When it is used to groove more than twice the paper boards, After the compacting pressure flat belt so that the cardboard will not take place, curly, thus ensuring the quality of grooves.

• 在调节方便的同时在传动机械上增加了数条压平带，使得二次以上开槽的纸板，在进入传送装置时，经过压平带的压紧使纸板不会走位、卷曲，从而保证开槽的质量。