Abstract:
A system and corresponding method for additive manufacturing of a three- dimensional (3D) object to improve packing density of a powder bed used in the manufacturing process. The system and corresponding method enable higher density packing of the powder. Such higher density packing leads to better mechanical interlocking of particles, leading to lower sintering temperatures and reduced deformation of the 3D object during sintering. An embodiment of the system comprises means for adjusting a volume of a powder metered onto a top surface of the powder bed to produce an adjusted metered volume and means for spreading the adjusted metered volume to produce a smooth volume for forming a smooth layer of the powder with controlled packing density across the top surface of the powder bed. The controlled packing density enables uniform shrinkage, without warping, of the 3D object during sintering to produce higher quality 3D printed objects.
Abstract:
Es wird ein Verfahren zur Herstellung einer Mehrlagenleiterplatte (1) mit Sacklöchern (2) zur elektrischen Anbindung von Innenlagen (4) genannt, wobei Sacklöcher (2) mit insbesondere kleinem Durchmesser hergestellt werden und die Sacklöcher ohne vorhergehende chemische bzw. elektrochemische Metallisierung mit elektrisch leitfähigem Material (9) gefüllt werden und Durchkontaktierungslöcher (3) hergestellt werden und die Durchkontaktierungslöcher (3) und die Oberflächen der Mehrlagenleiterplatte (7) in einer Galvanikanlage mit Kupfer (8) beschichtet werden. Weiter wird eine derart hergestellte Mehrlagenleiterplatte genannt und die Anwendung zur Verwendung als Träger bzw. Verdrahtungselement für Bauelemente und eine Anlage zur Durchführung des Verfahrens genannt.
Abstract:
The present invention provides an article of manufacture using an electrophotographic printer to produce printed electronic circuits by printing a second conductive powder layer and a first thermoplastic layer. The second conductive powder layer is permanently fixed to the first layer before removing conductive powder from portions of the substrate other than that coated with the thermoplastic patterned image.
Abstract:
A circuit assembly (34) resistant to high-temperature and high g centrifugal force is disclosed. A printed circuit board (42) is first fabricated from alumina and has conductive traces of said circuit formed thereon by the use of a thick film gold paste. Active and passive components of the circuit assembly are attached to the printed circuit board by means of gold powder diffused under high temperature. Gold wire is used for bonding between the circuit traces and the active components in order to complete the circuit assembly (34). Also, a method for manufacturing a circuit assembly resistant to elevated temperature is disclosed
Abstract:
The invention relates to a kit for preparing a conductive element comprising -a container A containing a liquid dispersion A’, comprising dispersed nanoparticles having a metallic surface and a ligand capable of binding to said surface; -a container B - which may be the same or different as the container A containing the liquid dispersion A’- said container B containing a liquid B’ comprising reducible silver ions or other reducible metal ions; and -a further container C containing a liquid C’ comprising a reducing agent for the metal ions of the liquid from container B.
Abstract:
In general the disclosure relates to manufacturing methods for producing conductive patterns on flexible substrates. For example, a layer of a metal powder composition is deposited onto an adhesive overlaying a substrate. Pressure is applied to the metal powder composition on the adhesive coated substrate web by a die having one or more projections, in order to reproduce a pattern on the substrate. The metal powder is compressed by the projections of the die, thereby densifying the powder and causing it to adhere to the adhesive in a reproduction of the die pattern. The metal powder does not adhere substantially in uncompressed regions, and may be removed. In this manner, a metal powder composition may be densified and adhered to a substrate forming a web of flexible circuit elements, for example, circuit elements such as antennas, resistors, capacitors, inductive coils, conduction pads and the like.