A zipper storage bag or slider storage bag is an inexpensive flexible rectangular storage bag, usually mainly transparent, made of PVC or similar plastic, which can be sealed and opened many times by a slider which works in a similar way to a zip fastener. The bags are made in many sizes; a typical small size is 1.5 by 2.5 inches (3.8 cm × 6.3 cm) suitable for a few buttons, a large size is 9 by 12 inches (23 cm × 30 cm). Material thickness (gauge) varies; smaller bags are typically 40 to 45 µm.
Many such bags are of food grade, suitable for foodstuffs such as sandwiches, and freezer storage. Single and multiple small items for sale are often packed in small zipper bags for convenience and visibility.
The bag was patented by Robert W. Vergobbi on May 18, 1954. In the same year, Minigrip licensed them as pencil bags. The zipper storage bag's most recognized function was not realized until 1957, when a fifth-grader named Robert Lejeune demonstrated that the bag could also be used safely as a food storage device. Eleven years later, in 1968, Dow Chemical Company began marketing them under the name Ziploc.
Famous quotes containing the words bag and/or storage:
“I see every thing I paint in this world, but everybody does not see alike. To the eyes of a miser a guinea is more beautiful than the sun, and a bag worn with the use of money has more beautiful proportions than a vine filled with grapes.”
—William Blake (17571827)
“Many of our houses, both public and private, with their almost innumerable apartments, their huge halls and their cellars for the storage of wines and other munitions of peace, appear to me extravagantly large for their inhabitants. They are so vast and magnificent that the latter seem to be only vermin which infest them.”
—Henry David Thoreau (18171862)