METHOD OF CURING A COMPOSITE ARTICLE USING DIFFERENTIAL VACUUM
A method of curing a composite layup may include applying an inner bag vacuum pressure to an inner bag chamber (166) and an outer vacuum pressure to an outer vacuum chamber (194). The vacuum inner bag chamber may be formed by a vacuum bag (150) covering a composite layup (106) and sealed to a formin...
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| creator | MICHAEL R. ANDERSON GRANT C. ZENKNER |
| description | A method of curing a composite layup may include applying an inner bag vacuum pressure to an inner bag chamber (166) and an outer vacuum pressure to an outer vacuum chamber (194). The vacuum inner bag chamber may be formed by a vacuum bag (150) covering a composite layup (106) and sealed to a forming tool (104) with an inner bag chamber seal (158). The inner bag vacuum pressure may be no less than the outer vacuum pressure. The temperature of the composite layup may be increased to an elevated temperature to initiate a temperature hold period. The method may additionally include venting the outer vacuum chamber to atmosphere to initiate an outer vacuum chamber venting period during the temperature hold period, and applying compaction pressure to the inner bag chamber seal during the outer vacuum chamber venting period. The outer vacuum pressure may be re-applied to the outer vacuum chamber to terminate the outer vacuum chamber venting period. |
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ZENKNER</creatorcontrib><description>A method of curing a composite layup may include applying an inner bag vacuum pressure to an inner bag chamber (166) and an outer vacuum pressure to an outer vacuum chamber (194). The vacuum inner bag chamber may be formed by a vacuum bag (150) covering a composite layup (106) and sealed to a forming tool (104) with an inner bag chamber seal (158). The inner bag vacuum pressure may be no less than the outer vacuum pressure. The temperature of the composite layup may be increased to an elevated temperature to initiate a temperature hold period. The method may additionally include venting the outer vacuum chamber to atmosphere to initiate an outer vacuum chamber venting period during the temperature hold period, and applying compaction pressure to the inner bag chamber seal during the outer vacuum chamber venting period. The outer vacuum pressure may be re-applied to the outer vacuum chamber to terminate the outer vacuum chamber venting period.</description><language>eng ; por</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; 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>2019</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=20190530&DB=EPODOC&CC=PT&NR=3153289T$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190530&DB=EPODOC&CC=PT&NR=3153289T$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MICHAEL R. 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The outer vacuum pressure may be re-applied to the outer vacuum chamber to terminate the outer vacuum chamber venting period.</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</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>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>2019</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLDzdQ3x8HdR8HdTcA4N8vRzV3BUcPb3DfAP9gxxVXAMCvF09nFVCA0Gybh4urm5Brn6hXg6-iiEOTqHhvryMLCmJeYUp_JCaW4GBTfXEGcP3dSC_PjU4oLE5NS81JL4gBBjQ1NjIwvLkBBjIpQAAAI5Ki8</recordid><startdate>20190530</startdate><enddate>20190530</enddate><creator>MICHAEL R. ANDERSON</creator><creator>GRANT C. 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ZENKNER</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MICHAEL R. ANDERSON</au><au>GRANT C. ZENKNER</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD OF CURING A COMPOSITE ARTICLE USING DIFFERENTIAL VACUUM</title><date>2019-05-30</date><risdate>2019</risdate><abstract>A method of curing a composite layup may include applying an inner bag vacuum pressure to an inner bag chamber (166) and an outer vacuum pressure to an outer vacuum chamber (194). The vacuum inner bag chamber may be formed by a vacuum bag (150) covering a composite layup (106) and sealed to a forming tool (104) with an inner bag chamber seal (158). The inner bag vacuum pressure may be no less than the outer vacuum pressure. The temperature of the composite layup may be increased to an elevated temperature to initiate a temperature hold period. The method may additionally include venting the outer vacuum chamber to atmosphere to initiate an outer vacuum chamber venting period during the temperature hold period, and applying compaction pressure to the inner bag chamber seal during the outer vacuum chamber venting period. The outer vacuum pressure may be re-applied to the outer vacuum chamber to terminate the outer vacuum chamber venting period.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 CURING A COMPOSITE ARTICLE USING DIFFERENTIAL VACUUM |
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