Medico-surgical and sanitary articles and materials

Details Medico-surgical and sanitary articles and materials Medico-surgical and sanitary articles and materials

1987-08-07

1989-09-19

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428 354, 4284111, 428515, 428518, 428522, 383108, 383109, 383113, 604332, 604338, B27N 502, B65D 3008, A61F 544

Patent

active

048680249

ABSTRACT:
Sheet material for making a water closet disposable article, such as a bag for body waste products, is unaffected by contact with water of neutral pH, but is degraded on contact with an alkali added to the pan of the water closet. The material may have a central layer of polyvinyl alcohol, an inner layer made up of at least two coatings of a blend of polyvinylidene chloride acrylonitrile copolymer with carboxylated acrylic copolymer, and an outer layer of at least two coatings of carboxylated acrylic acid. A similar sheet can be used to back an absorbent layer of a sanitary article, such as a diaper. In use, an alkaline substance containing triethanolamine and a surfactant, such as sodium dioctyl sulphosuccinate, is added in liquid form to the water closet pan prior to dropping in the bag or other article, so as to raise the pH of the water to about 10.

REFERENCES:
patent: 4062451 (1977-12-01), Gander
patent: 4186233 (1980-01-01), Krajewski et al.
patent: 4190562 (1980-02-01), Westerman
patent: 4242408 (1980-12-01), Evani et al.
patent: 4469728 (1984-09-01), Belz
patent: 4518388 (1984-05-01), Jensen
patent: 4620999 (1986-11-01), Holmes

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