Production method of colorful natural cellulose membranes

A technology of natural cellulose and production method, which is applied in the production field of colored natural cellulose film, can solve the problems of easy fading and unstable color, and achieve the effects of good transparency, saving heating steam, and small difference between thickness and width

Inactive Publication Date: 2016-06-22
SHAOXING CHUNMING NATURAL CELLULOSE MEMBRANE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because its color is obtained by dyeing, there ar

Method used

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  • Production method of colorful natural cellulose membranes
  • Production method of colorful natural cellulose membranes
  • Production method of colorful natural cellulose membranes

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Experimental program
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Embodiment Construction

[0048] The production method of colored natural cellulose film comprises the steps:

[0049] a, the preparation of cellulose viscose

[0050] (1) Impregnation of cellulose

[0051] Pulp (cotton pulp, wood pulp mixed in proportion) is put into the sodium hydroxide aqueous solution of percentage concentration 15%~18%, soaks for 10 minutes~20 minutes at 55 ℃~65 ℃, obtains the alkali cellulose dipping solution;

[0052] (2) Squeeze of alkali cellulose

[0053] Squeeze and separate excess lye in the soaking liquid to obtain pressed alkali cellulose;

[0054] (3) Grinding of alkali cellulose

[0055] crushing the pressed alkali cellulose to obtain the crushed alkali cellulose;

[0056] (4) The aging of alkali cellulose

[0057] Aging the crushed alkali cellulose at 55°C to 80°C for 2 hours to 4 hours to obtain aged alkali cellulose;

[0058] (5) Yellowing of alkali cellulose

[0059] Soak the aged alkali cellulose in an aqueous sodium hydroxide solution with a mass percentag...

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Abstract

The invention discloses a production method of colorful natural cellulose membranes. The production method comprises the steps of cellulose dipping, alkali cellulose squeezing, alkali cellulose smashing, alkali cellulose aging, alkali cellulose yellowing, cellulose sulphonate dissolving, color paste type selecting and matching, coloring viscose preparing, viscose film forming after coloring, sulfur removing, bleaching, softness improving and drying. According to the method, the reaction condition is mild, viscose with different properties can be colored, the difference between widths of the colorful natural cellulose membranes is small, elongation and the tensile strength are stable, and the membranes have the advantages of having suitable stiffness and softness and good color and transparency, being high in hygiene level, and resisting and inhibiting the bacteria.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to a production method of a colored natural cellulose film. Background technique [0002] Natural cellulose film has excellent properties such as environmental protection and non-toxicity. Coloring natural cellulose film makes cellulose film enter a colorful world. The products are widely used in fireworks and firecrackers, Buddhist incense candles, medicine and food, stationery and entertainment products, Dry batteries, printing and other fields. But the common coloring natural cellulose film, its coloring process is generally to directly dye it through a certain dye concentration tank, and then form after washing, softening and drying. Since its color is obtained by dyeing, there are problems such as unstable color and easy fading. Contents of the invention [0003] The invention provides a production method of a colored natural cellulose film that is easy to control and has ...

Claims

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Application Information

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IPC IPC(8): D06M11/38D06L1/12D06M13/148D06M13/165D06M15/53D04H1/28D01F2/16D01D1/02D06M101/06
Inventor 宣锋
Owner SHAOXING CHUNMING NATURAL CELLULOSE MEMBRANE CO LTD
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