Polyamide based mixed resin laminated film roll and a process for producing the same
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United States of America Patent
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Jan 15, 2013
Grant Date -
Dec 31, 2009
app pub date -
Dec 22, 2005
filing date -
Jun 22, 2005
priority date (Note) -
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Abstract
The present invention provides a polyamide based mixed resin laminated film roll formed by winding up a polyamide based mixed resin laminated film comprising a plurality of polyamide mixed resin sheets stacked on top of each other. A first sample cutout portion is provided within 2 m from the winding end of film, and a final sample cutout portion is provided within 2 m from the winding start of film. The roll is regulated so that, when sample cutout portions are provided at intervals of about 100 m from the first sample cutout portion, for all samples cutout from the cutout portions, the elastomer content, tensile modulus of elasticity, thickness unevenness in the longitudinal direction and other properties fall within a predetermined variation range.
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