RU2078163C1 - Method for production of cotton wool - Google Patents

Abstract

FIELD: textile industry. SUBSTANCE: flaxen fiber is subjected to chemical treatment, opening, drying, picking, carding. Before and after chemical finishing, fiber is additionally discredited to linear density of 0.3-0.4 tex, and flaxen fiber is used in form of combings or short fiber. EFFECT: extended assortment of raw material, higher efficiency of the method due to exclusion of downtime. 2 cl, 1 tbl

Description

 The invention relates to the textile industry and can be used for the production of cellulose wool.

 Scientific and technological progress in the textile industry is carried out by improving and intensifying technological processes. An effective tool is the use of cheap materials, namely bast fibers, as a raw material for the development of the cotton industry, which frees it from the import of foreign cotton and can dramatically increase the production of cotton wool.

 A known method of manufacturing a roll of cotton filling in the form of a multilayer web containing waste cotton-spinning production, parts by weight nut and fluff trepidine N3, N3a-40; nutlet and down carding N7, N7a-25; tow tow card N10, N11-20; nut and fluff trembling and scratching N4, N8-5; fluff-paspyl and fluff N9, N7-10. These wastes are loosened, cleaned of weedy impurities on a baking machine, mixed, scratched and a comb of cotton is laid in layers in the form of a multilayer cotton web, which is wound onto a rolling pin in a roll (ed. St. USSR N 1532622, class D 04 H 1 / 02).

 The disadvantages of this method are the impossibility of its implementation due to the absence of waste cotton-spinning production and obtaining low-grade wool.

 Closest to the invention in technical essence is a method of producing cotton wool from cotton fiber, including cleaning, chemical refinement, loosening, drying to a moisture content of 12-17 rubbing, scratching. Flow chart of production of medical hygroscopic cotton wool. Approved by Ch. the engineer of Klepikovsky cotton union V.R. Vaneev 02/19/93 gos. registration N 81024767, M. 1993).

 The disadvantage of this method is the limited use of raw materials, simple equipment due to lack of raw materials and the high energy intensity of the process.

 The objective of the invention is the creation of a method for the production of cotton wool, which ensures the achievement of a technical result consisting in expanding the range of raw materials and obtaining the physicochemical properties of high-quality cotton wool from special linen fiber on cotton equipment, increasing efficiency by eliminating equipment downtime.

 This technical result in a method of producing cotton wool, including cleaning cellulose fiber, chemical refinement, loosening, drying, scuffing, scratching, is achieved by using flax fiber as cellulose fiber, and after and before chemical refinement of the fiber, it is further pulled to linear density equal to 0.3-0.4 tex, flax fiber is used in the form of tow or short fiber.

 Examples 1-15. The manufacture of cotton wool by the proposed method is carried out according to the following technology.

The raw material for the production of cotton wool is flax fiber (short, tow - waste of flax production), which is cleaned by processing on baking and cleaning units in the preparatory department and subjected to razvolka on carding machines to a single fiber thickness of 0.3-0.4 tex. Then fiber dispersion is chemically ennobled. It is loaded into the boiler and boiled in an aqueous solution containing g / l: caustic soda 7.2; soda ash 1.2; Laundry soap 60 0.4; wetting agent 0.1. The fiber is boiled in the boiler at a temperature of 130-140 ^o C and a pressure of 3-4 bar. within 180-210 minutes After which the fiber is discharged, acidified, washed and bleached with a composition containing 4.0 g / l of sulfuric acid, 2.8 g / l of sodium hypochlorite (counting as active chlorine), acidified, washed in a rake-type washing machine, squeezed up to 120 on calendars -130 humidity.

 Further, the lead is carried out on carding machines to a linear density of 0.3-0.4 tex. Loosening on a PM-240-02 wet fiber cultivator, drying to a moisture content of 12-17, beating on the TB-2 and TB-3 scraper machines, scratching on the ChVPI-600 brand carding machines to a single fiber thickness of 0.15-0.2 Tex.

 The invention is illustrated by specific examples and test results of cotton wool obtained by the proposed method and the prototype method presented in the table.

 The proposed method provides the production of cotton wool from flax fiber according to the physicochemical properties not inferior to the resulting cotton wool from cotton fiber.

The data in the table show that the production of cotton wool according to the proposed method in comparison with the prototype allows to obtain high-quality cotton wool due to whiteness 75 moisture absorption of 25 g / g cotton wool, fiber length in cotton wool 25 mm, the fat and ash content does not exceed 0.3
The production of bast fiber cotton on cotton equipment eliminates the downtime of the equipment and expands the range of raw materials for the production of cotton wool.

Claims (2)

 1. The method of production of cotton wool, including cleaning cellulose fiber, chemical enrichment, loosening, drying, scuffing, scratching, characterized in that the quality of the cellulose fiber is flax fiber and, after and before chemical enrichment of the fiber, it is further pulled to a linear density of 0.3 0.4 tex.  2. The method according to claim 1, characterized in that the flax fiber is used in the form of tow or short fiber.

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