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EXTRUSION DE RESINAS VINILICAS
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EXTRUSION DE RESINAS VINILICAS
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Application filed by EXTRUSION DE RESINAS VINILICASfiledCriticalEXTRUSION DE RESINAS VINILICAS
Priority to ES8803786ApriorityCriticalpatent/ES2009455A6/en
Publication of ES2009455A6publicationCriticalpatent/ES2009455A6/en
Shaping By String And By Release Of Stress In Plastics And The Like
(AREA)
Abstract
The film is made by filling the plastics granules and additives into hopper leading to extruder, from which the material leaves in liquid state through a circular die, and is inflated with air to form a bubble. The film is flattened by a pair of rollers into a sheet, which after passing through another pair of rollers is again inflated with air to form a second bubble with dia. variable as required. - This passes down through tubular oven which re-heats the film before it converges on a pair of rollers, the speed of which can be varied with respect to that of the inlet rollers.
ES8803786A1988-12-131988-12-13Bi-orientated shrink film prodn.
ExpiredES2009455A6
(en)
FRAMSTAELLNINGSFOERFARANDE FOER YTTERDAECK, DAER RUBBER MACHINERY APPLICERAS PAO ETT FAST UNDERLAG, YTTERDAECK, DAER RUBBER MADE PRODUCT APPLICERAS PAO ETT FAST UNDERLAG, OCH ANORDNING MED VILKT ETT DY