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Preparing method of cellulose membrane specially used by high-whiteness adhesive tape

A cellulose film, high whiteness technology, applied in the direction of single-component cellulose rayon, fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of difficult to improve whiteness, poor whiteness, high quantitative, etc., to achieve good Elongation and tensile strength, easy operation, and simple method

Active Publication Date: 2010-02-17
SHANDONG HENGLIAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the regenerated cellulose film specially used for adhesive tape produced in China is far from meeting the requirements of the market in terms of appearance quality, especially the international market.
[0003] At present, the production technology of cellulose film for adhesive tape on the market is the traditional cellulose film production technology. The whiteness of the cellulose film for adhesive tape produced is generally about 60-70%, and the whiteness is poor, resulting in the finished cellulose tape after sizing. The color is dark yellow, which directly affects the appearance quality after packaging. At the same time, due to the high weight of cellulose film for adhesive tape, it is difficult to improve the whiteness of this product using traditional technology. Therefore, the sales and application of cellulose film for adhesive tape are greatly affected. Large restrictions, especially limit the application of cellulose film tape in the field of high-end packaging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) raw material selection process: select weight ratio as 30% cotton pulp and 70% wood pulp;

[0031] (2) Viscose preparation process:

[0032] a. After the selected wood pulp cotton pulp is alkalized, squeezed, aged and yellowed, cellulose xanthate is obtained;

[0033] b. Add the 9g / L NaOH solution to the yellowed cellulose xanthate, and dissolve it. The volume of each batch of cellulose xanthate is 13m 3 , the amount of NaOH solution added is 115kg / ton of paper, the temperature is controlled at 17°C, and viscose is obtained after dissolving. The composition of the viscose is: α-cell 8.4%, NaOH 5.2%, viscosity 52sec, ammonium value 6.0ml, and the rest is water ;

[0034] 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 are: α-cell 8.7%, NaOH 5.4%, viscosity 47sec, ammonium value 5.5ml;

[0035] d. After the aged viscose is filtered, it enters the defoaming tower. The t...

Embodiment 2

[0046] (1) raw material selection process: select weight ratio as 35% cotton pulp and 65% wood pulp;

[0047] (2) Viscose preparation process:

[0048] a. After the selected wood pulp cotton pulp is alkalized, squeezed, aged and yellowed, cellulose xanthate is obtained;

[0049] b. Add 10g / L NaOH solution to the yellowed cellulose xanthate to dissolve it. The volume of each batch of cellulose xanthate is 12m 3 , the amount of NaOH solution added is 110kg / ton of paper, the temperature is controlled at 18°C, and viscose is obtained after dissolving. The composition of the viscose is: α-cell 8.45%, NaOH 5.3%, viscosity 51sec, ammonium value 6.2ml, and the rest is water ;

[0050] c. Aging the dissolved viscose, the temperature is controlled at 38°C, and the time is controlled at 8.2h. The indicators of the viscose after aging are: α-cell 8.6%, NaOH 5.35%, viscosity 49sec, ammonium value 5.8ml;

[0051] d. After the aged viscose is filtered, it enters the defoaming tower. The tem...

Embodiment 3

[0062] (1) raw material selection process: select weight ratio as 40% cotton pulp and 60% wood pulp;

[0063] (2) Viscose preparation process:

[0064] a. After the selected cotton pulp wood pulp is alkalized, squeezed, aged and yellowed, cellulose xanthate is obtained;

[0065] b. Add 12g / L NaOH solution to the yellowed cellulose xanthate to dissolve it. The volume of each batch of cellulose xanthate is 13m 3 , the amount of NaOH solution added is 120kg / ton of paper, the temperature is controlled at 19°C, and viscose is obtained after dissolving. The composition of the viscose is: α-cell 8.6%, NaOH 5.4%, viscosity 56sec, ammonium value 6.5ml, and the rest is water ;

[0066] c. Mature the dissolved viscose, the temperature is controlled at 39°C, and the time is controlled at 8.5h. The indicators of the cured viscose: α-cell 8.75%, NaOH 5.45%, viscosity 51sec, ammonium value 5.8ml;

[0067] d. After the matured viscose is filtered, it enters the defoaming tower. The tempera...

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Abstract

The invention relates to a cellulose membrane and a preparing method thereof, in particular to a cellulose membrane specially used by high-whiteness adhesive tape and a preparing method thereof. The method comprises the following steps: selecting raw material, preparing viscose glue, injecting brightening agent, preparing films, desulphurizing, blenching, plasticizing, drying and humidifying; thena finished product is obtained; the finished product adopts cotton pulp and wood pulp as raw materials; in practical application, the cellulose membrane has the advantages of high whiteness, favourable strength and toughness, strong glue adhering ability, easy tearing, no static electricity, no pollution and favourable elongation and tensile strength, can adapt to automatic high-speed packaging,and can achieve the performance requirements of environment protection and beauty of packaged objects.

Description

technical field [0001] The invention relates to a preparation method of a cellulose film, in particular to a preparation method of a special cellulose film for high-whiteness tapes. Background technique [0002] At present, transparent adhesive tapes such as ordinary BOPP and other substrates can no longer meet people's environmental protection requirements. The special cellulose film for adhesive tapes that adapt to modern high-speed automatic packaging, can be naturally degraded and anti-static has gradually become the international market demand. The demand for degradable, resource-saving, and easy-to-tear packaging materials continues to increase. The regenerated cellulose film for tapes is rapidly used in the packaging industry due to its unique energy-saving and environmental protection properties. At the same time, people have higher and higher requirements for it, such as whiteness, strength, toughness, etc., especially stricter requirements for appearance quality su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L1/24C08B9/00D01F2/10C08K5/03
Inventor 李瑞丰高玉刚张晓煜王新陈玉苹
Owner SHANDONG HENGLIAN NEW MATERIALS CO LTD
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