TWI246962B - Structure and method for making composite sheet - Google Patents

Description

1246962 V. DESCRIPTION OF THE INVENTION (1) The present invention relates to a composite layer structure retroreflective sheeting and a manufacturing method thereof, and more particularly to a structure and a manufacturing method of a nighttime safety reflective composite sheet. The reflective composite sheet structure means that the incident light from the light source can be reflected back to the original light source direction or combined with the principle of reflection and refraction to reflect part of the incident light to other directions than the light source. The general application of reflective sheet materials and structures is mainly to provide safe reflector applications on a road or warning. Especially at night, these reflectors must be able to provide enough reflected light for the approaching driver to increase the night direction indication. safety.

Reflective composite sheet structures typically include an optical lens, a polymer binder layer, and a reverse layer of ten layers. The optical lens usually refers to transparent microbead particles partially embedded in the polymer adhesive bonding layer, and the transparent microbead particles will have some height protruding from the polymer adhesion. On the bonding layer. As for the reflective layer, it is often deposited by an aluminum alloy vapor deposition ion on the interface of the transparent microbead particles embedded in the polymer adhesive bonding layer. When an incident light is sent from the light source, the incident light is first reflected through the microparticles and then reflected by the reflective layer, and then passes through the microparticles along the original path to return to the direction of the original incident light source.

Please refer to Figures 1A to 1B for a schematic cross-sectional view showing the manufacturing process of the conventional reflective composite sheet structure. Please refer to Figure 丨A. First, a thermal barrier layer 1 3 ' is not provided. The melting temperature is less than 2 〇〇 degrees below Celsius. The material is, for example, polyethylene poly dimethyl ketone (ρ Ε τ ). . A material of a heat-softening layer 14 (h e a t s 〇 f t e n a b 1 e 1 a y e r) is then coated on one side of the heat barrier layer 13 . The material of the thermal softening layer 丨4 includes 矽 oxygen

Page 6 1246962 V. Description of invention (2) High molecular weight materials such as vinegar, polyester, polyethylene, and wax. This thermosoftening layer 14 produces softening at temperatures of at least 95 degrees Celsius. A portion of the appropriately sized transparent particles 11 is buried in the heat softening layer 14, that is, a portion of the height of the transparent particles 11 is exposed. Next, a metal reflective layer 16 is formed on the surface of the transparent particles 11 by vapor phase evaporation of aluminum metal. Subsequently, an adhesive layer 15 is applied to the other side of the metal reflective layer 16. The structure as shown in Fig. 1A has thus been formed. Referring to FIG. 1B, the structure shown in FIG. 1A is then placed on a base 18 because the adhesive layer 15 can adhere to the substrate 18, the metal reflective layer 16 and the transparent particles 11, so that it can be easily The transparent particles 11 are stripped from the heat softening layer 14 and the heat with the support layer 13. However, because the traditional reflective composite sheet structure requires a lot of materials and manufacturing steps and cumbersome manufacturing steps, and some of the steps require high process conditions, such as metal vapor phase evaporation treatment environment has low vacuum requirements. Uniform requirements with the thickness of the money layer, high process difficulty, and high hardware cost will greatly increase the manufacturing cost of the product. In view of the above-described drawbacks of the conventional art, it is an object of the present invention to provide a method of manufacturing a reflective composite sheet structure that simultaneously simplifies the process steps and effectively reduces manufacturing costs. To achieve the above and other objects of the present invention, the present invention provides a method of fabricating a retroreflective sheeting structure comprising providing a metal layer. A first adhesive layer is formed to cover one side of the metal layer. Further, a second adhesive layer is formed to cover the other side of the metal layer in a comprehensive or partial area. a plurality of particles are then on the surface of the second adhesive layer, wherein the particles can enter

Page 7 1246962 V. INSTRUCTIONS (3) A system that has transparency or is partially mixed with ball beads. However, when there is a reflective ball bead particle, the ball bead portion is partially high and the pressure is high. The granules are exposed and some of the particles are exposed. ^ ff After the lateral extension, the metal layer is close to the ball The surface of the bead granules, the light mirror surface structure of the fort step, that is, the sag of the slab 2, ▲ a special anti-metal surface metal material used in the surface of the singularity, the material can be U, single & Dependent, $ metal and excellent ductility metal box, such as steamed, bright surface: electric ore such as copper, nickel, chrome two or bright metal plating pig, good material for the material, the main J ::2 or Shao foil. Among them, the high-quality, low-cost and non-oxygen 2 causes U to be extended by 18 materials. Manufactured by another type of reflective composite sheet, a metal layer is provided. A first adhesive layer is formed on the side of the first-adhesive G = genus layer. Then, a plurality of particles are formed or are formed by the second part, wherein the particles may be all transparent and uniformly mixed. The bran and some of the reflective spherical particles are evenly squeezed, and the ball beads are pressed; Into a stack of pressure wheels to carry out - rolling step delay and naked Ϊ:; 2; after the ball granules are partially sideways toward the metal layer, the metal slag, a door and the other particles, after this - rolling step Reflective mirror knot; the surface of the teaching side is rolled and rolled into a special hemispherical structure of the king's now concave, making the hair

1246962 V OBJECT DESCRIPTION OF THE INVENTION (4) _____ The composite layer of the reflector is formed on the other side of the metal layer. The reflective effect is additionally formed. The second adhesive layer has a hardness greater than that of the particulate material in this embodiment. The pressure roller on the attacking particle side has a smooth flat surface and the hardness is smaller than the particles, and the other pressure roller surface on the other side of the metal foil is selected from the material of the present invention, the material of which is close to or close to the hardness of the metal foil. Increase production capacity. The conventional process of 5 Γ $ 5 is simpler, so that it is possible to effectively use the metal gas-gas shovel to make a small material combination, and the present invention does not require a substantial reduction in manufacturing cost for the present invention. It is easy to understand, the following special _ his purpose, characteristics, and advantages can be more clearly explained as follows. ΜExample, with the attached U, for a brief description of the detailed diagram: The first to the first diagram shows the conventional A cross-sectional view of a manufacturing process of a retroreflective structure; a cross-sectional view of a manufacturing process of a reflective composite sheet structure according to a preferred embodiment of the present invention; and 3A to 3D A cross-sectional view showing the manufacturing process of the reflective composite sheet structure of another preferred embodiment of the present invention. Figure 5: Tiger self-brothers · 11 particles 13 thermal barrier layer 14 thermal soft layer 15 adhesive layer 16 metal reflective layer

1246962 V. INSTRUCTIONS (5) 18 Substrate 30 Metal layer 32 Adhesive layer 34 Release layer 36 Adhesive layer 38 Particle 39 Protective layer 40 Metal layer 42 Adhesive layer 44 Particle 46 Adhesive layer 48 Release layer 49 Protective layer First implementation For example, please refer to FIGS. 2A-2D, which are cross-sectional views showing a manufacturing process of a reflective composite sheet structure in accordance with a preferred embodiment of the present invention. First, please refer to FIG. 2A to provide a metal layer 30 having a thickness of about 0.2 // m to 50 //m, and then applying a thickness of about 2//m to 200 on one side of the metal layer 30. The adhesive layer 32 of /zm preferably has a thickness ranging from 5/zm to 100/zm, which is also known as a glue layer. The material of the metal layer 30 has a flat surface and bright characteristic, and is a metal material having reflective properties and excellent ductility. The material may be a single metal layer such as copper foil, a foil, an alloy foil, a metal vapor phase vapor-deposited metal. Foil, such as aluminum vapor-deposited aluminum foil, electroless plating metal pig or glossy metal foil,

Page 10 1246962

For example, plating copper, nickel, chrome, tantalum, etc., among which it is preferable to use copper foil or aluminum foil of material, gold, silver, etc. as the low cost and weather resistance material using aluminum material, the main reason is easy. In addition, in order to facilitate subsequent use: not easy to oxidize, the processability fits a layer of release layer (release Un j can be on the other side of the adhesive layer 32 paper or release film. 'The release layer 34 can be released to the adhesive layer The material of 32 can be such as % gentry, take _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ It is necessary to have strong adhesiveness to the metal layer 30, and it is required from >

^ ^ , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Or a crosslinking agent, etc., depending on the type of adhesive and adhesive material used, an appropriate adhesive modifier is selected, and the adhesive modifier is selected from the group consisting of a stone oxide compound (si 1) Ane compound), boric acid esters, zirconium aluminate (zi rcon i um

A system of any of the groups of aluminates) or the like. In addition to the above-mentioned applicable adhesive system, the above-mentioned applicable adhesive modifier system may be used, or the adhesive layer may be impregnated or coated on both sides of the metal layer 30. Please refer to Figure 2B, and then on the other side of the metal layer 30, that is, the uncoated side, the entire layer is coated partially or partially to a thickness of about 〇·5 // m to 5 0 //m The adhesive layer 36, if the adhesive layer 36 is applied in a partial area, the coated adhesive layer 36 can be made to have a reflective effect on a partial area.

Page 11 1246962 V. Description of invention (7) Light composite sheet. In addition, if the reflective composite sheet structure is to have reflected light of different colors, the dyes of different colors may be blended in all areas or different regions of the adhesive layer 36, and the adhesive layer of different colors may be printed by means of printing. 6 Printing is applied to the metal layer 3 〇. Alternatively, the phosphor material may be incorporated into the adhesive layer 36 so that the retroreflective sheet structure is fluorescent. In addition, the size of the layer 36 and the viscous portion are transparent to the transparency of the bead particles. Reflectively, such as metal, is an example. Then, then. Then, it is bonded, so that it can form the granules 38. It is not limited to the proportional separation system, the end glass ball and the surface glass ball. Structure of the structure, Figure 2B shows the other side of the adhesive dense assembly

Form 2B of the invention as shown in Fig. 2B. Then, the appropriate size stacking method is applied to the adhesive layer at a viscosity of about 5/zm to 400/m. In this range, the size of the particles 38, and the particles 38 may be fully visible and partially reflective depending on the application. It has polyhedral polyhedral particles, and is coated with a reflective film glass ball. However, the notable step is only a process step used in one of the inventions, and is not limited to the layer 3 to be coated on the adhesive layer on one side of the metal layer 3 The table of 36 forms another layer of adhesive layer 32, the exposed side of the adhesive surface structure. In fact, as long as a plurality of particles 38 are on the surface of the sample, wherein the size of the particles 38 is equal to the thickness of the layer 36, or the particles uniformly mixed by the portion 38, at least include particles, at least money or The glass of the vapor-deposited film is formed as described above. FIG. 2B shows that the present invention can be used to form the present invention. The particle 38 can be firstly formed to be the most compact, and then the metal layer 30-layer release layer 34 is formed on the adhesive layer 32.

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The steps are not departing from the scope of the invention. The boat r ί refers to the 2C figure 'following the light pressure step', for example, to the semi-finished structure shown in Fig. 2, so that the == the pressure of the pressure roller is extended to the particle diameter: to the heart: 3 degrees 8 towards 1 / Γ疋:: The height of the exposed particles is about 2/3 of the particle diameter and 2 to the soil. , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Depression: , = 38 into conformal (conformal). In addition, the buffering step 32 and the immediately adjacent release layer 34 act as a buffer layer. The layer of the nail layer Up to this point, the surface of the metal layer near the particle side is rolled and expanded into a special mirror structure, that is, a hemispherical structure exhibiting a depression, so that the composite layer reflector of the present invention has a reflective effect. ^ In addition, in order to enhance the adhesion strength between the adhesive layer 36 and the particles 38, the interface between the adhesive layer 36 and the particles 38 can be better contacted by applying a higher rolling temperature during the rolling process. (we 11丨ng) effect to improve the adhesion strength, or an adhesion promoter can be added to the adhesive layer 36. Generally, a commonly used modifier can use a coupling agent and a chelate. Or a crosslinking agent, etc., depending on the type of adhesive and adhesive material used, an appropriate adhesive modifier is selected, and the adhesive modifier is selected from the group consisting of 1 anec 〇m ρ 〇und), titanates, aluminates, boric acid esters, zirconium aluminates, etc.

Page 13 1246962 V. INSTRUCTIONS (9) A system of any of the constituent ethnic groups or the above-mentioned hybrids. The weight percent addition range is from about 〇.丨% to about 18% by weight, preferably from about 0.3% to about 5.0% by weight. By adding the above coupling agent, not only the adhesion strength between the particles 38 and the adhesive layer 36 can be greatly improved, but also the adhesion between the adhesive layer 36 and the metal layer 3 can be increased to promote the adhesion of the particles to the metal layer more firmly. on. Similarly, in order to increase the adhesion between the particles 38 and the adhesive layer 36, the particles may be impregnated into a suitable coupler solution prior to application of the particles 38 to the adhesive layer 36, and then dried.

Another method of improving the adhesion between the adhesive layer 3 6 , 3 2 and the surface of the metal layer 3 includes coating or impregnating a surface of the metal foil with a suitable coupling agent as described above before applying the adhesive layer. To enhance the adhesive bond strength. Please refer to the 2nd D picture. In order to further protect the particles 3 8 to prevent the particles from falling off and to block the influence of external moisture on the reflective material, a protective layer of light having a translucent property can be coated to cover the particles 3 8 . Exposed on one side, the material includes acrylic, polyurethane (1) 〇17111^1^&1^,1)1]), epoxy resin, epoxy polyamine and other molecular materials, or pressurized Laminated with scotch tape or a hot-pressed polymer material with soft and transparent properties, such as transparent polyethylene (polyethylene), polyvinyl chloride (PVC), polyvinyl acetate (PVA), poly Carbonate S (p〇iycarbonate, PC), polymethylmethacrylate (PMMA), ^0 (polysulf〇ne, PS) and other materials. According to the manufacturing method of the present invention, if the particles 38 are all transparent

Page 14 1246962 V. Invention Description (10) "" ί*生贝' The reflective composite structure of the present invention can reflect most of the incident light from the light source back to the original source. In contrast, if the granular portion of the particles has transparency and is partially reflective, the reflective composite sheet structure of the present invention can reflect most of the incident light emitted by the light source back to the original light source and partially reflect the optical error by optical reflection. Reflected in a different direction than the light source with the principle of refraction. At this time, it is also possible to add and mix different kinds of reflective particles or different size granules or polygonal polyhedral reflective particles (not shown), thereby enhancing the illuminance of other directions, and having a multi-directional nighttime reflective mark. The function. SECOND EMBODIMENT Referring to Figures 3 to 3D, there is shown a cross-sectional view showing a manufacturing process of a reflective composite sheet structure in accordance with another preferred embodiment of the present invention. First, please refer to FIG. 3A to provide a metal layer 40 having a thickness of about 〇·2 #m to 5 0 // m, and then coated on one side of the metal layer 40, comprehensively or partially. The upper adhesive layer 42 having a thickness of about 0.2 /zm to 50 / melon, if the coating method of selecting a partial area is adopted, the coated adhesive layer 42 may have an arbitrary shape or pattern. The material of the metal layer 4 and the adhesive layer 42 is as described in the first embodiment. In addition, if the reflective composite sheet structure is to have reflected light of different colors, the dyes of different colors may be blended in all regions or different regions of the adhesive layer 42, for example, printing adhesive layers of different colors are printed by means of printing. It is coated on the metal layer 40. Referring to Figure 3B, a plurality of particles 44 of an appropriate size are then coated and adhered to the surface of the adhesive layer 42 in a most compact manner, for example.

Page 15 1246962 V'Inventive Note (11) Particles in which the straight portion of the particle 44 has transparency or uniformity of transparency of the ball particles 4 4 Reflective particles such as metal plating or steaming refer to the 3C rolling 3B The metal layer 40 side of the metal layer is shown to be close to the particle side structure of the particle layer, that is, the layer 4 of the pressure roller surface near the metal foil having the other side of the reflective sheet having the reflective side of the particle 4 4 side. 2 For the uniform and concave, please refer to the side of the 3D sizing, and apply layer 46. In addition, the ~ side is laminated to a layer of about 5 / zm to 250 / / m, and the particles 44 are made up of a part of the system with transparency and partial integration, including at least the glass sphere and the polyhedral polyhedron depending on the application. The particles include at least a glass sphere coated with a reflective film film on the surface. The Figure' is followed by a rolling step, such as a semi-finished structure, whereby the above-described particle diameter is from 1/3 to 1/2 of the depth, and the height is about 2/3 to 1/2 of the particle diameter. The surface of the surface is rolled and expanded into a hemispherical structure of a special reflective depression to make the effect of the present invention. At this time, unlike the wheel of the first embodiment, the wheel has a smooth flat surface and the hardness is larger than the particle, and the hardness is less than that of the particle 4 4 but a hardness material. After the rolling step, the metal particles 44 are conformed. Figure 'Next on the other side of the metal layer 4 ,, the other layer of the thickness of about 15 / zm to 200 for the convenience of subsequent use, also in the adhesive layer 48, the release layer 48 may be release paper or may be full Reflective. With the granules, as for the glass spheres, the granules 44 of the pressure roller group are oriented so that the composite layer of the gold mirror surface is at the granules 4 4 . The adhesion layer 46 which is lower than or with the layer 40 and the adhesion is not / / m is another release type 13⁄4 ^ m ^ 7 is called diffuse: ϊ moisture for the reflective material to prevent the particles from falling off and can be coated with a layer Light

1246962 V. INSTRUCTIONS (12) The protective layer of the protective layer 4 9 covers one side of the bare metal, and the material thereof includes a polymer material such as acrylic, polyurethane, epoxy resin or epoxy polyamine. Either pressure-bonded scotch tape or a hot-pressed polymer material with soft and transparent properties, such as transparent polyethylene (PE), polyvinyl chloride (PVC), and polyethyl silicate (p 〇iyVinyi acetate, PVA), polycarbonate (PC), polymethylmethacrylate (PMMA), polysulfone (PS) and other materials.

Further, if all of the particles 44 have a transparent property, the reflective composite sheet structure of the present invention can totally reflect the incident light emitted by the light source back to the direction of the original light source. In contrast, if the portion of the particle 44 is transparent and partially reflective, the reflective composite structure of the present invention can reflect most of the incident light emitted by the light source back to the original light source and partially reflect the light by optical reflection. The principle of refraction is reflected in different directions than the light source. At this time, it is also possible to use a mixture of particles having different proportions of reflective, granules, granules of different sizes or polygonal polyhedrons, so as to enhance the illuminance of the other directions, and to have the function of multi-directional reflection at night.

Meanwhile, as in the first embodiment, in order to enhance the adhesion strength between the adhesive layer 42 and the particles, the adhesion layer 4 2 and the particles 4 4 may be applied by applying a higher reading i: pulse during the rolling process. The interface has better contact with the wetting effect to improve the adhesion strength, or can be used in the adhesive layer 42 (adhesi〇n promoter), the commonly used modifier can use a coupling agent ((3) upling agent) Chelation

1246962 5, invention description (13) (chelate) or crosslinking agent (crosslinking agent), etc., depending on the type of adhesive and adhesive materials used, appropriate appropriate adhesive modifiers, adhesive modification The agent is selected from the group consisting of a sane compound, a titanates, an aluminas, a boric acid esters, and a zirconium alumina. A system of any of the groups of tes) or the like or a mixture of the above. The addition ratio ranges from about 〇 · i % to 丨 8% by weight, and preferably ranges from about 3% to 3% to 5% by weight. By adding the above coupling agent, not only the adhesion strength between the particles 44 and the adhesive layer 42 can be greatly improved, but also the adhesion between the adhesive layer 42 and the metal layer 40 can be increased, and the particles can be more firmly adhered to the metal layer. . Similarly, in order to increase the adhesion between the particles 44 and the adhesive layer 42, the particles may be impregnated into a suitable coupler solution prior to application of the particles 44 to the adhesive layer 42 and then dried. Another method for improving the adhesion between the adhesive layers 42 and 46 and the surface of the metal layer 4 includes coating or impregnating a surface of the metal foil with a suitable coupling agent as described above before applying the adhesive layer. Increasing the adhesion of the combination It is clear that the process of the present invention is far more efficient than the conventional process, so that the productivity can be effectively increased. In addition, since the preferred process of the present invention does not necessarily require the use of a metal vapor phase evaporation process, the skin is greatly reduced in manufacturing cost. One,

1246962

Page 19 1246962 Schematic description of the figure Φ Page 20

Claims (1)

1246962 6. Promoter, the adhesive modifier may be selected from any one of a group consisting of a coupling agent, a chelate, and a crosslinking agent and or Similar. 3. The manufacturing method of claim 1, wherein the step of pressing further comprises forming a transparent protective layer covering the particles. 4. The manufacturing method of claim 1, wherein the plurality of particles are stacked on the surface of the second adhesive layer in a most closely packed stack structure, further comprising the steps of: providing the metal layer; forming the The first adhesive layer covers the one side of the metal layer; the second adhesive layer is formed to cover the other side of the metal layer; and the particles are formed on the surface of the second adhesive layer. 5. The manufacturing method according to claim 1, wherein the step of providing the stacked structure further comprises the steps of: providing the metal layer; forming the second adhesive layer covering the side of the metal layer; forming The particles are on the surface of the second adhesive layer; and the first adhesive layer is formed to cover the other side of the metal layer. 6. The method of manufacture of claim 1, wherein a portion of the particles of the particles are reflective so that a portion of the incident light is directly reflected by the surfaces of the particles to other directions. 7. The manufacturing method of claim 1, wherein the step of pressing further comprises using a first pressure wheel having a suitable spacing and a second pressure wheel, and contacting the first of the particles The pressure applied by the pressure roller is higher than Page 1246962 VI. Patent application scope The second pressure roller. 8. The manufacturing method of claim 1, wherein the second adhesive layer has a partial area covering the one side of the metal layer. 9) A method for manufacturing a reflective composite sheet structure, comprising: providing a metal layer; forming a first adhesive layer covering one side of the three metal layers, the thickness of the adhesive layer being between 2//m and 200//m, suggesting The optimum adhesion layer thickness is between 5//Π1 and 1 0 0 // m; forming a plurality of particles on the surface of the first adhesive layer, wherein the particles are transparent; and performing a pressing step Squeezing the particles such that the particles are immersed toward the side of the metal layer and expose a portion of the particles, the particles being arranged in the closest packing manner, and the incident light rays passing through the particles will cause all incident rays to be incident. Returning to the surface of the metal layer and returning in the opposite direction of the incident direction and forming a second adhesive layer on the other side of the metal layer, the second layer thickness is between 2//m and 500/zm, it is recommended The optimum adhesive layer thickness is between 10//m and 400//m; wherein the first adhesive layer and the second adhesive layer adhesive material are selected from the group consisting of acry 1 ic adhesive, polyurethane, rubber, hot melt , silicone rubber, poly-smoke hand, raw rubber (polyolefin d Erivative adhesive), any of the groups of thermoplastic adhesives and or the like, among which the best _ materials are based on acrylic and hot melt adhesives. ^ 1 0 · The manufacturing method described in claim 9 of the patent application, wherein the The second easy page 1246692 6. The patent scope 1 and the second adhesive layer may be optionally added with an adhesive modifier (adhesi ο η promoter), and the adhesive modifier may be selected from a coupling agent (coupling agent) and a chelating agent. Any of the groups consisting of (chelate), a crosslinking agent, and the like. 1 1. The method of manufacturing of claim 9, further comprising forming a transparent protective layer covering the exposed particles. The manufacturing method according to claim 9, wherein a part of the particles of the particles are reflective so that part of the incident light is directly reflected to the other direction via the surfaces of the particles. 1. The manufacturing method of claim 9, wherein the step of rolling further comprises using a first pressure wheel and a second pressure wheel having a suitable spacing, wherein the first one of the particles is contacted The hardness of the wheel surface of a pressing wheel is greater than the hardness of the particles, and the hardness of the second surface of the second pressure roller contacting the metal layer is less than the particles but is higher than the hardness of the metal layer. The manufacturing method according to claim 9, wherein the first adhesive layer partially covers the one side of the metal layer. 1 5. A reflective composite sheet structure comprising: a metal layer; a first adhesive layer covering one side of the metal layer, the thickness of the adhesive layer being between 2//m and 200//m, suggesting the best adhesion The thickness of the layer is between 1 and 0 // m; a second adhesive layer covers the other side of the metal layer, and the thickness of the second adhesive layer is between 2//m and 500/zm, suggesting the best adhesion The layer thickness is between 10//m and 400//m; The second flat page 1246692 6. Patent application scope A plurality of particles are located on the surface of the second adhesive layer, and the sorghum is called 'the granules are transparent, and the particles are oriented toward the metal. The micro-calender phoenix is trapped and exposed to a part of the height of the particles, the scent of the scent L, the field ^ 丨 丨 丨 Μ Μ Μ Μ Μ Μ Μ Μ , , , , 入射 入射 入射 入射 入射 入射 入射 入射 入射 入射 入射 入射 入射 入射 入射 入射* W 疋 疋 疋 沿 沿 沿 入 入 入 沿 沿 沿 沿 沿 沿 沿 经 经 经 经 经 经 经 经 经 经 经 经 经 经 经 经 经 经 经 经 经 经 经 The first adhesive layer and the second adhesive layer adhesive material are selected from the group consisting of ay 1 ic glue, polyurethane, rubber, hot melt adhesive, silicone rubber, polyolefin derivative adhesive, and thermoplastic adhesive. Any of the constituent groups and or the like, wherein the best adhesive material is recommended to be aery 1 ic glue and hot melt adhesive. 1 6 · The reflective composite sheet structure according to claim 15 , wherein the adhesive layer may be optionally added with an adhesion promoter, and the adhesive modifier may be selected from the group consisting of Any of a group consisting of a coupling agent, a chelate, and a cross 1 inking agent and or the like. The structure of claim 5, wherein a part of the particles of the particles are reflective so that part of the incident light is directly reflected by the surfaces of the particles to other directions. The structure of claim 5, wherein the second adhesive layer partially covers the side of the metal layer. The structure of claim 5, wherein the first adhesive layer covers the other side of the metal layer and comprises a release layer. Page 25