Kolon Industries, Inc.

Gi-Woong Kim

Il Kyung Chung

Ok-Hwa Jeon

Sang-Mok Lee

Young-Soo Lee

Young-Se Oh

Si-Min Kim

Young-Jo Kim

Seong-Young Kim

Woo-Chul Kim

Jae-Woong Lee

Sung-ho Park

So-Yeon Kwon

Jae-Hyung Kim

Jung-Hoon Youn

Sung-Ho Park

Jin Wook Heo

Hye-Seung Jin

Ki Jeong Kim

Sin-Ho Lee

Ki-Sang Song

Jong-Cheol Jeong

Tae-Won Son

Duk-Yong Choi

Sang-Min Lee

Byoung-Wook An

Sung-Joong Kim

Disclosed is a polyethylene yarn capable of providing a user with a soft tactile sensation as well as a cooling feeling or a cooling sensation, and also having improved weavability that enables the manufacture of a skin cooling fabrics having excellent pilling resistance, abrasion resistance, cuttability, and sewability, a method for manufacturing the same, and a skin cooling fabric including the same. In a strength-elongation curve of the polyethylene yarn obtained by measuring at ambient temperature, (i) elongation at strength of 1 g/d is 0.5 to 3%, (ii) elongation at strength of 3 g/d is 5.5 to 10%, and (iii) a difference between elongation at strength of 4 g/d and elongation at maximum strength is 5.5 to 25%, and the polyethylene yarn has toughness of 55 to 120 J/mat ambient temperature.

Polyethylene yarn, method for manufacturing the same, and skin cooling fabric comprising the same

This invention relates to fabric for airbag comprising a textile substrate; and a coating layer on at least one side of the textile substrate, wherein coating layer comprises polyurethane resin, a crosslinking agent, and a hydrophilic thickener, and the crosslinking agent is a compound having a blocked active group, and a method for preparing fabric for airbag, comprising steps of: preparing a textile substrate; and forming a coating layer on at least one side of the textile substrate, wherein the step of forming a coating layer comprise steps of: adding a crosslinking agent and a hydrophilic thickener to an aqueous polyurethane dispersion to prepare a coating solution; applying the coating solution on at least one side of the textile substrate; drying the textile substrate on which the coating solution is applied; and heat treating the dried textile substrate.

Fabric for airbag and method for manufacturing the same

Disclosed is a method for manufacturing a polyester fabric for an airbag that can not only prevent or minimize the separation of a sizing agent, which is provided to a yarn through a sizing process, during a weaving process, but can also maximize a peel strength between a textile substrate and a coating layer to be subsequently formed thereon and lower the stiffness of an airbag fabric by effectively removing the sizing agent from the textile substrate after the weaving process is completed. The method of the present invention comprises: applying a polyester-based sizing agent to a polyester yarn; manufacturing a textile substrate with the sizing agent-applied polyester yarn; removing the sizing agent from the textile substrate under an alkaline condition of pH 8 to 10; and forming a coating layer on the sizing agent-removed textile substrate in order to enhance air-tightness.

Method for manufacturing polyester fabric for airbag

Disclosed is a polyester yarn that can be used in a fabric for an airbag. In particular, a polyester yarn having a diethylene glycol content of 1.1 to 2.5 wt % and initial modulus of 100 g/d or less, a production method thereof, and a fabric for an airbag produced therefrom are disclosed. The polyester yarn has excellent moisture and heat resistance and light resistance, and maintained excellent mechanical properties after long-term aging under high temperature and high humidity conditions. Therefore, when applied to a fabric for an airbag, the polyester yarn provides excellent packing property, shape stability, and gas barrier effect, and the impact applied to a passenger is minimized, thereby safely protecting the passenger at the same time.

Polyester yarn and production method thereof

The present invention relates to a polyester fiber that can be applied to a fabric for an airbag, and particularly, to a polyester fiber having elongation of 0.5% or more at a stress of 1.0 g/d, elongation of 4.3% or more at a stress of 4.0 g/d, and elongation of 7.5% or more at a stress of 7.0 g/d, and an initial modulus of 40 to 100 g/d, a method of preparing the same, and a fabric for an airbag prepared therefrom. Since the polyester fiber of the present invention remarkably decreases stiffness and secures superior mechanical properties, it is possible to provide superior packing properties, dimensional stability, and gas barrier effect, and to protect occupants safely by minimizing the impact applied to the occupants, when it is used for the fabric for an airbag.

Polyester fiber for airbag and preparation method thereof

Disclosed is a high strength polyester fiber for a seat belt, and in particular, a polyester fiber for a seat belt, which has intrinsic viscosity of 0.8 to 1.5 dl/g, tensile strength of 8.8 g/d or more, and total fineness of 400 to 1800 denier. A method of preparing the fiber is disclosed. The polyester fiber includes filaments having high strength, low modulus, and high elongation to significantly lower shrinkage, while securing excellent mechanical properties, it is possible to manufacture a seat belt having excellent impact absorption and significantly improved abrasion resistance and heat resistant strength retention, even with a woven density of 260 yarns/inch or less.

Method of preparing polyester fiber for seat belt

The present invention relates to a film for a tire inner liner, particularly to a film for a tire inner liner including: a base film including a copolymer or a mixture of polyamide-based resin and a polyether-based resin; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein the base film has a tensile recovery rate of 30% to 80%. The film for a tire inner liner of the present invention may exhibit an excellent gas barrier property with a thin thickness, and thus enables light weight of a tire and improvement in automobile mileage, and enables easier forming during a tire manufacturing process.

Film for a tire inner liner and preparation method therefor

The present invention relates to a film for a tire inner liner including: a base film layer including polyamide-based resin and a copolymer including a polyamide-based segment and a polyether-based segment; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein there is little difference between properties in an MD (machine direction) and a TD (transverse direction), and a method for preparing a film for a tire inner liner, including melting the polyamide-based resin and the copolymer at 230 to 300&#xb0; C., extruding the molten substance under specific die gap conditions to form a base film, and forming an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive on the base film.

Disclosed are a preparation method for drawn fibers that enables the preparation of drawn poly(ethyleneterephthalate) fibers exhibiting with high fineness of at least 2,000 denier while having high tenacity and excellent dimensional stability and causes almost no deterioration of tenacity during the manufacturing process of tires such as vulcanization, and a drawn poly(ethyleneterephthalate) fiber and a tire cord that are obtained by the preparation method. The preparation method for drawn poly(ethyleneterephthalate) fiber includes: melt-spinning a polymer comprising at least 90 mol % of poly(ethyleneterephthalate) having a content of terminal carboxyl group (&#x2014;COOH) in the range of 20 to 30 eq/10g at a spinning speed of 2,500 to 4,000 m/min to form a undrawn fiber having a fineness of at least 2,000 denier; and drawing the undrawn fiber at a draw ratio of 1.4 to 2.4.

Preparation method for drawn poly (ethyleneterephthalate) fiber, drawn poly (ethyleneterephthalate) fiber, and tire cord

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&#xb0; C. for 1 minute under the initial load of 20 g/1000 d.

Drawn polyethylene terephthalate fiber, pet tire cord, and tire comprising thereof

Disclosed are a method for manufacturing a drawn fiber, which is suitable for manufacturing a poly(ethylene terephthalate) drawn fiber showing superior strength and dimensional stability and having a high fineness of 2000 denier or more without breakage or reduction in physical properties during the manufacturing process, and a poly(ethylene terephthalate) drawn fiber and a tire-cord obtained therefrom.

Method for manufacturing poly(ethyleneterephthalate) drawn fiber, poly(ethyleneterephthalate) drawn fiber and tire-cord

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&#xb0; 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&#xb0; C.

Drawn poly(ethyleneterephthalate) fiber, poly(ethyleneterephthalate) tire-cord, their preparation method and tire comprising the same

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)(%)=()/&#xd7;100&#x2003;&#x2003;Calculation Formula 1wherein, Lis an initial length of the tire cord, Lis 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&#xb0; C. and cooling the same to 24&#xb0; C. while maintaining the load, and Lis 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&#xb0; C. and cooling the same to 24&#xb0; C. while remaining the load of 0.01 g/d only.

Poly(ethyleneterephthalate) tire cord, and tire comprising the same

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.

Growing community of inventors

Daegu, South Korea

Gi-Woong Kim