DE1811836A1 - Process for the production of needle felt carpets - Google Patents

Description

Process for the production of needle felt carpets ".

The invention relates to a method for producing needle felt carpets and carpets made by this process.

It is known to produce non-woven so-called needle felt carpets, by placing one or more fiber fleece, or a fiber package on one or both Pages of a so-called Stramin, e.g. made of jute fabric and then the Fiber fleece or the fiber package together with the tension in a known per se Needle felting machine exposed to needle processing, By needle processing the fibers in the fleece or packages are intertwined while anchoring of the fibers in the canvas is also achieved. By the Stramin serves as a means of securing the fibers, it also grants an additional one Reinforcement of the carpet, especially for entangling stretch.

If fiber packages are arranged on both sides of a string, so the needles penetrate the fiber fleece from the outside, respectively" -packages a; one of the two needled layers can be used as an underfelt or Serving undercarriage. However, an underfelt can also be placed afterwards the top carpet on the canvas has been needled The known method for Manufacture of non - woven needle felt carpets such as those made in this way However, needle felt carpets have several disadvantages.

By removing the fiber fleece or packages only on one side of a needle processing it is necessary to needle this fleece or package very tightly, This means that the fibers are perfectly intertwined and that they adhere well to the canvas This results in a fairly flat and brittle carpet it often turns out with such a strong needling that the canvas itself is damaged, making its resilience and durability seriously can be affected by putting the needles of the needle entangling machine into the The fiber fleece or package can only penetrate from one side, which is the top of the ippichs forms, the fibers are at least partially through the needles of this Pulled side to the opposite side and through the mesh of the canvas pulled through this creates small holes on the top of the carpet, where the needles have penetrated the carpet and form rows of holes visible stripes, the so-called pinstripes, which create an undesirable restlessness Can give sight.

It has also been found that when impregnating through the kidneys of such carpets the waterproofing agent / formed by the needles Openings penetrates into the fleece or package up to the canvas, so that after hardening of the impregnating agent, the whole, ie. the canvas with the fiber end attached to it forms a rigid mass, which gives the carpet additional rigidity. Through this the carpet also becomes less hands-on.

The known Nadelilzteppichc also have a relatively leaky pole surface which can be explained by the fact that the top of the carpet is the side where the needles last in during needle processing penetrated the surface.

As the needles advance, the fibers or fiber parts become through the penetrating needles from one side of the fleece to the other or package.

This creates a less dense fiber occupancy on the upper side, while the upper layer consists for the most part of horizontally lying fibers or fiber ends consists. This is the reason why the carpets known up to now have a felt-like appearance Having the outside, while also enhancing the "pilling" effect, the invention The aim is to provide a method which eliminates the above-mentioned disadvantages can be.

This new process consists mainly in the fact that a nonwoven fabric, or several fiber fleeces lying on top of one another, or a fiber package in one per se known needle felting machine needled, with the needle processing on both Pages is carried out one or more times, and that after this needle processing to the side where the needles last in their effective working stroke into the nonwoven fabric or package have penetrated, a fabric or other reinforcing layer arranges. By having the fiber fleece or package on both sides of a needle processing is exposed, the fibers are intertwined more closely than when. only on one Side is needled; so you need when using the inventive method not so tightly needled, so that the result is a carpet that is less flat and is less rigid than the carpets that are produced using the known method result. In addition, the application of the method according to the invention makes use A rope for fiber fastening is superfluous, as the interlacing of the fibers already gnawed in itself. A reinforcement layer can when using the inventive Method after needling the fiber fleece or packages are arranged wherein the carpet retains much greater flexibility and suppleness. This one If the reinforcement layer is not exposed to needle treatment, neither can it be damaged by the needle; the free side of this layer remains perfect smooth unevenness due to needle processing in the known needle felt carpets be generated.

The side of the nonwoven fabric or fiber package that the where during the needle processing was the last to have penetrated the effective needle sticks, has upright fiber ends> while the fiber density is greater on this side is than on the side where the needles last -in the viless biv. the package have penetrated. By having this side used as the top of the carpet So you have a carpet with a polar texture on the top, in contrast to the previously manufactured non-woven carpets, which are quite hard feel. Furthermore, a carpet produced according to the method according to the invention has no so-called pinstripes on the upper side, while those around needling occurring e.g. defects caused by needle breakage are much less visible; Broken needles do not need to be replaced as often as with the previous ones known procedures.

Another advantage is achieved according to the invention by the fiber fleece or package before arranging a reinforcing layer treated with an impregnating agent. This ensures that the reinforcement layer on the underside of the carpet, as is the case with the known processes through the Impregnation agent can be influenced so that the solidification of the reinforcement layer is avoided.

It will now be the invention with reference to the drawings, wherein by way of example two modes of application for the production of a carpet according to FIG of the invention are to be explained in more detail.

They show: Figure 1 a representation in section of the simplest Carpet that can be produced using the method according to the invention, and Figure 2 is a perspective view with a section of another application.

As shown in Figure 1, the simplest carpet answers in the affirmative of the present invention from a needled fiber fleece or packet 1, which is well or not with impregnating agent can be soaked, and out a canvas 2, which is connected to the fiber package 1 by means of an adhesive layer 3 is. The free side 4 of the needled fiber fleece 1 is the side where the last one The working stroke of the piercing needles has ended, this means that when pushing needles side 4 is the one on the side where the needles really are have been plugged in for the last time, opposite; when using pulling needles on the other hand, side 4 is the one where the needles enter the nonwoven fabric for the last time have penetrated.

REæ page 4 shows a lot of standing fibers 5 9 whereby the fiber density of the needled fiber viscous decreases somewhat towards the other side.

The carpet shown in Figure 2 is made from a top carpet 6 and a sub-carpet 7 assembled, which by means of an adhesive layer 8 together are connected, with a jute fabric on the underside of the product designed in this way 9 is arranged by means of an adhesive layer 10.

The top carpet is made as follows: A nylon mix made of 50% nylon fibers, white, 12 denier, fiber length 80mm, and 50% nylon fibers, black, 8 to 15 denier, with fiber lengths between 40 and 80 nm, is processed on a carding machine (possibly carding machine) carded, after which a fiber fleece packet is formed with the help of a fiber fleece packet maker which is inserted into a needle loom. Weight of the fiber fleece package: 500 gim2. Then the package is closed on one side using needles number 32 Barb worked in such a way that 96 stitches were made. In doing so, the needles are preserved an alternating movement with 1 7/8 cm stroke, the needle ends by 5/32 cm through the fiber fleece package.

Then the needled fiber fleece package is again, now from the other side, also pierced with needles No. 32 Closed Barb, whereby 96 stitches per square cm are made again. The stroke of those in alternating motion Needles is again 1 7/8 cm, but this time the needle ends are 5/8 cm through the Package pushed through.

The sub-carpet 7 is produced as follows: a mixture from 70% jute fibers and 30% nylon and wool waste is made on a carding machine (possibly carding machine) carded, and it becomes a fiber fleece package with the help of a fiber fleece package image which is inserted into a needle loom.

The weight of the fiber fleece package is 400 gim2.

In this needling machine, the fiber fleece package is on one side needled and needled with a jute fabric 11 of 200 g / m2 for this purpose arranged on the underside of the package and together with this through the needle loom to be led.

For this needle processing, needles No. 32 Closed Barb are used, with an alternating movement of 17 / cm 8 stroke by 5/32 cm through the fiber fleece package put through it in such a way that 112 stitches are made per square cm.

After the upper carpet 6 and the lower carpet 7 explained in the above Way, the procedure is as follows: The top carpet is impregnated with a hard acrylic dispersion in an impregnation machine by adding you put him in a Bath of two parts by weight Akronal and 1 part by weight Immersed in water.

After impregnation, a drum drying machine is used for dried at a temperature of 155 ° C. When impregnating, the top carpet takes about 120 g / m2 solids. The side of the top carpet 8 where the needles during the second Treatment, is coated with 50 g / m2 adhesive (hotmelt) 5 the under carpet 7 will be with the side that the where the needle during needle treatment have been received, opposite to the coated side 8 of the top carpet, after which the lower and upper carpets are pressed together with the help of two calender rollers will.

A jute fabric is then made using the same BHoltmeltg process 9 with a weight of 400 g / m 2 by means of an adhesive layer 10 on the underside attached to the sub-carpet.

Finally, the carpet is placed in a cutting machine on the desired Length and width cut off Of course, within the scope of the invention many other compositions and treatments can be used.

Claims (3)

Expectations . 1.- Method of making a non-woven needle felt carpet characterized in that it mainly consists in using a nonwoven fabric (1) or several superimposed fiber fleeces or a fiber package in one needle felting machine known per se needled, the needle processing performed at least once each on both sides, and that one then clicks on the side of the needled product where the needles were placed during the final machining phase finished their working stroke, a fabric layer (2) or another reinforcement layer arranges. 2. The method according to claim 1, characterized in that said Reinforcement layer (2) is placed on the needled fiber fleece or package, after the fleece or package has been treated with an impregnating agent. 3.- The method according to claim 1, characterized in that on the mentioned fiber fleece or package and the mentioned reinforcing layer an under carpet (7) is arranged. L e r s e i t e