US 7,320,586 B2
Container blowing device
Savino Storione, Versoix (Switzerland); and Daniel Jover, Prangins (Switzerland)
Assigned to Technoplan Engineering S.A., Plan-Les-Ouates (Switzerland)
Appl. No. 10/483,646
PCT Filed Jul. 18, 2002, PCT No. PCT/IB02/02845
§ 371(c)(1), (2), (4) Date Jan. 13, 2004,
PCT Pub. No. WO03/009993, PCT Pub. Date Feb. 06, 2003.
Claims priority of application No. 01 09744 (FR), filed on Jul. 20, 2001.
Prior Publication US 2004/0173949 A1, Sep. 09, 2004
Int. Cl. B29C 49/58 (2006.01)
U.S. Cl. 425—535 6 Claims
OG exemplary drawing
 
1. A device for blowing packaging, particularly bottles from a preform using a gas and for recovering said gas, comprising at least means for supplying the device with gas at a first pressure and at a second pressure, means for stretching and means for forming the packaging, characterized in that it comprises recovery means for recovering said gas until a third predetermined pressure is reached in the packaging, said recovery means comprising at least one recovery volume and one recovery valve, control means for controlling said recovery means and adjusting means to adjust the operation of said control means;
wherein the recovery means is configured to expand residual gas within the packaging to open air while recovering said gas, both before and after the third predetermined pressure is reached in the packaging.