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:
Aug. 12, 2014
Filed:
Apr. 15, 2009
Kenji Nozawa, Numazu, JP;
Masatsugu Tamura, Numazu, JP;
Kenji Nozawa, Numazu, JP;
Masatsugu Tamura, Numazu, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a sheet forming die capable of finely controlling the flow rates of the respective divided flows of a molten resin with precision. The sheet forming die is a sheet forming dieconfigured to: receive a first molten resin B; to receive a second molten resin A; and to thus form a sheet-shaped resin-made product by discharging the molten resins A, B from a lip gap. The sheet forming dieincludes: a first passageprovided to flow the supplied first molten resin B up to an upstream end of a lip partlocated upstream of the lip gap; a second passageprovided to flow the supplied second molten resin A up to the lip part, the second passage branching out into a plurality of passagewaysA,B in a midstream portion thereof, downstream ends of these passagewaysA,B being connected to portions in an upstream end of the lip part, respectively; and temperature controllerconfigured to locally control a temperature of a midstream portion of at least one of the passagewaysA,B in order to control a flow rate of the second molten resin A in the passagewaysA,B.