CN211079014U - High-reflection cover film and high-reflection adhesive film - Google Patents
High-reflection cover film and high-reflection adhesive film Download PDFInfo
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- CN211079014U CN211079014U CN201921751342.1U CN201921751342U CN211079014U CN 211079014 U CN211079014 U CN 211079014U CN 201921751342 U CN201921751342 U CN 201921751342U CN 211079014 U CN211079014 U CN 211079014U
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Abstract
The utility model provides a high reflection of light covers membrane and high reflection of light glued membrane, including the PET carrier film, the coating has the gloss oil layer on the PET carrier film, be equipped with the metal reflector layer on the gloss oil layer, it has the PI membrane to compound through gluing agent A on the metal reflector layer, it has from the type membrane to compound through gluing agent B on the PI membrane. The utility model has the characteristics of reduce production technology, improve the reflection of light rate.
Description
Technical Field
The utility model belongs to the technical field of the cover membrane technique and specifically relates to a high reflection of light covers membrane and high reflection of light glued membrane is related to.
Background
The FPC flexible printed circuit is a flexible printed circuit with high reliability and excellent flexibility which is made of polyimide or polyester film as a base material, and a white cover film is used for the backlight FPC, so that when an L ED lamp on the FPC is lightened, the product can increase the backlight brightness and improve the uniformity.
In the prior art, in order to improve the light reflection rate of L ED lamp strips, white ink is printed on a yellow cover film, but the printed white ink is uneven and deviated, the printing process is complicated, and the light reflection rate of the white ink is usually 60-80% and hardly exceeds 85%, so that the light reflection effect of L ED lamp strips is influenced.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a high reflection of light covers membrane and high reflection of light glued membrane has the characteristics that reduce production technology, improve the reflection of light rate.
In order to solve the technical problem, the utility model provides a high reflection of light covers membrane, including the PET carrier film, the coating has the gloss oil layer on the PET carrier film, be equipped with the metal reflector layer on the gloss oil layer, it has the PI membrane to compound through gluing agent A on the metal reflector layer, it has from the type membrane to compound through gluing agent B on the PI membrane.
Preferably, the metal used for the metal light reflecting layer is aluminum or silver or chromium.
Preferably, the thickness of the gloss oil layer is 1 to 50 μm.
Preferably, the thickness of the metal light reflecting layer is 0.001 to 5 μm.
Preferably, the thickness of the PI film is 5-50 μm.
Preferably, the thickness of the adhesive A is 1-20 μm; the thickness of the adhesive B is 10-30 mu m.
The invention also provides a high-light-reflection adhesive film which comprises a PET carrier film 1, wherein a gloss oil layer is coated on the PET carrier film, a metal light-reflection layer is arranged on the gloss oil layer, and a release film is compounded on the metal light-reflection layer through a coating adhesive A.
Preferably, the metal used for the metal light reflecting layer is aluminum or silver or chromium; the thickness of the metal reflecting layer is 0.001-5 mu m.
Preferably, the thickness of the gloss oil layer is 1 to 50 μm.
Preferably, the thickness of the adhesive A is 1-20 μm.
The utility model relates to a high reflection of light covers membrane and high reflection of light glued membrane compares with current design, and its advantage lies in: the utility model discloses use the metal reflector layer to replace traditional white printing ink printing, save the printing technology in the FPC manufacture process, the rate of reflection of light improves more than 90% simultaneously.
Drawings
Fig. 1 is a longitudinal section schematic view of the high light reflection cover film of the present invention.
Fig. 2 is a schematic longitudinal sectional view of the semi-finished product of the highly reflective cover film of the present invention.
The reference numbers are as follows:
the light-emitting device comprises a 1-PET carrier film, a 2-gloss oil layer, a 3-metal light reflecting layer, a 41-adhesive A, a 42-adhesive B, a 5-PI film and a 6-release film.
Detailed Description
The present invention relates to a highly reflective cover film, which is described in detail below with reference to the accompanying drawings 1-2 and the specific embodiments of the specification.
The utility model discloses high reflection of light covers the membrane and includes: the PET carrier film 1, PET carrier film 1 is coated with gloss oil layer 2, and gloss oil layer 2 is gone up vacuum sputtering or electroplating or chemical plating and is had metal reflector layer 3, is coated with adhesive layer A41 on the metal reflector layer 3, and compound has polyimide film (being PI membrane) 5 on adhesive layer A41, and the last adhesive layer B42 that coats of PI membrane 5, and compound has from type membrane 6 on the adhesive layer B42.
The utility model also provides a high reflection of light glued membrane, promptly the utility model discloses high reflection of light covers half-finished product of membrane, include: the PET carrier film 1, PET carrier film 1 is coated with gloss oil layer 2, and the gloss oil layer 2 is gone up vacuum sputtering or electroplating or chemical plating and is had metal reflector layer 3, is coated with adhesive layer A41 on the metal reflector layer 3, and the compounding has release liner 6 on the adhesive layer A41.
Compared with the high-reflection covering film (finished product), the high-reflection adhesive film (namely the semi-finished product) mainly lacks the arrangement of a PI film. The high-light-reflection cover film (finished product) can be directly attached to the FPC when in use; the highly reflective adhesive film (i.e. the semi-finished product) is attached to the PI film layer of the yellow common cover film on the FPC when in use.
The thickness of the PET carrier film 1 is 12-100 mu m, and the glossiness of the PET carrier film is more than 92%.
The gloss oil layer 2 is acrylic resin type, transparent, yellowing-resistant and high in refractive index, the refractive index is larger than 1.4, and the thickness is 1-50 mu m.
The metal used in the metal reflecting layer 3 is aluminum (Al), silver (Ag) and chromium (Cr), the Al, Ag and Cr are not easy to oxidize, the white light reflecting rate is high, white metal such as metal tin, zinc and the like can be used, and the thickness of the metal reflecting layer is 0.001-5 mu m.
The polyimide film 5 can be a commercially available common electronic grade polyimide film, the thickness of the polyimide film is 5-50 mu m, and commercially available products such as Brillouin chemical APICA L and DuPont Kapton can be selected.
The adhesive A41 between the metal reflective layer 3 and the PI film 5 and the adhesive B42 between the PI film 5 and the release film 6 are the same or different adhesives, and are one or two of polyurethane, epoxy resin and acrylic acid adhesive. Preferably, the adhesive A41 is a polyurethane adhesive with the thickness of 1-20 μm, and the adhesive B42 is an epoxy resin adhesive with the thickness of 10-30 μm.
The release film is made of PET release film or release paper, the thickness of the release film is 25-150 mu m, and the release force is 3-1200 g/mm.
The utility model discloses high reflection of light covers the manufacturing method of membrane, including following step:
step one, preparing an acrylic gloss oil solution; the obtained acrylic gloss oil solution is transparent, free from yellowing and high in refractive index, and preferably the refractive index is greater than 1.4.
Taking one or two of methyl methacrylate and methyl acrylate, one or two of methacrylic acid and acrylic acid, styrene, glycidyl methacrylate, isobornyl acrylate and cyclohexyl acrylate, dihydroxypropyl methacrylate, and carrying out solution polymerization under the protection of nitrogen, wherein the polymerization temperature is 85-95 ℃, azodiisobutyronitrile is used as an initiator, a mixed solution of ethyl acetate and xylene is used as a solvent, so as to obtain an acrylic gloss oil solution, the solid content of the acrylic gloss oil solution is 30-40%, and the molecular weight of the acrylic gloss oil is 5000-15000.
Wherein the weight part of the methyl methacrylate and/or the methyl acrylate is 10-15 parts;
2-10 parts of methacrylic acid and/or acrylic acid;
20-40 parts of styrene;
5-15 parts of glycidyl methacrylate;
20-50 parts of isobornyl acrylate and/or cyclohexyl acrylate;
3-5 parts of dihydroxypropyl methacrylate;
mixing ethyl acetate and xylene according to a weight ratio of 1:1, wherein the weight parts of the ethyl acetate and the xylene are 150-250 parts;
1-2 parts of azodiisobutyronitrile.
Coating a gloss oil layer on the PET carrier film;
and (3) coating the acrylic gloss oil solution prepared in the step one on a gloss PET carrier film, drying and rolling the gloss oil solution in an oven at 40-120 ℃ at the speed of 15-25 m/min to obtain the composite film of the PET carrier film and the gloss oil layer.
Step three, plating a metal reflecting layer on the composite film;
and (3) plating 0.001-5.0 mu m of aluminum, silver or chromium on the gloss oil layer of the composite film prepared in the step (II) by adopting a vacuum coating method to form a metal reflective layer 3. And obtaining the composite film of the PET carrier film, the gloss oil layer and the metal reflecting layer.
Step four, compounding a polyimide film;
coating an adhesive A41 on the metal reflective layer 3 of the composite film prepared in the step three, and synchronously compounding a polyimide film 5 at the pressure of 2-7 kg/500mm, the speed of 10-25 m/min and the temperature of 30-120 ℃.
Step five, compounding a release film;
coating an adhesive B42 on the polyimide film 5 of the composite film prepared in the step four, and synchronously compounding a release film 6 at the pressure of 2-7 kg/500mm, the speed of 10-25 m/min and the temperature of 30-120 ℃.
The following embodiments of the present invention will be described in detail, and the steps of each embodiment are substantially the same, except that the formula of the acrylic gloss oil solution prepared in the step one and the metal of the composite film plated metal reflective layer in the step three are shown in table 1 in detail;
TABLE 1
Example 1:
step one, preparing an acrylic gloss oil solution;
after 12 parts of methyl methacrylate, 6 parts of acrylic acid, 30 parts of styrene, 40 parts of isobornyl acrylate, 10 parts of glycidyl methacrylate and 4 parts of dihydroxypropyl methacrylate are mixed, the mixture is uniformly dripped into a mixed solution of 200 parts of a mixed solution of ethyl acetate and xylene and 1.5 parts of azobisisobutyronitrile according to a weight ratio of 1:1 at a temperature of 90 ℃ for 8 hours, and the mixture reacts for 4 hours to obtain the acrylic gloss oil solution.
Coating a gloss oil layer on the PET carrier film;
and (3) coating the acrylic gloss oil solution prepared in the step one on a gloss PET carrier film, drying and rolling the gloss oil solution in an oven at 40-120 ℃ at the speed of 15-25 m/min to obtain the composite film of the PET carrier film and the gloss oil layer.
Step three, plating a metal reflecting layer on the composite film;
and (3) plating 0.2 mu m of aluminum on the gloss oil layer of the composite film prepared in the step two by adopting a vacuum coating method to form a metal reflecting layer 3. And obtaining the composite film of the PET carrier film, the gloss oil layer and the metal reflecting layer.
Step four, compounding a polyimide film;
coating an adhesive A41 on the metal reflective layer 3 of the composite film prepared in the step three, and synchronously compounding a polyimide film 5 at the pressure of 2-7 kg/500mm, the speed of 10-25 m/min and the temperature of 30-120 ℃.
Step five, compounding a release film;
coating an adhesive B42 on the polyimide film 5 of the composite film prepared in the step four, and synchronously compounding a release film 6 at the pressure of 2-7 kg/500mm, the speed of 10-25 m/min and the temperature of 30-120 ℃.
Example 2
Step one, preparing an acrylic gloss oil solution;
mixing 10 parts of methyl acrylate, 2 parts of methacrylic acid, 20 parts of styrene, 20 parts of cyclohexyl acrylate, 5 parts of glycidyl methacrylate and 3 parts of dihydroxy propyl methacrylate, uniformly dropwise adding the mixture into a mixed solution of 150 parts of a mixed solution of ethyl acetate and xylene and 1 part of azodiisobutyronitrile according to a weight ratio of 1:1 at the temperature of 95 ℃ for 8 hours, and reacting for 4 hours to obtain the acrylic gloss oil solution.
Coating a gloss oil layer on the PET carrier film;
and (3) coating the acrylic gloss oil solution prepared in the step one on a gloss PET carrier film, drying and rolling the gloss oil solution in an oven at 40-120 ℃ at the speed of 15-25 m/min to obtain the composite film of the PET carrier film and the gloss oil layer.
Step three, plating a metal reflecting layer on the composite film;
and (3) plating silver with the thickness of 0.01 mu m on the gloss oil layer of the composite film prepared in the step two by adopting a vacuum coating method to form a metal reflective layer 3. And obtaining the composite film of the PET carrier film, the gloss oil layer and the metal reflecting layer.
Step four, compounding a polyimide film;
coating an adhesive A41 on the metal reflective layer 3 of the composite film prepared in the step three, and synchronously compounding a polyimide film 5 at the pressure of 2-7 kg/500mm, the speed of 10-25 m/min and the temperature of 30-120 ℃.
Step five, compounding a release film;
coating an adhesive B42 on the polyimide film 5 of the composite film prepared in the step four, and synchronously compounding a release film 6 at the pressure of 2-7 kg/500mm, the speed of 10-25 m/min and the temperature of 30-120 ℃.
Example 3
Step one, preparing an acrylic gloss oil solution;
taking 15 parts of methyl methacrylate, 10 parts of methacrylic acid, 40 parts of styrene, 50 parts of cyclohexyl acrylate, 15 parts of glycidyl methacrylate and 5 parts of dihydroxypropyl methacrylate, mixing, uniformly and dropwise adding the mixture into a mixture of 250 parts of a mixed solution of ethyl acetate and xylene and 2 parts of azobisisobutyronitrile according to a weight ratio of 1:1 at a temperature of 88 ℃ for 8 hours, and reacting for 4 hours to obtain the acrylic gloss oil solution.
Coating a gloss oil layer on the PET carrier film;
and (3) coating the acrylic gloss oil solution prepared in the step one on a gloss PET carrier film, drying and rolling the gloss oil solution in an oven at 40-120 ℃ at the speed of 15-25 m/min to obtain the composite film of the PET carrier film and the gloss oil layer.
Step three, plating a metal reflecting layer on the composite film;
and (3) plating chromium with the thickness of 0.1 mu m on the gloss oil layer of the composite film prepared in the step two by adopting a vacuum coating method to form a metal reflecting layer 3. And obtaining the composite film of the PET carrier film, the gloss oil layer and the metal reflecting layer.
Step four, compounding a polyimide film;
coating an adhesive A41 on the metal reflective layer 3 of the composite film prepared in the step three, and synchronously compounding a polyimide film 5 at the pressure of 2-7 kg/500mm, the speed of 10-25 m/min and the temperature of 30-120 ℃.
Step five, compounding a release film;
coating an adhesive B42 on the polyimide film 5 of the composite film prepared in the step four, and synchronously compounding a release film 6 at the pressure of 2-7 kg/500mm, the speed of 10-25 m/min and the temperature of 30-120 ℃.
Comparative example 1
A commercially available white gloss oil product, solar white ink, was used as comparative example 1.
The test data of examples 1 to 3 and comparative example 1 of the present invention are shown in table 2.
TABLE 2
| Examples | Reflection rate | Resistance to yellowing in reflow soldering | Thermal shock |
| Example 1 | 93 | Does not turn yellow | Does not bubble |
| Example 2 | 92 | Does not turn yellow | Does not bubble |
| Example 3 | 93 | Does not turn yellow | Does not bubble |
| Comparative example 1 | 75 | Does not turn yellow | Does not bubble |
| Detection standard | Reflection rate tester | Eye inspection | Observation with naked eyes |
Claims (10)
1. The high-light-reflection covering film is characterized in that: including PET carrier film (1), it has gloss oil layer (2) to coat on PET carrier film (1), be equipped with metal reflector layer (3) on gloss oil layer (2), it has PI membrane (5) to compound through gluing agent A (41) on metal reflector layer (3), it has from type membrane (6) to compound through gluing agent B (42) on PI membrane (5).
2. The highly reflective cover film according to claim 1, wherein: the metal used for the metal reflecting layer (3) is aluminum or silver or chromium.
3. The highly reflective cover film according to claim 1 or 2, wherein: the thickness of the gloss oil layer (2) is 1-50 mu m.
4. The highly reflective cover film according to claim 1, wherein: the thickness of the metal reflecting layer (3) is 0.001-5 mu m.
5. The highly reflective cover film according to claim 1, wherein: the thickness of the PI film (5) is 5-50 mu m.
6. The highly reflective cover film according to claim 1, wherein: the thickness of the adhesive A (41) is 1-20 mu m; the thickness of the adhesive B (42) is 10-30 mu m.
7. The high-light-reflection adhesive film is characterized by comprising a PET carrier film (1), wherein a gloss oil layer (2) is coated on the PET carrier film (1), a metal light-reflection layer (3) is arranged on the gloss oil layer (2), and a release film (6) is compounded on the metal light-reflection layer (3) through a coating adhesive A (41).
8. The highly reflective adhesive film according to claim 7, wherein: the metal used by the metal reflecting layer (3) is aluminum or silver or chromium; the thickness of the metal reflecting layer (3) is 0.001-5 mu m.
9. The highly reflective adhesive film according to claim 7, wherein: the thickness of the gloss oil layer (2) is 1-50 mu m.
10. The highly reflective adhesive film according to claim 7, wherein: the thickness of the adhesive A (41) is 1-20 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921751342.1U CN211079014U (en) | 2019-10-16 | 2019-10-16 | High-reflection cover film and high-reflection adhesive film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921751342.1U CN211079014U (en) | 2019-10-16 | 2019-10-16 | High-reflection cover film and high-reflection adhesive film |
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| Publication Number | Publication Date |
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| CN211079014U true CN211079014U (en) | 2020-07-24 |
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| CN201921751342.1U Active CN211079014U (en) | 2019-10-16 | 2019-10-16 | High-reflection cover film and high-reflection adhesive film |
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