An easy-to-open packing bag capable of easily exposing an edge of a packed article by peeling off a heat bonded portion and at the same time by tearing off a packing film on the front side, which is constructed such that two quadrangular packing films having thermoplastic resin inner-surface layers are overlapped at the thermoplastic resin layer surfaces, a non-heat bonding portion is left in a specified region on one side, a U-shaped peripheral edge heat bonding portion is formed on the other three sides, an outwardly protruding heat bonding portion for connecting the opposite ends of the peripheral edge heat bonding portion is formed with at least the protruding heat bonding portion kept peelable and a notch is formed in a position adjacent to the end of a peripheral edge heat bonding portion of at least one edge of a packing film of the front side.
申请公布号
WO9948769(A1)
申请公布日期
1999.09.30
申请号
WO1999JP01472
申请日期
1999.03.24
申请人
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.;YAMAMOTO, SADAO;YAMADA, SHIN;MANABE, KAZUTAKA