CS275960B6 - Floor covering with decreased electric resistance - Google Patents

Abstract

The essence of the solution is a flooring with reduced electrical resistance consisting of backing layer based on rubber foil and a layer of textile and / or plastic character that is made of textile electrically conductive material a fiber component which is based on nonwoven and / or woven fabrics and may be colored and / or spatially patterned

Description

The invention relates to a floor with reduced electrical resistance, which consists of a backing layer based on a rubber foil and an appearance layer of textile and / or plastic character, which consists of a textile material containing an electrically conductive fibrous component which is based on nonwovens and / or woven fabrics, and it can be colored and / or spatially patterned.

It is known that the formation of electrostatic charge is a limiting factor in the use of flooring, usually in operations with demanding instrumentation, where static electricity adversely affects their function and in environments with a risk of explosion.

NSR patent no. U.S. Pat. No. 3,243,190 discloses a textile structure which is coated with an electrically conductive layer which is reinforced by electroplating.

French patent no. U.S. Pat. No. 2,272,567 discloses a process for producing nonwoven electrically conductive fibrous layers by the action of an organic polar solvent, followed by application of an aqueous hydrogen chloride solution of stannous chloride, palladium chloride, a mixture of a surfactant-free binder dispersion and an aqueous solution of a metastable metal salt. Between each operation, the material is washed, finally followed by heat treatment.

GB patent no. U.S. Pat. No. 2,096,194 discloses a nonwoven electrically conductive material that is chemically reinforced, wherein the binder composition comprises electrically active carbon fillers or metal powders.

Japanese patent no. No. 2,015,889 discloses a nonwoven antistatic polypropylene carpet where a 0.2 mm thick layer of conductive carbon is applied to its surface. The material is heated sufficiently to strengthen and partially gelatinize the film.

French patent no. U.S. Pat. No. 2,485,557 discloses a carpet which contains 0.01% to 5% of electroconductive fibers of synthetic polymer, in particular based on PES or ΡΛ0, which contain at least 3% of copper sulphide on their surface.

From another French patent no. U.S. Pat. No. 2,518,127 discloses a fabric containing 50% to 3% by weight of carbon fibers and 50% to 97% by weight of cellulose fibers.

U.S. Pat. 4,045,949, 4,457,973, 4,557,968 describe the use of various electrically conductive fibers in fabrics. ·

U.S. Pat. U.S. Pat. No. 4,308,304 discloses an antistatic tufted article comprising a textile base, a metal foil and a nonwoven fibrous layer, all layers being interconnected by tufting or needling.

U.S. Pat. U.S. Pat. No. 4,269,881 discloses antistatic mats or carpets which consist of a face layer formed by a tufted yarn containing electrically conductive fibers, a floor fabric and a backing layer which is adhesively bonded to the pile surface. The disadvantage of the current state is mainly the high technical complexity in the production of electrically conductive textile materials, e.g. in the transfer according to NSR patent no. No. 3,243,190, French Pat. No. 2,272,567, which subsequently manifests itself economically, thereby narrowing their application sphere to special applications only. Production of non-woven electrically conductive material according to GB patent no. No. 2,096,194 is technologically demanding heating mixing of the binder mixture containing the electrically active filler, its application, drying and curing.

Non-woven textile material based on polypropylene with antistatic properties according to Japanese patent no. 2 015 ΘΒ9 is not satisfactory from the point of view of possible abrasion of the conductive carbon layer from its surface, thus reducing the effect of this treatment.

Application of various electrically conductive fibers in the structure of textiles such as U.S. Pat. U.S. Pat.

• CS 275960 06 *

These and other disadvantages are solved by the present invention, according to which the floor covering with reduced electrical resistance consists of a backing layer 0.2 mm to 0 mm thick based on a rubber foil and a textile and / or plastic backing layer 0.05 mm to 0 mm thick. 10 mm, which consists of a textile material containing 0.3% to 100% of an electrically conductive fiber-2 7 component with an electrical resistance of 10 ohm to 5.10 ohm, which is based on nonwoven and / or woven fabrics and can be colored and and / or spatially patterned.

The advantage of the flooring according to the invention is its great variability of use in the field of application, with regard to the possibilities of its preparation. The back layer of the flooring guarantees its anti-slip effect, which can be increased by spatial patterning.

The appearance layer formed by the textile material can have a textile to plastic character, increases the aesthetic level of the product and allows the use of the flooring even in areas with strong stress. In the case of using an electrically conductive rubber foil as a pipe layer, it is possible to heat the floor area over the entire surface.

The floor can be applied as strips in the form of cassettes.

The invention is further described but not limited by the following examples.

Example 1

Flooring with reduced electrical resistance consisting of a rubber foil 1.5 mm thick with the following composition:

conductive carbon black butadiene styrene rubber Chezakarb EC 100 wt. 20 wt. eel parts soot Nigros F 50 wt. parts kaolin 70 wt. d i e 1 o v. Zn 5 wt. parts plasticizers 16 wt. parts vulcanization accelerators 2.5 wt. parts an t i ox i dant 1.5 wt. parts sulfur 2.5 wt. parts stearin 2.5 wt. parts and a 0.5 mm thick layer of nonwoven needled material with a composition of 30 ΐ PANg 8.9 dtex / 80 mm with an electrical resistance of 70 ohms and 70 % POPg 17 dtex / 90 mm.

The character of the appearance layer is plastic and the whole structure is spatially patterned. The electrical resistance of the floor is 8.1 (Ρ ohm.

Example 2

Flooring as in Example 1, except that the 6 mm thick backing layer is formed of a nonwoven chemically reinforced needled material having a composition of 20 ¾ PANg 8.9 dtex / 80 mm.

with electrical resistance 70 ohm and 80% PADg 12 dtex / 80 mm. The character of the appearance layer is textile.

The electrical resistance of the floor is 4.10 ohms.

Example 3

Flooring as in Example 1, with the difference that the appearance layer with a thickness of 2 mm is formed by a woven material with a warp composition - 25 tex / Čm 40/2 / PES / VSg;

attack - 125 tex / Čm 8/2 / 65 ¾ POPgj 5 ° '. PANg 8.9 dtex / 80 mm with electrical resistance 30 ohm and 30% VSg.

^J CS 275960 B 6

The character of the appearance layer is textile.

The electrical resistance of the floor is 5.10 $ ohm. .

A similar effect is achieved by using electrically conductive fibers based on carbon, PAD, PES, VS, etc.

By using rubber foil without the application of electrically active fillers in the polymer matrix, we obtain materials with reduced surface electrical resistance.

Electrical resistances of floor coverings were measured in accordance with the ČSN 341 3Θ2 standard. ·

Claims (1)

PATENT CLAIMS Flooring with reduced electrical resistance, characterized in that the backing layer with a thickness of 0.2 mm to 8 mm is based on a rubber foil and the appearance layer of textile and / or plastic character □ 0.05 mm to 10 mm thick is formed by a textile material with containing -2 0.3% to 100% of an electrically conductive fibrous component, with an electrical resistance of 10 ohm to 5.10 .mu.m, which is based on nonwoven and / or woven fabrics and is optionally color and / or spatially patterned. ·