BIAXIALLY STRETCHED FILM AND METHOD FOR MANUFACTURING SAME, POLARIZER PROTECTIVE FILM, DECORATIVE FILM, AND LAYERED FILM
The present invention provides a method of manufacturing a biaxially stretched film which exhibits small heat shrinkage and has excellent dimensional stability. An unstretched thermoplastic resin film composed of at least one thermoplastic resin layer is biaxially stretched in a longitudinal directi...
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| creator | FUKUHARA, Naoto NANBA, Michiyuki NAKAMURA, Eiji ZENTO, Toshiyuki |
| description | The present invention provides a method of manufacturing a biaxially stretched film which exhibits small heat shrinkage and has excellent dimensional stability. An unstretched thermoplastic resin film composed of at least one thermoplastic resin layer is biaxially stretched in a longitudinal direction and a width direction to manufacture the biaxially stretched film. The method of manufacturing the biaxially stretched film according to the present invention includes: a process (I) for preheating the thermoplastic resin film to a temperature in a rubbery plateau region in a storage elastic modulus curve; a process (II) for biaxially stretching the thermoplastic resin film under a condition that a stretching speed is 500%/min or higher while heating the thermoplastic resin film to the temperature in the rubbery plateau region; a process (III) for cooling the thermoplastic resin film after the process (II) to a temperature in a glass-to-rubber transition region or a glass region in the storage elastic modulus curve; and a process (IV) for relaxing the thermoplastic resin film after the process (III) under the temperature in the glass-to-rubber transition region. |
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An unstretched thermoplastic resin film composed of at least one thermoplastic resin layer is biaxially stretched in a longitudinal direction and a width direction to manufacture the biaxially stretched film. The method of manufacturing the biaxially stretched film according to the present invention includes: a process (I) for preheating the thermoplastic resin film to a temperature in a rubbery plateau region in a storage elastic modulus curve; a process (II) for biaxially stretching the thermoplastic resin film under a condition that a stretching speed is 500%/min or higher while heating the thermoplastic resin film to the temperature in the rubbery plateau region; a process (III) for cooling the thermoplastic resin film after the process (II) to a temperature in a glass-to-rubber transition region or a glass region in the storage elastic modulus curve; and a process (IV) for relaxing the thermoplastic resin film after the process (III) under the temperature in the glass-to-rubber transition region.</description><language>eng ; fre ; ger</language><subject>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G ; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; GENERAL PROCESSES OF COMPOUNDING ; LAYERED PRODUCTS ; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ; METALLURGY ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; ORGANIC MACROMOLECULAR COMPOUNDS ; PERFORMING OPERATIONS ; PHYSICS ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL ; WORKING-UP</subject><creationdate>2017</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=20171108&DB=EPODOC&CC=EP&NR=3127681A4$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20171108&DB=EPODOC&CC=EP&NR=3127681A4$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FUKUHARA, Naoto</creatorcontrib><creatorcontrib>NANBA, Michiyuki</creatorcontrib><creatorcontrib>NAKAMURA, Eiji</creatorcontrib><creatorcontrib>ZENTO, Toshiyuki</creatorcontrib><title>BIAXIALLY STRETCHED FILM AND METHOD FOR MANUFACTURING SAME, POLARIZER PROTECTIVE FILM, DECORATIVE FILM, AND LAYERED FILM</title><description>The present invention provides a method of manufacturing a biaxially stretched film which exhibits small heat shrinkage and has excellent dimensional stability. An unstretched thermoplastic resin film composed of at least one thermoplastic resin layer is biaxially stretched in a longitudinal direction and a width direction to manufacture the biaxially stretched film. The method of manufacturing the biaxially stretched film according to the present invention includes: a process (I) for preheating the thermoplastic resin film to a temperature in a rubbery plateau region in a storage elastic modulus curve; a process (II) for biaxially stretching the thermoplastic resin film under a condition that a stretching speed is 500%/min or higher while heating the thermoplastic resin film to the temperature in the rubbery plateau region; a process (III) for cooling the thermoplastic resin film after the process (II) to a temperature in a glass-to-rubber transition region or a glass region in the storage elastic modulus curve; and a process (IV) for relaxing the thermoplastic resin film after the process (III) under the temperature in the glass-to-rubber transition region.</description><subject>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G</subject><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>GENERAL PROCESSES OF COMPOUNDING</subject><subject>LAYERED PRODUCTS</subject><subject>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</subject><subject>METALLURGY</subject><subject>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</subject><subject>OPTICS</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</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><subject>WORKING-UP</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjTEPgjAUhFkcjPof3g_AATHq-mxfpUlLyaMYcSHE1MkoCQ7-fMUwODpd7nL33TR67TWeNBpTQ-mZvMhIgtLGAuYSLPnMfbxjsJhXCoWvWOcHKNFSDIUzyPpMDAU7T8LrI33HMUgSjvEnGHAGa-KRP48m1_bWh8WoswjUcL8M3aMJfddewj08GyrSZLXd7BJcp39U3gFNOT8</recordid><startdate>20171108</startdate><enddate>20171108</enddate><creator>FUKUHARA, Naoto</creator><creator>NANBA, Michiyuki</creator><creator>NAKAMURA, Eiji</creator><creator>ZENTO, Toshiyuki</creator><scope>EVB</scope></search><sort><creationdate>20171108</creationdate><title>BIAXIALLY STRETCHED FILM AND METHOD FOR MANUFACTURING SAME, POLARIZER PROTECTIVE FILM, DECORATIVE FILM, AND LAYERED FILM</title><author>FUKUHARA, Naoto ; NANBA, Michiyuki ; NAKAMURA, Eiji ; ZENTO, Toshiyuki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3127681A43</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2017</creationdate><topic>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G</topic><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>GENERAL PROCESSES OF COMPOUNDING</topic><topic>LAYERED PRODUCTS</topic><topic>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</topic><topic>METALLURGY</topic><topic>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</topic><topic>OPTICS</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICS</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</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><topic>WORKING-UP</topic><toplevel>online_resources</toplevel><creatorcontrib>FUKUHARA, Naoto</creatorcontrib><creatorcontrib>NANBA, Michiyuki</creatorcontrib><creatorcontrib>NAKAMURA, Eiji</creatorcontrib><creatorcontrib>ZENTO, Toshiyuki</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>FUKUHARA, Naoto</au><au>NANBA, Michiyuki</au><au>NAKAMURA, Eiji</au><au>ZENTO, Toshiyuki</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>BIAXIALLY STRETCHED FILM AND METHOD FOR MANUFACTURING SAME, POLARIZER PROTECTIVE FILM, DECORATIVE FILM, AND LAYERED FILM</title><date>2017-11-08</date><risdate>2017</risdate><abstract>The present invention provides a method of manufacturing a biaxially stretched film which exhibits small heat shrinkage and has excellent dimensional stability. An unstretched thermoplastic resin film composed of at least one thermoplastic resin layer is biaxially stretched in a longitudinal direction and a width direction to manufacture the biaxially stretched film. The method of manufacturing the biaxially stretched film according to the present invention includes: a process (I) for preheating the thermoplastic resin film to a temperature in a rubbery plateau region in a storage elastic modulus curve; a process (II) for biaxially stretching the thermoplastic resin film under a condition that a stretching speed is 500%/min or higher while heating the thermoplastic resin film to the temperature in the rubbery plateau region; a process (III) for cooling the thermoplastic resin film after the process (II) to a temperature in a glass-to-rubber transition region or a glass region in the storage elastic modulus curve; and a process (IV) for relaxing the thermoplastic resin film after the process (III) under the temperature in the glass-to-rubber transition region.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP |
| title | BIAXIALLY STRETCHED FILM AND METHOD FOR MANUFACTURING SAME, POLARIZER PROTECTIVE FILM, DECORATIVE FILM, AND LAYERED FILM |
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