Ziplock bags
A zipper bag is a bag made of plastic with a sealing strip made of two interlocking profiles at the filling opening with which the bag can be almost hermetically closed. The bag can be easily opened and closed again, making it reusable.
The locking mechanism was patented in 1954.
A similar closure principle is used for zip- lock bags .
Web links
Commons : Ziplock Bags - Collection of Images, Videos, and Audio Files
Individual evidence
- ↑ Utility model G 78 17 084.0: Device for manufacturing plastic bags with snap-button-like closure strips
- ↑ Patent P 21 63 930.5: Process and device for the continuous production of films provided with closure ribs, suitable for the production of bags
- ↑ Patent US 2666466 A: Pouch with sliderless fastener closure