• 专利标题:   Electro-conductive transfer film in packaging for drinks, toys, comprises carrier layer being of flexible plastics material, release coat layer, lacquer coat layer, electro-conductive layer and size coat layer where release coat layer adhesively secures carrier layer.
  • 专利号:   GB2609710-A
  • 发明人:   HORNBY D
  • 专利权人:   FOILCO LTD
  • 国际专利分类:   H05K003/04
  • 专利详细信息:   GB2609710-A 15 Feb 2023 H05K-003/04 202318 English
  • 申请详细信息:   GB2609710-A GB007524 23 May 2022
  • 优先权号:   GB007490

▎ 摘  要

NOVELTY - Electro-conductive transfer film comprises a carrier layer being of a flexible plastics material, a release coat layer, a lacquer coat layer, an electro-conductive layer and a size coat layer where release coat layer adhesively secures carrier layer and lacquer coat layer together and to which, through one or both of carrier layer and lacquer coat layer, one or more forms of energy can be applied in a predetermined pattern, energy having the effect of activating the release coat layer so as to reduce or eliminate its adhesive quality within or without a perimeter boundary of pattern so that lacquer coat layer and any layers on the opposite side thereof to carrier layer are effectively released from carrier layer in first regions within or without pattern but otherwise remain adhered to carrier layer in second regions without or within pattern and such that released layers can be simultaneously transferred to a substrate material. USE - Electro-conductive transfer film in packaging for drinks, toys, cosmetic, and other high value products. ADVANTAGE - The electro-conductive transfer film provides illumination or some other electronically interactive feature on, around, or inside the packaging, aggressive or brute force methods of forming electrical connection, such as soldering or spot welding, while nevertheless being simple and cost-efficient, are precluded, and only more intricate and thus costly methods can be considered, provides illumination or some other electronically interactive feature on, around, or inside the packaging. DETAILED DESCRIPTION - Electro-conductive transfer film comprises a carrier layer being of a flexible plastics material, a release coat layer, a lacquer coat layer, an electro-conductive layer and a size coat layer where release coat layer adhesively secures carrier layer and lacquer coat layer together and to which, through one or both of carrier layer and lacquer coat layer, one or more forms of energy can be applied in a predetermined pattern, energy having the effect of activating the release coat layer so as to reduce or eliminate its adhesive quality within or without a perimeter boundary of pattern so that lacquer coat layer and any layers on the opposite side thereof to carrier layer are effectively released from carrier layer in first regions within or without pattern but otherwise remain adhered to carrier layer in second regions without or within pattern and such that released layers can be simultaneously transferred to a substrate material. The surface energy between the release coat layer when in its activated state and the carrier layer is greater than the surface energy between the release coat layer in activated state and lacquer coat layer such that, when in activated state, release layer is essentially or substantially retained on carrier layer as other layers beneath are released and transferred to substrate material as a result of the application of energy, and the lacquer coat layer is formed of or comprises an electrically conducting material having an electrical conductivity which less than that of the electro-conductive layer of the transfer film such that the surface of lacquer coat layer can support at least first and second spaced apart direct physical electrical contacts into and out of which an electrical current can flow. The relative conductivities of the lacquer coat layer and the electro-conductive layer and the separation of the electrical contacts being such that the majority of current flow between contacts within the released layers of the transfer film occurs within the electro-conductive layer. An INDEPENDENT CLAIM is included for a substrate rendered electro-conductive by the application of an electroconductive transfer, which comprises a pair of electric contacts applied to film in spaced apart relation along some portion of a length of applied film. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of transfer film. 4AUppermost surface 10AConventionally electro conductive matallised layer 20Transfer film 42Lower operative surface 44Substrate