controlled at 35°C, and the time is controlled at 7h. The indicators of the viscose after aging are: α-cell 8.5%, NaOH 5.1%, viscosity 49sec, ammonium value 5.5ml;

[0031] d. After the mature viscos...

Embodiment 2

[0042] (1) raw material selection process: select weight ratio as 50% cotton pulp and 50% wood pulp, standby;

[0043] (2) Viscose preparation process:

[0044] a. After the selected cotton pulp wood pulp is alkalized, squeezed, aged and yellowed, cellulose xanthate is obtained;

[0045] b. The yellowed cellulose xanthate is dissolved by adding NaOH solution with a concentration of 12g / L. The volume of each batch of cellulose xanthate is 11m 3 , the amount of NaOH solution added is 95kg / ton of paper, the temperature is controlled at 16°C, and viscose is obtained after dissolving. The composition of the viscose is: α-cell 8.28%, NaOH 5.0%, viscosity 53sec, ammonium value 5.8ml, and the rest is water;

[0046]c. Mature the dissolved viscose, the temperature is controlled at 36°C, and the time is controlled at 7.5h. The indicators of the cured viscose: α-cell 8.58%, NaOH 5.2%, viscosity 51sec, ammonium value 5.6ml;

[0047] d. After the mature viscose is filtered, it enters th...

Embodiment 3

[0058] (1) raw material selection process: select weight ratio as 30% cotton pulp and 70% wood pulp for subsequent use;

[0059] (2) Viscose preparation process:

[0060] a. After the selected cotton pulp wood pulp is alkalized, squeezed, aged and yellowed, cellulose xanthate is obtained;

[0061] b. The yellowed cellulose xanthate is dissolved by adding NaOH solution with a concentration of 12g / L. The volume of each batch of cellulose xanthate is 14m 3 , the amount of NaOH solution added is 90kg / ton of paper, the temperature is controlled at 17°C, and viscose is obtained after dissolving. The composition of the viscose is: α-cell 8.35%, NaOH 5.2%, viscosity 55sec, ammonium value 5.9ml, and the rest is water ;

[0062] c. Aging the dissolved viscose, the temperature is controlled at 37°C, and the time is controlled at 8 hours. The indicators of the cured viscose: α-cell 8.64%, NaOH 5.2%, viscosity 53sec, ammonium value 5.7ml;

[0063] d. After the mature viscose is filtered...

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Abstract

The invention relates to a cellulose membrane and a preparing method thereof, in particular to a colourful cellulose membrane and a preparing method thereof. The method comprises the following steps: selecting raw material, preparing viscose glue, injecting pigment, preparing films, desulphurizing, blenching, plasticizing, drying and humidifying, and a finished product is obtained. The invention adopts cotton pulp and wood pulp as raw materials. Pigment is directly injected into cellulose glue to produce the colourful cellulose membrane; the cellulose membrane has beautiful color and solves the problems of easy discolourization and color loosing of dying colourful cellulose membrane.

Description

technical field [0001] The invention relates to a cellulose film and a preparation method thereof, in particular to a preparation method of a colored cellulose film. Background technique [0002] At present, colorless cellulose films on the market can no longer meet people's requirements, and colored cellulose films have gradually become a trend. At present, all the colored cellulose films produced are directly dyed with dyes after film formation, and the dyed films are easy to fade and fade, causing pollution to the packaging contents. This is also the main reason why the current market and application fields of colored cellulose films are greatly restricted. The reason; at the same time, the dyeing process requires high-temperature heating, which consumes a lot of steam, and there is a waste of energy; in order to ensure that the color of the dyed film is full and bright, the dye concentration is controlled very high, and a large amount of dye is also taken away in the was...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L1/24C08J5/18C08B9/00D01F2/10C08K5/00
Inventor 李瑞丰王新杨同仙许丽丽张文文
Owner SHANDONG HENGLIAN NEW MATERIALS CO LTD
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