Abstract: Compositions of polyesters having improved affinity for acid dyes are produced by incorporating in the compositions of polyester-forming dicarboxylic acid and dihydric alcohols quaternary ammonium compounds of the formula ##STR1## WHEREIN THE R's represent aliphatic, cycloaliphatic or aromatic radicals, said R's being free of ester-forming substituents, at least two R's being capable of forming together a ring containing or not other quaternizable nitrogen atoms; and where:X.sup.n.sup.- is a stable anion of valency n of an organic acid, of a mineral oxyacid, or an halide; and where:y is an integer equal to the valence of the anion.

Abstract: A process for extending the seasonal useful life of ski trails including covering a sloping terrain with an elongate non-woven fabric prior to the first snow fall such that melting of the snow collected on the fabric is retarded, and a ski trail produced in accordance with the above process.

Abstract: Articles made from polyesteramines such as filaments, fibers and molded products are dyed by treating the article with an alkylating agent in the form of a solution or emulsion in an amount of at least 1.5% by weight based on the weight of the article and at a temperature higher than room temperature for at least 15 minutes. The article is then dyed with a conventional anionic dye and preferably these two steps are carried out simultaneously.

Abstract: Automatic device for loading and unloading identical objects e.g. textile or yarn supports, on at least one machine and for conveying said objects between the machine, a take up area and a feed area for use particularly in the automatic doffing and donning operation of textile machines, and more especially, machines with vertical spindles, such as synthetic yarn drawing machines.The device includes at least two groups of cars having gripping and laying means. The first group is used for removing treated objects e.g. bobbin with yarn winding thereon, from the machine and conveying them to a take up area, the second group for conveying objects to be treated e.g. empty bobbins, from the feed area and positioning them on the machine.

Abstract: A method and apparatus for sensing the presence or absence of yarns using a simple airflow in an open slot formed between parallel plates, the presence upstream of the proper yarn path being sensed. In one form, the pressure is sensed at multiple points and averaged to accommodate yarn oscillation.

Abstract: A process for treating filamentary products, such as yarn, includes advancing the yarn in a groove, which has orifices opening in the bottom thereof, and which communicate with a channel through which a fluid is expelled. The fluid supports the strand so that the yarn does not touch the groove. In addition, the fluid treats the yarn and helps to advance the yarn.

Abstract: An apparatus for processing yarn in order to texturize and cut the yarn includes means for using a fluid to direct yarn into a tube which has a rotating spindle therein around which the yarn forms a wad. At least part of the fluid is exhausted from the tube and the wad is then cut and removed from the spindle.

Abstract: A process for the manufacture of non-woven webs of continuous filaments by extrusion, stretching, deflection and deposition of a bundle of filaments on a receiving table and executing a reciprocating movement in a direction transverse to the direction of advance of the receiving table, is disclosed. Also disclosed is an apparatus for carrying out that process, for applying a reciprocating movement to the filament deflection device, comprising first, a tube in two parts, through which the filaments travel, having a fixed part and a movable part one end of which slides in the fixed part and the other carries the deflection device, and, second, means for subjecting the movable part of the tube, held parallel to the table which receives the filaments, to a reciprocating movement.

Abstract: A yarn treatment unit including a tubular body having a helical groove on its inner surface and a plurality of orifices opening in the groove to impart a treating fluid on the yarn as it passes along the groove. The yarn preferably is presented to the treatment unit pneumatically and traverses the unit without applied tension along its length.

Abstract: Apparatus for automatic bobbin changing on a high speed frontal bobbin winder with at least one winding-up station, at least one yarn support gripping spindle with a horizontal axis, a rotatable winding cylinder mounted for movement into and out of tangential engagement with a package forming on a yarn support on said spindle, a fixed yarn guide and a reciprocable yarn guide for distributing yarn along the yarn support, said apparatus comprising, mounted on a frame,A loading and unloading means including at least two parallel spindles, one of said spindles for removing a wound yarn package from the gripping spindle and another spindle for placing an empty yarn support on said gripping spindle, said parallel spindles being movable in turn into an aligned position in axial alignment with a gripping spindle of the machine;Nozzle means for capturing and removing the yarn fed to the yarn support, said nozzle means having a rectilinear capture slit communicating with a channel through which a stream of fluid may be

Abstract: A winding station for winding multiple bobbins in vertically-staggered winding units having two bobbin mounts associated with an upper winding unit and three bobbin mounts at the lower winding unit. Four yarn guides are positioned above both winding units to stabilize the yarn en route to a pair of yarn distributors which are individually associated with the winding units, and a deflecting guide is positioned adjacent the upper of the two yarn distributors to selectively guide one of the yarns which is alternated between the upper and lower winding units.

Abstract: This invention provides yarns of randomly crimped filaments which are associated together into a substantially cylindrical yarn. The filaments are made by extruding two different synthetic organic polymers simultaneously through the same elongated orifice and the polymers are fed to different orifices in different proportions or at different angles with respect to the axes of the orifices so that in some of the filaments the interface between the two polymer layers is along or parallel to the smaller axis of the cross-section thereof while the interface of other filaments is along or parallel to the larger axis.

Abstract: Methods of and apparatus for processing yarn in order to texturize and cut the yarn include using a fluid to direct yarn into a tube having a rotating spindle therein around which the yarn forms a wad. At least part of the fluid is exhausted from the tube and the wad is then cut and removed from the spindle.

Abstract: The invention concerns new difficultly inflammable polyesteramide yarns, fibers and films.These yarns, fibers or films consist of a polymer obtained from the reaction of at least one aromatic diisocyanate and aromatic diacids, at least one of said diacids containing one or more ester groups.These new yarns, fibers and films are employed in all fields in which properties of low inflammability are desired.

Abstract: This invention relates to a device for the transfer and the treatment of textile yarns comprising a pneumatic means comprising a body pierced from top to bottom with a channel of transversal section, preferably oblong the surface of said body increasing from upstream to downstream, said body being slit in the forepart to make the channel communicate with the outside on substantially its whole length along the generatrix of channel, and a higher part provided with at least a tubular member allowing a fluid to be fed to at least two orifices, parallel to the axis of the nozzle channel, said tubular members communicating with the higher part of said channel by means of a chamber, and a slot for permitting the passage of yarn from the outside towards said channel.

Abstract: The invention relates to a method of fixing copper salts on articles of synthetic polymers such as described in copending U.S. Pat. application Ser. No. 353,730 filed Apr. 20, 1973, now U.S. Pat. No. 3,940,533, patented Feb. 24, 1976; it also concerns articles and particularly, textile articles which have been obtained by the process as well as all materials containing them.The process involves subjecting the articles to the action of hydrogen sulfide and then to the action of a copper salt, characterized by the fact that the treatment with the copper salt is carried out in the presence of polyphenol.The articles obtained may be used, because of their good antistatic properties, to the manufacture of floor or wall coverings and, because of their good conductivity, to the manufacture of heating articles (partitions, clothes, industrial heating articles, etc.).

Abstract: Polyesteramines with good dye affinity for anionic dyestuffs formed by reactingA. at least an aromatic dicarboxylic acid and possibly a small amount of an aliphatic diacid,B. at least a diol having at least 3 carbon atoms such as an aliphatic, a saturated alicyclic or a cycloaliphatic diol, andC. at least a compound of the formulaNR.sub.3where R, being the same or different, is alkyl, saturated alicyclic, cycloalkyl or arylaliphatic, or where two R groups form a cycle between them.The NR.sub.3 compound has 1, 2 or 3 R groups containing 0, 1, 2 or 3 ester generating groups with the total number of ester generating groups being 1 to 3. The NR.sub.3 compound has no more than two R groups being arylaliphatic or cycloaliphatic which have only one carbon atom between the cycle and the nitrogen atom or being saturated alicyclic and there are at least 3 or more carbon atoms between the ester generating groups and the nitrogen atom.The total amount of the NR.sub.

Abstract: Bicomponent polyester filaments are disclosed, wherein the filaments are made of at least two different, substantially unmixed components, each present in an amount of at least 20% by weight of the total filament, one component being polyethylene terephthalate and the other component being polybutylene terephthalate which has been sparingly crosslinked with trimethylolpropane.The bicomponent polyester filaments of the present invention have excellent physical properties and especially improved permanency of crimping. The filaments may be used to manufacture woven and knit materials, and are especially useful in the manufacture of hosiery, wherein the resulting hosiery articles have excellent wear properties.

Abstract: This document discloses a stator member for rollers used in the thermal treatment of elongated materials such as filaments, yarns, slivers, rovings, etc. The structure comprises a metal support, an electric insulating spray on the support, a resistor, another layer of electrical insulator spray to cover the first coating and embedded therein and a spray on layer to construct a friction surface.

Abstract: The invention concerns new difficulty inflammable polyesteramide filaments, threads, fibers and films.These filaments, threads, fibers or films consist of a polymer obtained from the reaction of at least one aromatic diisocyanate and aromatic diacids, at least one of said diacids containing one or more ester groups.These new yarns, fibers and films are employed in all fields in which properties of low inflammability are desired.