| 摘要 |
PROBLEM TO BE SOLVED: To provide a wrinkle stretch method for a web and its device capable of stretching wrinkle and shrinkage of the web without attaching indentation flaw, with less variation with age of an expander roll. SOLUTION: The wrinkle stretch device 1A for the web is provided with a rotation charging roll 4 formed with a charging part 43 and a non-charging part 42 on a surface with a predetermined gap; a rotation contact roll 3 contacted with the charging roll 4, formed with a dielectric body layer 32 on a surface and formed with a pattern of charging and non-charging on the surface by the charging part 43 and the non-charging part 42; and a discharging roll 5 contacted with the contact roll 3 and discharging the pattern of the charging and the non-charging formed on the surface of the contact roll 3. Optional charging patten is formed on the surface of the web F by contacting the wide and long web F with the surface of the contact roll 3 and the web F is stretched in the width direction by electrostatic attraction force to stretch the wrinkle of the web. COPYRIGHT: (C)2005,JPO&NCIPI
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