Laser holograph mould pressing method

Abstract

The invention relates to a laser holography graph-text stamping method. The method comprises that a stamping working plate is installed on a cylinder, and at least two stamping working positions are arranged along the circumferential direction of the stamping working plate. The method is characterized in that: a certain pressing force is maintained between the stamping working plate and the cylinder at each stamping working position; the stamping working plate is divided into a stamping working area the temperature of which reaches the stamping working temperature and a transitional area the temperature of which is lower than the stamping working temperature, and the joints of the two ends of the stamping working plate are positioned at the transitional area; at each stamping working position, the stamping working area is used for stamping the laser holography graph-text at the stamping materials, and for leading the laser holography graph-text stamped at the stamping materials by each stamping working position to be subsequently connected. The laser holography graph-text stamping method of the invention does not lead to plate joints corresponding to the joints at the stamping materials, and leads continuous laser holography graph-text to be stamped at the stamping materials; the installation process and the testing process of devices used by the method of the invention are easy and fast; a compression roller and the cylinder are not mutually compacted, thus leading to stable operation and good product quality.

Description

technical field [0001] The invention relates to a method for embossing laser holograms and texts on molding materials. Background technique [0002] The laser hologram embossing method includes the following steps: first obtain the laser hologram through holography or computer laser holographic simulation design; then reproduce the laser hologram on the master plate through a laser engraving machine; the master plate is copied into Nickel version (i.e. molded working version); the nickel version is installed on the molding machine, and the nickel version is heated and pressed on the molding surface of the molding material (the molding material is usually a film, such as OPP film (oriented polypropylene film), PET film ( polyester film), laser holograms can be pressed on the molding surface of the molded material, and the molded material with laser holograms is commonly called laser film. The laser film can be aluminized, compounded, and peeled off to obtain laser transfer pa...

AI Technical Summary

Problems solved by technology

However, in the production process of this laser holographic image and text molding device, the pressure between the first pressing roller 03, the second pressing roller 05 and the version roller 01 is changed by the cam 07, and the pressure between the first molding station and the second molding station is changed. To achieve intermittent embossed laser holograms, due to the need to produce periodically changing pressure, when the first pressure roller 03 or the second pressure roller 05 presses against the plate roll 01 and leaves the plate roll 01, a huge impact force is generated, which is easy to cause Indentation occurs on the molding material 08, which affects product quality; in addition, the processing of the cam 07 is difficult, and repeated adjustments are required during installation to keep the laser hologram molding device in good condition. Moreover, the cam 07 is easy to wear during the production process, resulting in The profile of the cam 07 is deformed, resulting in inaccurate pressure changes between the first press roller 03 and the second press roller 05 and the plate roller 01, which adversely affects product quality

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