FI85801B - Carpet material - Google Patents

Description

85801

This invention relates to a material for use as a carpet or the like and to be placed, for example, in a place where it is transported from a dirty area to a clean area, e.g. a house door or a place where liquid may spill, such as a kitchen or a vending machine. area.

Until now, such mats have usually been made of, for example, tufted fabric. However, sheets of material have also been proposed which are held in place in the holder, whereby the sheet is disposable and is made of a relatively inexpensive and absorbent material such as paper.

EP-A-0188005A describes a suitable 20 types of disposable carpet material. The mat described in this publication consists essentially of a tread made of a continuous filament nylon nonwoven fabric and an absorbent inner layer made of a mixture of polymeric microfibers and wood pulp, usually using a liquid-impermeable base layer. The layers of material are spaced apart. * in their use to prevent separation.

The disposable mat material of this application consists of a wear-resistant permeable layer made of a nonwoven web of bonded filaments and an absorbent layer of microfibers. The permeable layer and the absorbent layer are bonded to each other by ultrasonic or thermal bonding, which by firing through the permeable layer provides a melt bond. between these layers, the bonds forming pockets on the surface of the material, as a result of which the surface roughness of the material changes. The pockets also retain dirt and dust.

The dressings are preferably placed close together (e.g., 3.5 to 5 mm apart) to provide good abrasion properties, and the dressing pattern is preferably diamond or square.

The abrasion resistant layer is preferably a polypropylene-10 filament nonwoven fabric which has been treated or which contains a surfactant to improve wettability. .2 si. Its basis weight is about 100 g / m.

The relatively absorbent inner or middle layer is preferably composed of thermally bonded polymeric, e.g., polypropylene, and wood pulp fibers that provide good absorbency along with a relatively uniform structure due to the interweaving of the fibers and wood pulp. Other absorbent particles or fibers may also be used.

The middle layer is preferably 30% polypropylene and 70% wood pulp, giving a basis weight of 190 g / m2. This too. . the absorbent middle layer is preferably treated; 25 ty with surfactant.

The structure preferably uses a waterproof base layer, which may suitably be a 38 micron polyethylene sheet, the base sheet being glued or otherwise: 30 attached to the absorbent inner layer either by the same bonding procedure used to bond the wear and absorbent layers, or preferably by gluing or the like , to prevent the formation of holes throughout the material, which could nullify the effect of the 35 waterproof layer.

The accompanying drawings show, by way of example, 3,85801 carpet material according to the invention, whereby

Figure 1 is a layered perspective view of the material, 5

Figure 2 is an end view of the material,

Figure 3 is an enlarged sectional view between the bound areas, and 10

Figure 4 is a sectional view of the material through the bonded area.

Referring to the drawings of the drawings, the material includes an absorbent resistant outer layer 2 of a polypropylene tile nonwoven fabric bonded to an inner heat-bonded microfibre and absorbent wood pulp absorbent layer 4 using a series of closely spaced 6 interconnected regions. or as a diamond pattern. The distance between adjacent bonded areas is about 3.5 mm and the distance between the parallel lines of the bonded pattern is about 38 mm.

The bonded areas 6 are formed by recesses in the outer surface of the wear-resistant layer 2, which provide "pockets" to which dirt or dust can adhere. The bonded regions 6 are fired through the outer layer during manufacture so that the continuous polymer fibers 30 of the outer layer bind to the molten polymer fibers of the absorbent middle layer 4. This provides a very good and strong connection between the two layers while the liquid can simultaneously easily pass through the permeable outer layer 2 to the absorbent inner layer 4 ': "-35 along the paths between the bonds, as illustrated by X in Figure 3.

Claims (9)

A disposable matte material comprising a durable, pervious layer (2) made of 5 woven filament cloth, and an absorbent layer (4) of microfibers, characterized in that the pervious (2) layer and the absorbent (4) the layer is bonded to each other in point by means of an ultrasonic or heat bond which, by burning through the permeable layer, creates a melt bond between these layers, the bonds forming pockets on the material surface, the effect of which the surface of the material changes. 2. Material according to claim 1, characterized in that absorbent particles and / or fibers are added to the absorbent layer (4) of microfibers. Material according to claim 1 or 2, characterized in that the bonds (6) are arranged in a rhombic or square pattern. Material according to claim 3, characterized in that the distance between the bonded areas (6) is about 3.5 mm, and the distance between the parallel lines in the bonding pattern is about 38 mm. 5. A material according to any of the preceding claims, characterized in that the permeable layer (2) is polypropylene filament nonwoven which is treated with a surfactant or which contains it. 6. A material according to any of the preceding claims, characterized in that the absorbent layer (4) consists of heat-bonded polymer fibers and wood pulp fibers. k. : |: 7 85801 7. A material according to claim 6, characterized in that the absorbent layer (4) contains about 30% polypropylene fibers and 70% wood pulp, and its square weight is about 190 g / m 2. 5 8. A material according to any one of the preceding claims, characterized in that it comprises a waterproof bottom layer (8) located on the opposite side of the absorbent layer (4) relative to the wear-resistant layer (2). 9. Material according to claim 8, characterized in that the bottom layer (8) is bonded to the absorbent layer (4) either with the same connections (6) used for bonding the durable (2) layer and the absorbent layer (4). ) to each other, or with glue or in a similar manner.