Abstract: Disclosed is a PET tire cord which has a flat spot index (FSI) defined by the following Calculation Formula 1 of 5.0% or less: Flat Spot Index (FSI)(%)=(L1?L2)/L0×100??Calculation Formula 1 wherein, L0 is an initial length of the tire cord, L1 is a length of the tire cord that is measured after providing a load corresponding to 13% of the strength at break of the cord for 5 minutes at 120° C. and cooling the same to 24° C. while maintaining the load, and L2 is a length of the tire cord that is measured after providing a load corresponding to 13% of the strength at break of the cord for 5 minutes at 120° C. and cooling the same to 24° C. while remaining the load of 0.01 g/d only.

Abstract: The present invention relates to a drawn PET fiber that can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, a PET tire cord, and a tire including the same. The drawn PET fiber may be a fiber including 90 mol % or more of PET, of which the crystallinity is 53% or more, the amorphous orientation factor (AOF) is 0.15 or less, and the birefringence index is 0.14 to 0.16, after heat-treating the same at 230° C. for 1 minute under the initial load of 20 g/1000 d.

Abstract: The present invention relates to an undrawn PET fiber and a drawn PET fiber those can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, and a tire cord including the same. The undrawn PET fiber may be a fiber of which the crystallinity is 25% or more, the birefringence index is 0.085 to 0.11, the amorphous orientation factor (AOF) is 0.15 or less, and the melting temperature (Tm) is 258° C. or more.

Abstract: The present invention relates to a drawn PET fiber which has good dimensional stability and can be applied to a cap ply cord for a pneumatic tire, a PET tire cord, their preparation methods, and a tire including the same.

Abstract: The present invention relates to a poly(ethyleneterephthalate) drawn fiber, which is able to provide a poly(ethylene terephthalate) tire-cord showing superior strength and dimensional stability without a PCI process after tire vulcanization, a poly(ethylene terephthalate) tire-cord and a manufacturing method thereof. The poly(ethyleneterephthalate) drawn fiber has a predetermined L/S value of 2.0 kg/% or more after heat treatment at a temperature of 180° C. under an initial load of 0.02 g/d for 2 minutes.

Abstract: The present invention relates to a drawn PET fiber that can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, a PET tire cord, and a tire including the same. The drawn PET fiber may be a fiber including 90 mol % or more of PET, of which the crystallinity is 53% or more, the amorphous orientation factor (AOF) is 0.15 or less, and the birefringence index is 0.14 to 0.16, after heat-treating the same at 230° C. for 1 minute under the initial load of 20g/1000d.

Abstract: The present invention provides cellulose-based fibers including cellulose and at least one polymer selected from the group consisting of a polysiloxane, a polyacrylic acid, a polyacrylamide, an m-aramid, and a polyvinylalcohol/polystyrene copolymer, and a tire cord including the same. Furthermore, the cellulose-based fibers of the present invention have an advantage in superior elongation and tenacity of the prior cellulose fibers by blending at least one polymer having a functional group that is capable of a hydrogen bond with a hydroxyl group of a cellulose molecule.

Abstract: The present invention relates to a film for a tire inner liner including a base film layer including a copolymer or a mixture of a polyamide-based resin and a polyether-based resin, and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, and having low shrinkage rate when elongated at a high temperature and then cooled to room temperature, and a method for manufacturing the same.

Abstract: This disclosure relates to a film for a tire inner liner including: a base film including a copolymer or mixture of a polyamide-based resin and a polyether-based resin; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, and a method for manufacturing the same.

Abstract: This invention relates to a film for a tire inner liner, which includes a copolymer including a polyamide-based segment and 5˜50 wt % of a polyether-based segment relative to the total weight of the film, and has a thickness 30˜300 ?m, and to a method of manufacturing the film for a tire inner liner, including polymerizing a polyamide-based resin or its precursor with 5˜50 wt % of a polyether-based resin relative to the total weight of the film, thus preparing a copolymer, and melting and extruding the copolymer, thus forming a film.

Abstract: The present invention is relates to lyocell filament fibers having fatigue resistance and durability, of which the dimensional stability at high temperature and the high speed driving performance are good, and a tire cord prepared therefrom.

Abstract: Disclosed are a lyocell filament fiber and a cellulose-based tire cord. The lyocell filament fibers and the cellulose based tire cord have good dimensional stability in a highly humid state and thus the tenacity, the elongation, and the modulus are superior to common cellulose based fibers, such as rayon and so on. Their property maintaining rate at the post manufacturing process is high and the processibility is good.

Abstract: The present invention provides cellulose-based fibers including cellulose and at least one polymer selected from the group consisting of a polysiloxane, a polyacrylic acid, a polyacrylamide, an m-aramid, and a poly vinylalcohol/polystyrene copolymer, and a tire cord including the same. Furthermore, the cellulose-based fibers of the present invention have an advantage in superior elongation and tenacity of the prior cellulose fibers by blending at least one polymer having a functional group that is capable of a hydrogen bond with a hydroxyl group of a cellulose molecule.

Abstract: Disclosed is a PET tire cord which has a flat spot index (FSI) defined by the following Calculation Formula 1 of 5.0% or less: Flat Spot Index (FSI) (%)=(L1?L2)/L0×100??Calculation Formula 1 wherein, L0 is an initial length of the tire cord, L1 is a length of the tire cord that is measured after providing a load corresponding to 13% of the strength at break of the cord for 5 minutes at 120° C. and cooling the same to 24° C. while maintaining the load, and L2 is a length of the tire cord that is measured after providing a load corresponding to 13% of the strength at break of the cord for 5 minutes at 120° C. and cooling the same to 24° C. while remaining the load of 0.01 g/d only.

Abstract: The present invention relates to an undrawn PET fiber and a drawn PET fiber those can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, and a tire cord including the same. The undrawn PET fiber may be a fiber of which the crystallinity is 25% or more, the birefringence index is 0.085 to 0.11, the amorphous orientation factor (AOF) is 0.15 or less, and the melting temperature (Tm) is 258° C. or more.

Abstract: The present invention relates to a drawn PET fiber that can provide a cap ply cord and the like showing more improved modulus and good dimensional stability, a PET tire cord, and a tire including the same. The drawn PET fiber may be a fiber including 90 mol % or more of PET, of which the crystallinity is 53% or more, the amorphous orientation factor (AOF) is 0.15 or less, and the birefringence index is 0.14 to 0.16, after heat-treating the same at 230° C. for 1 minute under the initial load of 20g/1000d.

Abstract: The present invention relates to a drawn PET fiber which has good dimensional stability and can be applied to a cap ply cord for a pneumatic tire, a PET tire cord, their preparation methods, and a tire including the same.

Abstract: The present invention relates to a drawn PET fiber which has good dimensional stability, thereby increases the high speed driving performance of a tire, a PET tire cord, their preparation methods, and a tire including the same. The drawn PET fiber may includes 90 mol % or more of PET and may be a fiber of which a creep rate is 5.5% or less when the drawn PET fiber is fixed under the initial load of 0.01 g/d and is kept for 24 hours under the load of 0.791 g/d and the temperature of 100° C. Furthermore, the PET tire cord may be a cord of which a creep rate is 4.0% or less when the PET tire cord is fixed under the initial load of 0.01 g/d and is kept for 24 hours under the load of 0.791 g/d and the temperature of 100° C.