|Patent application number
|APPARATUS FOR MACHINING A WORKPIECE - An apparatus for machining a strip- or plate-shaped metallic workpiece is proposed, in particular for the deburring of cut edges and/or for the grinding of surfaces of the workpiece, having at least one machining unit which has a revolving drive device which directs a machining element at least approximately linearly past the region of the workpiece to be machined obliquely or transversely to the feed direction of the workpiece. According to the invention, the machining element is designed as a grinding belt, the grinding belt, in the region of the workpiece to be machined, being in operative connection with the drive device in such a way that the drive device drives the grinding belt, and the grinding belt and the drive device are separate from one another at least in a region remote from the workpiece.
|Device for Machining a Strip or Plate-Shaped Metal Workpiece - The invention relates to a device for machining a strip or plate-shaped metal workpiece, which comprises at least one conveying device which is provided with machining elements. The conveying device guides the machining elements at an angle and/or in a transversal manner in relation to the direction of advancement of the workpiece in the region of the workpiece which is to be machined in an at least approximately linear manner. The machining elements are embodied as abrasive paper and support elements are arranged between said abrasive paper.
|MACHINING STATION AND APPARATUS FOR MACHINING A WORKPIECE - An apparatus for machining a planar metal workpiece, having at least one machining unit, with which a machining belt, which is driven in circulation, can be guided in an at least approximately linear manner past the region of the workpiece to be machined in an oblique or transverse manner with respect to a feed direction of the workpiece. A movable carrier element having pressure means acts on a rear side of the machining belt in order to influence contact, necessary for machining, between the working side of the machining belt and the workpiece. A drive arrangement, by way of which the carrier element can be motor-driven, is provided such that the carrier element moves substantially parallel to the direction of movement of the machining belt, at least in the working region of the machining belt.
|Patent application number
|Hotmelt process for producing a chemically crosslinked polyurethane film - Process for producing a chemically crosslinked polyurethane film, comprising the following substeps:
|PRESSURE-SENSITIVE ADHESIVE FROM A RESIN-MODIFIED POLYURETHENE - Pressure-sensitive adhesive based on a mixture of chemically crosslinked polyurethane and at least one hydrocarbon resin, the chemically crosslinked polyurethane being a reaction product of at least one aliphatic or alicyclic polyisocyanate and a combination of at least one polypropylene glycol diol and one polypropylene glycol triol, reacted with one another catalytically in the presence of the at least one hydrocarbon resin, the at least one hydrocarbon resin being a monomer resin of the styrene/α-methylstyrene type.
|POLYURETHANE-BASED PRESSURE-SENSITIVE ADHESIVE - Polyurethane-based pressure-sensitive adhesive wherein the polyurethane comprises the chemical reaction product of at least the following starting materials:
|Hydroxyl-Functionalised Polyurethane Hot Melt Prepolymer - The invention relates to hydroxyl-functionalised polyurethane hot melt prepolymers comprising the chemical reaction product of isocyanate-reactive starting materials with at least one isocyanate-containing starting material. Said prepolymers are characterised in that the isocyanate-reactive starting materials of the hydroxyl-functionalised polyurethane hot melt prepolymers have a polypropylene glycol with a functionality higher than two and a number-average molar mass higher than or equal to 3,000 g/mol, a polypropylene glycol with a functionality less than or equal to two and a number-average molar mass less than or equal to 1,000 g/mol, and a chain lengthener with a functionality less than or equal to 500 g/mol, and the isocyanate-containing starting material of the hydroxyl-functionalised polyurethane hot melt prepolymer has an aliphatic or alicyclic diisocyanate.
|Pressure-Sensitive Adhesive Mass - The present invention relates to a pressure-sensitive adhesive mass based on polyurethane, wherein the polyurethane is composed of the following starting materials in the specified proportions, said starting materials being reacted catalytically with each other: a) at least one aliphatic or alicyclic polyisocyanate, wherein the functionality thereof is less than or equal to 3 in each case; b) a combination of at least one polypropylene glycol diol and at least one polypropylene glycol triol, wherein the ratio of the number of hydroxyl groups of the diol component to the number of hydroxyl groups of the triol component is less than 10, wherein the ratio of the number of isocyanate groups to the total number of hydroxyl groups is between 0.65 and 1.2, and wherein the diols and triols are selected and combined alternatively as follows in each case: diols having a molecular weight of less than or equal to 1000 are combined with triols having a molecular weight greater than or equal to 1000, diols having a molecular weight of great than 1000 are combined with triols having a molecular weight less than 1000; (c) at least one light stabilizer based on an aromatically substituted triazine having a proportion of 0.2-2 wt % and at least one amine-hindered light stabilizer having a proportion of 0.2-2 wt %; d) at least one antioxidant based on a sterically hindered phenol having a proportion of 0.2-2 wt %; e) a carbodiimide having a proportion of 0.25-2.5 wt %.
|PRIMER FOR IMPROVING THE ADHESION OF ADHESIVE TAPES ON PLASTICS AND METALS WHICH ARE DIFFICULT TO BOND - Primer comprising a mixture, dissolved or dispersed in one or more solvents, of I) a pressure sensitive adhesive obtained by copolymerization of a) at least one acrylic ester of a linear primary alcohol, b) at least on acrylic ester of a branched, acyclic alcohol, and d) acrylic acid, II) at least one thermal crosslinker, and III) at least one chlorinated polyolefin.
|DOUBLE-SIDED ADHESIVE TAPE COMPRISING A FIRST OUTER, PRESSURE-SENSITIVE ADHESIVE SIDE, AND A SECOND OUTER SIDE WHICH CAN BE THERMALLY-ACTIVATED - The invention relates to a double-sided adhesive tape having a first outer, pressure-sensitive adhesive side and a second outer, thermally-activatable side, and that comprises an at least dual-layered product construction consisting of layers A and B, layer A being a pressure-sensitive adhesive layer that is chemically cross-linked by thermal initiation, or being a pressure-sensitively adhesive carrier layer chemically cross-linked by thermal initiation, layer B being a thermoplastic synthetic material-based layer, layers A and B being in direct contact with one another, and the surface of layer A, which is in direct contact with layer B, having been corona or plasma pre-treated. The corona or plasma pre-treatment takes place in an atmosphere of nitrogen, carbon dioxide or a noble gas, or a mixture of at least two of these gases. The inventive adhesive tape is useful for adhesively bonding articles composed of thermoplastic polymer, of EPDM, or of another rubberlike material.
|METHOD FOR INCREASING THE ADHESIVE POWER OF A PRESSURE-SENSITIVE ADHESIVE LAYER HAVING AN UPPER AND A LOWER SURFACE - Method for increasing the adhesive power of a pressure-sensitive adhesive layer having an upper and a lower surface, wherein at least one surface of the pressure-sensitive adhesive layer is subjected to a physical process, said physical process being selected from among the group comprising corona discharge, dielectric barrier discharge, preliminary flame treatment, or plasma treatment.
|ADHESIVE TAPE, PREFERABLY SELF-ADHESIVE TAPE, COMPRISING OF AT LEAST TWO LAYERS A AND B LAMINATED DIRECTLY ON ONE ANOTHER, WITH AT LEAST ONE OR BOTH LAYERS A OR B BEING AN ADHESIVE - Adhesive tape having at least two layers A and B laminated directly on one another, with at least one or both layers A or B being an adhesive, and the interfaces of the layers A and B laminated on one another being subjected to a physical method, the physical method being selected from the group consisting of corona discharge, dielectric barrier discharge, flame pretreatment and plasma treatment, before the layers are laminated to one another, with the two methods differing from one another.
|DOUBLE-SIDED ADHESIVE TAPE HAVING A FIRST OUTER IMPACT-ADHESIVE SIDE AND A SECOND OUTER SIDE THAT CAN BE HEAT ACTIVATED - The invention relates to a double-sided adhesive tape having a first outer impact-adhesive side and a second outer side that can be heat activated, comprising an at least two-layer product structure comprising the layers A and B. Layer A is an impact-adhesive layer chemically cross-linked by means of thermal initiation or an impact-adhesive carrier layer chemically cross-linked by means of thermal initiation. Layer B is a layer on the basis of a thermoplastic plastic. Layer A and layer B are in direct contact with each other, and the surface of layer B that is in direct contact with layer A has been corona- or plasma-pretreated. The double-sided adhesive tape is characterized in that the corona or plasma pretreatment is performed in an atmosphere comprising nitrogen, carbon dioxide, or a noble gas or a mixture of at least two of said gases.
|Patent application number
|Operating Method for a Grinding Body Mill and Grinding Body Mill for the Same - An operating method for a grinding body mill having a housing which surrounds a grinding chamber in which grinding bodies are arranged and, during normal operation, are set in motion for the purpose of grinding a grinding stock to be ground, which housing includes a product inlet and a product outlet, between which the grinding stock to be ground flows through the moving grinding bodies, wherein, by means of a separating device positioned upstream of the product outlet, grinding bodies are prevented from exiting the grinding chamber into the product outlet during normal operation of the grinding body mill, and wherein furthermore, grinding bodies that have passed through the separating device and onward through the product outlet pass into an upwardly inclined discharge pipe from where, when the grinding body mill is at a standstill, the grinding bodies are directed out of the discharge pipe through the product outlet into a rotor body of the separating device and, when operation of the grinding body mill is resumed, the grinding bodies are conveyed back into the grinding chamber owing to the rotation of the rotor body. The invention also relates to a grinding body mill of the type for carrying out the method.
|Machine Having a Cantilever-Mounted Rotor - Machine having a rotor which is mounted in a cantilevered fashion on a bearing and has a rotational axis along which a free, subsequently non-mounted rotor end runs starting from the bearing, the rotor end having a rotor end side which is spaced apart from a fixed rotor opposing side by a gap, and which, during operation of the machine when the rotor is rotating, is deflected with respect to the rotational axis as a result of imbalance of the free, non-mounted rotor end, or as a result of externally applied forces, wherein the rotor end side is curved or beveled so as to drop away at least in its end region towards its edge and in a direction towards the bearing.
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|CONTACT PIECE CONTAINING PRECIOUS METAL ON A SPRING SUPPORT HAVING A ROTATIONALLY SYMMETRICAL BENDING MOMENT - A spring contact for a sliding contact is provided having a terminal region and at least one contact region including an elongated spring element and a precious metal. The spring contact includes a conductive spring support and at least one contact piece. The spring support has essentially symmetrical rigidity in some regions in a plane perpendicular to the elongated extension of the spring support, and is made of a conductive material essentially free of precious metal. The contact piece(s) is/are conductively connected to the spring support, and has at least one surface to form the sliding contact. A surface of the contact piece(s) is made of a precious metal or a precious metal alloy. A slip ring transmitter for a motor or dynamo is also provided having a spring contact of this type, wherein the surface of the contact piece(s) touch(es) against the slip ring(s) in a conductive manner.
|WIRE FOR SLIDING CONTACTS, AND SLIDING CONTACTS - A wire is provided for producing a sliding contact, wherein at least an inner core of the wire consists of a copper-silver alloy. A sliding contact is also provided having at least one such wire, wherein a counter-contact is provided whose conductive surface has at least one of the wires touch against it. The spring force of the wire acting on the conductive surface of the counter-contact effects electrical contacting between the wire and the counter-contact and the counter-contact is mobile with respect to the wire, such that the surface of the wire slides over the counter-contact when the counter-contact moves. Components having the sliding contact are also provided, including a potentiometric sensor, potentiometer, sliding dolly regulator, position sensor, rotary switch, electrical motor, generator, wind turbine, slip ring system, actuator, or current collector.