Method and apparatus for reforming a portion of a plastic container to include a three-dimensional feature or transferable element

• US 7,637,733 B2
• Filed: 02/10/2006
• Issued: 12/29/2009
• Est. Priority Date: 12/02/2004
• Status: Expired due to Fees

• Current Assignee: Graham Packaging Company LP (Graeme Richard Hart, MBA)
• Original Assignee: Graham Packaging Company LP (Graeme Richard Hart, MBA)
• Inventors: Chisholm, Brian, O'Connell, Patrick M.
• Primary Examiner(s): Davis; Robert B
• Application Number:
  US11/350,835
• Publication Number:
  US 20060127618A1
• Time in Patent Office: 1,418 Days
• Field of Search: 425/525, 425/392, 249/103, 264/509, 264/516, 156/69, 156/73.1
• US Class Current: 425/392
• CPC Class Codes: B29B 13/025 Tube ends
• CPC Class Codes: B29C 35/0805 using electromagnetic radiation
• CPC Class Codes: B29C 49/00 Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
• CPC Class Codes: B29C 57/00 Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor , e.g. collapsible mandrels
• CPC Class Codes: B29C 57/12 Rim rolling
• CPC Class Codes: B29C 59/021 of profiled articles, e.g. hollow or tubular articles, beams
• CPC Class Codes: Y10T 428/1352 Polymer or resin containing [i.e., natural or synthetic]

Abstract

A method and apparatus for reforming a portion of a blow molded plastic container includes directing energy from a heater onto the portion of the container so as to heat the portion while leaving the remainder of the container relatively unheated. The heated portion of the container is then engaged by a reforming tool having an embossed or imprinted characteristic on a contact surface of the reforming tool so as to reform the portion of the container and form a three-dimensional feature thereon which is not reproducible without using the method and/or apparatus of the present invention. Alternatively, the heated portion of the container is engaged by a reforming tool having a transferable element on a contact surface of the reforming tool so as to reform the portion of the container and transfer the transferable element to the portion of the container.

Claims

1. An apparatus for reforming a portion of a plastic container, comprising:

a previously formed and cooled plastic container having a smaller upper portion and a larger remainder;

a heater for heating only the upper portion of the container to be reformed, while leaving the remainder of the container relatively unheated;

first and second reforming tools spaced apart from the heater, defining a cavity between the first and second reforming tools receiving the upper portion of the container after the upper portion has been heated, compressing only the heated upper portion between the first and second reforming tools to eliminate manufacturing imperfections on the upper portion, and having a contact surface configured to contact and reform not more than the upper portion of the container after heating by the heater; and

at least one imprinted or embossed characteristic or at least one transferable element located on the contact surface of the reforming tools,

wherein the reforming tools are configured to transfer the at least one imprinted or embossed characteristic or at least one transferable element to the upper portion of the container when the reforming tools contact the upper portion of the container.

2. The apparatus of claim 1, wherein the transferable element is a radio frequency identification device.

3. The apparatus of claim 1, wherein the transferable element is a decorative particle.

4. The apparatus of claim 1, wherein the heater heats the portion of the container via one or both of radiation and convection heating, and not by physical contact with the portion.

5. The apparatus of claim 4, wherein the heater is selected from the group consisting of an infrared lamp, a radiant heater, a quartz lamp, focused light energy, laser energy, and a heated tool.

6. The apparatus of claim 1, wherein the heater heats the portion of the container to its softening temperature.

7. The apparatus of claim 1, further comprising a controller controlling the intensity of the heater.

8. The apparatus of claim 1, wherein the portion of the container is a neck finish end portion.

9. The apparatus of claim 1, further comprising a controller controlling the dwell time of the container adjacent to the heater.

10. The apparatus of claim 2, further comprising means for tracking the container having the radio frequency identification device.

11. The apparatus of claim 1, wherein the reforming tools are substantially unheated to simultaneously reform and cool the portion of the container upon contact.

12. The apparatus of claim 1, wherein the reforming tools include an air gap extending from the surface to vent air from between the surface and the portion of the container.

13. The apparatus of claim 1, further including a chiller coupled to the reforming tools for cooling the surface of the reforming tools.

14. The apparatus of claim 13, further including a pump for circulating liquid coolant through the reforming tools.

15. The apparatus of claim 1, wherein the at least one transferable element is a design, a pattern, a series of letters, or a series of numbers.

16. An apparatus for reforming a portion of a plastic container, comprising:

a previously formed and cooled plastic container having a smaller upper portion and a larger remainder;

a heater for heating only the upper portion of the container to be reformed, while leaving the remainder of the container relatively unheated;

first and second reforming tools spaced apart from the heater, defining a cavity between the first and second reforming tools receiving the upper portion of the container after the upper portion has been heated, compressing only the heated upper portion between the first and second reforming tools to eliminate manufacturing imperfections on the upper portion, and having (a) a contact surface configured to contact and reform not more than the upper portion of the container after heating by the heater, and (b) an air gap extending from the contact surface to vent air from between the contact surface and the upper portion of the container;

a chiller coupled to the reforming tools for cooling the contact surface of the reforming tools; and

at least one imprinted or embossed characteristic or at least one transferable element located on the contact surface of the reforming tools,

wherein the reforming tools are configured to transfer the at least one imprinted or embossed characteristic or at least one transferable element to the upper portion of the container when the reforming tools contact the upper portion of the container.

17. The apparatus of claim 16, further comprising a pump for circulating liquid coolant through the reforming tools.

18. The apparatus of claim 16, further comprising a controller controlling the intensity of the heater.

19. The apparatus of claim 16, further comprising a controller controlling the dwell time of the container adjacent to the heater.

20. An apparatus for reforming a portion of a plastic container, comprising:

a previously formed and cooled plastic container having a smaller upper portion and a larger remainder;

a heater for heating only the upper portion of the container to be reformed, while leaving the remainder of the container relatively unheated;

first and second reforming tools spaced apart from the heater, defining a cavity between the first and second reforming tools receiving the upper portion of the container after the upper portion has been heated, compressing only the heated upper portion between the first and second reforming tools to eliminate manufacturing imperfections on the upper portion, and having (a) a contact surface configured to contact and reform not more than the upper portion of the container after heating by the heater, and (b) an air gap extending from the contact surface to vent air from between the contact surface and the upper portion of the container;

a chiller reducing the temperature of a coolant;

a pump circulating the coolant through the chiller and to the reforming tools for cooling the contact surface of the reforming tools;

a control setting a desired coolant temperature; and

at least one imprinted or embossed characteristic or at least one transferable element located on the contact surface of the reforming tools,

wherein the reforming tools are configured to transfer the at least one imprinted or embossed characteristic or at least one transferable element to the upper portion of the container when the reforming tools contact the upper portion of the container.