Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

Shell Oil Comapny

Ramsis Gobran

Charles E Boyer, Iii

Robert J Kinney

Roland R Midgley

Ruben E Velasquez Urey

Steven S Chin

John A Miller

A diaper construction is provided with an external porous reinforcement strip at the front part of the outside of the diaper, which strip provides reinforcement against an adhesive fastening tab and provides an oil contamination tolerant adhesion surface.

Oil-tolerant reinforcement strip

A diaper construction is provided with an external porous reinforcement strip at the front part of the outside of the diaper, which strip provides reinforcement against an adhesive fastening tab and provides an oil-contamination tolerant adhesion surface.

A pressure-sensitive adhesive closure system for a disposable diaper, or the like, in which a pressure-sensitive adhesive fastening tab releasably attaches to a non-blocking thin diaper backsheet which has been treated to raise the surface energy and pattern printed, preferably in a polar solvent, in a discrete area with a release material. The release material prevents the backsheet from blocking in roll form and allows the pressure-sensitive adhesive fastening tab to be removed from the backsheet without destruction of the backsheet.

Repositionable tape closure system for a thin film article

A non-yellowing pressure-sensitive adhesive tape with a polyolefin film layer and a fibrous web layer. A propylene film layer has an an antioxidant package of:

Non-yellowing tape article

Diaper fastening tab closure

A hot melt coatable pressure-sensitive adhesive is provided showing high levels of adhesion to low surface energy films and nonwovens. The adhesive elastomeric phase comprises from 78 to 98 parts by weight of a diblock A-B type block copolymer with an elastomeric block of 1,3-polybutadiene with 2 to 22 parts by weight of multiblock A-B type block copolymer. The tackifying material comprises 140 parts or less of a solid tackifying resin and a liquid tackifier to provide an adhesive having a composite midblock glass transition temperature of less than -10.degree. C.

Hot-melt-coatable adhesives

A linear styrene-isoprene-styrene block copolymer composition comprised of linear polymeric blocks wherein the block copolymer composition has a coupling efficiency of 25 to 82 percent, a polystyrene content of from 19 to 27 percent by weight, a polystyrene block molecular weight (peak polystyrene equivalent molecular weight as determined by gel permeation chromatography) of 12,000 to 18,000, and an overall molecular weight (peak polystyrene equivalent molecular weight as determined by gel permeation chromatography) of from 170,000 to 280,000. The invention also contemplates adhesive formulations comprising these block copolymer compositions and a tackifying resin.

Styrene-isoprene-styrene block copolymer composition and adhesives made

A novel 2-substituted butadiene block copolymer is provided which provides adhesives having superior adhesion and tolerance to oil contaminated surfaces. The elastomeric block has a glass transition temperature of less than about minus 65.degree. C. with the 2 substituent being an alkyl group.

Block polymers and oil-contamination tolerant adhesive compositions

Pressure-sensitive adhesive capable of functioning as an adhesive for diaper closure tape, comprising a blend of specified portions of styrene:butadiene AB block copolymer, random SBR and/or milled natural rubber, and rosin ester tackifier of the type capable of tackifying butadiene-based rubbers.

Pressure-sensitive adhesive and tape made therewith

A pressure-sensitive adhesive tape which not only conforms well and adheres quickly to irregular substrates but also possesses excellent shear adhesion performance. These properties, normally mutually exclusive, are achieved through use of superposed plural pressure-sensitive adhesive strata, the outer stratum being significantly softer than the one lying immediately beneath it.

Pressure-sensitive tape having a plurality of adhesive layers

Pressure-sensitive adhesive tape, having an untensilized crystalline isotactic polypropylene or linear high density polyethylene film backing with a pattern of alternating ridges and valleys on one side, is especially adapted for use as a tab closure for diapers. The ridges are so disposed that, when a tab is cut from the tape, at least some of the ridges extend at an angle of 60.degree. or less to the lateral edge of the tab, thereby minimizing any tendency toward inadvertent tearing.

Diaper closure utilizing pressure-sensitive adhesive tape having

Non-conjugated dienes are reacted with phenolic compounds in the presence of a Friedel-Crafts catalyst to produce poly(phenol/diene) copolymer resin having repeating alternate phenol and diene units, a number average molecular weight of 600 - 5000 and a glass transition temperature of 100.degree.- 220.degree. C. The resin, and its partially or fully hydrogenated counterpart, can be blended with various rubbery polymers to provide adhesive compositions having improved adhesive tack.

Poly(phenol/diene) resin and rubber adhesive compositions tackified

Adhesive compositions having a high degree of adhesive tack are provided by certain rubbery materials which are blended with a phenol-diene-olefin resinous reaction product.

Growing community of inventors

Roseville, MN, United States of America

Ramsis Gobran