METHOD FOR MANUFACTURING RETARDATION FILM
PROBLEM TO BE SOLVED: To provide a method for manufacturing a polypropylene-based resin retardation film having high axis accuracy and uniform phase difference value.SOLUTION: The method for manufacturing the polypropylene-based resin retardation film includes: (A) longitudinally stretching a rolled...
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| creator | KUROIWA HIDEO NAKATANI AKIHIKO ARIKAWA NAOKI |
| description | PROBLEM TO BE SOLVED: To provide a method for manufacturing a polypropylene-based resin retardation film having high axis accuracy and uniform phase difference value.SOLUTION: The method for manufacturing the polypropylene-based resin retardation film includes: (A) longitudinally stretching a rolled film made of a polypropylene-based resin; (B) curing the longitudinally stretched rolled film under the environment of a temperature of T°C between 0-40°C; and (C) laterally stretching the cured rolled film, in this order. The curing step (B) is conducted so as to satisfy the expression: D≥-0.4T+20 on the basis of a curing period as D day. Typically, the method includes: (A) longitudinally stretching the rolled film made of the polypropylene-based resin; (B) curing the longitudinally stretched rolled film under the environment of a temperature of between 20-30°C for 10 days or more; and (C) laterally stretching the cured rolled film, in this order. |
| format | Patent |
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The curing step (B) is conducted so as to satisfy the expression: D≥-0.4T+20 on the basis of a curing period as D day. Typically, the method includes: (A) longitudinally stretching the rolled film made of the polypropylene-based resin; (B) curing the longitudinally stretched rolled film under the environment of a temperature of between 20-30°C for 10 days or more; and (C) laterally stretching the cured rolled film, in this order.</description><language>eng</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES ; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; PERFORMING OPERATIONS ; PHYSICS ; 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>2012</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=20120223&DB=EPODOC&CC=JP&NR=2012037597A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120223&DB=EPODOC&CC=JP&NR=2012037597A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KUROIWA HIDEO</creatorcontrib><creatorcontrib>NAKATANI AKIHIKO</creatorcontrib><creatorcontrib>ARIKAWA NAOKI</creatorcontrib><title>METHOD FOR MANUFACTURING RETARDATION FILM</title><description>PROBLEM TO BE SOLVED: To provide a method for manufacturing a polypropylene-based resin retardation film having high axis accuracy and uniform phase difference value.SOLUTION: The method for manufacturing the polypropylene-based resin retardation film includes: (A) longitudinally stretching a rolled film made of a polypropylene-based resin; (B) curing the longitudinally stretched rolled film under the environment of a temperature of T°C between 0-40°C; and (C) laterally stretching the cured rolled film, in this order. The curing step (B) is conducted so as to satisfy the expression: D≥-0.4T+20 on the basis of a curing period as D day. 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The curing step (B) is conducted so as to satisfy the expression: D≥-0.4T+20 on the basis of a curing period as D day. Typically, the method includes: (A) longitudinally stretching the rolled film made of the polypropylene-based resin; (B) curing the longitudinally stretched rolled film under the environment of a temperature of between 20-30°C for 10 days or more; and (C) laterally stretching the cured rolled film, in this order.</abstract><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 SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS 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 FOR MANUFACTURING RETARDATION FILM |
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