Pressure sensitive adhesive tape and disposable diaper

Claim 2

The tape of claim 1 wherein said backing is a unified paper including Kraft fibers beater treated with acrylonitrile rubber.

Claim 3

The tape of claim 2 wherein said backsize coating comprises the following proportions of ingredients: 100 parts polyvinyl chloride, 50 to 150 parts polyacrylate, and 30 to 195 parts titanium dioxide.

Claim 4

The tape of claim 3 wherein said backsize further includes about 20 to 65 parts of a decorative pigment per 100 parts of resin and is applied in the amount of about 10 to 25 lbs. per 3, 000 sq. ft.

Claim 5

The tape of claim 4 wherein the adhesive is applied in the amount of about 0.8 to 1.8 oz. per square yard and comprises, in parts by weight: Block copolymer - 100 parts Polyolefin tackifier - 75 to 150 parts Antioxidant - 0.5 to 3.0 parts Naphthenic oil - 10 to 75 parts Filler - 0 to 50 parts

Claim 6

A diaper tape adapted for use as fasteners with disposable diapers of the type combining an absorbent pad with a fluid pervious cover and a fluid impervious thin film backing comprising, a reinforced fibrous backing, a backsize of from 10 to 20 lbs./3,000 sq. ft. of pigmented polyvinyl chloride plasticized with a polyacrylate on one side of said backing, a release coat of from 0.1 to 1.0 lbs./3,000 sq. ft. of catalyst-cured silicone rubber over said backsize, and an adhesive on the side of said backing opposite from said backsize and release coat, said adhesive comprising an aggressively tacky block copolymer of isoprene and styrene tackified with a polyolefin.

Claim 7

An improved disposable diaper of the type having an absorbent pad with a fluid-pervious cover, a fluid-impervious thin film backing, and pressure sensitive adhesive tape fastening means, the improvement wherein said pressure sensitive adhesive tape comprises, a reinforced fibrous backing, a backsize coating of polyvinyl chloride plasticized with a polyacrylate on one side of said backing, a release coating of catalyst-cured silicone rubber over said backsize, and an adhesive coating on the side of said backing opposite from said backsize and release coatings, said adhesive comprising an aggressively tacky block copolymer of isoprene and styrene tackified with a polyolefin, and extended with a naphthenic oil.

Claim 8

The diaper of claim 8 wherein said tape backsize coating is applied in the amount of about 10 to 25 lbs./3,000 ft.2 and comprises the following proportions of ingredients: 100 parts polyvinyl chloride, 50 to 150 parts polyacrylate, and 30 to 195 parts pigment.

Claim 9

The diaper of claim 9 wherein said tape adhesive is applied in the amount of from about 0.8 oz. to 1.8 oz. per square yard and comprises, in parts by weight: Block copolymer - 100 parts Polyolefin tackifier - 75 to 150 parts Antioxidant - 0.5 to 3.0 parts Naphthenic oil - 10 to 75 parts Filler - 0 to 50 parts