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1950s: From Zippers with Teeth, to Plastic Slider Zippers
The press to close zipper bags we know today evolved from inventor Borge Madsen’s attempt to create a new clothing zipper. Instead of teeth like we see on pants zippers, Madsen’s design used interlocking plastic tracks and a slider tab. These zippers (pictured in Madsen’s original patent, right) were innovative but impractical for clothing. It was only once Max Ausnit, and his son Steven Ausnit purchased Madsen’s patent that the zipper began to get traction as a consumer item.

The Ausnits formed Flexigrip Inc. and began to sell the zippers applied to flat vinyl pencil cases and loose leaf binder inserts. While these products were a far cry from the zip lock pouches and other resealable bags we see in grocery stores, they were the early beginnings of these items.

* IMPAK offers a pull tab zipper bag reminiscent of this early design. This item is popular for disaster preparedness and marketing materials: PM4141251025 14.125” X 10.25” CLEAR PULL TAB ZIPPER BAG

Didn't know they were invented that long ago.
 
Laughing Grass said:
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