SI22158A - Low-temperature detachable label - Google Patents

Abstract

The invention deals with a so-called low temperature detachable label (transfer of the detachable label from the sheet carrier onto the object which is decorated at temperatures between 160 and 200 degrees Celsius), which is generated on the carrier sheet, a basic paper layer, an image layer and a cover layer positioned one on top of the other, required for the procedure in question and new application of the already known techniques of digital xerographic printing. According to the invention the image layer, which is located between the basic layer produced according to the screen printing technique and the cover layer also prepared according to the screen printing technique, is an image layer created according to the technique of digital xerographic printing (enabling the implementation of multi-colour printing in a single work process).

Description

The present invention relates to a low-temperature adhesive formed by a base layer, an image layer and a cover layer formed on a supporting sheet material.

By the word low-temperature is meant a technological parameter in the operation of transferring an adhesive from a carrier sheet material to an object to be decorated when temperatures are in the order of 160 to 200 ° C, the base layer is the material which, at said low-temperature transfer of the adhesive with bearing sheet material on the object allows separation of the decal from the bearing sheet material, its transfer to the object to be decorated and its sealing on the surface of the object, which is decorated when it becomes an integral part, the image layer is a color layer with a decorative layer. The contents as such and the cover layer are protected, as a rule, colorless material.

In the case of known low-temperature labels, the base layer prepared by the screen printing technique and also the prepared coating layer by the screen printing technique are located, located, (depending on the number of printing colors) by the screen printing technique of the prepared color layer.

The disadvantage of the known low-temperature adhesion is the fundamental drawbacks of screen printing, ie. on the one hand a relatively coarse raster print, and on the other, especially in the case of a two- or multi-color image, the problem of establishing the coherence of the raster.

The aim of the invention is to eliminate the aforementioned disadvantages of known low-temperature casts.

According to the invention, the stated object is surprisingly easily achieved by the fact that the screen printing layer has a base layer and also a screen layer prepared coating layer of an imaging layer for the well-known digital xerographic printing technique (which enables multicolor printing in one work step) image layer made.

The present invention also relates to a process for the manufacture of a predefined low-temperature cast, which together with the low-temperature cast defined above, forms a single inventive solution.

According to known methods, a honeycomb layer is prepared with the technique of screen printing and also a coating layer of the image layer prepared with the screen printing technique, and a picture layer (one, two or more) also made with the screen printing technique.

The disadvantages of the known methods are mentioned above and analogous is also the object of the present invention.

According to the invention, the stated object is surprisingly easy to achieve by preparing a base layer between the screen printing technique and the screen coating layer prepared using the known digital xerographic printing technique.

The present invention also goes without saying to the new use of the well-known digital xerographic printing technique, which, together with the low-temperature cast and the process defined above, forms a single inventive solution.

Although digital prints and related procedures are known (e.g., US2004245126, US2003200889 and EP1207050), they are not xerography (x.g. dry, dried, roasted).

The essence of the new use of the well-known digital xerographic printing technique for preparing the image layer at the low-temperature casts defined above is that by eliminating the technique of preparing said image layer by screen printing and introducing for this purpose digital xerographic printing as a whole, even if printing in one step and in raster, which in comparison with screen printing is significantly denser.

Claims (3)

1. A low-temperature adhesive formed by a base layer, an image layer and a cover layer on a carrier sheet bearing one another, characterized in that the screen-primed layer and the screen-printed cover layer are located between an image layer is created for an inherently known technique of digital xerographic printing (which allows multicolor printing in one working step). 2. A process for producing low-temperature adhesives formed by a base layer, an image layer and a cover layer on top of the supporting sheet material, wherein the base layer and the cover layer are prepared by screen printing technique, characterized in that during the base layer and the overlay layer is prepared by the known digital xerographic printing technique. 3. A new use of the well-known digital xerographic printing technique, characterized in that the known digital xerographic printing technique is used to prepare an image layer for low-temperature adhesions formed by a base layer adjacent to one another on a carrier sheet layer and cover layer, the base layer and cover layer being prepared by screen printing technique.