| 摘要 |
A process for making a bright metal laminate comprises applying a highly reflective metal layer to a supporting baseweb comprising a flexible thermoplastic and thermoformable polyurethane film. The metal film comprises indium or an alloy of indium and is applied to a surface of the baseweb by vapor deposition techniques. An optically clear polymeric outer layer of preferably acrylic or polycarbonate resin is laminated in free-film form to the exposed surface of the metalized film under heat and pressure to bond the outer layer to the metal film. The surface of the polyurethane baseweb is sufficient to produce adhesion of the metal layer to the baseweb in the absence of an intervening bonding layer or surface treatment, while smoothing out the metal layer to a mirror-like finish that produces a reflective laminate having a DOI greater than 95. The laminate can be thermoformed to a three-dimensional shape while retaining its high level of distinctness-of-image.
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