1274 results about "Single filament" patented technology

The invention discloses a processing method for a mercerized knitted bedding fabric. The processing method mainly adopts a production technology of double-calcination single yarn, first refining and then mercerizing, and grey yarn is sequentially subjected to yarn singeing, yarn steaming, knitting, grey cloth singeing, refining, dewatering, cylinder drying, mercerizing, dyeing, dewatering, scutching, drying, printing, forming and pre-shrinking and finally is checked and stored in a cabin. The mercerized knitted bedding fabric has the advantages of high conformality, low shrinkage, wide width and the like, and can meet the requirement on the knitted bedding fabric; compared with a woven fabric, the mercerized knitted bedding fabric has higher elasticity, water absorption and air permeability, is more smooth and fine in handfeel, and has better comfortableness.

A pressure vessel (2) for the storage of fluid has a core (10) made of metal or polymer and is wrapped either completely or partially from outside with a high strength fibers (21, 22) for reinforcement wherein one of the reinforcing fibers is a metal wire (21) of a single filament or cables of multi filaments having strength from 2000 MPa to 6000 MPa. The wire has a plastic ductility of over 20% in reduction in area (RA) at tensile fracture. The metal wire (21) is made of steel or nickel or titanium or their respective alloys. The core (10) of the vessel (2) is first wrapped with a resin covered ceramic fibers such as carbon, fiberglass and subsequently wrapped with the metal wire (21) with or without other fibers (22). The metal wires (21) can be of different diameters in parallel or cabled forms.

Poly(L-lactic acid) (200,000 in weight average molecular weight and 175° C. in melting point) is melt-spun at 200° C. and drawn to obtain a single filament having a diameter of 0.05 mm. Two lengths of the filament are twisted to prepare a filamentous substance, which is cut to a length of 7 cm to obtain a vasoocclusive article 1 in the form of a single line. The occlusive article is free of the problems conventionally experienced.

A degradable copolymer filament comprising an internal structure having the following separate phases: (a) a matrix phase comprised as a primary component of a polymer segment which exhibits a tensile Young's modulus of 2 GPa or less and a strength retention of 50% or more after two weeks in water at 37 DEG C., pH 7.3, and (b) a micro-dispersed phase comprised as a primary component of a polymer segment which exhibits a tensile strength of 200 MPa or more and a strength reduction greater than the matrix phase in water at 37 DEG C., pH 7.3. The weight ratio of each component in the matrix phase and dispersed phase is 50:50 to 95:5, respectively, and the dispersed phase a needle structure oriented by stretching in the fiber direction. A degradable monofilament having an excellent mechanical strength and flexibility, moderate hydrolyzability, high ligature stability and being suitable as a material of surgical absorbable suture can be obtained. A preparation process is also provided.

The invention discloses a melt direct spinning superfine denier terylene FDY filament and a preparation process thereof. The superfine denier terylene FDY filament is prepared by the following steps: adopting a production line of a melt direct spinning one-step method, using a spinning plate with the diameter of capillary of 0.15 to 0.2mm, L/D of 2.6 to 3.6 and diameter of plate surface of 70 to 90mm, installing fairing in a fiber cooling area and adopting a two-way oil feeding system to directly produce the superfine denier terylene FDY filament; and the obtained dpf (denier per filament) is 0.3 to 0.6, the number of orifices of one strand of filameter is 144F to 192F. The process routine can improve internal quality, simultaneously greatly reduces the processing cost, and has the capability of replacing imported similar products.

The invention discloses a method for testing the interfacial bonding strength of a ceramic fiber-reinforced resin matrix composite material and relates to ceramic fibers. The method comprises the following steps: bonding the ceramic fibers to a hard paper frame by virtue of an instant adhesive, for straightening and solidifying the ceramic fibers; preparing an embedding mold, putting the ceramic fibers and the hard paper frame into the embedding mold, and introducing resin into the embedding mold; after the resin is solidified, cutting an embedded end together with the embedding mold so as to obtain a sample, and polishing; when the embedding depth of the sample is lower than 1mm, bonding the embedded end with a primary cut part by virtue of quick-dry resin after the polishing process; burning out two sides of the paper frame at an un-embedded end by virtue of naked flame, averagely cutting the upper end of the paper frame according to the quantity of the ceramic fibers, and bonding and reinforcing the paper frame by virtue of a hard paperboard with area equal to that of the cut paper frame; firstly fixing the embedded end at a lower clamp of a testing machine, and then fixing a reinforcing section to an upper clamp of the testing machine; carrying out a single-filament draw-out experiment; recording each withdrawal force value given by a testing machine; observing the shape of an withdrawn end, and measuring the maximal withdrawing length of the single fiber; and calculating the interfacial bonding strength between the fiber and the resin.

The invention provides a warp knitting terylene polar fleece carpet which belongs to the terylene fibre product technique field. The carpet includes a flocked yarn and a bottom yarn, the flocked yarn is made of 500-780dtex DTY terylene continuous yarn with 80-100 pieces per meter network, the bottom yarn is made of 167-333dtex FDY terylene yarn, a flocked surface height of the flocked yarn is 5-12mm, wherein, single yarn denier of the DTY terylene continuous yarn is more than or equal to 3.5dtex. The carpet has advantages that processing technique is shortened, production process is more environmentally friendly and cleaning, and cost is lower; the carpet has high impact resistance, better elasticity and hygroscopic property, abrasive resistance is second only to chinlon, high heat and solarization resisting property, no-mildew, no-moth-eaten, easy to dye or print, portable and easy to clean; the carpet is rich in polar sphere sense, has strong third dimension and flexible pattern, the carpet color is novel and shibui, has better visual effect that is suitable to be placed in high class hotel guest room, white-collar apartment, high class chamber, hotel aisle and household bathroom.

A process for preparing poly(trimethylene dicarboxylate) multifilament yarns and monofilaments. One process for preparing poly(trimethylene dicarboxylate) multifilament yarns includes (a) providing a polymer blend including poly(trimethylene dicarboxylate) and about 0.1 to about 10 weight % styrene polymer, by weight of the polymer in the polymer blend, (b) spinning the polymer blend to form poly(trimethylene dicarboxylate) multiconstituent filaments containing dispersed styrene polymer, and (c) processing the multiconstituent filaments into poly(trimethylene dicarboxylate) multifilament yarn including poly(trimethylene dicarboxylate) multiconstituent filaments containing styrene polymer dispersed throughout the filaments. Another process includes spinning at a speed of at least 3,000 m/m and processing a blend including poly(trimethylene dicarboxylate) to form partially oriented poly(trimethylene dicarboxylate) multifilament yarn. A poly(trimethylene terephthalate) yarn including poly(trimethylene terephthalate) multiconstituent filament containing styrene polymer dispersed throughout the multiconstituent filament. The invention is also directed to uses of the filament yarns and monofilament.

A method for making a device for causing thrombosis of an aneurysm, wherein said device comprises a single elastic filament configurable between (i) an elongated, substantially linear configuration, and (ii) a longitudinally-contracted, substantially three-dimensional configuration, said method comprising:

• • providing a sheet of shape memory material;
  • producing a single filament, two-dimensional interim structure from said sheet of shape memory material;
  • mounting said single filament, two-dimensional interim structure to a fixture so that said single filament, two-dimensional interim structure is transformed into said longitudinally-contracted, substantially three-dimensional configuration; and
  • heat treating said single filament, two-dimensional interim structure while it is mounted to said fixture so as to produce said device in its longitudinally-contracted, substantially three-dimensional configuration.

After cellulose fibers and cellulose ester fibers are co-refined, they are fed to a blend tank continuously feeds a wet laid process. The composition in the blend tank includes co-refined cellulose fibers and cellulose ester fibers and one or more additives, and the cellulose ester fibers have a denier per filament (DPF) of less than 3, a cut length of less than 6 mm, crimped, or non-round with a DPF of less than 3.

A separation membrane support substrate characterized by being composed of a laminated nonwoven fabric comprising a front layer as the resin coating layer, a middle layer and a back layer which are integrally formed by heat bonding, and by satisfying the following conditions (1) to (5): (1) The front layer has at least one layer comprising thermoplastic resin filaments with a single filament diameter of 7-30 μm; (2) the middle layer has at least one layer comprising melt blown fibers with a single fiber diameter of no greater than 5 μm, and a fiber basis weight of at least 1 g/m² and comprising no more than 30 wt % of the total fiber basis weight; (3) the back layer has at least one layer comprising thermoplastic resin filaments with a single filament diameter of 7-20 μm, and has a fiber basis weight of 3-40 g/m²; (4) the laminated nonwoven fabric has an apparent density of 0.67-0.91 g/cm³; and (5) the laminated nonwoven fabric has a thickness of 45-110 μm.