A container (21), and a method and apparatus for producing the container from a tubular blank of polyethylene terephthalate or similar material, according to which a polyethylene terephthalate blank is stretched at least about 3-fold to produce a preform (20). In an axial section through the preform,...http://www.google.co.uk/patents/US4467929?utm_source=gb-gplus-sharePatent US4467929 - Oriented plastic container
