Polarization laminate, polarization bending laminate, lenses for glasses, and glasses

Abstract

To provide a polarization laminate which can precisely suppress or prevent generation of interlayer separation in an adhesive layer of a formed polarization bending laminate, a polarization bending laminate obtained by using the polarization laminate, and lenses for glasses and glasses which have the polarization bending laminate and have an excellent reliability.SOLUTION: A polarization laminate 15 of the present invention includes a polarization film 13, a first resin layer 11, a second resin layer 12, a first adhesive layer 16, and a second adhesive layer 17. In the first adhesive layer 16 and the second adhesive layer 17, the storage elastic modulus G' at the temperature of 130°C are in the range of 0.5 MPa to 15.0 MPa, both inclusive.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a polarizing laminate, a polarizing curved laminate, an eyeglass lens, and eyeglasses.

Background Art

[0002] There has been proposed an eyeglass lens including a polarizing curved laminate (resin substrate) configured by coating both surfaces of a polarizing film with a coating layer mainly made of a polycarbonate resin or a polyamide resin or the like via an adhesive layer.

[0003] For example, in this eyeglass lens, a polarizing laminate having a flat plate shape in plan view is punched into a predetermined shape such as a circular shape in plan view with protective films attached to both surfaces thereof. Then, the polarizing laminate is subjected to thermoforming under heating to obtain a polarizing curved laminate having a curved convex surface and a curved concave surface formed by thermoforming. After peeling off the protective film from the polarizing curved laminate, the polarizing curved laminate is adsorbed to a mold having a concave portion with a curved shape so that the concave portion of the mold and the convex portion of the polarizing curved laminate are in contact with each other, and a resin layer mainly made of a resin material such as a polycarbonate resin or a polyamide resin is formed on the concave surface of the polarizing curved laminate by using an insert injection molding method (see, for example, Patent Document 1).

[0004] In such a method for manufacturing an eyeglass lens, as described above, by subjecting the polarizing laminate to thermoforming under heating, a polarizing curved laminate having a curved shape with a curved convex surface and a curved concave surface can be obtained.

[0005] However, there has been a problem that delamination occurs in the adhesive layer provided in the polarizing curved laminate.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] An object of the present invention is to provide a polarizing laminate capable of accurately suppressing or preventing the occurrence of delamination in an adhesive layer provided in a formed polarizing curved laminate, a polarizing curved laminate obtained by using such a polarizing laminate, and a spectacle lens and spectacles excellent in reliability provided with such a polarizing curved laminate.

MEANS FOR SOLVING THE PROBLEMS

[0008] Such an object is achieved by the present invention described in the following (1) to (9). (1) A polarizing film, A first resin layer provided on one surface side of the polarizing film, a second resin layer provided on the other surface side of the polarizing film, A first adhesive layer and a second adhesive layer respectively provided between the polarizing film and the first resin layer and between the polarizing film and the second resin layer, a flat polarizing laminate, The first adhesive layer and the second adhesive layer each have a storage elastic modulus G'(130°C) at 130°C of 0.5 MPa or more and 15.0 MPa or less. A polarizing laminate characterized by that.

[0009] (2) The polarizing laminate according to (1) above, wherein the first adhesive layer and the second adhesive layer each have a storage elastic modulus G'(23°C) at 23°C of 3.0 MPa or more and 200.0 MPa or less.

[0010] (3) The relational expression of the ratio between the storage elastic modulus G'(130°C) at 130°C and the storage elastic modulus G'(23°C) at 23°C (storage elastic modulus G'(23°C) / G'(130°C)) satisfies the relationship of 1.2 ≦ storage elastic modulus G'(23°C) / G'(130°C) ≦ 25. The polarizing laminate according to (1) or (2) above.

[0011] (4) The first resin layer and the second resin layer have different retardations. The retardation of the first resin layer is 0 nm or more and 500 nm or less, and the retardation of the second resin layer is 2600 nm or more and 8000 nm or less. The polarizing laminate according to any one of (1) to (3) above.

[0012] (5) The first resin layer and the second resin layer are each independently composed mainly of a polycarbonate resin or a polyamide resin. The polarizing laminate according to any one of (1) to (4) above.

[0013] (6) The glass transition point of the main material is 100°C or more and 190°C or less. The polarizing laminate according to (5) above.

[0014] (7) The polarizing laminate according to any one of (1) to (6) above is in a curved state in which one surface side is a curved concave surface and the other surface side is a curved convex surface. A polarizing curved laminate characterized by this.

[0015] (8) An eyeglass lens characterized by comprising the polarizing curved laminate according to (7) above. (9) Eyeglasses characterized by comprising the eyeglass lens according to (8) above.

Advantages of the Invention

[0016] According to the present invention, a polarizing laminate in a flat plate shape includes a polarizing film, a first resin layer provided on one surface side of the polarizing film, a second resin layer provided on the other surface side of the polarizing film, a first adhesive layer and a second adhesive layer provided between the polarizing film and the first resin layer and between the polarizing film and the second resin layer, respectively. In the polarizing laminate, the first adhesive layer and the second adhesive layer are each set such that the storage elastic modulus G'(130°C) at 130°C is in the range of 0.5 MPa or more and 15.0 MPa or less. Therefore, when forming a polarizing curved laminate having a curved shape including a curved convex surface and a curved concave surface by thermoforming under heating on the polarizing laminate of the present invention, the occurrence of delamination between layers in the adhesive layer included in the formed polarizing curved laminate can be accurately suppressed or prevented.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0018] Hereinafter, the polarizing laminate, the polarizing curved laminate, the spectacle lens, and the spectacle of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

[0019] FIG. 1 is a perspective view showing an embodiment of sunglasses including a spectacle lens having a polarizing curved laminate of the present invention. In FIG. 1, when the sunglasses are worn on the user's head, the surface of the lens on the user's eye side is referred to as the back side surface, and the opposite surface is referred to as the front side surface. FIG. 2 is a schematic diagram for explaining a method of manufacturing a spectacle lens having a polarizing curved laminate of the present invention. In the following, for convenience of explanation, the upper side of FIG. 2 is referred to as "upper" and the lower side as "lower". FIG. 3 is a longitudinal sectional view showing an embodiment of the polarizing laminate of the present invention, and FIG. 4 is a longitudinal sectional view showing an embodiment of the polarizing curved laminate of the present invention. In the following, for convenience of explanation, the upper side of FIGS. 3 and 4 is referred to as "upper" and the lower side as "lower".

[0020] As shown in FIG. 3, the polarizing laminate 15 of the present invention includes a polarizing film 13, a first resin layer 11 provided on one surface side of the polarizing film 13, a second resin layer 12 provided on the other surface side of the polarizing film, and a first adhesive layer 16 and a second adhesive layer 17 provided between the polarizing film 13 and the first resin layer 11 and between the polarizing film 13 and the second resin layer 12, respectively, and is in a flat plate shape. The first adhesive layer 16 and the second adhesive layer 17 each satisfy that the storage elastic modulus G'(130°C) at 130°C is 0.5 MPa or more and 15.0 MPa or less.

[0021] Thereby, when forming the polarizing curved laminate 10 having a curved shape including a curved convex surface and a curved concave surface by thermo-bending processing under heating on the polarizing laminate 15, it is possible to accurately suppress or prevent the occurrence of delamination between layers. In other words, the polarizing laminate 15 can be made to have excellent thermo-bending processability.

[0022] The polarizing curved laminate 10 (the polarizing curved laminate of the present invention) having a curved convex surface and a curved concave surface, which is obtained by subjecting the polarizing laminate 15 (the polarizing laminate of the present invention) to thermo-bending processing under heating, is used, for example, as a polarizing resin substrate of the spectacle lens 30 provided in sunglasses 100 which is a kind of glasses. Therefore, hereinafter, first, prior to explaining the polarizing laminate 15 and the polarizing curved laminate 10 of the present invention, this sunglasses 100 (the glasses of the present invention) will be explained.

[0023] <Sunglasses> As shown in FIG. 1, the sunglasses 100 include a frame 20 and a spectacle lens 30.

[0024] In this specification, the “spectacle lens” shall include both those having a light condensing function and those not having a light condensing function.

[0025] The frame 20 is for being worn on the user's head and for arranging the spectacle lens 30 in the vicinity in front of the user's eyes.

[0026] This frame 20 has a rim portion 21, a bridge portion 22, a temple portion 23, and a nose pad portion 24.

[0027] The rim portion 21 has a ring shape and is provided one by one corresponding to the right eye and the left eye respectively, and the spectacle lens 30 is mounted inside. Thereby, the user can visually recognize external information through the spectacle lens 30.

[0028] Further, the bridge portion 22 has a rod shape and is located in front of the upper part of the user's nose when worn on the user's head, and connects a pair of rim portions 21.

[0029] The temple portion 23 has a vine shape and is connected to the edge portion on the opposite side of the position where the bridge portion 22 of each rim portion 21 is connected. This temple portion 23 is hung on the user's ear when worn on the user's head.

[0030] When the sunglasses 100 are worn on the user's head, the nose pad portion 24 is provided at the edge corresponding to the user's nose on each rim portion 21, abuts against the user's nose, and has a shape corresponding to the contact portion of the user's nose at this time. Thereby, the wearing state can be stably maintained.

[0031] The constituent material of each part constituting the frame 20 is not particularly limited, and for example, various metal materials, various resin materials, etc. can be used. Note that the shape of the frame 20 is not limited to the one shown as long as it can be worn on the user's head.

[0032] The spectacle lens 30 (the spectacle lens of the present invention) is mounted on each rim portion 21. This spectacle lens 30 is a member having light transmissibility and a plate shape curved outward, and has a resin layer 35 and a polarizing curved laminate 10.

[0033] The resin layer 35 has light transmissibility and is located on the back side of the lens. When imparting a light condensing function to the spectacle lens 30, this resin layer 35 has a light condensing function.

[0034] The constituent material of the spectacle lens 30 is not particularly limited as long as it is a resin material having light transmissibility. For example, various curable resins such as various thermoplastic resins, thermosetting resins, and photocurable resins can be mentioned, and one or more of these can be used in combination.

[0035] Examples of the resin material include polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymer; polyvinyl chloride; polystyrene; polyamide; polyimide; polycarbonate; poly-(4-methylpentene-1); ionomer; acrylic resin; polymethyl methacrylate; acrylonitrile-butadiene-styrene copolymer (ABS resin); acrylonitrile-styrene copolymer (AS resin); butadiene-styrene copolymer; polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT); polyethers; polyether ketone (PEK); polyether ether ketone (PEEK); polyether imide; polyacetal (POM); polyphenylene oxide; polysulfone; polyether sulfone; polyphenylene sulfide; polyarylate (liquid crystal polymer); polytetrafluoroethylene; polyvinylidene fluoride; other fluorine-based resins; epoxy resin; phenol resin; urea resin; melamine resin; silicone resin; polyurethane; or copolymers, blends, polymer alloys, etc. mainly composed of these. Among them, it is preferably the same type or identical to the resin material constituting the first resin layer 11 provided in the polarizable curved laminate 10 described later as the main material. Thereby, the adhesion between the resin layer 35 and the polarizable curved laminate 10 can be improved. In addition, since the refractive index difference between the resin layer 35 and the polarizable curved laminate 10 can be set low, it is possible to accurately suppress or prevent light from being reflected between the resin layer 35 and the polarizable curved laminate 10. Therefore, light can be transmitted between the resin layer 35 and the polarizable curved laminate 10 with excellent light transmittance. The refractive index difference between the resin layer 35 and the polarizable curved laminate 10 is preferably 0.2 or less, and more preferably 0.1 or less. Thereby, the effect obtained by setting the refractive index difference low can be more significantly exhibited.

[0036] The thickness of the resin layer 35 is not particularly limited, and for example, it is preferably 0.5 mm or more and 5.0 mm or less, and more preferably 1.0 mm or more and 3.0 mm or less. Thereby, it is possible to achieve both relatively high strength and weight reduction in the spectacle lens 30.

[0037] The polarizing curved laminate 10 is a curved resin substrate that is joined in a curved shape corresponding to such a shape on the outer surface of the resin layer 35, that is, on the convex curved surface. By providing the spectacle lens 30 with this polarizing curved laminate 10, the sunglasses 100 are imparted with polarization. As a result, the sunglasses 100 exhibit the function as polarized sunglasses having polarization. This polarizing curved laminate 10 is composed of the polarizing curved laminate of the present invention, and its detailed description will be given later.

[0038] As described above, the spectacle lens 30 included in the sunglasses 100 may be either one having a condensing function or one not having a condensing function.

[0039] In addition, as described above, the sunglasses 100 have the frame 20, but from the viewpoints of fashionability, light weight, etc., they may have a configuration without a frame.

[0040] Furthermore, in the present embodiment, the glasses of the present invention are applied to the sunglasses 100, but the present invention is not limited to this. The glasses of the present invention may be, for example, prescription glasses, novelty glasses, goggles for protecting the eyes from wind and rain, dust, chemicals, etc.

[0041] In the sunglasses 100 having the above-described configuration, the spectacle lens 30 included in the sunglasses 100 is manufactured in the present invention by undergoing the following method for manufacturing a spectacle lens 30.

[0042] <Method for manufacturing a spectacle lens> Hereinafter, each step of the method for manufacturing a spectacle lens 30 including the polarizing curved laminate 10 of the present invention will be described in detail.

[0043] [1] First, a polarizing laminate 15 (the polarizing laminate of the present invention) having a flat overall shape and comprising a first resin layer 11, a polarizing film 13, and a second resin layer 12 laminated in this order is prepared. Then, by attaching protective films 50 (masking tapes) to both surfaces of the polarizing laminate 15, a multilayer laminate 150 with the protective films 50 attached to both surfaces of the polarizing laminate 15 is obtained (see Fig. 2(a)).

[0044] [2] Next, as shown in Fig. 2(b), the prepared multilayer laminate 150, that is, the polarizing laminate 15 with the protective films 50 attached to both surfaces, is punched in the thickness direction so that the multilayer laminate 150 has a circular shape in plan view.

[0045] [3] Next, as shown in Fig. 2(c), the circular multilayer laminate 150 is subjected to thermoforming under heating so that the multilayer laminate 150 has a curved shape in which the first resin layer 11 side is a curved concave surface and the second resin layer 12 side is a curved convex surface. As a result, the flat polarizing laminate 15 can be made into a polarizing curved laminate 10 (the polarizing curved laminate of the present invention) having a curved shape with the protective films 50 attached to both surfaces.

[0046] This thermoforming is usually carried out by press molding or vacuum molding. The heating temperature (forming temperature) of the multilayer laminate 150 (polarizing laminate 15) at this time is, as described above, in this embodiment, considering that the polarizing laminate 15 has resin layers 11 and 12 and the melting or softening temperature of the resin layers 11 and 12, it is preferably set to about 110°C or higher and 170°C or lower, more preferably about 120°C or higher and 160°C or lower. By setting the heating temperature within this range, while preventing the deterioration of the polarizing laminate 15 (resin layers 11 and 12), the polarizing laminate 15 (resin layers 11 and 12) is softened or melted, and the polarizing laminate 15 can be surely thermoformed into a polarizing curved laminate 10 having a curved shape.

[0047] The curved convex surface of the polarizing curved laminate 10 is set corresponding to the curvature of the spectacle lens 30 to be formed, and is usually set to 1 curve or more and 9 curves or less. In terms of the radius of curvature, it is set to 58 mm or more and 523 mm or less. Note that the curvature of the curved convex surface of the polarizing curved laminate 10 may be the same or different in the magnitude in one direction and the magnitude in the orthogonal direction orthogonal to the one direction. Further, the mold 40 used in the next step [4] is set such that the curvature of the curved concave surface of the mold 40 is substantially the same as or slightly different from the curvature of the curved convex surface of the polarizing curved laminate 10 so as to adsorb the polarizing curved laminate 10.

[0048] [4] Next, the protective film 50 is peeled off from the thermally bent polarizing curved laminate 10. Then, as shown in Fig. 2(d), the polarizing curved laminate 10 is adsorbed in a state where the curved concave surface of the mold 40 and the curved convex surface of the polarizing curved laminate 10 are in contact with each other on the mold 40 having the curved concave surface formed in a curved shape. For example, using the insert injection molding method, a resin layer 35 mainly composed of a resin material is injection molded onto the curved concave surface of the polarizing curved laminate 10. That is, the constituent material of the resin layer 35 in a molten state is cooled and solidified in a state of being in contact with the curved concave surface of the polarizing curved laminate 10, so that the resin layer 35 is directly formed in contact with the curved concave surface of the polarizing curved laminate 10 without passing through an adhesive layer or the like. Thereby, the spectacle lens 30 (the spectacle lens of the present invention) including the thermally bent polarizing curved laminate 10 and the resin layer 35 is manufactured.

[0049] When injecting and molding this resin layer 35, the heating temperature (molding temperature) of the constituent material of the resin layer 35 to be in a molten state is appropriately set according to the type of the constituent material of the resin layer 35. However, when the constituent material of the resin layer 35 is the same type as or identical to the constituent material of the first resin layer 11 included in the polarizing curved laminate 10 described later, it is preferably set to about 110°C or higher and 170°C or lower, more preferably about 130°C or higher and 160°C or lower. By setting the heating temperature within such a range, the constituent material of the resin layer 35 in a molten state can be surely supplied to the curved concave surface of the polarizing curved laminate 10.

[0050] Also, among insert injection molding methods, an injection compression molding method is preferably used. The injection compression molding method takes a method of injecting a resin material for forming the resin layer 35 into the mold 40 at a low pressure and then closing the mold 40 at a high pressure to apply a compressive force to this resin material. Therefore, it is preferably used because it is difficult for the resin layer 35 as a molded body and thus the spectacle lens 30 to generate molding distortion and optical anisotropy caused by local orientation of resin molecules during molding. Further, by controlling the mold compressive force uniformly applied to the resin material, the resin material can be cooled at a constant specific volume, so that a resin layer 35 with high dimensional accuracy can be obtained.

[0051] In the manufacturing method of the spectacle lens 30 as described above, in the step [3], a polarizing curved laminate 10 having a curved shape including a curved convex surface and a curved concave surface can be obtained by thermally bending the polarizing laminate 15 under heating. By using the polarizing laminate of the present invention as the polarizing laminate 15 subjected to the thermal bending process under heating as described above, delamination between the adhesive layers 16 and 17 included in the polarizing curved laminate 10 can be accurately suppressed or prevented. Therefore, a spectacle lens 30 and thus a sunglasses 100 with excellent reliability can be manufactured with a good yield. Hereinafter, the polarizing laminate 15 of the present invention will be described in detail.

[0052] <Polarizing laminate 15> As shown in Fig. 3, the polarizing laminate 15 of the present invention includes a polarizing film 13, a first resin layer 11 provided on one surface side of the polarizing film 13, a second resin layer 12 provided on the other surface side of the polarizing film 13, a first adhesive layer 16 and a second adhesive layer 17 provided between the polarizing film 13 and the first resin layer 11 and between the polarizing film 13 and the second resin layer 12, respectively, and has a flat plate shape. That is, the polarizing laminate 15 is composed of a laminate in which the first resin layer 11, the first adhesive layer 16, the polarizing film 13, the second adhesive layer 17, and the second resin layer 12 are laminated in this order, and the overall shape thereof is flat plate-shaped.

[0053] By subjecting the polarizing laminate 15 to thermoforming in the step [3], as shown in Fig. 4, a polarizing curved laminate 10 can be obtained in which the surface on the first resin layer 11 side (one surface side) forms a curved concave surface and the surface on the second resin layer 12 side (the other surface side) forms a curved convex surface. In such a polarizing laminate 15, in the present invention, the storage elastic modulus G'(130°C) of the first adhesive layer 16 and the second adhesive layer 17 at 130°C is set within the range of 0.5 MPa or more and 15.0 MPa or less, respectively.

[0054] Hereinafter, the polarizing laminate 15 (the polarizing curved laminate of the present invention) used to obtain the polarizing curved laminate 10 will be described with respect to each part (each layer) constituting the polarizing laminate 15.

[0055] (Polarizing film 13) The polarizing film 13 has a function of extracting linearly polarized light having a polarization plane in a predetermined direction from incident light (non-polarized natural light). As a result, the light passing through the polarizing laminate 15 becomes polarized.

[0056] The degree of polarization of the polarizing film 13 is not particularly limited, but for example, it is preferably 50% or more and 100% or less, and more preferably 80% or more and 100% or less. The visible light transmittance of the polarizing film 13 is not particularly limited, but for example, it is preferably 10% or more and 80% or less, and more preferably 20% or more and 50% or less.

[0057] As the constituent material of such a polarizing film 13, there is no particular limitation as long as it has the above functions. For example, a polymer film composed of polyvinyl alcohol (PVA), partially formalized polyvinyl alcohol, polyethylene vinyl alcohol, polyvinyl butyral, polycarbonate, ethylene-vinyl acetate copolymer partial saponified product, etc., adsorbed and dyed with dichroic substances such as iodine and dichroic dyes, and uniaxially stretched, a polyene-based oriented film such as a dehydrated product of polyvinyl alcohol or a dehydrochlorinated product of polyvinyl chloride, etc. may be mentioned.

[0058] Among these, the polarizing film 13 is preferably a polymer film mainly made of polyvinyl alcohol (PVA), adsorbed and dyed with iodine or a dichroic dye, and uniaxially stretched. Polyvinyl alcohol (PVA) is a material excellent in transparency, heat resistance, affinity with iodine or dichroic dyes as a dyeing agent, and orientation during stretching. Therefore, the polarizing film 13 mainly made of PVA has excellent heat resistance and excellent polarization ability.

[0059] In this specification, the "main material" means a constituent material contained in an amount of 50% by weight or more among the constituent materials constituting the layer (film) containing this material.

[0060] Examples of the dichroic dye include chloratin fast red, congo red, brilliant blue 6B, benzopurpurin, chlorazol black BH, direct blue 2B, diamine green, chrysophenone, sirius yellow, direct fast red, acid black, etc.

[0061] The thickness of this polarizing film 13 is not particularly limited. For example, it is preferably 5 μm or more and 60 μm or less, and more preferably 10 μm or more and 40 μm or less.

[0062] Further, the refractive index of the polarizing film 13 is not particularly limited, but for example, it is preferably 1.45 or more and 1.55 or less, and more preferably 1.47 or more and 1.53 or less.

[0063] (First resin layer 11 and second resin layer 12) As shown in FIGS. 2(d), 3, and 4, the first resin layer 11 and the second resin layer 12 are provided on the lower surface side (one surface side) and the upper surface side (the other surface side) of the polarizing film 13, respectively, and thereby function as protective layers for protecting the polarizing film 13.

[0064] These first resin layer 11 and second resin layer 12 are not particularly limited, but for example, are composed mainly of resin materials such as polyamide-based resins, polycarbonate-based resins, and cellulose resins such as triacetyl cellulose, and one or two or more of these can be used in combination. Among them, it is preferable that they are composed mainly of a polyamide-based resin or a polycarbonate-based resin.

[0065] Since polycarbonate-based resins are rich in mechanical strengths such as transparency (light transmittance) and rigidity, the transparency and impact resistance of the polarizing laminate 15 can be improved. In addition, since polycarbonate-based resins have a specific gravity of about 1.2 and are classified as light among resin materials, the weight of the polarizing laminate 15 can be reduced. Further, in addition to transparency and impact resistance, polyamide-based resins can improve chemical resistance, stress resistance, etc.

[0066] The polyamide-based resin is not particularly limited, and various types can be used. For example, alicyclic polyamides, semi-aromatic polyamides, etc. can be mentioned. Alicyclic polyamides are materials with excellent impact resistance. Therefore, the polarizing laminate 15 can be made to exhibit excellent impact resistance. Further, semi-aromatic polyamides are materials with a high elastic modulus. Therefore, the polarizing laminate 15 can be made to have excellent resistance to stresses such as bending.

[0067] In this specification, the semi-aromatic polyamide refers to a polyamide in which one of the dicarboxylic acid and diamine monomers constituting the polyamide is an aromatic compound and the other is an aliphatic compound, and specifically, it can be represented by the following formula (1B).

[0068] [Chemical formula] (However, in formula (1B), R 1 and R 2 are such that one is a divalent aromatic substituent and the other is a divalent aliphatic substituent, and n is an integer of 2 or more.)

[0069] Note that the polyamide may be a copolymer (random copolymer, block copolymer, etc.) containing two or more monomers for at least one of the dicarboxylic acid and diamine.

[0070] Also, among R 1 and R 2 in the above formula (1B), the aromatic substituent is preferably one represented by the following formula (2B).

[0071] [Chemical formula] (However, in formula (2B), l and m are each independently an integer of 0 or more and 2 or less.)

[0072] Thereby, the polarizing film 13 can be more suitably protected, and the processability of the polarizing laminate 15 can be made more excellent. Further, when retardation is imparted to the resin layers 11 and 12, the control of retardation by stretching of the resin layers 11 and 12 can be more easily performed.

[0073] Among R 1 and R 2Among them, the aliphatic substituent preferably has 4 to 18 carbon atoms, more preferably is a hydrocarbon group having 4 to 18 carbon atoms, and still more preferably is a saturated hydrocarbon group having 4 to 18 carbon atoms. Thereby, the processability of the polarizing laminate 15 can be made more excellent.

[0074] Furthermore, the semi-aromatic polyamide preferably contains an aromatic dicarboxylic acid and an aliphatic diamine as constituent monomers. Thereby, the polarizing film 13 can be more suitably protected, and the processability of the polarizing laminate 15 can be made more excellent. In addition, the control of retardation by stretching can be performed more easily.

[0075] The alicyclic polyamide has an alicyclic chemical structure in its molecule, which may be in the main chain structure or in the side chain structure.

[0076] Examples of this alicyclic polyamide include compounds in which at least one of the dicarboxylic acid and diamine as monomers constituting the polyamide has an alicyclic chemical structure. Specifically, for example, it can be represented by the following formula (3B).

[0077] [Chemical formula] (However, in formula (3B), R 3 , R 4 are each independently a hydrogen atom or a hydrocarbon group having 4 or fewer carbon atoms, o is an integer of 2 or more and 14 or less, p is an integer of 0 or more and 6 or less, and n is an integer of 2 or more.)

[0078] The polycarbonate resin is not particularly limited, and various ones can be used. Among them, an aromatic polycarbonate resin is preferable. The aromatic polycarbonate resin has an aromatic ring in its main chain, and thereby, the strength of the polarizing laminate 15 can be made more excellent.

[0079] This aromatic polycarbonate resin is synthesized, for example, by an interfacial polycondensation reaction between bisphenol and phosgene, a transesterification reaction between bisphenol and diphenyl carbonate, or the like.

[0080] Examples of bisphenol include bisphenol A and bisphenol (modified bisphenol) that is the origin of the repeating unit of the polycarbonate represented by the following formula (1A).

[0081] [Chemical formula] (In formula (1A), X is an alkyl group having 1 to 18 carbon atoms, an aromatic group, or a cycloaliphatic group; Ra and Rb are each independently an alkyl group having 1 to 12 carbon atoms; m and n are each an integer of 0 to 4; and p is the number of repeating units.)

[0082] Specific examples of the bisphenol that is the origin of the repeating unit of the polycarbonate represented by the formula (1A) include 4,4'-(pentane-2,2-diyl)diphenol, 4,4'-(pentane-3,3-diyl)diphenol, 4,4'-(butane-2,2-diyl)diphenol, 1,1'-(cyclohexanediyl)diphenol, 2-cyclohexyl-1,4-bis(4-hydroxyphenyl)benzene, 2,3-biscyclohexyl-1,4-bis(4-hydroxyphenyl)benzene, 1,1'-bis(4-hydroxy-3-methylphenyl)cyclohexane, 2,2'-bis(4-hydroxy-3-methylphenyl)propane, etc. One or more of these can be used in combination.

[0083] In particular, as the polycarbonate resin, it is preferable to use a bisphenol-type polycarbonate resin having a skeleton derived from bisphenol as the main component. By using such a bisphenol-type polycarbonate resin, the polarizing laminate 15 exhibits even better strength.

[0084] The glass transition temperature (Tg) of the resin material contained as the main material in the first resin layer 11 and the second resin layer 12 is preferably 100°C or higher and 190°C or lower, and more preferably 120°C or higher and 165°C or lower. Thereby, when thermally bending the polarizing laminate 15 in the step [3], by setting the heating temperature for heating the polarizing laminate 15 to preferably about 110°C or higher and 170°C or lower, while reliably preventing the resin layers 11 and 12 from being altered or deteriorated, the resin layers 11 and 12 can be surely softened or melted. Therefore, the polarizing curved laminate 10 can be surely formed by thermally bending the polarizing laminate 15. Further, when causing the first resin layer 11 and the second resin layer 12 to exhibit retardation, stretching for the manifestation of this retardation can be suitably performed. Furthermore, the durability and reliability of the polarizing laminate 15 can be made excellent.

[0085] In addition, the first resin layer 11 and the second resin layer 12 may contain other components in addition to the resin material contained as the main material. Such components are not particularly limited, and examples include resin materials other than the main material, colorants such as dyes, fillers, alignment aids, stabilizers (such as heat stabilizers, ultraviolet absorbers, and antioxidants), plasticizers, colorants, flame retardants, antistatic agents, and viscosity modifiers.

[0086] In this case, the content of the resin material in the first resin layer 11 or the second resin layer 12 is not particularly limited, but is preferably 75 parts by mass or more, and more preferably 85 parts by mass or more, per 100 parts by mass of the first resin layer 11 or the second resin layer 12. By setting the content of the resin material within the above range, the polarizing laminate 15 can exhibit excellent strength.

[0087] Note that the constituent materials constituting the first resin layer 11 and the second resin layer 12 may be the same or different from each other.

[0088] Furthermore, when imparting retardation to the first resin layer 11 and the second resin layer 12, the retardation of the first resin layer 11 and the retardation of the second resin layer 12 are preferably different, and more preferably, the retardation of the first resin layer 11 is lower than the retardation of the second resin layer 12.

[0089] As a result, the second resin layer 12 is likely to deform in a direction in which the bending curvature decreases due to thermal shrinkage, while the first resin layer 11 can be made less likely to deform due to thermal shrinkage. Therefore, as shown in FIGS. 2 and 4, by applying to the polarizing curved laminate 10 provided in the spectacle lens 30, it will be used in a curved state, and at this time, as in the present embodiment, it is preferable that the second resin layer 12 is located on the curved convex surface side and the first resin layer 11 is located on the curved concave surface side. In this case, since the second resin layer 12 has a relatively high thermal shrinkage rate, it is relatively easily thermally deformed. However, in the polarizing curved laminate 10, the first resin layer 11 exhibits a function of suppressing the thermal deformation of the second resin layer 12. Therefore, as a whole, the polarizing curved laminate 10 can prevent excessive deformation due to heat. As a result, it is possible to accurately suppress or prevent the shape of the spectacle lens 30 itself from being deformed due to the thermal deformation of the polarizing curved laminate 10.

[0090] The retardation of the first resin layer 11 is preferably 0 nm or more and 500 nm or less, and more preferably 50 nm or more and 350 nm or less. The retardation of the second resin layer 12 is preferably 2600 nm or more and 8000 nm or less, and more preferably 3500 nm or more and 6500 nm or less. As a result, the retardation of the first resin layer 11 can be made sufficiently low, and the retardation of the second resin layer 12 can be made sufficiently high. Therefore, the effect obtained by making the retardation of the first resin layer 11 lower than the retardation of the second resin layer 12 can be more significantly exhibited. In addition, the polarization performance of the polarizing curved laminate 10 can be sufficiently enhanced.

[0091] Incidentally, the difference in retardation between the first resin layer 11 and the second resin layer 12 can be manifested by varying the constituent materials contained in the layers, the thickness, and further, the stretching ratio along one direction of the first resin layer 11 and the second resin layer 12, etc.

[0092] The stretching ratio along one direction of the first resin layer 11 is not particularly limited, but is preferably, for example, 0.95 or more and 1.1 or less so as to be set to the magnitude of the retardation. The stretching ratio along one direction of the second resin layer 12 is not particularly limited, but is preferably 1.5 or more and 3.5 or less so as to be set to the magnitude of the retardation.

[0093] Also, the stretching directions of the first resin layer 11, the second resin layer 12, and the polarizing film 13, that is, the one direction, preferably coincide. Thereby, the polarizing performance of the polarizing curved laminate 10 can be further enhanced.

[0094] Also, the refractive indices of the first resin layer 11 and the second resin layer 12 are not particularly limited, but are preferably, for example, 1.45 or more and 1.66 or less, and preferably 1.48 or more and 1.60 or less.

[0095] (First adhesive layer 16 and second adhesive layer 17) The first adhesive layer 16 and the second adhesive layer 17 each have a function of joining these by intervening between the polarizing film 13 and the first resin layer 11 and between the polarizing film 13 and the second resin layer 12.

[0096] In the present invention, these first adhesive layer 16 and second adhesive layer 17 each satisfy that the storage elastic modulus G'(130°C) at 130°C is 0.5 MPa or more and 15.0 MPa or less.

[0097] Here, in the above-described step [3], when obtaining the polarizing curved laminate 10 having a curved shape including a curved convex surface and a curved concave surface by thermo-bending the polarizing laminate 15 under heating, as described above, there was a problem that delamination occurred in the adhesive layers 16 and 17 provided in the polarizing curved laminate 10.

[0098] In the above-described step [3], when thermo-bending the polarizing laminate 15, in consideration of the melting or softening temperature of the resin layers 11 and 12 provided in the polarizing laminate 15, the polarizing laminate 15 is preferably heated at a heating temperature of about 110°C or higher and 170°C or lower, more preferably about 120°C or higher and 160°C or lower. When thermo-bending the polarizing laminate 15 in a state of being heated at a heating temperature within such a temperature range, the above-described problem occurs in the obtained polarizing curved laminate 10. However, as a result of investigations by the present inventors, it has been found that such a problem is closely related to the magnitude of the storage elastic modulus G' of the adhesive layers 16 and 17 during heating.

[0099] That is, when the storage elastic modulus G' of the adhesive layers 16 and 17 during heating is too high, in other words, when the hardness of the adhesive layers 16 and 17 during heating is too hard, delamination occurs in the adhesive layers 16 and 17 due to the hardness of these resin layers 11 and 12 during the thermo-bending of the polarizing laminate 15.

[0100] Then, as a result of further investigations by the present inventors, it has been found that by setting the hardness of the adhesive layers 16 and 17 during heating within an appropriate range, specifically, by setting the storage elastic modulus G'(130°C) of the adhesive layers 16 and 17 at 130°C within the range of 0.5 MPa or higher and 15.0 MPa or lower, the above-described problem can be solved, and the present invention has been completed. That is, by setting the storage elastic modulus G'(130°C) within the above range, it has been found that delamination in the adhesive layers 16 and 17 provided in the formed polarizing curved laminate 10 can be accurately suppressed or prevented. In other words, it has been found that the polarizing laminate 15 can be made to have excellent thermo-bending processability, and the present invention has been completed.

[0101] In the step [4], when the resin layer 35 is formed by supplying the constituent material of the resin layer 35 in a molten state to the curved concave surface of the polarizing curved laminate 10 using an insert injection molding method or the like, when the constituent material of the resin layer 35 is the same as or of the same kind as the constituent material of the first resin layer 11, the constituent material of the resin layer 35 is preferably heated at a heating temperature of about 110°C or higher and 170°C or lower, more preferably about 130°C or higher and 160°C or lower. Therefore, the polarizing curved laminate 10 is also heated within such a temperature range. On the other hand, in the present invention, as described above, since the storage elastic modulus G'(130°C) is set within the range of 0.5 MPa or more and 15.0 MPa or less, the unintended melting of the adhesive layers 16 and 17 is surely suppressed or prevented with this heating. Therefore, it is possible to surely suppress or prevent the melted adhesive layers 16 and 17 from leaking from the end portions on the side surface side of the polarizing curved laminate 10.

[0102] Such adhesive layers 16 and 17 are composed of an adhesive having a storage elastic modulus G'(130°C) set within the above range and having light transmissivity. The adhesive is not particularly limited, and examples thereof include silicone-based, epoxy-based, acrylic-based, urethane-based, polyolefin-based, chlorinated polyolefin-based, cyanoacrylate-based, rubber-based, polyester-based, polyimide-based, and phenol-based adhesives. One or more of these can be used in combination, and among them, silicone-based, epoxy-based, acrylic-based, and urethane-based adhesives are preferred. If the adhesive is a silicone-based, epoxy-based, acrylic-based, or urethane-based adhesive, the storage elastic modulus G'(130°C) can be relatively easily set within the above range.

[0103] The adhesive may be any of a one-component moisture-curing type, a one-component latent curing agent type, and a two-component curing type, but a two-component curing type is preferred. If it is a two-component curing type adhesive, the storage elastic modulus G'(130°C) can be relatively easily set within the above range by appropriately selecting the combination of the two components.

[0104] Here, the storage modulus G'(130°C) of the adhesive layers 16 and 17 only needs to be set within the range of 0.5 MPa or more and 15.0 MPa or less, preferably within the range of 1.0 MPa or more and 12.5 MPa or less, and more preferably within the range of 2.0 MPa or more and 10.0 MPa or less. By doing so, the effects obtained by setting the magnitude of the storage modulus G'(130°C) can be more significantly exerted.

[0105] Note that the storage modulus G'(130°C) of the adhesive layers 16 and 17 can be obtained by preparing adhesive layers 16 and 17 with a width of 4 mm and a length of 20 mm in accordance with JIS K7244-4 and measuring them using a dynamic viscoelasticity measuring device (manufactured by SII NanoTechnology Inc., "DMS6100") in the tensile mode, at a frequency of 1 Hz, and a heating rate of 5°C / min.

[0106] Also, the storage modulus G'(23°C) of the adhesive layers 16 and 17 is preferably 3.0 MPa or more and 200.0 MPa or less, and more preferably 10.0 MPa or more and 150.0 MPa or less. By setting the storage modulus G'(23°C) of the adhesive layers 16 and 17 within the above range at 23°C (room temperature), that is, the temperature during the use of the sunglasses 100, for example, when laminating the polarizing laminate 15 with other members for transportation or the like, even when a load is applied with foreign matter being bitten in, an effect of preventing the traces of the foreign matter from being transferred to the polarizing laminate 15 can be obtained.

[0107] Furthermore, the relational expression of the ratio between the storage modulus G'(130°C) at 130°C and the storage modulus G'(23°C) at 23°C (storage modulus G'(23°C) / G'(130°C)) preferably satisfies the relationship of 1.2 ≤ storage modulus G'(23°C) / G'(130°C) ≤ 25, and more preferably satisfies the relationship of 35 ≤ storage modulus G'(23°C) / G'(130°C) ≤ 20. By doing so, the effects obtained by setting the storage modulus G'(130°C) and the storage modulus G'(23°C) respectively can be more significantly exerted.

[0108] The adhesive layers 16 and 17 having the above-mentioned storage elastic modulus G'(130°C) and the storage elastic modulus G'(23°C) can be obtained, for example, by appropriately setting the type of adhesive contained in the adhesive layers 16 and 17, the average thickness of the adhesive layers 16 and 17, and the like.

[0109] The thickness of the adhesive layers 16 and 17 is not particularly limited. For example, it is preferably 5 μm or more and 60 μm or less, and more preferably 10 μm or more and 40 μm or less. Thereby, the function as the adhesive layers 16 and 17 can be surely imparted.

[0110] Also, the refractive index of the adhesive layers 16 and 17 is not particularly limited. For example, it is preferably 1.45 or more and 1.55 or less, and more preferably 1.47 or more and 1.53 or less.

[0111] Note that the constituent materials constituting the first adhesive layer 16 and the second adhesive layer 17 may be the same or different from each other.

[0112] Also, the storage elastic modulus G'(130°C) in the first adhesive layer 16 and the second adhesive layer 17 may be the same or different from each other as long as it is in the range of 0.5 MPa or more and 15.0 MPa or less.

[0113] Furthermore, the polarizing laminate 15 having such a configuration preferably has a total thickness of 0.1 mm or more and 2 mm or less.

[0114] The polarizing laminate 15 having the above-mentioned configuration of each part (each layer) can be obtained, for example, by bonding the first resin layer 11 and the second resin layer 12 to the polarizing film 13 via the first adhesive layer 16 and the second adhesive layer 17, respectively.

[0115] The polarizing laminate, polarizing curved laminate, spectacle lens, and spectacle of the present invention have been described above. However, the present invention is not limited thereto. Further, the uses of the polarizing laminate and polarizing curved laminate of the present invention are not limited to the use as a lens provided in eyewear such as spectacles and sunglasses described above. For example, as other uses, a light-transmitting cover member of a head-up display device can be mentioned. This light-transmitting cover member is used, for example, by being attached to the housing of a head-up display device.

[0116] Further, each part constituting the polarizing laminate and polarizing curved laminate of the present invention can be replaced with any configuration that can exhibit the same function.

[0117] Further, the polarizing laminate and polarizing curved laminate of the present invention may have an arbitrary component added thereto in addition to the above-described configuration.

[0118] More specifically, for example, the polarizing curved laminate of the present invention may include an intermediate layer, a diopter adjustment layer for adjusting the diopter as a lens, and the like.

Example

[0119] Hereinafter, the present invention will be described in detail based on examples, but the present invention is not limited thereto.

[0120] 1. Manufacture of polarizing curved laminate (Example 1) First, a polyvinyl alcohol-based film was stretched in an aqueous solution in which a dye was dissolved while being stretched in a water tank, and then treated with boric acid. Thereafter, the treated polyvinyl alcohol-based film was washed with water and dried. As a result, a polarizing film 13 having a thickness of 35 μm was obtained.

[0121] On the other hand, a polyamide-based resin (alicyclic polyamide, manufactured by EMS, "Grilamid TR90") was used as a resin material, and a sheet-like first resin layer 11 having a thickness of 0.2 mm and a retardation of 100 nm was obtained by extrusion molding using a vent-type single-screw extruder.

[0122] Also, a polyamide resin (alicyclic polyamide, manufactured by EMS, "Grilamid TR90") was used as the resin material, and a first sheet with a thickness of 0.5 mm was obtained by extrusion molding using a vent type single screw extruder. While heating the first sheet to 120°C, it was uniaxially stretched to twice its original size to obtain a sheet-like second resin layer 12 with a thickness of 0.4 mm and a retardation of 2600 nm.

[0123] Next, on one surface of the first resin layer 11, a two-component curable polyurethane adhesive (main agent: manufactured by Mitsui Chemicals, "Takelac A-1143", curing agent: manufactured by Mitsui Chemicals, "Takenate A-50") was applied as the first adhesive using a bar coater so that the dried thickness would be 20 μm. Also, on one surface of the second resin layer 12, a two-component curable polyurethane adhesive (main agent: manufactured by Mitsui Chemicals, "Takelac A-1143", curing agent: manufactured by Mitsui Chemicals, "Takenate A-50") was applied as the second adhesive using a bar coater so that the dried thickness would be 20 μm.

[0124] Next, the first resin layer 11 and the second resin layer 12, on which the first adhesive and the second adhesive were respectively applied, were placed in an oven and heated until the solvent components in the first adhesive and the second adhesive were dried. As a result, a first laminate in which a first adhesive layer 16 was laminated on one surface of the first resin layer 11 was obtained, and a second laminate in which a second adhesive layer 17 was laminated on one surface of the second resin layer 12 was obtained.

[0125] Note that the storage elastic modulus G'(130°C) and the storage elastic modulus G'(23°C) of the adhesive layers 16 and 17 at 130°C were 0.9 MPa and 14.3 MPa, respectively. These values were measured in accordance with JIS K7244-4 by preparing adhesive layers 16 and 17 with a width of 4 mm and a length of 20 mm and using a dynamic viscoelasticity measuring device (manufactured by SII NanoTechnology Inc., "DMS6100"). The measurement conditions were tensile mode, frequency 1 Hz, and heating rate 5°C / min.

[0126] Thereafter, the first laminate was laminated on one surface of the polarizing film 13 so that the first adhesive layer 16 was in contact therewith, and the second laminate was laminated on the other surface of the polarizing film 13 so that the second adhesive layer 17 was in contact therewith, thereby obtaining the polarizing laminate 15 of Example 1. At this time, using the rubber roll of the laminator, the first laminate, the polarizing film 13, and the second laminate were respectively pressure-bonded to make the total thickness of the polarizing laminate 15 0.75 mm.

[0127] Then, protective films 50 made of polyolefin were laminated on both sides of such a polarizing laminate 15, that is, on the surface of the first resin layer 11 opposite to the polarizing film 13 and on the surface of the second resin layer 12 opposite to the polarizing film 13, respectively, by a lamination method.

[0128] Next, after punching out this polarizing laminate 15 into a diameter of 8 cm, using a remolding machine (vacuum forming machine) (CR-32 type), heat bending was performed at 150 °C for 10 minutes while sucking, thereby obtaining the polarized curved laminate 10 of Example 1.

[0129] (Examples 2 to 4, Comparative Example 1) Except that the first adhesive and the second adhesive were changed as shown in Table 1, the polarized curved laminates 10 of Examples 2 to 4 and Comparative Example 1 were obtained in the same manner as in Example 1 above. The adhesives used are as follows.

[0130] Two-component curable polyurethane adhesive (main agent: manufactured by Mitsui Chemicals, "Takelac A-1143", curing agent: "Takenate A-10") Two-component curable polyurethane adhesive (main agent: manufactured by Mitsui Chemicals, "Takelac A-969V", curing agent: "Takenate A-50")

[0131] 2. Evaluation For the polarizing laminates 15 or polarized curved laminates 10 of each example and comparative example, the following evaluations were respectively performed.

[0132] (Indentation markability at room temperature) For the polarizing laminate 15 of each example and comparative example, the indentation traceability at room temperature was evaluated by the following method.

[0133] First, a cushioning paper, the polarizing laminate 15, and a polycarbonate plate with a size of 20 mm square and a thickness of 2 mm were stacked in this order to prepare a test specimen. Next, the obtained test specimen was set in a press machine, and a press test was performed at pressures of 1 MPa and 5 MPa for 30 seconds each. Next, the surface of the polarizing laminate 15 after the test (the contact surface with the polycarbonate plate) was visually observed. Then, the indentation traceability at room temperature was evaluated with reference to the following evaluation criteria.

[0134] ◎: No trace even when pressed at 5 MPa ○: No trace even when pressed at 1 MPa ×: Traces are left when pressed at 1 MPa

[0135] (Thermoforming property) For the polarizing curved laminate 10 of each example and comparative example, the ratio of the delamination area per unit area of the polarizing curved laminate 10 was calculated by visual observation. Then, the thermoforming property of the polarizing curved laminate 10 was evaluated with reference to the following evaluation criteria.

[0136] ◎: The ratio of the delamination area is 0% (no delamination) ○: The ratio of the delamination area is more than 0% and 5% or less ×: The ratio of the delamination area is more than 5%

[0137] (End melting during injection) After adsorbing the polarizing curved laminate 10 of each example onto the mold 40 having a curved concave surface, using the insert injection molding method, a resin layer 35 made of a polyamide-based resin (alicyclic polyamide, manufactured by EMS, "Grilamid TR90") was injection molded onto the curved concave surface of the polarizing curved laminate 10 under the condition of 150°C. As a result, an eyeglass lens 30 including the polarizing curved laminate 10 and the resin layer 35 made of alicyclic polyamide was obtained. Then, the presence or absence of the melted adhesive layers 16 and 17 at the end of the polarizing curved laminate 10, that is, the presence or absence of end melting during injection, was visually observed. And the end melting during injection was evaluated according to the following evaluation criteria with reference to the observation results.

[0138] ◎: No end melting was confirmed. ○: End melting was confirmed, but it was at a level with no practical problems. ×: End melting occurred, resulting in a defect in appearance.

[0139]

Table 1

[0140] As shown in Table 1, by setting the storage elastic modulus G'(130°C) of the first adhesive layer and the second adhesive layer at 130°C in the range of 0.5 MPa or more and 15.0 MPa or less respectively, the results showed that the occurrence of peeling after thermoforming and appearance defects due to end melting during injection could be suppressed.

[0141] On the other hand, in the comparative example, since the storage elastic modulus G'(130°C) of the first adhesive layer and the second adhesive layer at 130°C was set at 15.0 MPa or more respectively, peeling occurred after thermoforming, resulting in a situation where good products could not be obtained.

Explanation of reference numerals

[0142] 10 Polarizing curved laminate 11 First resin layer 12 Second resin layer 13 Polarizing film 15 Polarized laminate 16 First adhesive layer 17 Second adhesive layer 20 Frame 21 Rim portion 22 Bridge portion 23 Temple portion 24 Nose pad portion 30 Eyeglass lens 35 Resin layer 40 Mold 50 Protective film 100 Sunglasses 150 Multilayer laminate 200 Curved multilayer laminate

Claims

1. A polarizing film, a first resin layer provided on one surface side of the polarizing film, and a second resin layer provided on the other surface side of the polarizing film, a first adhesive layer and a second adhesive layer respectively provided between the polarizing film and the first resin layer, and between the polarizing film and the second resin layer, a flat polarizing laminate, wherein the first adhesive layer and the second adhesive layer each have a storage elastic modulus G'(130°C) at 130°C of 0.5 MPa or more and 15.0 MPa or less. A polarizing laminate characterized by this.

2. The polarizing laminate according to claim 1, wherein the first adhesive layer and the second adhesive layer each have a storage elastic modulus G'(23°C) at 23°C of 3.0 MPa or more and 200.0 MPa or less.

3. The polarizing laminate according to claim 1 or 2, wherein the relational expression (storage elastic modulus G'(23°C) / (130°C)) of the ratio between the storage elastic modulus G'(130°C) at 130°C and the storage elastic modulus G'(23°C) at 23°C satisfies the relationship 1.2 ≤ storage elastic modulus G'(23°C) / (130°C) ≤ 25.

4. The first resin layer and the second resin layer have different retardations, the retardation of the first resin layer is 0 nm or more and 500 nm or less, and the retardation of the second resin layer is 2600 nm or more and 8000 nm or less. The polarizing laminate according to claim 1 or 2.

5. The polarizing laminate according to claim 1 or 2, wherein the first resin layer and the second resin layer are each independently composed mainly of a polycarbonate resin or a polyamide resin.

6. The polarizing laminate according to claim 5, wherein the glass transition point of the main material is 100°C or more and 190°C or less.

7. A polarizing curved laminate, characterized in that the polarizing laminate according to claim 1 or 2 is in a curved state with the one surface side as a curved concave surface and the other surface side as a curved convex surface.

8. An eyeglass lens, characterized by comprising the polarizing curved laminate according to claim 7.

9. An eyeglass, characterized by comprising the eyeglass lens according to claim 8.

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