Patent ID: 6793871
Filing Date: 2004-09-21
Classification: B29C,B29L

Abstract:
A method for producing a large-volume, cup-shaped or tub-shaped container of thermoplastic material, the method comprising:extruding a hose-shaped pre-form of compact plastic material to a predetermined length, initially widening the extruded pre-form by a predetermined amount, subsequently moving a core from below into the widened pre-form, subsequently clamping the widened pre-form at a lower free end thereof sealingly against the core, such that an opening of the container is formed, wherein an area of the opening approximately is equal to a cross-sectional area of the container, subsequently shaping the pre-form by means of shaping air into the container, and clamping the pre-form by means of clamping elements at the core so as to form a squeezed rim at the pre-from.