Title:
FILM ROLL
Document Type and Number:
Japanese Patent JP2016044035
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a film roll manufactured without needing any high-level temperature control and capable of preventing wrinkles or slackening on a film when the film taken up on the roll is rolled out to be used, the thickness of the film in a width direction being uniform.SOLUTION: The film roll manufactured by taking up a film on a winding core is characterized in that roll circumferential lengths D1 to D14 at respective portions when the film roll is equally divided into 14 in a width direction satisfy an equation (1) below, and a maximum thickness difference (Tm) among film thicknesses T1 to T14 of the respective portions measured on a straight line in the width direction of the film roll divided into 14 is equal to or less than 1.2% of the average value (Ta) of the film widths T1 to T14.SELECTED DRAWING: Figure 1
Inventors:
TERAI TOMOHIKO
KASAI KENICHI
KASAI KENICHI
Application Number:
JP2014169598A
Publication Date:
April 04, 2016
Filing Date:
August 22, 2014
Export Citation:
Assignee:
DIAPLUS FILM INC
International Classes:
B65H18/28
Domestic Patent References:
| JP2003026358A | 2003-01-29 | |||
| JP2003266525A | 2003-09-24 | |||
| JP3155292U | 2009-11-12 | |||
| JP2000001246A | 2000-01-07 | |||
| JPH02194924A | 1990-08-01 | |||
| JP2003146496A | 2003-05-21 | |||
| JP2001011213A | 2001-01-16 | |||
| JP2011054352A | 2011-03-17 |
Foreign References:
| WO2010113742A1 | 2010-10-07 |
Attorney, Agent or Firm:
Noriyuki Yamamoto
Akihiko Yamashita
Kishimoto Tatsuto
Akihiko Yamashita
Kishimoto Tatsuto