ACRYLIC FIBER AND METHOD FOR MANUFACTURING SAME

    公开(公告)号:US20180119311A1

    公开(公告)日:2018-05-03

    申请号:US15851119

    申请日:2017-12-21

    摘要: An acrylic fiber is composed of an acrylic polymer. The acrylic polymer includes acrylonitrile, wherein the acrylic fiber has a deformation degree of 0.13 or less and a surface roughness of 6000 μm2 or less. A method for producing an acrylic fiber by wet spinning or dry-wet spinning includes: dissolving an acrylic polymer in an organic solvent to form a spinning solution, the acrylic polymer including acrylonitrile; discharging the spinning solution into a coagulation bath to form an acrylic fiber; water washing the acrylic fiber; and drying the acrylic fiber, wherein, before drying the acrylic fiber, the acrylic fiber is pressed with a nip roll and subjected to pre-drying using a dryer into which steam is fed.

    HIGH STRENGTH POLYAMIDE YARN
    4.
    发明申请

    公开(公告)号:US20180038019A1

    公开(公告)日:2018-02-08

    申请号:US15551633

    申请日:2016-02-23

    IPC分类号: D02G3/04 D01D5/16 D01F6/80

    摘要: The invention relates to a yarn comprising a copolyamide in an amount of at least 90 wt % with respect to the total weight of the yarn, which copolyamide comprises a) at least 95 wt % by weight with respect to the total weight of copolyamide, monomeric units derived from hexamethylene diamine and adipic acid and b1) cyclic monomeric units derived from a diamine X, and cyclic monomeric units derived from a diacid Y, and/or b2) cyclic monomeric units derived from an amino acid Z, in which the summed amount of monomeric units derived from X, Y and Z is between 0.1 to 4.5 wt % by weight with respect to the total weight of the copolyamide and wherein the yarn has a tensile strength of at least 80 cN/tex as measured according to ASTM D885-04. The invention also relates to a process for preparing the yarn.

    METHOD AND DEVICE FOR PRODUCING A MULTIFILAMENT THREAD FROM A POLYAMIDE MELT

    公开(公告)号:US20170233895A1

    公开(公告)日:2017-08-17

    申请号:US15519219

    申请日:2015-10-07

    发明人: Hansjörg MEISE

    摘要: Techniques produce a multifilament thread from a polyamide melt. In this case, freshly extruded filaments are cooled and combined to form a thread. In order, in addition to low boil-off shrinkage, to achieve high strength, the thread is taken off at a take-off rate in the range from 3600 m/min to 4600 m/min, preferably from 4000 m/min to 4400 m/min, by a first godet group having unheated guide casings. Subsequently, the thread is fully drawn between the first godet group and a second godet group having heated guide casings. After drawing, the thread is heated to a thread temperature in the range from 140° C. to 200° C. under tension at the guide casings of the second godet group and relaxed. After relaxing, the thread runs in a contact-free manner through at least one free cooling section between the second godet group and a third godet group having unheated guide casings.

    DULL POLYAMIDE 56 FIBER AND METHOD FOR MANUFACTURING THE SAME
    8.
    发明申请
    DULL POLYAMIDE 56 FIBER AND METHOD FOR MANUFACTURING THE SAME 有权
    DULL POLYAMIDE 56纤维及其制造方法

    公开(公告)号:US20160176094A1

    公开(公告)日:2016-06-23

    申请号:US14829647

    申请日:2015-08-19

    IPC分类号: B29C47/00

    摘要: A method for manufacturing a dull polyamide 56 fiber includes steps as follows. Bright polyamide 56 chips are provided. A viscosity adjusting step is provided, wherein a relative viscosity in sulfuric acid of the bright polyamide 56 chips is adjusted to a range of 2.90 to 3.00. A moisture adjusting step is provided, wherein a moisture content of the bright polyamide 56 chips is adjusted to a range of 350 to 550 ppm. A spinning step is provided, which includes providing dull polyamide 6 chips and a blending step. The dull polyamide 6 chips include TiO2. In the blending step, the dull polyamide 6 chips and the bright polyamide 56 chips dealt with the viscosity adjusting step and the moisture adjusting step are melted and blended, and then spun at a temperature ranging from 275° C. to 285° C., thus the dull polyamide 56 fiber is obtained.

    摘要翻译: 用于制造无光聚酰胺56纤维的方法包括以下步骤。 提供明亮的聚酰胺56芯片。 提供粘度调节步骤,其中亮亮聚酰胺56片的硫酸中的相对粘度调节至2.90至3.00的范围。 提供了一种水分调节步骤,其中将亮光聚酰胺56碎片的水分含量调节至350至550ppm的范围。 提供纺丝步骤,其包括提供无色聚酰胺6碎片和混合步骤。 无光聚酰胺6芯片包括二氧化钛。 在混合步骤中,将沉积的聚酰胺6芯片和亮聚酰胺56芯片处理粘度调节步骤并且将水分调节步骤熔融并混合,然后在275℃至285℃的温度下旋转, 得到无光聚酰胺56纤维。

    METHOD FOR MANUFACTURING STRUCTURAL SYNTHETIC FIBERS FOR CONCRETES AND MORTARS AND THE SYNTHETIC FIBER OBTAINED
    9.
    发明申请
    METHOD FOR MANUFACTURING STRUCTURAL SYNTHETIC FIBERS FOR CONCRETES AND MORTARS AND THE SYNTHETIC FIBER OBTAINED 有权
    制造混凝土结构合成纤维的方法和获得的合成纤维

    公开(公告)号:US20160145773A1

    公开(公告)日:2016-05-26

    申请号:US14907205

    申请日:2014-07-23

    摘要: Method for manufacturing structural synthetic fibers for concretes and mortars and the synthetic fiber obtained, particularly a polyolefin-based synthetic fiber for use in concretes and mortars with a hydraulic binder as a cementing base for increasing the elastic modulus of the same which comprises the mixture of polyolefin and additives, the formation of threads, a first stretching process, an alternate series of heating-cooling, collecting the threads in coils and stabilization of the polymerization/cross-linking for two days to one week; the threads are subsequently again subjected to one or several re-stretching phases, including the heating-cooling and subsequent stabilization processes if successive re-stretching processes are going to be carried out; lastly a surface etching phase and the cutting of the threads.

    摘要翻译: 用于制造混凝土和砂浆的结构合成纤维的方法和所得的合成纤维,特别是用于具有水硬性粘合剂的混凝土和砂浆的聚烯烃类合成纤维,作为用于增加其的弹性模量的固化基料,其包含混合物 聚烯烃和添加剂,螺纹的形成,第一拉伸工艺,替代系列的加热冷却,收集线圈中的螺纹和稳定聚合/交联两天至一周; 然后,如果要进行连续的再拉伸过程,则螺纹再次经历一个或几个再拉伸阶段,包括加热冷却和随后的稳定化过程; 最后是表面蚀刻阶段和切割线。