Patent ID: 8440132
Filing Date: 2013-05-14
Classification: B29C,B29D,B29K,B29L,B60K

Abstract:
1. A method for production of a hollow body from thermoplastic plastic, comprising extrusion of at least two sheet preforms of the thermoplastic plastic, introduction of the preforms into a molding die with a molding cavity which at least partially defines a contour of the hollow body to be manufactured, and a shaping of the preforms inside the molding die, using a vacuum and/or gas pressure in a first heat of the thermoplastic material, characterized in that the at least two preforms to be shaped into the hollow body and to be connected are extruded successively in time and are shaped simultaneously; characterized by extruding the at least two preforms from a same die gap; characterized in that the at least two sheet preforms are placed in or introduced into the molding die such that wide sides of the preforms corresponding to one another face away from one another; and characterized in that one of the at least two sheet preforms extruded in succession is rotated through 180° about its longitudinal axis.