Readily opened tubular sealed casing

The invention claims a taken the plastic composite film and base packing with a cylindrical, is a round, is overlap part of the bent base film both sides of the base film and hot sealing overlapped regions, when film on both sides of each other is overlap film fringe area of the rear of the regions formed in thermal forming; and synthetic plastic film device of a tubular, base film comprises three or multiple-layer plastic composite film. And medium layer the peep force between the inner layer and is lower than the inner layer and medium layer the horizontal the edge, force from, wherein the opening of the shell; the hot sealing area is easy to form the outer layer of film's from middle film cutting, and further tears of the outer layer film from the middle film, a capable of the outer shell easily.