RU2191856C1 - Nonwoven material for medicinal short-time usage articles - Google Patents

Abstract

FIELD: medicine. SUBSTANCE: nonwoven material comprises fiber mixture containing natural, artificial and synthetic fibers bound one with another through hydraulic flow treatment procedure. Mixture contains 5-50 wt.% of natural fibers, for example linen fibers, 5-95 wt.% of artificial fibers such as viscose fibers, and 0-10 wt.% of synthetic fibers such as polyester fibers. Surface density of material is within the range of 45-100 g/sq.m. EFFECT: improved hygienic properties of material. 4 cl, 5 ex

Description

FIELD OF THE INVENTION
The invention relates to non-woven materials used for the manufacture of medical non-durable products, such as sets of obstetric and gynecological underwear, including shirts, caps, shoe covers, bedding and other products for patients, as well as absorbent wipes, towels, etc.

State of the art
Known textile material for protective medical clothing for short-term use, including non-woven material from a mixture of natural, artificial and synthetic fibers, bonded to each other and with a duplicate mesh through hydro-jet processing. This material is described in patent RF 2159825 for CL. IPC ⁷ D 04 H 1/44, A 41 D 31/00, publ. 11/27/2000

 With increased strength, the material is suitable for the manufacture of protective clothing for short-term use. The relatively high content of synthetic fibers reduces the hygiene of the material, which, combined with the increased cost, limits its use for the manufacture of medical devices that are in direct contact with human skin.

SUMMARY OF THE INVENTION
The objective of the invention is the creation of a non-woven material with high hygienic properties (absorption capacity, capillarity, breathability, softness), suitable for the manufacture of various medical products from it. This problem is solved due to the fact that in a nonwoven material, including a fibrous mixture containing natural, artificial and synthetic fibers, the fiber mixture contains flax fibers in an amount of 5 to 50 wt.% As natural fibers, and viscose fibers as artificial fibers in an amount of from 50 to 95 wt.%, as synthetic - polyester fibers in an amount of from 0 to 10 wt.%.

 As flax, the fibrous mixture may contain physically chemically modified flax fibers.

 Preferably, the fibrous mixture contains bleached flax fiber.

 Preferably, the fibrous mixture contains bleached viscose fibers.

Information confirming the possibility of carrying out the invention
The proposed material is made as follows: a fiber layer formed by a known method, consisting of a mixture of fibers, is placed on a perforated conveyor and treated on both sides with continuous high-pressure jets of water supplied through a die head, reciprocating across the canvas.

 Example 1

 A fiber mixture was prepared from 40 wt.% Flax modified fibers with a linear density of 0.2 tex, a length of 35-40 mm, 50 wt.% Viscose fibers with a linear density of 0.31 tex, a length of 65 mm and 10 wt.% Polyester fibers with a linear density of 0 33 tex, 66 mm long. The fiber mixture was fastened as described above.

Received material with a surface density of 100 g / m ² . The absorption capacity of the nonwoven fabric is 12.5 g / g, stiffness is 0.52 gs, capillarity is 139 mm, air permeability is 1135 dm ³ / m ² • s.

 The material is suitable for the manufacture of bedding for patients.

 Example 2

 A fiber mixture was prepared from 5 wt.% Flax modified fibers with a linear density of 0.2 tex, a length of 35-40 mm and 95 wt.% Viscose fibers with a linear density of 0.31 tex, a length of 65 mm. The fiber mixture was fastened as described above.

Received material with a surface density of 45 g / m ² . The absorption capacity of the nonwoven fabric is 12 g / g, stiffness 0.65 gs, capillarity 150 mm, air permeability 1421 dm ³ / m ² • s.

 The material is suitable for the manufacture of caps for patients.

 Example 3

 A fiber mixture was prepared from 40 wt.% Flax modified fibers with a linear density of 0.2 tex, length 35-40 mm and 60 wt.% Viscose fibers with a linear density of 0.31 tex, length 65 mm. The fiber mixture was fastened as described above.

Received material with a surface density of 80 g / m ² . The absorptive capacity of the nonwoven fabric is 13 g / g, stiffness 0.65 gs, capillarity 165 mm, air permeability 1235 dm ³ / m ² • s.

 The material is suitable for the manufacture of shirts for patients.

 Example 4

 A fiber mixture was prepared from 50 wt.% Flax modified fibers with a linear density of 0.2 tex, a length of 35-40 mm and 50 wt.% Viscose fibers with a linear density of 0.31 tex, a length of 65 mm. The fiber mixture was fastened as described above.

Received material with a surface density of 60 g / m ² . The absorption capacity of the nonwoven fabric is 12.5 g / g, stiffness 0.72 gs, capillarity 171 mm, air permeability 1385 dm ³ / m ² • s.

 The material is suitable for the manufacture of shoe covers for patients.

 Example 5

 A fibrous mixture was prepared from 45 wt.% Bleached flax modified fibers with a linear density of 0.17 tex, a length of 35-40 mm, 50 wt. % of bleached viscose fibers with a linear density of 0.33 tex, length 65 mm and 5 wt.% polyester fibers with a linear density of 0.33 tex, length 66 mm. The fiber mixture was fastened as described above.

Received material with a surface density of 50 g / m ² . The absorptive capacity of the nonwoven fabric is 15 g / g, stiffness 0.65 gs, capillarity 180 mm, air permeability 1480 dm ³ / m ² • s.

 The material is suitable for the manufacture of absorbent wipes for patients.

 The surface density of non-woven materials was determined in accordance with GOST 3811 -72 "Textile materials. Fabrics. Non-woven fabrics and piece products. Methods for determining linear dimensions, linear and surface densities" paragraph 4.7.

 The absorption capacity of nonwoven materials was determined in accordance with GOST 5556081 "Medical absorbent cotton wool" paragraph 3.8.

 The stiffness of nonwoven materials was determined according to GOST 8977-74 "Artificial leather and film materials. Methods for determining stiffness and elasticity" paragraph 4.1.

 The capillarity of nonwoven materials was determined according to GOST 3816-81 "Textile fabrics. Methods for the determination of hygroscopic and water-repellent properties" paragraph 5.

 The breathability of non-woven materials was determined according to GOST 12088-77 "Textile materials and products thereof. Method for the determination of breathability".

Claims (4)

1. Non-woven material for medical products for short-term use, including a mixture of fibers containing natural, artificial and synthetic fibers, bonded together by hydro-jet treatment, in which as natural fibers the mixture contains from 5 to 50 wt.% Flax fibers, as artificial - viscose fibers in an amount of from 50 to 95 wt.%, as synthetic fibers from 0-10 wt.% polyester fibers, while the surface density of the material is in the range from 45 to 100 g / m ² .  2. The material according to claim 1, in which it contains physico-chemically modified fibers as flaxseed.  3. The material according to claim 1 or 2, which contains bleached linen fibers.  4. The material according to one of claims 1 to 3, which contains bleached viscose fibers.