MANUFACTURING METHOD FOR OPTICAL LAMINATE AND MANUFACTURING APPARATUS FOR OPTICAL LAMINATE

Japanese Patent JP2021184086

A

To provide a manufacturing method for an optical laminate and a manufacturing apparatus for an optical laminate, by which the temperature unevenness in a width direction on a surface or a roll can be reduced and the problem of the quality of a bonding film can be reduced.SOLUTION: A manufacturing method for an optical laminate includes a bonding step of forming a bonding film from two different films through an adhesive of an energy line activation type, and an activating step of irradiating the bonding film with an energy line while bringing the bonding film into contact with the roll so as to activate the adhesive. A heat medium flow path for feeding a heat medium in the roll is provided. By heat medium circulating means, the temperature of the surface of the roll is adjusted. The heat medium flow path includes a main path extending in accordance with the entire region of an outer peripheral surface part of a roll main body part along a rotation shaft center, an introduction path for introducing the heat medium to the main path, a first discharge path connecting to the main path and discharging the heat medium flowing in the main path, and a second discharge path. The activating step includes an operation of feeding the heat medium into the heat medium flow path while the outer peripheral surface part rotates the roll main body part extending in a cylindrical shape.SELECTED DRAWING: Figure 1

MIURA HIDENOBU
KADO HIDEAKI
MIYAMURA ISAO
ISHIWATARI KAZUTAKA
OTAKI MASASHI
KUME ETSUO
KURAMOTO MASANAO

JP2021063706A

December 02, 2021

April 02, 2021

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SUMITOMO CHEMICAL CO

G02B5/30; B32B7/023; C09J171/02

Michiko Matsutani
Yoshida Tamaki

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