Absorbent article with adhesive strip

Surgery – Respiratory method or device – Ozone or ion generation

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Details

260 336AQ, 260876B, 428 40, 428355, A61F 1316, C08K 501, C09J 702

Patent

active

041366999

ABSTRACT:
The disclosed article (e.g. a sanitary napkin) typically comprises (1) an elongated absorbent pad, (2) an outer covering layer in adherent contact with at least one surface of the pad, (3) an adhesive strip or layer on the exposed surface of the outer layer, and (4) a release liner for protecting the adhesive layer. The adhesive layer is useful for removably attaching the article to the inside of an undergarment or the like. Production of the article can be greatly simplified by using a hot-melt pressure sensitive adhesive (PSA) as the adhesive layer. However, the rubbery base for the hot-melt PSA should be very carefully selected. Two types of rubbery polymers provide good results, i.e. (a) an A-B-A block copolymer having polystyrene end blocks and a rubbery poly(ethylene-butylene) midblock and (b) a radial teleblock copolymer with branches having polystyrene terminal blocks and a butadiene segment in the center. One or both of these rubbery polymers is used to formulate the hot-melt PSA along with a suitable tackifier and a process oil.

REFERENCES:
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patent: 3672371 (1972-06-01), Roeder
patent: 3686107 (1972-08-01), Russell
patent: 3862068 (1975-01-01), Russell
patent: 3897783 (1975-08-01), Ginocchio
patent: 3932327 (1976-01-01), Naylor
patent: 3935338 (1976-01-01), Robertson
patent: 3954692 (1976-05-01), Downey
patent: 3956223 (1976-05-01), Chiang et al.
patent: 4028292 (1977-06-01), Korpman

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