This Types of bag is used mainly for packaging of cement and various other products. The material can directly filled by a hose and once the material has been filled to the brim the valve shuts automatically providing a locking system We specially take care about valve size because this is used in online plant and size variation is not allowed in this kind of plants, special care is taken on the quality. Perforated valve bags: These bags are generally used for packaging of cement or any other materials which is hot while packaging The Perforation (small holes) will help the hot air to go out while packaging the material in the bag.

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