摘要 |
A method for producing open-ended biaxially oriented containers includes forming a biaxially oriented intermediate by blow forming, without plug assist, a sheet of unoriented thermoplastic material into a forming tube to a depth of draw sufficient for full orientation of the side walls. During blow forming the thermoplastic material is prevented from sticking to the side walls of the forming tube. The blow formed intermediate is placed on a male form a predetermined size, shape and texture. The intermediate is heated above the orientation temperature of the thermoplastic material to heat shrink the intermediate onto the surface of the male form. The formed container is then removed from the male form.
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