The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2010
Filed:
Dec. 30, 2003
Gabriele Binda, Malgesso, IT;
Francesco Fiorentini, Milan, IT;
Davide Mariani, Saronno, IT;
Loredano Sbrana, Varese, IT;
Carlo Ortenzi, Milan, IT;
Gabriele Binda, Malgesso, IT;
Francesco Fiorentini, Milan, IT;
Davide Mariani, Saronno, IT;
Loredano Sbrana, Varese, IT;
Carlo Ortenzi, Milan, IT;
Canon S.p.A., Trezzano sul Naviglio (MI), IT;
Abstract
A method and a plant for twin-sheet thermoforming of fuel tanks; first and second sheets (SA, SB) of thermoformable plastic material, are separately fed along respective processing lines (A,B). The sheets (SA, SB) are heated and gripped along their peripheral edges by a pneumatically actuate suction and vacuum holding device (A,B), for supporting the heated sheets (SA, SB) in a substantially flat condition while they are moved towards a respective thermoforming station (A,B). Both the molds (A,B) are disposed side by side with their open cavity facing upwards. After thermoforming of the plastic sheets (SA, SB), one of the molds (B) is turned upside down onto the other mold (A), to overlap and weld superimposed sealing areas of the two thermoformed shells (GA, GB). Cooling of the molds and thermoformed tank may be performed on a side of the processing lines (A,B).