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    • 2. 发明授权
    • Polyester fiber
    • 聚酯纤维
    • US4195161A
    • 1980-03-25
    • US888961
    • 1978-03-22
    • Herbert L. DavisMichael L. JaffeMichael M. Besso
    • Herbert L. DavisMichael L. JaffeMichael M. Besso
    • D01F6/62C08G63/70C08G63/18
    • D01F6/62
    • An improved polyester filament (i.e., a principally polyethylene terephthalate filament) suitable for use in commercial applications is provided having a unique internal structure. The filament possesses an interconnected highly oriented crystalline microstructure coextensive with its length coexisting with an interdispersed substantially disoriented non-crystalline phase. The filament microstructure imparts inter alia a propensity for the filament to undergo a low degree of shrinkage under a high degree of force at an elevated temperature as evidenced by a modulus ratio (as defined) of at least 0.1. The filament exhibits a relatively high initial modulus, coupled with a relatively high crystalline orientation function, and a relatively low amorphous orientation function.
    • 提供了适用于商业应用的改进的聚酯长丝(即,主要是聚对苯二甲酸乙二醇酯长丝),其具有独特的内部结构。 长丝具有相互高度取向的结晶微结构,其共同延伸,其长度与分散间的基本上不定向的非结晶相共存。 长丝显微组织尤其表现为在高温下在高度的力下经历低度收缩的倾向,如通过至少0.1的模量比(定义)所证明的。 长丝显示相对高的初始模量,加上相对较高的结晶定向功能和相对较低的无定形取向功能。
    • 6. 发明授权
    • Process for the expeditious formation and structural modification of
polyester fibers
    • 聚酯纤维快速形成和结构改性的方法
    • US3946100A
    • 1976-03-23
    • US400863
    • 1973-09-26
    • Herbert L. DavisMichael L. JaffeeMichael M. Besso
    • Herbert L. DavisMichael L. JaffeeMichael M. Besso
    • D01D10/00D01D5/092D01F6/62D01D5/12
    • D01F6/62D01D5/092
    • An improved process is provided for the production of polymeric filamentary material or film. Molten melt-spinnable polymeric material capable of undergoing crystallization (e.g., a polyester) is extruded through a shaped orifice to form a filamentary material or film under high stress conditions, quenched to below its glass transition temperature to form a solid filamentary material or film, and sequentially passed for a brief residence time through a thermal conditioning zone at a temperature between its glass transition temperature and its melting temperature wherein the internal structure thereof is modified and substantial crystallization of the previously solidified filamentary material or film takes place. The filamentary material or film is withdrawn from the conditioning zone at a rate of 1000 to 6000 meters per minute while under a relatively high stress of about 0.1 to 1.0 gram per denier. The process is conducted while exerting a constant tension upon the filamentary material or film in the absence of stress isolation. The melt extrusion process yields a product wherein the tensile strength and modulus are improved and the shrinkage characteristics are diminished.
    • 提供了用于生产聚合物长丝材料或膜的改进方法。 能够经历结晶的熔融可熔融纺丝聚合材料(例如聚酯)通过成形孔挤出,以在高应力条件下形成丝状材料或薄膜,淬火至低于其玻璃化转变温度以形成固体丝状材料或薄膜, 并通过热调节区在其玻璃化转变温度和其熔融温度之间的温度下顺次通过,其中其内部结构被修饰,并且发生先前固化的丝状材料或膜的实质结晶。 长丝材料或薄膜以1000至6000米/分钟的速率从调理区域中取出,而在约0.1至1.0克/旦尼尔的较高应力下。 在没有应力隔离的情况下,在丝状材料或膜上施加恒定张力的同时进行该过程。 熔融挤出工艺产生了拉伸强度和模量提高并且收缩特性减小的产品。