Abstract: A process for preparing polyester continuous filamentary material by (a) extruding the polyester material while molten to form filaments, (b) solidifying the molten filaments by cooling them to a temperature at or below their glass transition point, (c) drawing the solidified filaments within a hot drawing zone, (d) subjecting the drawn filaments to a finishing treatment, (e) advancing the finished filaments around first and second godet rollers and, while the filaments are disposed between the first and second godet rollers, subjecting the filaments to heat treatment by advancing the filaments through a heat treatment zone without contacting the filaments with a solid hot surface, the filaments being advanced through the heat treatment zone under a given tension T, and (f) winding the filaments at a speed of at least 4,500 m/min under a given tension t. the respective tensions T and t lie within the ranges0.5 t.ltoreq.T.ltoreq.0.5-0.5 t (I)0.05.ltoreq.t.ltoreq.0.

Abstract: A polyolefin BMF web made from a mixture of polypropylene and surfactant can have high wet strength when a) the surfactant is nonionic and b) the surfactant is mixed with the polypropylene at a static mixer that interconnects the extruder and the BMF die. By so postponing the addition of the surfactant, it is protected from both the exceedingly high temperatures of the extruder and from the high shearing forces within the extruder. The surfactant also is heated to high temperatures for a much shorter time than if it were premixed with the polypropylene.

Abstract: Industrial yarn is used as a reinforcement in a wide variety of manufactured articles, such as conveyor belts, drive belts, V-belts, seat belts, hoses, tires, and the like. It is often important for the industrial yarn to have high tenacity, high modulus and dimensional stability. The present invention discloses an improved process for manufacturing highly uniform industrial yarn which exhibits high tenacity, high modulus and very low shrinkage. The present invention more specifically discloses a process for manufacturing industrial yarn having high tenacity, high modulus and low shrinkage which comprises melt spinning polyethylene terephthalate into spun filaments and subsequently drawing the spun filaments in a heated zone to a draw ratio of at least about 1.05:1; wherein the spun filaments have a birefringence of at least about 0.075 and a crystallinity of at least about 10%; wherein the spun filaments are in the heated zone for a residence time of at least 0.

Abstract: A method for the production of stopcocks for medical devices including a plug and a housing made of plastic. First one of the two parts (1 or 9) is injected and afterwards the other part (9 or 1) is injected into or around the already manufactured part (1 or 9).

Abstract: A thermoplastic ceramic molding composition comprised of about 40 to 70 volume percent of a binder, consisting essentially of an organic acid containing from 12 to 26 carbon atoms per molecule and a polyisobutylene polymer having a molecular weight between about 8,700 and 135,000, and about 30 to 60 volume percent of a ceramic powder is disclosed. The molding composition can be thermoplastically extruded into elongate ceramic bodies that can be uniformly elongated many times the original length of the ceramic body to form, for example, very fine diameter fibers or filaments suitable for sintering into a polycrystalline ceramic fiber or filament having a very fine diameter.

Abstract: In a method of producing mesophase pitch based carbon fibers, including the steps of melt-spinning a mesophase pitch through a nozzle (1) having at least one pair of a counter-bore (2) and a circular capillary (3) to form a pitch fiber and subjecting the pitch fiber to an infusible treatment, a carbonization treatment, and if necessary, a graphitization treatment, to form a carbon fiber, the nozzle has a degree of asymmetry .phi. of from 0.1 to 0.9, .phi. being defined by the following equation .phi.=S.sub.A /S.sub.B, wherein S.sub.A is an area of an inscribed circle in a contour of the cross-section of the counter-bore, which circles is perpendicular to the nozzle axis and has a center on the axis of the capillary and inscribed and S.sub.B is a total area of the cross-section of the counter-bore.

Abstract: Modifying a polyester with special chain-brancher residues in carefully controlled amounts to provide a draw-texturing feed yarn that can be draw-textured at a speed of 1,000 mpm without excessive filament breaks, and with other advantages in the resulting textured yarns, such as improved bulk and dyeability over prior polyester yarns that could not be satisfactorily textured under similar conditions.

Abstract: A method for connecting ends of a weather strip made of a rubber material and composed of a base portion and a tubular sealing portion having two chambers which are separated by a rib, includes the steps of inserting each of both ends of a core, which have such a cross-sectional shape as to fill an outward chamber of the two chambers of the tubular sealing portion and press the rib on the base portion, into the outward chamber of each of the ends of the weather strip so that the ends of the weather strip are coupled by the core, the ends of the weather strip, which are coupled by the core are set within a cavity of a mold, a rubber material is poured into the cavity, and the core is removed from the ends of the weather strip after molding.