Compound seal bag is moulded to paper

The utility model discloses a compound seal bag is moulded to paper relates to powder material packing technical field. Personally experience sth. Part of the body including the bag, bag folding sealed formation in body lower part is gone to the bottom, and the sealed upper base that forms is folded on upper portion, and upper base department is equipped with a valve port structure that communicates with bag internal chamber, composite material is moulded for paper to the bag body, is equipped with penetrating steady voltage micropore on the lateral wall, and the bag body is including utilizing compound paper layer and the plastic layer together of gluing agent, and it is peripheral that the plastic layer is located on the paper layer, the plastic layer is the seamless plastic layer of lateral wall, and there is the paper layer of limit seam on the paper layer for the lateral wall, and the edge of its limit seam passes through the adhesive and bonds. Its simple structure, convenient to use, the leakproofness