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    Fluid-permeable materials and process of making the same
    1.
    发明授权
    Fluid-permeable materials and process of making the same 失效
    流体渗透材料及其制造方法

    公开(公告)号：US3246767A

    公开(公告)日：1966-04-19

    申请号：US21515162

    申请日：1962-08-06

    Applicant: PALL CORP

    Inventor： PALL DAVID B ,  KEEDWELL CYRIL A

    IPC: A61M5/165 ,  B01D29/11 ,  B01D39/14 ,  B01D39/16 ,  B01D39/18 ,  B01D39/20 ,  B29C65/56 ,  C02F1/00 ,  D21F11/04 ,  H01M2/16

    CPC classification number: D21F11/04 ,  B01D29/111 ,  B01D29/21 ,  B01D29/58 ,  B01D39/16 ,  B01D39/18 ,  B01D39/20 ,  B01D2101/005 ,  B01D2239/0471 ,  B01D2239/10

    Abstract: 1,063,244. Porous coated sheet material; fluid filtering medium. LLOYD & HILLMAN Ltd. Aug. 6, 1963 [Aug. 6, 1962], No. 30990/63. Headings B1D, BIT and B2E. A medium capable of removing ultrafine particles from fluids comprises a porous base e.g. of paper, and a micro-porous layer adherent thereto. This layer comprises fibres of which a significant proportion extend outwards from the base at an angle of at least 30 degrees and has a maximum pore diameter of 10 microns and a voids volume of at least 75%. It may be made by applying to the base a dispersion comprising a dispersing fluid and particulate fibrous material and controlling the type, size and number of fibres and the state of their dispersion to obtain the required properties when the fibrous material is deposited on the base. Successive layers may be applied in this way. The first applied layer may be a binding layer containing a binder, or the or each main coating layer may contain a binder, e.g. an epoxy resin phenol-, urea-, melamineformaldehyde resins, polyester resins, polyethylene, polypropylene, polyoxymethylene, polyisobutylene, polyamides, cellulose acetate, ethylcellulose, vinyl chloride copolymerised with vinyl acetate, polyvinyl chloride, polyvinylidene chloride, polyvinyl butyral, p.t.F.e., polytrifluorochloroethylene, ligrin-sulphonate resins, starch, casein, terpene resins, polyacrylic resins, alkyd resins, synthetic rubbers such as butadiene-styrene copolymers. The fibrous material may be potassium titanate, asbestos or glass. The dispersion may also include a non-fibrous particulate material, e.g. silica.

    Process for preparing integral absorbent pad bandages and product
    6.
    发明授权
    Process for preparing integral absorbent pad bandages and product 失效
    一体化吸收垫绷带和产品的制备方法

    公开(公告)号：US3900027A

    公开(公告)日：1975-08-19

    申请号：US43032774

    申请日：1974-01-02

    Applicant: PALL CORP

    Inventor： KEEDWELL CYRIL A

    IPC: A61F13/00 ,  A61F13/02 ,  A61L15/24 ,  A61F7/02 ,  A61L15/00

    CPC classification number: A61L15/24 ,  A61F13/00987 ,  A61F13/0276 ,  C08L23/10 ,  C08L23/20 ,  C08L2205/16 ,  C08L23/12

    Abstract: A process is provided for making integral absorbent pad bandages from nonwoven thermoplastic fibrous sheet material, compressing the sheet in selected portions to reduce thickness and porosity and delimit an absorbent pad portion having a greater thickness. The resulting sheet material has a plurality of juxtaposed integral absorbent pad bandages, which can be cut off to obtain individual bandages. The individual bandages are in one piece, and can have adhesive applied thereto if desired.

    Abstract translation: 提供了一种用于由非织造热塑性纤维片材制成整体的吸收垫绷带的方法，以选定的部分压缩片材以减小厚度和孔隙率并界定具有更大厚度的吸收垫部分。 所得到的片材具有多个并置的整体式吸收垫绷带，其可被切断以获得单独的绷带。

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