Title:
Fallstudie 2: Technische und ökonomische Potentiale neuer Substratmaterialien
Authors:
Dr. Jan Kostelnik, Würth Elektronik GmbH & Co. KG, Rot am See
Abstract:
Considering the fact of economical, ecological and technical requirements in an environmental benign context, the presentation provides information on the construction possibilities of environmental sound PCBs.
The technical trend of conventional PCBs is described and standards are explained. Furthermore Mr. Kostelnik gave divers examples for eco-designed PCBs and future possibilities.
One of the outstanding examples of environmentally benign concepts for PCBs is TWINflex:
TWINFlex is a printed circuit board in MicroVia technology using foil technology with flexible materials, such as polyimide. The board is flexible in form and function: suitable for high density flexible, flex-rigid and three dimensional circuits.
PCBs in general severe two basic functions, namely the electrical circuits and mechanical functions. In a conventional PCB both functions are very closely linked to each other. The TWINFlex concept, already developed in the 1990s, separates mechanical and electrical functions. The circuits are part of a flex foil. The foil circuit board can be mounted on a homogenous plastic or metal substrate. Thus, the PCB is not one composite material anymore, but high metal content circuits and the monomaterial substrate can be easily separated from each other at end-of-life. Within the circuits part especially the expensive materials, namely noble metals are concentrated. This concept can re-duce recycling costs and increase benefits from concentrated secondary material. Having the WEEE directive in mind, which makes the producer pay for recycling, this concept might directly save money. Also the use of harmful substances during the production-phase can be limited by TWINflex® drastically.
Fallstudie 2: Technische und ökonomische Potentiale neuer Substratmaterialien
Authors:
Dr. Jan Kostelnik, Würth Elektronik GmbH & Co. KG, Rot am See
Abstract:
Considering the fact of economical, ecological and technical requirements in an environmental benign context, the presentation provides information on the construction possibilities of environmental sound PCBs.
The technical trend of conventional PCBs is described and standards are explained. Furthermore Mr. Kostelnik gave divers examples for eco-designed PCBs and future possibilities.
One of the outstanding examples of environmentally benign concepts for PCBs is TWINflex:
TWINFlex is a printed circuit board in MicroVia technology using foil technology with flexible materials, such as polyimide. The board is flexible in form and function: suitable for high density flexible, flex-rigid and three dimensional circuits.
PCBs in general severe two basic functions, namely the electrical circuits and mechanical functions. In a conventional PCB both functions are very closely linked to each other. The TWINFlex concept, already developed in the 1990s, separates mechanical and electrical functions. The circuits are part of a flex foil. The foil circuit board can be mounted on a homogenous plastic or metal substrate. Thus, the PCB is not one composite material anymore, but high metal content circuits and the monomaterial substrate can be easily separated from each other at end-of-life. Within the circuits part especially the expensive materials, namely noble metals are concentrated. This concept can re-duce recycling costs and increase benefits from concentrated secondary material. Having the WEEE directive in mind, which makes the producer pay for recycling, this concept might directly save money. Also the use of harmful substances during the production-phase can be limited by TWINflex® drastically.
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