Process control system
An apparatus and process for the continuous manufacture of high stress, high denier industrial yarn spun from polyethylene terephthalate polyester. A control system continuously measures melt viscosity of the polymer both at the outlet from a polymerization zone and at a downstream location adjacent...
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| creator | ADKINS, JR. VIRGIL J GIBBON JOHN D |
| description | An apparatus and process for the continuous manufacture of high stress, high denier industrial yarn spun from polyethylene terephthalate polyester. A control system continuously measures melt viscosity of the polymer both at the outlet from a polymerization zone and at a downstream location adjacent a manifold immediately preceding a plurality of spinnerettes through which the polymer is drawn into filamentary material. Adjustments are continuously made to a meaningful operating condition within the polymerization zone, such as the magnitude of the vacuum therein, whenever IV inferred from operating data strays from a pre-established level. Adjustments are also regularly made at discrete short term intervals, for example, minute by minute, whenever viscosity at the outlet from the polymerization zone strays from the pre-established level. Additionally, adjustments are made to that pre-established level of viscosity whenever viscosity at the downstream location varies substantially from the norm after a moderate lapse in time, which may vary, for example, between one-half hour and eight hours in duration. |
| format | Patent |
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A control system continuously measures melt viscosity of the polymer both at the outlet from a polymerization zone and at a downstream location adjacent a manifold immediately preceding a plurality of spinnerettes through which the polymer is drawn into filamentary material. Adjustments are continuously made to a meaningful operating condition within the polymerization zone, such as the magnitude of the vacuum therein, whenever IV inferred from operating data strays from a pre-established level. Adjustments are also regularly made at discrete short term intervals, for example, minute by minute, whenever viscosity at the outlet from the polymerization zone strays from the pre-established level. Additionally, adjustments are made to that pre-established level of viscosity whenever viscosity at the downstream location varies substantially from the norm after a moderate lapse in time, which may vary, for example, between one-half hour and eight hours in duration.</description><edition>4</edition><language>eng</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS ; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ; METALLURGY ; NATURAL OR ARTIFICIAL THREADS OR FIBRES ; ORGANIC MACROMOLECULAR COMPOUNDS ; PERFORMING OPERATIONS ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; SPINNING ; TEXTILES ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>1987</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=19870623&DB=EPODOC&CC=US&NR=4675378A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19870623&DB=EPODOC&CC=US&NR=4675378A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ADKINS, JR.; VIRGIL J</creatorcontrib><creatorcontrib>GIBBON; JOHN D</creatorcontrib><title>Process control system</title><description>An apparatus and process for the continuous manufacture of high stress, high denier industrial yarn spun from polyethylene terephthalate polyester. A control system continuously measures melt viscosity of the polymer both at the outlet from a polymerization zone and at a downstream location adjacent a manifold immediately preceding a plurality of spinnerettes through which the polymer is drawn into filamentary material. Adjustments are continuously made to a meaningful operating condition within the polymerization zone, such as the magnitude of the vacuum therein, whenever IV inferred from operating data strays from a pre-established level. Adjustments are also regularly made at discrete short term intervals, for example, minute by minute, whenever viscosity at the outlet from the polymerization zone strays from the pre-established level. Additionally, adjustments are made to that pre-established level of viscosity whenever viscosity at the downstream location varies substantially from the norm after a moderate lapse in time, which may vary, for example, between one-half hour and eight hours in duration.</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS</subject><subject>CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</subject><subject>METALLURGY</subject><subject>NATURAL OR ARTIFICIAL THREADS OR FIBRES</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>PERFORMING OPERATIONS</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</subject><subject>SPINNING</subject><subject>TEXTILES</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>TRANSPORTING</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1987</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBALKMpPTi0uVkjOzyspys9RKK4sLknN5WFgTUvMKU7lhdLcDPJuriHOHrqpBfnxqcUFicmpeakl8aHBJmbmpsbmFo7GhFUAAD-zITw</recordid><startdate>19870623</startdate><enddate>19870623</enddate><creator>ADKINS, JR.; VIRGIL J</creator><creator>GIBBON; JOHN D</creator><scope>EVB</scope></search><sort><creationdate>19870623</creationdate><title>Process control system</title><author>ADKINS, JR.; VIRGIL J ; GIBBON; JOHN D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US4675378A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1987</creationdate><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS</topic><topic>CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</topic><topic>METALLURGY</topic><topic>NATURAL OR ARTIFICIAL THREADS OR FIBRES</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>PERFORMING OPERATIONS</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</topic><topic>SPINNING</topic><topic>TEXTILES</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>TRANSPORTING</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>ADKINS, JR.; VIRGIL J</creatorcontrib><creatorcontrib>GIBBON; JOHN D</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ADKINS, JR.; VIRGIL J</au><au>GIBBON; JOHN D</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Process control system</title><date>1987-06-23</date><risdate>1987</risdate><abstract>An apparatus and process for the continuous manufacture of high stress, high denier industrial yarn spun from polyethylene terephthalate polyester. A control system continuously measures melt viscosity of the polymer both at the outlet from a polymerization zone and at a downstream location adjacent a manifold immediately preceding a plurality of spinnerettes through which the polymer is drawn into filamentary material. Adjustments are continuously made to a meaningful operating condition within the polymerization zone, such as the magnitude of the vacuum therein, whenever IV inferred from operating data strays from a pre-established level. Adjustments are also regularly made at discrete short term intervals, for example, minute by minute, whenever viscosity at the outlet from the polymerization zone strays from the pre-established level. Additionally, adjustments are made to that pre-established level of viscosity whenever viscosity at the downstream location varies substantially from the norm after a moderate lapse in time, which may vary, for example, between one-half hour and eight hours in duration.</abstract><edition>4</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | Process control system |
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