METHOD OF MANUFACTURING PARTS OF THERMOPLASTIC FILM BY DEEP DRAWING Russian patent published in 2018 - IPC B29C51/42 B29C51/46 B29C45/14 B29K69/00 

FIELD: technological processes.

SUBSTANCE: flat film fragment is used on one or both sides. It is either coated, or covered by printing or metallization. The film fragment is placed on a frame. Only the edge portions of the film fragment are placed on the frame. The film fragment is introduced in the heating zone and heated there, so that at least one side of the entire area of the film or the predominant area of the film has a film surface temperature exceeding the Vicat softening temperature V/50 by an amount ranging from 10 to 65°C. This heating is non-contact. Then the heated film fragment is quickly fed into the moulding area, and is treated by a fluid, transferring the pressure, which is under the pressure of more than 20 bar and isostatic moulding is performed to shape a target part, made by deep drawing, over a period of time less than 5 seconds.

EFFECT: exact location of the decorative or functional design.

28 cl, 3 dwg, 2 tbl