PURPOSE: To make it possible to open a sealed bag easily by the force of fingers by forming the sealed bag using a laminated film which consists of a base film on which a large number of scars are provided and a heat-sealable film, and for which the scars on the base film are covered by the heat-sealable film.

CONSTITUTION: For a sealed bag with a form of 3-way sealed type, 4-way sealed type, etc., of which the outer edge is heat-sealed at a longitudinal welded part 5 and lateral welded part 6, as the material, a laminated film which consists of a base film on which a scar group A is provided and a heat-sealable film, and for which the scars 1 on the base film 8 are covered by the heat- sealable film is used. Each scar 1 is made to have a narrow long shape of which the length is longer than the width, and the length is made to be, e.g. not more than 0.5mm and not less than 1.0mm, and the scars 1 are arranged in the crossing direction to the end edge line 2. Also, tips 3, 4 of the scar 1 are made to be an acute angle, and a tear shall be generated at those areas. By this method, when a tearing force is added to the end edge line 2, the sealed bag is started being torn from the scar 1 area, and the opening of the bag is made easier.