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The first paper shredder is credited to inventor Abbot Augustus Low, whose patent was filed on February 2, 1909. [1] His invention was never manufactured because he died prematurely soon after filing the patent. [2] Adolf Ehinger's paper shredder, based on a hand-crank pasta maker, was the first to be
Precious Plastic is an open hardware plastic recycling project and is a type of open source digital commons project. [12] It relies on a series of machines and tools which grind, melt, and inject recycled plastic, allowing for the creation of new products out of recycled plastic on a small scale. [13]
A common post-extrusion process for plastic sheet stock is thermoforming, where the sheet is heated until soft (plastic), and formed via a mold into a new shape. When vacuum is used, this is often described as vacuum forming. Orientation (i.e. ability/ available density of the sheet to be drawn to the mold which can vary in depths from 1 to 36 ...
These shredder designs can be high speed, medium speed and sometimes slow-speed systems, they always include hammermills of a vertical and horizontal shaft design, and can also include in contrast to hammer mills slow speed technology which are also used to process or shred metal and plastic and other waste materials encountered in the scrap ...
Example of a void pantograph pattern before (left) and after (right) the document has been photocopied. In security printing, void pantograph refers to a method of making copy-evident and tamper-resistant patterns in the background of a document.
The larger circular clear black area represents the larger outer side of the thick one-piece plastic cone "window". Being transparent and durable, PMMA is a versatile material and has been used in a wide range of fields and applications such as rear-lights and instrument clusters for vehicles, appliances, and lenses for glasses.
Henry Jamison "Jam" Handy (March 6, 1886 – November 13, 1983) was an American Olympic breaststroke swimmer, water polo player, and founder of the Jam Handy Organization (JHO), a producer of commercially sponsored motion pictures, slidefilms (later known as filmstrips), trade shows, industrial theater and multimedia training aids. [1]