A PARISON WHOSE NECK IS BASED ON AN AROMATIC POLYESTER, AND IN PARTICULAR ON PET, THE NECK INCLUDING A THREAD HAVING A PROFILE IN LONGITUDINAL SECTION THAT IS ASYMMETRICAL

摘要

The parison (1) is made from one or more thermoplastic resins, and includes a neck (2) based on an aromatic polyester and preferably based on PET, which neck is provided with a thread and is not thermally stabilized. According to the invention, the thread has a profile in longitudinal section that is asymmetrical, making it possible to obtain a thread whose profile in longitudinal section is of improved symmetry after the neck (2) has been thermally stabilized. The invention also provides a receptacle, and in particular a bottle, obtained by stretching and blowing a parison, and in which at least the neck (2) has been thermally stabilized, and has preferably been completely crystallized.