Abstract: A moldable polyester-amide is disclosed characterized in that it is derived from:An aromatic organic diacid (1) whose carboxyl groups are directly attached to an aromatic ring in the para-position;A primary diol (2) of the general formula HO--CH.sub.2 --R--CH.sub.2 --OH in which R represents either a straight aliphatic chain comprising at least 4 carbon atoms, or an aliphatic chain branched by alkyl or aryl groups, or an aromatic ring; andA salt of an organic diacid (3) and a primary diamine of aliphatic character (4);And being further characterized in that it possesses a degree of whiteness equal to or greater than 80% and a luminosity equal to at least 35%, as defined in standard specification ASTM-E 308-66, a number of --NH.sub.2 end groups equal to or greater than 30 per ton of polymer, preferably greater than 40.A shaped article (e.g., a yarn, a film, or a fiber) derived from the aforesaid polyester-amide is also disclosed.

Abstract: Side-by-side bicomponent polyester filaments, and process for making same, are disclosed, wherein the filaments are of polyethylene terephthalate and polybutylene terephthalate, with the polybutylene terephthalate being sparingly cross-linked by at least about 0.20 mole per cent of cross-linking agent. The sparingly cross-linked polybutylene terephthalate has a melted state viscosity VF of at least about 2000 poises at 260.degree. C. The polyethylene terephthalate partly envelopes the sparingly cross-linked polybutylene terephthalate, in cross-section, so as to cover at least about 45% of the periphery of the sparingly cross-linked polybutylene terephthalate.

Abstract: New compounds are disclosed for obtaining novel polymeric flameproofing agents. The former are diphenols of the general formula: ##STR1## where n = 0 or 2. The latter are aromatic polyphenylphosphonates having recurring units of the general formula: ##STR2## in which n equals 0 or 2, and are obtained by reacting (I) with phenylphosphonyl chloride. The latter are especially useful for the flameproofing of polyester and finished or shaped articles based on polyester.

Abstract: A machine for continuous stranding and cabling, for the manufacture of a cable from single wires, the machine including a stranding battery provided with a plurality of single-twist or double-twist delivery stranding spindles, a double-twist cabling device, which includes means for winding up the cable located after the stranding battery, and two twisters associated with the cabling device. Traction means are provided for the strands and for the cable, with two traction stages, one at the stranding stage and one at the cabling stage. The peripheral or drive speed of the traction means at the stranding stage is equal to or greater than the peripheral speed of the traction means at the cabling stage, whereby the tension upstream of the cabling means is reduced.

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 pressure 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 high speed knitting machine and method, in which yarn is fed to the needles of the knitting machine by fluid under pressure in a feed conduit, in such a way that it is directed into the hooks of the needles tangentially to the stems of the needles.

Abstract: The present invention relates to masterbatches in the form of granules or pellets, as well as the process for obtaining these.These granules or pellets consist of:At least 37.5% of polycondensates serving as a carrier, of which at least a part consists of the same polycondensate as that which is to be shaped, in the form of a powder of particle size at least 50 microns,From 12.5 to 40% of a binder of melting point 70.degree. - 100.degree. C which is compatible with the polycondensate to be shaped, andUp to 50% of at least one compound intended to modify the polycondensate to be shaped.They are used with advantage for modifying polycondensates, particularly polyamides and polyesters, intended for spinning or moulding.

Abstract: A yarn carrier especially for use with packages of pre-oriented yarn has a pair of grooves therein which accommodate extra thicknesses of yarn which accumulate at areas on the carrier where reversal of the yarn takes place. Engagement of these thicknesses by a winding roll does not result in faults in the yarn because the thicknesses are urged by the winding roll into the grooves.

Abstract: Bicomponent polyester fibers exhibiting a hand similar to wool, a crimp contraction less than 60%, and a crimp frequency of at least 7 half-waves per centimeter, and the process for producing the same, are disclosed.These crimped bicomponent fibers are useful in the textile field, particularly to at least partially replace the wool in polyester/wool blends.

Abstract: The present invention relates to shaped polyester articles which have good flame resistance. These articles comprise a polymethylene copolyester containing 60 to 95 mol % of terephthalate units and 5 to 40 mol % of isophthalate units and they contain 2 to 40% by weight of a phosphorus and/or halogen compound.They are employed in the textile industry and, in particular, in the furniture industry as well as in plastic films and materials for the building industry.

Abstract: Apparatus 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 channel lies in the wall of a cylindrical static body and is tangent to the inner wall of said body. 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: Disclosed are block-type aryl copolyesters, the process for obtaining these as well as the filaments produced therefrom, and the process for obtaining such filaments.The aryl copolyesters contain from 10 to 90% of recurring flexible units of the formula ##STR1## WHERE R is an aliphatic, alicyclic or araliphatic radical, x is an integer from 2 to 6, and y = 0 or 1, andFrom 90 to 10% of recurring rigid units of the formula ##STR2## and have an inherent viscosity of at least 0.25. The raw spun filaments produced therefrom possess a modulus of elasticity of at least 1,000 g/tex, and preferably at least 1,500 g/tex, and are obtained by melt-spinning at a temperature such that the copolyester is optically anisotropic at rest and in the relaxed state, followed by winding up the filament in a per se known manner. Such filaments can be used advantageously as reinforcing filaments.

Abstract: A device for introducing yarn into a pneumatic yarn texturizing means, in which the yarn is positioned across the inlet orifice of the texturizing means, a stream of fluid is forced against the yarn to introduce it into the orifice in the form of a loop and a yarn cutting device, located downstream of the orifice in the direction of movement of the yarn, is actuated, its operation being synchronized with that of the fluid stream.

Abstract: A process of making polyvinylidene fluoride yarns and fibers of homogeneous structure and good dry strength includes the steps of spinning the solution of the polymer into a coagulating bath containing 45 to 60% by weight aprotic polar organic solvent and 40 to 55% by weight water, stretching the filaments in air to a ratio of 1.5 to 5x and then in boiling water to a ratio of 1.5 to 4x (overall stretching ratio of 3x to 6.5x) and then washing in water at room temperature.

Abstract: A yarn-stuffing system is disclosed in which the yarn is drawn in and expanded by a pneumatic nozzle and the yarn and air are conducted longitudinally to a discharge zone remote from the nozzle. The air is vented laterally in the discharge zone while the yarn is inhibited in its discharge to be stuffed and is periodically released to emerge stepwise from the discharge zone. The preferred apparatus includes a constricted yarn-stuffing and discharge zone which is expandable to allow slip of the stuffed yarn until pressure is relieved behind the stuffed yarn and returns to its constricted position until the pressure again rises as a result of obstruction of the vent ports.

Abstract: The invention relates to a process and an apparatus for continuously shrinking a fibrous sheet containing heat-shrinkable fibers by means of a hot liquid wherein a sheet is driven by a continuous, stable film formed on the emerged surface of a series of aligned cylinders with parallel axes rotated in the direction of the advance of the sheet and partially immersed in a hot liquid without the sheet being in contact with the cylinders. The invention makes it possible to shrink uniformly and at a high speed heat-shrinkable fibers obtained from an aqueous dispersion thereof by a paper-making method.

Abstract: The invention relates to shaped structures, e.g., filaments, fibers or films based on poly(vinylidene fluoride) possessing good dyeing affinity for acid and metal-containing dyestuffs and comprising a fiber and filament forming mixture of poly(vinylidene fluoride) and a copolymer containing 80-95% by weight of methyl methacrylate and 5-20% by weight of a compound which contains a quaternary ammonium group and is copolymerizable with methyl methacrylate.The filaments and fibers according to the invention can advantageously be used in the textile field.

Abstract: A method for knitting fabrics without needles by sequentially forming loops in adjacent, parallel yarns with each loop being passed through its immediately preceeding loop. The apparatus includes a looping member which rotates on its own axis adjacent the yarns and traverses along transversely of the path of the yarns to successively engage, loop and release each yarn.

Abstract: A portable monitor unit for knitting machines and particularly suitable for circular knitting machines including a yarn speed sensor pulsing a numeral display counter via a gate, a needle detector controlling the gate via a settable counter, a frequency meter, and a switch for selectively engaging the signals of the yarn sensor, needle detector and frequency meter to display yarn length per needle stitch, yarn length per unit time, and rpm of the knitting machine.

Abstract: A process for simultaneously texturizing a plurality of yarns including feeding a plurality of yarns separately through the inlet of a texturizing device to a cylindrical chamber, supplying a hot compressed fluid to the cylindrical chamber to advance the yarns therein, the hot compressed fluid escaping into an outer closed chamber, and maintaining the outer chamber at a pressure less than the feed pressure of the hot compressed fluid and greater than atmospheric pressure.