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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0330001 (2002-12-26) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 26 인용 특허 : 398 |
An elastic strand laminate, and a method of making an elastic strand laminate. The elastic strand laminate includes a plurality of self-adhering elastic strands made up of an elastomeric adhesive composition. The self-adhering elastic strands can be laminated to one or more facing sheets using conve
An elastic strand laminate, and a method of making an elastic strand laminate. The elastic strand laminate includes a plurality of self-adhering elastic strands made up of an elastomeric adhesive composition. The self-adhering elastic strands can be laminated to one or more facing sheets using conventional hot melt equipment.
1. An elastic laminate, comprising:at least one facing sheet; and a plurality of strands of a melt-tank processable elastomeric construction adhesive composition self-adhered to the at least one facing sheet; the elastomeric adhesive composition including at least 55% by weight of a base polymer sel
1. An elastic laminate, comprising:at least one facing sheet; and a plurality of strands of a melt-tank processable elastomeric construction adhesive composition self-adhered to the at least one facing sheet; the elastomeric adhesive composition including at least 55% by weight of a base polymer selected from the group consisting of polystyrene-polyethylene-polypropylene-polystyrene (SEPS) block copolymer, styrene-isoprene-styrene (SIS) block copolymer, styrene-butadiene-styrene (SBS) block copolymer, thermoplastic polyurethane, ethylene-propylene-diene copolymers, and combinations thereof, and at least 30% by weight of a high softening point tackifier resin comprising at least one type of hydrocarbon selected from the 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 Celsius; wherein the elastomeric construction adhesive composition has a viscosity of about 5,000 to 80,000 cps at between 177 and 204 degrees Celsius. 2. The elastic strand laminate of claim 1, wherein the plurality of strands are spaced apart on the at least one facing sheet by about 2 to about 6 strands per centimeter.3. The elastic strand laminate of claim 1, wherein each of the plurality of strands has a diameter between 0.25 and 0.64 centimeter.4. The elastic strand laminate of claim 1, wherein the at least one facing sheet comprises a nonwoven web selected from a spunbond web and a meltblown web.5. The elastic strand laminate of claim 1, wherein the at least one facing sheet comprises a film.6. The elastic strand laminate of claim 1, wherein the base polymer has a melt flow rate between about 5 and about 200 grams per minute, a Shore A hardness between about 20 and about 70, and may be stretched up to about 1300%.7. The elastic strand laminate of claim 1, wherein the elastomeric adhesive composition further comprises a low softening point additive having a softening point of less than 80 degrees Celsius and a viscosity of less than 1000 cps at 182 degrees Celsius, present in an amount between about 0% and about 20% by weight.8. The elastic strand laminate of claim 1, wherein the elastomeric adhesive composition further comprises an antioxidant in an amount between about 0.1% and about 1.0% by weight.9. The elastic strand laminate of claim 1, wherein the composition has a viscosity of about 10,000 to 50,000 cps at between 177 and 196 degrees Celsius.10. The elastic strand laminate of claim 1, wherein e laminate has a basis weight between about 20 and about 120 grams per square meter.11. The elastic strand laminate of claim 1, wherein the laminate exhibits a stretch-to-stop ratio of at least 50%.12. The elastic strand laminate of claim 1, wherein the laminate exhibits a stretch-to-stop ratio of at least 150%.13. The elastic strand laminate of claim 1, wherein the laminate exhibits a stretch-to-stop ratio of at least 250%.14. The elastic strand laminate of claim 1, wherein the laminate has tension of at least 100 grams per inch at 100% elongation.15. The elastic strand laminate of claim 1, wherein the laminate has tension of at least 200 grams per inch at 100% elongation.16. An elastic laminate, comprising:a first facing sheet and a second facing sheet; and a plurality of strands of an elastomeric construction adhesive composition self-adhered between the first facing sheet and the second facing sheet, and spaced apart by about 2 to about 6 strands per centimeter; the elastomeric adhesive composition including at least 55% 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, thermoplastic polyurethane, ethylene-propylene-diene (EPDM) copolymer, and combinations thereof; and at least 30% by weight of a high softening point tackifier resin comprising at least one type of hydrocarbon selected from the 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 Celsius; wherein the elastomeric construction adhesive composition has a viscosity of about 5,000 to 80,000 cps at between 177 and 204 degrees Celsius and the spaced apart strands have diameters of at least 0.25 centimeter. 17. The elastic strand laminate of claim 16, wherein at least one of the first and second facing sheets comprises a nonwoven web selected from a spunbond web and a meltblown web.18. The elastic strand laminate of claim 16, wherein at least one of the first and second facing sheets comprises a film.19. The elastic strand laminate of claim 16, wherein the elastomeric adhesive composition further comprises a low softening point additive having a softening point of less than 80 degrees Celsius and a viscosity of less than 1000 cps at 182 degrees Celsius.20. The elastic strand laminate of claim 16, wherein the elastomeric adhesive composition further comprises an antioxidant in an amount between about 0.1% and about 1.0% by weight.21. The elastic strand laminate of claim 16, wherein the laminate exhibits less than 10% creep after aging at 38 degrees Celsius for 90 minutes.22. The elastic strand laminate of claim 16, wherein the laminate exhibits a stretch-to-stop ratio of at least 200%.
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