Single mold pressing continuous printing process and device

Abstract

The invention provides a single mold pressing continuous printing process and a device. The process comprises the following steps of: sleeving a seamless flexible annular metal soft belt outside more than two plate inner rollers; tightly opening the seamless flexible annular metal soft belt by the plate inner rollers; stamping patterns of the seamless flexible annular metal soft belt outside the plate inner rollers through opposite pressing of the plate inner rollers and an opposite pressing roller; and heating and cooling the patterns to ensure that the patters are developed to a film base material, wherein polyethylene terephthalate (PET), polyvinyl chloride (PVC), biaxially-oriented polypropylene (BOPP) and the like are generally used as the base material, and a layer of developing coating material is coated on the surface of the base material. Through the process and the device, seamless printing can be realized in a true sense, the production output is doubled and redoubled, and the process steps and the structure of the device are simple, so that the process and the device are suitable for industrial production.

Description

technical field [0001] The present invention relates to a molding process and device, in particular, to a process and device for molding and continuously printing a film substrate coated with developing paint. Background technique [0002] In the production process of laser rainbow film, laser holographic anti-counterfeiting trademark, and vacuum aluminized paper for anti-counterfeiting, molding is an extremely important core link. With the widespread use of laser holographic anti-counterfeiting films in tobacco, wine, food, medicine, digital products, household appliances, daily necessities, cosmetics, various license cards and other industries, the market demand for laser holographic anti-counterfeiting films has grown exponentially. The production of laser holographic anti-counterfeiting film generally uses PET, PVC, BOPP and other films as the base material, and coats a layer of developing paint on the surface of the base material. The pressure imprints the nickel plate...

AI Technical Summary

Problems solved by technology

This process has the following disadvantages: 1. There will be gaps when the nickel plate is coated on the surface of the roller body, and gaps (plate gaps) will also appear on the finished film during embossing

However, this process still has the following disadvantages: 1. The structure of the roller body is relatively complex, and the adjustment requirements of the production process parameters are relatively high. When replacing new patterns and films, it is difficult to debug; 2. There are heating and cooling areas inside the roller body. The body is prone to deformation due to the large temperature difference, which not only affects the service life of the roller body but also affects the product quality; 3. In order to ensure the temperature difference of the roller body required by the process, forced circulation cooling is required for the low temperature area, which consumes high energy consumption and is relatively simple. The power consumption of the secondary embossing process is more than 2-3 times; 4. The seam formed by embossing cannot be fundamentally avoided, and the seam just fades, but does not disappear fundamentally

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