Deformation behavior, processability and physical properties for biaxially oriented film of LLDPE / H. Uehara in INTERNATIONAL POLYMER PROCESSING, Vol. XIX, N° 2 (06/2004)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XIX, N° 2 (06/2004) . - p. 155-162 Titre : Deformation behavior, processability and physical properties for biaxially oriented film of LLDPE Type de document : texte imprimé Auteurs : H. Uehara, Auteur ; T. Yamada, Auteur ; T. Kanai, Auteur ; K. Sakauchi, Auteur Année de publication : 2004 Article en page(s) : p. 155-162 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : The bubble deformation behavior of double bubble tubular film (DBTF) of linear low density polyethylene (LLDPE) is experimentally analyzed. Also investigated is how the bubble deformation behavior of the stretched films are changed by stretching conditions, especially stretching temperature, and how the properties of stretched films are influenced by stretching conditions. From the results, the optimum conditions required to obtain a stable bubble and good properties for the DBTF of LLDPE are indicated. The relationship between the DBTF and laboratory tenter stretched film (LTSF) is investigated in order to predict the processability and the properties of the DBTF by using the laboratory tenter biaxial stretcher. This method is not only more time efficient, but also reduces overall costs of developing the DBTF. DOI : 10.3139/217.1813 En ligne : https://drive.google.com/file/d/1ZK5g0EziI1rPZeJuNj0GryZ2BTwxG5Pd/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3283 [article]

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Stretchability and properties of biaxially oriented polypropylene film / T. Kanai in INTERNATIONAL POLYMER PROCESSING, Vol. XXI, N° 5 (11/2006)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXI, N° 5 (11/2006) . - p. 449-456 Titre : Stretchability and properties of biaxially oriented polypropylene film Type de document : texte imprimé Auteurs : T. Kanai, Auteur ; T. Yamada, Auteur ; K. Sakauchi, Auteur ; H. Uehara, Auteur Année de publication : 2006 Article en page(s) : p. 449-456 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : The double bubble tubular film (DBTF) process is a more economical way of producing biaxially oriented film, when compared to the tenter biaxially oriented film process. This film manufacturing technique has been widely used to produce biaxially oriented films because of good shrinkability and high physical properties. Recently, shrinkage film for this usage is required to have good stretchability and shrinkage strength. But the biaxial stretchability changes of polypropylenes and the reasons for such have not been reported upon systematically. In this report, the relationship between stretchability and material design of various polypropylenes (PP) for biaxially oriented film, which are most popular polymers, was investigated. Several different ethylene contents and melt flow indices (MI) of PP were examined. There was a correlation between MI, ethylene content and the stretchability of the DBTF. A random copolymer with MI 2 g/10 min and ethylene content 4.0 wt.% gave good stretchability. The most suitable composition distribution for stretching and the properties of biaxially oriented films were studied by using the temperature rising elution fractionation. DOI : https://doi.org/10.3139/217.0987 En ligne : https://drive.google.com/file/d/1D-zK9Ot5xIMQHlKF2y9m2cNoHL99OUZK/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2798 [article]

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Stretchability and properties of LLDPE blends for biaxially oriented film / H. Uehara in INTERNATIONAL POLYMER PROCESSING, Vol. XIX, N° 2 (06/2004)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XIX, N° 2 (06/2004) . - p. 163-171 Titre : Stretchability and properties of LLDPE blends for biaxially oriented film Type de document : texte imprimé Auteurs : H. Uehara, Auteur ; T. Yamada, Auteur ; T. Kanai, Auteur ; K. Sakauchi, Auteur Année de publication : 2004 Article en page(s) : p. 163-171 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : In order to improve the stretchability of linear low density polyethylene (LLDPE) for double bubble tubular film (DBTF), the blending of LLDPEs have been investigated. Three LLDPEs of varying densities were blended, and several films having different densities, molecular-weight distributions and composition distributions were produced. The stretchability and properties of these films were investigated and the relationship between the stretchability and the material properties were also discussed. The material properties of LLDPE which showed better stretchability were reported. Furthermore, the stretchability of LLDPE by using the laboratory tenter stretched film (LTSF) and the DBTF were compared. The prediction of the stretchability for the DBTF by using the LTSF was reported. DOI : 10.3139/217.1812 En ligne : https://drive.google.com/file/d/1F9dboYaj6jM4G_uGmV2Xx7_UPq1i1FS5/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3284 [article]

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Stretchability and properties of various LLDPE for biaxially oriented film / H. Uehara in INTERNATIONAL POLYMER PROCESSING, Vol. XIX, N° 2 (06/2004)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XIX, N° 2 (06/2004) . - p. 172-179 Titre : Stretchability and properties of various LLDPE for biaxially oriented film Type de document : texte imprimé Auteurs : H. Uehara, Auteur ; T. Yamada, Auteur ; T. Kanai, Auteur ; K. Sakauchi, Auteur Année de publication : 2004 Article en page(s) : p. 172-179 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : Stretchability and properties of linear low density polyethylene (LLDPE) blends for biaxially oriented film was investigated in the previous report [1]. That report focused on changing the film density by blending three different densities of LLDPE. The relationship among stretchability, film density and the composition distribution was explored. In this report, several different densities and melt flow indices (MFI) of LLDPE were examined. A film with a density of about 0.915 g/cm3 displayed the best stretchability, while films not less than 2 g/10 min MFI had poor stretchability. The most suitable composition distribution for stretching was reported. The properties of biaxially oriented films were also evaluated. Furthermore, the relationship between the laboratory tenter stretched film (LTSF) and the double bubble tubular film (DBTF) was investigated. There was a correlation between the density in film over 0.910 g/cm3 and the stretchability of the DBTF and LTSF. DOI : 10.3139/217.1816 En ligne : https://drive.google.com/file/d/1oIxXgsnvjRlZLlMhY1c4Q7cYQEEdKFIT/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3285 [article]

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