# US 10,370,215 B2 · Nip roller and method of manufacturing film roll body

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- Number: US 10,370,215 B2
- Document ID: US10370215B2
- Status: Granted
- Kind: B2
- Application number: 15/558,004
- Filed: 2017-05-11
- Published: 2018-11-01
- Granted: 2019-08-06
- Earliest claimed: 2016-09-29
- Assignees: Toray Industries, Inc.
- Applicants: Toray Industries, Inc.; Toray Plastics (America), Inc.
- Inventors: Takashi Ichinomiya; Nobuhiro Naito; Naohiro Takashima; Jeffrey Stephen L'Heureux
- Web page: https://patentgrep.com/patent/US10370215B2

## CPC

- B65H 27/00: Special constructions, e.g. surface features, of feed or guide rollers for webs (rollers in general F16C13/00)
- B65H 18/08: Web-winding mechanisms
- B65H 18/28: Wound package of webs
- F16C 13/00: Rolls, drums, discs, or the like (guide rollers in feeding webs B65H27/00; calender rolls, bearings therefor D21G1/02; rotary drums or rollers for heat-exchange or heat-transfer apparatus F28F5/02); Bearings or mountings therefor
- F16C 13/006: {Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one}
- B65H 2401/23: Strength of materials, e.g. Young's modulus or tensile strength
- B65H 2404/18: composed of several layers
- B65H 2601/524: Vibration
- F16C 3/026: {Shafts made of fibre reinforced resin}
- F16C 2208/02: comprising fillers, fibres
- F16C 2208/10: Elastomers; Rubbers
- B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

A nip roller includes a core material having a surface coated with rubber. The nip roller having a support length L1 of 5 m or longer. The rubber surface has a hardness H (deg) equal to or lower than 65 deg as measured by a JIS K6253 Type A durometer (A type). Mass W (kg) of the nip roller and second moment of area I1 (m4) and the Young's modulus E1 (Pa) of the core material satisfy E1I1/W≥80000.

## Claims

### Claim 1

A nip roller comprising
a core material having a surface coated with rubber, the nip roller having a support length L1 of 5 m or longer, wherein
the rubber coating the surface has a hardness H (deg) equal to or lower than 65 deg as measured by a JIS K6253 Type A durometer (A type), and
mass W (kg) of the nip roller and second moment of area I1 (m4) and Young's modulus E1 (Pa) of the core material satisfy a mathematical expression (1) below:
E1I1/W≥80000 (1).

### Claim 2 (depends on 1)

The nip roller according to claim 1, wherein the core material of the nip roller is CFRP.

### Claim 3 (depends on 2)

The nip roller according to claim 2, wherein the CFRP has a Young's modulus S1 equal to or greater than 250 GPa.

### Claim 4

A method of manufacturing a film roll body, comprising
conveying a film by a plurality of conveyance rollers and winding the film into a film roll body, wherein
a nip roller is provided in proximity to the film coming into contact with one or more of the conveyance rollers, the nip roller is configured to squeeze the film with the conveyance roller(s),
the nip roller includes a core material having a surface coated with rubber, the nip roller having a support length L1 of 5 m or longer,
the rubber surface has a hardness H (deg) equal to or lower than 65 deg as measured by a JIS K6253 Type A durometer (A type), and
mass W (kg) of the nip roller and second moment of area I1 (m4) and Young's modulus E1 (Pa) of the core material satisfy a mathematical expression (1) below:
E1I1/W≥80000 (1).

### Claim 5 (depends on 4)

The method of manufacturing a film roll body according to claim 4, wherein a corona treatment electrode is arranged, downstream from the nip roller in a film conveyance direction, on an opposed surface to a surface of the conveyance roller in contact with the film so as to sandwich a film conveyed between the nip roller and the conveyance roller.

### Claim 6 (depends on 4)

The method of manufacturing a film roll body according to claim 4, wherein
rotation frequency f2 (Hz), mass W2 (Kg), support length L2 (m), second moment of area I2 (m4), and Young's modulus E2 (Pa) of a conveyance roller arranged in proximity to the nip roller as well as rotation frequency f1 (Hz), mass W (Kg), and support length L1 (m) of the nip roller, and second moment of area I1 (m4) and Young's modulus E1 (Pa) of the core material satisfy mathematical expressions (2) and (3) below:
20
≥
W
(
f
e
/
f
1
)
2
-
1
(
2
)
20
≥
W
2
(
f
e
/
f
2
)
2
-
1
⁢
⁢
where
(
3
)
f
e
2
=
1
2
⁢
{
f
02
2
+
f
01
2
+
m
0
⁢
f
02
2
+
(
f
02
2
+
f
01
2
+
m
0
⁢
f
02
2
)
2
-
4
⁢
f
01
2
⁢
f
02
2
}
(
4
)
m
0
≡
W
2
W
,
f
01
≡
k
1
W
,
f
02
≡
k
2
W
2
⁢
(
5
)
k
n
≡
π
⁢
⁢
E
n
⁢
I
n
L
n
4
⁢
(
n
=
1
,
2
)
.
(
6
)

### Claim 7 (depends on 4)

The method of manufacturing a film roll body according to claim 4, wherein each of the nip roller and the conveyance rollers has a damper at an axial end of each of the nip roller and the conveyance rollers.