Adhesive for secure topical attachment to the skin and comfortable removal
AssigneeThe Procter & Gamble Company
InventorsFabio Cinelli, Peter Coles, Italo Corzani
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Abstract
The present invention relates to a combination of a substrate with topical adhesives for attachment to the skin. In particular the present invention relates to a combination of a substrate with a topical adhesive which can be employed for attachment to the skin in the area where absorption of bodily liquids is desired. The combination provides secure attachment and is pleasing to the skin upon application, yet causes no discomfort upon removal. This is achieved by selecting the chemical composition and rheological characteristics of the topical adhesives and the physical characteristics of the substrate on which the topical adhesive is applied.
Claims10
A combination of a substrate with a hydrophobic topical adhesive applied thereon, said adhesive comprising at least 80% by weight of hydrophobic components, said combination intended for attachment of a disposable absorbent article to the skin, said combination having a stiffness S measured in grams (g) according to the Flexibility Test herein, said topical adhesive having an elastic modulus at a temperature of 37° C. (100° F.), G′37, in the range of 3000 Pa to 10000 Pa, a viscous modulus at a temperature of 37° C. (100° F.), G″37, in the range of 300 Pa to 5000 Pa, a viscous modulus at a temperature of 25° C. (77° F.), G″25, characterized in that said viscous modulus G″25 (100 rad/sec) of said topical adhesive and said stiffness S of said substrate satisfy the following equation:
- G″25≦[(163.8+S).50.9]Pa
- and wherein the ratio
- G′37 (100 rad/sec)-G″37 (100 rad/sec)
- G″37 (1 rad/sec)-G″37 (1 rad/sec)
- is in the range 1 to 1.8.
Dependencies are inferred from the claim text.