Method for producing equal edition breadth holographic moulding film and its molding device

Abstract

The invention discloses a method for manufacturing a pressed film of an equal-plate-breadth holographic mask and a mold pressing device thereof. The method comprises the following steps: detecting the actual plate breadth of the pressed film of the equal-plate-breadth holographic mask in a constant-tension control section, comparing the detected actual plate breadth with the preset plate breadth to obtain a plate breadth difference, adjusting the tension of a variable-tension control section according to the plate breadth difference, facilitating film material of the variable-tension control section to stretch or shrink after entering the constant-tension control section in order to compensate the plate breadth difference and to produce the high-precision pressed film of the equal-plate-breadth holographic mask. The mold pressing device comprises a set of leading-in traction rollers, a set of mold pressing rollers, a set of leading-out traction rollers, a guide roller and a stretch roller, which are arranged in order. The mold pressing device is characterized in that: the mold pressing device is provided with a tension control device which is adjusted to compensate the plate breadth difference caused by changes of temperature and properties of the film material, so as to control the difference within a certain range, thereby improving the precision of the plate breadth and outputting high-precision pressed films of the equal-plate-breadth holographic mask.

Description

Technical field [0001] The present invention relates to a method for holographic molding of a film, and the present invention also relates to a molding device for producing a holographic molded film of equal format. Background technique [0002] As shown in Figure 1, the molding device in the existing molding press generally includes an introductory traction roller group 1, a molding roller group 2, and an outgoing traction roller group 3 arranged in sequence, and a set between the inducting traction roller group 1 and the molding roller group 2 is provided. There is a tension roller 4, and a guide roller 5 and a tension roller 6 are arranged between the molding roller group 2 and the lead-out traction roller group 3. The lead-in traction roller group 1 is composed of lead-in traction rollers 19 and 22, and the aforementioned lead-out traction roller group 3 It is composed of lead-out traction rollers 13, 18. [0003] The above-mentioned lead-in traction roller group 1 and the mo...

AI Technical Summary

Problems solved by technology

[0005] In the production process of the holographic molded film 7', the tension roller 4 of the molding device has a tension and flattening effect on the film material 7, and the tension roller 6 has a tension and flattening effect on the holographic molded film 7', but, due to production During the process, factors such as temperature, film material 7 or holographic molded film 7' characteristics, stop and restart etc. are constantly changing, especially changes in film material 7 or holographic molded film 7' characteristics (such as thickness, expansion rate) will affect the holographic molded pressure. The format of the film 7' has a great influence, resulting in irregular changes in the format of the holographic molded film 7', and even a sudden change, with an error of more than 0.5-2mm

[0006] Therefore, the existing molding device cannot produce a holographic molded film with high width accuracy.

This kind of holographic molded film with low precision will further expand the error after processing such as slitting, compounding, and peeling.

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