| 摘要 |
PROBLEM TO BE SOLVED: To provide a safe sandwich packaging bag to be easily unsealed by the one-touch operation, retaining the shape of the bag in packaging after being unsealed, storing a sandwich not yet taken and keeping the same clean, to be manufactured at a low cost without using a cut tape without using a uniaxial oriented film of cleavage direction properties or a special sealing adhesive tape and guaranteeing the virgin properties when being unsealing. SOLUTION: A surface film of an almost trapezoid shape is overlapped with a back film of the same shape and upper edges and both side edges of both films are connected together, and a triangle sandwich is stored from a lower end opening and a film lower section is folded from four sides and closed together by an adhesive tape and packaged. An unsealing film is overlapped on the outer face of the surface film or the back film and fixed thereon, and the unsealed film is provided with an unsealing knob piece. Two tearing-off lines pinching the unsealing knob and tearing off the film into a belt shape are so constituted as to head for the lower end of the film across the adhesive tape.
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