Composite transparent plate and manufacturing method thereof

Abstract

The invention discloses a composite transparent plate and a manufacturing method thereof. The manufacturing method of the composite transparent plate comprises a feeding step and a forming step. In the feeding step, a first resin, a second resin and a third resin are respectively fed into a first extruder, a second extruder and a third extruder to correspondingly form a composite transparent film comprising a first layer, a second layer and a third layer. The first resin is selected from a material group consisting of Tairilin 3824, Tairilin 3842, Tairilin 390A, Tairilin P115, Tairilin 663G, and # imgabs0 # S2008, and the second resin is selected from a material group consisting of Tairilin 3824, Tairilin 3842, Tairilin 390A, Tairilin P115, Tairilin 663G, and # imgabs0 # S2008. In the forming step, the composite transparent film sequentially passes through a first forming wheel, a second forming wheel and a third forming wheel to form the composite transparent plate. The composite transparent plate has the haze ranging from 0.75% to 4% and the light penetration rate ranging from 86% to 91.5%.

Description

Technical Field

[0001] The invention relates to a composite transparent plate and a manufacturing method thereof, in particular to a PET composite transparent plate and a manufacturing method thereof. Background Art

[0002] The existing PET transparent plate is generally formed using only a single raw material, so it is impossible to optimize the different layers of the transparent plate. In addition, the existing transparent plate is prone to crystallization and whitening during molding. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a composite transparent plate and a manufacturing method thereof in view of the deficiencies of the prior art, so as to improve the problem that the prior transparent plate is prone to crystallization and whitening during molding.

[0004] In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide a method for manufacturing a composite transparent plate, which includes: a feeding step, respectively feeding a first resin, a second resin and a third resin into a first extruder, a second extruder and a third extruder to form a composite transparent film including a first layer, a second layer and a third layer; wherein the first resin is selected from Tairilin 3824, Tairilin 3842, Tairilin 390A, TairilinP115, Tairilin 663G and S2008, the second resin is selected from the material group consisting of Tairilin 3760 and Tairilin 3842, and the third resin is selected from the material group consisting of Tairilin3760, Tairilin 3842, Tairilin 380R and Tairilin 384R; and a molding step, allowing the composite transparent film to pass through a first molding wheel, a second molding wheel and a third molding wheel in sequence to be molded into a composite transparent plate; wherein the absolute value of the difference between the temperature of the first molding wheel and the temperature of the second molding wheel is not greater than 5°C, and the ratio of the temperature of the third molding wheel to the temperature of the first molding wheel or the temperature of the second molding wheel is between 1.8 and 3.5; wherein the composite transparent plate has a haze between 0.75% and 4% and a light transmittance of 86% to 91.5%.

[0005] Preferably, the first resin has an intrinsic viscosity between 0.63 dl / g and 1.1 dl / g, the second resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g, and the third resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g.

[0006] Preferably, the temperature of the first molding wheel is between 18°C ​​and 25°C, the temperature of the second molding wheel is between 18°C ​​and 25°C, and the temperature of the third molding wheel is between 35°C and 58°C.

[0007] Preferably, the first layer, the second layer and the third layer in the composite transparent plate are arranged in the following manner: third layer / second layer / first layer / second layer / third layer, third layer / second layer / first layer / second layer, third layer / second layer / first layer / third layer, or third layer / second layer / first layer.

[0008] Preferably, based on 100% of the thickness of the composite transparent plate, the thickness of the first layer accounts for 40% to 70%, the thickness of the second layer accounts for 15% to 40%, and the thickness of the third layer accounts for 10% to 20%.

[0009] Preferably, the thickness of the composite transparent plate is between 0.5 mm and 8 mm.

[0010] In order to solve the above technical problems, another technical solution adopted by the present invention is to provide a composite transparent plate, which comprises: a first layer, formed by a first resin, and the first resin is selected from Tairilin 3824, Tairilin 3842, Tairilin 390A, Tairilin P115, Tairilin 663G and S2008; a second layer, formed by a second resin, and the second resin is selected from the material group consisting of Tairilin 3760 and Tairilin 3842; and a third layer, formed by a third resin, and the third resin is selected from the material group consisting of Tairilin 3760, Tairilin 3842, Tairilin 380R and Tairilin 384R; wherein the composite transparent plate has a haze between 0.75% and 4% and a light transmittance of 86% to 91.5%.

[0011] Preferably, the first resin has an intrinsic viscosity between 0.63 dl / g and 1.1 dl / g, the second resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g, and the third resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g.

[0012] Preferably, the first layer, the second layer and the third layer in the composite transparent plate are arranged in the following manner: third layer / second layer / first layer / second layer / third layer, third layer / second layer / first layer / second layer, third layer / second layer / first layer / third layer, or third layer / second layer / first layer.

[0013] Preferably, based on 100% of the thickness of the composite transparent plate, the thickness of the first layer accounts for 40% to 70%, the thickness of the second layer accounts for 15% to 40%, and the thickness of the third layer accounts for 10% to 20%.

[0014] The beneficial effect of the present invention is that the composite transparent plate and the manufacturing method thereof provided by the present invention can be obtained by "the first resin is selected from Tairilin 3824, Tairilin 3842, Tairilin 390A, TairilinP115, Tairilin 663G and The technical solution of "the material group consisting of S2008, the second resin is selected from the material group consisting of Tairilin 3760 and Tairilin 3842, and the third resin is selected from the material group consisting of Tairilin3760, Tairilin 3842, Tairilin 380R and Tairilin 384R" is used to improve the problem of crystallization and whitening of the existing transparent plate during molding.

[0015] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic flow chart of a method for manufacturing a composite transparent plate according to an embodiment of the present invention.

[0017] Figures 2 to 6 Schematic diagrams of composite transparent plates according to different exemplary embodiments of the present invention. DETAILED DESCRIPTION

[0018] The following is an explanation of the implementation methods of the "composite transparent plate and its manufacturing method" disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following implementation methods will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0019] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0020] [Method for manufacturing composite transparent plate]

[0021] See also Figure 1 As shown, Figure 1 The schematic diagram of the manufacturing method of the composite transparent plate according to the embodiment of the present invention is as follows: The manufacturing method of the composite transparent plate includes a feeding step S110 and a cooling step S120, and the manufacturing method of the composite transparent plate may also include other steps according to requirements, but the present invention is not limited thereto.

[0022] In the feeding step S110, the first resin, the second resin and the third resin are respectively fed into the first extruder, the second extruder and the third extruder to form a composite transparent film including a first layer A, a second layer B and a third layer C. Specifically, the first resin, the second resin and the third resin can be fed into the first extruder, the second extruder and the third extruder in the form of pellets.

[0023] The first resin is selected from Tairilin 3824, Tairilin 3842, Tairilin 390A, Tairilin P115, Tairilin 663G and The second resin is selected from the material group consisting of Tairilin 3760 and Tairilin 3842, and the third resin is selected from the material group consisting of Tairilin 3760, Tairilin 3842, Tairilin 380R and Tairilin 384R.

[0024] The melting point temperature (Tm) of Tairilin 3824 is 238°C, the melting point temperature of Tairilin 3842 is 246°C, the melting point temperature of Tairilin 390A is 228°C, the melting point temperature of Tairilin P115 is 228°C, Tairilin 663G has no melting point temperature, SK 2008 has no melting point temperature, the melting point temperature of Tairilin 380R is 248°C, and the melting point temperature of Tairilin 384R is 248°C.

[0025] The melting point temperature of the first resin may be between 228°C and 246°C or have no melting point temperature, the melting point temperature of the second resin may be between 246°C and 255°C, and the melting point temperature of the third resin may be between 246°C and 255°C.

[0026] The first resin has an intrinsic viscosity between 0.63 dl / g and 1.1 dl / g, the second resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g, and the third resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g. Preferably, the second resin has an intrinsic viscosity between 0.76 dl / g and 0.84 dl / g, and the third resin has an intrinsic viscosity between 0.76 dl / g and 0.84 dl / g.

[0027] In one embodiment, the first resin may be a copolyester formed by copolymerizing one or more alcohols selected from ethylene glycol, propylene glycol, and 1,4-cyclohexanedimethanol with one or more acids selected from isophthalic acid, terephthalic acid, and 2,6-naphthalene dicarboxylic acid. In one embodiment, the second resin and the third resin are polyethylene terephthalate or a modified polyester composition, but the present invention is not limited thereto.

[0028] The first resin contains diol residues and dicarboxylic acid residues. When the total amount of the dicarboxylic acid residues is regarded as 100 mol%, the content of terephthalic acid residues is 70 mol% to 99 mol%, the content of isophthalic acid residues is 1 mol% to 30 mol%, and the content of 2,6-naphthalene dicarboxylic acid residues is 0 mol% to 30 mol%; when the total amount of the diol residues is regarded as 100 mol%, the content of the ethylene glycol residues is 50 mol% to 100 mol%, the content of the propylene glycol residues is 0 mol% to 50 mol%, and the content of the cyclohexanedimethanol residues is 0 mol% to 50 mol%. The isophthalic acid residue has an effect of inhibiting crystallinity, so that the first resin can have a specific melting point temperature.

[0029] In the forming step S120 , the composite transparent film is sequentially passed through a first forming wheel, a second forming wheel, and a third forming wheel to be formed into a composite transparent plate 100 .

[0030] The absolute value of the difference between the temperature of the first molding wheel and the temperature of the second molding wheel is not greater than 5°C, and the ratio of the temperature of the third molding wheel to the temperature of the first molding wheel or the temperature of the second molding wheel is between 1.8 and 3.5. In other words, the temperature of the first molding wheel and the temperature of the second molding wheel are close to each other, and the temperature of the first molding wheel may be greater than, equal to or less than the temperature of the second molding wheel. Preferably, the ratio of the temperature of the third molding wheel to the temperature of the first molding wheel or the temperature of the second molding wheel is between 1.8 and 3.5.

[0031] In this embodiment, the temperature of the first molding wheel is between 18°C ​​and 25°C, the temperature of the second molding wheel is between 18°C ​​and 25°C, and the temperature of the third molding wheel is between 35°C and 58°C. Preferably, the temperature of the first molding wheel is between 18°C ​​and 20°C, the temperature of the second molding wheel is between 18°C ​​and 22°C, and the temperature of the third molding wheel is between 51°C and 58°C. It is worth mentioning that in the molding step S120 in this embodiment, the composite transparent film is cooled by the first molding wheel and the second molding wheel, and the stress of the composite transparent plate is eliminated by the third molding wheel.

[0032] It is worth mentioning that the specific structures of the first extruder, the second extruder, the third extruder, the first molding wheel, the second molding wheel and the third molding wheel mentioned in the present invention can be changed according to needs or can be generally known devices, and as long as the first extruder, the second extruder, the third extruder, the first molding wheel, the second molding wheel and the third molding wheel can be used to implement the manufacturing method of the composite transparent plate, the present invention does not limit the specific structures of the aforementioned devices.

[0033] See also Figures 2 to 6 As shown, Figures 2 to 6 Schematic diagrams of composite transparent plates of different exemplary embodiments of the present invention. The composite transparent plate 100 may be a three-layer structure, a four-layer structure, or a five-layer structure. Specifically, the first layer, the second layer, and the third layer in the composite transparent plate are arranged in the following manner: third layer / second layer / first layer / second layer / third layer, third layer / second layer / first layer / second layer, third layer / second layer / first layer / third layer, or third layer / second layer / first layer, but in other embodiments, the specific stacking method of the first layer, the second layer, and the third layer in the composite transparent plate may also vary according to requirements, and the present invention is not limited thereto.

[0034] In terms of thickness, based on the thickness of the composite transparent plate 100 being 100%, the thickness of the first layer A accounts for 40% to 70%, the thickness of the second layer B accounts for 15% to 40%, and the thickness of the third layer C accounts for 10% to 20%. The thickness of the composite transparent plate 100 may be between 0.5 mm and 8 mm, and preferably, the thickness of the composite transparent plate 100 may be between 2 mm and 8 mm.

[0035] It is worth mentioning that the number of the second layer B and the third layer C can be one or two. When the number of the second layer B or the third layer C is two, the thickness of the aforementioned second layer B refers to the total thickness of the two second layers B, and the thickness of the aforementioned third layer C refers to the total thickness of the two third layers C.

[0036] The composite transparent plate 100 has a haze ranging from 0.75% to 4% and a total light transmittance ranging from 86% to 91.5%. It is worth mentioning that the light transmittance is measured according to the ISO 14782 method with a wavelength of 400 nm to 800 nm.

[0037] [Composite transparent board]

[0038] The embodiment of the present invention also provides a composite transparent plate 100 . The composite transparent plate 100 may be obtained by implementing the aforementioned method for manufacturing the composite transparent plate, but the present invention is not limited thereto.

[0039] The composite transparent plate 100 includes a first layer A, a second layer B and a third layer C. The first layer A is formed of a first resin, and the first resin is selected from the material group consisting of Tairilin 3824, Tairilin 3842, Tairilin 390A, Tairilin P115, Tairilin 663G and SK 2008. The second layer B is formed of a second resin, and the second resin is selected from the material group consisting of Tairilin 3760 and Tairilin 3842. The third layer C is formed of a third resin, and the third resin is selected from the material group consisting of Tairilin 3760, Tairilin 3842, Tairilin 380R and Tairilin 384R. Preferably, the material of the first resin is not the same as the material of the second resin and the material of the third resin at the same time.

[0040] The first resin has an intrinsic viscosity between 0.63 dl / g and 1.1 dl / g, the second resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g, and the third resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g. Preferably, the second resin has an intrinsic viscosity between 0.76 dl / g and 0.84 dl / g, and the third resin has an intrinsic viscosity between 0.76 dl / g and 0.84 dl / g.

[0041] In this embodiment, the composite transparent plate is a three-layer structure, a four-layer structure or a five-layer structure. Specifically, the first layer, the second layer and the third layer in the composite transparent plate are arranged in the following manner: third layer / second layer / first layer / second layer / third layer, third layer / second layer / first layer / second layer, third layer / second layer / first layer / third layer, or third layer / second layer / first layer.

[0042] Based on the thickness of the composite transparent plate 100 being 100%, the thickness of the first layer A accounts for 40% to 70%, the thickness of the second layer B accounts for 15% to 40%, and the thickness of the third layer C accounts for 10% to 20%.

[0043] The composite transparent plate 100 has a haze ranging from 0.75% to 4% and a light transmittance ranging from 86% to 91.5%.

[0044] [Experimental data test]

[0045] Hereinafter, the present invention will be described in detail with reference to Examples 1 to 6 and Comparative Examples 1 to 2. However, the following examples are only provided to help understand the present invention, and the scope of the present invention is not limited to these examples.

[0046] Example 1: The first resin is Tairilin 3824, the second resin is Tairilin 3760, and the third resin is Tairilin 3760. The intrinsic viscosity of the first resin is 0.82 dl / g, the intrinsic viscosity of the second resin is 0.76 dl / g, and the intrinsic viscosity of the third resin is 0.76 dl / g. The thickness of the first layer accounts for 40%, the thickness of the second layer accounts for 40%, and the thickness of the third layer accounts for 20%. The temperature of the first molding wheel is 18°C, the temperature of the second molding wheel is 18°C, and the temperature of the third molding wheel is 51°C. The composite transparent plate comprises a total of 5 layers (such as Figure 2 As shown) and the stacking method is C / B / A / B / C (A represents the first layer, B represents the second layer, and C represents the third layer).

[0047] Example 2: The first resin is Tairilin 3842, the second resin is Tairilin 3842, the third resin is Tairilin 3760, the intrinsic viscosity of the first resin is 0.84 dl / g, the intrinsic viscosity of the second resin is 0.84 dl / g, the intrinsic viscosity of the third resin is 0.76 dl / g, the thickness of the first layer accounts for 70%, the thickness of the second layer accounts for 15%, the thickness of the third layer accounts for 15%, the first molding wheel temperature is 20°C, the second molding wheel temperature is 20°C, the third molding wheel temperature is 58°C, and the composite transparent plate comprises 4 layers (such as Figure 3 As shown) and the stacking method is C / B / A / B.

[0048] Example 3: The first resin is Tairilin 390A, the second resin is Tairilin 3842, the third resin is Tairilin 3842, the intrinsic viscosity of the first resin is 0.9 dl / g, the intrinsic viscosity of the second resin is 0.84 dl / g, the intrinsic viscosity of the third resin is 0.84 dl / g, the thickness of the first layer accounts for 60%, the thickness of the second layer accounts for 30%, the thickness of the third layer accounts for 10%, the first molding wheel temperature is 18°C, the second molding wheel temperature is 18°C, the third molding wheel temperature is 55°C, and the composite transparent plate comprises 4 layers (such as Figure 4 As shown) and the stacking method is C / B / A / C.

[0049] Example 4: The first resin is Tairilin P115, the second resin is Tairilin 3842, the third resin is Tairilin 380R, the intrinsic viscosity of the first resin is 1.1 dl / g, the intrinsic viscosity of the second resin is 0.84 dl / g, the intrinsic viscosity of the third resin is 0.8 dl / g, the thickness of the first layer accounts for 60%, the thickness of the second layer accounts for 30%, the thickness of the third layer accounts for 10%, the first molding wheel temperature is 20°C, the second molding wheel temperature is 22°C, the third molding wheel temperature is 55°C, and the composite transparent plate comprises 3 layers (such as Figure 5 As shown) and the stacking method is C / B / A.

[0050] Example 5: The first resin is Tairilin 663G, the second resin is Tairilin 3842, the third resin is Tairilin 3842, the intrinsic viscosity of the first resin is 0.63dl / g, the intrinsic viscosity of the second resin is 0.84dl / g, the intrinsic viscosity of the third resin is 0.84dl / g, the thickness of the first layer accounts for 60%, the thickness of the second layer accounts for 30%, the thickness of the third layer accounts for 10%, the first molding wheel temperature is 20°C, the second molding wheel temperature is 20°C, the third molding wheel temperature is 53°C, and the composite transparent plate comprises 5 layers (such as Figure 6 as shown) and the stacking method is C / B / A / B / C.

[0051] Example 6: The first resin is S2008, the second resin is Tairilin 3842, the third resin is Tairilin 384R, the intrinsic viscosity of the first resin is 0.75 dl / g, the intrinsic viscosity of the second resin is 0.84 dl / g, the intrinsic viscosity of the third resin is 0.84 dl / g, the thickness of the first layer accounts for 60%, the thickness of the second layer accounts for 30%, the thickness of the third layer accounts for 10%, the temperature of the first molding wheel is 20°C, the temperature of the second molding wheel is 20°C, the temperature of the third molding wheel is 53°C, and the composite transparent plate comprises 5 layers (such as Figure 6 as shown) and the stacking method is C / B / A / B / C.

[0052] Comparative Example 1: The first resin is Tairilin 663G, the second resin and the third resin are not used, the characteristic viscosity of the first resin is 0.63dl / g, the thickness of the first layer is 100%, the first molding wheel temperature is 20°C, the second molding wheel temperature is 20°C, and the third molding wheel temperature is 53°C.

[0053] Comparative Example 2: The first resin is Tairilin3760, the second resin and the third resin are not used, the characteristic viscosity of the first resin is 0.76dl / g, the thickness of the first layer is 100%, the first molding wheel temperature is 18°C, the second molding wheel temperature is 18°C, and the third molding wheel temperature is 51°C.

[0054] The composition ratios and related parameters of the composite transparent plates of Examples 1 to 6 and Comparative Examples 1 to 2 are shown in Table 1, and the related test methods are described below.

[0055] Haze test: measured according to ISO 14782 method, haze value (Haze) = diffuse light transmittance / total light transmittance × 100%.

[0056] Light transmittance test: measured according to ISO 14782 method, light transmittance (Tt) = (outgoing light / incident light) × 100%.

[0057] [Table 1: Ratio of ingredients and physicochemical properties of the examples and comparative examples]

[0058]

[0059]

[0060]

[0061] [Test results discussion]

[0062] It can be seen from Examples 1 to 6 that, through specific materials and parameters, the composite transparent plate can have good molding conditions, a haze between 0.75% and 2.85%, and a light transmittance between 87.5% and 91.5%.

[0063] It can be seen from Example 5 and Comparative Example 1 that the composite transparent plate in Comparative Example 1 only includes a single first layer, and the first resin component is Tairilin 663G, which has a low intrinsic viscosity of 0.63 (dl / g) and poor molding. During molding, the resin drips and cannot be molded into a plate, or there are obvious bubbles. Example 5 can be processed into a composite transparent plate normally because it is coated with layers B and C of high intrinsic viscosity resin.

[0064] It can be seen from Example 1 and Comparative Example 2 that the composite transparent plate in Comparative Example 2 only includes a single first layer, and the first resin component is Tairilin 3760. When processed to a thickness of 4 mm, crystallization and whitening will occur, resulting in excessive haze and low light transmittance of the composite transparent plate, which does not meet the physical property requirements of the composite transparent plate. Example 1 is processed with a five-layer structure, the first resin component is Tairilin 3824, the second resin component is Tairilin 3760, and the third resin component is Tairilin 3760. It can be processed to a thickness of 6 mm without crystallization and whitening. The haze of the transparent composite plate is 2.85%, and the light transmittance is 88%, which meets the physical property requirements of the transparent composite plate.

[0065] [Beneficial effects of the embodiments of the present invention]

[0066] The beneficial effect of the present invention is that the composite transparent plate and the manufacturing method thereof provided by the present invention can be obtained by "the first resin is selected from Tairilin 3824, Tairilin 3842, Tairilin 390A, TairilinP115, Tairilin 663G and The technical solution of "the material group consisting of S2008, the second resin is selected from the material group consisting of Tairilin 3760 and Tairilin 3842, and the third resin is selected from the material group consisting of Tairilin3760, Tairilin 3842, Tairilin 380R and Tairilin 384R" is used to improve the problem of crystallization and whitening of the existing transparent plate during molding.

[0067] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the patent scope of the present invention.

Claims

1. A method for manufacturing a composite transparent plate, characterized in that: The manufacturing method of the composite transparent plate comprises: The feeding step is to feed the first resin, the second resin and the third resin into the first extruder, the second extruder and the third extruder respectively to form a composite transparent film including the first layer, the second layer and the third layer; wherein the first resin is selected from Tairilin3824, Tairilin 3842, Tairilin 390A, Tairilin P115, Tairilin663G and S2008, the second resin is selected from the material group consisting of Tairilin 3760 and Tairilin 3842, and the third resin is selected from the material group consisting of Tairilin 3760, Tairilin 3842, Tairilin 380R and Tairilin 384R; and a molding step, wherein the composite transparent film is sequentially passed through a first molding wheel, a second molding wheel, and a third molding wheel to be molded into a composite transparent plate; wherein the absolute value of the difference between the temperature of the first molding wheel and the temperature of the second molding wheel is not greater than 5° C., and the ratio of the temperature of the third molding wheel to the temperature of the first molding wheel or the temperature of the second molding wheel is between 1.8 and 3.5; The composite transparent plate has a haze ranging from 0.75% to 4% and a light transmittance ranging from 86% to 91.5%.

2. The method for manufacturing a composite transparent plate according to claim 1, characterized in that: The first resin has an intrinsic viscosity between 0.63 dl / g and 1.1 dl / g, the second resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g, and the third resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g.

3. The method for manufacturing a composite transparent plate according to claim 1, characterized in that: The temperature of the first molding wheel is between 18°C ​​and 25°C, the temperature of the second molding wheel is between 18°C ​​and 25°C, and the temperature of the third molding wheel is between 35°C and 58°C.

4. The method for manufacturing a composite transparent plate according to claim 1, characterized in that: The first layer, the second layer and the third layer in the composite transparent plate are arranged in the following manner: third layer / second layer / first layer / second layer / third layer, third layer / second layer / first layer / second layer, third layer / second layer / first layer / third layer, or third layer / second layer / first layer.

5. The method for manufacturing a composite transparent plate according to claim 1, characterized in that: Based on the thickness of the composite transparent plate being 100%, the thickness of the first layer accounts for 40% to 70%, the thickness of the second layer accounts for 15% to 40%, and the thickness of the third layer accounts for 10% to 20%.

6. The method for manufacturing a composite transparent plate according to claim 1, characterized in that: The melting point temperature of the first resin is less than 246°C or has no melting point temperature, the melting point temperature of the second resin is between 246°C and 255°C, and the melting point temperature of the third resin is between 246°C and 255°C.

7. The method for manufacturing a composite transparent plate according to claim 1, characterized in that: The thickness of the composite transparent plate is between 0.5 mm and 8 mm.

8. A composite transparent plate, characterized in that: The composite transparent plate comprises: The first layer is formed of a first resin, and the first resin is selected from Tairilin3824, Tairilin3842, Tairilin 390A, Tairilin P115, Tairilin663G and S2008 Material Groups; A second layer formed of a second resin, wherein the second resin is selected from the group consisting of Tairilin 3760 and Tairilin 3842; and The third layer is formed of a third resin, and the third resin is selected from the group consisting of Tairilin 3760, Tairilin 3842, Tairilin 380R and Tairilin 384R; The composite transparent plate has a haze ranging from 0.75% to 4% and a light transmittance ranging from 86% to 91.5%.

9. The composite transparent plate according to claim 8, characterized in that: The first resin has an intrinsic viscosity between 0.63 dl / g and 1.1 dl / g, the second resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g, and the third resin has an intrinsic viscosity between 0.76 dl / g and 1.1 dl / g.

10. The composite transparent plate according to claim 8, characterized in that: The first layer, the second layer and the third layer in the composite transparent plate are arranged in the following manner: third layer / second layer / first layer / second layer / third layer, third layer / second layer / first layer / second layer, third layer / second layer / first layer / third layer, or third layer / second layer / first layer.

11. The composite transparent plate according to claim 8, characterized in that: Based on the thickness of the composite transparent plate being 100%, the thickness of the first layer accounts for 40% to 70%, the thickness of the second layer accounts for 15% to 40%, and the thickness of the third layer accounts for 10% to 20%.

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