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公开(公告)号:US5182920A
公开(公告)日:1993-02-02
申请号:US903275
申请日:1992-06-24
CPC分类号: F25B41/043 , F25B41/062 , F25B2341/065 , F25B2500/15 , Y02B30/72
摘要: A condenser (2), an electronic expansion valve (5), an evaporator (6), and a motorized suction throttle valve (8) are connected in series with a compressor. When a capacity is increased, the electronic expansion valve (5) is controlled to be in a throttling direction and the motorized suction throttle valve (8) is controlled to be in an unthrottling direction in association with the control of the electronic expansion valve (5), and when a capacity is decreased, the electronic expansion valve (5) is controlled to be in an unthrottling direction and the motorized suction throttle valve (8) is controlled to be in a throttling direction in association with the control of the electronic expansion valve (5). While a capacity control of a compressor by a throttle control is been carried out, such associated control is made between the electronic expansion valve (5) and the motorized suction throttle valve (8), realizing a fine temperature control in a refrigerating machine without hunting.
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公开(公告)号:US4844604A
公开(公告)日:1989-07-04
申请号:US206756
申请日:1988-06-15
IPC分类号: C08F290/00 , C08F290/06 , C08F299/06 , C08G18/48 , C08G18/67 , C08G18/81 , C09J4/00 , C09J175/14 , G02B6/04 , G02B6/44
CPC分类号: G02B6/4486 , C08F299/065 , C08G18/4854 , C08G18/672 , C08G18/8175 , G02B6/4403
摘要: A curable resin composition adapted for bundling coated optical fibers comprises:(A) polyetherpolyurethanes of at least one kind having an ethylenically unsaturated group and containing from 40% to 85%, by weight, of a tetramethyleneoxy structure in the entire structure thereof;(B) ethylenically unsaturated monomer; and(C) a photopolymerization initiator. This resin composition, when cured, has a coefficient of dynamic friction with polyethylene of not more than 0.4, and is thus specially adapted for use in holding together coated optical fibers in a tape-like structure.
摘要翻译: 适用于包覆光纤的捆扎的可固化树脂组合物包括:(A)至少一种具有烯属不饱和基团并且在整个结构中含有40-85重量%的四亚甲基氧基结构的聚醚聚氨酯; (B)烯属不饱和单体; 和(C)光聚合引发剂。 该树脂组合物在固化时具有不大于0.4的与聚乙烯的动摩擦系数,因此特别适用于将包覆的光纤保持在带状结构中。
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公开(公告)号:US4649004A
公开(公告)日:1987-03-10
申请号:US686507
申请日:1984-12-26
CPC分类号: B29C47/065 , B29C47/0023 , B29C47/265 , B29C47/8805 , B29C47/882 , B29C47/8895 , B29C47/908 , B29C49/0073 , B29C49/22 , B29D22/003 , B29B2911/14053 , B29B2911/14066 , B29B2911/1408 , B29B2911/14093 , B29B2911/14113 , B29B2911/14126 , B29B2911/1414 , B29B2911/14153 , B29B2911/14166 , B29B2911/1418 , B29B2911/14313 , B29B2911/14326 , B29B2911/14328 , B29B2911/1433 , B29B2911/14331 , B29B2911/14333 , B29B2911/14335 , B29B2911/14336 , B29B2911/14337 , B29B2911/1444 , B29B2911/14466 , B29B2911/14486 , B29B2911/14593 , B29B2911/14653 , B29B2911/14906 , B29B2911/1498 , B29C49/04 , B29K2067/00 , B29K2995/0069 , Y10T428/1383 , Y10T428/2495 , Y10T428/31797
摘要: A process for the production of a multi-layer pipe to be used for formation of a bottle by drawblow-forming, comprising forming by co-extrusion a pipe having inner and outer layers of a polyester composed mainly of ethylene terephthalate units and an intermediate layer of an oxygen-barrier resin interposed between the inner and outer layers. An adhesive resin layer is preferable interposed between every two adjacent layers. The co-extruded multi-layer pipe is sized in the molten state so that the diameter of the pipe is uniform. The process continues by cooling the outer portion of the molten multi-layer pipe by contact with water and simultaneously introducing an inert gas or an inert gas containing a water mist into the interior of the pipe to thereby cool the inner portion of the pipe and prevent oxidation in the pipe. A multi-layer pipe prepared according to this process is excellent in the transparency and the draw-formability into a multi-layer drawn bottle.
摘要翻译: 一种生产用于通过拉伸成形形成瓶子的多层管的方法,包括通过共挤出形成具有主要由对苯二甲酸乙二醇酯单元组成的聚酯的内层和外层的管和中间层 插入在内层和外层之间的氧阻隔树脂。 插入每两个相邻层之间的粘合树脂层是优选的。 共挤出多层管的尺寸为熔融状态,使得管的直径均匀。 该过程通过与水接触来冷却熔融多层管的外部部分,同时将惰性气体或含有水雾的惰性气体引入管内,从而冷却管的内部并防止 管道氧化。 根据该方法制备的多层管在透明度和拉伸成型性方面优异于多层拉伸瓶。
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