85-464: A lunch box (or lunchbox ) is a hand-held container used to transport food, usually to work or to school. It is commonly made of metal or plastic, is reasonably airtight and often has a handle for carrying. In the United States a lunchbox may also be termed a lunch pail , lunch bucket , or lunch tin , either as one or two words. The concept of a food container has existed for a long time, but it
170-412: A "Materia Nova", "expressive of our own age". By the 1930s, Bakelite was used for game pieces like chess pieces , poker chips , dominoes , and mahjong sets. Kitchenware made with Bakelite, including canisters and tableware, was promoted for its resistance to heat and to chipping. In the mid-1930s, Northland marketed a line of skis with a black "Ebonite" base, a coating of Bakelite. By 1935, it
255-404: A CTP ( computer-to-plate ) device known as a platesetter. The positive image is the emulsion that remains after imaging. Non-image portions of the emulsion have traditionally been removed by a chemical process, though in recent times, plates have become available that do not require such processing. The plate is affixed to a cylinder on a printing press. Dampening rollers apply water, which covers
340-655: A Thermos, initially made of metal and glass, and later plastic. Lunch boxes have been manufactured using various materials. Typically, children's school lunch boxes are made of plastic or vinyl , while adult workers' lunch boxes are commonly made of metal, such as tin or aluminium , due to the greater need for durability. The aluminium variant was invented in 1954 by Leo May, a miner in Sudbury , Ontario , after he accidentally crushed his tin lunch box. Manufacturers grew to include ADCO Liberty, Kruger Manufacturing Company, Landers, Frary and Clark (Universal), Okay Industries, and
425-426: A brushed or roughened texture and are covered with a photosensitive emulsion . A photographic negative of the desired image is placed in contact with the emulsion and the plate is exposed to ultraviolet light . After development, the emulsion shows a reverse of the negative image, which is thus a duplicate of the original (positive) image. The image on the plate emulsion can also be created by direct laser imaging in
510-531: A center, and some of Géricault's prints were in fact produced there. Goya in Bordeaux produced his last series of prints by lithography— The Bulls of Bordeaux of 1828. By the mid-century the initial enthusiasm had somewhat diminished in both countries, although the use of lithography was increasingly favored for commercial applications, which included the prints of Daumier , published in newspapers. Rodolphe Bresdin and Jean-François Millet also continued to practice
595-550: A colorful image that can either be generic or based on children's television shows or films. Use of lithographed metal to produce lunch boxes in the 1950s, 1960s, 1970s and 1980s gave way in the 1990s to use of injection-molded plastic . A lunch kit comprises the actual "box" and a matching vacuum bottle. However, popular culture has more often embraced the singular term lunch box, which is now most commonly used. With increasing industrialization resulting in Americans working outside
680-433: A common component of the lunch box. In 1920, The American Thermos Bottle Co. produced "the first metal lunch box for kids" to aid selling their vacuum bottles. The first lunch box decorated with a famous licensed character was introduced in 1935. Produced by Geuder, Paeschke & Frey, it featured Mickey Mouse , and was a four-color lithographed oval tin, with a pull-out tray inside. It had no vacuum bottle, but did have
765-625: A handle. In 1950, Aladdin Industries created the first children's lunch box based on a television show, Hopalong Cassidy . The Hopalong Cassidy lunch kit, or "Hoppy", quickly became Aladdin's cash cow. Debuting in time for back-to-school 1950, it would go on to sell 600,000 units in its first year alone, each at US$ 2.39. In 1953, Roy Rogers and Dale Evans were featured on models introduced by American Thermos. Over 450 decorated models quickly followed, and more than 120 million metal lunch boxes were sold between 1950 and 1970, often accompanied by
850-487: A meeting of the American Chemical Society on February 5, 1909. Baekeland started semi-commercial production of his new material in his home laboratory, marketing it as a material for electrical insulators. In the summer of 1909, he licensed the continental European rights to Rütger AG. The subsidiary formed at that time, Bakelite AG, was the first to produce Bakelite on an industrial scale. By 1910, Baekeland
935-473: A number of other food items, transported within a lunchbox that has compartments to keep each item separate. In Mumbai , India , there are extensive lunchbox delivery services, continuing a business model that originated in 1890, where delivery staff called dabawallas pick up metal tiffin carrier lunchboxes containing freshly cooked food, usually from the recipient's home, deliver them to people at their place of work and return empty lunchboxes. In Korea,
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#17328525254851020-406: A number of other producers through the 1980s. The first use of plastics was the lunch box handle, but later spread to the entire box, with the first molded plastic boxes produced during the 1960s. Vinyl lunch boxes debuted in 1959. During the 1960s, the lunch box had few changes. The vacuum bottle included in them, however, steadily evolved during the course of the decade and into the 1970s. What
1105-415: A printing technology, lithography is different from intaglio printing (gravure), wherein a plate is engraved , etched , or stippled to score cavities to contain the printing ink; and woodblock printing or letterpress printing , wherein ink is applied to the raised surfaces of letters or images. Lithography uses simple chemical processes to create an image. For instance, the positive part of an image
1190-521: A rubber blanket , which squeezes away the water, picks up the ink and transfers it to the paper with uniform pressure. The paper passes between the blanket cylinder and a counter-pressure or impression cylinder and the image is transferred to the paper. Because the image is first transferred, or offset to the rubber blanket cylinder, this reproduction method is known as offset lithography or offset printing . Many innovations and technical refinements have been made in printing processes and presses over
1275-414: A similar material fakelite (fake bakelite) exists made from modern safer materials which do not contain asbestos . The United States Patent and Trademark Office granted Baekeland a patent for a "Method of making insoluble products of phenol and formaldehyde" on December 7, 1909. Producing hard, compact, insoluble, and infusible condensation products of phenols and formaldehyde marked the beginning of
1360-405: A synthetic plastic was revolutionary for the chemical industry, which at the time made most of its income from cloth dyes and explosives. Bakelite's commercial success inspired the industry to develop other synthetic plastics. As the world's first commercial synthetic plastic , Bakelite was named a National Historic Chemical Landmark by the American Chemical Society . Bakelite was produced for
1445-401: A synthetic resin rather than coating it. By controlling the pressure and temperature applied to phenol and formaldehyde , he produced a hard moldable material that he named Bakelite, after himself. It was the first synthetic thermosetting plastic produced, and Baekeland speculated on "the thousand and one ... articles" it could be used to make. He considered the possibilities of using
1530-582: A varnish, and a protective coating, as well as for the emerging electrical and automobile industries because of its extraordinarily high resistance to electricity, heat, and chemical action. The earliest commercial use of Bakelite in the electrical industry was the molding of tiny insulating bushings, made in 1908 for the Weston Electrical Instrument Corporation by Richard W. Seabury of the Boonton Rubber Company. Bakelite
1615-613: A wide variety of filling materials, including cotton, powdered bronze, and slate dust, but was most successful with wood and asbestos fibers, though asbestos was gradually abandoned by all manufacturers due to stricter environmental laws. Baekeland filed a substantial number of related patents. Bakelite, his "method of making insoluble products of phenol and formaldehyde", was filed on July 13, 1907, and granted on December 7, 1909. He also filed for patent protection in other countries, including Belgium, Canada, Denmark, Hungary, Japan, Mexico, Russia, and Spain. He announced his invention at
1700-483: Is a planographic method of printing originally based on the immiscibility of oil and water. The printing is from a stone ( lithographic limestone ) or a metal plate with a smooth surface. It was invented in 1796 by the German author and actor Alois Senefelder and was initially used mostly for musical scores and maps. Lithography can be used to print text or images onto paper or other suitable material. A lithograph
1785-488: Is a water-repelling (" hydrophobic ") substance, while the negative image would be water-retaining ("hydrophilic"). Thus, when the plate is introduced to a compatible printing ink and water mixture, the ink will adhere to the positive image and the water will clean the negative image. This allows a flat print plate to be used, enabling much longer and more detailed print runs than the older physical methods of printing (e.g., intaglio printing, letterpress printing). Lithography
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#17328525254851870-514: Is also called an ink pyramid because the ink is transferred through several layers of rollers with different purposes. Fast lithographic 'web' printing presses are commonly used in newspaper production. The advent of desktop publishing made it possible for type and images to be modified easily on personal computers for eventual printing by desktop or commercial presses. The development of digital imagesetters enabled print shops to produce negatives for platemaking directly from digital input, skipping
1955-403: Is also resistant to electricity, and prized for its low conductivity. It is not flexible. Phenolic resin products may swell slightly under conditions of extreme humidity or perpetual dampness. When rubbed or burnt, Bakelite has a distinctive, acrid, sickly-sweet or fishy odor. The characteristics of Bakelite made it particularly suitable as a molding compound, an adhesive or binding agent,
2040-409: Is also used in the mounting of metal samples in metallography . Bakelite items, particularly jewelry and radios, have become popular collectibles. The term Bakelite is sometimes used in the resale market as a catch-all for various types of early plastics, including Catalin and Faturan , which may be brightly colored, as well as items made of true Bakelite material. Due to its aesthetics,
2125-514: Is an elaboration of lithography in which the ink is transferred from the plate to the paper indirectly by means of a rubber plate or cylinder, rather than by direct contact. This technique keeps the paper dry and allows fully automated high-speed operation. It has mostly replaced traditional lithography for medium- and high-volume printing: since the 1960s, most books and magazines, especially when illustrated in colour, are printed with offset lithography from photographically created metal plates. As
2210-441: Is something printed by lithography, but this term is only used for fine art prints and some other, mostly older, types of printed matter, not for those made by modern commercial lithography. Originally, the image to be printed was drawn with a greasy substance, such as oil, fat, or wax onto the surface of a smooth and flat limestone plate. The stone was then treated with a mixture of weak acid and gum arabic ("etch") that made
2295-402: Is still manufactured and produced in sheet, rod, and tube form for industrial applications in the electronics, power generation, and aerospace industries, and under a variety of commercial brand names. Phenolic resins have been commonly used in ablative heat shields. Soviet heatshields for ICBM warheads and spacecraft reentry consisted of asbestos textolite, impregnated with Bakelite. Bakelite
2380-482: Is still used for fine art printmaking. In modern commercial lithography, the image is transferred or created as a patterned polymer coating applied to a flexible plastic or metal plate. The printing plates, made of stone or metal, can be created by a photographic process, a method that may be referred to as "photolithography" (although the term usually refers to a vaguely similar microelectronics manufacturing process ). Offset printing or "offset lithography"
2465-415: Is still used on older presses, using rollers covered with molleton (cloth) that absorbs the water. This increased control of the water flow to the plate and allowed for better ink and water balance. Recent dampening systems include a "delta effect or vario", which slows the roller in contact with the plate, thus creating a sweeping movement over the ink image to clean impurities known as "hickies". This press
2550-555: The Catalin company, through a different process which enabled them to introduce 15 new colors. Translucent jewelry, poker chips and other items made of phenolic resins were introduced in the 1930s or 1940s by the Catalin company under the Prystal name. The creation of marbled phenolic resins may also be attributable to the Catalin company. Making Bakelite is a multi-stage process. It begins with
2635-411: The 1950s and 1960s, sometimes sell into the thousands of dollars. In 1999, a "1954 Superman lunch box, made by Adco Liberty" was "gaveled down for $ 11,500" ("the highest auction price ever paid for a lunch box"). In the United States, the lunch box or lunch pail has been used as a symbol of the working class . The phrase " lunch pail Democrat " is used to classify populist politicians who attempt to gain
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2720-496: The 19th century, were woven baskets with handles. A meal would be wrapped in a handkerchief. Depending on your station, a fancy wooden box would be used by the wealthy." Tinplate boxes and recycled biscuit tins commonly were used in the early 1800s, and fitted metal pails and boxes began to appear around the 1850s. Patents started to appear for lunchbox inventions in the 1860s. Vacuum bottles , which enabled hot or cold beverages to remain at optimal temperature until lunchtime, became
2805-580: The Army and black buttons for the RAF . In 1947, Dutch art forger Han van Meegeren was convicted of forgery, after chemist and curator Paul B. Coremans proved that a purported Vermeer contained Bakelite, which van Meegeren had used as a paint hardener. Bakelite was sometimes used in the pistol grip, hand guard, and buttstock of firearms. The AKM and some early AK-74 rifles are frequently mistakenly identified as using Bakelite, but most were made with AG-4S . By
2890-593: The United States banned metal lunch boxes. One of the last metal lunchboxes to be widely produced was one with a design promoting Rambo: First Blood Part II . Health concerns came to light in August 2002, when the Center for Environmental Health discovered that many popular vinyl lunch boxes contained dangerous levels of lead. Although not all were removed, many were pulled from the shelves. In 2001, most major manufacturers began testing their lunch boxes for lead levels, remedying
2975-657: The area of inexpensive board and tabletop games produced in China, Hong Kong, and India. Items such as billiard balls, dominoes and pieces for board games such as chess, checkers, and backgammon are constructed of Bakelite for its look, durability, fine polish, weight, and sound. Common dice are sometimes made of Bakelite for weight and sound, but the majority are made of a thermoplastic polymer such as acrylonitrile butadiene styrene (ABS). Bakelite continues to be used for wire insulation, brake pads and related automotive components, and industrial electrical-related applications. Bakelite stock
3060-599: The article "Bakelite – What It Is" by Allan Brown. The range of colors that were available included "black, brown, red, yellow, green, gray, blue, and blends of two or more of these". The article emphasized that Bakelite came in various forms. Bakelite is manufactured in several forms to suit varying requirements. In all these forms the fundamental basis is the initial Bakelite resin. This variety includes clear material, for jewelry, smokers' articles, etc.; cement, for sealing electric light bulbs in metal bases; varnishes, for impregnating electric coils, etc.; lacquers, for protecting
3145-440: The artist. The serilith technique is used primarily to create fine art limited print editions. Bakelite Bakelite ( / ˈ b eɪ k ə l aɪ t / BAY -kə-lyte ), formally polyoxybenzylmethyleneglycolanhydride , is a thermosetting phenol formaldehyde resin , formed from a condensation reaction of phenol with formaldehyde . The first plastic made from synthetic components, it
3230-513: The artists' work. Grant Wood , George Bellows , Alphonse Mucha , Max Kahn , Pablo Picasso , Eleanor Coen , Jasper Johns , David Hockney , Susan Dorothea White , and Robert Rauschenberg are a few of the artists who have produced most of their prints in the medium. M. C. Escher is considered a master of lithography, and many of his prints were created using this process. More than other printmaking techniques, printmakers in lithography still largely depend on access to good printers , and
3315-402: The blank portions of the plate but is repelled by the emulsion of the image area. Hydrophobic ink, which is repelled by the water and only adheres to the emulsion of the image area, is then applied by the inking rollers. If this image were transferred directly to paper, it would create a mirror-type image and the paper would become too wet. Instead, the plate rolls against a cylinder covered with
3400-457: The commercial manufacture of synthetic phenolic resin as "distinctly an American achievement", and noted that "the publication of figures, however, would be a virtual disclosure of the production of an individual company". In England, Bakelite Limited, a merger of three British phenol formaldehyde resin suppliers (Damard Lacquer Company Limited of Birmingham , Mouldensite Limited of Darley Dale and Redmanol Chemical Products Company of London ),
3485-652: The demand for molded plastics led the company to concentrate on molding rather than cast solid resins. The Bakelite Corporation was formed in 1922 after patent litigation favorable to Baekeland, from a merger of three companies: Baekeland's General Bakelite Company; the Condensite Company, founded by J. W. Aylesworth; and the Redmanol Chemical Products Company , founded by Lawrence V. Redman . Under director of advertising and public relations Allan Brown, who came to Bakelite from Condensite, Bakelite
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3570-655: The development of the medium has been greatly influenced by when and where these have been established. An American scene for lithography was founded by Robert Blackburn in New York City. As a special form of lithography, the serilith or seriolithograph process is sometimes used. Seriliths are mixed-media original prints created in a process in which an artist uses the lithograph and serigraph (screen printing). Fine art prints of this type are published by artists and publishers worldwide, and are widely accepted and collected. The separations for both processes are hand-drawn by
3655-487: The durability of the image on the stone depends on the lipid content of the material being used, and its ability to withstand water and acid. After the drawing of the image, an aqueous solution of gum arabic , weakly acidified with nitric acid ( HNO 3 ) is applied to the stone. The function of this solution is to create a hydrophilic layer of calcium nitrate salt, Ca(NO 3 ) 2 , and gum arabic on all non-image surfaces. The gum solution penetrates into
3740-514: The first half of the 20th century. Beginning in the 1920s, it became a popular material for jewelry. Designer Coco Chanel included Bakelite bracelets in her costume jewelry collections. Designers such as Elsa Schiaparelli used it for jewelry and also for specially designed dress buttons. Later, Diana Vreeland , editor of Vogue , was enthusiastic about Bakelite. Bakelite was also used to make presentation boxes for Breitling watches. By 1930, designer Paul T. Frankl considered Bakelite
3825-416: The first time in 1872 by Adolf von Baeyer , though its use as a commercial product was not considered at the time. Leo Baekeland was already wealthy due to his invention of Velox photographic paper when he began to investigate the reactions of phenol and formaldehyde in his home laboratory. Chemists had begun to recognize that many natural resins and fibers were polymers . Baekeland's initial intent
3910-433: The foaming that would otherwise occur. The resulting substance is extremely hard and both infusible and insoluble. Molded Bakelite forms in a condensation reaction of phenol and formaldehyde, with wood flour or asbestos fiber as a filler, under high pressure and heat in a time frame of a few minutes of curing . The result is a hard plastic material. Asbestos was gradually abandoned as filler because many countries banned
3995-410: The gum arabic surfaces and was repelled by the oily parts, while the oily ink used for printing did the opposite. Lithography works because of the mutual repulsion of oil and water . The image is drawn on the surface of the print plate with a fat or oil-based medium (hydrophobic) such as a wax crayon , which may be pigmented to make the drawing visible. A wide range of oil-based media is available, but
4080-418: The heating of phenol and formaldehyde in the presence of a catalyst such as hydrochloric acid, zinc chloride , or the base ammonia. This creates a liquid condensation product, referred to as Bakelite A , which is soluble in alcohol, acetone, or additional phenol. Heated further, the product becomes partially soluble and can still be softened by heat. Sustained heating results in an "insoluble hard gum". However,
4165-399: The high temperatures required to create this tend to cause violent foaming of the mixture when done at standard atmospheric pressure, which results in the cooled material being porous and breakable. Baekeland's innovative step was to put his "last condensation product" into an egg-shaped "Bakelizer". By heating it under pressure, at about 150 °C (302 °F), Baekeland was able to suppress
4250-529: The home in factories, it became unfeasible to go home to lunch every day, thus it was necessary to have something to protect and transport a meal. Since the 19th century, American industrial workers have used sturdy containers to hold hardy lunches, consisting of foods such as hard-boiled eggs, vegetables, meat, coffee, and pie. David Shayt, curator of the Smithsonian National Museum of American History , states that "Some of our earliest examples, from
4335-449: The intermediate step of photographing an actual page layout. The development of the digital platesetter during the late 20th century eliminated film negatives altogether by exposing printing plates directly from digital input, a process known as computer-to-plate printing. During the early years of the 19th century, lithography had only a limited effect on printmaking , mainly because technical difficulties remained to be overcome. Germany
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#17328525254854420-407: The issue, and labeling their boxes as lead-free. Today, lunch boxes are generally made of plastic with foam insulation and an aluminium/ vinyl interior. As a result, they usually retain temperature better but are less rigid and protective. However, metal lunch boxes are still produced, though they are not as popular as they were in the 1960s through 1980s. Some lunch boxes, including those from
4505-492: The late 1940s, newer materials were superseding Bakelite in many areas. Phenolics are less frequently used in general consumer products today due to their cost and complexity of production and their brittle nature. They still appear in some applications where their specific properties are required, such as small precision-shaped components, molded disc brake cylinders, saucepan handles, electrical plugs, switches and parts for electrical irons, printed circuit boards , as well as in
4590-463: The layers into thermosetting industrial laminated plastic. Bakelite phenolic sheet is produced in many commercial grades and with various additives to meet diverse mechanical, electrical, and thermal requirements. Some common types include: Bakelite has a number of important properties. It can be molded very quickly, decreasing production time. Moldings are smooth, retain their shape, and are resistant to heat, scratches, and destructive solvents. It
4675-537: The medium in France, and Adolph Menzel in Germany. In 1862 the publisher Cadart tried to initiate a portfolio of lithographs by various artists, which was not successful but included several prints by Manet . The revival began during the 1870s, especially in France with artists such as Odilon Redon , Henri Fantin-Latour and Degas producing much of their work in this manner. The need for strictly limited editions to maintain
4760-442: The parts of the stone's surface that were not protected by the grease more hydrophilic (water attracting). For printing, the stone was first moistened. The water adhered only to the gum-treated parts, making them even more oil-repellant. An oil-based ink was then applied, and would stick only to the original drawing. The ink would finally be transferred to a blank sheet of paper , producing a printed page. This traditional technique
4845-410: The pores of the stone, completely surrounding the original image with a hydrophilic layer that will not accept the printing ink. Using lithographic turpentine , the printer then removes any excess of the greasy drawing material, but a hydrophobic molecular film of it remains tightly bonded to the surface of the stone, rejecting the gum arabic and water, but ready to accept the oily ink. When printing,
4930-417: The price had now been realized, and the medium became more accepted. In the 1890s, color lithography gained success in part by the emergence of Jules Chéret , known as the father of the modern poster , whose work went on to inspire a new generation of poster designers and painters, most notably Toulouse-Lautrec , and former student of Chéret, Georges de Feure . By 1900 the medium in both color and monotone
5015-496: The printing of wallpaper; but it was transformed when the founder's grandson, Fernand Mourlot , invited a number of 20th-century artists to explore the complexities of fine art printing. Mourlot encouraged the painters to work directly on lithographic stones in order to create original artworks that could then be executed under the direction of master printers in small editions. The combination of modern artist and master printer resulted in lithographs that were used as posters to promote
5100-429: The production of asbestos. Bakelite's molding process had a number of advantages. Bakelite resin could be provided either as powder or as preformed partially cured slugs, increasing the speed of the casting. Thermosetting resins such as Bakelite required heat and pressure during the molding cycle but could be removed from the molding process without being cooled, again making the molding process faster. Also, because of
5185-481: The similar concept is known as dosirak . In some South American countries, a lunch box is called " lonchera ", especially among school children, in assimilation of the English word "lunch". [REDACTED] Media related to Lunch boxes at Wikimedia Commons Lithography Lithography (from Ancient Greek λίθος ( líthos ) 'stone' and γράφω ( gráphō ) 'to write')
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#17328525254855270-575: The smooth polished surface that resulted, Bakelite objects required less finishing. Millions of parts could be duplicated quickly and relatively cheaply. Another market for Bakelite resin was the creation of phenolic sheet materials. A phenolic sheet is a hard, dense material made by applying heat and pressure to layers of paper or glass cloth impregnated with synthetic resin. Paper, cotton fabrics, synthetic fabrics, glass fabrics, and unwoven fabrics are all possible materials used in lamination. When heat and pressure are applied, polymerization transforms
5355-495: The stone and paper are run through a press that applies even pressure over the surface, transferring the ink to the paper and off the stone. Senefelder had experimented during the early 19th century with multicolor lithography; in his 1819 book, he predicted that the process would eventually be perfected and used to reproduce paintings. Multi-color printing was introduced by a new process developed by Godefroy Engelmann (France) in 1837 known as chromolithography . A separate stone
5440-404: The stone is kept wet with water. The water is naturally attracted to the layer of gum and salt created by the acid wash. Printing ink based on drying oils such as linseed oil and varnish loaded with pigment is then rolled over the surface. The water repels the greasy ink but the hydrophobic areas left by the original drawing material accept it. When the hydrophobic image is loaded with ink,
5525-494: The surface of hardware; enamels, for giving resistive coating to industrial equipment; Laminated Bakelite, used for silent gears and insulation; and molding material, from which are formed innumerable articles of utility and beauty. The molding material is prepared ordinarily by the impregnation of cellulose substances with the initial "uncured" resin. In a 1925 report, the United States Tariff Commission hailed
5610-457: The votes of the working class. The New York Times printed in 2008 that Joe Biden is a lunch-bucket Democrat. While his father had been wealthy early in life, by the time Biden was born, the family was broke. Japan has a tradition of bento , individual portable meals, that dates back several centuries and influenced other countries in South East Asia. Bento generally consists of rice and
5695-409: The years, including the development of presses with multiple units (each containing one printing plate) that can print multi-color images in one pass on both sides of the sheet, and presses that accommodate continuous rolls ( webs ) of paper, known as web presses. Another innovation was the continuous dampening system first introduced by Dahlgren, instead of the old method (conventional dampening) which
5780-737: Was a quick, cheap process and had been used to print British army maps during the Peninsular War . Most of the commercial maps of the second half of the 19th century were lithographed and unattractive, though accurate enough." High-volume lithography is used to produce posters, maps, books, newspapers, and packaging—just about any smooth, mass-produced item with print and graphics on it. Most books, indeed all types of high-volume text, are printed using offset lithography. For offset lithography, which depends on photographic processes, flexible aluminum , polyester , mylar or paper printing plates are used instead of stone tablets. Modern printing plates have
5865-771: Was acquired by Borden Chemical of Columbus, Ohio, now Hexion Inc. In addition to the original Bakelite material, these companies eventually made a wide range of other products, many of which were marketed under the brand name "Bakelite plastics". These included other types of cast phenolic resins similar to Catalin , and urea-formaldehyde resins, which could be made in brighter colors than polyoxybenzylmethyleneglycolanhydride. Once Baekeland's heat and pressure patents expired in 1927, Bakelite Corporation faced serious competition from other companies. Because molded Bakelite incorporated fillers to give it strength, it tended to be made in concealing dark colors. In 1927, beads, bangles, and earrings were produced by
5950-412: Was aggressively marketed as "the material of a thousand uses". A filing for a trademark featuring the letter B above the mathematical symbol for infinity was made August 25, 1925, and claimed the mark was in use as of December 1, 1924. A wide variety of uses were listed in their trademark applications. The first issue of Plastics magazine, October 1925, featured Bakelite on its cover and included
6035-468: Was also very important to the developing automobile industry. It was soon found in myriad other consumer products ranging from pipe stems and buttons to saxophone mouthpieces, cameras, early machine guns, and appliance casings. Bakelite was also very commonly used in making molded grip panels on handguns, as furniture for submachine guns and machineguns, the classic Bakelite magazines for Kalashnikov rifles, as well as numerous knife handles and "scales" through
6120-515: Was an accepted part of printmaking. During the 20th century, a group of artists, including Braque , Calder , Chagall , Dufy , Léger , Matisse , Miró , and Picasso , rediscovered the largely undeveloped artform of lithography thanks to the Mourlot Studios , also known as Atelier Mourlot , a Parisian printshop founded in 1852 by the Mourlot family. The Atelier Mourlot originally specialized in
6205-693: Was developed by Leo Baekeland in Yonkers, New York , in 1907, and patented on December 7, 1909. Bakelite was one of the first plastic-like materials to be introduced into the modern world and was popular because it could be moulded and then hardened into any shape. Because of its electrical nonconductivity and heat-resistant properties, it became a great commercial success. It was used in electrical insulators , radio and telephone casings, and such diverse products as kitchenware, jewelry, pipe stems, children's toys, and firearms. The retro appeal of old Bakelite products has made them collectible. The creation of
6290-550: Was formed in 1926. A new Bakelite factory opened in Tyseley , Birmingham, around 1928. It was the "heart of Bakelite production in the UK" until it closed in 1987. A factory to produce phenolic resins and precursors opened in Bound Brook, New Jersey , in 1931. In 1939, the companies were acquired by Union Carbide and Carbon Corporation . In 2005, German Bakelite manufacturer Bakelite AG
6375-520: Was invented by Alois Senefelder in the Kingdom of Bavaria in 1796. In the early days of lithography, a smooth piece of limestone was used (hence the name "lithography": "lithos" ( λιθος ) is the Ancient Greek word for "stone"). After the oil-based image was put on the surface, a solution of gum arabic in water was applied, the gum sticking only to the non-oily surface. During printing, water adhered to
6460-407: Was not until people began using tobacco tins to carry meals in the early 20th century, followed by the use of lithographed images on metal, that the containers became a staple of youth, and a marketable product. It has most often been used by schoolchildren to take packed lunches , or a snack, from home to school. The most common modern form is a small case with a clasp and handle, often printed with
6545-463: Was originally a steel vacuum bottle with glass liner, cork or rubber stopper, and bakelite cup became an all- plastic bottle , with insulated foam rather than vacuum . Aladdin produced glass liners into the 1970s, but they were soon replaced with plastic. Beginning in Florida during the 1970s, with the lobbying of parents who claimed the metal boxes were being used as weapons in fights, many schools in
6630-691: Was producing enough material in the US to justify expansion. He formed the General Bakelite Company of Perth Amboy, New Jersey, as a U.S. company to manufacture and market his new industrial material, and made overseas connections to produce it in other countries. The Bakelite Company produced "transparent" cast resin (which did not include filler ) for a small market during the 1910s and 1920s. Blocks or rods of cast resin, also known as "artificial amber", were machined and carved to create items such as pipe stems , cigarette holders , and jewelry . However,
6715-421: Was soon used for non-conducting parts of telephones, radios, and other electrical devices, including bases and sockets for light bulbs and electron tubes (vacuum tubes), supports for any type of electrical components, automobile distributor caps, and other insulators. By 1912, it was being used to make billiard balls, since its elasticity and the sound it made were similar to ivory. During World War I, Bakelite
6800-666: Was the main center of production in this period. Godefroy Engelmann , who moved his press from Mulhouse to Paris in 1816, largely succeeded in resolving the technical problems, and during the 1820s lithography was adopted by artists such as Delacroix and Géricault . After early experiments such as Specimens of Polyautography (1803), which had experimental works by a number of British artists including Benjamin West , Henry Fuseli , James Barry , Thomas Barker of Bath , Thomas Stothard , Henry Richard Greville , Richard Cooper , Henry Singleton , and William Henry Pyne , London also became
6885-415: Was to find a replacement for shellac , a material in limited supply because it was made naturally from the secretion of lac insects (specifically Kerria lacca ). He produced a soluble phenol-formaldehyde shellac called Novolak , but it was not a market success, even though it is still used to this day (e.g., as a photoresist ). He then began experimenting on strengthening wood by impregnating it with
6970-444: Was used for each color, and a print went through the press separately for each stone. The main challenge was to keep the images aligned ( in register ). This method lent itself to images consisting of large areas of flat color, and resulted in the characteristic poster designs of this period. "Lithography, or printing from soft stone, largely took the place of engraving in the production of English commercial maps after about 1852. It
7055-403: Was used in solid-body electric guitars . Performers such as Jerry Byrd loved the tone of Bakelite guitars but found them difficult to keep in tune. Charles Plimpton patented BAYKO in 1933 and rushed out his first construction sets for Christmas 1934. He called the toy Bayko Light Constructional Sets , the words "Bayko Light" being a pun on the word "Bakelite". During World War II, Bakelite
7140-573: Was used in a variety of wartime equipment including pilots' goggles and field telephones. It was also used for patriotic wartime jewelry. In 1943, the thermosetting phenolic resin was even considered for the manufacture of coins, due to a shortage of traditional material. Bakelite and other non-metal materials were tested for usage for the one cent coin in the US before the Mint settled on zinc-coated steel . During World War II, Bakelite buttons were part of British uniforms. These included brown buttons for
7225-583: Was used widely, particularly in electrical systems. Important projects included the Liberty airplane engine , the wireless telephone and radio phone, and the use of micarta-bakelite propellers in the NBS-1 bomber and the DH-4B aeroplane . Bakelite's availability and ease and speed of molding helped to lower the costs and increase product availability so that telephones and radios became common household consumer goods. It
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