An optical film transport recovery device, a method, and an optical film manufacturing system

Abstract

The present invention provides an optical film transport recovery apparatus, a method, and an optical film manufacturing system that can be easily peeled off and is automatically recovered by electrostatically adsorbing an optical film on a conveyance sheet. The transport recovery device (3) includes a belt conveyor (31), an electricity remover (34) and a peeling mechanism (36). The belt conveyor (31) is used for conveying the conveying sheet on the conveying surface (32) in a state where the optical film (30) is adsorbed on the conveying sheet (20) by static electricity. An electrical appliance (34) is used for de-energizing the conveying sheet (20) and the optical film (30) conveyed by the belt conveyor. The peeling mechanism (36) is used for peeling off the transport sheet (20) and the optical film (30) by removing the electricity. The electricity remover is used for removing electricity of portions, separating from the conveying surface (32), of the transport sheet (20) and the optical film when said two are separated.

Description

technical field [0001] The present invention relates to a method for conveying a conveyance sheet on a conveyance surface in a state where an optical film is adsorbed to the conveyance sheet by static electricity, peeling the optical film from the conveyance sheet, and recovering the optical film An optical film conveying and recycling device, an optical film manufacturing system and an optical film conveying and recycling method are disclosed. Background technique [0002] Various optical films such as polarizing plates and phase plates are used in display devices such as liquid crystal display devices and organic EL display devices. In the manufacturing process of such an optical film, after making a long sheet (material roll) on which a plurality of film layers are laminated, the sheet is cut into a desired shape to obtain a plurality of optical films. . [0003] In Patent Document 1 (Japanese Unexamined Patent Publication No. 2012-194375 ), a method is disclosed: after...

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Problems solved by technology

[0005] However, it is difficult to automate the operation of collecting good-quality optical films as described above.

Therefore, it is necessary to carry out such an operation: multiple operators confirm whether the optical film is qualified by visual inspection, and only collect qualified products, and many operators need to be deployed

In particular, when the size of the desired optical film is small, the number of optical films obtained by cutting the intermediate body increases, and therefore more operators are required.

In addition, if the size of the desired optical film changes, the number of required operators also changes, so there is also a problem that it is difficult to adjust the number of operators.

[0006] In addition, in the cleaning stage of the conveyed sheet, the operation of peeling the adhesive tape from the conveyed sheet is also included, so it is difficult to automate, and it is necessary to deploy an additional operator to perform complicated operations

In addition, since the adhesive tape is used, the used adhesive tape is discarded, so there is also a problem from the viewpoint of reducing the production cost.

[0007] Moreover, only the ends of the intermediate body are fixed to the conveyance sheet with the adhesive tape, and therefore, after the intermediate body is cut into many optical films, the optical films cannot be fixed on the conveyance sheet.

Therefore, after cutting the intermediate, it is necessary to carefully move the conveying sheet to avoid falling of many optical films obtained, which becomes a cause of a decrease in operating efficiency

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