CZ7400U1 - Spatial decor of flat transparent materials - Google Patents

Abstract

Three-dimensional decor for flat transparent materials wherein face of such transparent materials is provided with an optical screen (1) consisting of cylindrical lenses whose focus points lie in the plane of the reverse side of the material applied which reverse side is printed with a reverse side screen (2) whose height dimensions are identical to those of the desired three-dimensional pattern (3) while the width of these elements is reduced to 95 % to 105 % of the spacing between the individual elements of the optical screen (1).

Description

Flat transparent material is industrially decorated with printing, sticking, dyeing, painting, gilding and the like. In all these cases it is a flat, two-dimensional decor. Holography has limited possibilities of use due to its technical and manufacturing demands. In foils provided with special lens screens, several methods of creating three-dimensional effects are known, from which the principle of spatially patterned foil according to the art. No. 248189, according to which lines are formed which appear to be located deeper in space, i.e. beyond the plane of the film.

In this case, it is possible to speak of a three-dimensional effect, but limited only to a decoration composed of regular vertical lines, possibly combined with normal flat printing.

SUMMARY OF THE INVENTION

The spatial decor of the flat transparent materials according to the utility model allows to create a wide range of three-dimensional patterns, seemingly located behind and in front of the plane of their surface. Transparent films and sheets of organic and inorganic glass are considered as transparent materials. In order to create a decor with a spatial effect, the front side of these transparent materials must be provided with cylindrical lenses, the focal points of which lie in the plane of the reverse side of the material. To achieve a spatial pattern, the reverse side is provided with a grid whose individual elements are based on patterns to be created but which are transformed in a certain way:

their height dimensions, i.e. the dimensions parallel to the linearity axis of the optical grid, do not change during the transformation, but their width dimensions, i.e. the dimensions perpendicular to the linearity axis of the optical grid are reduced so that the total width of the transformed pattern is reduced to 95 to 105% individual elements of optical raster. When these width dimensions are reduced in the range of 95 to 99.9%, patterns are formed in depth, i.e., behind the plane of the material; when reduced in the range of 100.1 to 105%, patterns are emerging into space, i.e., in front of the plane of the material. As a rule, the smaller the difference in pitch between the individual elements of the backing and optical raster, the greater the spatial effect and vice versa.

An unlimited range of spatial patterns can be created according to the above principles. By combining reverse dots of different densities, you can create an optical impression of nets, tensed in space, or of various concave or convex bodies, etc.

The reverse screen can also be combined with normal flat printing, further emphasizing the three-dimensional effect of spatial decor. This combination can be accomplished in several ways: first of all, it is possible to assemble, in a conventional manner, the flat printing and the reverse screen by covering them in the production of the originals. Another possibility is to print the reverse side first by flat printing and then by the reverse screen, so that when viewed from the front side, the spatial decor appears only in areas not covered by this flat printing. Another possibility is to perform flat printing on the face of the material, either by means of stickers or even by direct printing.

Due to a certain unevenness of the material due to the surface of the lens pattern, it is necessary to select suitable printing techniques such as screen printing or pad printing, respectively.

Regarding the actual printing of the reverse raster, it is not important from the point of view of the spatial effect if the printing is carried out on a substrate which is firmly attached to the transparent material by lamination or gluing, or if printing is done directly on the reverse surface of the material.

Exemplary embodiment

Fig. 1 shows a spatial pattern, which we have chosen in this case in the form of a square placed on the edge. Our intention will be to create a spatial decor, composed of a network of these squares, which will appear to be placed behind the plane of the film. In FIG. 2, one element of the selected decor is drawn after its transformation, according to the principles described above. It is clear from the figure that its height dimensions have been preserved, while its width is reduced to about 95% of the spacing of the individual elements of the optical grid. FIG. 3 is a schematic view of a cut-out of the transparent material including the backing 2 and the resulting pattern 3 forming a spatial decor.

It can be seen from FIG. 3 that the density of the cylindrical lenses forming the optical grid 1 differs from the density of the reverse grid 2 chosen by us. In this example, because we wanted to achieve a spatial pattern that would appear to be placed at a depth beyond the plane of the film, we transformed all of its elements so that their width was about 5% shorter than the width of the individual cylindrical lenses of the optical screen 1 The resulting spatial pattern 3, seen through the optical grid 1 by each eye at a different viewing angle, creates the impression of a deep spatial effect.

Industrial applicability

The spatial decor of flat transparent materials can be used on consumer goods packaging, industrial product design materials, book, CD, LP, video cassette packaging, printing, advertising, architecture and applied art.

Claims (2)

Spatial decor of flat transparent materials, characterized in that the face side of these materials is provided with an optical grid (1) composed of cylindrical lenses, the focal points of which lie in the plane of the reverse side and this side is printed with a reverse grid (2). the same height dimensions as the resulting spatial pattern (3), 30 whereas the width of these elements is reduced to 95 to 105% of the pitch width of the individual elements of the optical grid (1). Spatial decor of flat transparent materials according to claim 1, characterized in that the individual elements of the reverse screen (2) have at least part of the decorative surface a width varying between 95 and 105% of the spacing of the individual elements of the optical screen.