초록 ▼

An improved reclosable bag structure formed out of a plastic film or laminations thereof with front and back wall panels attached along their bottom and along their side edges and having fastener strips along the inner surfaces of the panels at the bag top with the strips secured thereto and one str

An improved reclosable bag structure formed out of a plastic film or laminations thereof with front and back wall panels attached along their bottom and along their side edges and having fastener strips along the inner surfaces of the panels at the bag top with the strips secured thereto and one strip having a web element which is secured at its lower edge below the center line of the first strip and the other strip having a web element which is secured to the top of the strip with said web elements bonded along their faces to the inner surfaces of the panels at the top of the bag so that forces against the bag walls cause the strips to tilt and resist separation with said forces being applied in a shear mode rather than a peel mode.

대표청구항 ▼

A reclosable bag structure comprising in combination: front and back flexible plastic film wall panels attached along their bottom and, side edges and separated at their top edges to form a bag with a top filling opening; and separate first and second complementary pressure closable and reopenable c

A reclosable bag structure comprising in combination: front and back flexible plastic film wall panels attached along their bottom and, side edges and separated at their top edges to form a bag with a top filling opening; and separate first and second complementary pressure closable and reopenable closure strips having interlocking profiles in confronting relationship within said top opening and each strip attached to the inner surface of a wall panel; the first strip having a web portion attached at its base from a location below the center line of the interlocking profiles, with said web portion extending upwardly therefrom; the second strip having a web portion attached at its base from above the center line of the interlocking profiles, with said web portion extending upwardly therefrom; said web portions being surface bonded to the inner surfaces of the front and back panels respectively so that forces on the panels from internally of the bag will pivot the strips in a hinge action about their base so as to pull the closure strips with a shear action which resists separation of said strips.