Claims
- 1. A blow molding machine for producing a heat set container, said machine comprising:a blow mold defining a mold cavity capable of receiving a preform; a high-pressure fluid source; a high-temperature fluid source; a blow core assembly engagable with the preform and coupled to said high-pressure source and to said high-temperature source to supply high-pressure fluid and high-temperature fluid to an interior portion of the preform, said blow core assembly having an exhaust to exhaust fluid from the interior portion of the preform; and a controller coupled to said high-pressure fluid source and to said high-temperature fluid source to selectively control the supply of high-pressure fluid and high-temperature fluid, said controller further coupled to said exhaust to selectively control the fluid exhaust.
- 2. The blow molding machine of claim 1 wherein said blow core assembly further includes a stretch rod which is movable from a retracted position to an extended position to axially stretch the preform.
- 3. The blow molding machine of claim 2 wherein said stretch rod includes an interior channel coupled to said exhaust.
- 4. The blow molding machine of claim 2 wherein said stretch rod includes an interior channel coupled to at least one of said high-temperature fluid source and said high-pressure fluid source, said stretch rod further including at least one port to supply fluid to the interior portion of the preform.
- 5. The blow molding machine of claim 4, wherein said port is oriented to supply fluid in a direction substantially perpendicular to an interior surface of the preform.
- 6. The blow molding machine of claim 1 wherein said high-pressure fluid source supplies high-pressure fluid at a pressure in the range of 100 psi to 600 psi.
- 7. The blow molding machine of claim 1 wherein said high-temperature fluid source supplies high-temperature fluid at a temperature in the range of 200° C. to 400° C.
- 8. The blow molding machine of claim 1 further comprising a pre-blow fluid source to supply a pre-blow fluid, said blow core assembly being coupled to said pre-blow fluid source to supply the pre-blow fluid to the interior portion of the preform.
- 9. A blow molding machine for producing a heat set container, said machine comprising:a blow mold defining a mold cavity capable of receiving a preform; a high-pressure fluid source; a high-temperature fluid source; a blow core assembly engagable with the preform and coupled to said high-pressure source and to said high-temperature source to supply high-pressure fluid and high-temperature fluid to an interior portion of the preform, said blow core assembly having an exhaust to exhaust fluid from the interior portion of the preform and a stretch rod which is movable from a retracted position to an extended position to axially stretch the preform; and a controller coupled to said high-pressure fluid source and to said high-temperature fluid source to selectively control the supply of high-pressure fluid and high-temperature fluid, said controller further coupled to said exhaust to selectively control the fluid exhaust.
- 10. The blow molding machine of claim 9 wherein said stretch rod includes an interior channel coupled to said exhaust.
- 11. The blow molding machine of claim 9 wherein said stretch rod includes an interior channel coupled to at least one of said high-temperature fluid source and said high-pressure fluid source, said stretch rod further including at least one port to supply fluid to the interior portion of the preform.
- 12. The blow molding machine of claim 11 wherein said port is oriented to supply fluid in a direction substantially perpendicular to an interior surface of the preform.
- 13. The blow molding machine of claim 9 wherein said high-pressure fluid source supplies high-pressure fluid at a pressure in the range of 100 psi to 600 psi.
- 14. The blow molding machine of claim 9 wherein said high-temperature fluid source supplies high-temperature fluid at a temperature in the range of 200° C. to 400° C.
- 15. The blow molding machine of claim 9 further comprising a pre-blow fluid source to supply a pre-blow fluid, said blow core assembly being coupled to said pre-blow fluid source to supply the pre-blow fluid to the interior portion of the preform.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a divisional of U.S. patent application Ser. No. 09/395,708 filed on Sep. 14, 1999, now U.S. Pat. No. 6,485,669 issued on Nov. 26, 2002.
US Referenced Citations (14)
Foreign Referenced Citations (1)
Number |
Date |
Country |
WO 9630190 |
Oct 1996 |
WO |
Non-Patent Literature Citations (3)
Entry |
The Crystallization of Oriented Poly(ethyleneterephthalate), F.S. Smith and R.D. Steward, Cl Fibres, Hookstone Road, Harrogate, Yorkshire HG2 8QN, UK, Received May 15, 1973; revised Jun. 26, 1973. |
The Crystallization of Poly(ethyleneterephthalate) and Related Copolymers, J.B. Jackson and F.W. Longman, Paper Presented at the SPE 27th Annual Technical Conference, Chicago, May 1969. |
Crystallization and Thermal Stabilization of Heat Set PET, S.A. Jabarin, accepted for publication in the Polmeric Materials Encyclopedia. |