CN112646509A - OCA optical cement and preparation method thereof - Google Patents
OCA optical cement and preparation method thereof Download PDFInfo
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- CN112646509A CN112646509A CN202011510799.0A CN202011510799A CN112646509A CN 112646509 A CN112646509 A CN 112646509A CN 202011510799 A CN202011510799 A CN 202011510799A CN 112646509 A CN112646509 A CN 112646509A
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- Prior art keywords
- release film
- oca optical
- layer
- protective film
- light
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/403—Adhesives in the form of films or foils characterised by release liners characterised by the structure of the release feature
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/045—Presence of homo or copolymers of ethene in the release coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/10—Presence of homo or copolymers of propene
- C09J2423/105—Presence of homo or copolymers of propene in the release coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2427/00—Presence of halogenated polymer
- C09J2427/005—Presence of halogenated polymer in the release coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/005—Presence of polyester in the release coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2469/00—Presence of polycarbonate
- C09J2469/005—Presence of polycarbonate in the release coating
Abstract
The invention discloses an OCA (optical clear adhesive) optical adhesive which comprises a first protective film layer, a light release film layer, an OCA optical adhesive layer, a heavy release film layer and a second protective film layer which are sequentially bonded from top to bottom, wherein the heavy release film layer and the light release film layer are both superposed with the OCA optical adhesive layer, the edge of the second protective film layer is opposite to the edge of the first protective film layer and is positioned on the outer side of the edge of the OCA optical adhesive layer, the viscosity between the first protective film layer and the light release film layer is larger than that between the light release film layer and the OCA optical adhesive layer, and the viscosity between the second protective film layer and the heavy release film layer is larger than that between the heavy release film layer and the OCA optical adhesive layer. The invention also discloses a preparation method of the OCA optical cement. The OCA glue line stripping device solves the technical problem of how to effectively protect the OCA glue line and enable the OCA glue line to be stripped conveniently, and has the advantages of being convenient to use and tear, capable of effectively guaranteeing the quality of the OCA glue line and the like.
Description
Technical Field
The invention relates to the technical field of optical cement, in particular to OCA optical cement and a preparation method thereof.
Background
The OCA optical adhesive is a special double-sided adhesive with optical transparency and no base material, and has the advantages of colorless transparency, light transmittance of over 90 percent, good bonding strength, capability of being cured at room temperature or middle temperature, small curing shrinkage and the like, so the OCA optical adhesive is widely used for bonding transparent optical elements such as lenses, liquid crystal display screens, touch screens and the like. The existing OCA optical cement is of a three-layer structure formed by bonding an upper layer of a light release layer, a middle layer of an OCA glue layer and a lower layer of a heavy release layer, wherein the sizes of the three layers are equal, obviously, firstly, the light release layer and the heavy release layer are not protected, so that the light release layer and the heavy release layer are easily polluted by foreign matters in the transportation process, and a customer needs to judge whether the pollution belongs to the OCA glue layer before using the optical cement, so that the optical cement is inconvenient to use and the use cost is increased, and the edges of the light release layer and the heavy release layer are easy to deform under the action of external force, so that the OCA glue layer is poor in quality and even scrapped; secondly because the size of lightly leaving type layer, OCA glue film and heavily leaving type layer the same, so not only lead to tearing inconvenience on the one hand, make the OCA glue film impaired when tearing moreover easily to lead to OCA glue film poor quality even scrap.
Disclosure of Invention
In view of the defects in the background art, the invention provides an OCA (optical clear adhesive) and a preparation method thereof, and aims to solve the technical problem of how to effectively protect an OCA adhesive layer and conveniently strip the OCA adhesive layer.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides an OCA optical cement, includes that top-down is adhesive first protection rete in proper order, light from type rete, OCA optical cement layer, heavily from type rete and second protection rete, heavily from type rete with light from type rete all with OCA optical cement layer coincidence, the edge of second protection rete with the edge of first protection rete is relative and is located the outside at the edge of OCA optical cement layer, first protection rete with it is greater than to lightly from the viscidity between the type rete light from type rete with viscidity between the OCA optical cement layer, second protection rete with it is greater than to heavily from the viscidity between the type rete with viscidity between the OCA optical cement layer.
In a preferred embodiment of the foregoing scheme, the thickness of the light release film layer is 30-50um, the thickness of the OCA optical adhesive layer is 100-200um, and the thickness of the heavy release film layer is 60-100 um.
In a preferred embodiment of the foregoing solution, the OCA optical adhesive layer is a toughened OCA optical adhesive layer with a shore hardness of 32 to 38 HS.
In a preferred embodiment of the above scheme, the thickness of the first protective film layer and the second protective film layer is 40-80 um.
In a preferred embodiment of the above scheme, the thickness of each of the first protective film layer and the second protective film layer is 60 um.
In a preferred embodiment of the above scheme, the light release film layer is one of a PET release film, a PVC release film, a PC release film, a PE release film, a PP release film, and an OPP release film with a release force of 5-15 g/f.
In a preferred embodiment of the above scheme, the heavy release film layer is one of a PET release film, a PVC release film, a PC release film, a PE release film, a PP release film, and an OPP release film with a release force of 20-80 g/f.
In a preferred embodiment of the foregoing solution, the distance between the edge of the first protective film layer and the edge of the second protective film layer and the edge of the OCA optical adhesive layer is 7-9 mm.
In a preferred embodiment of the foregoing solution, a distance between an edge of the first protective film layer and an edge of the second protective film layer and an edge of the OCA optical adhesive layer is 8 mm.
The invention also discloses a preparation method of the OCA optical cement, which comprises the following steps:
step S1, cutting the light release film, the OCA optical cement, the heavy release film, the first protective film and the second protective film into small rolls from a large roll by using a slitting machine;
step S2, sequentially adhering the light release film, the OCA optical adhesive and the heavy release film together from top to bottom by using an adhesive machine;
step S3, cutting the light release film, the OCA optical cement and the heavy release film which are bonded together according to the required size by using a cutting machine;
step S4, bonding the light release film, OCA optical cement and heavy release film which are bonded together and cut into required size between the first protective film and the second protective film at intervals by using a bonding machine, wherein the viscosity of the bonding machine is larger than that of the bonding machine used in the step S2, and the edges of the first protective film and the second protective film are correspondingly positioned at the outer sides of the light release film and the heavy release film after bonding;
step S5, cutting the first protective film and the light release film and the heavy release film second protective film connecting the adjacent light release film, OCA optical adhesive and heavy release film with a cutting machine according to the requirement that the edge of the first protective film and the edge of the second protective film respectively protrude the light release film and the heavy release film.
The invention has the beneficial effects that: through correspond bonding edge on light from type rete and heavy type rete and be located first protection rete and second protection rete in the outside separately, and make first protection rete and light from the viscidity between the type rete be greater than light from the viscidity between type rete and the OCA optical cement layer, second protection rete and heavy from the viscidity between the type rete be greater than heavy from the viscidity between type rete and the OCA optical cement layer, thereby realized effectively protecting the OCA glue film, and make its technological effect that can conveniently strip out. Compared with the prior art, convenient to use tears the convenience to the quality of OCA glue film has effectively been guaranteed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the reference numbers in the figures illustrate: 1. the optical film comprises a first protective film layer, a light release film layer, an OCA optical adhesive layer, a heavy release film layer, a second protective film layer and a third protective film layer, wherein the first protective film layer is 2, the light release film layer is 3, the OCA optical adhesive layer is 4, the heavy release film layer is 5, and the second protective film layer is 5.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to FIG. 1: the utility model provides a OCA optical cement, including top-down adhesive first protection rete 1 in proper order, light from type rete 2, OCA optical cement layer 3, heavily from type rete 4 and second protection rete 5, heavily from type rete 4 and light from type rete 2 all with OCA optical cement layer 3 coincidence, the edge of second protection rete 5 and the edge of first protection rete 1 are relative and lie in the outside at the edge of OCA optical cement layer 3, first protection rete 1 and the light viscidity of leaving between type rete 2 are greater than the light viscidity of leaving between type rete 2 and OCA optical cement layer 3, second protection rete 5 and the heavy viscidity of leaving between type rete 4 are greater than the heavy viscidity of leaving between type rete 4 and OCA optical cement layer 3. In this embodiment, through the setting that corresponds bonding edge and be located the first protection film and the second protection film in each outside on light from type rete 2 and heavy from type rete 4, not only effectively solved light from type rete 2 and heavy use inconvenience and use cost increase's that leads to after polluting from the type membrane problem, realized carrying out effective protective technological effect to the OCA glue film moreover. Through first protection rete 1 again with light from the viscidity between type rete 2 be greater than light from the viscidity between type rete 2 and OCA optical cement layer 3, second protection rete 5 with heavily from the viscidity between type rete 4 be greater than heavily from the setting of the viscidity between type rete 4 and OCA optical cement layer 3, realized the convenient technological effect of shelling out of OCA glue layer.
In a preferred embodiment of the present invention, the thickness of the light release film layer 2 is 30-50um, the thickness of the OCA optical adhesive layer 3 is 100-200um, the thickness of the heavy release film layer 4 is 60-100um, and the light release film layer 2 is one of a PET release film, a PVC release film, a PC release film, a PE release film, a PP release film, and an OPP release film with a release force of 5-15 g/f; heavily from type rete 4 for from the type power 20-80g/f PET from type membrane, PVC from type membrane, PC from type membrane, PE from type membrane, PP from type membrane, OPP from one of the type membrane, set up like this and make and can not take OCA optical adhesive layer 3 when tearing light from type rete 2 or heavily from type rete 4 to can play the guard action of preferred to the OCA glue film.
In a preferred embodiment of the present invention, the OCA optical adhesive layer 3 is a toughened OCA optical adhesive layer 3 with shore hardness of 32-38HS, so that the toughness and strength of the OCA optical adhesive layer 3 are effectively improved, and the practicability is good.
In a preferred embodiment of the present invention, the thickness of each of the first protective film layer 1 and the second protective film layer 5 is 40-80um, preferably 60 um.
In a preferred embodiment of the present invention, the distance between the edge of the first and second protective film layers 1 and 5 and the edge of the OCA optical cement layer 3 is 7-9mm, preferably 8 mm.
The preparation method of the OCA optical cement comprises the following steps:
step S1, cutting the light release film, the OCA optical cement, the heavy release film, the first protective film and the second protective film into small rolls from a large roll by using a slitting machine;
step S2, sequentially adhering the light release film, the OCA optical adhesive and the heavy release film together from top to bottom by using an adhesive machine;
step S3, cutting the light release film, the OCA optical cement and the heavy release film which are bonded together according to the required size by using a cutting machine;
step S4, bonding the light release film, OCA optical cement and heavy release film which are bonded together and cut into required size between the first protective film and the second protective film at intervals by using a bonding machine, wherein the viscosity of the bonding machine is larger than that of the bonding machine used in the step S2, and the edges of the first protective film and the second protective film are correspondingly positioned at the outer sides of the light release film and the heavy release film after bonding;
step S5, cutting the first protective film and the light release film and the heavy release film second protective film connecting the adjacent light release film, OCA optical adhesive and heavy release film with a cutting machine according to the requirement that the edge of the first protective film and the edge of the second protective film respectively protrude the light release film and the heavy release film.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The utility model provides an OCA optical cement, its characterized in that includes that top-down is adhesive first protection rete in proper order, light from type rete, OCA optical cement layer, heavily leaves type rete and second protection rete, heavily leave type rete with light leave type rete all with OCA optical cement layer coincidence, the edge of second protection rete with the edge of first protection rete is relative and is located the outside at the edge of OCA optical cement layer, first protection rete with light from the viscidity between the type rete is greater than light from the type rete with viscidity between the OCA optical cement layer, second protection rete with heavy from the viscidity between the type rete is greater than heavy from the type rete with viscidity between the OCA optical cement layer.
2. The OCA optical adhesive of claim 1, wherein the thickness of the light release film layer is 30-50um, the thickness of the OCA optical adhesive layer is 100-200um, and the thickness of the heavy release film layer is 60-100 um.
3. The OCA optical adhesive of claim 1, wherein the OCA optical adhesive layer is a toughened OCA optical adhesive layer having a shore hardness of 32-38 HS.
4. The OCA optical cement of claim 1, wherein the first protective film layer and the second protective film layer each have a thickness of 40-80 um.
5. The OCA optical cement of claim 4, wherein the first protective film layer and the second protective film layer are both 60um thick.
6. The OCA optical adhesive of claim 1, wherein the light release film layer is one of a PET release film, a PVC release film, a PC release film, a PE release film, a PP release film, and an OPP release film with a release force of 5-15 g/f.
7. The OCA optical adhesive of claim 1, wherein the heavy release film layer is one of PET release film, PVC release film, PC release film, PE release film, PP release film, and OPP release film with a release force of 20-80 g/f.
8. The OCA optical cement of claim 1, wherein the distance between the edges of the first and second protective film layers and the edges of the OCA optical cement layer is 7-9 mm.
9. The OCA optical cement of claim 9, wherein the distance between the edges of the first and second protective film layers and the edges of the OCA optical cement layer is 8 mm.
10. A method of making an OCA optical cement as claimed in claim 1, comprising the steps of:
step S1, cutting the light release film, the OCA optical cement, the heavy release film, the first protective film and the second protective film into small rolls from a large roll by using a slitting machine;
step S2, sequentially adhering the light release film, the OCA optical adhesive and the heavy release film together from top to bottom by using an adhesive machine;
step S3, cutting the light release film, the OCA optical cement and the heavy release film which are bonded together according to the required size by using a cutting machine;
step S4, bonding the light release film, OCA optical cement and heavy release film which are bonded together and cut into required size between the first protective film and the second protective film at intervals by using a bonding machine, wherein the viscosity of the bonding machine is larger than that of the bonding machine used in the step S2, and the edges of the first protective film and the second protective film are correspondingly positioned at the outer sides of the light release film and the heavy release film after bonding;
step S5, cutting the first protective film and the light release film and the heavy release film second protective film connecting the adjacent light release film, OCA optical adhesive and heavy release film with a cutting machine according to the requirement that the edge of the first protective film and the edge of the second protective film respectively protrude the light release film and the heavy release film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510799.0A CN112646509A (en) | 2020-12-18 | 2020-12-18 | OCA optical cement and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510799.0A CN112646509A (en) | 2020-12-18 | 2020-12-18 | OCA optical cement and preparation method thereof |
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| CN112646509A true CN112646509A (en) | 2021-04-13 |
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| CN202011510799.0A Pending CN112646509A (en) | 2020-12-18 | 2020-12-18 | OCA optical cement and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115895465A (en) * | 2022-11-14 | 2023-04-04 | 业成科技（成都）有限公司 | Optical cement structure and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204310999U (en) * | 2014-11-06 | 2015-05-06 | 东莞创先新材料科技有限公司 | A kind of OCA optical film |
| CN104685018A (en) * | 2012-08-02 | 2015-06-03 | Lg化学株式会社 | Adhesive film and method for encapsulating organic electronic device using same |
| CN107699146A (en) * | 2017-08-29 | 2018-02-16 | 东莞市纳利光学材料有限公司 | A kind of OCA optical cements and preparation method thereof |
| CN212152153U (en) * | 2020-04-27 | 2020-12-15 | 四川展新胶粘材料有限公司 | A method of treating a mammal, which method comprises the steps of: 1 optical film with sandwich structure |
-
2020
- 2020-12-18 CN CN202011510799.0A patent/CN112646509A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104685018A (en) * | 2012-08-02 | 2015-06-03 | Lg化学株式会社 | Adhesive film and method for encapsulating organic electronic device using same |
| CN204310999U (en) * | 2014-11-06 | 2015-05-06 | 东莞创先新材料科技有限公司 | A kind of OCA optical film |
| CN107699146A (en) * | 2017-08-29 | 2018-02-16 | 东莞市纳利光学材料有限公司 | A kind of OCA optical cements and preparation method thereof |
| CN212152153U (en) * | 2020-04-27 | 2020-12-15 | 四川展新胶粘材料有限公司 | A method of treating a mammal, which method comprises the steps of: 1 optical film with sandwich structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115895465A (en) * | 2022-11-14 | 2023-04-04 | 业成科技（成都）有限公司 | Optical cement structure and manufacturing method thereof |
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Application publication date: 20210413 |