The present invention relates to a thermoplastic elastomer yarn with improved unwinding, weaving and yarn shrinking property, and a manufacturing method thereof. According to the present invention, the thermoplastic elastomer yarn according to the present invention is excellent in improved unwinding, weaving and yarn shrinking property. Furthermore, the thermoplastic elastomer yarn according to the present invention is excellent in yarn shrinkage rate, unwinding, weaving, tensile strength and elongation rate to be adequate for manufacturing textile fabric and footwear in terms of physical properties.

The resin composition for melt spinning of the present invention is a filament having a melt viscosity of 250 Pas or less at 200° C. and a shear rate of 0.1 s.sup.−1 and a tensile strength of 10 MPa or more. The filament can be produced by forming a molten liquid of a resin composition having a melt viscosity of 250 Pas or less at 200° C. and a shear rate of 0.1 s.sup.−1 into a filament shape to provide a formed material, and conveying and concurrently cooling the formed material. The present invention also provides a resin composition for melt spinning being a filament, and a method for producing fiber using a melt spinning apparatus.

The present invention concerns a multifilament fibre comprising at least one polymer comprising a polyester, and at least one filler comprising calcium carbonate. The present invention further relates to a process of producing such a multifilament fibre as well as the use of calcium carbonate as filler in a multifilament fibre comprising at least one polymer comprising a polyester.

A method for forming porous fibers is provided. The fibers are formed from a thermoplastic composition containing a continuous phase, which includes a matrix polymer, and a nanoinclusion additive that is at least partially incompatible with the matrix polymer so that it becomes dispersed within the continuous phase as discrete nano-scale phase domains. The method generally includes traversing a bundle of the fibers over one or more draw bars that are in contact with a fluidic medium (e.g., water). In certain embodiments, for example, the draw bar(s) are submerged in the fluidic medium. The fluidic medium is lower than the melting temperature of the matrix polymer.

A multi-end monofilament production apparatus includes the following sequential process units along monofilaments flow direction: a vertical spinning machine comprising a spinneret and a distribution plate below the spinneret; a water bath for quenching spun monofilaments; a vacuum jet device for transferring monofilaments from the water bath; a steam jet able to provide superheated steam at a temperature within the range between 300° C. and 380° C. and at a pressure within the range between 4 bars and 5 bars; a drawing unit; and a monofilament winder for winding monofilaments at a speed exceeding 500 m/min. The present invention further proposes a method for multi-end monofilament yarn production.

The invention provides for a method of manufacturing artificial turf (1000), The method comprising the steps of: —creating (100) a polymer mixture (100, 400, 500) comprising at least one polymer and a nucleat ing agent for crystallizing the at least one polymer; —extruding (102) the polymer mixture into a monofilament (606); —quenching (104) the monofilament; —reheating (106) the monofilament; —stretching (108) the reheated monofilament to form the monofilament into an artificial turf fiber (1004), wherein during the stretching the nucleating agent boosts the creation of crystalline portions of the at least one polymer within the monofilament; —incorporating (110) the artificial turf fiber into an artificial turf backing, thereby mechanically fixing the monofilaments of the arranged artificial turf fibers in the artificial turf backing.

FIG. 2a

FIG. 2b

FIG. 2c

A wire drawing process of a light storage wire includes a feeding step, a mixing step, a first drying step, a hot melt extrusion step, a first cooling step, a shaping/organizing wire step, a hot-temperature remodeling step, a stretching step, a second cooling step, a strand winding/rolling step, and a second drying step.

A method of manufacturing artificial turf includes the steps of: creating a polymer mixture including at least one polymer and a nucleating agent for crystallizing the at least one polymer, extruding the polymer mixture into a monofilament; quenching the monofilament; reheating the monofilament; stretching the reheated monofilament to form the monofilament into an artificial turf fiber, wherein during the stretching the nucleating agent boosts the creation of crystalline portions of the polymer within the monofilament; incorporating the artificial turf fiber into an artificial turf backing, thereby mechanically fixing the monofilaments of the arranged artificial turf fibers in the artificial turf backing.

A net structure manufacturing apparatus (1) comprising: a nozzle (10) having a discharge hole (11) from which melted thermoplastic resin is extruded so as to be formed as a filament; a water tank (20) disposed below the nozzle (10); a conveying device (30) provided to the water tank (20) and configured to convey a net structure (60) having a resin as the filament (12); and a gas ejection device (40) provided to the water tank (20) and configured to eject gas.

A method of manufacturing artificial turf creating a liquid polymer mixture, wherein the polymer mixture is at least a two-phase system. A first one of the phases includes a first polymer and a first dye, and a second one of the phases of the polymer mixture includes a second polymer and a second dye. The second dye has a different color than the first dye, the second polymer being of the same or of a different type as the first polymer. The first and the second phase are immiscible, the first phase forming polymer beads within the second phase. The method further includes extruding the polymer mixture into a monofilament including a marbled pattern of the first and second color; quenching the monofilament; reheating the monofilament; stretching the reheated monofilament to deform the polymer beads into threadlike regions and to form the monofilament into an artificial turf fiber; and incorporating the artificial turf fiber into an artificial turf backing.