Granted Patent B2

US 10,654,643 · App. 16/430,652 · Granted May 19, 2020

Abstract

Claims (25)

1. An insulative sleeve comprising

an upright inner tab arranged to extend upwardly along and in spaced-apart relation to a vertical central axis and having a plastically deformed first material segment having a first density,

an upright outer tab arranged to extend upwardly along and in spaced-apart relation to the vertical central axis and arranged to mate with the upright inner tab along an interface therebetween, and

an upright fence arranged to extend around the central axis, interconnect the upright inner tab and the upright outer tab, and having a second material segment having a second density,

and a floor coupled to the upright fence,

wherein the upright inner tab, the upright outer tab, and the upright fence comprise a first formulation of insulative cellular non-aromatic polymeric material and the floor comprises a second formulation of insulative cellular non-aromatic polymeric material.

2. The insulative sleeve of claim 1 , wherein the first formulation of insulative cellular non-aromatic polymeric material comprises a polypropylene base resin, a polypropylene secondary resin, at least one nucleation agent, at least one blowing agent, and regrind from the upright inner tab, upright outer tab, and the fence made previously.

3. The insulative sleeve of claim 2 , wherein the polypropylene base resin and the polypropylene secondary resin are homopolymers.

4. The insulative sleeve of claim 3 , wherein polypropylene is greater than about 80% by weight of the first formulation of insulative cellular non-aromatic polymeric material.

5. The insulative sleeve of claim 3 , wherein polypropylene is greater than about 95% by weight of the first formulation of insulative cellular non-aromatic polymeric material.

6. The insulative sleeve of claim 5 , wherein the at least one nucleation agent is a chemical blowing agent.

7. The insulative sleeve of claim 6 , wherein the second density is about 0.15 g/cm 3 to about 0.19 g/cm 3 and wherein the insulative cellular non-aromatic polymeric material of the upright inner tab, the upright outer tab, and the upright fence is an extrudate, and cells of the extrudate have a first dimension along a first axis and a second dimension along a second axis, the second axis is normal to the first axis, and wherein an average ratio of the first dimension to the second dimension is about 1.5 to about 3.0.

8. The insulative sleeve of claim 2 , wherein the polypropylene secondary resin is a copolymer.

9. The insulative sleeve of claim 8 , wherein polypropylene is greater than about 95% by weight of the first formulation of insulative cellular non-aromatic polymeric material.

10. The insulative sleeve of claim 1 , wherein the second formulation of insulative cellular non-aromatic polymeric material comprises a polypropylene base resin, a polypropylene secondary resin, a physical nucleating agent, a chemical blowing agent, at least one blowing agent, and regrind from the floor made previously.

11. The insulative sleeve of claim 10 , wherein the polypropylene base resin and the polypropylene secondary resin are homopolymers.

12. The insulative sleeve of claim 11 , wherein polypropylene is greater than about 80% by weight of the second formulation of insulative cellular non-aromatic polymeric material.

13. The insulative sleeve of claim 11 , wherein polypropylene is greater than about 95% by weight of the second formulation of insulative cellular non-aromatic polymeric material.

14. The insulative sleeve of claim 13 , wherein the physical nucleating agent is talc.

15. The insulative sleeve of claim 10 , wherein the polypropylene secondary resin is a copolymer.

16. The insulative sleeve of claim 15 , wherein polypropylene is greater than about 95% by weight of the second formulation of insulative cellular non-aromatic polymeric material.

17. The insulative sleeve of claim 1 , wherein the first formulation of insulative cellular non-aromatic polymeric material comprises a polypropylene base resin, a polypropylene secondary resin, at least one nucleation agent, at least one blowing agent, and regrind from the upright inner tab, the upright outer tab, and the upright fence previously made and wherein the second formulation of insulative cellular non-aromatic polymeric material comprises a polypropylene base resin, a polypropylene secondary resin, a physical nucleating agent, a chemical blowing agent, at least one blowing agent, and regrind from the floor made previously.

18. The insulative sleeve of claim 17 , wherein the polypropylene base resin and the polypropylene secondary resin of both the first and second formulations are homopolymers.

19. The insulative sleeve of claim 18 , wherein polypropylene is greater than about 95% by weight of the first and second formulations of insulative cellular non-aromatic polymeric material.

20. The insulative sleeve of claim 19 , wherein the second density is about 0.15 g/cm 3 to about 0.19 g/cm 3 and wherein the insulative cellular non-aromatic polymeric material of the first formulation is an extrudate, and cells of the extrudate have a first dimension along a first axis and a second dimension along a second axis, the second axis is normal to the first axis, and wherein an average ratio of the first dimension to the second dimension is about 1.5 to about 3.0.

Assignments (29)