CN110843369A - Die-free press polished grating film and manufacturing process thereof - Google Patents
Die-free press polished grating film and manufacturing process thereof Download PDFInfo
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- CN110843369A CN110843369A CN201911155582.XA CN201911155582A CN110843369A CN 110843369 A CN110843369 A CN 110843369A CN 201911155582 A CN201911155582 A CN 201911155582A CN 110843369 A CN110843369 A CN 110843369A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
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Abstract
The invention discloses a die-free press grating film which comprises a PET film, a transfer coating, a first zinc sulfide layer, an information layer and a second zinc sulfide layer which are sequentially overlapped, wherein the information layer is directly coated on the first zinc sulfide layer through a coating roller, each area of the coating roller has different depths, and the mesh number of each area of the coating roller is 120-350 meshes. The invention can produce various patterns without mould pressing and has no plate seam continuously, one coating plate roller can produce more than 200 kilometers, and the service life is long.
Description
Technical Field
The invention relates to the technical field of grating films, in particular to a die-free press grating film and a manufacturing process thereof.
Background
The traditional laser film manufacturing method needs photoetching plate making, namely, an information layer is obtained on a unit mother plate through laser engraving, the unit mother plate is made into a mould pressing mother plate, then the mould pressing mother plate is made into a working plate suitable for mould pressing equipment, the working plate is coated on a forming plate roller of the mould pressing equipment, and thus the information layer is impressed on a coating through the mould pressing equipment. At present, a mould pressing device is adopted to press and print an information layer when a grating film is manufactured, and the process has the defects of plate seams and waste to a certain extent; the working plate can only press 2 to 3 kilometers, and the working plate is directly scrapped after various dust impurities are stuck on the working plate. There is a need for improvement of the above problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a die-free press grating film and a manufacturing process thereof, various grating patterns can be manufactured without die pressing, no plate seam exists continuously, more than 200 kilometers can be produced by one coating plate roller, and the service life is long.
In order to achieve the purpose, the invention adopts the following technical scheme:
a non-mold press grating film comprises a PET film, a transfer coating, a first zinc sulfide layer, an information layer and a second zinc sulfide layer which are sequentially overlapped, wherein the information layer is directly coated on the first zinc sulfide layer through a coating roller, each area of the coating roller has different depths, and the mesh number of each area of the coating roller is 120-350 meshes.
The thickness of the PET film is 12-28 μm.
The transfer coating is a mixture of acrylic resin, cellulose and a solvent, the mass ratio of the acrylic resin to the cellulose to the solvent is 18:2:80, the solvent is a mixture of ethyl acetate, n-propyl acetate and propylene glycol methyl ether, and the mass ratio of the ethyl acetate to the n-propyl acetate to the propylene glycol methyl ether is 60:12: 8.
The first zinc sulfide layer and the second zinc sulfide layer are made of zinc sulfide, and the thickness of the first zinc sulfide layer and the thickness of the second zinc sulfide layer are 0.03-0.04 mu m.
The thickness of the information layer is 0.38-0.78 μm, and the thickness of the information layer is an integral multiple of the wavelength of visible light.
A manufacturing process of a die-free photogate film comprises the following steps:
a. coating a transfer coating on the PET film;
b. vacuum plating a first zinc sulfide layer on the transfer coating;
c. coating an information layer on the first zinc sulfide layer through a coating roller, wherein each area of the coating roller has different depths, and the mesh number of each area of the coating roller is 120-350 meshes;
d. and vacuum plating a second zinc disulfide layer on the information layer.
The drying temperature of the coating in the step a is 80 ℃, 135 ℃, 145 ℃, 135 ℃, 120 ℃, 90 ℃, the speed of the coating is 100-120m/min, and the coating weight is 7-7.5g/m2The coating mesh number of the anilox roller is 165 meshes, the transfer coating is a mixture of acrylic resin, cellulose and a solvent, the mass ratio of the acrylic resin to the cellulose to the solvent is 18:2:80, the solvent is a mixture of ethyl acetate, n-propyl acetate and propylene glycol methyl ether, and the mass ratio of the ethyl acetate to the n-propyl acetate to the propylene glycol methyl ether is 60:12: 8.
The drying temperature of the coating in the step c is 80 ℃, 135 ℃, 145 ℃, 135 ℃, 120 ℃, 90 ℃, the speed of the coating is 100 and 120m/min, and the coating weight of each area of the coating roller is 2.8-10.5g/m2And c, the coating liquid used in the step c is a mixture of acrylic resin, cellulose and a solvent, the mass ratio of the acrylic resin to the cellulose to the solvent is 9:1:90, the solvent is a mixture of ethyl acetate, n-propyl acetate and propylene glycol methyl ether, and the mass ratio of the ethyl acetate to the n-propyl acetate to the propylene glycol methyl ether is 67:14: 9.
The invention has the beneficial effects that: the depth of meshes in each area of the coating roller is different, the corresponding coating thicknesses are different, the wavelength range of visible light is 380-780nm, the thickness of the coating reflects the distance between two reflecting layers (namely two zinc sulfide layers), and the reflection of specific wavelength is enhanced in different areas by utilizing the interference effect of the reflected light of the upper reflecting layer and the lower reflecting layer in the areas with different thicknesses, so that a grating pattern corresponding to the coating thickness is obtained. The invention can produce various patterns without mould pressing and has no plate seam continuously, one coating plate roller can produce more than 200 kilometers, and the service life is long.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: a PET film 1, a transfer coating layer 2, a first zinc sulfide layer 3, a coating information layer 4 and a second zinc sulfide layer 5.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1, the non-molding press grating film comprises a PET film 1, a transfer coating layer 2, a first zinc sulfide layer 3, an information layer 4 and a second zinc sulfide layer 5 which are sequentially stacked, wherein the information layer 4 is directly coated on the first zinc sulfide layer 3 through a coating plate roller, each area of the coating plate roller has different depths, and the mesh number of each area of the coating plate roller is 120-350 meshes. The different mesh areas correspond to different grammage of the coating, and the areas are matched to form patterns.
The thickness of the PET film 1 is 12-28 μm.
The transfer coating 2 is a mixture of acrylic resin, cellulose and a solvent, the mass ratio of the acrylic resin to the cellulose to the solvent is 18:2:80, the solvent is a mixture of ethyl acetate, n-propyl acetate and propylene glycol methyl ether, and the mass ratio of the ethyl acetate to the n-propyl acetate to the propylene glycol methyl ether is 60:12: 8. The solid content of the transfer coating 2 was 20%.
The first zinc sulfide layer 3 and the second zinc sulfide layer 5 are made of zinc sulfide, and the thickness of the first zinc sulfide layer 3 and the second zinc sulfide layer 5 is 0.03-0.04 mu m. The two zinc sulfide layers have the effect of fixing the pattern of the coated information layer and also have the function of enhancing reflection.
The thickness of the information layer 4 is 0.38-0.78 μm and the thickness of the information layer 4 is an integer multiple of the wavelength of visible light. The various regions in the information layer 4 have different depths, each region being capable of intensifying a certain visible light (integer multiple of the wavelength) corresponding thereto.
A manufacturing process of a die-free photogate film comprises the following steps:
a. coating a transfer coating 2 on the PET film 1;
b. vacuum plating a first zinc sulfide layer 3 on the transfer coating 2;
c. coating an information layer 4 on the first zinc sulfide layer 3 through a coating roller, wherein each area of the coating roller has different depths, and the mesh number of each area of the coating roller is 120-350 meshes;
d. a second zinc sulphide layer 5 is vacuum coated on the information layer 4.
The drying temperature of the coating in the step a is 80 ℃, 135 ℃, 145 ℃, 135 ℃, 120 ℃, 90 ℃, the speed of the coating is 100-120m/min, and the coating weight is 7-7.5g/m2The coating mesh number of the anilox roller is 165 meshes, and the transfer coating layer 2 is a mixture of acrylic resin, cellulose and a solvent, wherein the acrylic resin isThe mass ratio of the cellulose to the solvent is 18:2:80, the solvent is a mixture of ethyl acetate, n-propyl acetate and propylene glycol methyl ether, and the mass ratio of the ethyl acetate, the n-propyl acetate and the propylene glycol methyl ether is 60:12: 8.
The drying temperature of the coating in the step c is 80 ℃, 135 ℃, 145 ℃, 135 ℃, 120 ℃, 90 ℃, the speed of the coating is 100 and 120m/min, and the coating weight of each area of the coating roller is 2.8-10.5g/m2And c, the coating liquid used in the step c is a mixture of acrylic resin, cellulose and a solvent, the mass ratio of the acrylic resin to the cellulose to the solvent is 9:1:90, the solvent is a mixture of ethyl acetate, n-propyl acetate and propylene glycol methyl ether, and the mass ratio of the ethyl acetate to the n-propyl acetate to the propylene glycol methyl ether is 67:14: 9. The solid content in the step is 10%, and the color-developing effect is good.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The die-free press grating film is characterized by comprising a PET film (1), a transfer coating (2), a first zinc sulfide layer (3), an information layer (4) and a second zinc sulfide layer (5) which are sequentially stacked, wherein the information layer (4) is directly coated on the first zinc sulfide layer (3) through a coating plate roller, each area of the coating plate roller has different depths, and the mesh number of each area of the coating plate roller is 120-350 meshes.
2. A matted photogate film according to claim 1, wherein the thickness of the PET film (1) is 12-28 μm.
3. The die-free photogate film as claimed in claim 1, wherein the transfer coating (2) is a mixture of acrylic resin, cellulose and a solvent, the mass ratio of the acrylic resin, the cellulose and the solvent is 18:2:80, the solvent is a mixture of ethyl acetate, n-propyl acetate and propylene glycol methyl ether, and the mass ratio of the ethyl acetate, the n-propyl acetate and the propylene glycol methyl ether is 60:12: 8.
4. A stamper-less photogate film as claimed in claim 1, wherein the composition of the first zinc sulfide layer (3) and the second zinc sulfide layer (5) is zinc sulfide, and the thickness of the first zinc sulfide layer (3) and the second zinc sulfide layer (5) is 0.03-0.04 μm.
5. A stamper-less grating film as claimed in claim 1, characterized in that the thickness of the information layer (4) is 0.38-0.78 μm and the thickness of the information layer (4) is an integer multiple of the wavelength of visible light.
6. A process for making a die-less photogate film as claimed in any one of claims 1 to 5, comprising the steps of:
a. coating a transfer coating (2) on the PET film (1);
b. vacuum plating a first zinc sulfide layer (3) on the transfer coating (2);
c. coating an information layer (4) on the first zinc sulfide layer (3) through a coating roller, wherein each area of the coating roller has different depths, and the mesh number of each area of the coating roller is 120-350 meshes;
d. and a second zinc disulfide layer (5) is plated on the information layer (4) in a vacuum manner.
7. The process as claimed in claim 6, wherein the drying temperature of the coating in step a is 80 ℃, 135 ℃, 145 ℃, 135 ℃, 120 ℃, 90 ℃, the speed is 100-120m/min, and the coating weight is 7-7.5g/m2The coating mesh number of the anilox roller is 165 meshes, the transfer coating (2) is a mixture of acrylic resin, cellulose and a solvent, the mass ratio of the acrylic resin to the cellulose to the solvent is 18:2:80, the solvent is a mixture of ethyl acetate, n-propyl acetate and propylene glycol methyl ether, and the mass ratio of the ethyl acetate to the n-propyl acetate to the propylene glycol methyl ether is 60:12: 8.
8. The die-less photogate film of claim 6The manufacturing process is characterized in that the coating drying temperature in the step c is 80 ℃, 135 ℃, 145 ℃, 135 ℃, 120 ℃ and 90 ℃, the vehicle speed is 100 ℃ and 120m/min, and the coating weight of each area of the coating plate roller is 2.8-10.5g/m2And c, the coating liquid used in the step c is a mixture of acrylic resin, cellulose and a solvent, the mass ratio of the acrylic resin to the cellulose to the solvent is 9:1:90, the solvent is a mixture of ethyl acetate, n-propyl acetate and propylene glycol methyl ether, and the mass ratio of the ethyl acetate to the n-propyl acetate to the propylene glycol methyl ether is 67:14: 9.
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| CN110843369B (en) | 2021-10-22 |
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