re:Woven bag folds, do you know why?

Woven bags of the fold phenomenon, what is the reason for the following let us together to a detailed look at it!
1, the expansion of the top of the expansion of the device is relatively tight, both sides of the braided cloth by the role of friction resistance increased, the two sides of the woven bag relative elongated, elongated woven cloth through the traction roll and then retracted, both sides become The tight side, formed on both sides of the middle of the loose loose cloth.
2, the expansion of the top of the expansion is relatively tight at the same time, four expansion rods and cloth is not close, the two sides of the weaving cloth relative elongated, elongated woven cloth through the traction roll and then retracted, both sides change Became tight side.
Anhui Day Environmental Protection New Materials Co., Ltd. production of woven bags flat, no wrinkles, widely used in rice, flour, chemical and other packaging.

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