RU34549U1 - Non-woven bulk thermal insulation material - Google Patents

Description

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Non-woven voluminous heat-insulating material

The utility model relates to the textile industry, in particular to non-woven materials, and can be used as insulation in clothes and shoes, sleeping bags, quilts, as well as fillers in upholstered furniture, etc. products

Known non-woven bulk heat-insulating material from a fibrous mixture containing natural wool and low-melting synthetic fibers bonded by a partially melted polymer of the latter, located mainly at the contact points of the low-melting synthetic fibers with each other and with the rest of the fibers of the fiber mixture, while the fiber mixture further comprises polyester fibers (see utility model RU No. 9227, CL. D04H 1/40).

A disadvantage of the known material is the low consumer assortment due to the accumulation of static electricity in the material, due to insufficient moisture absorption and moisture loss, low antibacterial properties, the complexity of manufacturing and low quality due to the fact that the wool migrates through the fabric in the manufacture of clothing during production.

The objective of the utility model is to expand the assortment and improve the quality of the fabric.

This problem is solved by the fact that in a non-woven bulk heat-insulating material made of a fibrous mixture containing natural wool and fusible synthetic fibers bonded

Cl. DO4H 1/42; 1/54

partially melted polymer of the latter, located mainly in the places of contact of low-melting synthetic fibers with each other and with the rest of the fibers of the fiber mixture, while the fiber mixture additionally contains polyester fibers, according to a utility model, the wool has an average fineness of 18.1 to 34.0 μm and the quality is 48-60.

Such wool is optimal for the production of non-woven bulk insulation, since it does not migrate through the fabric in the sewing industry. In addition, existing equipment for the production of nonwovens best processes this wool.

The polyester fibers of the fibrous mixture of a non-woven bulk heat-insulating material may contain lavsan fibers.

The polyester fibers of the fibrous mixture can be hollow.

Fusible synthetic fibers of the fibrous mixture can be made non-combustible, which, in addition to maintaining heat, gives the sewing product fireproof properties.

Non-woven bulk heat-insulating material may additionally contain viscose fibers, which eliminates the accumulation of static electricity, since viscose fiber absorbs moisture well.

Viscose fibers of the fibrous mixture can be made non-combustible.

Non-woven bulk heat-insulating material may additionally contain linen fibers, which improves moisture absorption and moisture loss of the material. In addition, flax has high antibacterial properties.

The non-woven bulk thermal insulation material may further comprise artificial fibers.

Fusible synthetic fibers of the fibrous mixture can be made of polypropylene.

Fusible synthetic fibers of the fibrous mixture may contain bicomponent fibers, one of the components of which is made of a polymer with a melting point lower than the melting temperature of the other component.

The drawing schematically shows a cross section of a non-woven bulk heat-insulating material.

The non-woven bulk heat-insulating material contains a fibrous mixture of natural wool 1, polyester fibers 2 and low-melting synthetic fibers 3. The material is bonded with partially melted polymer 4, low-melting fibers 3. The melted polymer 4 of these fibers is located mainly at the points of their contact with each other and with fibers 1 and 2 .

Due to the good adhesion of the melted polymer 4 low-melting fibers 3 to polyester fibers 2 and at the same time relatively low adhesion to wool 1 (wool fibers) during operation of the material, which, as a rule, is carried out in a package with a front and lining cloths, its high strength and wear resistance while maintaining its bulkiness and elasticity, which in turn determines its high heat-shielding properties and the ability to restore the thickness of the material when exposed to dyne iCal multicycle loads. The high bulk of the material is ensured, also by the location of the partially melted polymer 4 fibers 3 mainly in the places of their contact with each other and with fibers 1 and 2.

Fine, semi-fine or semi-coarse wool may be used.

As the polyester fibers, for example, lavsan fibers can be used.

For materials used as insulation in clothing, sleeping bags, etc. products operated in extremely cold climatic conditions, preferably polyester fibers are used hollow, mainly

siliconized polyester fibers produced, for example, by Mogil Yevsky PO Chemical fiber.

As fusible synthetic fibers, polypropylene fibers can be used. More preferred as fusible synthetic fibers is the use of bicomponent fibers in which one of the components is made of a polymer with a melting point lower than the melting temperature of the polymer of the other component. As such fibers, for example, bicomponent fibers of the “core-shell” type can be used, in which the “shell” is made of a copolyester polymer with a melting point lower than the melting temperature of a “core made of a polyester polymer. Such fibers under the trade name Celbond 254 are manufactured by Hoechst Celanese Sof. (USA) (see Nonwovens Report Inter, 1992, No. 261 p. 3-9). Similar fibers under the name Wellbond are manufactured by Wellman, Inc (USA) (see Nonwovens Abstracts 1996, N2 10, p. 517).

The surface density, thickness and ratio of the components of the fibrous mixture are selected depending on the specific purpose of the material (for clothes, sleeping bags, shoes, furniture) and the climatic conditions of use of the products using the material according to the proposed utility model.

In general, the surface density is in the range of 80300 g / m, and the thickness is 4-20 mm.

The content of the components of the fibrous mixture; mass% wool - 10-40 polyester fiber - 70-10

fusible synthetic

fiber - 20-50

The total shadow resistance of the material when used in a package with a front and backing cloth is in the range, m K / W: 0.24 - 0.38, resistance to repeated compression,%: 60.

Claims (10)

1. Non-woven bulk heat-insulating material made of a fibrous mixture containing natural wool and low-melting synthetic fibers, bonded with a partially melted polymer of the latter, located mainly at the contact points of the low-melting synthetic fibers with each other and with the rest of the fibers of the fiber mixture, while the fiber mixture additionally contains polyester fibers, characterized in that the wool has an average fineness of 18.1 to 34.0 microns and a quality of 48-60. 2. Non-woven bulk heat-insulating material according to claim 1, characterized in that the polyester fibers of the fibrous mixture contain lavsan fibers. 3. Non-woven bulk heat-insulating material according to claim 1 or 2, characterized in that the polyester fibers of the fibrous mixture are hollow. 4. Non-woven bulk heat-insulating material according to one of claims 1 to 3, characterized in that the fusible synthetic fibers of the fibrous mixture are made non-combustible. 5. Non-woven bulk heat-insulating material according to one of claims 1 to 4, characterized in that it further contains viscose fibers. 6. Non-woven bulk heat-insulating material according to claim 5, characterized in that the viscose fibers are made non-combustible. 7. Non-woven bulk thermal insulation material according to one of claims 1 to 6, characterized in that it further comprises linen fibers. 8. Non-woven bulk thermal insulation material according to one of claims 1 to 7, characterized in that it further comprises artificial fibers. 9. Non-woven bulk heat-insulating material according to claim 1, characterized in that the low-melting synthetic fibers of the fibrous mixture are made of polypropylene. 10. The non-woven bulk heat-insulating material according to claim 1, characterized in that the low-melting synthetic fibers of the fibrous mixture contain bicomponent fibers, one of the components of which is made of a polymer with a melting point lower than the melting temperature of the other component.