BLOWN FILM EXTRUSION DEVICE

摘要

The invention describes a blown film extrusion device with a blow head (20) and an outer cooling ring (10) mountable on its top (21), which has an annular support surface (11) on its bottom and can be centered relative to blow head (10) via centering devices. The centering devices are formed by at least three radially arranged linear guides, each of which has a radially extending recess (12.1, ..., 12.4) and at least one guide element (22.1, ..., 22.4) engaging in it.