Abstract:
본발명은고강도섬유제조용방사노즐에관한것이다. 본발명은용융복합방사공정에서방사후 방사노즐직하시국부가열방식을최적화하되, 방사노즐직하에서방사되는모든섬유에균일하게고온의열전달을간접적으로가열하고, 특히, 방사노즐의홀 부근과방사노즐의직하에서섬유를이중으로가열하여열전달방식을최적화함으로써, 순간고온가열에의해용융상고분자내분자쇄얽힘구조를제어하여열가소성고분자섬유의강도및 신도등의기계적물성을개선한다. 또한, 본발명의방사노즐은실제상용화되는방사노즐설계와용융방사공정및 연신공정의기존공정을활용하면서기계적물성을개선하므로, 저비용으로고성능의섬유를대량생산할수 있으며, 방사속도및 연신속도증가에의한생산성향상, 및분자량저하없이용융점도를낮출수있어고분자량의수지의방사가가능하여고강도섬유를제조할수 있다.
Abstract:
본발명은고강도폴리에스테르사의제조방법에관한것이다. 본발명은용융복합방사공정에서방사후 방사노즐직하시국부가열방식을최적화하되, 방사노즐직하에서방사되는모든섬유에균일하게고온의열전달을간접적으로가열하고, 특히, 방사노즐의홀 부근과방사노즐의직하에서멀티필라멘트사를이중으로가열하여열전달방식을최적화함으로써, 순간고온가열에의해용융상고분자내분자쇄얽힘구조를제어하여폴리에스테르사의강도및 신도등의기계적물성을개선한다. 또한, 본발명의제조방법은실제상용화되는방사노즐설계와용융방사공정및 연신공정의기존공정을활용하면서기계적물성을개선하므로, 저비용으로고성능의섬유를대량생산할수 있다.
Abstract:
본 발명은 다분할 중공노즐, 그를 이용한 다분할 중공섬유의 제조방법, 그로부터 얻은 다분할 중공섬유 및 그 용도에 관한 것이다. 본 발명은 적어도 2 개 이상의 다분할 중공형성용 슬릿을 구비하여 1 홀 내 중공 개수가 2 개 이상인 다분할 중공노즐을 설계함으로써, 열가소성 고분자 수지로 이루어진 중공사 내부의 중공이 2개 이상으로 분할되어, 3 내지 50%의 높은 중공율을 가지면서도 외력에 의해 중공단면이 쉽게 찌그러지거나 변형되지 않아 경량화와 볼륨감이 유지되면서, 기존 중공섬유 대비, 고경량, 고단열(보온), 고탄성, 고내구성이 구현되는 다분할 중공섬유를 제조할 수 있다. 나아가, 본 발명의 다분할 중공섬유는 단열재 등의 산업용 건축 섬유소재; 보온 및 쿠션용 침구류 및 소파, 인테리어 등의 생활용 섬유소재; 및 레저 및 스포츠용 등의 경량 보온 의류용 섬유 소재; 자동차, 항공기, 열차 등의 수송용 내외장재용의 경량, 보온, 단열 및 쿠션용도의 산업용 섬유소재로서 유용하다.
Abstract:
The present invention relates to a multilayer multi-divisional hollow fiber, a method for manufacturing the same and a use for the same. The multilayer multi-divisional hollow fiber of the present invention includes: a multi-divisional hollows formed to be divided into at least three hollows in a hollow fiber formed of a thermoplastic resin; and at least one hollow sequentially formed on an inner layer between the multi-divisional hollows while polymers melt-extruded from adjacent spinning nozzles are connected to each other after spinning, in which the multilayer multi-divisional hollow fiber has a high hollow rate of 10-50 %, and since a cut end of the hollow is not easily distorted or deformed by external force, a reduced weight and a volume are maintained and also light-weight, high insulation (heat insulation), high elasticity, and high durability properties are realized compared to existing hollow fibers. Such a multilayer multi-divisional hollow fiber of the present invention is useful as a fabric material for lightweight insulating clothing for leisure, sports or the likes; an industrial construction fabric material such as an insulator or the likes; a household fabric material for thermal insulation and cushions for bedding, for sofas, and for interiors; and an industrial fabric material used as interior and exterior materials on automobiles, aircraft, trains, and other forms of transportation for reducing weight, heat retention, thermal insulation and cushioning.
Abstract:
The present invention relates to a security yarn allowing dual identification, a method for manufacturing the same, and an anti-forgery article using the same. The security yarn of the present invention contains an X-ray absorbing material in one component of a biocomponent fiber structure and contains one pigment alone or a mixture of pigments selected from the group consisting of visible or non-visible UV reactive fluorescent pigment, IR-reactive pigment, and IR-absorptive pigment, in the other component thereof; thereby allowing easy identification during X-ray irradiation as well as identification according to the infrared and ultraviolet wavelengths. Furthermore, according to the present invention, the security yarn is designed such that the specific gravity of a composite fiber is 1 or greater and one component of the composite fiber is formed of a hydrophilic polymeric resin, thereby improving water dispersibility during paper-making, so that the security yarn is introduced and processed in the paper making process, thus being easily applied to anti-forgery of bills, vouchers, securities, and passports.
Abstract:
The present invention relates to a security yarn consisting of a multi-composite spun fiber and a security article using the same. The security yarn consisting of the multi-composite spun fiber of the present invention contains a first component selected from an IR reactive pigment and an IR absorptive pigment, a second component selected from a visible pigment and a non-visible UV reaction fluorescent pigment, and a third component selected from X-ray absorptive materials, in at least one polymeric material, thereby allowing easy identification during X-ray irradiation as well as identification according to the infrared and ultraviolet wavelengths, so that the present invention employs a unit to enable multi-identification, thus being useful for anti-forgery. Therefore, the security yarn consisting of the multi-composite spun yarn of the present invention can be applied usefully to anti-forgery of bills, vouchers, securities, and passports, to prevent imitations of expensive luxuries or identifying a friend or foe in the military.