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    Nonwoven sheet products made from plexifilamentary film fibril webs
    1.
    发明授权
    Nonwoven sheet products made from plexifilamentary film fibril webs 失效
    由丛状薄膜原纤维网制成的无纺布片材

    公开(公告)号：US06070635A

    公开(公告)日：2000-06-06

    申请号：US62349

    申请日：1998-04-17

    申请人： Ralph A. Franke ,  Hyun S. Lim ,  Michael P. Milone ,  R. Gail Raty ,  Akhileswar G. Vaidyanathan

    发明人： Ralph A. Franke ,  Hyun S. Lim ,  Michael P. Milone ,  R. Gail Raty ,  Akhileswar G. Vaidyanathan

    IPC分类号： D04H1/72 ,  D04H3/16 ,  G01B11/24 ,  G01R9/00

    CPC分类号： D04H3/16 ,  D04H1/724 ,  Y10S428/903 ,  Y10T428/24826 ,  Y10T428/24942 ,  Y10T428/24992 ,  Y10T428/249978 ,  Y10T442/608

    摘要： This invention relates to improved sheet products and specifically to improved nonwoven sheet products made from highly oriented plexifilamentary film-fibril webs. The improved sheet products have high opacity and strength with a much wider range of porosity or Gurley Hill Porosity Values. In particular, sheet products made in accordance with the present invention have considerably higher Gurley Hill Porosity Values than similar weight sheet products subject to the same finishing treatments in accordance with prior known sheet materials. Similarly, sheet products made in accordance with the present invention can be made which have much lower Gurley Hill Porosity Values than prior sheet materials. The invention includes numerous methods and data characterizing the webs and sheets that form the improved sheet materials.

    摘要翻译： 本发明涉及改进的片材产品，特别涉及由高取向的有丝纤维膜 - 原纤维网制成的改进的非织造片材产品。 改进的片材产品具有高的不透明度和强度，具有更宽的孔隙率或Gurley Hill孔隙度值。 特别地，根据本发明制成的片材产品具有相当高的古利山孔隙度值，而不是按照现有的已知片材进行相同的整理处理的类似重量片材产品。 类似地，可以制造根据本发明制成的片材产品，其具有比先前的片材材料低得多的古利山孔隙度值。 本发明包括形成改进的片材的幅材和片材的许多方法和数据。

    Process for modifying porosity in sheet made from flash spinning olefin polymer
    3.
    发明授权
    Process for modifying porosity in sheet made from flash spinning olefin polymer 失效
    用于改善由快速纺丝烯烃聚合物制成的片材中的孔隙率的方法

    公开(公告)号：US5833900A

    公开(公告)日：1998-11-10

    申请号：US685368

    申请日：1996-07-23

    申请人： Ralph A. Franke ,  Hyun S. Lim ,  Larry Ray Marshall

    发明人： Ralph A. Franke ,  Hyun S. Lim ,  Larry Ray Marshall

    IPC分类号： D01D5/11 ,  D04H1/42 ,  D04H1/56 ,  D04H3/16

    CPC分类号： D01D5/11 ,  D04H1/724

    摘要： This invention relates to a system and process for modifying the resulting properties of a flash spun plexifilamentary film-fibril web and spunbonded nonwoven sheets made from such webs. In particular, the system includes specifically designed letdown chamber arrangements wherein the solution of polymer and spin agent transitions from a single phase solution to a two phase solution in the letdown chamber prior to spinning at the spin orifice. The method comprises altering the configuration of the letdown chamber to alter the properties of the web and the sheet products made therefrom.

    摘要翻译： 本发明涉及一种用于改变闪纺的有丝纤维膜 - 原纤维纤维网和由这种纤维网制成的纺粘非织造纸的所得性质的系统和方法。 特别地，该系统包括特别设计的减压室结构，其中聚合物和旋转剂的溶液在旋转孔口旋转之前从单相溶液转移到减压室中的两相溶液。 该方法包括改变下料室的构型以改变幅材和由其制成的片材产品的性质。

    Hydroentangled flash spun webs having controllable bulk and permeability
    4.
    发明授权
    Hydroentangled flash spun webs having controllable bulk and permeability 失效
    具有可控制体积和渗透性的水刺闪光网

    公开(公告)号：US5290628A

    公开(公告)日：1994-03-01

    申请号：US49641

    申请日：1993-04-21

    申请人： Hyun S. Lim ,  Robert H. Peterson ,  Roger K. Siemionko ,  James R. Vincent

    发明人： Hyun S. Lim ,  Robert H. Peterson ,  Roger K. Siemionko ,  James R. Vincent

    IPC分类号： B32B5/26 ,  B32B7/08 ,  D04H1/46 ,  B32B5/06

    CPC分类号： B32B7/08 ,  B32B5/26 ,  Y10S428/91 ,  Y10S55/02 ,  Y10T428/24322 ,  Y10T428/253 ,  Y10T442/689

    摘要： A process for hydraulically needling a web of staple fibers into an unbonded flash spun web made of continuous plexifilaments to form a spunlaced nonwoven fabric. The web of staple fibers is positioned against the unbonded flash spun web and then hydraulically needled such that the staple fibers are embedded into and entangled with the unbonded flash spun web to form a spunlaced nonwoven fabric. Optionally, the spunlaced nonwoven fabric can be thermally bonded to maintain or increase the permeability of the fabric. Thermal bonding can be used to control the level of permeability depending on the end-use desired. Spunlaced nonwoven fabrics made by the inventive process are particularly useful in filtration applications (e.g., vacuum cleaner bags) when thermal bonding is employed and as bulky, downproof and featherproof barrier liners for garments, sleeping bags, pillows, comforters and the like when thermal bonding is not employed.

    摘要翻译： 一种用于将短纤维纤维网卷入未连接的由连续的丛状纤维制成的闪纺纤维网以形成水刺无纺织物的方法。 短纤维网被定位成抵抗未结合的闪纺织物，然后液压针刺，使得短纤维嵌入并与未结合的闪纺纺丝网缠结以形成水刺无纺织物。 任选地，水刺非织造织物可以热粘合以保持或增加织物的渗透性。 根据所需的最终用途，可以使用热粘合来控制渗透性水平。 当使用热粘合时，通过本发明方法制造的水刺非织造织物在过滤应用（例如，真空吸尘器袋）中特别有用，并且当热粘合时用于衣服，睡袋，枕头，棉被等的体积大，防水和防羽毛的屏障衬里 没有就业

    Process for bonding and stretching nonwoven sheet
    7.
    发明授权
    Process for bonding and stretching nonwoven sheet 失效
    粘合和拉伸非织造薄片的方法

    公开(公告)号：US4652322A

    公开(公告)日：1987-03-24

    申请号：US835011

    申请日：1986-02-28

    申请人： Hyun S. Lim

    发明人： Hyun S. Lim

    IPC分类号： D04H1/54 ,  D04H13/02 ,  B29C55/06

    CPC分类号： D04H1/54

    摘要： Fibrous polyolefin nonwoven sheets are bonded and stretched in a continuous, multiple stage process. First, the sheet is heated without significant stretching to a temperature that is close to, but below, the melting temperature of the polyolefin. Then, as the sheet is forwarded to a first stretching stage, the sheet temperature is decreased by 5.degree. to 40.degree. C. and thereafter the sheet is alternately heated and cooled as it passes through successive stretching stages, before final cooling to below 60.degree. C. In comparison to similar sheets bonded and stretched at constant temperature, the sheets produced by the process of the present invention are significantly more uniform in thickness.

    摘要翻译： 纤维聚烯烃非织造布在连续的多阶段工艺中粘结和拉伸。 首先，片材被加热而不显着拉伸至接近但低于聚烯烃熔融温度的温度。 然后，当片材被送到第一拉伸阶段时，片材温度降低5℃至40℃，此后，片材经过连续的拉伸阶段交替加热和冷却，最终冷却至低于60℃ 与在恒定温度下粘合和拉伸的类似片材相比，通过本发明的方法生产的片材的厚度显着更均匀。

    Controlled-porosity, calendered spunbonded/melt blown laminates
    8.
    发明授权
    Controlled-porosity, calendered spunbonded/melt blown laminates 失效
    受控孔隙率，压延纺粘/熔喷层压板

    公开(公告)号：US5308691A

    公开(公告)日：1994-05-03

    申请号：US130773

    申请日：1993-10-04

    申请人： Hyun S. Lim ,  Hyunkook Shin

    发明人： Hyun S. Lim ,  Hyunkook Shin

    IPC分类号： B32B5/26 ,  D04H1/56 ,  D04H1/72 ,  D04H3/16 ,  D04H13/00 ,  D06M17/00 ,  B32B27/00

    CPC分类号： B32B5/26 ,  D04H1/559 ,  D04H1/56 ,  Y10S428/903 ,  Y10T442/62 ,  Y10T442/66

    摘要： Controlled porosity composite sheets comprising a melt-blown polypropylene fiber web having a spunbonded polypropylene fiber sheet laminated to at least one side thereof are made by calendering an assembly of the component webs in such a manner that, when a two-layer composite sheet is made, the web of melt-blown fibers is in contact with a metal roll heated to 140.degree.-170.degree. C. operating against an unheated resilient roll; and, when a three-layer composite sheet is made, the spunbonded web in contact with the heated metal roll has a dtex per fiber value of less than 6.These composite sheets have a Gurley-Hill porosity of about 5-75 seconds, excellent mechanical and tear strengths, high water vapor penetration rate, and low liquid water permeability. They are particularly suitable for making housewrap sheets and sheets for sterile packaging. In the sterile packaging field, they are significantly better than medical paper used for the same purpose.

    摘要翻译： 包含层压在其至少一面上的具有纺粘聚丙烯纤维片的熔喷聚丙烯纤维网的控制孔隙率复合片材通过以下列方式制造：将组分纤维网的组件压制成两层复合片材制成 熔喷纤维网与加热至140-170℃的金属辊接触，对着未加热的弹性辊进行操作; 并且当制成三层复合片材时，与被加热的金属辊接触的纺粘纤维网每个纤维值的dtex小于6。这些复合片材具有约5-75秒的古利山孔隙率，优异的 机械撕裂强度高，水蒸汽渗透率高，液体透水性低。 它们特别适用于制作无菌包装的家庭用品片材和片材。 在无菌包装领域，它们显着优于用于相同目的的医用纸。