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A rubber band (in some regions known as a binder, elastic band, lackey band, "laggy band" or gumband) is a short length of rubber and latex formed in the shape of a loop. Such bands are typically used to hold multiple objects together. The rubber band was patented in Australia on March 17, 1845 by Stephen Perry. Rubber band may mean: Rubber band, a common household item Rubberband, a comedy serial in Pakistan Bootsys Rubber Band, a P-Funk spinoff group formed in 1976 and led by Bootsy Collins Rubber Band (song), a single by David Bowie Category: ...
Image File history File links Download high resolution version (1007x910, 73 KB) Elástico. ...
Image File history File links Download high resolution version (1007x910, 73 KB) Elástico. ...
This article is about the polymeric material. ...
This article is about the typesetting system. ...
is the 76th day of the year (77th in leap years) in the Gregorian calendar. ...
1845 was a common year starting on Wednesday (see link for calendar). ...
This article or section does not cite any references or sources. ...
Manufacturing
The manufacturing process involves extruding the rubber into a long tube to provide its general shape, putting the tubes on mandrels and curing the rubber with heat, and then slicing it along the width of the tube into little bands.[1][2] While other rubber products may use synthetic rubber, rubber bands are still primarily manufactured using natural rubber because of its superior elasticity. A right circular cylinder An elliptic cylinder In mathematics, a cylinder is a quadric surface, with the following equation in Cartesian coordinates: This equation is for an elliptic cylinder, a generalization of the ordinary, circular cylinder (a = b). ...
Synthetic rubber is any type of artificially made polymer material which acts as an elastomer. ...
Rubber is an elastic hydrocarbon polymer which occurs as a milky emulsion (known as latex) in the sap of a number of plants but can also be produced synthetically. ...
Rubber Band Sizes
Measuring A rubber band has three basic dimensions: Length, width, and thickness. (See picture.) Image File history File linksMetadata No higher resolution available. ...
Image File history File linksMetadata No higher resolution available. ...
For other uses, see Dimension (disambiguation). ...
For other uses of this word, see Length (disambiguation). ...
In general English usage, length (symbol: l) is but one particular instance of distance – an objects length is how long the object is – but in the physical sciences and engineering, the word length is in some contexts used synonymously with distance. Height is vertical distance; width (or breadth) is...
Graph theory is a growth area in mathematical research, and has a large specialized vocabulary. ...
A rubber band's length is half its circumference. Its thickness is the distance from the inner circle to the outer circle. The circumference is the distance around a closed curve. ...
Lay a rubber band down so that it makes a square. The band's width is the height of that band. If one imagines a rubber band in manufacture, that is, a long tube of rubber on a mandrel, before it is sliced into rubber bands, the band's width is how far apart the slices are cut. For other uses, see Square. ...
Rubber Band Size Numbers A rubber band is given a [quasi-]standard number based on its dimensions.
Generally, rubber bands are numbered from small to large, width first. Thus, rubber bands numbered 8-19 are all 1/16 inches wide, with length going from 7/8 inches to 3 1/2 inches. Rubber band numbers 30-34 are for width of 1/8 inches, going again from shorter to longer. For even longer bands, the numbering starts over for numbers above 100, again starting at width 1/16 inches. An inch (plural: inches; symbol or abbreviation: in or, sometimes, ″ - a double prime) is the name of a unit of length in a number of different systems, including English units, Imperial units, and United States customary units. ...
The origin of these size numbers is not clear and there appears to be some conflict in the "standard" numbers. For example, one distributor[3] has a size 117 being 1/16 inch wide and a size 127 being 1/8 inch wide. However, an OfficeMax size 117[4] is 1/8 inch wide. A manufacturer[5] has a size 117A (1/16 inch wide) and a 117B (1/8 inch wide). Another distributor[6] calls them 7AA (1/16 inch wide) and 7A (1/8 inch wide) (but labels them as specialty bands).
| Rubber Band Sizes | | Size | Length (in) | Width (in) | Thickness (in) | | 10 | 1.25 | 1/16 | 1/32 | | 12 | 1.75 | 1/16 | 1/32 | | 14 | 2 | 1/16 | 1/32 | | 31 | 2.5 | 1/8 | 1/32 | | 32 | 3 | 1/8 | 1/32 | | 33 | 3.5 | 1/8 | 1/32 | | 61 | 2 | 1/4 | 1/32 | | 62 | 2.5 | 1/4 | 1/32 | | 63 | 3 | 1/4 | 1/32 | | 64 | 3.5 | 1/4 | 1/32 | | 117 | 7 | 1/16 | 1/32 |
References - ^ How rubber bands are made. This reference states that the rubber is vulcanized before it is extruded.
- ^ Lee Rubber Products, How rubber bands are made. This reference states that the rubber is vulcanized after it is extruded.
- ^ BigWig Enterprises, BigWig Size Chart
- ^ OfficeMax, #OM97352, UPC 011491-973520
- ^ Lee Rubber Products, How do rubber bands measure up?
- ^ Dykema Rubber Band
Rubber bands and heat - http://scifun.chem.wisc.edu/HOMEEXPTS/rubberband.html
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