Optical film laminate used for continuous lamination to panel component

Patent metadata

Field	Value
Publication number	US-10197709-B2
Application number	US-201515557688-A
Country	US
Kind code	B2
Filing date	Nov 4, 2015
Priority date	Mar 24, 2015
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

To provide a continuous web of optical film laminate provided with static electrification prevention function which allows for promptly attenuating static charge of optical film sheet and carrier film electrified by peeling action in RTP lamination method and apparatus. The problem has been solved with a continuous web of optical film laminate for using in RTP lamination method and apparatus, in which static electrification prevention function is provided to optical film sheets and a carrier film configuring the continuous web of optical film laminate, such that sheet resistance of each of the optical film sheets and the carrier film is 1012 Ω/sq or less so as to promptly attenuate static charge of the carrier film to be collected, which is statically electrified by peeling action, and the optical film sheets to be laminated to panel components, which are also statically electrified by peeling action.

First claim

The invention claimed is:

1. A continuous web of optical film laminate for using in continuous lamination to panel components, in which the panel components are conveyed in close vicinity of a continuous web of releasable film released from the continuous web of optical film laminate, the continuous web of optical film laminate comprising:
a continuous web of optical film in which an adhesive layer is formed on one surface thereof to be laminated at least to the panel components; and
the continuous web of releasable film in which a releasably treated layer is formed on a surface contacting with the adhesive layer, wherein a continuous web of a first conductive layer is intervened between the optical film and the adhesive layer and a continuous web of a second conductive layer is intervened between the releasable film and the releasably treated layer,
wherein the first conductive layer is not a panel electrode and the first conductive layer and the second conductive layer are formed with a material which provides static electrification prevention function, such that the optical film with the first conductive layer intervening between the optical film and the adhesive layer, and the releasable film with the second conductive layer intervening between the releasable film and the releasably treated layer, both have a sheet resistance as high as 10 12 Ω/sq.

2. The continuous web of optical film laminate as defined in claim 1 , characterized in that, the material which provides static electrification prevention function is one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

3. A wound roll comprising a continuous web of optical film laminate as defined in claim 1 .

4. A feeding roll for RTP lamination apparatus, characterized in that, the feeding roll is formed by slitting and winding the wound roll defined in claim 3 to a width corresponding to a long side or a short side of panel components to be used for RTP lamination apparatus.

5. A continuous web of optical film laminate for using in continuous lamination to panel components, in which the panel components are conveyed in close vicinity of a continuous web of releasable film released from the continuous web of optical film laminate, the continuous web of optical film laminate comprising:
a continuous web of optical film in which an adhesive layer is formed on one surface thereof to be laminated at least to the panel components; and
the continuous web of releasable film in which a releasably treated layer is formed on a surface contacting with the adhesive layer, wherein the optical film is intervened with a continuous web of a conductive layer between the optical film and the adhesive layer, and the releasable film is provided with conductive function on the releasably treated layer side,
wherein the conductive layer is not a panel electrode, and is formed with a material which provides static electrification prevention function, such that the optical film with the conductive layer intervening between the optical film and the adhesive layer, and the releasable film provided with the conductive function, both have a sheet resistance as high as 10 12 Ω/sq.

6. The continuous web of optical film laminate as defined in claim 5 , characterized in that, the material which provides static electrification prevention function is one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

7. The continuous web of optical film laminate as defined in claim 5 , characterized in that, the releasable film is a polyethylene terephthalate (PET) resin film including a material which provides static electrification prevention function.

8. The continuous web of optical film laminate as defined in claim 7 , characterized in that, the material which provides static electrification prevention function is one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

9. A wound roll comprising a continuous web of optical film laminate as defined in claim 5 .

10. A feeding roll for RTP lamination apparatus, characterized in that, the feeding roll is formed by slitting and winding the wound roll defined in claim 9 to a width corresponding to a long side or a short side of panel components to be used for RTP lamination apparatus.

11. A continuous web of optical film laminate for using in continuous lamination to panel components, in which the panel components are conveyed in close vicinity of a continuous web of releasable film released from the continuous web of optical film laminate, the continuous web of optical film laminate comprising:
a continuous web of optical film with a continuous web of a conductive adhesive layer formed on one surface thereof to be laminated at least to the panel components; and

the continuous web of releasable film with a releasably treated layer formed on a surface contacting with the conductive adhesive layer, wherein the releasable film is intervened with a continuous web of a conductive layer between the releasable film and the releasably treated layer,
wherein the conductive adhesive layer is not a panel electrode, and includes a material which provides static electrification prevention function, such that the optical film including the conductive adhesive layer, and the releasable film including the conductive layer, both have a sheet resistance as high as 10 12 Ω/sq.

12. The continuous web of optical film laminate as defined in claim 11 , characterized in that, the conductive adhesive layer is an acrylic adhesive layer including the material which provides static electrification prevention function.

13. The continuous web of optical film laminate as defined in claim 12 , characterized in that, the material which provides static electrification prevention function is one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

14. The continuous web of optical film laminate as defined in claim 11 , characterized in that, the conductive layer is formed with a material which provides static electrification prevention function.

15. The continuous web of optical film laminate as defined in claim 14 , characterized in that, the material which provides static electrification prevention function is one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

16. A wound roll comprising a continuous web of optical film laminate as defined in claim 11 .

17. A feeding roll for RTP lamination apparatus, characterized in that, the feeding roll is formed by slitting and winding the wound roll defined in claim 16 to a width corresponding to a long side or a short side of panel components to be used for RTP lamination apparatus.

18. A continuous web of optical film laminate for using in continuous lamination to panel components, in which the panel components are conveyed in close vicinity of a continuous web of releasable film released from the continuous web of optical film laminate, the continuous web of optical film laminate comprising:
a continuous web of optical film with a continuous web of a conductive adhesive layer formed on one surface thereof to be laminated at least to the panel components; and

the continuous web of releasable film with a releasably treated layer formed

Assignees

• Nitto Denko Corp

Inventors

• Morimoto Yu
• Toyama Yusuke
• Ishii Takaaki
• Kitada Kazuo
• Hashimoto Satoshi
• Nagura Akihiro

Classifications

• C08J7/0423

  with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder · CPC title

• G02F2202/22

  Antistatic materials or arrangements · CPC title

• B32B27/00 Primary

  Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)} · CPC title

• G02F1/1335

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title

• G02B5/3033

  in the form of a thin sheet or foil, e.g. Polaroid · CPC title