Preparation method of die cutting piece with copper foil

Abstract

The invention relates to a preparation method of a die cutting piece with a copper foil, which comprises the following steps: (1) preparation of a first-stage material belt: sequentially laminating a double-sided adhesive tape (2) and double-sided collagen paper (3) on a box sealing adhesive tape (4), respectively laminating first mylar (5) on two sides of the double-sided adhesive tape (2), and then covering a release film (1) on the uppermost side to form the first-stage material belt; (2) primary punching die cutting and waste discharging; (3) preparation of a secondary material belt; (4) secondary punching die cutting and waste discharging; (5) preparation of a third-stage material belt; (6) third-time punching die cutting and waste discharging; and (7) product forming and rolling: attaching a third single-sided adhesive (10) to the first single-sided adhesive (8) after third-time punching die cutting and waste discharge to obtain a die cutting piece with a copper foil, and rolling the die cutting piece with the copper foil. Compared with the prior art, the method has the advantages of saving copper foil consumption and the like.

Description

technical field [0001] The invention relates to the field of die-cut parts processing, in particular to a method for preparing die-cut parts with copper foil. Background technique [0002] In the die-cut parts with copper foil, since the later use of copper foil requires reflow soldering, the temperature will rise due to reflow soldering. If the die-cut parts contain a release film, the release film will curl when exposed to high temperature. Use paper to replace the position of the release film. Generally speaking, use double-sided collagen paper directly. [0003] However, in the die-cut products, the overall size of the double-sided collagen paper is larger than the size of the double-sided tape, but the size of the double-sided collagen paper and the double-sided tape in the raw materials are the same, which means that part of the double-sided tape needs to be washed Cut away. The existing technology often needs to use copper foil with the same width as the double-side...

AI Technical Summary

Problems solved by technology

The existing technology often needs to use copper foil with the same width as the double-sided collagen paper and double-sided adhesive to cover the double-sided adhesive, so as to prevent the excess double-sided adhesive from leaking during die-cutting and resulting in defective products. The copper foil will also be punched off at the same time, which is wasted and greatly increases the production cost

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