CN114292599A - Structure of color explosion-proof membrane and method for reducing color difference of color explosion-proof membrane - Google Patents
Structure of color explosion-proof membrane and method for reducing color difference of color explosion-proof membrane Download PDFInfo
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- CN114292599A CN114292599A CN202111571324.7A CN202111571324A CN114292599A CN 114292599 A CN114292599 A CN 114292599A CN 202111571324 A CN202111571324 A CN 202111571324A CN 114292599 A CN114292599 A CN 114292599A
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Abstract
The invention provides a structure of a color explosion-proof membrane and a method for reducing color difference of the color explosion-proof membrane, which comprises a release layer, an OCA layer, a color ink layer, a base material layer and a PE protective membrane which are sequentially laminated; therefore, the color paste can be uniformly coated, MD (longitudinal) and TD (transverse) stripes of the color ink layer are avoided, and the color difference of the color explosion-proof film is effectively reduced.
Description
Technical Field
The invention relates to the technical field of color explosion-proof membranes, in particular to a structure of a color explosion-proof membrane and a method for reducing color difference of the color explosion-proof membrane.
Background
With the increasing complete functions of the smart phone, the performance of the smart phone is gradually improved. When the cost performance of mobile phones of different brands is great, various modes are searched for to distinguish the mobile phones from other mobile phones, and the identification degree and the personality ability of the mobile phones are improved. And a colored decorative film is used on the rear cover of the mobile phone. However, when the color anti-explosion film is manufactured, due to the fact that the requirements for low thickness of the color coating are improved due to different coating modes, the requirements of the original coating technology are difficult to meet, and therefore, the anilox roller is used for coating, so that the ultrathin color coating with the thickness of 2-10 microns can be coated, and the color anti-explosion film can be manufactured conveniently through subsequent coating.
However, due to the underdeveloped existing technology, the coating is too thin, and is easy to cause regular or irregular MD (longitudinal direction) stripes due to the problem of color paste viscosity during coating; when the coating is finished and rolled by a conventional anilox roll, dense stripes in TD (transverse direction) are easily generated. In the most severe case, both MD (longitudinal) and TD (transverse) stripes appear in a grid pattern. Under the condition of too low viscosity, block coating spots are easy to appear, and when the viscosity is too high, screen roll marks are easy to appear, so that color difference is easy to appear in the color explosion-proof film prepared by subsequent coating, and therefore a method for reducing stripes generated by coating and the color difference of the color explosion-proof film is attempted to be found.
Disclosure of Invention
In order to solve the technical problems, the invention provides a structure of a color explosion-proof membrane and a method for reducing color difference of the color explosion-proof membrane, which ensure that color paste can be uniformly coated, avoid the occurrence of MD (longitudinal) and TD (transverse) stripes of a color ink layer and effectively reduce the color difference of the color explosion-proof membrane.
The invention provides a structure of a colorful explosion-proof membrane, which comprises a release layer, an OCA layer, a colorful printing ink layer, a base material layer and a PE protective membrane which are sequentially stacked.
The invention provides a structure of a color explosion-proof membrane and a method for reducing color difference of the color explosion-proof membrane, which can ensure that color paste can be uniformly coated, avoid the occurrence of MD (longitudinal) and TD (transverse) stripes of a color ink layer and effectively reduce the color difference of the color explosion-proof membrane.
As the preferred technical scheme, the thickness of substrate layer is 25um-100 um.
As the preferred technical scheme, the thickness of the colored ink layer is 2um-15 um.
The invention also provides a method for reducing the chromatic aberration of the color rupture membrane, which is used for manufacturing the structure of the color rupture membrane and comprises the following steps:
s1 adding color ink, solvent and thickening resin into gloss oil to prepare color paste, and controlling the viscosity of the color paste not to exceed the set viscosity range by using an observation cup to obtain the color paste with corresponding viscosity;
s2, adding color paste with corresponding viscosity into a glue tank, wetting an anilox roller, and circularly wetting the anilox roller;
s3, the base material layer to be coated is attached to the anilox roller, the color paste with corresponding viscosity is coated on the base material layer by the anilox roller to form a color ink layer, and then the color ink layer is sent to an oven to be dried to prepare the anti-explosion membrane base film.
As a preferred technical scheme, the method also comprises the following steps:
coating OCA coating liquid on the surface of the color ink layer of the base membrane of the explosion-proof membrane to form an OCA layer;
coating a release layer on the surface of the OCA layer;
and coating and forming a PE protective film on the surface of the base material layer.
As a preferred technical scheme, the solvent is any one or more of toluene, butanone and methyl isobutyl ketone.
As a preferred technical scheme, the viscosity of the color paste with the corresponding viscosity is 5s-30 s.
As a preferred technical scheme, the substrate layer is a PET film.
As a preferable technical scheme, the mesh number of the anilox roller is 50-200 meshes.
According to a preferable technical scheme, the number 3 of the coanda cup is set, and the set viscosity range of the number 3 of the coanda cup is 20-250 mm/s.
As a preferred technical scheme, the anilox on the anilox roller is uniformly distributed on the surface of the anilox roller in a thread shape.
The invention provides a structure of a color explosion-proof membrane and a method for reducing color difference of the color explosion-proof membrane, which can ensure that color paste can be uniformly coated, avoid the occurrence of MD (longitudinal) and TD (transverse) stripes of a color ink layer and effectively reduce the color difference of the color explosion-proof membrane.
Drawings
FIG. 1 is a structural view of a structure of a color burst disk;
FIG. 2 is a block diagram of an anilox roll;
wherein, 1-a release layer; a 2-OCA layer; 3-a colored ink layer; 4-a substrate layer; 5-PE protective film; 6-anilox roll; 7-reticulate pattern.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the structure of the color rupture disk and the method for reducing the color difference of the color rupture disk of the present invention are further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a structure of a color burst-proof film, which comprises a release layer 1, an OCA layer 2, a color ink layer 3, a substrate layer 4 and a PE protection film 5, which are sequentially stacked.
The thickness of the base material layer 4 is 25um-100 um; the thickness of the substrate layer 4 is preferably 50 um.
The thickness of the color ink layer 3 is 2um-15 um; preferably 5 um.
The substrate layer is preferably a transparent PET film.
As shown in fig. 2, the present invention provides an anilox roller, wherein the anilox 7 on the anilox roller 6 is uniformly distributed on the surface of the anilox roller in a screw shape; the mesh number of the anilox roller is 50-200 meshes, and the mesh number of the anilox roller is preferably 70 meshes.
Example 1
A method for reducing chromatic aberration of a color rupture disk is used for manufacturing the structure of the color rupture disk, and comprises the following steps:
s1, adding olive green ink, methylbenzene and thickening resin into gloss oil to prepare olive green color paste, and controlling the viscosity of the olive green color paste to be 5S by using a No. 3 Zener cup to obtain the olive green color paste with corresponding viscosity;
s2, adding the olive green color paste with the corresponding viscosity into a glue tank, wetting the anilox roller 6, and circularly wetting the anilox roller 6;
s3, the substrate layer 4 to be coated is attached to the anilox roller 6, the anilox roller 6 with 70 meshes of the anilox roller 6 coats the olive green color paste with corresponding viscosity on the transparent PET film to form the olive green ink layer 3, and then the olive green ink layer is sent to an oven to be dried to prepare the base film of the anti-explosion film. The olive green ink layer had a thickness of 7 μm, no visible MD (machine direction) and TD (transverse direction) streaks, and no noticeable color difference.
Example 2
A method for reducing chromatic aberration of a color rupture disk is used for manufacturing the structure of the color rupture disk, and comprises the following steps:
s1 adding blue ink, butanone and thickening resin into the gloss oil to prepare blue color paste, and controlling the viscosity of the blue color paste to be 10S by using a No. 3 cup to obtain the blue color paste with corresponding viscosity;
s2, adding the blue color paste with the corresponding viscosity into a glue tank, wetting the anilox roller 6, and circularly wetting the anilox roller 6;
s3, the transparent PET film to be coated is attached to the anilox roller 6, the anilox roller with 110 meshes of the anilox roller 6 coats the blue color paste with corresponding viscosity on the base material layer 4 to form the blue ink layer 3, and then the blue ink layer 3 is sent to an oven to be dried to prepare the blue anti-explosion film base film. The thickness of the blue ink layer is 5 mu m, no MD (longitudinal direction) and TD (transverse direction) stripes are visible to the naked eye, and no obvious color difference exists.
Example 3
The invention also provides a method for reducing the chromatic aberration of the color rupture membrane, which is used for manufacturing the structure of the color rupture membrane and comprises the following steps:
s1 adding light red ink, methyl isobutyl ketone and thickening resin into gloss oil to prepare light red color paste, and controlling the viscosity of the color paste to be 19S by using a No. 3 Zener cup to obtain the light red color paste with corresponding viscosity;
s2, adding the light red color paste with the corresponding viscosity into a glue tank, wetting the anilox roller 6, and circularly wetting the anilox roller 6;
s3, the transparent PET film to be coated is attached to an anilox roller 6, the anilox roller 6 with 120 meshes of the anilox roller 6 coats the light red color paste with corresponding viscosity on the transparent PET film to form a light red ink layer 3, and then the light red ink layer 3 is sent to an oven to be dried to prepare a light red anti-explosion film base film; the thickness of the light red base membrane of the explosion-proof membrane is 4-5 mu m, and the light red base membrane has slight MD stripes which can not be seen by naked eyes and has no obvious color difference.
Example 4
The invention also provides a method for reducing the chromatic aberration of the color rupture membrane, which is used for manufacturing the structure of the color rupture membrane and comprises the following steps:
s1 adding blue-black ink, a mixed solvent of toluene, butanone and methyl isobutyl ketone and thickening resin into the gloss oil to prepare blue-black color paste, and controlling the viscosity of the color paste to be 30S by using a No. 3 Zener cup to obtain the blue-black color paste with corresponding viscosity;
s2, adding blue-black color paste with corresponding viscosity into a glue tank, wetting the anilox roller 6, and circularly wetting the anilox roller 6;
s3, the transparent PET film to be coated is attached to an anilox roller 6, the anilox roller 6 with 70 meshes of the anilox roller 6 coats blue black color paste with corresponding viscosity on the transparent PET film to form a blue black ink layer 3, and then the blue black ink layer is sent to an oven to be dried to prepare a blue black anti-explosion film base film; the thickness of the blue-black base membrane of the explosion-proof membrane is 6 mu m, and the blue-black base membrane has slight MD stripes which can not be seen by naked eyes and has no obvious color difference.
Comparative example 1
Comparative example 1 provides a method for reducing chromatic aberration of a color rupture membrane, which is used for manufacturing the structure of the color rupture membrane for reducing chromatic aberration, and comprises the following steps:
s1, adding blue-black ink into the gloss oil to obtain blue-black color paste;
s2, adding the blue-black color paste into a glue tank, and wetting the conventional anilox roller 6;
s3, the transparent PET film to be coated is attached to a conventional anilox roller 6, blue-black color paste with the viscosity of 40S is coated on the transparent PET film by the conventional anilox roller with the mesh number of 260 meshes to form a blue-black ink layer 3, and then the blue-black ink layer is sent into an oven to be dried to prepare the blue-black anti-explosion film base film; the thickness of the blue-black base membrane of the explosion-proof membrane is 16 mu m, the base membrane has obvious MD (vertical) direction stripes and TD (transverse) stripes, and is in a grid shape, and the color difference is obvious.
Comparative example 2
Comparative example 2 provides a method for reducing chromatic aberration of a color rupture membrane, which is used for manufacturing the structure of the color rupture membrane for reducing chromatic aberration, and comprises the following steps:
s1, adding olive green ink into the gloss oil to obtain olive green color paste;
s2, adding the olive green color paste into a glue tank, and wetting the conventional anilox roller 6;
s3, the transparent PET film to be coated is attached to a conventional anilox roller 6, the conventional anilox roller 6 with the mesh number of 45 meshes is used for coating olive green color paste with the viscosity of 3S on the transparent PET film to form an olive green ink layer 3, and then the olive green ink layer is sent into an oven to be dried to prepare an olive green anti-explosion film base film; the thickness of the olive green explosion-proof membrane base membrane is 8 mu m, the base membrane has obvious MD (vertical) direction stripes and TD (transverse) stripes, the base membrane is in a grid shape, and the color difference is obvious. The properties of the base membranes of the explosion-proof films of examples 1 to 4 and comparative examples 1 to 2 are as follows:
TABLE 1 Properties of base Membrane of explosion-proof Membrane for examples 1-4 and comparative examples 1-2
It can be observed from table 1 that the color paste can be uniformly distributed on the PET base film by means of the technical characteristics of the formula of the color paste, the preparation steps of the base film of the rupture membrane, the control of the viscosity of the color paste by an inspection cup, the mesh number of the anilox roller 6 and the uniform distribution of the anilox 7 on the anilox roller 6 in a thread shape on the surface of the anilox roller 6, so that the stripes caused by coating the color paste are reduced or even eliminated, and the prepared color ink layer has no obvious stripes which can be seen by naked eyes in the MD (longitudinal direction) and the TD direction (transverse direction) and has no obvious color difference.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all modifications and equivalents falling within the scope of the appended claims. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The utility model provides a structure of colored rupture membrane which characterized in that, including the release layer, OCA layer, colored printing ink layer, substrate layer and the PE protection film that stacks gradually.
2. The structure of the color rupture film according to claim 1, wherein the thickness of the substrate layer is 25um-100 um.
3. The structure of the color explosion-proof membrane according to claim 1, wherein the thickness of the color ink layer is 2um-15 um.
4. A method for reducing chromatic aberration of a colored rupture disk, which is used for manufacturing the structure of the colored rupture disk as claimed in any one of claims 1 to 3, and is characterized by comprising the following steps:
s1 adding color ink, solvent and thickening resin into gloss oil to prepare color paste, and controlling the viscosity of the color paste not to exceed the set viscosity range by using an observation cup to obtain the color paste with corresponding viscosity;
s2, adding color paste with corresponding viscosity into a glue tank, wetting an anilox roller, and circularly wetting the anilox roller;
s3, the base material layer to be coated is attached to the anilox roller, the color paste with corresponding viscosity is coated on the base material layer by the anilox roller to form a color ink layer, and then the color ink layer is sent to an oven to be dried to prepare the anti-explosion membrane base film.
5. The method for reducing the color difference of the color explosion-proof film according to claim 4, wherein the solvent is any one or more of toluene, butanone and methyl isobutyl ketone.
6. The method for reducing the color difference of the color explosion-proof film according to claim 4, wherein the viscosity of the color paste with the corresponding viscosity is 5s-30 s.
7. The method for reducing the chromatic aberration of the colored explosion-proof film as claimed in claim 4, wherein the substrate layer is a PET film.
8. The method for reducing the color difference of the color explosion-proof film according to claim 4, wherein the mesh number of the anilox roller is 50-200 meshes.
9. The method for reducing chromatic aberration of the color rupture film according to claim 4, wherein the conus is a # 3 conus, and the set viscosity range of the # 3 conus is 20-250 mm/s.
10. The method for reducing the color difference of the color explosion-proof film as claimed in claim 4, wherein the reticulation patterns on the reticulation roller are uniformly distributed on the surface of the reticulation roller in a thread shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111571324.7A CN114292599A (en) | 2021-12-21 | 2021-12-21 | Structure of color explosion-proof membrane and method for reducing color difference of color explosion-proof membrane |
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| CN202111571324.7A CN114292599A (en) | 2021-12-21 | 2021-12-21 | Structure of color explosion-proof membrane and method for reducing color difference of color explosion-proof membrane |
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