Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1991-09-05
1993-07-06
Herbert, Jr., Thomas J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428215, 428216, 428336, 4284231, 4284246, 4284258, 428457, B32B 702, B32B 2708, B32B 1508
Patent
active
052252671
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
1. Technical Field
The present invention relates to a laminated resin film having a metallic appearance and more particularly to a laminated resin film having a metallic appearance which can impart a beautiful ornament of a metallic tone to a substrate by being affixed on to a desired substrate with an adhesive or a pressure-sensitive adhesive, or by means of thermal lamination or the like.
2. Background Art
Hitherto, as the resin film having a metallic appearance (hereafter, sometimes referred to as a metallic tone film), there have been known, for example, those which are composed of a resin film, such as a polyester type film, an acrylic type film, a polyvinyl chloride type film or the like, on one surface of which is formed a thin metal layer by a process of deposition, sputtering or the like, and they are used mainly for ornamental purposes and the like.
In the case of metallic tone films prepared using a polyester resin film as the resin film, although generally bonding between the metal layer and the polyester film is relatively good, they have disadvantages that the polyester resin is unsuitable for exterior use since it has a poor weatherability, and the polyester resin film is very hard and hence it has a poor ability to follow curved surfaces, resulting in that it cannot be affixed onto curved surfaces.
Also, in the case of metallic tone films prepared using an acrylic resin film, the acrylic resin has a special character that it has a tendency of losing flexibility with an increased solvent resistance, and hence it is impossible to obtain therefrom metallic tone films which are excellent in both printability (solvent resistance) and flexibility.
Further, in the case of metallic tone films for exterior use prepared using a polyvinyl chloride type resin film, the films can be imparted with weatherability, flexibility and solvent resistance by adjusting their formulation in various ways to modify the properties thereof. However, in this case, generally bonding to the metal layer is difficult to be obtained and for this reason there arises a problem that peeling off of the metal layer occurs, especially when used in the open air, or some other problem. In addition, when used in the open air, it happens that the metal layer is corroded and deteriorated with hydrochloric acid which is formed because of deterioration of the polyvinyl chloride resin, resulting in failure to give metallic tone films for exterior use having good weatherabilities under the present conditions.
On the other hand, there have been made several approaches for obviating the aforementioned defects involved in the use of the polyvinyl chloride type resin films.
For example, Japanese Patent Application Laid-Open No. Sho-58-2627 discloses a method of metal deposition for polyvinyl chloride resin articles which comprises providing on a surface of a polyvinyl chloride resin article a cured film layer of a cationically polymerizable resin composition which cures by irradiation of an actinic radiation, and practicing metal deposition on a surface of the film. Japanese Patent Application Laid-Open No. Sho-5-140965 discloses a primer composition for metal vacuum deposition which contains an aminoalkylsilane and a film-forming resin.
However, no consideration was made at all about weatherability in the above-proposed method and composition because both of them were not designed for exterior use. Also, because no consideration was made about printability, the metallic tone film prepared according to the above proposal has a defect that fine cracks occur in the metal layer when an ink clearer or the like is printed on the surface resin layer and it is then dried. Presumably, this occurs because the metal layer cannot completely follow the deformation of the resin layer due to heat or the like when heated for drying.
Also, in the case where metallic tone films for exterior use are fabricated which have an intermediate binding layer between a surface resin layer and a metal layer, especially where a flexible resin is used in the
REFERENCES:
patent: Re28506 (1975-08-01), Quaintance et al.
patent: 3765994 (1973-10-01), Quaintance et al.
patent: 4317857 (1982-03-01), Kanda et al.
Derwent Publications Ltd, London, "Manufacture Decorate Board Metallic Gloss Relief Pattern Vacuum Deposit Metal Print Colour Ink Etch Form Intaglio", May 24, 1985, JP-A-60 092832 (Toppan Printing KK).
Derwent Publicatons, Ltd, London, "Sunlight Control Laminate Material Manufacture Coating Substrate Turn Resin Paint Metal Cure Resin Contain React Dilute Photopolymerise Initiate", Dec. 11, 1980, JP-A-55 158962.
Kinsen Kazuhisa
Ochi Katsura
Oonishi Yasuaki
Herbert, Jr. Thomas J.
Nippon Carbide Kogyo Kabushiki Kaisha
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