PLASTIC FORMULATION AND METHOD FOR THE PRODUCTION OF PLASTIC BOTTLES IN A TWO-STAGE STRETCH BLOW-MOLDING PROCESS

摘要

1. Plastic formulation for producing plastic bottles in a two-station stretch blow-molding process, in which first of all in an injection molding process or in a flow molding process a preform is produced from the plastic formulation and a plastic bottle is produced from the preform in a stretch blow-molding process in a second process step which is separate in time and/or space, the preform being axially and radially stretched, characterized in that the plastic formulation has at least 60%HDPE (high density polyethylene) of a density from 0.941 g/cm3 to 0.965 g/cm3 and with a first melt index 190°C/2.16 kg from 0.1 to 0.9 g/10 min according to ISO 1133, the HDPE comprising a monomodal or multimodal HDPE with a second melt index 190°C/21.6 kg from 5 g/10 min to 50 g/10 min according to ISO 1133.