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    METHOD AND APPARATUS FOR FORMING A NONWOVEN FIBROUS WEB
    3.
    发明专利
    METHOD AND APPARATUS FOR FORMING A NONWOVEN FIBROUS WEB 未知

    公开(公告)号：CA962179A

    公开(公告)日：1975-02-04

    申请号：CA153252

    申请日：1972-10-04

    Applicant: SCOTT PAPER COMPANY IND HIGHWA

    Inventor： GENTILE ANTHONY R ,  HAUCK CLARENCE J III

    IPC: D04H1/70

    Abstract: A method of forming a nonwoven fibrous web from multiple laps of staple fibers, the major proportion of fibers within each lap being substantially oriented in one direction. Laps of the staple fibers are fed into overlying relationship with the major proportion of oriented fibers in each lap disposed in the same direction. Air is entrapped between adjacent laps as they are fed into overlying relationship to create an air barrier between adjacent overlying laps. The overlying laps are spread transversely of the direction in which the major proportion of fibers are oriented, and fibers within overlying laps are reoriented transversely within the plane of the laps out of the direction in which the major proportion of fibers are oriented while maintaining the air barrier between the adjacent overlying laps. The laps are pressed together after the lap spreading and fiber reorienting steps to form a unitary nonwoven fibrous web and fibers of the unitary nonwoven fibrous web are then bonded together.

    6.
    发明专利
    未知

    公开(公告)号：SE7606313L

    公开(公告)日：1976-12-05

    申请号：SE7606313

    申请日：1976-06-03

    Applicant: SCOTT PAPER COMPANY IND HIGHWA

    Inventor： FOCHT B E

    IPC: B32B5/18 ,  B29C59/00 ,  B29C69/00 ,  B32B27/00 ,  B32B37/00 ,  E04B1/84 ,  B32B3/30

    Abstract: An embossed film-to-foam laminate is provided having minute perforations through the film selectively distributed essentially along the sidewalls and valleys of the embossed pattern. The integrity of the laminated film material is retained on the crowns of the embossed patterned surface, since the perforations in the film material are mainly distributed on the sidewalls and valleys of the embossed pattern. The laminated product has a water-resistant and abrasion-resistant upper surface imparted by the film material on the crowns while the small perforations in the sidewalls and valleys permit sound to pass through the film and be exposed to the acoustical matrix of the open cell foam component of the laminate while impeding the penetration of liquids (e.g. water) through the film into the foam under the action of gravity. The film and/or the foam material are heated to supply adhesive material by melting or softening which serves to bond the film material to the foam.

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