The vacuum press solves the problem of CCL crack

2021-04-14 10:03

We are usingvacuum pressWhen producing CCL, non-woven fabric prepreg is placed around the copper block to fill the gap, but it is not enough to fill the gap only by prepreg. Although its filling ability is very strong, the depth of the gap around the copper block is too deep and the gap is too large, resulting in limited filling ability of prepreg, which cannot ensure sufficient gap filling and increase sufficient external filling. The implementation steps of vacuum press are as follows.
1. The pre-made jig and plate are riveted together.
2. Put the semi-cured sheet on the copper plate and put it into the blind groove.
3. Place the release film and prepreg on the steel plate, place the copper plate on the prepreg, and cover the copper foil.
4. Put invacuum pressPress-fit.




The semi-cured sheet filling scheme of non-woven fabric epoxy resin is pressed by vacuum laminating machine. The glue content is very high. We use its special function to fill the gap around the copper block. The effect is very obvious. If the gap depth around the copper block is too deep and the gap is too large, the filling capacity of the semi-cured sheet reaches the limit range, and the gap filling glue cannot be guaranteed sufficiently. In the gap position between the blind groove and the copper block, add a bad, let the outside be filled with prepreg, multi-directional three-dimensional filling glue, to ensure that the gap filling glue is sufficient. This scheme can be developed in parallel. In addition, the editor reminds everyone that the vacuum degree of the vacuum press must be guaranteed, otherwise it will be wasted.

This article refers to Mr. Yang Xianwei, an engineer in the research and development department of Huizhou Zhongjing Electronic Technology Co., Ltd., "The method of improving the cracks in the buried copper plate"

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