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    92.
    发明专利
    未知

    公开(公告)号：DE69306254D1

    公开(公告)日：1997-01-09

    申请号：DE69306254

    申请日：1993-06-07

    Applicant: FIBERWEB NORTH AMERICA INC

    Inventor： AUSTIN JARED A ,  BERMAN MARK H S ,  DUNLEAVY RAYMOND A

    IPC: B32B5/26 ,  D04H3/03 ,  D04H3/12 ,  D04H3/16 ,  D04H13/00

    Abstract: The invention is directed to a composite nonwoven fabric comprising a nonwoven web of spunbonded substantially continuous thermoplastic filaments, a nonwoven web of thermoplastic strands, and a nonwoven web of thermoplastic meltblown microfibers sandwiched between the nonwoven web of spunbonded substantially continuous filaments and the nonwoven web of thermoplastic strands. An adhesive agent is disposed between the nonwoven web of spunbonded filaments and the nonwoven web of meltblown microfibers and between the nonwoven web of thermoplastic strands and the nonwoven web of meltblown microfibers, adhering the respective nonwoven webs together to form a unitary composite nonwoven fabric. In a preferred embodiment, the composite nonwoven fabric of the invention comprises a nonwoven web of spunbonded substantially continuous polyamide filaments, a nonwoven web of polyamide strands, and a nonwoven web of polyethylene meltblown microfibers sandwiched between the nonwoven web of spunbonded substantially continuous filaments and the nonwoven web of strands.

    93.
    发明专利
    未知

    公开(公告)号：DE69303711D1

    公开(公告)日：1996-08-22

    申请号：DE69303711

    申请日：1993-03-29

    Applicant: FIBERWEB NORTH AMERICA INC

    Inventor： TRIMBLE LLOYD ,  ZELDIN LEON ,  GRUBBS WILLIAM ,  FRANCIS JOHN

    IPC: D04H3/03 ,  D04H3/16

    Abstract: A slot draw attenuator apparatus and method are provided for producing webs of spunbonded thermoplastic filaments having improved cover even at low basis weights. The filaments are introduced to a slot draw attenuator having corona electrodes mounted in an elongate insulator bar and staggered and spaced along one wall of the attenuator slot near the exit end thereof. The corona electrodes are electrically connected to a high voltage source. The opposing wall of the slot is grounded. A corona is created in the attenuator slot so that the filaments are charged as they exit the attenuator. The electrostatic charge induces repelling forces in the filaments so that the filaments spread before they are randomly deposited upon a forming belt.

    Distribution enhanced polyolefin meltspinning process and product
    96.
    发明专利
    Distribution enhanced polyolefin meltspinning process and product 未知

    公开(公告)号：GB9522620D0

    公开(公告)日：1996-01-03

    申请号：GB9522620

    申请日：1995-11-03

    Applicant: FIBERWEB NORTH AMERICA INC

    IPC: D01F6/04 ,  D01F6/06

    Abstract: Improved meltspinning productivity is achieved by employing polyolefin resins having key molecular weight distribution and rheological property parameters within predetermined ranges. These parameters include the molecular weight distribution breadth parameter, Mz/Mn; and rheological property parameters of flow rate ratio, I10/I2, and the power law index, n, of the regression analysis viscosity equation. These parameters additionally include one or both of the z-average molecular weight, Mz, of the resin, or the second order constant, b2, of the regression analysis viscosity equation, and unless both of the latter two parameters are met, the parameters further include the die swell and the spinnability factor (determined from the relationship between die swell and MFR) of the resin.

    Composite nonwoven fabric and articles produced therefrom
    97.
    发明专利
    Composite nonwoven fabric and articles produced therefrom 未知

    公开(公告)号：AU1265595A

    公开(公告)日：1995-06-27

    申请号：AU1265595

    申请日：1994-12-01

    Applicant: FIBERWEB NORTH AMERICA INC

    Inventor： LICKFIELD DEBORAH K ,  BERMAN MARK H S ,  HYSLOP ROBERT F ,  OLESZCZUK ANDREW R ,  GESSNER SCOTT L ,  AUSTIN JARED A

    IPC: B32B5/26 ,  D01F8/14 ,  D04H3/16 ,  D04H13/00 ,  D06M17/00

    Abstract: The invention is directed to a composite nonwoven fabric comprising first and second nonwoven webs of spunbonded substantially continuous thermoplastic filaments, and a nonwoven hydrophobic microporous web of thermoplastic meltblown microfibers sandwiched between the first and second nonwoven webs. The filaments of the nonwoven spunbond webs are formed of continuous multiconstituent filaments which include a lower melting gamma radiation stable polyethylene polymer component and one or more higher melting gamma radiation stable polymer constituents, wherein a substantial portion of the surfaces of the multiconstituent filaments consists of the lower melting gamma radiation stable polyethylene constituent. The nonwoven hydrophobic microporous web is formed from a gamma radiation stable polyethylene polymer. The webs are bonded together to form the composite nonwoven fabric by discrete point bonds in which the polyethylene constituent of said multiconstituent filaments and the polyethylene of said third nonwoven web are fused together.

    Composite nonwoven fabrics
    98.
    发明专利
    Composite nonwoven fabrics 未知

    公开(公告)号：AU7335994A

    公开(公告)日：1995-02-20

    申请号：AU7335994

    申请日：1994-07-15

    Applicant: FIBERWEB NORTH AMERICA INC

    Inventor： QUANTRILLE THOMAS E ,  ZIMMERMAN GUY S JR

    IPC: B32B5/26 ,  D01G25/00 ,  D04H1/48 ,  D04H1/70 ,  D04H13/00 ,  B32B5/04 ,  B32B5/12

    Abstract: The invention provides elastic fabrics which exhibit low extensibility in the machine direction and have substantial elastic properties in the cross-machine direction. The fabrics of the invention include an elastic layer and a fibrous layer which are combined together. The fibrous layer is composed of a plurality of thermally activated binder fibers or filaments oriented substantially in the machine-direction of the fibrous web. The fabrics of the invention can be manufactured and processed more readily than fabrics which are elastic in both the machine direction and the cross-machine direction.

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