Elastomeric adhesive
First Claim
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1. An elastomeric construction adhesive composition that can be used to create a bonded, elasticized region, comprising:
- between about 55% and about 65% by weight base polymer selected from the group consisting of polystyrene-polyethylene-polypropylene-polystyrene (SEPS) block copolymer, styrene-isoprene-styrene (SIS,) styrene-butadiene-styrene (SBS) block copolymer, and combinations thereof, the base polymer having a melt flow rate between about 5 and about 100 grams per minute, a Shore A hardness between about 20 and about 70, and may be stretched up to about 1300%; and
a high softening point tackifier resin including at least one type of hydrocarbon selected from a group consisting of petroleum distillates, rosin, rosin esters, polyterpenes derived from wood, polyterpenes derived from synthetic chemicals, and combinations thereof, the tackifier having a softening point of at least 80 degrees Celsius, and a viscosity of at least 1500 cps at 182 degrees Celsius;
wherein the elastomeric adhesive composition has a viscosity of about 5,000 to 80,000 cps at between 177 and 204 degrees Celsius and can be stretched prior to lamination.
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Abstract
Elastomeric adhesive compositions including a high softening point tackifier resin in combination with a base polymer can be used to create laminates having effective adhesion and elastic properties. The compositions may also include a low softening point additive, and/or an antioxidant. Facing layers, such as nonwoven webs and/or films, can be laminated to both surfaces of the elastomeric compositions to form laminates. A method of making such compositions and laminates involves forming the compositions into elastomeric adhesive films.
456 Citations
55 Claims
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1. An elastomeric construction adhesive composition that can be used to create a bonded, elasticized region, comprising:
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between about 55% and about 65% by weight base polymer selected from the group consisting of polystyrene-polyethylene-polypropylene-polystyrene (SEPS) block copolymer, styrene-isoprene-styrene (SIS,) styrene-butadiene-styrene (SBS) block copolymer, and combinations thereof, the base polymer having a melt flow rate between about 5 and about 100 grams per minute, a Shore A hardness between about 20 and about 70, and may be stretched up to about 1300%; and
a high softening point tackifier resin including at least one type of hydrocarbon selected from a group consisting of petroleum distillates, rosin, rosin esters, polyterpenes derived from wood, polyterpenes derived from synthetic chemicals, and combinations thereof, the tackifier having a softening point of at least 80 degrees Celsius, and a viscosity of at least 1500 cps at 182 degrees Celsius;
wherein the elastomeric adhesive composition has a viscosity of about 5,000 to 80,000 cps at between 177 and 204 degrees Celsius and can be stretched prior to lamination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An elastomeric laminate, comprising:
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first and second facing sheets; and
an elastomeric adhesive composition between the first and second facing sheets thereby permanently bonding the first and second facing sheets to one another and providing elasticity in the bonded area, the elastomeric adhesive composition including between about 55% and about 65% by weight base polymer selected from the group consisting of polystyrene-polyethylene-polypropylene-polystyrene (SEPS) block copolymer, styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS) block copolymer, and combinations thereof; and
a high softening point tackifier resin including at least one type of hydrocarbon selected from a group consisting of petroleum distillates, rosin, rosin esters, polyterpenes deeerived from wood, polyterpenes derived from synthetic chemicals, and combinations thereof, the tackifier having a softening point of at least 80 degrees Celsius and a viscosity of at least 1500 cps at 182 degrees Celsius;
wherein the elastomeric adhesive composition has a viscosity of about 5,000 to 80,000 cps at between 177 and 204 degrees Celsius. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of making an elastomeric adhesive composition, comprising:
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forming a solid phase composition of about 55-65% by weight of a base polymer selected from the group consisting of polystyrene-polyethylene-polypropylene-polystyrene (SEPS) block copolymer, styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS) block copolymer, and combinations thereof, and having a melt flow rate between about 5 and about 100 grams per minute, a Shore A hardness between about 20 and about 70, and stretchable by up to about 1300%; and
a high softening point tackifier resin including at least one type of hydrocarbon selected from a group consisting of petroleum distillates, rosin, rosin, esters, polyterpenes derived from wood, polyterpenes derived from synthetic chemicals, and combinations thereof, and having a softening point of at least 80 degrees Celsius and a viscosity of at least 1500 cps at 182 degrees Celsiusforming a liquid phase composition by heating the solid phase composition;
forming a film by extruding the liquid phase composition onto a chill roll; and
peeling the film off the chill roll while stretching the film;
wherein the elastomeric adhesive composition has a viscosity of about 5,000 to 80,000 cps at between 177 and 204 degrees Celsius, and can be stretched prior to lamination. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. A garment having an elastomeric adhesive composition therein which is made by a process comprising:
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forming a solid phase composition of between about 55% and about 63% by weight base polymer selected from the group consisting of polystyrene-polyethylene-polypropylene-polystyrene (SEPS) block copolymer, styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS) block copolymer, and combinations thereof and a high softening point tackifier resin which includes at least one type of hydrocarbon selected from a group consisting of petroleum distillates, rosin, rosin esters, polyterpenes deeerived from wood, polyterpenes derived from synthetic chemicals, and combinations thereof;
having a softening point of at least 80 degrees Celsius and a viscosity of at least 1500 cps at 182 degrees Celsius;
forming a liquid phase composition by heating the solid phase composition, wherein the liquid phase composition has a viscosity of about 5,000 to 80,000 cps at between 177 and 204 degrees Celsius;
forming a film by extruding the liquid phase composition onto a chill roll;
peeling the film off the chill roll while stretching the film; and
applying the film between first and second facing sheets, thereby permanently bonding the first and second facing sheets to one another and providing elasticity in the bonded area.
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Specification