DE1240496B - Process for the production of velvety pile products - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

D06n

German class: 8h-8

Number: 1240 496

File number: F 32702 VII a / 8 h

Filing date: December 5, 1960

Open date: May 18, 1967

The invention relates to a method for the production of velvety pile products for clothing or industrial purposes.

Until now, velvet was mainly made by weaving. Thereby are of the threads of the fabric base on the one hand and the pile threads that bind with these on the other hand, lying parallel to one another Hoses generated. In the subsequent production process, the pile threads are each The tube is cut open and dissolved in such a way that the tufts of fibers erect form a rib. This manufacturing process requires a lot of labor that to achieve a sufficiently dense pile thread cover about 500 to 1200 wefts / dm entered Need to become.

There have recently also become known processes for the production of pile products in which weaving or knitting is largely eliminated and possibly only for production the basic product is necessary. The pile is cut open from pieces of thread, thread loops can be, roving, chenille od. The like. Formed and glued to the base material. It is also known to sew pile threads into the grand fabric and cut them into a pile.

These processes are designed for the production of floor coverings, furniture coverings and the like. They are not suitable for the production of velvety pile products, because afterwards none are suitable for Velvet has a sufficiently dense and short pile cover made. Also with the semi-finished products no hoses formed that can be further treated with the usual velvet cutting devices and finishing machines and therefore the Enable the use of these machines.

After all, it is no longer new to combine fibers with a base material in order to create fiber mats, imitation grass, To obtain fur imitations or the like. The above apply equally to these products mentioned objections. In the case of these products, there is also an evenly ordered one Fiber layer not on. In this way, however, velvety products cannot be produced.

Thus, the previously known methods do not provide any new teaching for the production of velvety pile products which take into account the specific conditions for the manufacture of these products.

The invention is therefore based on the object of producing velvety pile products Retention of the usual pile cover densities and the previously used cutting and finishing processes ears for production

of velvety pile products

Applicant:

Research Institute for Textile Technology,

Karl-Marx-Stadt S 6, Annaberger Str. 240

Named as inventor:

Siegfried Ploch,

Dipl.-Ing. Heinz Zschunke, Karl-Marx-Stadt

designing technologies more efficiently than by weaving or knitting.
The object is achieved by placing yarns or nonwovens on a prefabricated base material transversely to the longitudinal direction and connecting them to the base material by closely spaced parallel longitudinal seams so that hoses are created between the longitudinal seams, which are cut open and then finished in a known manner like velvet. The longitudinal seams can be produced by sewing, gluing, sewing and gluing and by welding.
In the drawing, the velvety pile product produced by the method according to the invention is shown in section. The drawing shows individual sections of the manufacturing process.
Yarns or nonwovens 2 are placed on the basic fabric 1 transversely to the longitudinal direction of the basic fabric 1. The bond between the base fabric 1 and the later pile-forming yarns or nonwovens 2 is produced by longitudinal seams 3. The longitudinal seams 3 are arranged close to one another in a stitch-like manner. In particular, they can be obtained by sewing, for example on multi-needle machines. Since a very tight seam is required to achieve particularly pile-tight velvet, the use of shrinkable sewing threads, z. B.

those made of polyvinyl chloride, expedient. The same is true of the seam formation by gluing or welding possible. The seam welding is carried out in a known manner using strips of thermoplastic Material or from thermoplastic threads. Hoses 4 formed, which are then recorded by means of a cutting knife 5 in a manner known from the manufacture of velvet.

709 580/173

Claims (2)

be cut. The pile is now treated further by means of velvet finishing, which is also known. Low-twist roving yarns are preferably used as pile-forming yarns, which means that no fine-spinning capacity is required and, moreover, the brushing passages required for fiber opening can be significantly reduced. In contrast, fine yarns, some of which are combed, are used without exception for the production of velvets according to the known processes, which bind considerable capacities in the fine spinning mill. To resolve the high twist of the pile thread, a large number of brushing passages are necessary, which make the finishing process very tedious. If pile fiber fleeces are used, only the pre-spinning up to the card is required. In the method according to the invention, the use of untwisted, glued yarns as pile threads is also possible. The method according to the invention also offers the advantage of switching off the cross and weft bobbins and working directly from large-format roving bobbins. The achievements that can be achieved by connecting the pile to the base material according to the invention are many times that of the previously known methods for producing velvets. Only in this way is it possible to set up production lines for velvet production using known velvet finishing machines, and a high increase in labor productivity is also ensured in the velvet finishing. Patent claims: 1. A method for the production of velvety pile products, characterized in that that placed on a prefabricated base material transversely to the longitudinal direction of yarns or nonwovens and so connected to the basic fabric by closely spaced parallel longitudinal seams that hoses arise between the longitudinal seams, which are cut open and then in known way to be equipped velvety. 2. The method according to claim 1, characterized in that to achieve taut longitudinal seams (3) Shrinkable sewing thread can be used. Considered publications:
German Patent No. 1,008,247;
German Auslegeschrift No. 1069 560;
German utility model No. 1 819 307;
Austrian Patent No. 163 757;
Swiss Patent No. 161 620;
U.S. Patent Nos. 2,903,708, 2,257,738, 961139. 1 sheet of drawings 709 580/173 5.67 Bundesdriickerei Berlin