Invention Grant
- Patent Title: Dewatering screen and method for the production thereof
- Patent Title (中): 脱水筛网及其生产方法
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Application No.: US12517848Application Date: 2007-12-05
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Publication No.: US08349132B2Publication Date: 2013-01-08
- Inventor: Andre Gregarek , Andreas Hanelt , Bernhard Wiedner , Theodor Burchard , Andreas Aigner , Gunther Wild
- Applicant: Andre Gregarek , Andreas Hanelt , Bernhard Wiedner , Theodor Burchard , Andreas Aigner , Gunther Wild
- Applicant Address: DE Munich
- Assignee: Giesecke & Devrient GmbH
- Current Assignee: Giesecke & Devrient GmbH
- Current Assignee Address: DE Munich
- Agency: Greenlee Sullivan P.C.
- Priority: DE102006058513 20061212
- International Application: PCT/EP2007/010547 WO 20071205
- International Announcement: WO2008/071325 WO 20080619
- Main IPC: B44F1/12
- IPC: B44F1/12
Abstract:
The present invention relates to a dewatering screen for manufacturing paper having multi-level watermarks, having a carrier mold (54) that exhibits, in a fractional region, a multi-level relief (30) in the form of the watermark to be produced. According to the present invention, it is provided that the multi-level relief is formed by an injection-molded, perforated (40) watermark insert (30).
Public/Granted literature
- US20100175843A1 DEWATERING SCREEN AND METHOD FOR THE PRODUCTION THEREOF Public/Granted day:2010-07-15
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