A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 13/56 (2006.01) A61F 13/20 (2006.01) A61L 15/34 (2006.01) A61L 15/58 (2006.01)
Patent
CA 2176622
The present invention is directed to an absorbent product comprising an elongated absorbent pad having a body facing surface and a garment facing surface a portion of the garment facing surface being coated with the hot melt adhesive composition comprising: 15 to 40% by weight of a styrene-butadiene-styrene block containing 30 to 50% styrene the block copolymer having been polymerized so as to have a vinyl content greater than 35%; 30 to 70% by weight of a tackifying resin selected from the group consisting of C5-C10 aliphatic or cycloaliphatic petroleum hydrocarbon resins having a Ball and Ring softening point of 70° to 150°C.; modified hydrogenated rosins; glycerol and pentaerythritol esters of modified hydrogenated rosins; copolymers and terpolymers of natural terpenes; polyterpene resins having a softening point as determined by ASTM method E28-58T of from about 80 to 150°C; aromatic petroleum hydrocarbon resins and the hydrogenated derivatives thereof; and copolymers of aliphatic and aromatic monomers; 10 to 30% by weight of naphthenic or paraffinic oil; and 0.1 to 2% by weight of an antioxidant; characterized in that the viscosity of the adhesive is 1000 to 3500 cps at 160°C. In a preferred embodiment the hot melt adhesive is applied to the pad in a manner such that it serves as both a positioning and construction adhesive.
Dare Karen
Paul Charles W.
Raykovitz Gary F.
Riswick Martin
Ablestik Laboratories
Borden Ladner Gervais Llp
Dare Karen
Paul Charles W.
Raykovitz Gary F.
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