Method of stabilizing a plastic aerosol container

Patent metadata

Field	Value
Publication number	US-9745118-B2
Application number	US-201414571654-A
Country	US
Kind code	B2
Filing date	Dec 16, 2014
Priority date	Feb 22, 2011
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A plastic aerosol container includes a main body portion that is constructed and arranged to withstand aerosol pressurization within a range that is about 50-300 psig. The plastic aerosol container also includes a finish portion that is unitary with the main body portion. The finish portion may be threaded or unthreaded. The finish portion has a side wall, an upper sealing surface, at least one helical thread and a support ledge beneath the helical thread. Reinforcement structure is positioned beneath the support ledge for reinforcing the finish portion against deformation due to the pressurization. A method of stabilizing a plastic aerosol container is also disclosed.

First claim

What is claimed is:

1. A plastic aerosol container, comprising:
a main body portion that is constructed and arranged to withstand aerosol pressurization within a range that is about 50-300 psig; and
a finish portion that is unitary with the main body portion and defines a vertical longitudinal axis, the finish portion having a side wall, an upper sealing surface, a securement structure extending outwardly from the side wall, a support ledge separate from and beneath the securement structure, and a reinforcement structure separate from and beneath the support ledge for reinforcing the finish portion against deformation due to the pressurization;
wherein the support ledge defines an outer circumference that is noncircular in at least one location; and
wherein the support ledge defines a horizontal planar upper surface about a circumference of the finish portion.

2. The plastic aerosol container of claim 1 , wherein the reinforcement structure comprises a flange that is unitary with the side wall of the finish portion.

3. The plastic aerosol container of claim 2 , wherein the flange is injection molded.

4. The plastic aerosol container of claim 1 , wherein the reinforcement structure is blow molded.

5. The plastic aerosol container of claim 1 , further comprising an aerosol dispensing closure mounted to the finish portion.

6. The plastic aerosol container of claim 5 , wherein the aerosol dispensing closure is secured to the finish portion with the securement structure.

7. The plastic aerosol container of claim 1 , wherein the securement structure and the main body portion are fabricated from polyethylene terephthalate.

8. The plastic aerosol container of claim 1 , wherein a space is defined between the support ledge and the reinforcement structure, and wherein the space has a minimum vertical dimension that is at least about 1 mm.

9. The plastic aerosol container of claim 1 , wherein a space is defined between the support ledge and the reinforcement structure, and wherein the space has a minimum vertical dimension that is at least about 1.5 mm.

10. The plastic aerosol container of claim 1 , wherein the main body portion is constructed of polyethylene terephthalate.

11. The plastic aerosol container of claim 1 , wherein the main body portion is constructed of plastic.

12. The plastic aerosol container of claim 1 , wherein the finish portion and main body portion are fabricated from a material comprising at least one of the following: polyethylene terephthalate, polyethylene naphthalate, acrylonitrile, polycarbonate, polyamide, or a blend thereof.

13. The plastic aerosol container of claim 12 , wherein the material has a viscosity ranging from about 0.76 to about 0.95.

14. The plastic aerosol container of claim 1 , wherein the container has a wall thickness in the range from about 0.018 inch to about 0.022 inch.

15. The plastic aerosol container of claim 1 , wherein the securement structure comprises a threaded portion.

16. The plastic aerosol container of claim 1 , further comprising an aerosol mixture within the container.

17. A plastic aerosol container, comprising:
a main body portion that is constructed and arranged to withstand aerosol pressurization within a range that is about 50-300 psig; and
a finish portion that is unitary with the main body portion and defines a vertical longitudinal axis, the finish portion having a side wall, an upper sealing surface, a securement structure extending outwardly from the side wall, a support ledge separate from and beneath the securement structure, and a reinforcement structure separate from and beneath the support ledge for reinforcing the finish portion against deformation due to the pressurization;
wherein the support ledge comprises at least one position-registering recess defined therein; and
wherein the support ledge defines a horizontal planar upper surface about a circumference of the finish portion.

18. The plastic aerosol container of claim 17 , wherein the reinforcement structure comprises a flange that is unitary with the side wall of the finish portion.

19. The plastic aerosol container of claim 18 , wherein the flange is injection molded.

20. The plastic aerosol container of claim 17 , wherein the reinforcement structure is blow molded.

21. The plastic aerosol container of claim 17 , wherein an aerosol dispensing closure is secured to the finish portion with the securement structure.

22. The plastic aerosol container of claim 17 , wherein the securement structure and the main body portion are fabricated from polyethylene terephthalate.

23. The plastic aerosol container of claim 17 , wherein a space is defined between the support ledge and the reinforcement structure, and wherein the space has a minimum vertical dimension that is at least about 1 mm.

24. The plastic aerosol container of claim 17 , wherein a space is defined between the support ledge and the reinforcement structure, and wherein the space has a minimum vertical dimension that is at least about 1.5 mm.

25. The plastic aerosol container of claim 17 , wherein the main body portion is constructed of polyethylene terephthalate.

26. The plastic aerosol container of claim 17 , wherein the main body portion is constructed of plastic.

27. The plastic aerosol container of claim 17 , wherein the finish portion and main body portion are fabricated from a material comprising at least one of the following: polyethylene terephthalate, polyethylene naphthalate, acrylonitrile, polycarbonate, polyamide, or a blend thereof.

28. The plastic aerosol container of claim 27 , wherein the material has a viscosity ranging from about 0.76 to about 0.95.

29. The plastic aerosol container of claim 17 , wherein the container has a wall thickness in the range from about 0.018 inch to about 0.022 inch.

30. The plastic aerosol container of claim 17 , wherein the securement structure comprises a threaded portion.

31. The plastic aerosol container of claim 17 , further comprising an aerosol mixture within the container.

Assignees

• Graham Packaging Co

Inventors

• Patel Tapan Y
• Nahill Thomas E
• Guerin Stephen R

Classifications

• B65D83/38 Primary

  Details of the container body (pressure relief devices B65D83/70) · CPC title

• B29B11/08

  Injection moulding · CPC title

• B29B11/14

  characterised by structure or composition · CPC title

• B65B31/003

  Adding propellants in fluid form to aerosol containers (in solid form B65B31/10) · CPC title

• B29C49/071

  Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties · CPC title