An insulative member for surrounding and embracing an exterior surface of a hot-beverage drink cup to provide a grippable low-temperature thermal barrier that can be gripped by a consumer, the member comprising a sheet comprising insulative cellular non-aromatic polymeric material having localized p
An insulative member for surrounding and embracing an exterior surface of a hot-beverage drink cup to provide a grippable low-temperature thermal barrier that can be gripped by a consumer, the member comprising a sheet comprising insulative cellular non-aromatic polymeric material having localized plastic deformation in the sheet and providing a plastically deformed first material segment having a first density located in a first portion of the sheet and a second material segment having a second density lower than the first density located in an adjacent second portion of the sheet.
대표청구항▼
1. An insulative sleeve for surrounding and embracing an exterior surface of a hot-beverage drink cup to provide a grippable low-temperature thermal barrier that can be gripped by a consumer, the sleeve comprising a sheet comprising insulative cellular non-aromatic polymeric material having localize
1. An insulative sleeve for surrounding and embracing an exterior surface of a hot-beverage drink cup to provide a grippable low-temperature thermal barrier that can be gripped by a consumer, the sleeve comprising a sheet comprising insulative cellular non-aromatic polymeric material having localized plastic deformation in the sheet and providing a plastically deformed first material segment having a first density located in a first portion of the sheet and a second material segment having a second density lower than the first density located in an adjacent second portion of the sheet, wherein the sheet has no fractures in the insulative cellular non-aromatic polymeric material so that a predetermined insulative characteristic is maintained in the sheet. 2. The insulative sleeve of claim 1, wherein the sheet is arranged to surround a vertical central axis and the sheet includes an upright inner tab arranged to extend upwardly along and in spaced-apart relation to the vertical central axis and configured to provide the first material segment having the first density, an upright outer tab arranged to extend upwardly along and in spaced-apart relation to the vertical central axis and to mate with the upright inner tab along an interface therebetween, and an upright fence arranged to interconnect the upright inner and outer tabs and surround the vertical central axis and configured to provide the second material segment having the second density and cooperate with the upright inner and outer tabs to form a sleeve-shaped side wall. 3. The insulative sleeve of claim 2, wherein the fence has a substantially frustoconical shape and each of the upright inner and outer tabs has an arcuate shape. 4. The insulative sleeve of claim 2, wherein the upright inner tab includes an inner surface providing means for mating with a hot-beverage drink cup and an outer surface facing toward the upright outer tab, the upright outer tab includes an inner surface mating with the outer surface of the upright inner tab to define the interface between the upright inner and outer tabs, and the upright outer tab further includes an outer face facing away from the upright inner tab. 5. The insulative sleeve of claim 4, wherein each of the inner and outer surfaces of the upright inner and outer tabs has an arcuate shape in a horizontal cross-section and subtends an acute angle of less than 20°. 6. The insulative sleeve of claim 2, wherein the upright fence is C-shaped in a horizontal cross-section and each of the upright inner and outer tabs has an arcuate shape in a horizontal cross-section. 7. The insulative sleeve of claim 2, wherein the upright fence includes an upright left side edge and an upright right side edge arranged to lie in spaced-apart confronting relation to the upright left side edge and the upright outer tab is configured to have the first density and mate with the upright inner tab to establish a bridge arranged to interconnect the upright left and right side edges of the upright fence and formed of plastically deformed material having the first density. 8. The insulative sleeve of claim 7, wherein the upright fence has an inner surface facing toward the vertical central axis and providing means for mating with a hot-beverage drink cup and an outer surface facing away from the central vertical axis from the interior region and surrounding the inner surface of the upright fence and cooperating with the inner surface of the upright fence to define a first thickness therebetween, the upright inner tab includes an inner surface facing toward the vertical central axis and providing means for mating with the hot-beverage drink cup and an outer surface facing toward the upright outer tab, the upright outer tab includes an inner surface facing toward the vertical central axis and mating with the outer surface of the upright inner tab to define the interface between the upright inner and outer tabs, and the upright outer tab further includes an outer face facing away from the upright inner tab, the inner and outer surfaces of the upright inner tab cooperate to define a second thickness therebetween that is about half of the first thickness, and the inner and outer surfaces of the upright outer tab cooperate to define a third thickness that is about half of the first thickness. 9. The insulative sleeve of claim 1, wherein the first material segment in the sheet of insulative cellular non-aromatic polymeric material has a relatively thin first thickness and the second material segment in the sheet of insulative cellular non-aromatic polymeric material has a relatively thicker second thickness. 10. The insulative sleeve of claim 9, further comprising a cellular non-aromatic skin comprising a biaxially oriented polypropylene film adhered to the insulative cellular non-aromatic polymeric material. 11. The insulative sleeve of claim 1, further comprising a graphics skin coupled to an exterior surface of the insulative cellular non-aromatic polymeric material, the graphics skin including a film, an adhesive interposed between the film and the exterior surface, and an ink printed on the film to provide a graphics design. 12. The insulative sleeve of claim 11, wherein the film is biaxially oriented polypropylene. 13. The insulative sleeve of claim 1, wherein the insulative cellular non-aromatic polymeric material comprises a polypropylene base resin, a polypropylene copolymer resin, at least one nucleation agent, and gas means for expanding the resins to reduce density. 14. The insulative sleeve of claim 13, wherein the gas means comprises carbon dioxide. 15. The insulative sleeve of claim 13, wherein the polypropylene base resin has a molecular weight distribution that is unimodal. 16. The insulative sleeve of claim 13, wherein the polypropylene base resin further includes a polypropylene homopolymer resin. 17. The insulative sleeve of claim 1, wherein the insulative cellular non-aromatic polymeric material comprises a polypropylene base resin, a polypropylene homopolymer resin, at least one nucleation agent, and gas means for expanding the resins to reduce density. 18. The insulative sleeve of claim 17, wherein the gas means comprises carbon dioxide. 19. The insulative sleeve of claim 17, wherein the polypropylene base resin has a molecular weight distribution that is unimodal. 20. The insulative sleeve of claim 1, wherein the insulative cellular non-aromatic polymeric material comprises polypropylene having a molecular weight distribution that is unimodal. 21. The insulative sleeve of claim 1, wherein the first density is about 0.350 g/cm3 and the second density is about 0.175 g/cm3. 22. The insulative sleeve of claim 1, wherein the insulative cellular non-aromatic polymeric material is formed to include cells filled with gas and each cell is bounded by a cell wall provided in the insulative cellular non-aromatic polymeric material and each cell wall is configured to be inelastically deformable during exposure to localized plastic deformation. 23. The insulative sleeve of claim 1, wherein the insulative cellular non-aromatic polymeric material comprises polypropylene characterized by long-chain branching to provide a predetermined balance of processability and melt elasticity. 24. The insulative sleeve of claim 1, wherein the insulative sleeve is a blank. 25. The insulative sleeve of claim 1, further comprising a cellular non-aromatic skin comprising a biaxially oriented polypropylene film adhered to the insulative cellular non-aromatic polymeric material.
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