Lurex B.v.

Koninklijke Emballage Industrie Van Leer

Johannes A De Leeuw

Johannes T Brugmans

A metallic laminate is prepared by coating a major surface of a polymeric film with a release agent having the capacity to effect a weak releasable bond from the surface of the polymeric film and a strong non-releasable bond with a surface of a stratum of metal which has been freshly vapor deposited, precipitating a thin coherent stratum of metal on the coated surface of the polymeric film by vapor deposition, applying a layer of standard laminating adhesive to the exposed stratum of metal and bonding the stratum of metal to a non-metallic substrate by standard laminating techniques using a liquid lacquer that, after application on the carrier, has a contact angle of 0.degree. to the carrier surface. The resulting metallized vapor coated composite structure has a reflectivity of at least 85%, a heat emission of about 8% of the Stefan Boltzmann constant at 25.degree. C., a mirror reflectivity of at least 4, and dead fold properties that are the same as those of the substrate.

Metallized composite structure and a method of preparing same

A major surface of a polymeric film such as untreated polypropylene is coated with a release agent which has the capacity to effect a weak, releasable bond with the surface of the polymeric film and a stron, non-releasable bond with the surface of metal, e.g., aluminum, which has been freshly vapor deposited; precipitating a thin, coherent stratum of the desired metal upon the coated surface of the polymeric film by vapor deposition; whereupon are applied simultaneously (1) a layer of a standard laminating adhesive to the stratum of the metal, which is then bonded thereby to the non-metallic substrate by standard laminating techniques; a composite structure having the following configuration is produced as a result: polymeric film/release agent coating/vapor deposited metal stratum/laminating adhesive layer/non-metallic substrate and (2) a coating of the release agent to the free major surface of the polymeric film; from which composite structure the polymeric film is then stripped.

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Apeldoorn, Netherlands

Johannes A De Leeuw