A bread clip is a device used to hold plastic bags closed, such as those in which
sliced bread
Sliced bread is a loaf of bread that has been sliced with a machine and packaged for convenience, as opposed to the consumer cutting it with a knife. It was first sold in 1928, advertised as "the greatest forward step in the baking industry si ...
is commonly packaged. They are also commonly called bread tags, bread tabs, bread ties, bread buckles, or bread-bag clips. By sealing a bag more securely than tying or folding over its open end, the clip or tie may preserve the bag's contents longer.In some cases, the color of the tag indicates the day on which it was baked, although there is no universal standard for the color code.
Designs
Simple
Most designs of bread clip consist of a single plastic part through which the neck of a plastic bag can be threaded. Because these clips are cheap, ubiquitous, and come in a variety of shapes and colors, some people collect them.
Most bread clips are made from plastic #6
polystyrene
Polystyrene (PS) is a synthetic polymer made from monomers of the aromatic hydrocarbon styrene. Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is a ...
(PS), but KLR Systems also makes cardboard bread clips.
Such clips are also used for
bagged milk. In
Ontario
Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Ca ...
,
Quebec
Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...
,
New Brunswick
New Brunswick (french: Nouveau-Brunswick, , locally ) is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. It is the only province with both English and ...
, and
Nova Scotia, Canada
Nova Scotia ( ; ; ) is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. Nova Scotia is Latin for "New Scotland".
Most of the population are native Engl ...
, the most common package is 4 litres—three 1.33-litre sealed bags in a larger bag, which is closed with a clip and imprinted with the milk's expected
expiration date
An expiration date or expiry date is a previously determined date after which something should no longer be used, either by operation of law or by exceeding the anticipated shelf life for perishable goods. Expiration dates are applied to selecte ...
.
Mechanical
A more complex bread clip design involves two articulated plastic parts mounted on a pivot with a spring between them to provide tension.
History
The bread clip was invented by
Floyd G. Paxton and manufactured by the Kwik Lok Corporation, based in
Yakima, Washington
Yakima ( or ) is a city in and the county seat of Yakima County, Washington, and the state's 11th-largest city by population. As of the 2020 census, the city had a total population of 96,968 and a metropolitan population of 256,728. The uninco ...
with manufacturing plants in Yakima and
New Haven, Indiana
New Haven is a city in Adams, Jefferson, and St. Joseph townships, Allen County, Indiana, United States. It sits to the east of the city of Fort Wayne, the second largest city in Indiana, and is situated mostly along the southern banks of the Maum ...
. Kwik Lok Corporation's clips are called "Kwik Lok closures".
Paxton was known for repeatedly telling the story about how he came up with the idea of the bread clip. As he told it, he was flying home on an airliner in 1952 and opened a bag of peanuts, whereupon he realized he had no way to reclose it. He rummaged through his wallet and found an expired credit card and hand-carved his first bag clip with a small pen knife. When a fruit packer, Pacific Fruit, wanted to replace rubber bands with a better bag closure for its new plastic bags, Paxton remembered his bag of peanuts. He hand-whittled another clip from a small sheet of
Plexiglas
Poly(methyl methacrylate) (PMMA) belongs to a group of materials called engineering plastics. It is a transparent thermoplastic. PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Plexiglas, Acrylite, ...
. With an order in hand for a million clips, Paxton designed a die-cut machine to produce the clips at high speed. Despite repeated attempts, Paxton never won a United States patent for his clips. He did win numerous patents for the high-speed "bag closing apparatus" that made the clips, inserted bread into bags and applied the clips for the finished product.
The bread clip was developed in the early 1950s for a growing need to close
plastic bags
A plastic bag, poly bag, or pouch is a type of container made of thin, flexible, plastic film, nonwoven fabric, or plastic textile. Plastic bags are used for containing and transporting goods such as foods, produce, powders, ice, magazines, c ...
on the
packaging
Packaging is the science, art and technology of enclosing or protecting products for distribution, storage, sale, and use. Packaging also refers to the process of designing, evaluating, and producing packages. Packaging can be described as a co ...
line very efficiently. Manufacturers, using more and more
automation
Automation describes a wide range of technologies that reduce human intervention in processes, namely by predetermining decision criteria, subprocess relationships, and related actions, as well as embodying those predeterminations in machines ...
in the manufacture and packaging of food, needed methods to raise production volumes and reduce costs. At the same time a hurried population of consumers wanted a fast and easy way to open and effectively
seal
Seal may refer to any of the following:
Common uses
* Pinniped, a diverse group of semi-aquatic marine mammals, many of which are commonly called seals, particularly:
** Earless seal, or "true seal"
** Fur seal
* Seal (emblem), a device to impr ...
food bags. The simple bread clip sufficed. In addition, re-closability became a selling point as smaller families and higher costs slowed consumption, leading to a potential for higher rates of
spoilage.
Kwik Lok continues to be the main manufacturer of bread clips with Schutte as their European competitor.
Parody in media
The parody website horg.com, created by John Daniel, coined the term "occlupanids" to describe bread clips, and created a mock
phylogeny
A phylogenetic tree (also phylogeny or evolutionary tree Felsenstein J. (2004). ''Inferring Phylogenies'' Sinauer Associates: Sunderland, MA.) is a branching diagram or a tree showing the evolutionary relationships among various biological spec ...
of the different clip designs. This term has since been referenced in popular media.
Health risks - inhalation and ingestion
Case studies in the medical literature document instances of inhalation and ingestion.
References
Notes
Citations
{{DEFAULTSORT:Bread Clip
Fasteners
American inventions
Yakima, Washington