METHOD OF PRODUCTION OF WATER-SOLUBLE FOILS
Object of this solution is a method of production of water- -soluble foils on the base of a modified polyvinylalcohol with a different water solubility. The foils are produced by blowing technology so that polyvinylalcohol is dosed into a rotating feed worm placed in a heated chamber. Behind a coole...
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| creator | BENC GABRIEL CERVINKOVA DANICA VARGA ALEXANDER SKUBLA PAVOL |
| description | Object of this solution is a method of production of water- -soluble foils on the base of a modified polyvinylalcohol with a different water solubility. The foils are produced by blowing technology so that polyvinylalcohol is dosed into a rotating feed worm placed in a heated chamber. Behind a cooled input zone material is rapidly heated up to 200-240 degrees of Celsius, then the temperature of the zones gradually decreases up to a nozzle, where the temperature is 170-210 degrees of Celsius; next, melt is extruded through a circular nozzle, cooled by air and blow to a required size. After folding, the foil passes through a climatizing chamber and then is winding. Water soluble polyvinylalcohol foils can be used for special applications in health service, chemical industry, for food packing and alike. |
| format | Patent |
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The foils are produced by blowing technology so that polyvinylalcohol is dosed into a rotating feed worm placed in a heated chamber. Behind a cooled input zone material is rapidly heated up to 200-240 degrees of Celsius, then the temperature of the zones gradually decreases up to a nozzle, where the temperature is 170-210 degrees of Celsius; next, melt is extruded through a circular nozzle, cooled by air and blow to a required size. After folding, the foil passes through a climatizing chamber and then is winding. Water soluble polyvinylalcohol foils can be used for special applications in health service, chemical industry, for food packing and alike.</description><edition>6</edition><language>eng</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS ; PERFORMING OPERATIONS ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>1996</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19960508&DB=EPODOC&CC=SK&NR=278247B6$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19960508&DB=EPODOC&CC=SK&NR=278247B6$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BENC GABRIEL</creatorcontrib><creatorcontrib>CERVINKOVA DANICA</creatorcontrib><creatorcontrib>VARGA ALEXANDER</creatorcontrib><creatorcontrib>SKUBLA PAVOL</creatorcontrib><title>METHOD OF PRODUCTION OF WATER-SOLUBLE FOILS</title><description>Object of this solution is a method of production of water- -soluble foils on the base of a modified polyvinylalcohol with a different water solubility. The foils are produced by blowing technology so that polyvinylalcohol is dosed into a rotating feed worm placed in a heated chamber. Behind a cooled input zone material is rapidly heated up to 200-240 degrees of Celsius, then the temperature of the zones gradually decreases up to a nozzle, where the temperature is 170-210 degrees of Celsius; next, melt is extruded through a circular nozzle, cooled by air and blow to a required size. After folding, the foil passes through a climatizing chamber and then is winding. 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The foils are produced by blowing technology so that polyvinylalcohol is dosed into a rotating feed worm placed in a heated chamber. Behind a cooled input zone material is rapidly heated up to 200-240 degrees of Celsius, then the temperature of the zones gradually decreases up to a nozzle, where the temperature is 170-210 degrees of Celsius; next, melt is extruded through a circular nozzle, cooled by air and blow to a required size. After folding, the foil passes through a climatizing chamber and then is winding. Water soluble polyvinylalcohol foils can be used for special applications in health service, chemical industry, for food packing and alike.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | METHOD OF PRODUCTION OF WATER-SOLUBLE FOILS |
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