Heating roller and film production method

Patent metadata

Field	Value
Publication number	US-2017145559-A1
Application number	US-201615353815-A
Country	US
Kind code	A1
Filing date	Nov 17, 2016
Priority date	Nov 20, 2015
Publication date	May 25, 2017
Grant date	—

Abstract

A drying roller includes: a cylindrical member for drying a separator original sheet, with hot water which is supplied into the cylindrical member and ejected from inside the cylindrical member, the separator original sheet being wrapped on an outer peripheral surface of the cylindrical member; and a discharge pipe for discharging the hot water toward one inner end surface of the cylindrical member, the heating medium being discharged at a position where a distance to the one end surface of the cylindrical member is longer than a distance to the other inner end surface of the cylindrical member.

First claim

1 . A heating roller comprising:
a cylindrical member for heating a film, with a heating medium which is supplied into the cylindrical member and ejected from inside the cylindrical member, the film being wrapped on art outer peripheral surface of the cylindrical member; and a discharge member for discharging, inside the cylindrical member, the heating medium toward one end surface of the cylindrical member, the heating medium being discharged at a position where a distance to the one end surface of the cylindrical member is longer than a distance to the other end surface of the cylindrical member.

2 . The heating roller as set forth in claim 1 , wherein:
the cylindrical member is provided with an outlet for ejecting the heating medium, the outlet being formed at the other end surface of the cylindrical member; and the discharge member has a cylindrical shape, and is inserted into the cylindrical member through the outlet.

3 . A heating roller comprising:
a cylindrical member for heating a film, with a heating medium which is supplied into the cylindrical member so as to fill the cylindrical member and ejected from inside the cylindrical member, the film being wrapped on an outer peripheral surface of the cylindrical member; and a discharge member for discharging, inside the cylindrical member, the heating medium toward an inner peripheral surface of the cylindrical member, the cylindrical member rotating on a center axis of the cylindrical member in response to transfer of the film, and the discharge member being fixed and not rotated on the center axis.

4 . The heating roller as set forth in claim 3 , wherein:
the heating medium is heated liquid.

5 . The heating roller as set forth in claim 3 , wherein:
the discharge member has a plurality of discharge openings formed along an axis direction of the cylindrical member, and discharges the heating medium toward the inner peripheral surface through the plurality of discharge openings.

6 . The heating roller as set forth in claim 3 , wherein:
the cylindrical member is provided with an outlet for ejecting the heating medium, the outlet being formed at one end surface of the cylindrical member; and the discharge member has a cylindrical shape and is inserted into the cylindrical member through the outlet.

7 . A heating roller comprising:
a cylindrical member for heating a film, with a heating medium which is supplied into the cylindrical member and ejected from inside the cylindrical member, the film being wrapped on an outer peripheral surface of the cylindrical member; and a discharge member for discharging, toward one end surface of the cylindrical member, the heating medium which is supplied into the cylindrical member, the discharge member separating the heating medium into portions and discharging the portions of the heating medium respectively at a first discharge position and a second discharge position, the first discharge posit on and the second discharge position being arranged such that a distance from the second discharge position to the one end surface is longer than a distance from the first discharge position to the one end surface.

8 . The heating roller as set forth in claim 7 , wherein:
the discharge member further separates the heating medium so as to give another portion of the heating medium, and discharges the another portion of the heating medium at a third discharge position toward the one end surface of the cylindrical member; and the second discharge position and the third discharge position are arranged such that a distance from the third discharge position to the one end surface is longer than the distance from the second discharge position to the one end surface.

9 . A heating roller comprising:
a cylindrical member for heating a film, with a heating medium which is supplied into the cylindrical member and ejected from inside the cylindrical member, the film being wrapped on an outer peripheral surface of the cylindrical member; and a discharge member for discharging, inside the cylindrical member, the heating medium toward one end surface of the cylindrical member, the cylindrical member having a peripheral wall which is thicker on a side corresponding to the one end surface of the cylindrical member than on another side corresponding to the other end surface of the cylindrical member.

10 . The heating roller as set forth in claim 9 , wherein:
the discharge member discharges the heating medium toward the one end surface, the heating medium being discharged at a position where a distance to the one end surface is shorter than a distance to the other end surface.

11 . A film production method comprising the steps of:
supplying a heating medium into a heating roller as set forth in claim 1 and ejecting the heating medium from inside the heating roller; and heating a film by wrapping the film on an outer peripheral surface of a cylindrical member of the heating roller.

12 . The film production method as set forth in claim 11 , wherein:
the film is a separator for a lithium ion secondary battery.

13 . A film production method comprising the steps of:
supplying a heating medium into a heating roller as set forth in claim 3 and ejecting the heating medium from inside the heating roller; and heating a film by wrapping the film on an outer peripheral surface of a cylindrical member of the heating roller.

14 . The film production method as set forth in claim 13 , wherein:
the film is a separator for a lithium ion secondary battery.

15 . A film production method comprising the steps of:
supplying a heating medium into a heating roller as set forth in claim 7 and ejecting the heating medium from inside the heating roller; and heating a film by wrapping the film on an outer peripheral surface of a cylindrical member of the heating roller.

16 . The film production method as set forth in claim 15 , wherein:
the film is a separator for a lithium ion secondary battery.

17 . A film production method comprising the steps of:
supplying a heating medium into a heating roller as set forth in claim 9 and ejecting the heating medium from inside the heating roller; and heating a film by wrapping the film on an outer peripheral surface of a cylindrical member of the heating roller.

18 . The film production method as set forth in claim 17 , wherein:
the film is a separator for a lithium ion secondary battery.

Assignees

• Sumitomo Chemical Co

Inventors

• Shin Akihiko
• Watanabe Koichiro

Classifications

• F26B11/02

  in moving drums or other mainly-closed receptacles (F26B11/18 takes precedence) · CPC title

• B01D1/00

  Evaporating ({evaporation in general, e.g. of liquids for gas phase reactions B01B1/005} ; removal of incrustation B08B; preparation of starch C08B30/00; sugar industry C13; prevention of incrustation C23F; drying solid materials or objects by evaporating liquids therefrom F26) · CPC title

• B05D3/0254

  After-treatment · CPC title

• D21G1/0266

  using a heat-transfer fluid (D21G1/026 takes precedence) · CPC title

• B05C1/003

  incorporating means for heating or cooling the liquid or other fluent material (B05C11/1042 takes precedence) · CPC title