The present disclosure relates to polymer resins, fibers, and yarns with permanent antimicrobial activity, and a method of producing the same. In one embodiment, the antimicrobial polymer resin comprises a polymer having less than 2500 ppm of zinc dispersed within the polymer, less than 1000 ppm of phosphorus, wherein the weight ratio of zinc to phosphorus is at least 1.3:1 or less than 0.64:1.

The present disclosure relates to polymer resins, fibers, and yarns with permanent antimicrobial activity, and a method of producing the same. In one embodiment, the antimicrobial polymer resin comprises a polymer having less than 2500 ppm of zinc dispersed within the polymer, less than 1000 ppm of phosphorus, wherein the weight ratio of zinc to phosphorus is at least 1.3:1 or less than 0.64:1.

The present invention is a multi-component fiber includes a core and a sheathing surrounding the core. The core includes a first aliphatic polyester or copolymer of an aliphatic polyester. The sheathing includes a second aliphatic polyester or copolymer of an aliphatic polyester or a polyamide, and a hydrophobic agent. The second aliphatic polyester or copolymer of an aliphatic polyester or a polyamide has a melt flow index of between about 0.5 and about 19.5 g/10 min using a 2.16 Kg weight at 190° C.

The present invention is a multi-component fiber includes a core and a sheathing surrounding the core. The core includes a first aliphatic polyester or copolymer of an aliphatic polyester. The sheathing includes a second aliphatic polyester or copolymer of an aliphatic polyester or a polyamide, and a hydrophobic agent. The second aliphatic polyester or copolymer of an aliphatic polyester or a polyamide has a melt flow index of between about 0.5 and about 19.5 g/10 min using a 2.16 Kg weight at 190° C.

Provided are a thermoplastic resin composition and a molded product produced therefrom, and the thermoplastic resin composition includes 100 parts by weight of a base resin including (A) 65 to 85 wt % of a polycarbonate resin, (B) 7 to 20 wt % of an acrylic rubber-modified aromatic vinyl-based graft copolymer, and (C) 7 to 20 wt % of an aromatic vinyl-vinyl cyanide copolymer; (D) 0.7 to 5 parts by weight of zinc oxide (ZnO); and (E) 7 to 15 parts by weight of a block copolymer including a polyether segment and a polyamide segment, wherein the (D) zinc oxide has an average particle diameter of 0.5 to 3 μm, a peak position 2 θ value obtained by X-ray diffraction (XRD) analysis of 35 to 37°, and a crystallite size according to Equation 1 of 1,000 to 2,000 Å. Equation 1 is the same as disclosed in the specification.

Provided are a thermoplastic resin composition and a molded product produced therefrom, and the thermoplastic resin composition includes 100 parts by weight of a base resin including (A) 65 to 85 wt % of a polycarbonate resin, (B) 7 to 20 wt % of an acrylic rubber-modified aromatic vinyl-based graft copolymer, and (C) 7 to 20 wt % of an aromatic vinyl-vinyl cyanide copolymer; (D) 0.7 to 5 parts by weight of zinc oxide (ZnO); and (E) 7 to 15 parts by weight of a block copolymer including a polyether segment and a polyamide segment, wherein the (D) zinc oxide has an average particle diameter of 0.5 to 3 μm, a peak position 2 θ value obtained by X-ray diffraction (XRD) analysis of 35 to 37°, and a crystallite size according to Equation 1 of 1,000 to 2,000 Å. Equation 1 is the same as disclosed in the specification.

A method for manufacturing a smart card capable of achieving excellent connection reliability and bending resistance, a smart card, and a conductive particle-containing hot-melt adhesive sheet. A conductive particle-containing hot-melt adhesive sheet containing solder particles of a non-eutectic alloy in a binder containing a crystalline polyamide having a carboxyl group is interposed between a card member and an IC chip and subjected to thermocompression bonding. The crystalline polyamide having a carboxyl group improves the solder wettability of the non-eutectic alloy, thereby achieving excellent connection reliability. This effect is considered to be a flux effect due to the carboxyl group present in the crystalline polyamide, and as a result, it is possible to prevent the decrease in the elastic modulus of the adhesive layer which would be caused by the addition of a flux compound and to achieve excellent bending resistance.

A method for manufacturing a smart card capable of achieving excellent connection reliability and bending resistance, a smart card, and a conductive particle-containing hot-melt adhesive sheet. A conductive particle-containing hot-melt adhesive sheet containing solder particles of a non-eutectic alloy in a binder containing a crystalline polyamide having a carboxyl group is interposed between a card member and an IC chip and subjected to thermocompression bonding. The crystalline polyamide having a carboxyl group improves the solder wettability of the non-eutectic alloy, thereby achieving excellent connection reliability. This effect is considered to be a flux effect due to the carboxyl group present in the crystalline polyamide, and as a result, it is possible to prevent the decrease in the elastic modulus of the adhesive layer which would be caused by the addition of a flux compound and to achieve excellent bending resistance.

Multi-layered golf balls having at least one layer made of a foamed silicone composition are provided. Multi-layered golf balls having at least one layer made of non-foamed silicone elastomer composition also are provided. For example, three-piece, four-piece, and five-piece golf balls containing different core and cover structures can be made. The foamed silicones have good thermal stability and durability without sacrificing resiliency. The non-foamed silicone elastomers have high elongation, tensile strength, chemical/fluid-resistance, and weatherability properties. These compositions can be used to form any layer, for example, core, intermediate, or cover, in the golf ball.

The present invention relates to a manufacturing method of a natural fiber composite material for injection molding using a reduced nozzle heating jig, and particularly, to a manufacturing method of a natural fiber composite material for injection molding using a reduced nozzle heating jig, which is configured to include: combining natural fibers and synthetic fibers (S1); heat-pressing the combined ply yarn while passing through a reduced nozzle heating jig 100 and melting and pressing the synthetic fibers and fusing the synthetic fibers to the natural fibers (S2); and palletizing the mixed ply yarn (S3).