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A kind of preparation method of cellulose viscose and its application in cellulose casing

A technology of cellulose viscose and cellulose casing, applied in the field of viscose fiber, can solve the problems of poor elongation at break and dimensional stability, poor dimensional stability and wear resistance, poor elasticity and wear resistance, etc., and achieve water vapor High transmittance, high dimensional stability, and the effect of improving spinnability

Active Publication Date: 2022-07-05
WEIFANG WEISEN FIBER NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cellulose viscose is easy to dye, not easy to generate static electricity, and has good spinnability. It is widely used in various fields such as textiles, clothing, and casings. However, the wet modulus of cellulose viscose is low, and the shrinkage rate is relatively low. Higher, dimensional stability, poor elasticity and wear resistance, easy to fluff, and not resistant to acid and alkali
[0003] Cellulose casings are cellulose viscose made of natural fibers such as cotton linters, sawdust, flax and other plant fibers. Under normal circumstances, it can also be smoked and roasted, but the cellulose casing is inedible, cannot shrink with the meat filling, has dimensional stability, poor elasticity and wear resistance, is easy to fluff, has low water vapor transmission rate, and is not resistant to acid and alkali. Inherent disadvantages limit the promotion and use of cellulose casings
[0004] In the prior art, the dimensional stability, abrasion resistance and acid and alkali resistance of cellulose viscose are mainly improved by surface treatment of cellulose viscose or the use of rich and strong fibers instead of viscose fibers, thereby improving the quality of cellulose casings. However, surface treatment will reduce the toughness and antistatic properties of cellulose viscose, while the high-strength fibers have low elongation at break, poor spinnability, and poor acid resistance; at present, there is no way to ensure the toughness and antistatic properties of cellulose casings. Improve the water vapor transmission rate, wet modulus, dimensional stability, elasticity, abrasion resistance and acid and alkali resistance of cellulose casings
[0005] Patent CN112956518A discloses a method for preparing rapidly smokeable bio-based cellulose casings. The method for preparing rapidly smokeable bio-based cellulose casings includes the following steps: preparation of special viscose for cellulose casings; preparation and addition of cellulose casing; extrusion molding of cellulose casing; slow regeneration of cellulose casing; water washing and desulfurization of cellulose casing; plasticization of cellulose casing; pre-drying, drying and humidity adjustment of cellulose casing; Water-permeable and air-permeable, the special viscose for casings is more stable in molding, ensuring uniform and consistent reactions inside and outside the casing; but the dimensional stability and wear resistance are poor
[0006] Patent CN113647442A discloses a production process of color-transferable biocellulose casings, the production process includes viscose preparation, filtration and defoaming treatment, molding and regeneration reaction, water washing and desulfurization treatment, dyeing and plasticization treatment, pre-drying and Drying treatment, humidity control treatment, coiling treatment, shrinking treatment, packaging and packaging; the prepared cellulose casing can achieve better smoking effect, good moisture retention performance, and better flavor of the fumigated sausage, but the elongation at break and poor dimensional stability

Method used

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  • A kind of preparation method of cellulose viscose and its application in cellulose casing
  • A kind of preparation method of cellulose viscose and its application in cellulose casing
  • A kind of preparation method of cellulose viscose and its application in cellulose casing

Examples

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Effect test

Embodiment 1

[0061] A preparation method of cellulose viscose, specifically:

[0062] 1. Prepare the viscose solution:

[0063] (1) Impregnation: soak the cotton pulp in alkaline solution, control the soaking temperature to 25°C, and soak the soaking time to 2.5h to obtain soaked cotton pulp;

[0064] The degree of polymerization of the cotton pulp is 650, and the content of methyl fiber is 95.5%.

[0065] The weight ratio of the cotton pulp to the lye is 1:1.5;

[0066] The composition of the alkaline solution, in parts by weight, includes: 100 parts of deionized water, 20 parts of sodium hydroxide, 3 parts of potassium phosphate, and 2 parts of aliphatic alcohol polyoxyethylene ether sodium sulfate.

[0067] (2) Pulverization: After the soaked cotton pulp is squeezed out of the lye by the press, it is sent to the pulverizer and pulverized to 100 mesh to obtain the pressed cotton pulp;

[0068] (3) Aging: The cotton pulp after pressing is subjected to aging treatment, the temperature o...

Embodiment 2

[0091] A preparation method of cellulose viscose, specifically:

[0092] 1. Prepare the viscose solution:

[0093] (1) Impregnation: soak the cotton pulp in alkali solution, control the soaking temperature to 30°C, and soak the soaking time to 2.7h to obtain soaked cotton pulp;

[0094] The degree of polymerization of the cotton pulp is 700, and the content of methyl fiber is 96%.

[0095] The weight ratio of the cotton pulp to the lye is 1:1.7;

[0096] The composition of the alkaline solution, in parts by weight, includes: 105 parts of deionized water, 22 parts of sodium hydroxide, 4 parts of potassium phosphate, and 3 parts of aliphatic alcohol polyoxyethylene ether sodium sulfate.

[0097] (2) Pulverization: After the soaked cotton pulp is squeezed out of the lye by the press, it is sent to the pulverizer and pulverized to 110 mesh to obtain the pressed cotton pulp;

[0098] (3) Aging: The cotton pulp after pressing is subjected to aging treatment, the temperature of th...

Embodiment 3

[0121] A preparation method of cellulose viscose, specifically:

[0122] 1. Prepare the viscose solution:

[0123] (1) Impregnation: soak the cotton pulp in the lye solution, control the soaking temperature to 35°C, and soak the soaking time to 3h to obtain the soaked cotton pulp;

[0124] The degree of polymerization of the cotton pulp is 750, and the content of methyl fiber is 97%.

[0125] The weight ratio of the cotton pulp to the lye is 1:1.8;

[0126] The composition of the alkaline solution, in parts by weight, includes: 110 parts of deionized water, 25 parts of sodium hydroxide, 5 parts of potassium phosphate, and 5 parts of fatty alcohol polyoxyethylene ether sodium sulfate.

[0127] (2) Pulverization: After the soaked cotton pulp is squeezed out of the lye by the press, it is sent to the pulverizer and pulverized to 120 mesh to obtain the pressed cotton pulp;

[0128] (3) Aging: The cotton pulp after pressing is subjected to the aging treatment, the temperature of...

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Abstract

The invention discloses a preparation method of cellulose viscose and its application in cellulose casing, belonging to the technical field of viscose fibers. The preparation method of cellulose viscose includes preparing a viscose solution, modifying the viscose solution , spinning and post-processing; the application of the cellulose viscose in the cellulose casing includes weaving, shaping, primary drying, washing and setting, and secondary drying; the present invention can improve the toughness and antistatic properties of the cellulose casing. While improving the spinnability, the water vapor transmission rate, wet modulus, dimensional stability, elasticity, abrasion resistance and acid and alkali resistance of cellulose casing are improved.

Description

technical field [0001] The invention relates to the technical field of viscose fibers, in particular to a preparation method of cellulose viscose and its application in cellulose casings. Background technique [0002] Cellulose viscose is made of natural cellulose such as cotton pulp, wood pulp, bagasse pulp, hemp pulp, bamboo pulp and other natural cellulose as raw materials, and is made into soluble cellulose xanthic acid through alkalization, aging, yellowing and other processes. Ester, redissolved in dilute lye to make viscose, made by wet spinning. Cellulose viscose has the advantages of easy dyeing, not easy to generate static electricity, and good spinnability. It is widely used in various textiles, clothing, casings and other fields. However, the wet modulus of cellulose viscose is low, and the shrinkage rate High, dimensional stability, elasticity and wear resistance are poor, easy to fluff, and not resistant to acid and alkali. [0003] Cellulose casings are cell...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/08D01F11/02C08B1/08C08B9/00A22C13/00
CPCD01F2/08D01F11/02C08B1/08C08B9/00A22C13/0013A22C2013/0096Y02P70/62
Inventor 李仁家董正祥徐义帆刘尧马天忠孔凡功于庆雪马后文
Owner WEIFANG WEISEN FIBER NEW MATERIAL CO LTD
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