Corrugated edge and copper scale preventing method suitable for divided cutting of flexible printed circuit board

Abstract

The invention relates to a corrugated edge and copper scale preventing method suitable for divided cutting of a flexible printed circuit board. The method comprises the steps that before divided cutting is performed on the flexible printed circuit board, a copper layer, arranged at the position of a lower knife edge of a cutting knife in the divided cutting process, on the flexible printed circuit board is removed, and a cutting area only with a circuit board base material is formed; when divided cutting is performed on the flexible printed circuit board, a lower knife in the cutting area cuts the flexible printed circuit board. Before divided cutting is performed on the flexible printed circuit board, the copper layer at the position of a divided cutting knife edge is removed, so that when divided cutting is performed on the flexible printed circuit board, the cutting knife can not cut the copper layer, and therefore the corrugated edge phenomenon can be avoided in the copper layer at the position of the knife edge or the copper scale is prevented from being cut down. Meanwhile, the service life of the cutting knife can be prolonged, the work production efficiency is improved, the cutting edge after cutting cannot cut work staff, and the work safety is improved.

Description

technical field [0001] The invention relates to an operation method for preventing ruffles and copper shavings from appearing when the flexible printed circuit board is cut during the RTR process of the flexible printed circuit board. Background technique [0002] In the existing production of flexible printed circuit boards, it is usually necessary to use a cutter to cut a large-sized flexible printed circuit board into several smaller-sized flexible printed circuit boards. When cutting the flexible printed circuit board, at the edge of the cutting knife, the copper layer on the flexible printed circuit board will have a corrugated deformation, that is, the lotus leaf phenomenon, and a little copper scrap will be produced. On the one hand It will lead to quality problems of flexible printed circuit board products. On the other hand, it will also reduce the service life of the cutting knife and affect the working efficiency. The edge of the copper layer after cutting may als...

AI Technical Summary

Problems solved by technology

When cutting the flexible printed circuit board, at the edge of the cutter, the copper layer on the flexible printed circuit board will have a corrugated deformation, that is, the lotus leaf phenomenon, and a little copper scrap will be generated. On the one hand, It will lead to quality problems of flexible printed circuit board products. On the other hand, it will also reduce the service life of the cutting knife and affect the working efficiency. The edge of the copper layer after cutting may also cut the workers and bring safety hazards.