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 new class of high modulus polypropylene multifilament fiber and/or yarn is provided. Such a multifilament fiber and/or yarn exhibits an exceptional combination of high strength and toughness with low weight and density. The inventive fibers thus permit replacement of expensive polymeric fibers within certain applications with lower cost alternatives, or replacement of high density components with such low density fibers, without sacrificing strength or durability. Such multifilament fibers are produced through melt-spinning processes and exhibit highly unique microstructures therein, including significant void volumes, interspersed and crossed voids, and nanofilament bridges within such voids. Such microstructural characteristics appear to impart the exceptional properties noted above.

A new mat (1, 101), for forming an artificial lawn (9), in particular an artificial grass sports field, is disclosed whereby the mat (1, 101), comprises a cushioning layer (5, 105) and artificial fibers (4, 104) tufted through this cushioning layer (5, 105). With this new mat (1, 101) construction, the artificial lawn (9) also comprising an infill material (8), has improved shock absorption characteristics.

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), wherein the polymer mixture is at least a three-phase system, wherein the polymer mixture comprises a first polymer (402), a second polymer (404), and a compatibiiizer (406), wherein the first polymer and the second polymer are immiscible, wherein the first polymer forms polymer beads (408) surrounded by the compatibiiizer within the second polymer; extruding (102) the polymer mixture into a monofilament (606); quenching (104) the monofilament; reheating (106) the monofilament; stretching (108) the reheated monofilament to deform the polymer beads into threadlike regions (800) and to form the monofilament into an artificial turf fiber (1004); incorporating (110) the artificial turf fiber into an artificial turf carpet (1002).

It is provided that a multifilament and a braid that are capable of being processed into products in a wide range of temperature and are excellent in dimensional stability and abrasion resistance. A multifilament comprising 5 or more monofilaments, wherein the multifilament contains polyethylene having an intrinsic viscosity [] of 5.0 dL/g or more and 40.0 dL/g or less and substantially including ethylene as a repeating unit, and wherein a difference between a maximum value and a minimum value in a ratio of a diffraction peak intensity of orthorhombic crystal (200) plane to a diffraction peak intensity of orthorhombic crystal (110) plane in a monofilament cross section is 0.22 or less.

A new class of high modulus polypropylene multifilament fiber and/or yarn is provided. Such a multifilament fiber and/or yarn exhibits an exceptional combination of high strength and toughness with low weight and density. The inventive fibers thus permit replacement of expensive polymeric fibers within certain applications with lower cost alternatives, or replacement of high density components with such low density fibers, without sacrificing strength or durability. Such multifilament fibers are produced through melt-spinning processes and exhibit highly unique microstructures therein, including significant void volumes, interspersed and crossed voids, and nanofilament bridges within such voids. Such microstructural characteristics appear to impart the exceptional properties noted above.

An extrusion apparatus suitable for manufacturing artificial turf polymer fiber, in particular from LLDPE that is free of fiber splitting, wherein the extrusion apparatus is characterized in that a ratio of an equivalent diameter of the nozzle outlet over an axial length of the inner channel of the nozzle is from 0.90 to 1.10, or from 0.95 to 1.05.

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.

Provided is a pneumatic tire in which the performance is to be improved while suppressing an increase in the thickness by using a reinforcing material applicable to such an insert member or the like by which a target reinforcing performance can be attained while suppressing an increase in the thickness. Provided is a pneumatic tire including: a pair of bead portions 11; a pair of side wall portions 12; and a tread portion 13, and including a carcass layer 2 composed of at least one carcass ply extending toroidally between bead cores 1 embedded in the pair of bead portions respectively as a skeleton. A reinforcing layer 4 using a reinforcing material composed of a core/sheath-type composite fiber (C) in which a core portion is made of a high melting point polyolefin-based resin (A) having a melting point of 150 C. or higher and a sheath portion is made of a low melting point polyolefin-based resin (B) having a melting point of 80 C. or higher and lower than 150 C. is provided on at least the outside of the bead core in the tire radial direction.

The present disclosure relates to a compact polymer gel consisting of disentangled ultrahigh molecular weight polyethylene (dis-UHMWPE), at least one nucleator, at least one filler and at least one fluid medium. The present disclosure also provides a process for the preparation of the compact polymeric gel and fibers from the compact polymeric gel of both low and high denier values. The fibers prepared in accordance with the present process have tensile strength ranging from 2.5 to 13 GPa, tensile modulus ranging from 100 to 270 GPa.