CN103033865B - A kind of manufacture method of glass microballoon sedimentation type reflective membrane - Google Patents
A kind of manufacture method of glass microballoon sedimentation type reflective membrane Download PDFInfo
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- CN103033865B CN103033865B CN201210518847.XA CN201210518847A CN103033865B CN 103033865 B CN103033865 B CN 103033865B CN 201210518847 A CN201210518847 A CN 201210518847A CN 103033865 B CN103033865 B CN 103033865B
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Abstract
The present invention relates to a kind of preparation method of glass microballoon sedimentation type reflective membrane, carry out as follows: make reflective surface rete; Make reflector layer: glass microballoon and acroleic acid polymerization modification focus layer resin are mixed by a certain percentage also high-speed stirred even, above-mentioned mixed resin material is coated on reflective surface rete, its thickness is greater than the diameter of glass microballoon, after in the drying tunnel of 50 DEG C-130 DEG C, carry out baking dry; The vacuum evaporation in laggard row metal reflection horizon, then be coated with the releasing ply of paper compound of pressure sensitive adhesive adhesion coating.Present invention process is simple, practical, reduces production cost, improves production efficiency and yield rate.
Description
Technical field
The present invention relates to a kind of microbead type optical material, is specifically a kind of by the reflective membrane by glass microballoon and a resin mixed material coated and molded.
Background technology
Microbead type reflective membrane is mainly divided into two large classes by structure, and one is lens baried types, and one is fluid sealant bladder type; The several types such as advertisement level, engineering grade, car plate level, high intensity level are mainly divided into by purposes.Advertisement reflecting film is mainly used in the making of billboard and Related product, engineering grade reflective membrane is mainly used in standard highway and urban highway traffic mark makes, car plate reflecting film is mainly used in motor vehicles number plate and makes, and the reflective membrane of high intensity level is mainly used in permanent traffic sign and the making of operation area facility of highway.
Current known each rank glass microballoon type reflective membrane all can have similar plants pearl production technology one, and Patents also has issue, as: production of glass micropearl reflecting-film and single-layer coplanar tree (CN1854773) etc.Current lens baried type reflecting film product more has identical production technology: plant pearl, clear pearl, pre-coating focus layer, coating focus layer resin etc.Above production technology starting material production cost is high, and energy consumption is higher, and cost of labor is high, and production efficiency is lower, and yield rate is also relatively low.The reflective membrane adopting microballon sedimentation process to produce will save production cost, significantly enhance productivity, and improve yield rate, be convenient to realize large-scale industrial production.
Summary of the invention
In order to overcome existing conventional lenses baried type product complex process aborning, production cost is high, production efficiency is lower, yield rate is lower waits not enough and shortcoming, the invention provides a kind of manufacture method of glass microballoon sedimentation type reflective membrane, this technique is simple, practical, reduces production cost, improves production efficiency and yield rate.
For achieving the above object, technical scheme of the present invention is:
A preparation method for glass microballoon sedimentation type reflective membrane, comprises reflective surface rete, comprises the reflector layer of glass microballoon and focus layer resin, metallic reflector, pressure sensitive adhesive adhesion coating and releasing ply of paper, it is characterized in that, carry out as follows:
A, making reflective surface rete;
B, making reflector layer:
A. glass microballoon and acroleic acid polymerization modification focus layer resin are mixed by a certain percentage also high-speed stirred even, stirring rate controls as 3000-3500 revolutions per second, and mixing time controls to be 10-30 minute; The solid content of described acroleic acid polymerization modification focus layer resin controls at 26-32%, and viscosity controls at 150-250cP, and in above-mentioned hybrid resin, add the silicone oil froth breaking levelling agent of 0.5% (percentage by weight);
B, coat on reflective surface rete by above-mentioned hybrid resin material, its thickness is greater than the diameter of glass microballoon, after in the drying tunnel of 50 DEG C-130 DEG C, carry out baking dry, wherein the settling temperature in front road controls at 50-70 DEG C, and the residence time is greater than 40s;
The vacuum evaporation in C, laggard row metal reflection horizon, then be coated with the releasing ply of paper compound of pressure sensitive adhesive adhesion coating.
As the preferred embodiments of the present invention: described glass microballoon is through the chemically treated high refractive index glass micro pearl of sedimentation.
As the preferred embodiments of the present invention: refer to that described glass microballoon first carries out pickling to the sedimentation chemical treatment of glass microballoon in the present invention, the silane coupling agent of 5% is added again after drying, the sodium dodecylsulphonate of 1%, be uniformly mixed, and completely dry, glass microballoon after treatment, is all greatly improved in parent's property, surface smoothness and wetting state etc., which enhance the settling property of glass microballoon in resin, decrease the settling time.
In order to improve Total Product quality, particularly transmittance, the transmittance of described reflective surface rete is greater than 90%, and THICKNESS CONTROL is at 50-55 μm.And as preferred embodiment, described reflective surface rete adopts BOPET material, its transparency is good, outdoor weathe resistance is good, and has good adhesion property with reflector layer.
As a further improvement on the present invention: the ratio of described glass microballoon and acroleic acid polymerization modification focus layer resin is 1:3-6, calculates by mass percentage.
The principle of work that the present invention adopts is: glass microballoon high-speed stirred be dispersed in the focus layer resin of acroleic acid polymerization modification; Resin is coated with rear also baking and curing with mixing of microballon, makes glass microballoon be deposited to bottom surface material in dry run, resin dry contraction on microballon sphere forms certain thickness focus layer; In focus layer plating metal on surface reflection horizon, composite pressure-sensitive glue-line.
The present invention's main technical solution problem is: the glass microballoon of sedimentation in resin even, non-overlappingly must be deposited to bottom, and the reflective surface that guarantee microballon sphere is formed is consistent and the thickness of focus layer is identical.
First the present invention passes through high-speed stirred, glass microballoon is evenly distributed in resin before coating, then a spreading formation process is adopted to be coated with, the microballon of mixing after coating and resin are at drying tunnel inner drying, hybrid resin viscosity under drying tunnel temperature condition declines rapidly, and microballon rapid subsidence is to facing surface; In this settling process, ensure that glass microballoon sedimentation forms a pearl face and zero lap phenomenon by the viscosity of the content of control microballon, drying tunnel temperature, acryl resin and evaporation rate etc., and form the spherical reflective surface of identical focus layer thickness in bead surface.
Advantage of the present invention is that used Refractive Index of Glass Microspheres and particle diameter range of choice are extensive, and the refractive index (n) of microballon is from 1.90-2.25, and the particle size range of microballon can be selected from 500 order-250 orders (25 μm-61 μm); The wider selection of refractive index and particle diameter, by being conducive to the production cost reducing glass microballoon, improves glass microballoon utilization rate.
Production technology of the present invention changes during original reflective membrane produces completely: plant pearl, clear pearl, pre-coating focus layer, the cumbersome process such as coating focus layer resin, by microballon and focus layer resin by dispersion machine stir miscible after to be once coated with sedimentation shaping.New technology greatly reduces production cost, energy resource consumption and labor cost; Production efficiency improves 50%-100%, and finished product rate improves 5%-10%, improves the entire volume rate of product; And the concentric reflective surface of product is shaping more good, the wide-angle performance of reflective membrane is more excellent.In market competition perfervid today, sedimentation type reflective membrane production technology breaks through the revolutionary character of original technique, and product is commercially more competitive, and lens baried type reflective membrane future developing trend, has wide market outlook especially.
Another advantage of the present invention is that process is simple, raw material is sufficient and range of choices is wide, technical maturity, is beneficial to extensive popularization.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention.
Embodiment
By the following examples, in conjunction with diagrammatic cross-section, the present invention is described in further detail.
Embodiment 1:
As shown in Figure 1, the reflective membrane that the present invention relates to is composited by reflective surface rete 1, soot layer 2, focusing resin bed 3, metallic reflector 4, pressure sensitive adhesive adhesion coating 5 and releasing ply of paper 6.
Concrete production run of the present invention is: the glass microballoon of 300-350 order refractive index 1.90 is first carried out pickling with oxalic acid, the silane coupling agent of 5% of glass microballoon weight is added again after drying, add the sodium dodecylsulphonate of 1% of glass microballoon weight, be uniformly mixed, and it is completely dry, make microballon and resin have better intermiscibility, play and soak and reduce capillary effect.Described reflective surface rete 1 adopts BOPET(biaxial stretching polyester) material, the transparency of material is good, transmittance 90%, and thickness is at 50 μm.After being mixed with acroleic acid polymerization modification focus layer resin 3 eight parts by the glass microballoon 2 two parts of surface organic modification process, high-speed stirred is even, and stirring rate 3000-3500 revolutions per second, mixing time 20-30 minute, make glass microballoon be uniformly distributed in resin; And acroleic acid polymerization modification focus layer resin 3 refers to that focus layer resin is by acroleic acid polymerization modification, it has good outdoor weathe resistance; In order to ensure glass microballoon in dry settling process rapid subsidence to facing surface, and make glass microballoon sedimentation form a pearl face and zero lap phenomenon, in the present embodiment, the solid content of acroleic acid polymerization modification focus layer resin used controls at 28-30%, viscosity controls at 200-230cP, adds the silicone oil froth breaking levelling agent of 0.5% in resin; Then above-mentioned composite material is coated on reflective surface layer 1, the THICKNESS CONTROL 250 μm-270 μm of wet glue-line, then wet glue-line toasts 6-8 minute under the condition of 50 DEG C-130 DEG C, be specially: the settling temperature in front road is 55 DEG C, the residence time is 1.1 minutes, rear channel temp is dry baking temperature, is 125 DEG C in the present embodiment, dry completely also rolling; The last vacuum evaporation carrying out metallic aluminium reflection horizon 4 again, then be coated with releasing ply of paper 6 compound of pressure sensitive adhesive adhesion coating 5.
Embodiment 2:
Concrete production run of the present invention is: the glass microballoon of 450-500 order refractive index 1.93 is first carried out pickling with tartrate, and add the silane coupling agent of 5% after drying again, the sodium dodecylsulphonate of 1%, is uniformly mixed, and completely dry.Wherein reflective surface rete 1 adopts BOPET material, and thickness is at 52 μm.By even by high-speed stirred to the glass microballoon 2 three parts of surface organic modification process and acroleic acid polymerization modification focus layer resin 30 five parts, stirring rate 3000-3500 revolutions per second, mixing time 18 minutes; The solid content of described acroleic acid polymerization modification focus layer resin controls 27%, and viscosity controls at 170cP, adds the silicone oil froth breaking levelling agent of 0.5% in resin.Above-mentioned composite material glue is coated on reflective surface layer 1, the THICKNESS CONTROL 180 μm-200 μm of wet glue-line, wet glue-line toasts 6-8 minute under the condition of 50 DEG C-130 DEG C, be specially: the settling temperature in front road is 65 DEG C, the residence time will reach about 1 minute, then channel temp is 130 DEG C, dry completely also rolling.Carry out the vacuum evaporation in metallic aluminium reflection horizon 4 again, then be coated with releasing ply of paper 6 compound of pressure sensitive adhesive adhesion coating 5.
Claims (3)
1. a preparation method for glass microballoon sedimentation type reflective membrane, comprises reflective surface rete, comprises the reflector layer of glass microballoon and focus layer resin, metallic reflector, pressure sensitive adhesive adhesion coating and releasing ply of paper, it is characterized in that, carry out as follows:
A, making reflective surface rete;
B, making reflector layer:
A. glass microballoon and acroleic acid polymerization modification focus layer resin are mixed by a certain percentage also high-speed stirred even, stirring rate controls as 3000-3500 revolutions per second, and mixing time controls to be 10-30 minute; The solid content of described acroleic acid polymerization modification focus layer resin controls at 26-32%, and viscosity controls at 150-250cP, and in above-mentioned hybrid resin, add the silicone oil froth breaking levelling agent of 0.5%, counts by weight percentage;
B, coat on reflective surface rete by above-mentioned mixed resin material, its thickness is greater than the diameter of glass microballoon, after in the drying tunnel of 50 DEG C-130 DEG C, carry out baking dry, wherein the settling temperature in front road controls at 50-70 DEG C, and the residence time is greater than 40s;
The vacuum evaporation in C, laggard row metal reflection horizon, then be coated with the releasing ply of paper compound of pressure sensitive adhesive adhesion coating;
Wherein: described glass microballoon is through the chemically treated high refractive index glass micro pearl of sedimentation, be specially: through sedimentation chemical treatment, described glass microballoon refers to that described glass microballoon first carries out pickling, the silane coupling agent of 5% is added again after drying, the sodium dodecylsulphonate of 1%, count by weight percentage, be uniformly mixed, and completely dry.
2. preparation method according to claim 1, is characterized in that: the transmittance of described reflective surface rete is greater than 90%, and THICKNESS CONTROL is at 50-55 μm.
3. according to the preparation method described in claim 1, it is characterized in that: the ratio of described glass microballoon and acroleic acid polymerization modification focus layer resin is 1: 3-6, calculates by mass percentage.
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| CN104360427A (en) * | 2014-12-03 | 2015-02-18 | 常州华日升反光材料股份有限公司 | Reflective film for advertisement |
| CN104965252A (en) * | 2015-07-01 | 2015-10-07 | 合肥鼎亮光学科技有限公司 | Glass bead for guide post reflective film and preparation method thereof |
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| CN104965247A (en) * | 2015-07-01 | 2015-10-07 | 合肥鼎亮光学科技有限公司 | Glass bead for outdoor advertisement reflective membrane and preparation method thereof |
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| CN104927312A (en) * | 2015-07-01 | 2015-09-23 | 合肥鼎亮光学科技有限公司 | Glass microspheres for polyester reflective film and preparation method thereof |
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| CN114196355A (en) * | 2021-12-30 | 2022-03-18 | 常州华日升反光材料有限公司 | Preparation method of bead-sinking adhesive for sedimentation type reflective film |
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Address after: 213144 Jiangsu province Changzhou City Zhonglou District Zou Yue Yang Road, No. 8 Patentee after: Changzhou Hua R Sheng Reflective Material Co., Ltd. Address before: 213144 Jiangsu Province, Changzhou city Wujin District Industrial Park District Zou Zou Quzhen Yue Yang Road No. 8 Patentee before: Changzhou Hua R Sheng Reflective Material Co., Ltd. |