Claims
- 1. A method for producing a biaxially oriented, open-ended container comprising:
- forming a biaxially oriented intermediate by blow forming, without plug assist, into a forming tube a sheet of unoriented thermoplastic material that is maintained at or near its orientation temperature, wherein the depth of draw of said intermediate is sufficient for full orientation of the sidewalls;
- providing means for preventing said thermoplastic material from sticking to the sides of said forming tube during the blow forming;
- placing said intermediate on a male form of a predetermined size, shape and texture;
- heating said intermediate above the orientation temperature of said thermoplastic material to heat-shrink said intermediate onto the surface of said form to create said container; and
- removing said container from said form.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation of application Ser. No. 07/947,115 filed on Sep. 17, 1992 now abandoned, which is a continuation-in-part of application Ser. No. 07/578,818 filed Sep. 6, 1990 now abandoned which is a continuation-in-part of Ser. No. 07/489,809 filed Mar. 6, 1990 now abandoned, which is a continuation-in-part of Ser. No. 07/320,699 filed Mar. 8, 1989 for "Method and Apparatus for the Manufacture of Shaped Products of Biaxially Oriented Polymeric Material now abandoned."
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Continuations (1)
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Number |
Date |
Country |
Parent |
947115 |
Sep 1992 |
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Continuation in Parts (3)
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Number |
Date |
Country |
Parent |
578818 |
Sep 1990 |
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Parent |
489809 |
Mar 1990 |
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Parent |
320699 |
Mar 1989 |
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