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公开(公告)号：US4956446A
公开(公告)日：1990-09-11
申请号：US375087
申请日：1989-07-03
摘要： Polyester fiber which is characterized as follows:the fiber is made of polyethylene terephthalate or of polyester in which this is the main component. The fiber has the following combination of property characteristics:(a) an intrinsic viscosity of 0.70 to 1.05 dl/g(b) a tenacity of at least 8.0 g/d(c) an elongation at break of 17% or less,(d) an amorphous chain size of 60-70 A,(e) a density at least 1.395 g/cm.sup.3,(f) a dry heat shrinkage of 3.5% or less,(g) a heat resistance of at least 80%.
摘要翻译： 聚酯纤维的特征如下：纤维由聚对苯二甲酸乙二醇酯或以其为主要成分的聚酯制成。 纤维具有以下特性组合：（a）特性粘度为0.70〜1.05dl / g（b）强度为至少8.0g / d（c）断裂伸长率为17％以下，（d ）无定形链尺寸为60-70A，（e）密度至少为1.395g / cm 3，（f）干热收缩率为3.5％以下，（g）耐热性为至少80％。
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公开(公告)号：US5066439A
公开(公告)日：1991-11-19
申请号：US499863
申请日：1990-03-27
摘要： A continuous spin-draw process of making dimensionally stable polyester fiber having high strength and low shrinkage by melt spinning polyethylene terephthalate and drawing comprising multiple drawing stages of at least two stages where the spun yarn is passed from the takeup roller to a first pair of drawing rollers, then to a final pair of drawing rollers, then to a pair of relaxation rollers and then to yarn take up means; the surface temperature of said final pair of drawing rollers being maintained at 10.degree. to 60.degree. C. lower than the melting point of the drawn fiber; a non-contct type heated plate whose surface temperture is heated to 250.degree. to 500.degree. C. is positioned 20 to 100 mm separated from the yarn, thereby heating the yarn to obtain the relaxation heat treatment; and applying a commingling treatment to the drawn fiber by installing a commingling treatment apparatus between the final pair of drawing rollers and the pair of relaxation rollers.
摘要翻译： 通过熔融纺丝聚对苯二甲酸乙二醇酯制造具有高强度和低收缩的尺寸稳定的聚酯纤维的连续纺丝拉伸工艺，其包括至少两个阶段的多个拉伸阶段，其中纺丝从卷取辊通过第一对拉伸 辊子，然后到最后一对牵引辊，然后到一对松弛辊，然后到纱线卷取装置; 所述最终拉伸辊的表面温度保持在低于拉伸纤维的熔点10℃至60℃; 将表面温度加热到250〜500℃的非接续型加热板与纱线分离成20〜100mm，由此加热纱线以获得松弛热处理; 并且通过在最终的一对牵引辊和一对松驰辊之间安装一个混合处理装置，对拉伸的纤维进行混合处理。
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公开(公告)号：US5137670A
公开(公告)日：1992-08-11
申请号：US580756
申请日：1990-09-11
CPC分类号： D02J1/224 , D01D5/16 , D01F6/62 , D02J13/005 , Y10T428/2913 , Y10T428/2969
摘要： (1) Polyester fiber which consists substantially of polyethylene terephthalate, the fiber being characterized by strength of least 7.0 g/d, initial Young's modulus of at least 85 g/d, elongation of less that 20%, degree of crystallization X.rho. of at least 45% and the ratio of birefringence (.DELTA.n) and the degree of crystallization X.rho. from 0.38 to 0.45.(2) Method of making polyester fiber, characterized as follows: Polyethylene terephthalate is melt spun then passed through the heated cylinder which is installed directly under the spinning die; cooled and solidified; the oil agent is imparted and the yarn is taken-up at the speed of over 2000 m/min; this is drawn to a ratio of 1.5-2.3 in at least 2-drawing stages in continuation; then heat treated; the surface temperature of the drawing rollers at the final drawing stage is kept at 220.degree.-250.degree. C.; a non-contact type heating plate heated to a surface temperature of 250.degree.-500.degree. C. is installed 200-100 mm apart from the yarn at the final drawing stage to heat the drawn yarn; the yarn is heat treated again by the heating roller and finally wound-up.
摘要翻译： （1）基本上由聚对苯二甲酸乙二醇酯组成的聚酯纤维，其特征在于强度至少为7.0g / d，初始杨氏模量为至少85g / d，伸长率小于20％，结晶度X rho为 至少45％，双折射率（DELTA n）和结晶度X rho从0.38到0.45。 （2）聚酯纤维的制造方法，其特征如下：将聚对苯二甲酸乙二醇酯熔融纺丝，然后通过直接安装在纺丝模具下面的加热筒体; 冷却固化; 赋予油剂，纱线以超过2000m /分钟的速度卷取; 在至少两个拉伸阶段中，这一比例为1.5-2.3; 然后进行热处理; 拉丝辊的最终拉伸阶段的表面温度保持在220-250℃。 在最终拉伸阶段将加热到表面温度为250-500℃的非接触式加热板安装在离纱线200-100mm处，以加热拉丝纱线; 纱线再次被加热辊热处理，最后卷起。
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