摘要:
A silicone protective coating for an electronic light source and a method for applying the coating over an exposed or outer surface of the electronic light source assembled as part of or mounted to a circuit board or other substrate.
摘要:
Die Erfindung betrifft eine elektrische Baugruppe, wobei die Baugruppe (1) eine Leiterplatte (5) und auf der Leiterplatte (5) angeordnete elektrische Bauelemente (2,3a,3b) aufweist, wobei die Leiterplatte (5) elektrisch leitende Leiterbahnen (4a,4b) aufweist, die die Bauelemente (2,3a,3b) elektrisch miteinander verbinden, wobei mindestens ein Bauelement (2,3a) eine Beschichtung (15a,15b) mit einem Lack aufweist, wobei der Lack magnetisch leitende Partikel (15) enthält. Weiterhin betrifft die Erfindung ein Verfahren zur Herstellung einer solchen elektrischen Baugruppe (1). Die Erfindung ermöglicht auf ein Bauelement (2,3a,3b) einer elektrischen Baugruppe (1) einwirkende magnetische Felder und/oder von dem Bauelement (2,3a,3b) erzeugte magnetische Felder zu reduzieren.
摘要:
Circuit carrier having a metal support layer, at least some portions of which are covered by a dielectric layer, the latter having a plurality of pores, with the pores being sealed by glass at least on the opposite side of the dielectric layer to the support layer.
摘要:
A surface metal film material including, in this order, a substrate, a polymer layer that receives a plating catalyst or a precursor thereof, and a metal film formed by plating, wherein, when x µm represents surface roughness (Ra) at an interface between the substrate and the polymer layer, and y µm represents surface roughness (Ra) at an interface between the polymer layer and the metal film, x > y and 5 µm > x > 0.1 µm.
摘要:
A method of forming a flexible conductive strip includes : molding a continuous, flexible (14) base of an electrically insulating thermoplastic resin, while forming channels (34) in a surface of the base; at least partially- filling the formed channels with a flowable, electrically conductive composition; and then stabilizing the flowable composition in the channels to form a pattern of stable, electrically conductive traces (16) within the channels . A method of forming a flexible circuit board having loop-engageable touch fastener elements (38) includes: molding a continuous, flexible base from an electrically insulating thermoplastic resin, while forming a field of stems integrally molded with and extending from a first side of the base,- applying a conductive material to the base to form a pattern of electrically conductive traces in accordance with a circuit design; and forming loop-engageable heads on the stems .
摘要:
ABSTRACT A plate-like workpiece to be coated (100) is suspended, positioned and conveyed between a pair of nozzle units (4,4) arranged opposing each other in an application space 3 inside an application booth (2). A coating agent (A) is sprayed from a plurality of spray nozzles (5) arranged on each nozzle unit (4) in a row at regular intervals so as to coat both the front and rear application surfaces (100a) and (100b) of the plate-like workpiece to be coated (100) while the plate-like workpiece to be coated (100) is being moved in a direction (X) perpendicular to the direction in which individual spray nozzles 5 are arrayed. With this arrangement it is possible to provide a coating machine for electric or electronic circuit boards, which has a simple mechanism and configuration and is reduced in size and installation space with improved productivity and economy, as well as providing a coating method using the machine and an electric or electronic circuit board coated by the method.
摘要:
Apparatus and methods for spray coating selected areas of a circuit board with a liquid coating material without coating regions of the circuit board to be left uncoated. In one mode of operation, a bead of liquid coating material dispensed from an elongated nozzle tip is atomized by directing jets of air pressurized against the bead to form a conical, swirling spray pattern which is sprayed on selected areas of a circuit board. In a second mode of operation, the non-atomized bead of liquid coating material dispensed through the elongated nozzle tip is applied on selected areas of the circuit board. In a third mode of operation, jets of pressurized air are directed against the bead of liquid coating material to create a soft swirl pattern, without atomizing the bead of coating material.
摘要:
A process for coating printed circuit boards by means of coating rolls with a coating which may be cross-linked by electromagnetic radiation, preferably UV radiation, is characterised by the following steps: a photopolymerisable, fusible, low-molecular coating which is highly visquous to solid at room temperature and has a mean molecular weight preferably from 500 to 1500 is melted and supplied to the applicator roll (1) of a roll coating installation; the coating is applied on the printed circuit board surface(s) at a temperature from 60 °C to 110 °C with approximately 1000 to 20 000 mPas viscosity and 10-200 νm thick; the surface to be coated of the printed circuit board (L) is preheated (8) before coating up to a temperature 10 °C to 50 °C higher than the temperature at which the coating is applied. A device (10) for carrying out this process is also disclosed.