How does the square bottom valve bag solve the exhaust problem during cement filling?

The general operation is as follows: a pinhole every 6mm in the longitudinal direction and every 8mm in the transverse direction of the laminating cloth. The drilling needle adopts a conical needle, and the exhaust hole adopts the method of drilling from the inside to the outside. The diameter of the needle is 2mm or 1.5mm.

Anhui Tianda environmental protection new materials Co., Ltd. mainly produces square bottom valve bags, internally coated woven bags, externally coated woven bags, color printing woven bags, paper plastic three in one bags, flexible container bags, PE bags, FFS films, mesh bags, plastic woven bags, polypropylene raw materials, etc.

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