| 摘要 |
A plastic extruded bag construction comprises a unitary one piece plastic extrusion including a thin wall plastic closure web area which may serve as a gussett normally extending into the bag and adapted to be projected from the mouth of the bag as a pouring spout. Pull flange portions of substantial length all in one piece in the extrusion together with the closure web have proximal ends joined respectively to opposite sides of the closure web area. Separable resiliently flexible interlocking complementary fastener profiles integral in one piece in the extrusion with the closure web area and the pull flange portions adjacent to the proximal ends of the pull flange portions are arranged to be interlockingly separably coupled together and separated by manipulation of the pull flange portions and flexing of the closure web area. A bag body has side wall panels with end parts thereof joined to the extrusion adjacent to the profiles whereby the closure web provides a closure for the bag inwardly from the fastener profiles and which closure must be ruptured to gain access into the bag. Several embodiments are disclosed.
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