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

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...

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

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