Manufacturing composite materials
AssigneeBayer Aktiengesellschaft
InventorsGerd Goldmann, Wolfgang Lindner
Life of this patent
Estimating the term…
Abstract
Process for the manufacture of continuous moulded bodies from structures of reinforcing fibres impregnated with thermoplastic plastics, wherein a structure of reinforcing fibres is passed through a melt of the thermoplastic at a pressure of 1 to 800 bar for a length of at least 300 mm and a device for carrying out the process.
Claims10
A process for the manufacture of continuous moulded bodies from structures of reinforcing fibres impregnated with thermoplastics, comprising the steps of:
- (a) introducing the structure into a pressure chamber;
- and
- (b) impregnating the structure with thermoplastic in the pressure chamber at a pressure of 1 to 800 bar for a length of at least 300 mm.
A process for the manufacture of continuous moulded bodies from structures of reinforcing fibres impregnated with thermoplastics comprising the steps of:
- (a) introducing the structure into a melt chamber;
- (b) drawing the structure from the melt chamber through a gap into a pressure chamber;
- and
- (c) impregnating the structure with thermoplastic in the pressure chamber at a pressure of 1 to 800 bar for a length of at least 300 mm.
An apparatus for manufacturing continuous moulded bodies from structures of reinforcing fibres impregnated with thermoplastics comprising
- a housing defining a pressure chamber into which a thermoplastic melt is introduced, the pressure chamber having a length of at least 300 mm and having at one end of this length an inlet and at an opposite end an outlet, the pressure chamber being maintained at an interior pressure in the range of from 1 to 800 bar;
- a shaping nozzle at the outlet of the pressure chamber;
- and
- a gap between solid walls of the housing at the inlet of the pressure chamber that is sealed by drag flow of the thermoplastic melt
- such that the structure of reinforcing fibres may be introduced into the pressure chamber through the gap at the inlet and impregnated with the thermoplastic melt over the length of the pressure chamber and exit the pressure chamber through the shaping nozzle at the outlet.
Dependencies are inferred from the claim text.