TWI798880B

This film roll manufacturing method includes: a stretching step for stretching an acrylic resin film F at least in a flow direction MD; a first winding step for winding the stretched film F on a first winding core W1; and a second winding step, following the first winding step, for winding the film...

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Bibliographic Details
Main Authors ITONAGA, KAREN, SHINAGAWA, MASASHI, OKA, AMANE
Format Patent
LanguageChinese
Published 11.04.2023
Subjects
CONVEYING
HANDLING THIN OR FILAMENTARY MATERIAL
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES
PACKING
PERFORMING OPERATIONS
STORING
TRANSPORTING
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Summary:This film roll manufacturing method includes: a stretching step for stretching an acrylic resin film F at least in a flow direction MD; a first winding step for winding the stretched film F on a first winding core W1; and a second winding step, following the first winding step, for winding the film F that has been wound around the first winding core W1 on a second winding core W2. The second winding step is initiated after the shrinkage rate of the film F in the flow direction MD reaches at least 0.015%, and is ended while said shrinkage rate is no greater than 0.035%.
Bibliography:Application Number: TW202110138574