Method and device for producing prepreg

Abstract

The invention discloses a method for producing a prepreg. The method is specifically that undesirable edges are cut by adopting laser before material coating colloid is reinforced. By using the laser to cut the undesirable edges before the material coating colloid is reinforced, cut edges are not dipped into the colloid and can be recovered by material producing factories to be re-manufactured, the recycling purpose is achieved, and the using amount of the colloid is reduced. According to statistics and compared with traditional cutting method, 200,000 yuan of cost can be saved every year by adopting the method performing cutting while performing gum dipping, no dust cannot be produced in the cutting process of materials, the environment is protected and prevented from being polluted, and simultaneously good health of operating workers is also ensured.

Description

technical field [0001] The invention relates to the technical field of manufacturing copper clad laminates, in particular to a method for producing a prepreg and a device for realizing the production method. Background technique [0002] Copper Clad Laminate (CCL for short) is mainly used in the production of printed circuit boards. It is made of fiber paper, glass fiber cloth or glass fiber non-woven fabric (commonly known as glass mat) as a reinforcing material, impregnated with resin, single-sided or A product that is covered with copper foil on both sides and hot-pressed. [0003] Reinforcement materials for the production of copper clad laminates (such as glass fiber cloth, synthetic fiber cloth, non-woven fabrics, and fiber paper) are generally removed during the production process because the edge structure of the material does not meet the production quality requirements. The traditional method is to cut by hand with a blade or a blade on an automatic edge trimmer i...

AI Technical Summary

Problems solved by technology

This patent is to apply the laser to the cutting of the reinforced material (prepreg) of the impregnated copper clad laminate. If this method is used to trim the reinforced material after the impregnated glue, although the use of blade cutting can be avoided to a certain extent It is easy to produce a large amount of glass powder, but it also has the following defects: 1, the cut edge has been coated with materials such as epoxy resin, and becomes a waste edge, which cannot be recycled and wastes materials; 2, the waste edge is very processed. Difficult, once handled improperly, it will pollute the environment, and the processing cost is also very high; 3. The temperature during laser cutting is quite high, which will easily cause carbides on the reinforced material after dipping, which will affect the quality of the product

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