Antibiotic zeolite-containing film
AssigneesShingawa Fuel Co., Ltd, Shinanen New Ceramic Corporation
InventorsReiji Niira, deceased, Tatuo Yamamoto, Masashi Uchida
Life of this patent
Estimating the term…
Abstract
An antibiotic film comprises at least one organic polymeric film containing antibiotic zeolite, in which the content of the antibiotic zeolite is 10 to 100 mg per 1 m.sup.2 of the organic polymeric film and the thickness of the organic polymeric film is not more than 15 microns and an antibiotic laminated film comprises a substrate, at least one side of which is laminated with the aforementioned antibiotic film. These films exhibit excellent antibiotic action although they contain rather small amount of antibiotic zeolite and the films also exhibit high transparency. These films can be used as materials for packaging foods, medical equipments and accessories and the like.
Claims16
A transparent self supporting antibiotic film comprising at least one organic polymeric film containing antibiotic zeolite, the content of the antibiotic zeolite being 25 to 100 mg per 1 m.sup.2 of the organic polymeric film and the thickness of the organic polymeric film being not more than 10 microns, the antibiotic zeolite being selected from those of which ion-exchangeable ions are partially or completely ion-exchanged with antibiotic ions selected from the group consisting of silver, copper and zinc ions, and the antibiotic metal ions being contained in the zeolite in an amount ranging from 0.1 to 15% by weight on the basis of the weight of the zeolite;
- wherein antibiotic activity is fully effective and complete (100%).
An antibiotic film according to claim I wherein the antibiotic film further comprises at least one discoloration inhibitor selected from the group consisting of ultraviolet absorbers, antioxidants, light stabilizers, ultraviolet stabilizers, processing stabilizers, metal deactivators and fluorescent whiteners.
A transparent antibiotic laminated film comprising a substrate, at least one side of which is laminated with an organic polymeric film containing antibiotic zeolite, the content of the antibiotic zeolite being 25 to 100 mg per 1 m.sup.2 of the organic polymeric film and the thickness of the organic polymeric film being not more than 10 microns, the antibiotic zeolite being selected from those of which ion-exchangeable ions are partially or completely ion-exchanged with antibiotic ions selected from the group consisting of silver, copper and zinc ions, and the antibiotic metal ions being contained in the zeolite in an amount ranging from 0.1 to 15% by weight on the basis of the weight of the zeolite;
- wherein antibiotic activity is fully effective and complete (100%).
A transparent self supporting antibiotic film comprising at least one organic polymeric film containing an antibiotic zeolite having a particle size of not more than 6 microns, the content of the antibiotic zeolite being 25 to 100 mg per 1 m.sup.2 of the organic polymeric film and the thickness of the organic polymeric film being not more than 10 microns, the antibiotic zeolite being selected from those of which ion-exchangeable ions are partially or completely ion-exchanged with antibiotic ions selected from the group consisting of silver, copper and zinc ions, and the antibiotic metal ions being contained in the zeolite in an amount ranging from 0.1 to 15% by weight on the basis of the weight of the zeolite;
- wherein antibiotic activity is fully effective and complete (100%).
Dependencies are inferred from the claim text.