Multi-layered compound material for producing blanks for coins
Multilayer composite material comprises: two outer layers containing at least one metal comprising coinage metals, stainless steel or aluminum; at least one middle layer that contains at least one thermoplastic resin and is located between the two outer layers; and an interfacial layer containing at...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | Multilayer composite material comprises: two outer layers containing at least one metal comprising coinage metals, stainless steel or aluminum; at least one middle layer that contains at least one thermoplastic resin and is located between the two outer layers; and an interfacial layer containing at least a hot-melt adhesive between the respective outer layer and the middle layer. Independent claims are included for: (1) preparing the multilayer composite material, comprising forming a layer structure from at least two metal layers, at least two hot-melt adhesive layers and at least one plastic layer containing at least one thermoplastic resin such that the plastic layer is arranged between the two hot-melt adhesive layers, where the two metal layers are disposed on the outside of the hot-melt adhesive layer and the layer structure is subsequently laminated at a temperature of 100-190[deg] C and a pressure of 3-400 N/cm 2>; (2) a blank for producing coins, comprising the multilayer composite material; and (3) producing blanks, comprising punching out the blanks from the multilayer composite material.
Die vorliegende Erfindung betrifft ein mehrschichtiges Verbundmaterial enthaltend eine Kunststoffmittelschicht und zwei Metallaußenschichten, welche mit geeigneten Klebeschichten miteinander verbunden sind, ein Verfahren zu dessen Herstellung sowie dessen Verwendung zur Herstellung von Rohlingen für Münzen. |
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