CN101738661B - Retro-reflecting reflective film and manufacturing method thereof - Google Patents
Retro-reflecting reflective film and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to a retro-reflecting reflective film and a manufacturing method thereof. Through a transmission resin layer formed at the triangle vertex of a micro prism in a micro prism layer, line contact between the vertex angle edge of the micro prism in the micro prism layer and the transmission resin layer is achieved so as to well protect the micro prism and solve the problem of insufficient return light. The retro-reflecting reflective film of the invention also has the advantages of high return light rate, long service life, and the like.
Description
Technical field
The present invention relates to a kind of retro-reflecting reflective film and manufacture method thereof.
Background technology
Retro-reflecting reflective film is towards luminophor reflection ray, and night is perception reflex light body well, is widely applied to the aspects such as securing band, traffic mark board, clothing goods, materials and equipments.
In No. 823959th, Korean Patent Registration license, recorded a kind of structure of retro-reflecting reflective film, in printed layers, form many leg-of-mutton micro-lens.When light is incident on micro-lens, can implement towards light source retroreflecting.In order to protect this micro-lens, must be at the surface apparatus layer protecting film of micro-lens.As adopt high frequency or ultrasound wave bonding, or adopt the method for cold-adhesion, diaphragm is attached on micro-lens, diaphragm just may be invaded in the space on mountain of micro-lens, the impossible light echo in this place.So can only use roller press, produce continuously regular hexagon decorative pattern, make its a part of heat bonding, and can only be bonding at unglazed position.Like this, just may in the process of using, due to the reduction of bounding force, mutually depart from, can lose equally the reflective function of retroreflecting.The structure of another kind of retro-reflecting reflective film in order to improve the brightness of regression reflecting, forms porose bonding coat on diaphragm in addition, and its pitch-row is applicable to the interval of the intersection point of micro-lens.But, in work progress, can not like clockwork the intersection point of this hole and micro-lens be worked good, do not reach the object of expection.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of retro-reflecting reflective film and manufacture method thereof, the retro-reflecting reflective film of described manufacture has the advantages such as light echo rate is high, the life-span is long.
Technical scheme of the present invention is: a kind of retro-reflecting reflective film; comprise bonding successively printed layers, micro-lens layer, light-transmissive resin layer, reflective hidden layer, adhesive coating and the diaphragm kept away; described micro-lens layer is that a plurality of micro-lens that are del structure form by cross section; described micro-lens layer adheres in printed layers equably; described light-transmissive resin layer is formed at the triangular apex place of micro-lens layer, and forms the support frame structure being comprised of brokenly no reflection events type point.
Above-mentioned micro-lens layer, light-transmissive resin layer, reflective hidden to keep away layer, adhesive coating and diaphragm be all film configuration layer.
As a further improvement on the present invention: the high scope in mountain of described micro-lens is 10～40 μ M; The material of this micro-lens is PET, PVE, PMNA, PT, PC, PA, PE, TPU transparent resin; The formation instrument of this micro-lens is embossment roller press.
The thickness range of described light-transmissive resin layer is 0.1～10 μ M, and preferable range is 0.5～5 μ M.The material of this light-transmissive resin layer is acrylic (ACRYLIC) resin, urethane (URETHANE) resin, acryl resin, melamine resin, polyamide.
The transmission solution of this light-transmissive resin layer, adhering liquid is the composition of resin, solvent and rigidizer, wherein: by weight, resin 15～40%, solvent 45～70%, rigidizer 1～15%; Resin can be selected acrylate, melamine resin, polyamide; Solvent can be selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, ethanol; Rigidizer can be selected aliphatic polymeric isocyanate, hexa-methylene polyisocyanates.
The formation instrument of described light-transmissive resin layer is low-temperature roller press.This low-temperature roller press temperature controlling range is 30～90 ℃.The available kind of low-temperature roller press has silication roller press, roller press Celsius, urethane roller press, card-cut silication roller press, card-cut urethane roller press, card-cut roller press Celsius.
The described reflective hidden thickness range of keeping away layer is 0.1～5 μ M.This reflective hidden material of keeping away layer is the composition of resin, solvent and solid, wherein: by weight, resin 15～40%, solvent 45～70%, solid 1～15%; Resin can be selected acrylic resin, urethane resin, acryl resin, melamine resin, polyamide; Solvent can be selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, ethanol; Solid can be selected the compound of titania, alundum (Al2O3), caesium, wooden nitre, clay, pigment, carbon black, zirconium dioxide, silicon dioxide.This reflective hidden coating method of keeping away layer is mode or the roller press of photogravure.
The thickness range of described adhesive coating is 2～10 μ M.The material of this adhesive coating is the composition of resin, solvent, wherein: by weight, resin 15～85%, solvent 15～85%; Resin can be selected acrylic resin, urethane resin, silication resin, polyamide; Described solvent, can select methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, ethanol.
The form of described diaphragm has resin molding, paper and coated paper, preferred resin film; This resin molding selected materials has PET, PVC, PP, PMMA, PC, PA, PE or TPC.This thick resin film scope is 12～500 μ M.
For improving the retroreflecting reflective function of integral membrane or the high number in mountain of cooperation micro-lens, at light-transmissive resin layer and reflective hidden keeping away between layer, set up light diffusion layer, the thickness range of described light diffusion layer is 0.1～6 μ M, preferable range is 0.1～0.55 μ M; The material of this light diffusion layer is the composition of resin, solvent and crystal, wherein: by weight, resin 15～40%, solvent 45～70%, crystal 1～15%; Resin can be selected acrylic resin, urethane resin, acryl resin, melamine resin, polyamide; Solvent can be selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, ethanol; Crystal, can select glass microballoon, PMMA, alundum (Al2O3), silicon dioxide.The coating method of this light diffusion layer is the mode of photogravure.
A method of manufacturing retro-reflecting reflective film, comprises the steps:
(1). in printed layers, utilizing embossment roller press to manufacture mountain high is the micro-lens of 10～40 μ M, and has formed continuously the micro-lens layer of retroreflecting;
(2). by low-temperature roller press transmission adhering liquid on the face of micro-lens layer, and to have formed thickness with the lines that are connected intersection point on the mountain of micro-lens be the light-transmissive resin layer of 0.1～10 μ M;
(3). then by the first printing basket, adopting the mode coating thickness of photogravure is the light diffusion layer of 0.1～6 μ M;
(4). by the second printing basket print thickness on the basis of light diffusion layer, be the reflective hidden layer of keeping away of 0.1～5 μ M;
(5). reflective hidden keep away layer mirror film on form the adhesive coating that thickness is 2～10 μ M; Adhere to again the protective film that thickness is 12～500 μ M.
For fear of micro-lens drift angle limit temperature distortion in micro-lens layer, affect reflecting effect, the heating and temperature control of the low-temperature roller press in described step (2) is at 30～90 ℃.
Retro-reflecting reflective film provided by the invention, on the leg-of-mutton intersection point of micro-lens layer, by transmission transmission solution, on light-transmissive resin layer surface, form the rete with certain degree of hardness, owing to containing rigidizer in transmission solution, thereby the drift angle limit of realizing the micro-lens in micro-lens layer contacts with the line of light-transmissive resin layer, and forms thus the bracing frame that no reflection events type point forms brokenly.Therefore, it has not only protected micro-lens well, and can on reflection horizon, again reflect and can extend and fully maintain reflectivity along with the intersection point of micro-lens, has solved the problem of light echo deficiency.
Retro-reflecting reflective film of the present invention has advantages of that light echo rate is high, the life-span is long, and the light intensity of this luminescent film can reach 200 Luxs, and considerably beyond the level of the reflective membrane such as advertisement level, engineering grade in prior art, its wide-angle can reach 168 degree.
Accompanying drawing explanation
Fig. 1, retro-reflecting reflective film structure diagram of the present invention;
The production combination structural representation of Fig. 2, retro-reflecting reflective film of the present invention.
In figure: printed layers 1-1; Micro-lens layer 1-2; Light-transmissive resin layer 1-3; Light diffusion layer 1-4; The reflective hidden layer 1-5 that keep away; Adhesive coating 1-6; Diaphragm 1-7; Emptying roller 2-1; The first printing basket 2-2; The second printing basket 2-3; The 3rd printing basket 2-4; The 4th printing basket 2-5; Embossment roller press 2-6; Low temperature roller press 2-7; Diaphragm roller 2-8; Apparatus for coating 2-9; Guide roller 2-10; Dryer 2-11; Rolling-up mechanism 2-12; Exsiccator 2-13.
Embodiment
To closing drawings and Examples, the present invention is further illustrated below.
Embodiment 1: as Fig. 1, a kind of retro-reflecting reflective film, comprise bonding successively printed layers, micro-lens layer, light-transmissive resin layer, light diffusion layer, reflective hidden layer, adhesive coating and the diaphragm kept away, described micro-lens layer is that a plurality of micro-lens that are del structure form by cross section, described micro-lens layer adheres in printed layers equably, and described light-transmissive resin layer is formed at the triangular apex place of micro-lens layer; Wherein, the transmission solution of described light-transmissive resin layer is by by weight, 40% melamine resin, and 50% methyl ethyl ketone, 10% hexa-methylene polyisocyanates forms; The material of described light diffusion layer is served as reasons by weight, 35% urethane resin, and 64% ethanol, 1%PMMA forms; The described reflective hidden material of keeping away layer is by by weight, 38% urethane resin; 52% methyl isobutyl ketone; 10% silicon dioxide forms; The material of described adhesive coating is by by weight, 45% urethane resin, 55% ethyl acetate.
A kind of method of manufacturing retro-reflecting reflective film of the present invention: utilizing embossment roller press 2-6 to manufacture mountain high on transparent PVC film is the micro-lens of 40 μ M, and has formed continuously the micro-lens layer of retroreflecting; Then, to have formed thickness with the lines that are connected intersection point on the mountain of micro-lens be the light-transmissive resin layer of 2 μ M to the low temperature roller press 2-7 transmission melamine resin adhering liquid on micro-lens face by 50 ℃.Then by the first printing basket, being utilized photogravure and printed thickness containing the urethane resin of 1%PMMA microballon is the light diffusion layer of 5 μ M.By the second printing basket utilization, containing the urethane resin of 10% silicon dioxide, having printed thickness is again the reflective hidden layer of keeping away of 4 μ M.Reflective hidden keep away layer mirror film on utilize urethane resin adhering liquid to form adhesive coating.Adhering to thickness is the PET diaphragm of 100 μ M again, thereby has made a kind of retro-reflecting reflective film of the present invention.
Embodiment 2, as Fig. 1, a kind of retro-reflecting reflective film, comprise bonding successively printed layers, micro-lens layer, light-transmissive resin layer, light diffusion layer, reflective hidden layer, adhesive coating and the diaphragm kept away, described micro-lens layer is that a plurality of micro-lens that are del structure form by cross section, described micro-lens layer adheres in printed layers equably, and described light-transmissive resin layer is formed at the triangular apex place of micro-lens layer; Wherein, the transmission solution of described light-transmissive resin layer is by by weight, 30% acryl resin, and 60% ethyl acetate, 10% aliphatic polymeric isocyanate forms; The material of described light diffusion layer is served as reasons by weight, 30% melamine resin, and 64% ethanol, 6% alundum (Al2O3) forms; The described reflective hidden material of keeping away layer is by by weight, 32% urethane resin; 65% methyl ethyl ketone; 3% wooden nitre forms; The material of described adhesive coating is by by weight, 55% urethane resin, 45% ethyl acetate.
The another kind of method of manufacturing retro-reflecting reflective film: utilizing embossment roller press 2-6 to manufacture mountain high on transparent PET film is the micro-lens of 20 μ M, and has formed continuously the micro-lens layer of retroreflecting.Then, to have formed thickness with the lines that are connected intersection point on the mountain of micro-lens be the light-transmissive resin layer of 6 μ M to the low temperature roller press 2-7 transmission acryl resin adhering liquid on micro-lens face by 40 ℃.Then by the first printing basket, being utilized photogravure and printed thickness containing the melamine resin of 6% alundum (Al2O3) is the light diffusion layer of 2 μ M; By the second printing basket utilization, containing the urethane resin of 3% wooden nitre, having printed thickness is again the reflective hidden layer of keeping away of 1 μ M.Reflective hidden keep away layer mirror film on utilize urethane resin adhering liquid to form adhesive coating.Adhering to thickness is the PET diaphragm of 120 μ M again.Made another kind of retro-reflecting reflective film of the present invention.
Embodiment 3
On the retro-reflecting reflective film of embodiment 1 or embodiment 2, print ad content, made the retro-reflecting reflective film that another kind of the present invention has advertising function.
As shown in Figure 2, for the manufacture method of retro-reflecting reflective film, the manufacturing equipment of retro-reflecting reflective film comprises emptying roller 2-1, the 1st printing basket 2-2, the 2nd printing basket 2-3, the 3rd printing basket 2-4, the 4th printing basket 2-5, embossment roller press 2-6, low temperature roller press 2-7, diaphragm roller 2-8, apparatus for coating 2-9, guide roller 2-10, dryer 2-11, rolling-up mechanism 2-12, exsiccator 2-13; According to the assembling of manufacturing process order, printed layers detours therebetween, after being coated with each synthem and drying, by rolling-up mechanism, is wound into finished product.
Claims (18)
1. a retro-reflecting reflective film; it is characterized in that: comprise bonding successively printed layers, micro-lens layer, light-transmissive resin layer, light diffusion layer, reflective hidden layer, adhesive coating and the diaphragm kept away; described micro-lens layer is that a plurality of micro-lens that are del structure form by cross section; described micro-lens layer adheres in printed layers equably; described light-transmissive resin layer is formed at the triangular apex place of micro-lens layer, and forms the support frame structure being comprised of brokenly no reflection events type point.
2. retro-reflecting reflective film according to claim 1, is characterized in that: the drift angle limit of the micro-lens in described micro-lens layer contacts with light-transmissive resin layer line.
3. retro-reflecting reflective film according to claim 1 and 2, is characterized in that: the high scope in mountain of described micro-lens is 10～40 μ M.
4. retro-reflecting reflective film according to claim 1, is characterized in that: the thickness range of described light-transmissive resin layer is 0.1～10 μ M.
5. retro-reflecting reflective film according to claim 4, is characterized in that: the thickness range of described light-transmissive resin layer is 0.5～5 μ M.
6. retro-reflecting reflective film according to claim 1 or 5, is characterized in that: the transmission solution of described light-transmissive resin layer, and slurry is the composition of resin, solvent and rigidizer, wherein: by weight, resin accounts for 15～40%, and solvent accounts for 45～70%, and rigidizer accounts for 1～15%; Described resin is selected acryl resin, melamine resin or polyamide; Described solvent is selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate or ethanol; Described rigidizer is selected aliphatic polymeric isocyanate, hexa-methylene polyisocyanates.
7. retro-reflecting reflective film according to claim 1, is characterized in that: the thickness range of described light diffusion layer is 0.1～6 μ M.
8. retro-reflecting reflective film according to claim 7, is characterized in that: the material of described light diffusion layer is the composition by resin, solvent and crystal, and wherein: by weight, resin accounts for 15～40%, solvent accounts for 45～70%, and crystal accounts for 1～15%; Described resin is selected acrylic resin, urethane resin, acrylate, melamine resin or polyamide; Described solvent is selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate or ethanol; Described crystal is selected glass microballoon, PMMA, alundum (Al2O3) or silicon dioxide.
9. retro-reflecting reflective film according to claim 1, is characterized in that: the described reflective hidden thickness range of keeping away layer is 0.1～5 μ M.
10. according to the retro-reflecting reflective film described in claim 1 or 9, it is characterized in that: the described reflective hidden material of layer of keeping away is by the composition of resin, solvent and solid, wherein: by weight, described resin accounts for 15～40%; Solvent accounts for 45～70%; Solid accounts for 1～15%; Described resin is selected acrylic resin, urethane resin, acryl resin, melamine resin or polyamide; Described solvent is selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate or ethanol; Described solid is selected the compound of titania, alundum (Al2O3), caesium, wooden nitre, clay, pigment, zirconium dioxide or silicon dioxide.
11. retro-reflecting reflective films according to claim 1, is characterized in that: the thickness range of described adhesive coating is 2～10 μ M.
12. according to the retro-reflecting reflective film described in claim 1 or 11, it is characterized in that: the material of described adhesive coating is the composition of resin, solvent, wherein: by weight, described resin accounts for 15～85%, and solvent accounts for 15～85%; Described resin is selected acrylic resin, urethane resin, silication resin or polyamide; Described solvent is selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate or ethanol.
13. retro-reflecting reflective films according to claim 1, is characterized in that: described diaphragm is resin, and film thickness scope is 12～500 μ M.
14. 1 kinds of methods of manufacturing retro-reflecting reflective film as claimed in claim 1, is characterized in that comprising the steps:
(1). in printed layers, utilizing embossment roller press to manufacture mountain high is the micro-lens of 10～40 μ M, and has formed continuously the micro-lens layer of retroreflecting;
(2). by low-temperature roller press transmission adhering liquid on the face of micro-lens layer, and to have formed thickness with the lines that are connected intersection point on the mountain of micro-lens be the light-transmissive resin layer of 0.1～10 μ M, wherein the heating and temperature control of low-temperature roller press is at 30～90 ℃;
(3). then by the first printing basket, adopting the mode coating thickness of photogravure is the light diffusion layer of 0.1～6 μ M;
(4). by the second printing basket print thickness on the basis of light diffusion layer, be the reflective hidden layer of keeping away of 0.1～5 μ M;
(5). reflective hidden keep away layer mirror film on form the adhesive coating that thickness is 2～10 μ M; Adhere to again the protective film that thickness is 12～500 μ M.
The method of 15. manufacture according to claim 14 retro-reflecting reflective film as claimed in claim 1, it is characterized in that: the material of described light diffusion layer is the composition by resin, solvent and crystal, wherein: by weight, resin accounts for 15～40%, solvent accounts for 45～70%, and crystal accounts for 1～15%; Described resin is selected acrylic resin, urethane resin, acrylate, melamine resin or polyamide; Described solvent is selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate or ethanol; Described crystal is selected glass microballoon, PMMA, alundum (Al2O3) or silicon dioxide.
The method of 16. manufacture according to claim 14 retro-reflecting reflective film as claimed in claim 1, is characterized in that: the described reflective hidden material of layer of keeping away is by the composition of resin, solvent and solid, wherein: by weight, described resin accounts for 15～40%; Solvent accounts for 45～70%; Solid accounts for 1～15%; Described resin is selected acrylic resin, urethane resin, acryl resin, melamine resin or polyamide; Described solvent is selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate or ethanol; Described solid is selected the compound of titania, alundum (Al2O3), caesium, wooden nitre, clay, pigment, zirconium dioxide or silicon dioxide.
The method of 17. manufacture according to claim 14 retro-reflecting reflective film as claimed in claim 1, it is characterized in that: the transmission solution of described light-transmissive resin layer, be that slurry is the composition of resin, solvent and rigidizer, wherein: by weight, resin accounts for 15～40%, solvent accounts for 45～70%, and rigidizer accounts for 1～15%; Described resin is selected acryl resin, melamine resin or polyamide; Described solvent is selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate or ethanol; Described rigidizer is selected aliphatic polymeric isocyanate, hexa-methylene polyisocyanates.
The method of 18. manufacture according to claim 14 retro-reflecting reflective film as claimed in claim 1, it is characterized in that: the material of described adhesive coating is the composition of resin, solvent, wherein: by weight, described resin accounts for 15～85%, and solvent accounts for 15～85%; Described resin is selected acrylic resin, urethane resin, silication resin or polyamide; Described solvent is selected methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate or ethanol.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102230984B (en) * | 2011-07-01 | 2013-08-28 | 广州市白云信达反光材料有限公司 | Microprism reflecting film and manufacturing method thereof |
| CN104162764A (en) * | 2014-07-30 | 2014-11-26 | 中国科学院重庆绿色智能技术研究院 | Method and device for improving laser energy utilization efficiency of metal strip |
| CN105549136B (en) * | 2016-03-15 | 2018-06-22 | 成都中节能反光材料有限公司 | A kind of weatherability prism type light reflection film |
| CN106847131B (en) * | 2017-01-04 | 2020-10-02 | 湖南鼎一致远科技发展有限公司 | Novel reflective mark and manufacturing process |
| TWM563344U (en) * | 2018-04-03 | 2018-07-11 | 邵偉國 | Power saving and energy saving patch |
| CN117656557B (en) * | 2024-01-31 | 2024-04-05 | 广州市鼎安交通科技股份有限公司 | Production equipment of reflective film with microprism array structure |
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