Preform and container having debossed support flange

• US 8,308,005 B2
• Filed: 01/30/2008
• Issued: 11/13/2012
• Est. Priority Date: 01/30/2008
• Status: Active Grant

• Current Assignee: Amcor Rigid Packaging USA LLC (Amcor Plc)
• Original Assignee: Amcor Limited (Amcor)
• Inventors: Penny, Michael E.
• Primary Examiner(s): Stashick, Anthony
• Assistant Examiner(s): MCKINLEY, CHRISTOPHER BRIAN
• Application Number:
  US12/011,975
• Publication Number:
  US 20090188888A1
• Time in Patent Office: 1,749 Days
• Field of Search: 215/382, 215/329, 215/40, 215/42, 215/46, 215/250, 215/252
• US Class Current: 215/329
• CPC Class Codes: B29B 11/08 Injection moulding
• CPC Class Codes: B29B 11/14 characterised by structure or composition
• CPC Class Codes: B29C 2049/7831 characterised by pressure values or ranges
• CPC Class Codes: B29C 2049/7862 characterised by temperature values or ranges
• CPC Class Codes: B29C 2049/78645 characterised by temperature values or ranges
• CPC Class Codes: B29C 2949/0715 the preform having one end closed
• CPC Class Codes: B29C 2949/072 having variable wall thickness
• CPC Class Codes: B29C 2949/073 having variable diameter
• CPC Class Codes: B29C 2949/0773 Threads
• CPC Class Codes: B29C 2949/0776 not containing threads
• CPC Class Codes: B29C 2949/0777 Tamper-evident band retaining ring
• CPC Class Codes: B29C 2949/0779 characterised by the body
• CPC Class Codes: B29C 2949/0822 of the neck
• CPC Class Codes: B29C 2949/0824 of the tamper-evident band retaining ring
• CPC Class Codes: B29C 2949/0826 of the body
• CPC Class Codes: B29C 2949/22 at neck portion
• CPC Class Codes: B29C 2949/24 at flange portion
• CPC Class Codes: B29C 2949/26 at body portion
• CPC Class Codes: B29C 2949/28 at bottom portion
• CPC Class Codes: B29C 2949/3008 at neck portion
• CPC Class Codes: B29C 2949/3012 : at flange portion
• CPC Class Codes: B29C 2949/3016 : at body portion
• CPC Class Codes: B29C 2949/302 : at bottom portion
• CPC Class Codes: B29C 2949/3024 : characterised by the number of components or by the manufacturing technique
• CPC Class Codes: B29C 2949/3026 : having two or more components
• CPC Class Codes: B29C 2949/3032 : having components being injected
• CPC Class Codes: B29C 2949/3034 : having two or more components being injected
• CPC Class Codes: B29C 49/06 : Injection blow-moulding
• CPC Class Codes: B29C 49/071 : Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
• CPC Class Codes: B29K 2023/065 : HDPE, i.e. high density polyethylene
• CPC Class Codes: B29K 2023/12 : PP, i.e. polypropylene
• CPC Class Codes: B29K 2067/00 : Use of polyesters or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2105/258 : Tubular
• CPC Class Codes: B29L 2031/7158 : Bottles
• CPC Class Codes: B65D 1/0246 : Closure retaining means, e.g. beads, screw-threads

Abstract

The present disclosure provides a container and a method of making a container. In one example, the container includes an upper portion having a finish defining a longitudinal axis and an opening into the container. A shoulder region is integrally formed with and extends from the upper portion. A sidewall portion extends from the shoulder region to a base portion. A tamper evident (TE) band is formed on the finish and defines an outermost surface of the plastic container above the shoulder region. A neck defining a cylindrical sidewall is integrally formed with and extends between the finish and the shoulder region. The neck defines a uniform cylindrical sidewall along its entire height between the finish and the shoulder region. The container further includes a debossed support flange defined on the upper portion. The debossed support flange defines a diameter less than a diameter defined by the TE band.

Claims

1. A plastic container comprising:

an upper portion including a finish defining a longitudinal axis and an opening into the container;

a shoulder region integrally formed with and extending away from said upper portion, the shoulder region including an upper end, the shoulder region tapering only outward radially as said shoulder region extends away from said upper portion;

a sidewall portion extending from said shoulder region to a base portion, said base portion closing off an end of the plastic container;

a tamper evident (TE) band formed on said finish and defining an outermost surface of the plastic container above said shoulder region, the TE band defining a first diameter at said outermost surface;

a neck defining a cylindrical sidewall integrally formed with and extending between said finish and said upper end of said shoulder region; and

a debossed support flange defined on said upper portion and extending between said finish and said neck, said debossed support flange defining a second diameter, said first diameter being greater than said second diameter, wherein said debossed support flange tapers inward radially as said debossed support flange extends from said finish toward said neck.

2. The plastic container of claim 1 wherein said neck defines a uniform cylindrical sidewall along its entire height between said finish and said upper end of said shoulder region.

3. The plastic container of claim 1, further comprising at least one thread formed on said finish.

4. The plastic container of claim 3 wherein said TE band defines at least two disconnected radial protrusions and a gap between each respective disconnected radial protrusions.

5. The plastic container of claim 4 wherein each thread of said at least one thread defines a thread start portion and a thread run-out portion.

6. The plastic container of claim 5 wherein said thread run-out portion and said gap are disposed longitudinally such that an imaginary, non-physical line parallel to said longitudinal axis extends through said thread run-out portion and said gap.

7. The plastic container of claim 5 wherein a terminal end of said thread run-out portion and said gap are disposed longitudinally such that an imaginary, non-physical line parallel to said longitudinal axis passes through said terminal end of said thread run-out portion and said gap.

8. The plastic container of claim 5 wherein said at least one thread defines a first thread and a second thread, wherein said first thread defines a first depth at said thread start portion and said second thread defines a second depth at said thread run-out portion, wherein said thread start portion and said thread run-out portion are longitudinally aligned around said finish and said first depth is less than said second depth.

9. The plastic container of claim 8 wherein said first depth is approximately 5-50% less than said second depth.

10. The plastic container of claim 1 wherein said finish is a polyethylene terephthalate (PET) blown finish.

17. The container of claim 1, wherein said TE band includes a body and a ramped support portion, the body including the outermost surface, and the ramped support portion tapering radially inward as the ramped support portion extends away from the body toward the neck.

18. The container of claim 1, wherein an entirety of said debossed support flange tapers inward radially as said debossed support flange extends from said finish toward said neck.

11. A preform adapted to be molded into a plastic container, the preform comprising:

an upper portion including a finish defining a longitudinal axis and an opening into the plastic container;

a neck defining a cylindrical sidewall integrally formed with and extending between said finish and an upper end of a shoulder forming portion of the preform, the shoulder forming portion operable for forming a shoulder region of the plastic container, the shoulder region being integrally formed with and extending away from said upper portion, said shoulder region tapering only outward radially as said shoulder region extends away from said upper portion;

a sidewall forming portion operable for forming a sidewall portion of the plastic container, the sidewall portion extending from said shoulder region to a base portion;

a base forming portion operable for forming the base portion of the plastic container, said base portion closing off an end of the plastic container;

a tamper evident (TE) band formed on said finish and defining an outermost surface of the preform above said shoulder forming portion, the TE band defining a first diameter at said outermost surface; and

a debossed support flange defined on said upper portion and extending between said finish and said neck, said debossed support flange defining a second diameter, said first diameter being greater than said second diameter, wherein said debossed support flange tapers inward radially as said debossed support flange extends from said finish toward said neck.

12. The preform of claim 11, wherein said sidewall forming portion defines a third diameter, wherein a ratio of said second diameter relative to said third diameter is about 1.5.

13. The preform of claim 11, wherein said ratio of said second diameter relative to said third diameter is less than about 1.5.

14. The preform of claim 12 wherein said neck defines a fourth diameter, and further comprising at least one thread extending outwardly from a radial sidewall of said finish, said radial sidewall defining a fifth diameter, wherein said fifth diameter is greater than said third diameter.

15. The preform of claim 14 wherein a ratio of said fifth diameter relative to said fourth diameter is greater than about 1 and less than about 1.5.

16. The preform of claim 15 wherein said ratio of said fifth diameter relative to said fourth diameter is substantially about 1.0.

19. A plastic container comprising:

an upper portion including a finish defining a longitudinal axis and an opening into the container;

a shoulder region integrally formed with and extending away from said upper portion, the shoulder region including an upper end, the shoulder region tapering only outward radially as said shoulder region extends away from said upper portion;

a sidewall portion extending from said shoulder region to a base portion, said base portion closing off an end of the plastic container;

a tamper evident (TE) band formed on said finish and defining an outermost surface of the plastic container above said shoulder region, the TE band defining a first diameter at said outermost surface;

a neck defining a cylindrical sidewall integrally formed with and extending between said finish and said upper end of said shoulder region; and

a debossed support flange defined on said upper portion and extending between said finish and said neck, said debossed support flange defining a second diameter, said first diameter being greater than said second diameter,

wherein the finish includes a radial sidewall defining a threaded region with a plurality of threads and the TE band, and wherein the debossed support flange includes an upper end and a lower end, the radial sidewall transitioning into the upper end of the debossed support flange and the lower end of the debossed support flange transitioning into the neck.