Cellophane tape wiki
Viscose factories vary widely in the amount of CS2 they expose their workers to, and most give no information about their quantitative safety limits or how well they keep to them. 6 7 Branding edit In the uk and in many other countries, "cellophane" is a registered trademark and the property of Futamura Chemical uk ltd, based in Wigton, cumbria, united Kingdom. 8 In the us and some other countries "cellophane" has become genericized, and is often used informally to refer to a wide variety of plastic film products, even those not made of cellulose, 9 such as plastic wrap. See also edit references edit carraher, Charles. Carraher's Polymer Chemistry: Ninth Edition. Boca raton.: crc press, taylor francis Group. Scientific American Inventions and Discoveries,.338. John Wiley sons, Inc., new Jersey.
5 A major production facility was constructed at Bridgwater, somerset, england, from 1935 to 1937, employing 3,000 workers. Bcl subsequently constructed plants in Cornwall, Ontario (bcl canada as an adjunct to the existing courtaulds viscose rayon plant there (from which it bought the viscose solution (aka dope and in 1957 at Barrow-in-Furness, cumbria. Those last two plants were closed in the 1990s. Present day edit cellulose film has been manufactured continuously since the mid-1930s and is still used today. As well as packaging a variety of food items, there are also industrial applications, such as a base for such self-adhesive tapes as Sellotape and Scotch Tape, a semi-permeable membrane in a certain type of battery, as dialysis tubing (Visking tubing and as a release. Cellophane is the most popular material for manufacturing cigar packaging; its permeability to moisture makes cellophane the perfect product for this application as cigars must be allowed to "breathe" while in storage. Cellophane sales have dwindled since the 1960s, due to alternative packaging options. The polluting effects of carbon disulfide and other by-products of the process used to make viscose may have also contributed to this; however, cellophane itself is 100 biodegradable, and that has increased its popularity as a food wrapping. Material properties edit When placed between two plane polarizing filters, cellophane produces prismatic colours due to its birefringent nature. Artists have used this effect to create stained glass-like creations that are kinetic and interactive. Cellophane is biodegradable, but highly toxic carbon disulfide is used in most cellophane production.
for candy wrapping in the United States in 1912 for their Whitman's Sampler. They remained the largest user of imported cellophane from France until nearly 1924, when dupont built the first cellophane manufacturing plant in the. Cellophane saw limited sales in the us at first since while it was waterproof, it was not moisture proof—it held water but was permeable to water vapor. This meant that it was unsuited to packaging products that required moisture proofing. Dupont hired chemist William Hale Charch, who spent three years developing a nitrocellulose lacquer that, when applied to cellophane, made it moisture proof. 4 Following the introduction of moisture-proof Cellophane in 1927, the material's sales tripled between 19, and in 1938, cellophane accounted for 10 of dupont's sales and 25 of its profits. 3 The British textile company courtaulds ' viscose technology had allowed it to diversify in 1930 into viscose film, which it named "Viscacelle". However, competition with Cellophane was an obstacle to its sales, and in 1935 it founded British Cellophane limited (BCL) in conjunction with the cellophane company and its French parent company cta.
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A similar process, using a hole (a spinneret ) instead of a slit, is used to make a fibre called rayon. Chemically, cellophane, rayon and cellulose are polymers of glucose ; they differ structurally rather than chemically. History edit cellophane was invented by Swiss chemist Jacques. Brandenberger while employed by Blanchisserie et teinturerie de Thaon. 1 In 1900, inspired by seeing a wine spill on a restaurant's tablecloth, he decided to create a cloth that could repel liquids rather than absorb them. His first step was to spray a waterproof coating onto fabric, and he opted to try viscose. The resultant coated fabric was far too stiff, but the clear film easily separated from the backing cloth, and he abandoned his original idea as the possibilities of the new material became apparent. It took ten years for Brandenberger to perfect his film, his chief output improvement over earlier work with such films being to add glycerin to soften the material. By 1912 he had constructed a machine to manufacture the film, which he had named Cellophane, from the words cellulose and diaphane transparent.
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Get out some tape! May 27th is cellophane tape day! History of Cellophane tape and the Scotch Brand. Scotch 75th Anniversary — pages with history information and old commercials featuring Scotty McTape. cellophane tapes and Cellophane tape companies. Google Plus Facebook tweeter Email. The precursor to the current tapes was developed in the 1930s.
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Find here cellophane tape suppliers, manufacturers, wholesalers, traders with Cellophane tape prices for buying. M offers 3,016 lauder cellophane tape products. About 5 of these are adhesive tape, 1 are badges, and 1 are tape measures. Cellophane From wikipedia, the free encyclopedia. As well as packaging a variety of food items, there are also industrial applications, such as a base for self-adhesive tapes (Sellotape and Scotch. For example, tape stripping, in which cellophane tape is used to remove the top layer of skin, also enables better antibody responses (both Th1 and Th2). Scotch Tape is a brand name used for pressure-sensitive tapes manufactured by 3M as part of the company's Scotch brand. Its cellophane tape day! May 27th, 2014 / by pee-wee herman.
Cellophane, from wikipedia, the free encyclopedia. Cellophane is a thin, transparent sheet made of processed cellulose. Cellulose fibres from wood or cotton are dissolved in alkali to make a solution called viscose, which is then extruded through a slit into an acid bath to reconvert the viscose into cellulose. A similar process, using a hole instead of a slit, is used to make a fibre called rayon. Cellophane's impermeability to air, grease and bacteria makes it useful for food packaging. Cellulose film has been manufactured continuously since the mid- 1930s and is still used today. As well as packaging a variety of food items, there are also industrial applications, such as a base for self-adhesive tapes (Sellotape and Scotch Tape a semi-permeable membrane in certain types of battery, and as a release payot agent in the manufacture of fibreglass and rubber.
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For other geschoren uses, see, cellophane (disambiguation). Transparent cellophane packaging with gingerbread and a printed cellophane bag with chocolate hearts. Cellophane is a thin, transparent sheet made of regenerated cellulose. Its low permeability to air, oils, greases, bacteria, and water makes it useful for food packaging. "Cellophane" is a generic term in some countries, while in other countries it is a registered trade mark. Contents, production edit, cellulose is treated with alkali and carbon disulfide to yield viscose. Cellulose from wood, cotton, hemp, or other sources is dissolved in alkali and carbon disulfide to make a solution called viscose, which is then extruded through a slit into a bath of dilute sulfuric acid and sodium sulfate to reconvert the viscose into cellulose. The film is then passed through several more baths, one to remove sulfur, one to bleach the film, and one to add softening materials such as glycerin to prevent the film from becoming brittle.