| 释义 |
polythene|ˈpɒlɪθiːn|
[Contraction of polyethylene.]
A tough, light, translucent thermoplastic made by polymerizing ethylene and used esp. for moulded and extruded articles, as film for packaging, and as a coating. Freq. attrib. and in Comb.
1939Plastics III. 231/2 Polythene, the new polymerized ethylenic resin. Ibid. 289/1 Polymerized ethylenes manufactured..under the trade name of Polythene by I.C.I. have excellent electrical properties... These new compounds are now being carefully considered by well⁓known cable companies. 1943Brit. Plastics XV. 417 Polythene is a general term for a range of solid polymers of ethylene, first discovered and prepared in I.C.I. Research Laboratories by subjecting ethylene to extremely high pressures under carefully controlled conditions. These products are sold under the registered name ‘Alkathene’. 1945Times 25 May 8/6 An outstanding I.C.I. achievement in the field of plastics was the discovery and development of polythene or polymerised ethylene. Polythene was seen to be a most valuable insulating material for high-frequency radio and television. 1951Catal. of Exhibits, South Bank Exhib., Festival of Britain 109/1 Polythene ice cube mould. 1957E. Bone Seven Years' Solitary xiv. 211, I had never heard of polythene bags. 1958Economist 29 Mar. 1138/1 Sealed polythene bags offering protection and convenience in handling, have become commonplace for many small consumer products which used to be sold unpackaged. 1959Spectator 25 Sept. 409/1 Polythene-wrapped food may be staler than it looks. 1960Farmer & Stockbreeder 8 Mar. 105/2 There is a water trough supplied by the polythene pipe laid up one grass verge of the road. 1973R. Fiennes Headless Valley vii. 129 We camped above the river beneath a thin sheet of polythene and slept. 1973Materials & Technol. VI. viii. 524 Polythene has the simplest chemical structure of all plastics, consisting only of carbon and hydrogen in a straight chain. Ibid. 525 There are now many manufacturers of polythene, which is marketed under trade names such as Alkathene (UK), Bakelite, Alathon (USA), Lupolen (Germany) and so on. 1973J. Rossiter Manipulators xxii. 213 She put on a glistening white polythene raincoat. |