Patents Examined by Carie Mager
  • Patent number: 6040494
    Abstract: The invention pertains to a foam material for absorption of aqueous liquids, a manufacturing method and an advantageous use of such a foam material, and an absorbent disposable article comprising such a foam material. The foam material is hydrophilic and primarily intended for use in absorbent disposable articles such as baby diapers, incontinence protectors and products for feminine hygiene. However, the foam material according to the invention is also suited for use in other absorbent articles, such as in different wiping materials, bandage materials and other similar products. The chemical structure of a surfactant, which is utilized as a combined emulsifying and hydrophilizing agent when manufacturing the foam material according to the invention, makes it possible to retain a sufficient proportion of the foam surfactant in the foam material even after repeated wettings, something which renders the foam material highly, permanently hydrophilic.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: March 21, 2000
    Assignee: SCA Hygiene Products AB
    Inventors: Pia Kalentun, Anette Buschka, Andrea Schmid, Eva Strombom