Multi-layer film, injection molded article decorated therewith and process for the production of the decorated injection molded article
First Claim
1. A multi-layer film for back-molding with a liquid plastic material in an inmold process for the production of a decorated injection molded article having curved surfaces, wherein the multi-layer film has at least one replication lacquer layer which at least on one of its surfaces has a spatial structure producing a visually perceptible and/or technical effect, wherein a contrast layer is arranged in adjoining relationship with at least one surface with a spatial structure at least in region-wise manner,wherein the at least one replication lacquer layer is in the form of a radiation-hardened replication lacquer layer, andwherein the multi-layer film has a receiving layer which is provided over the full surface area as viewed perpendicularly to the plane of the multi-layer film and on which the radiation-hardened replication lacquer layer is arranged only region-wise, andwherein the radiation-hardened replication lacquer layer is arranged only in regions of the multi-layer film, which on the injection molded article decorated with the multi-layer film have a radius of curvature of greater than 0.7 mm and a stretch of less than 10%.
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Accused Products
Abstract
The invention concerns multi-layer films for back-molding with a liquid plastic material in an inmold process for the production of a decorated injection molded article of high optical quality and utilitarian suitability, in particular having curved surfaces, wherein the multi-layer film has at least one replication lacquer layer which at least on one of its surfaces has a spatial structure producing a visually perceptible and/or technical effect, wherein a contrast layer which is preferably in the form of a reflection layer is arranged in adjoining relationship with at least one surface with a spatial structure at least in region-wise manner. The invention further concerns an injection molded article which is decorated with a multi-layer film and a process for the production of the article.
19 Citations
27 Claims
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1. A multi-layer film for back-molding with a liquid plastic material in an inmold process for the production of a decorated injection molded article having curved surfaces, wherein the multi-layer film has at least one replication lacquer layer which at least on one of its surfaces has a spatial structure producing a visually perceptible and/or technical effect, wherein a contrast layer is arranged in adjoining relationship with at least one surface with a spatial structure at least in region-wise manner,
wherein the at least one replication lacquer layer is in the form of a radiation-hardened replication lacquer layer, and wherein the multi-layer film has a receiving layer which is provided over the full surface area as viewed perpendicularly to the plane of the multi-layer film and on which the radiation-hardened replication lacquer layer is arranged only region-wise, and wherein the radiation-hardened replication lacquer layer is arranged only in regions of the multi-layer film, which on the injection molded article decorated with the multi-layer film have a radius of curvature of greater than 0.7 mm and a stretch of less than 10%.
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18. A multi-layer film for back-molding with a liquid plastic material in an inmold process for the production of a decorated injection molded article having curved surfaces, wherein the multi-layer film has at least one replication lacquer layer which at least on one of its surfaces has a spatial structure producing a visually perceptible and/or technical effect, wherein a contrast layer is arranged in adjoining relationship with at least one surface with a spatial structure at least in region-wise manner,
wherein the at least one replication lacquer layer is in the form of a radiation-hardened replication lacquer layer, and wherein the spatial structure is formed at least region-wise as a diffractive structure, and wherein the diffractive structure forms an optically variable element, and is arranged only in regions of the multi-layer film which have a stretch of less than 10% on the article which is decorated with the multi-layer film.
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20. A multi-layer film for back-molding with a liquid plastic material in an inmold process for the production of decorated injection molded articles, wherein the multi layer film has at least one replication lacquer layer which at least on one of its surfaces has a spatial structure producing a visually perceptible and/or technical effect, wherein a contrast layer is arranged only region-wise in adjoining relationship with at least one surface with a spatial structure, and
wherein the multi-layer film in regions without a contrast layer has at least in region-wise manner at least one function layer which can correspond to the replication lacquer layer, wherein the at least one function layer has reflecting and/or transmitting structures which are in the form of light-diffracting, light-refracting, light-diffusing, light-polarising or light-absorbing microstructures or nanostructures, and wherein the function layer includes: -
a. at least one diffuser element for producing a uniform or adapted light distribution over the surface of the injection molded article decorated with the multi-layer film, and/or b. at least one magnification lens having diffractive or refractive lens optical means, and/or c. at least one dereflection layer or a motheye structure for reducing reflections or for improving transmission, and/or d. at least one polarisation filter layer, and/or e. at least one filter layer for filtering given wavelengths of visible light. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification