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公开(公告)号：US4600545A
公开(公告)日：1986-07-15
申请号：US22057
申请日：1979-03-19
申请人： Paolo Galli , Paolo Parrini
发明人： Paolo Galli , Paolo Parrini
摘要： Polyolefin fibers, which are suited for at least partially substituting the cellulose fibers in the manufacture of paper, are produced by a process which consists in preparing in a pressure vessel a solution of a polyolefin at a temperature higher than the boiling temperature of the solvent under normal conditions, and under autogenous pressure or a pressure greater than the autogenous pressure, in ejecting said solution under the above stated conditions into a zone of lower pressure, in allowing the ejected solution to expand at least partially in said zone, and in then hitting the at least partially expanded solution with a jet of a high-speed fluid, which is at a temperature lower than that of the solution, and has an angled direction with respect to the direction of ejection of the solution.
摘要翻译： 适用于至少部分代替纤维素纤维制造纸张的聚烯烃纤维是通过一种方法生产的，该方法包括在压力容器中在高于溶剂沸点温度的温度下制备聚烯烃溶液 在自生压力或大于自体压力的压力下，在将上述条件下将所述溶液喷射到较低压力的区域中，以允许喷射的溶液至少部分地在所述区域中膨胀，然后在打击 所述至少部分膨胀的溶液具有高于溶液的温度的高速流体的射流，并且相对于溶液的喷射方向具有成角度的方向。
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公开(公告)号：US4510185A
公开(公告)日：1985-04-09
申请号：US450268
申请日：1982-12-16
申请人： Antonio Chiolle , Alfio Vecchi , Lino Credali
发明人： Antonio Chiolle , Alfio Vecchi , Lino Credali
IPC分类号： D06M15/333 , B05D7/24 , D06M20060101 , D06M101/00 , D06M101/16 , D06M101/18 , D21H20060101 , D21H13/14
CPC分类号： D21H5/202 , D21H13/14 , Y10T428/2938 , Y10T428/2967
摘要： A process for obtaining water-dispersable polyolefin fibers endowed with a high degree of cohesion consists in maintaining the fibers in contact with a stable emulsion formed by a water solution of polyvinyl alcohol and a poor solvent for the polyolefin, under stirring in turbulence conditions, at a temperature lower than the boiling temperature of the emulsion.
摘要翻译： 获得具有高度内聚力的水分散性聚烯烃纤维的方法在于在湍流条件下，在搅拌下，在湍流条件下，保持纤维与由聚乙烯醇的水溶液形成的稳定乳液和聚烯烃的不良溶剂接触 温度低于乳液的沸点温度。
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公开(公告)号：US4477516A
公开(公告)日：1984-10-16
申请号：US508223
申请日：1983-06-27
CPC分类号： D21H25/04 , D01F8/06 , D04H1/54 , D21H13/14 , D21H5/129 , D21H5/202 , Y10T428/2929 , Y10T428/2931 , Y10T442/637 , Y10T442/641
摘要： A non-woven fabric of hot-melt-adhesive composite fibers having a specified small weight per unit area and soft feeling is provided which fibers are obtained by forming a fiber aggregate consisting of hot-melt-adhesive composite fibers of a specified fineness, alone, composed of as a first component, a polyethylene resin composition (C) consisting of (A) a straight chain, low density polyethylene and (B) another kind of polyethylene, in a specified proportion, and having a specified density and a specified ratio of its melt indexes after and before spinning, and as a second component, a fiber-formable polymer having a m.p. higher than those of either of the polyethylenes constituting the first component, the first component constituting at least a part of the fiber surface of the composite fibers continuously in the longitudinal direction thereof, or a fiber aggregate of a specified average fineness which is mixed fibers of the composite fibers with other fibers of a specified fineness; and subjecting either one of the fiber aggregates to heat treatment at a specified temperature.
摘要翻译： 提供了具有规定的单位面积重量和柔软感的特定小重量的热熔性复合纤维的无纺布，其中纤维通过形成由特定纤度的单独的热熔粘合复合纤维组成的纤维聚集体 由作为第一成分的由（A）直链，低密度聚乙烯和（B）另一种聚乙烯构成的聚乙烯树脂组合物（C）以规定比例组成，具有规定的密度和规定比例 的纺丝前后的熔融指数，作为第二成分，具有mp的纤维形成性聚合物 高于构成第一成分的任一种聚乙烯的第一成分，构成复合纤维的长度方向的纤维表面的至少一部分的第一成分，或指定平均纤度的纤维集合体， 复合纤维与其他纤维具有规定的细度; 并使纤维集合体中的任一个在特定温度下进行热处理。
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公开(公告)号：US4274917A
公开(公告)日：1981-06-23
申请号：US16060
申请日：1979-02-28
申请人： Clarence R. Murphy , S. Paul Thackabeery , Robert E. Boehme, deceased , by Helen J. Boehme, sole beneficiary
发明人： Clarence R. Murphy , S. Paul Thackabeery , Robert E. Boehme, deceased , by Helen J. Boehme, sole beneficiary
摘要： Paper having improved properties, particularly tear strength, is prepared from a furnish containing at least 90 weight % of cellulose fibers and up to 10 weight % of olefin polymer fibrils. The fibrils are prepared by a differential temperature process of the type described in U.S. Pat. No. 4,013,751, are refined in isopropanol, and are treated with an aqueous solution of polyvinyl alcohol to sorb at least 1.0 weight % of polyvinyl alcohol on the fibrils. The fibrils are prepared from an olefin polymer having a weight average molecular weight of at least one (1) million.
摘要翻译： 具有改善性能，特别是撕裂强度的纸由含有至少90重量％的纤维素纤维和至多10重量％的烯烃聚合物原纤的配料制备。 原纤维通过美国专利No. 在异丙醇中精炼，并用聚乙烯醇水溶液处理以吸附原纤上至少1.0重量％的聚乙烯醇。 原纤维由重均分子量为至少一（1）百万的烯烃聚合物制备。
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公开(公告)号：US4127623A
公开(公告)日：1978-11-28
申请号：US743419
申请日：1976-11-19
申请人： Shunsuke Matsushima , Kiyoshi Kawai
发明人： Shunsuke Matsushima , Kiyoshi Kawai
摘要： A process for producing poly-.alpha.-olefin short fibers, which is characterized by further increasing the pressure of a solution system comprising a fiber-forming crystalline poly-.alpha.-olefin and a solvent and existing in the form of a solution mixture of two liquid phases at an elevated temperature and pressure, and immediately thereafter ejecting the solution system under pressure through a nozzle or orifice.
摘要翻译： 一种生产聚α-烯烃短纤维的方法，其特征在于进一步增加包含形成纤维的结晶聚-α-烯烃和溶剂的溶液体系的压力，并且以两种液体的溶液混合物的形式存在 在升高的温度和压力下进行相，然后立即在压力下通过喷嘴或孔排出溶液体系。
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公开(公告)号：US3997648A
公开(公告)日：1976-12-14
申请号：US214925
申请日：1972-01-03
摘要： An improvement in the fibril formation process which includes dissolving at an elevated temperature an olefin polymer having an inherent viscosity of at least 3.5 in a hot hydrocarbon solvent, shearing the hot polyolefin solution to thereby orient the polymer molecules therein, passing the sheared solution through a cooling zone maintained at a temperature well below the precipitation temperature of the solution while maintaining the orientation of the polymer molecules within the solution to thereby precipitate by thermal means the polymer solute of the solution in the form of a solvent swollen fibrous strand, separating a substantial portion of the polymer solvent from the fibrous strand, chopping and then beating the chopped fibrous strand in a liquid which is a nonsolvent for the polymer and which is soluble in the polymer solvent for a time sufficient to break down the fibrous strand into a plurality of fibrils, and separating the fibrils from the nonsolvent liquid. The improvement consists of homogenizing the hot polyolefin/hydrocarbon solvent solution by passing same through a device, such as a gear pump, which imposes a high shear on the solution to thereby remove any small, invisible globules of partially dissolved polyolefin that may be present in the solution prior to the fibril formation steps of the process whereby paper sheets fabricated from the resultant fibrils are free of small knots and lumps and possess a completely smooth surface.
摘要翻译： 原纤维形成方法的改进，其包括在高温下将热固性烃溶剂中特性粘度至少为3.5的烯烃聚合物溶解，剪切热聚烯烃溶液，从而使聚合物分子在其中定向，使剪切溶液通过 冷却区保持在远低于溶液的沉淀温度的温度，同时保持聚合物分子在溶液中的取向，从而通过热法沉淀出溶剂溶胀的纤维束形式的溶液的聚合物溶质， 部分聚合物溶剂从纤维链中切割，然后将该切碎的纤维束以对于聚合物为非溶剂的液体进行打浆，该液体可溶于聚合物溶剂中足以将纤维束分解成多个 原纤维，并将原纤维与非溶剂液体分离。 该改进包括将热的聚烯烃/烃溶剂溶液通过使其通过诸如齿轮泵的装置来均匀化，该装置在溶液上施加高剪切，从而除去可能存在的部分溶解的聚烯烃中的任何小的不可见小球 在该方法的原纤维形成步骤之前的溶液，由此由所得原纤维制成的纸张不具有小结和块状并且具有完全光滑的表面。
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公开(公告)号：US3914354A
公开(公告)日：1975-10-21
申请号：US39913873
申请日：1973-09-20
发明人： UEKI SHIRO , MIYATA YOSHIMITSU
IPC分类号： D21B1/36 , C08J3/02 , C08J3/09 , C08J3/12 , D01D5/00 , D01D5/11 , D01D5/42 , D01F6/00 , D01F6/44 , D21H13/10 , B29C23/00
摘要： An aqueous disperse system, preferably an aqueous emulsion, comprising a molten linear polymer droplets dispersed in the aqueous phase and containing a fine water-sorption agent and a positive solvent with respect to the polymer is ejected from a high-pressure region at a temperature above the polymer melting point and below the critical temperature of the disperse system and at a pressure above the saturated vapor pressure of the disperse system into a low-pressure region at a temperature and pressure permitting evaporation of a liquid phase within the disperse system thereby to produce a fine fibrous structure of the polymer.
摘要翻译： 包含分散在水相中的熔融线性聚合物液滴并含有相对于聚合物的细吸水剂和正溶剂的水分散系统，优选为水性乳液，其高于上述温度从高压区域喷出 聚合物熔点并低于分散系统的临界温度，并且在高于分散体系的饱和蒸汽压力的压力下，在允许分散系统内的液相蒸发的温度和压力下进入低压区域，从而产生 聚合物的细纤维结构。
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公开(公告)号：US4320210A
公开(公告)日：1982-03-16
申请号：US215905
申请日：1980-12-12
申请人： Jin K. Kim , Clarence R. Murphy , Edward W. Smith
发明人： Jin K. Kim , Clarence R. Murphy , Edward W. Smith
摘要： Improved ethylene polymer fibrils are provided which are characterized in having:(a) a melt temperature of at least about 137.degree. C.,(b) a molecular weight of at least 250,000,(c) at least about 1.2 weight % of polyvinyl alcohol sorbed thereon, and(d) a zero-span breaking length of at least about 25,000.Water-laid sheets prepared from the fibrils have the following minimum factored values:Mullen Burst: 30 psiElmendorf Tear Strength: 300 grams/sheetTensile Strength: 15 lbs/inchElongation at Break: 40%
摘要翻译： 提供了改进的乙烯聚合物原纤维，其特征在于具有：（a）至少约137℃的熔融温度，（b）至少250,000的分子量，（c）至少约1.2重量％的聚乙烯醇 吸附在其上，（d）零跨度断裂长度至少约为25,000。 从原纤维制备的水性片材具有以下最小因子值：马伦爆裂：30 psi Elmendorf撕裂
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公开(公告)号：US4134931A
公开(公告)日：1979-01-16
申请号：US887163
申请日：1978-03-16
摘要： A process is disclosed for treating high molecular weight olefin polymer fibrils in the presence of an aqueous solution of polyvinyl alcohol while subjecting the solution to ultrasonic vibrations.
摘要翻译： 公开了一种在聚乙烯醇水溶液存在下处理高分子量烯烃聚合物原纤维的方法，同时使溶液进行超声波振动。
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10.发明授权Utilization of constituents of effluent from the manufacture of styrene bead polymers in the manufacture of fibrids 失效利用来自制造苯乙烯珠聚合物的流出物的成分在纤条体的制造中
公开(公告)号：US4104341A
公开(公告)日：1978-08-01
申请号：US674148
申请日：1976-04-06
IPC分类号： C02F1/52 , C02F1/54 , C08J11/04 , C08J11/08 , D01D5/11 , D01F6/22 , D01F6/56 , D01F13/04 , B22D23/08
CPC分类号： D21H5/202 , C08J11/04 , D21H13/14 , Y02P20/143 , Y02W30/70
摘要： A process for the manufacture of fibrids by dissolving, in a solvent, macromolecular waste materials from the bead polymerization of styrenes, and introducing the solution into a precipitation medium under the action of shearing forces to form fibrids.
摘要翻译： 通过在溶剂中溶解来自苯乙烯珠粒聚合的大分子废料，并在剪切力的作用下将溶液引入沉淀介质中以形成纤条体，来制造纤条体的方法。
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