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Apparatus and method for forming strips of optical film laminate

A technology of optical film layers and laminates, applied in metal processing and other directions, can solve problems such as difficulty in suppressing local peeling of adhesive layers and release films

Active Publication Date: 2018-01-12
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this technology is not suitable for the optical film laminate that is the object of slitting in this application, that is, the optical film laminate that has an adhesive layer and a release film laminated on at least one side of the optical functional film, or at least one side of the optical functional film. An asymmetric optical film laminate in which an adhesive layer and a release film are laminated on one side of an optical functional film, and an asymmetric structure is laminated on the other side of the optical functional film and the above-mentioned one side , it is difficult to suppress local peeling between the adhesive layer and the release film

Method used

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  • Apparatus and method for forming strips of optical film laminate
  • Apparatus and method for forming strips of optical film laminate
  • Apparatus and method for forming strips of optical film laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] In the slitting machine of Example 1, a laminate support roll having a diameter of 98 mm on the outer peripheral surface against which the optical film laminate abuts and four grooves each having a diameter A first circular cutting knife having the same diameter as the outer peripheral surface. Second circular cutters having the same diameter as the first circular cutters are provided at positions corresponding to the respective first circular cutters. Therefore, the slitting machine in Embodiment 1 is equipped with four sets of first and second circular cutting knives. The knife tips of the first and second circular cutting knives are all acute-angled knife tips, and the angles of the knife tips are all made into 40 degrees. The distance between adjacent first circular cutters is 400 mm. The material of the first and second circular cutters is superhard material.

[0125] A strip-shaped optical film laminate with a width of 1330 mm is brought into contact with the o...

Embodiment 2

[0127] In the slitting machine of Example 2, the distance in the longitudinal direction at which the optical film laminate abuts against the outer peripheral surface of the laminate support roll was 12.8 mm (the angle of embrace was 15 degrees). Other conditions were the same as in Example 1.

Embodiment 3

[0129] In the slitting machine of Example 3, the diameter of the first circular cutter was made smaller than the diameter of the laminate support roll. The diameter of the first circular cutter is 96 mm. Other conditions were the same as in Example 1.

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PUM

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Abstract

The present invention provides an apparatus and method for forming strips of an optical film laminate, which can simultaneously improve the cutting accuracy of a wide strip-shaped optical film laminate and improve the slit strip-shaped optical film laminate The uniformity of the shape of the cutting surface at the end. This device includes: a laminate support roll having an outer peripheral surface in contact with the optical film laminate, and a plurality of grooves provided on the outer peripheral surface; a plurality of first circular cutters each having an acute blade Pointed, and installed in the laminated body supporting roll in the mode of being positioned at the inside of a plurality of groove parts; A plurality of second circular cutting knives, it respectively has acute angle blade point, and is arranged in relative to the optical film laminated body and a plurality of The corresponding position on the opposite side of the first cutting knife.

Description

technical field [0001] The present invention relates to an apparatus and method for forming optical film strips by cutting a strip-shaped optical film laminate into appropriate sizes. Background technique [0002] Optical functional films such as a polarizing film and a retardation film are used as optical components of an optical display device by being bonded to an optical display panel via an adhesive layer. Usually, a strip-shaped optical film laminate of a predetermined width including a release film, an adhesive layer, and an optical functional film is cut into a rectangular shape to form a sheet-shaped optical film laminate, and the release film is peeled off from the laminate, These optical functional films were thus obtained in a state with an adhesive layer. The strip-shaped optical film laminate having a predetermined width is formed by slitting a strip-shaped optical film laminate having a wider width than the predetermined width parallel to the longitudinal dir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B26D1/22
Inventor 仲井宏太金起台崔忠烨朴孝浚金世渶
Owner NITTO DENKO CORP
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