Patents Assigned to DAETWYLER SWISSTEC AG
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Patent number: 10953649Abstract: A doctor blade (100), in particular for doctoring off printing ink from an impression cylinder, comprises a doctor blade body (110) with a working edge (130) and a first doctor blade side (122) which faces the impression cylinder, in particular, during operation, and a second doctor blade side (121) which faces away from the impression cylinder, in particular, during operation. The doctor blade body (110) is provided with a coating (150) which comprises a polymer, wherein the coating (150) comprises particles (160) at least in one part region. The particles (160) are configured as hard material particles (160), and a mass proportion of the hard material particles (160) in the coating (150) on the first doctor blade side (122) is higher than a mass proportion of the hard material particles (160) in the coating (150) on the second doctor blade side (121).Type: GrantFiled: December 9, 2016Date of Patent: March 23, 2021Assignee: DAETWYLER SWISSTEC AGInventors: Hans Jörg Brudermann, Michael Reinert
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Publication number: 20180319154Abstract: A doctor blade (100), in particular for doctoring off printing ink from an impression cylinder, comprises a doctor blade body (110) with a working edge (130) and a first doctor blade side (122) which faces the impression cylinder, in particular, during operation, and a second doctor blade side (121) which faces away from the impression cylinder, in particular, during operation. The doctor blade body (110) is provided with a coating (150) which comprises a polymer, wherein the coating (150) comprises particles (160) at least in one part region. The particles (160) are configured as hard material particles (160), and a mass proportion of the hard material particles (160) in the coating (150) on the first doctor blade side (122) is higher than a mass proportion of the hard material particles (160) in the coating (150) on the second doctor blade side (121).Type: ApplicationFiled: December 9, 2016Publication date: November 8, 2018Applicant: DAETWYLER SWISSTEC AGInventors: Hans Jörg BRUDERMANN, Michael REINERT
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Patent number: 9132687Abstract: A doctor blade for scraping printing ink from a surface of a printing plate, comprising a flat and elongated main body having a working edge area formed in a longitudinal direction, the working edge area being coated with at least one first coating on the basis of a nickel-phosphorus alloy, and is characterized in that the first coating contains at least one additional component for improving the wear behavior of the doctor blade.Type: GrantFiled: January 20, 2010Date of Patent: September 15, 2015Assignee: Daetwyler SwissTec AGInventors: Hans Jörg Brudermann, Sibylle Stiltz, Andreas Hügli
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Patent number: 8635755Abstract: A method for producing doctor blades from metal, in particular from steel, the doctor blades to be produced having a reduced material thickness in a region of a working edge. The material thickness is essentially constant in the region of reduced material thickness. By a planing operation being used upon a basic body with an essentially constant material thickness, the region of reduced material thickness is generated. By the region of reduced material thickness being generated by means of a planing operation, an efficient and cost-effective method for the production of doctor blades is achieved.Type: GrantFiled: April 13, 2010Date of Patent: January 28, 2014Assignee: Daetwyler Swisstec AGInventors: Hans Jörg Brudermann, Peter Daetwyler
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Publication number: 20130014656Abstract: A doctor blade for scraping printing ink from a surface of a printing plate, comprising a flat and elongated main body having a working edge area formed in a longitudinal direction, the working edge area being coated with at least one first coating on the basis of a nickel-phosphorus alloy, and is characterized in that the first coating contains at least one additional component for improving the wear behavior of the doctor blade.Type: ApplicationFiled: January 20, 2010Publication date: January 17, 2013Applicant: DAETWYLER SWISSTEC AGInventors: Hans Jörg Brudermann, Sibylle Stiltz, Andreas Hügli
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Publication number: 20110247512Abstract: A method for producing doctor blades from metal, in particular from steel, the doctor blades to be produced having a reduced material thickness in a region of a working edge. The material thickness is essentially constant in the region of reduced material thickness. By a planing operation being used upon a basic body with an essentially constant material thickness, the region of reduced material thickness is generated. By the region of reduced material thickness being generated by means of a planing operation, an efficient and cost-effective method for the production of doctor blades is achieved.Type: ApplicationFiled: April 13, 2010Publication date: October 13, 2011Applicant: DAETWYLER SWISSTEC AGInventors: Hans Jörg Brudermann, Peter Daetwyler
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Publication number: 20110226144Abstract: A doctor blade for wiping printing ink off a surface of a printing plate and/or for use as a paper doctor knife, has a flat and elongated main body including a working edge region configured in a longitudinal direction, wherein at least the working edge region is covered with a first coating on the basis of a nickel-phosphorus alloy. The doctor blade is characterized in that monocrystalline and/or polycrystalline diamond particles are dispersed in the first coating, wherein a particle sizes of the diamond particles measure at least 5 nm and less than 50 nm.Type: ApplicationFiled: September 10, 2009Publication date: September 22, 2011Applicant: DAETWYLER SWISSTEC AGInventors: Hans Jörg Brudermann, Sibylle Stiltz, Andreas Hugli
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Publication number: 20110219971Abstract: A doctor blade for wiping printing ink off a surface of a printing plate, comprising a flat and elongated main body having a working edge region configured in a longitudinal direction, the working edge region being covered with a first coating on the basis of a nickel-phosphorus alloy applied by electroless deposition, and hard material particles being dispersed in the first coating, characterized in that the first coating is covered with a second coating on the basis of galvanically deposited nickel.Type: ApplicationFiled: August 27, 2009Publication date: September 15, 2011Applicant: DAETWYLER SWISSTEC AGInventors: Hans Jörg Brudermann, Sibylle Stiltz, Andreas Hugli
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Publication number: 20090308270Abstract: A doctor blade, in particular for metering of inks and coatings from an engraved surface, has a flat oblong base body and a blade region with a working edge being formed at one of the longitudinal sides of the base body. The blade region is at least partially made of a plastics material, whereas the working edge is formed of the plastics material. The base body is made from a reinforced plastics material. The opposing main outer surfaces of the base body are constituted by plastic layers made from a first material, where at least one inner layer made from a second material having a higher rigidity than the first material is provided in between the plastic layers.Type: ApplicationFiled: August 29, 2006Publication date: December 17, 2009Applicant: DAETWYLER SWISSTEC AGInventors: Marty L. Cansler, Daniel P. Cedrone