7.Third process: After operated by the back forward gas baffler, the paper reciprocates to the drum of the third layer to perform flanging of the front side.
二个过程：纸张经前推气挡
之作用，再往复至二层滚筒完成后边折边。
；
节墙7.Third process: After operated by the back forward gas baffler, the paper reciprocates to the drum of the third layer to perform flanging of the front side.
二个过程：纸张经前推气挡之作用，再往复至二层滚筒完成后边折边。
6.Second process: After operated by the front forward gas baffler, the paper reciprocates to the drum of the second layer to perform flanging of the backside.
三个过程：纸张经后推气挡之作用，再往复至二层滚筒完成前边折边。
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