The upper and lower overfeeding of the stenter setting machine means that there are two upper and lower cloth feeding rollers whose speed can be adjusted in the car of the stenter. There is no need to adjust, only need to adjust the upper overfeed to solve the problems of weight and circulation, and the lower overfeed does not need to be adjusted.
Overfeeding usually refers to controlling the speed of the cloth entering the heat setting machine to be slightly higher than the speed of the cloth, so that the fabric shrinks enough in the warp direction and reaches a certain width in the warp direction.
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