2.
    发明专利
    未知

    公开(公告)号:PT96091A

    公开(公告)日:1991-10-15

    申请号:PT9609190

    申请日:1990-12-05

    Applicant: HOECHST AG

    Abstract: A description is given of a multi-layer filter material composed of non-woven fabrics, which are prepared from fibres or filaments of identical or different polymers, the filter material being composed of a deep bed filter and a fine filter, both of which have a homogeneous density perpendicular to their surface, and are connected together in such a manner that the surface occupied by the connection points does not exceed 75% of the total filter surface. … The deep bed filter has a thickness 2- to 20-times that of the fine filter layer and the deep bed layer and the fine filter layer have a different packing density. … A process for the production of the filter material is also described.

    NONWOVEN ROOFING SHEET
    3.
    发明专利

    公开(公告)号:ZA857468B

    公开(公告)日:1986-05-28

    申请号:ZA857468

    申请日:1985-09-27

    Applicant: HOECHST AG

    Abstract: A nonwoven which comprises fibers or filaments consolidated with a binder and which is suitable for use as a carrier web in roofing sheets which are resistant to jump fire and radiant heat is obtained by applying, together with the binder, solid particles which are resistant to heat and fire and whose spatial extension in at least one dimension is large compared with the effective hole size of the web layer. This size ratio ensures that the solid particles form a layer on the web which becomes firmly bonded to the fiber or filament web.

    5.
    发明专利
    未知

    公开(公告)号:NO853810L

    公开(公告)日:1986-04-01

    申请号:NO853810

    申请日:1985-09-27

    Applicant: HOECHST AG

    Abstract: A nonwoven which comprises fibers or filaments consolidated with a binder and which is suitable for use as a carrier web in roofing sheets which are resistant to jump fire and radiant heat is obtained by applying, together with the binder, solid particles which are resistant to heat and fire and whose spatial extension in at least one dimension is large compared with the effective hole size of the web layer. This size ratio ensures that the solid particles form a layer on the web which becomes firmly bonded to the fiber or filament web.

    TUBULAR CASING SUITABLE FOR FOODSTUFFS AND PROCESS FOR ITS MANUFACTURE

    公开(公告)号:CA1182332A

    公开(公告)日:1985-02-12

    申请号:CA390782

    申请日:1981-11-24

    Applicant: HOECHST AG

    Abstract: Disclosed is a tubular casing comprising a fiber-reinforced regenerated cellulose wherein the fiber-reinforcement comprises a fiber web comprising thirst and second edge regions, parallel to the longitudinal axis, which are overlapped and bonded to form a tube, an impregnation layer of a thermoplastic synthetic resin applied on the entire inwardly-facing surface of the fiber-reinforcement and present in a weight per unit area of less then about 50 g/m2, the impregnation layer comprising the bond for the edge regions; and a regenerated cellulose surface on the outer surface of the fiberreinforcement. Also disclosed is a process for manufacturing the tubular casing.

    10.
    发明专利
    未知

    公开(公告)号:FI67474C

    公开(公告)日:1985-04-10

    申请号:FI813746

    申请日:1981-11-24

    Applicant: HOECHST AG

    Abstract: Disclosed is a tubular casing comprising a fiber-reinforced regenerated cellulose wherein the fiber-reinforcement comprises a fiber web comprising first and second edge regions, parallel to the longitudinal axis, which are overlapped and bonded to form a tube; an impregnation layer of a thermoplastic synthetic resin applied on the entire inwardly-facing surface of the fiber-reinforcement and present in a weight per unit area of less than about 50 g/m2, the impregnation layer comprising the bond for the edge regions; and a regenerated cellulose surface on the outer surface of the fiber-reinforcement. Also disclosed is a process for manufacturing the tubular casing.

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