Plastic zipper bag with anchor-socket attachment arrangement

A bag structure having a thin web material body having wall panels providing an openable top portion flanked by opposed upwardly projecting pull flange portions, and extruded plastic zipper means carried by said body along said pull flange portions, and comprising:

• said body and said zipper means being fusibly incompatible;
• said zipper means comprising a pair of extruded plastic strips having complementary separably interlockable zipper profiles located substantially below upper ends of said pull flange portions;
• said plastic zipper strips having base socket parts providing respective sockets extending therealong and said pull flange portions having anchorage structures received in said sockets;
• said anchorage structures having anchor holes therethrough at predetermined intervals along the sockets;
• anchors extending from said zipper socket parts into said anchor holes and thereby permanently securing said zipper strips to said pull flange portions;
• and
• said pull flange portions in each instance extending substantially beyond said socket parts or said socket parts extending substantially beyond said flange portions and thereby providing digital grasping areas of a length adapted for providing a pilfer evident seal when sealed together.

A method of making a bag structure having a thin body providing an openable top portion flanked by opposed upwardly projecting pull flanges, and an extruded plastic zipper means carried by said body along said pull flanges, and comprising:

• forming said body from one selected material and said zipper means from extruded plastic material which is fusibly incompatible with the material of said body;
• providing said zipper means as a pair of strips having complementary separably interlockable profiles located substantially below upper ends of said pull flanges;
• forming said zipper strips with sockets extending therealong;
• receiving material of said body in said sockets with anchor holes at predetermine intervals therealong;
• forming anchors extending from said zipper strips into said anchor holes and thereby permanently securing said zipper strips to said body;
• and
• forming a pilfer evident seal extending along the pull flanges and required to be destructively opened to gain access into said openable top which is thereafter reclosable by said zipper means.

A method of making a bag structure having a thin web body with wall panels providing an openable top portion flanked by opposed upwardly projecting pull flange portions, and extruded plastic zipper means carried by said body along said pull flange portions, and comprising:

• providing said body of one material and said zipper means from another material which is fusibly incompatible with the body material;
• providing said zipper means as a pair of extruded plastic strips having complementary separably interlockable zipper profiles located substantially below upper ends of said pull flanges portions;
• providing said plastic zipper strips with base socket parts defining respective sockets extending therealong and receiving anchorage structures of said pull flange portions in said sockets;
• providing anchor holes in said anchorage structures at predetermined intervals along the sockets;
• providing anchors extending from said zipper strip socket parts into said anchor holes and thereby permanently securing said zipper strips to said pull flange portions;
• and
• effecting extension of one of said pull flange portion or said socket part in each instance substantially beyond the other of said flange portion or said socket part and thereby providing digital grasping area of a length adapted for providing a pilfer evident seal when sealed together.