公开(公告)号：US12018415B2

公开(公告)日：2024-06-25

申请号：US17292718

申请日：2019-12-02

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Wan Gyu Hahm ,  Byeong Jin Yeang ,  Young Chan Choi ,  Hyun Ju Oh

IPC: D04H1/4291 ,  D01D5/08

CPC classification number: D04H1/4291 ,  D01D5/08 ,  D10B2321/022 ,  D10B2331/04

Abstract: The present invention relates to a method for manufacturing a melt-spun nonwoven fabric and a microfiber nonwoven web manufactured therefrom. The present invention relates to a method for manufacturing a melt-spun nonwoven fabric, in which fibers obtained by melt-spinning a thermoplastic polymer through a spinning nozzle including at least one nozzle hole are collected by high-speed air stream, wherein the melt-spun fibers are subjected to momentary local heating at a high temperature higher than a spinning temperature while same are caused to pass through a nozzle local heating provided directly under the spinning nozzle during spinning, so that the method can lower the melt flow index and spinline elongation viscosity of a thermoplastic resin discharged from the nozzle hole without reducing a molecular weight, thereby providing a microfiber nonwoven web formed by finely thin fibers, compared to the conventional spun-bond nonwoven fabric.

公开(公告)号：US20150329996A1

公开(公告)日：2015-11-19

申请号：US14443581

申请日：2013-10-15

Applicant: Korea Institute of Industrial Technology

Inventor： Wan-Gyu Hahm ,  Sung Won Byun ,  Byeong Jin Yeang ,  In Woo Nam ,  Seung Jin Lee ,  Do Gun Kim ,  Ki Sub Lim

IPC: D02G3/44 ,  D21H21/44 ,  B42D25/36 ,  D01F8/12 ,  D01F8/14 ,  B42D25/355 ,  D01F1/04 ,  D01F8/06

Abstract: The present invention discloses a security yarn containing a multi-composite spinning fiber and security products using the same. The multi-composite spinning fiber, according to the present invention, contains, in at least one or more kinds of polymer materials, a first component selected from an IR reactive pigment or an IR absorption pigment, a second component selected from a visible pigment or an invisible UV-reactive fluorescent pigment, and a third component selected from X-ray absorption materials, so that the security yarn containing the multi-component spinning fiber can be identified by infrared and ultraviolet wavelength and easily identified when irradiated with X-rays, thus providing a multi-identification capability and being useful for preventing counterfeiting. Therefore, the security yarn containing a multi-composite spinning fiber can be useful for preventing the counterfeiting of paper money, gift certificates, marketable securities, and passports or the like, preventing imitations of expensive brand-name products, or identifying a friend or a foe for military purposes.

Abstract translation: 本发明公开了一种含有复合纺丝纤维的安全纱和使用其的安全产品。 根据本发明的多组合纺丝纤维在至少一种或多种聚合物材料中包含选自IR反应性颜料或IR吸收颜料的第一组分，选自可见颜料的第二组分或 不可见的紫外线反应性荧光颜料和选自X射线吸收材料的第三成分，使得含有多成分纺丝纤维的安全纱可以通过红外线和紫外线波长识别，并且在用X射线照射时容易识别， 从而提供多重识别能力并且可用于防止假冒。 因此，含有复合纺丝纤维的安全纱可用于防止伪造纸币，礼品券，有价证券和护照等，防止伪造昂贵的名牌产品，或识别朋友或 敌军为军事目的。

公开(公告)号：US20150240385A1

公开(公告)日：2015-08-27

申请号：US14432680

申请日：2013-09-11

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Wan-Gyu Hahm ,  Sung Won Byun ,  Byeong Jin Yeang ,  In Woo Nam ,  Seung Jin Lee ,  Do Gun Kim ,  Ki Sub Lim

IPC: D01D5/30 ,  D01F8/04

CPC classification number: D01D5/30 ,  D01D4/06 ,  D01D5/32 ,  D01F8/04 ,  D10B2401/00 ,  Y10T428/2929

Abstract: A method and apparatus for fabricating a conjugate fiber. Resins having different properties, for example, resins of the same or different components including functional pigments or substances are continuously and alternatively discharged in an endless state by operating a spinning nozzle unit in a melting state, thereby fabricating the conjugate fiber having the different properties in the longitudinal direction of the fiber, and having various surface effects and patterns in the longitudinal direction of the fiber. A conjugate fiber fabricated by the above apparatus and method is also provided.

Abstract translation: 一种复合纤维的制造方法和装置。 具有不同性质的树脂，例如包括功能性颜料或物质的相同或不同组分的树脂通过在熔融状态下操作纺丝喷嘴单元而以无限状态连续地或替代地排出，由此制造具有不同性质的复合纤维 纤维的长度方向，并且在纤维的长度方向上具有各种表面效果和图案。 还提供了通过上述装置和方法制造的复合纤维。

公开(公告)号：US10266967B2

公开(公告)日：2019-04-23

申请号：US14432680

申请日：2013-09-11

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Wan-Gyu Hahm ,  Sung Won Byun ,  Byeong Jin Yeang ,  In Woo Nam ,  Seung Jin Lee ,  Do Gun Kim ,  Ki Sub Lim

IPC: D01D4/06 ,  D01D5/32 ,  D01D5/30 ,  D01F8/04

Abstract: A method and apparatus for fabricating a conjugate fiber. Resins having different properties, for example, resins of the same or different components including functional pigments or substances are continuously and alternatively discharged in an endless state by operating a spinning nozzle unit in a melting state, thereby fabricating the conjugate fiber having the different properties in the longitudinal direction of the fiber, and having various surface effects and patterns in the longitudinal direction of the fiber. A conjugate fiber fabricated by the above apparatus and method is also provided.

公开(公告)号：US10584430B2

公开(公告)日：2020-03-10

申请号：US14443581

申请日：2013-10-15

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Wan-Gyu Hahm ,  Sung Won Byun ,  Byeong Jin Yeang ,  In Woo Nam ,  Seung Jin Lee ,  Do Gun Kim ,  Ki Sub Lim

IPC: D02G3/44 ,  D01F8/12 ,  B42D25/355 ,  B42D25/36 ,  D21H21/44 ,  D01F1/04 ,  D01D5/30 ,  D01F1/10 ,  D01D5/253 ,  D01F8/06 ,  D01F8/14

Abstract: The present invention discloses a security yarn containing a multi-composite spinning fiber and security products using the same. The multi-composite spinning fiber, according to the present invention, contains, in at least one or more kinds of polymer materials, a first component selected from an IR reactive pigment or an IR absorption pigment, a second component selected from a visible pigment or an invisible UV-reactive fluorescent pigment, and a third component selected from X-ray absorption materials, so that the security yarn containing the multi-component spinning fiber can be identified by infrared and ultraviolet wavelength and easily identified when irradiated with X-rays, thus providing a multi-identification capability and being useful for preventing counterfeiting. Therefore, the security yarn containing a multi-composite spinning fiber can be useful for preventing the counterfeiting of paper money, gift certificates, marketable securities, and passports or the like, preventing imitations of expensive brand-name products, or identifying a friend or a foe for military purposes.

公开(公告)号：US10422052B2

公开(公告)日：2019-09-24

申请号：US15556859

申请日：2016-03-09

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Wan Gyu Hahm ,  In Woo Nam ,  Seung Jin Lee ,  Do Kun Kim ,  Ki Sub Lim ,  Joo Hyung Lee ,  Gyu Dong Lee ,  Yeong Og Choi ,  Byeong Jin Yeang

IPC: D01D5/12 ,  D01D5/16 ,  D01D5/253 ,  D01D5/34 ,  D01D5/36 ,  D01D7/00 ,  D01D10/02 ,  D01D5/084 ,  D01D5/088 ,  D01D5/098 ,  D01D5/30 ,  D01F8/00 ,  D01F8/14 ,  D01D5/32 ,  D01F6/06 ,  D01F6/60 ,  D01F6/62 ,  D01F8/06 ,  D01F8/12 ,  D01D4/02 ,  D01F6/04

Abstract: Provided is a method of manufacturing high strength synthetic fibers, and high strength synthetic fibers manufactured using the same. More particularly, the method involves a localized heating process by raising the temperature of a molten spinning fiber to a temperature higher than that of a pack body during a short period of time with no degradation through a heating zone located in the immediate vicinity of capillary in the spinning nozzle, so as to effectively control the molecular entanglement structure in the molten polymer without reducing the molecular weight and thus to enhance the drawability of the as-spun fibers, thereby improving the mechanical properties of the as-spun fibers, such as strength, elongation, etc., using the existing processes of melt spinning and drawing and thus enabling a mass production of a high-performance fiber at low cost.