DE2057783A1 - Method and device for producing a textile laminate - Google Patents

Description

Applies to Edge Carpets Ltd., Kidderminster / England

Method and apparatus for producing a

Textile laminate

The invention relates to a method and a device for producing a textile laminate using a Base sheet made entirely or in part of thermoplastic material asern exists. A preferred area of application of the invention consists in making a carpet from heat-welded Bicomponent synthetic felt fibers; however, the invention is also suitable for the manufacture of other woven or non-woven textiles.

It is known to produce textiles from woven or non-woven thermoplastic fibers. In many cases, however, difficulties arise from the fact that these fabrics tend to elongate and thus warp, for example when their moisture content changes, when there is a change in the temperature or the tensile stress that occurs. In the case of non-woven carpets, this behavior is special so annoying because i changes in environmental conditions or force exerted by the surrounding forces easily lead to a change in the carpet surface, creating a carpet throws light wrinkles.

The invention is therefore based on the object of developing a method and a device that enable production allow a textile laminate of a thermoplastic fiber base web and a glass fiber layer, these glass fibers the örunclbahn against changes in the original environment

BATH ORIGINAL

109831/2114

as well as the tensile forces exerted and stabilize a longitudinal; of the laminate.

The invention is based on a method for producing a textile laminate using a base web, which are at least partially made up of consolidated (for example sewn, woven or knitted "·) fibers thermoplastic material, with a flat stabilizing layer on one side of this base sheet Glass fiber is applied »

Out in such a l, the invention consists essentially in the fact c \ "the stabilizing layer and a surface portion of the arundbahn be heated so that at least this upper melts fiiichentell and in localized areas of the glass fibers in parts of the mass of thermoplastic synthetic fibers of the base web are embedded .

Further details of the invention relate to the more detailed design of this method and an appropriate device to carry out the procedure.

An embodiment of the invention is for the application case 1er production of a carpet explained with reference to the drawing.

A web 1 made of synthetic, thermoplastic, nonwoven 3ikoraponenten ™ fibers, for example a nylon 6 / 6.6 Mixture that has previously been sewn and heat-treated so that a mushroom body for a carpet is made * becomes continuous guided by means of draw rollers 2 through a processing station described in more detail below. The movement!? 3bahn runs roughly horizontally; the mushroom body is promoted with the pile facing downwards being the top possibly the back of the carpet.

109831/2114 «, oBQiHAu

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First, the mushroom body web 1 passes through a drying chamber 3, in which the moisture content of the mushroom is brought to a minimum, which is significantly less than Ii and preferably below i / 2 *. After leaving the drying chamber 3, a stabilizing glass fiber layer Ί in the form of a light, coarsely woven material is applied to the back of the mushroom body sheet 1, which is pulled off a supply roll 5 via transport rollers 6. In this exemplary embodiment, the stabilizing layer ft has a basis weight of "1 to ounces per square yard. The glass fibers are preferably provided beforehand with a coating of thermoplastic material, for example polyvinyl chloride; however, this is not essential for the invention; rather, it can other appropriately finished textiles, in particular coarsely woven fabrics, can also be used.

The mushroom sheet 1 and the layer 1 on it are continuously over a support 7 under a heating device 8 pulled away. This heating device 8 has the shape of a rod arranged across the conveying path; by electrically powered infrared elements provide uniform heating. The heating power of the heating device 8 is divisible, as is the pressure exerted on the laminate.

The heating of the laminate leads to a superficial melting of part of the thermoplastic fibers in the upper layers of the mushroom sheet 1 as well as to a melting of any existing coating of the glass fibers, which are also heated. The latter glass fibers are embedded in the fibers of the mushroom sheet and connected to the mushroom sheet when the plastic hardens when it leaves the heating device. In a typical application with the materials mentioned for example

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a conveyor speed of about 1.80 m / min, a web width of up to 5 m and a surface temperature of MOO to M50 ° C used.

It was found that in the course of operation a certain amount of molten thermoplastic material Material accumulates on the rod of the heater 8 and from time to time in strip-like agglomerations from moving laminate is taken. To loosen and remove this residue from the top of the moving laminate, the laminate is passed under a scraper plate 9 arranged in the transverse direction, which is the top of the laminate touched. The height and the angle of this scratching plate relative to the path of movement of the laminate can be used to achieve this be adjusted to an optimal effect.

In the direction of movement behind the scratching plate 9, a rotating cylindrical brush 10 is arranged, which with the Top of the laminate engages and moves opposite to the laminate. This will be on the surface any loose particles in the laminate are brushed off. The brush 10 is enclosed by a suction hood 11 which is connected to a suction device, not shown, and sucks the brushed off particles.

The stabilized laminate felt web is then fed to a conventional station in which the carpet is included a back layer, for example made of stretched polyvinyl chloride, is provided. So this situation is on applied to the side that contains the stabilizing glass fibers. In this way the carpet is completed.

109831/21 U

Claims (10)

Claims 1.) Process for the production of a textile laralnat under Use of a base course that is at least partially. Consists of consolidated (for example sewn, woven or knitted) fibers made of thermoplastic material, with a flat stabilizing layer of glass fibers being applied to one side of this base sheet, characterized in that the stabilizing layer and a surface part of the base sheet are heated so that at least this Surface part melts and t thereby local areas of the glass fibers in parts of the Mass of the thermoplastic synthetic fibers of the base web are embedded. 2.) The method according to claim 1, characterized in that the glass fibers to a woven or non-woven ("non-woven") layers are combined, the glass fibers being provided with a coating of thermoplastic synthetic material. 3.) The method according to claim 1, characterized in that the base web ays a mat of non-woven bicomponent fibers made of thermoplastic material be * I stands »which are consolidated by sewing and subsequent heat treatment. 4.) Verihrfn: according to claim 3, characterized in that the mat is passed through a drying chamber immediately before the stabilizing layer is applied, in which your moisture content is preferably set to Q.5 Gew.Z or less is decreased. 109831/2114 5.) The method according to claim 1, characterized in that the stabilizing layer simultaneously during the heating is pressed onto the base sheet. 6.) Device for carrying out the method according to claim 1, with a conveyor device, which the base web brings into surface contact with the stabilizing glass fiber layer, characterized in that a heating device is provided, which the stabilizing layer and a surface part of the base web heated to a temperature sufficient for a local melting of the thermoplastic fibers, so that local areas of the glass fibers are embedded in the thermoplastic fibers and thereby the base sheet and the stabilizing sheet are connected to one another. 7.) Device according to claim 6, characterized in that one is used to regulate the moisture content Chamber is provided through which the base web is passed before the stabilizing layer is applied and which preferably reduces the moisture content of the web to less than 0.5 wt. *. 8.) Device according to claim 6 or 7, characterized in that for detaching and removing superfluous particles from the TextII larainate after connecting the base web and a scratching and / or bursting device is provided for the stabilizing layer. 9.) Device according to claim 6, characterized in that the heating device contains an electrically heated rod, which is arranged across the fiberglass layer and both heats this layer and presses it into the base sheet. 109831/2114 BAD ORfGlNAL 10.) Device according to one of claims 6 to 9, characterized characterized in that the conveying device contains elements which the glass fiber web continuously in planar Bring contact with a likewise continuously fed web of thermoplastic synthetic fibers. ill.) Textile laminate, consisting of a base sheet of consolidated, in particular non-woven, B! component fibers thermoplastic «plastic and a layer of glass fibers, which are melted into a surface part of the base sheet of the last-mentioned surface part are embedded, characterized by the production according to the method or with the device according to one of the preceding claims. 109831 / 21U Blank page