preform for producing plastic containers, method for producing a preform, and use of an extrusion blow molded preform.

摘要

preform for producing plastic containers, method for producing a preform, and use of an extrusion blow molded preform. A preform (1) produced by extrusion blow molding which aims to produce plastic containers in a stretch blow molding process is described, with a neck portion (4) and a body portion (2) closed by a bottom of the preform (3), the portions of which are separated from each other by a support ring (7) protruding from the outer wall. As a difference from the preforms which are known in the prior art, the preform (1) according to the invention has a body portion (2) from which the outside diameter (a) tapers from the support ring (7) on the direction of the bottom of the preform (3). a method for producing the preform is also proposed.