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ETHYLENE VINYL ALCOHOL COPOLYMER PELLET, METHOD FOR EXTRUSION OF THE PELLET AND EXTRUSION MOLDED FILM PRODUCED THEREBY
ETHYLENE VINYL ALCOHOL COPOLYMER PELLET, METHOD FOR EXTRUSION OF THE PELLET AND EXTRUSION MOLDED FILM PRODUCED THEREBY
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机译:乙烯-乙烯基醇共聚物粒料,粒料的挤出方法及由此生产的模压薄膜
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摘要
Extruded films comprising ethylene vinyl alcohol copolymer (EVOH) with substantially no blow holes therein, are formed by using a pellet feed to the extruder wherein 90-100 wt. % of the pellets pass through an ASTM size 5 sieve and 0-10 wt. % of the pellets are finer than a number 10 mesh (ASTM Sieve size). Uniform feeding to and through the extruder with a lack of bridging of the EVOH pellet feed have been observed.
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