Water-absorbing material

 

(57) Abstract:

Water-absorbing material refers to the materials for sanitary purposes. The material is made of non-oriented fibers of the flax cottonin with up to 50% nepradami fibers, and structural fibrous filler from cotton or viscose, or hemp, or Mylar fibers, or mixtures thereof, at a mass ratio of flax cottonin and structuring of the filler is equal to(90 - 10) : (10 - 90). The material used refined fibers with an average length of 30-70 mm, the Invention allows to expand the range of desiccant materials with improved absorbent properties and giving the possible traumas. 1 Il., table 1.

The invention relates to the textile industry and relates to a fibrous textile materials based on cellulose fibers.

In the processing of flax trusts in the processes of primary and secondary treatment receive a very large amount of waste is heterogeneous in length, but strong fibers, which must be used correctly, and, primarily, in the field of textile industry, which is especially important in our time, in a moment of extreme tension is delineated on the basis of flax fibers are the basic raw materials as non-woven base in the manufacture of artificial leather, in the manufacture of garments as insulation, but on the basis of treated flax fibres for the production of cotton-gauze products.

Known fibrous base for nonwoven fabric consisting of fibers laid neuorientierung relative to each other. As fibers using low-grade short flax fiber, obtained at the enterprises of primary processing and waste flax-percocetbuy industry: tow, vitrase the strays. This fibrous material is produced batting for clothing and fur industry, the lining for heat and sound insulation linoleum, vibration and sound absorbing lining materials for the automotive industry (Markov centuries, Primary processing of flax and other bast plants. -M.:, Light and food industries, 1981, S. 337-339).

However, the known fibrous base is used mainly for industrial goods and it cannot be used for products sanitary purposes due to the nature of the water-absorbing properties and technical specifications.

Known material in the form of sanitary ware, which consists of cotton or synthetic fiber iwaski fresh wounds. To increase the hygroscopic properties of the proposed material contains the specific hydrophilic polymer (FR, 2140323 A, 19.01.73).

However, the known material has no microbiological activity and has a low atraumatic and compatibility with living tissues of the body, and therefore does not create comfort in conditions of products.

The closest analogue of the invention is a water-absorbing material, made on the basis of unoriented fibers, representing linen cottonin and associated with the structure of the fibrous filler (Kukharev M. S. and others, the Use of flax fibre in the sectors of textile industry. The textile industry, 1997, No. 3, S. 14-17).

The task of the invention to provide water-absorbing material to ensure the achievement of the technical result consists in the expansion of the range with improved absorbent properties and make possible traumas.

This technical result in the water-absorbing material, made on the basis of unoriented fibers, representing linen cottonin and associated with fibrous structure is Kristy filler consists of cotton or viscose, or Mylar, or hemp fibers, or their mixture at a mass ratio of flax cottonin and structuring of fibrous filler, equal(90 - 10) : (10 - 90), and used refined fibers with an average length of 30 - 70 mm

In the proposed material used fibers with an average length of 30 to 70 mm, refined chemical, physico-chemical, biological, and mechanical methods.

Flax cottonin is a short fiber or tow, or their mixture with an average length of from 30 to 70 mm, with up to 50% nepradami fibers.

As the structure of the fibrous filler used: cotton fiber absorption capacity of not less than 18 g/g and a length of from 20 to 60 mm, viscose fiber tortuosity of at least 2 svetcov 1 cm and a length cut from 30 to 70 mm, hemp fiber cutting length from 30 to 70 mm and a speed of wetting to 7 seconds, Mylar fiber cutting length from 30 to 70 mm and a tortuosity of at least 2 svetcov 1 see

The drawing shows absorption spectra of short flax - severe (1), improved (2).

Studies have shown that the surface flax is a large number recellular components is separated by a large number of carboxyl groups (band near 1740 cm-1) related to the lignin (the bands at 1630 and 1510 cm-1), and the structure of such a product is not a capillary-porous structure, and is thin enough to retain water porous system. Refined linseed cottonin contains 2-3 times fewer carboxyl groups related to lignin (see drawing).

Hydrophobic Mylar fiber also has a carboxyl group (band near 1740 cm-1), but these groups do not belong to the lignin, which allows to structure water-absorbing material in such a way that even the addition of 10% Mylar fiber provides high capillarity and adsorption capacity. Hemp fiber has no carboxyl groups of the lignin, and viscose and cotton fibers do not have the lignin. These fibers allow you to create the structure of the water-absorbing material, which provides high vlagopoglotiteli capacity, capillarity and speed of wetting, and by basics - flax cottonin high water-holding capacity and atraumatic. (Atraumatic is a property of the material does not stick to the wound surface). In addition, it was found that refined linseed cottonin JV is econovan wounds.

Refined linseed cottonin and structuring fibrous filler of these fibers form a solid structure related samoszhimayuschihsya fibers with a developed surface, where there is migration of the fibers, and the system works as a whole.

Proposed water-absorbing material is made based on the following technologies:

Ennobled, for example, chemical, physico-chemically, mechanically, biologically linen cottonin average length of from 30 to 70 mm and with up to 50% nepradami fibers are combined by mixing with the structure of the fibrous filler (hereinafter CB filler) in the form of cotton or viscose, or hemp, or Mylar fibers, or mixtures thereof in a ratio equal to(90 - 10) : (10 - 90), on scutching machine, for example, type TM-2, then the semi-finished combing on a carding machine, for example, type TM-2, then the semi-finished combing on a carding machine, for example, type CVM-600 with randomizers device, the result is non-water-absorbing material in the form of fibrous lap with undirected arrangement of fibres.

Specific examples and the test results of the proposed material is presented in acteri) is determined according to the method GFH, 1990, pp. 193-200.

Moisture absorption in units of g/g determined according to GOST 5556-81.

The rate of wetting (in fact, the time wetting) in seconds is determined according to GOST 9412-77.

The capillarity on the lifting height of colored water in the tube filled with water-absorbing material, in mm according to GOST 5556-81.

As can be seen from the table, the proposed water-absorbing material has, in comparison with the prototype, high hygroscopic properties due to increased absorption of up to 26-28 g/g, capillarity to 94-98 mm, speed wettability to 1-3 seconds instead of 10 seconds on international standards, as well as a completely new and unique properties and microbiological activity and atraumatic.

This water-absorbing material is a new material for sanitary purposes with an adjustable range of properties aimed at the use of the unique features of flax fiber.

The proposed material allows you to create a new generation of dressing materials based on the use of nonwovens, cotton products for sanitary purposes.

Water-absorbing material is made on the basis periodonitis filler, characterized in that linen cottonin contains up to 50% nepadomaja fiber, and structural fibrous filler consists of cotton or viscose, or hemp, or Mylar fibers, or their mixture at a mass ratio of flax cottonin and structuring of fibrous filler, equal(90 - 10) : (10 - 90), and used refined fibers with an average length of 30 - 70 mm

 

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FIELD: medicine, hygiene.

SUBSTANCE: the suggested product contains the mixture out of thermoplastic hydrophobic and absorbing fibers. Absorbing fibers are present in the quantity being sufficient to efficiently absorb liquid from external surface of combined covering and transmitting layer at no competition with absorbing middle layer to provide quick penetration of liquid at minimal reverse wetting.

EFFECT: higher efficiency.

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