Interlayer for laminated glass, laminated glass, and motor vehicle

Abstract

To provide an interlayer film for laminated glass that has excellent appearance integrity. The interlayer film for laminated glass according to the present invention comprises a first colored portion including a portion located on one end side of the interlayer film and a second colored portion including a portion located on the other end side of the interlayer film, the first colored portion having a first gradation portion in which the visible light transmittance increases from the one end side of the interlayer film to the other end side, the first gradation portion constituting the tip of the first colored portion at the other end side of the interlayer film, the second colored portion having a second gradation portion in which the visible light transmittance increases from the other end side of the interlayer film to the one end side, the second gradation portion constituting the tip of the second colored portion at the one end side of the interlayer film, and the first gradation portion and the second gradation portion exist in a specific positional relationship.

Description

Technical Field

[0001] The present invention relates to an interlayer film for laminated glass used for laminated glass. The present invention also relates to laminated glass using the above-mentioned interlayer film for laminated glass and automobiles.

Background Art

[0002] Laminated glass in which an interlayer film for laminated glass is sandwiched between a pair of glass plates is known. This laminated glass is widely used in automobiles, railway vehicles, airplanes, ships, buildings, and the like. In recent years, laminated glass having privacy protection has been demanded as laminated glass for buildings and automobiles. In laminated glass having privacy protection, for example, light can be transmitted, but there is a region where a person or an object located behind the laminated glass cannot be visually recognized.

[0003] As an example of laminated glass having privacy protection, Patent Document 1 below discloses laminated glass using a multilayer interlayer film having an opaque layer. In this laminated glass, privacy protection is realized by the opaque layer that makes it impossible to visually recognize a person or an object located behind the laminated glass.

[0004] Patent Documents 2 and 3 below disclose laminated glass using an interlayer film having a gradation pattern.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] The design technology of laminated glass has improved, and the applications of laminated glass have diversified. Also, as laminated glass, rear glass and roof glass are known. In such rear glass and roof glass, colored laminated glass with privacy protection may be used.

[0007] Further, as a new example of laminated glass, a real roof integrated glass in which rear glass and roof glass are integrated or appear to be integrated is assumed. In such real roof integrated glass, there is also a possibility of using colored laminated glass with privacy protection.

[0008] Also, in some countries, it is obligatory to install a high-mounted stop lamp on a vehicle. By installing the high-mounted stop lamp inside the vehicle, improvement of the aerodynamic characteristics of the vehicle can be expected.

[0009] However, when using colored laminated glass with privacy protection as described in Patent Document 1 as the interlayer for roof glass, rear glass, and real roof integrated glass, the light emitted from the high-mounted stop lamp may not sufficiently transmit through the laminated glass.

[0010] In FIGS. 1 etc. of Patent Documents 2 and 3, an interlayer having a colored region only on one end side of the interlayer is disclosed. In this interlayer, the thickness of one colored region continuously decreases toward the inside in the plane direction of the interlayer. Therefore, a gradation pattern is imparted to the interlayer by one colored region. When this interlayer is used as the interlayer for roof glass, rear glass, and real roof integrated glass, the light emitted from the high-mounted stop lamp transmits through the uncolored region, but hardly transmits through the colored region sufficiently. For this reason, the colored region and the uncolored region are clearly distinguishable and visible.

[0011] Further, FIG. 4 of Patent Documents 2 and 3 discloses an intermediate film having colored regions on one end side and the other end side of the intermediate film, respectively. In this intermediate film, the thicknesses of the two colored regions continuously decrease toward the inside in the plane direction of the intermediate film. Therefore, a gradation pattern is imparted to the intermediate film by the two colored regions. However, in this intermediate film, there is a large-area uncolored region where no colored region is provided at the center in the plane direction of the intermediate film. For this reason, even when this intermediate film is used as an intermediate film for roof glass, rear glass, and rear roof integrated glass, the light emitted from the high-mount stop lamp passes through the uncolored region, but hardly passes through the colored region sufficiently, and the two colored regions and the uncolored region therebetween are clearly separated and visible.

[0012] In recent years, the design of roof glass, rear glass, and rear roof integrated glass has become even more sophisticated, and there may be a demand for a new design property called appearance integrity in which the light emitted from the high-mount stop lamp passes through the uncolored region and the colored region and the uncolored region appear to be integrated with the same color tone when observing the laminated glass. However, in the conventional intermediate film as described in Patent Documents 2 and 3, the colored region and the uncolored region are clearly separated and visible, so that the laminated glass cannot be visually recognized integrally.

[0013] An object of the present invention is to provide an intermediate film for laminated glass having excellent appearance integrity.

[0014] Another object of the present invention is to provide a laminated glass and an automobile using the above intermediate film for laminated glass.

Means for Solving the Problems

[0015] According to a broad aspect of the present invention, there is provided an interlayer film for laminated glass (hereinafter sometimes referred to as an interlayer film) having one end and the other end on the side opposite to the one end, and having a first colored portion and a second colored portion, wherein the first colored portion includes a portion located closer to the one end side of the interlayer film than the second colored portion, the second colored portion includes a portion located closer to the other end side of the interlayer film than the first colored portion, the first colored portion has a first gradient portion in which the visible light transmittance increases from the one end side to the other end side of the interlayer film, the first gradient portion constitutes the tip of the first colored portion on the other end side of the interlayer film, the second colored portion has a second gradient portion in which the visible light transmittance increases from the other end side to the one end side of the interlayer film, the second gradient portion constitutes the tip of the second colored portion on the one end side of the interlayer film, and the interlayer film includes the following configuration A, configuration B, or configuration C.

[0016] Configuration A: "When the interlayer film is viewed in plan view, the positions of the tip of the first gradient portion and the tip of the second gradient portion are the same." Configuration B: "When the interlayer film is viewed in plan view, there is a region where the first gradient portion and the second gradient portion overlap." Configuration C: "When the interlayer film is viewed in plan view, the first gradient portion and the second gradient portion do not overlap, and when the interlayer film is viewed in plan view, the distance of the portion between the tip of the first gradient portion and the tip of the second gradient portion is more than 0 cm and 30 cm or less."

[0017] In a specific aspect of the interlayer film according to the present invention, when the interlayer film is viewed in plan view, the planar area of the portion where at least one of the first colored portion and the second colored portion exists in the total planar area of 100% of the interlayer film is 80% or more.

[0018] In a specific aspect of the interlayer film according to the present invention, when laminated glass is obtained by sandwiching an interlayer film for laminated glass between two green glasses with a thickness of 2 mm in accordance with JIS R3208, the planar area of the portion where the visible light transmittance is 60% or less in the total planar area of the laminated glass is 80% or more.

[0019] In a specific aspect of the interlayer film according to the present invention, when laminated glass is obtained by sandwiching an interlayer film for laminated glass between two green glasses with a thickness of 2 mm in accordance with JIS R3208, the visible light transmittance of the portion having the maximum visible light transmittance in the entire laminated glass is 60% or less.

[0020] In a specific aspect of the interlayer film according to the present invention, the first colored portion reaches the one end of the interlayer film, and the second colored portion reaches the other end of the interlayer film.

[0021] In a specific aspect of the interlayer film according to the present invention, the interlayer film includes a transparent portion disposed on at least one surface side of the first colored portion in the thickness direction of the interlayer film, and a transparent portion disposed on at least one surface side of the second colored portion in the thickness direction of the interlayer film.

[0022] In a specific aspect of the interlayer film according to the present invention, the interlayer film is an interlayer film for laminated glass used for a backlight or a brake light display portion.

[0023] In a specific aspect of the interlayer film according to the present invention, the interlayer film is used for a rear glass, a roof glass, or a rear roof integrated glass.

[0024] In a specific aspect of the interlayer film according to the present invention, the interlayer film has the following Configuration A: "When the interlayer film is viewed in plan view, the positions of the tips of the first gradation portion and the tips of the second gradation portion are the same."

[0025] In a specific aspect of the interlayer film according to the present invention, the interlayer film has the above-described Configuration B: "When the interlayer film is viewed in a plan view, there is a region where the first gradation portion and the second gradation portion overlap."

[0026] In a specific aspect of the interlayer film according to the present invention, the interlayer film has the above-described Configuration C: "When the interlayer film is viewed in a plan view, the first gradation portion and the second gradation portion do not overlap, and when the interlayer film is viewed in a plan view, the distance between the tip of the first gradation portion and the tip of the second gradation portion is more than 0 cm and 30 cm or less."

[0027] According to a broad aspect of the present invention, there is provided a laminated glass including a first laminated glass member, a second laminated glass member, and the above-described interlayer film for laminated glass, wherein the interlayer film for laminated glass is disposed between the first laminated glass member and the second laminated glass member.

[0028] In a specific aspect of the laminated glass according to the present invention, in 100% of the total planar area of the laminated glass, the planar area of the portion where the visible light transmittance is 60% or less is 80% or more.

[0029] In a specific aspect of the laminated glass according to the present invention, among the whole of the laminated glass, the visible light transmittance of the portion where the visible light transmittance is the maximum is 60% or less.

[0030] According to a broad aspect of the present invention, there is provided an automobile including an automobile body and laminated glass as a window glass of the automobile, wherein the laminated glass includes a first laminated glass member, a second laminated glass member, and the above-described interlayer film for laminated glass, and the interlayer film for laminated glass is disposed between the first laminated glass member and the second laminated glass member.

[0031] In a specific aspect of the motor vehicle according to the present invention, the motor vehicle is provided with a backlight or a brake light. When the interlayer film has the Configuration A, a portion where the positions of the tips of the first gradation portion and the second gradation portion are the same is the display portion of the backlight or the brake light. When the interlayer film has the Configuration B, a region where the first gradation portion and the second gradation portion overlap is the display portion of the backlight or the brake light. When the interlayer film has the Configuration C, a portion between the tips of the first gradation portion and the second gradation portion is the display portion of the backlight or the brake light.

Advantages of the Invention

[0032] The interlayer film for laminated glass according to the present invention has one end and the other end on the side opposite to the one end. The interlayer film for laminated glass according to the present invention has a first colored portion and a second colored portion. The first colored portion includes a portion located closer to the one end side of the interlayer film than the second colored portion. The second colored portion includes a portion located closer to the other end side of the interlayer film than the first colored portion. In the interlayer film for laminated glass according to the present invention, the first colored portion has a first gradation portion in which the visible light transmittance increases from the one end side to the other end side of the interlayer film, and the first gradation portion constitutes the tip of the first colored portion on the other end side of the interlayer film. In the interlayer film for laminated glass according to the present invention, the second colored portion has a second gradation portion in which the visible light transmittance increases from the other end side to the one end side of the interlayer film, and the second gradation portion constitutes the tip of the second colored portion on the one end side of the interlayer film. The interlayer film for laminated glass according to the present invention has the above Configuration A, Configuration B, or Configuration C. In the interlayer film for laminated glass according to the present invention, since the above overall configuration is provided, the appearance integrality is excellent.

Brief Description of the Drawings

[0033]

Figure 1

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Figure 9

Figure 10

Figure 11

BEST MODE FOR CARRYING OUT THE INVENTION

[0034] Hereinafter, the present invention will be described in detail.

[0035] The interlayer film for laminated glass according to the present invention (hereinafter sometimes referred to as the interlayer film) has one end and the other end on the side opposite to the one end. One end and the other end of the interlayer film according to the present invention are end portions on both opposite sides.

[0036] The interlayer film according to the present invention has a first colored portion and a second colored portion. The first colored portion includes a portion located closer to the one end side of the interlayer film than the second colored portion. The second colored portion includes a portion located closer to the other end side of the interlayer film than the first colored portion. The tip of the first colored portion on the one end side of the interlayer film is located closer to the one end side of the interlayer film than the tip of the second colored portion on the one end side of the interlayer film. The tip of the second colored portion on the other end side of the interlayer film is located closer to the other end side of the interlayer film than the tip of the first colored portion on the other end side of the interlayer film.

[0037] The first colored portion has a first gradation portion. The first gradation portion is a portion where the visible light transmittance increases from the one end side to the other end side of the interlayer film. Due to this change in the visible light transmittance, the color tone of the first gradation portion changes. For example, in the first gradation portion, the color tone becomes lighter from the one end side to the other end side of the interlayer film. The first gradation portion constitutes the tip of the first colored portion on the other end side of the interlayer film. The tip of the portion where the visible light transmittance increases from the one end side to the other end side of the interlayer film is the tip of the first gradation portion.

[0038] The second colored portion has a second gradation portion. The second gradation portion is a portion where the visible light transmittance increases from the other end side to the one end side of the intermediate film. Due to this change in the visible light transmittance, the color tone of the second gradation portion is changing. For example, in the second gradation portion, the color tone becomes lighter from the other end side to the one end side of the intermediate film. The second gradation portion constitutes the tip of the second colored portion at the one end side of the intermediate film. The tip of the portion where the visible light transmittance increases from the other end side to the one end side of the intermediate film is the tip of the second gradation portion.

[0039] The intermediate film according to the present invention, in addition to the above-described configuration, further includes the following Configuration A, Configuration B, or Configuration C.

[0040] Configuration A: "When the intermediate film is viewed in plan view, the positions of the tip of the first gradation portion and the tip of the second gradation portion are the same." Configuration B: "When the intermediate film is viewed in plan view, there is a region where the first gradation portion and the second gradation portion overlap." Configuration C: "When the intermediate film is viewed in plan view, the first gradation portion and the second gradation portion do not overlap, and when the intermediate film is viewed in plan view, the distance of the portion between the tip of the first gradation portion and the tip of the second gradation portion exceeds 0 cm and is 30 cm or less."

[0041] In the intermediate film according to the present invention, since the above overall configuration is provided, the appearance integrality is excellent. In the laminated glass using the intermediate film according to the present invention, the appearance integrality is excellent in the first and second gradation portions of the intermediate film or in the vicinity thereof.

[0042] In this specification, "appearance integrality" means the design property that when observing the intermediate film for laminated glass, the first and second gradation portions or the vicinity thereof appear to be integrated with the same color tone.

[0043] Further, the interlayer film according to the present invention is used to obtain laminated glass. The interlayer film according to the present invention is an interlayer film for laminated glass suitable for laminated glass. The interlayer film according to the present invention is an interlayer film for laminated glass that can be used for laminated glass. The above-mentioned laminated glass can be used in automobiles, railway vehicles, airplanes, ships, buildings, etc. The interlayer film and the laminated glass according to the present invention are preferably used for a backlight or a brake light display portion. The interlayer film and the laminated glass according to the present invention are preferably used for rear glass, roof glass, or rear roof integrated glass, and more preferably used for rear roof integrated glass. The interlayer film and the laminated glass according to the present invention are preferably used for rear glass having a display portion of a backlight or a brake light, roof glass having a display portion of a backlight or a brake light, or rear roof integrated glass having a display portion of a backlight or a brake light.

[0044] In the laminated glass using the interlayer film according to the present invention, by applying light from a backlight or a brake light to the above-mentioned first and second gradation portions of the interlayer film or the vicinity thereof, the light of the backlight or the brake light can be clearly visually recognized.

[0045] FIG. 11 is a perspective view schematically showing a conventional interlayer film for laminated glass and laminated glass. The interlayer film 111 shown in FIG. 11 is in a state of being laminated glass 121. In the interlayer film 111, only the first colored portion 102 having the first gradation portion 102X is formed in the transparent portion 101, and the second colored portion is not formed. In such laminated glass 121, one side and the other side of the first gradation portion 102X are clearly separated and visually recognized, and the appearance integrity is poor.

[0046] The above-mentioned first colored portion usually contains a coloring agent. The above-mentioned first gradation portion can be produced by the following methods (1) and (2). (1) A method of thinning the thickness of the first colored portion from one end side to the other end side of the interlayer film. (2) A method of reducing the concentration of the coloring agent from one end side to the other end side of the interlayer film.

[0047] The first gradation portion is, for example, a portion where the thickness of the first colored portion becomes thinner from the one end side to the other end side of the intermediate film, or a portion where the concentration of the colorant in the first colored portion becomes lower from the one end side to the other end side of the intermediate film. From the viewpoint of making the gradation state even better, it is preferable that the first gradation portion is a portion where the thickness of the first colored portion becomes thinner from the one end side to the other end side of the intermediate film.

[0048] The second colored portion usually contains a colorant. The second gradation portion can be produced by methods such as the following (1) and (2). (1) A method of reducing the thickness of the second colored portion from the other end side to the one end side of the intermediate film. (2) A method of reducing the concentration of the colorant from the other end side to the one end side of the intermediate film.

[0049] The second gradation portion is, for example, a portion where the thickness of the second colored portion becomes thinner from the other end side to the one end side of the intermediate film, or a portion where the concentration of the colorant in the second colored portion becomes lower from the other end side to the one end side of the intermediate film. From the viewpoint of making the gradation state even better, it is preferable that the second gradation portion is a portion where the thickness of the second colored portion becomes thinner from the other end side to the one end side of the intermediate film.

[0050] The intermediate film according to the present invention may have a transparent portion.

[0051] Whether it is a transparent part can be determined, for example, as follows. When a laminated glass is obtained by sandwiching a transparent part with a thickness of 800 μm between two pieces of green glass with a thickness of 2 mm conforming to JIS R3208, and the visible light transmittance of the laminated glass exceeds 60%, it is determined as a transparent part. The transparent part may or may not contain a colorant. In addition, when the thickness of the transparent part of the interlayer film is less than 800 μm, etc., a transparent part for visible light transmittance measurement may be separately produced. When the thickness of the transparent part of the interlayer film exceeds 800 μm, etc., the transparent part may be cut to obtain a transparent part for visible light transmittance measurement.

[0052] From the viewpoint of suppressing deterioration of the color tone, it is preferable that the interlayer film includes a transparent part, and in the thickness direction of the interlayer film, it is preferable that the transparent part is disposed on at least one surface side of the first colored part. From the viewpoint of suppressing deterioration of the color tone, in the thickness direction of the interlayer film, it is preferable that the transparent parts are disposed on both surface sides of the first colored part. From the viewpoint of suppressing deterioration of the color tone, it is preferable that the first colored part is embedded in the transparent part. From the viewpoint of suppressing deterioration of the color tone, it is preferable that the first colored part is disposed between the transparent parts.

[0053] From the viewpoint of suppressing deterioration of the color tone, it is preferable that the interlayer film includes a transparent part, and in the thickness direction of the interlayer film, it is preferable that the transparent part is disposed on at least one surface side of the second colored part. From the viewpoint of suppressing deterioration of the color tone, in the thickness direction of the interlayer film, it is preferable that the transparent parts are disposed on both surface sides of the second colored part. From the viewpoint of suppressing deterioration of the color tone, it is preferable that the second colored part is embedded in the transparent part. From the viewpoint of suppressing deterioration of the color tone, it is preferable that the second colored part is disposed between the transparent parts.

[0054] The transparent part disposed on at least one surface side of the first colored part and the transparent part disposed on at least one surface side of the second colored part may be the same or different. The transparent part disposed on at least one surface side of the first colored part and the transparent part disposed on at least one surface side of the second colored part may or may not be continuous.

[0055] The intermediate film has the above-described Configuration A, Configuration B, or Configuration C. The intermediate film may have the above-described Configuration A or Configuration B, may have the above-described Configuration A or Configuration C, or may have the above-described Configuration B or Configuration C. The intermediate film may have the above-described Configuration A, may have the above-described Configuration B, or may have the above-described Configuration C.

[0056] In the above-described Configuration A, when the intermediate film is viewed in plan view, the positions of the tips of the first gradation part and the tips of the second gradation part are the same. The tips of the first gradation part and the tips of the second gradation part may not be in contact. It is preferable that the tips of the first gradation part and the tips of the second gradation part are in contact. In the portion where the positions of the tips of the first gradation part and the tips of the second gradation part are the same, there may or may not be a boundary line, and there may or may not be a boundary surface. The first colored part and the second colored part may be integrally formed. The tips of the first gradation part and the tips of the second gradation part may be integrally formed. The tips of the first gradation part and the tips of the second gradation part may be in surface contact or point contact.

[0057] In the above-described Configuration A, the first and second gradation portions can be visually recognized integrally. For this reason, the appearance integrality of the intermediate film and the laminated glass is excellent. When the intermediate film is viewed in a plan view, a gradation pattern in which the color tone becomes darker toward both sides can be visually recognized with the center being the portion where the tips of the first gradation portion and the tips of the second gradation portion are at the same position.

[0058] In Configuration B, when the intermediate film is viewed in a plan view, there is a region where the first gradation portion and the second gradation portion overlap. The first gradation portion includes a portion located on the other end side of the intermediate film with respect to the tip of the second gradation portion. The second gradation portion includes a portion located on the one end side of the intermediate film with respect to the tip of the first gradation portion. The tip of the first gradation portion on the other end side of the intermediate film is located on the other end side of the intermediate film with respect to the tip of the second gradation portion on the one end side of the intermediate film. The tip of the second gradation portion on the one end side of the intermediate film is located on the one end side of the intermediate film with respect to the tip of the first gradation portion on the other end side of the intermediate film.

[0059] In Configuration B, in the region where the first gradation portion and the second gradation portion overlap, the first gradation portion and the second gradation portion may or may not be in surface contact in the thickness direction of the intermediate film. A transparent portion may be disposed between the first gradation portion and the second gradation portion.

[0060] The overlapping distance between the first gradation portion and the second gradation portion is preferably 30 cm or less, more preferably 20 cm or less, still more preferably 15 cm or less, particularly preferably 10 cm or less, and most preferably 5 cm or less.

[0061] The overlapping distance is preferably the distance in the direction connecting the one end and the other end of the intermediate film.

[0062] In the above-described Configuration B, it is preferable that the first colored portion and the second colored portion exist at different depth positions from each other in the thickness direction of the intermediate film. In this case, it is possible to exhibit a design property in which the color tone varies depending on the direction and angle of observing the laminated glass.

[0063] From the viewpoint of further enhancing the appearance integrality, in the above-described Configuration B, it is preferable that there is further a region where the first gradation portion and the second gradation portion do not overlap when the intermediate film is viewed in plan view. It is preferable that the first gradation portion includes a portion located on the one end side of the intermediate film rather than the second gradation portion. It is preferable that the second gradation portion includes a portion located on the other end side of the intermediate film rather than the first gradation portion. The tip of the first gradation portion on the one end side of the intermediate film is preferably located on the one end side of the intermediate film rather than the tip of the second gradation portion on the one end side of the intermediate film. The tip of the second gradation portion on the other end side of the intermediate film is preferably located on the other end side of the intermediate film rather than the tip of the first gradation portion on the other end side of the intermediate film.

[0064] In the above-described Configuration B, the first and second gradation portions can be visually recognized integrally. Therefore, the appearance integrality of the intermediate film and the laminated glass is excellent.

[0065] In the above-described configuration C, when the intermediate film is viewed in plan view, the first gradation portion and the second gradation portion do not overlap, and when the intermediate film is viewed in plan view, the distance between the tip of the first gradation portion and the tip of the second gradation portion (hereinafter, may be referred to as distance D) exceeds 0 cm and is 30 cm or less. The first gradation portion does not include the portion of the intermediate film located on the other end side of the intermediate film than the second gradation portion. The second gradation portion does not include the portion of the intermediate film located on the one end side of the intermediate film than the first gradation portion. The tip of the first gradation portion on the other end side of the intermediate film is located on the one end side of the intermediate film rather than the tip of the second gradation portion on the one end side of the intermediate film. The tip of the second gradation portion on the one end side of the intermediate film is located on the other end side of the intermediate film rather than the tip of the first gradation portion on the other end side of the intermediate film.

[0066] In the above-described configuration C, in the thickness direction of the intermediate film, the first colored portion and the second colored portion may exist at the same depth position or at different depth positions from each other. From the viewpoint of expressing a design property in which the color tone varies depending on the viewing direction and angle of the laminated glass, in the above-described configuration C, it is preferable that the first colored portion and the second colored portion exist at different depth positions from each other in the thickness direction of the intermediate film. From the viewpoint of expressing a design property with a uniform color tone regardless of the viewing direction and angle of the laminated glass, in the above-described configuration C, it is preferable that the first colored portion and the second colored portion exist at the same depth position from each other in the thickness direction of the intermediate film.

[0067] In the above-described configuration C, the distance D is relatively small. Therefore, in the intermediate film and the laminated glass, the first and second gradation portions can be visually recognized almost integrally. Therefore, the appearance integrality of the intermediate film and the laminated glass is excellent. The smaller the distance D is, the more integrally the first and second gradation portions can be visually recognized.

[0068] From the viewpoint of further improving the appearance integrity and from the viewpoint of visually recognizing the light of the backlight or brake light in a better gradation state, the distance D is preferably 20 cm or less, more preferably 15 cm or less, still more preferably 10 cm or less, and particularly preferably 5 cm or less.

[0069] The distance D is determined as the distance in the plane direction of the intermediate film (see FIGS. 3, 7, and 8 described later).

[0070] From the viewpoint of further improving the appearance integrity, when the intermediate film is viewed in plan view, the planar area of the portion where at least one of the first colored portion and the second colored portion exists in 100% of the total planar area of the intermediate film is preferably 80% or more, more preferably 90% or more, still more preferably 92% or more, further preferably 94% or more, and even more preferably 95% or more. The planar area of the portion where at least one of the first colored portion and the second colored portion exists in 100% of the total planar area of the intermediate film is 100% or less. The planar area of the portion where at least one of the first colored portion and the second colored portion exists in 100% of the total planar area of the intermediate film may be 100%.

[0071] When a laminated glass intermediate film is sandwiched between two pieces of green glass with a thickness of 2 mm in accordance with JIS R3208 to obtain laminated glass, the obtained laminated glass is designated as laminated glass L1. In the laminated glass L1, green glass with a thickness of 2 mm is used. In this case, the green glass is green glass for measuring the visible light transmittance. Also, the laminated glass actually obtained using the laminated glass intermediate film according to the present invention is designated as laminated glass L2. In the laminated glass L2, green glass with a thickness of 2 mm may or may not be used.

[0072] From the perspective of further improving the appearance integrity, in the total planar area of 100% of the laminated glass L1 and the laminated glass L2, the planar area of the portion with a visible light transmittance of 60% or less is preferably 80% or more, more preferably 90% or more, still more preferably 92% or more, even more preferably 94% or more, and even still more preferably 95% or more. In the total planar area of 100% of the laminated glass L1 and the laminated glass L2, the planar area of the portion with a visible light transmittance of 60% or less is 100% or less. In the total planar area of 100% of the laminated glass L1 and the laminated glass L2, the planar area of the portion with a visible light transmittance of 60% or less may be 100%.

[0073] From the perspective of further improving the appearance integrity, in the total planar area of 100% of the laminated glass L1 and the laminated glass L2, the planar area of the portion with a visible light transmittance of 50% or less is preferably 80% or more, more preferably 90% or more, still more preferably 92% or more, even more preferably 94% or more, and even still more preferably 95% or more. In the total planar area of 100% of the laminated glass L1 and the laminated glass L2, the planar area of the portion with a visible light transmittance of 50% or less is 100% or less. In the total planar area of 100% of the laminated glass L1 and the laminated glass L2, the planar area of the portion with a visible light transmittance of 50% or less may be 100%.

[0074] From the perspective of further improving the appearance integrity, in the total planar area of 100% of the laminated glass L1 and the laminated glass L2, the planar area of the portion with a visible light transmittance of 40% or less is preferably 80% or more, more preferably 90% or more, still more preferably 92% or more, even more preferably 94% or more, and even still more preferably 95% or more. In the total planar area of 100% of the laminated glass L1 and the laminated glass L2, the planar area of the portion with a visible light transmittance of 40% or less is 100% or less. In the total planar area of 100% of the laminated glass L1 and the laminated glass L2, the planar area of the portion with a visible light transmittance of 40% or less may be 100%.

[0075] From the perspective of further improving the appearance integrity, among the entire combined glass L1 and combined glass L2, the visible light transmittance of the part with the maximum visible light transmittance is preferably 60% or less, more preferably 50% or less, and still more preferably 40% or less.

[0076] The visible light transmittances of the combined glass L1, the combined glass L2, and the combined glass according to the present invention are obtained by measuring the transmittance of the combined glass at wavelengths of 380 nm to 780 nm using a spectrophotometer ("U-4100" manufactured by Hitachi High-Tech Corporation) in accordance with JIS R3106:1998 or JIS R3212:1998.

[0077] The combined glass according to the present invention includes a first combined glass member, a second combined glass member, and the intermediate film. The intermediate film for combined glass is disposed between the first combined glass member and the second combined glass member.

[0078] The automobile according to the present invention includes an automobile body and a combined glass as the window glass of the automobile. The combined glass includes a first combined glass member, a second combined glass member, and the intermediate film. The intermediate film is disposed between the first combined glass member and the second combined glass member.

[0079] Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. Note that the sizes and dimensions of the intermediate film and the combined glass in FIGS. 1 to 8 are appropriately changed from the actual sizes and shapes for the convenience of illustration. In FIGS. 1 to 8, different parts can be replaced with each other. In FIGS. 1 to 8, parts that may be similarly configured may be given the same reference numerals.

[0080] FIG. 1 is a cross-sectional view schematically showing an intermediate film for combined glass and a combined glass according to a first embodiment of the present invention.

[0081] The intermediate film 11 shown in FIG. 1 has the above-described configuration A.

[0082] The intermediate film 11 has one end 11a and the other end 11b on the side opposite to the one end 11a.

[0083] The intermediate film 11 has a transparent part 1, a first colored part 2, and a second colored part 3. The first colored part 2 includes a portion located closer to the one end 11a side of the intermediate film 11 than the second colored part 3. The second colored part 3 includes a portion located closer to the other end 11b side of the intermediate film 11 than the first colored part 2. The first colored part 2 reaches the one end 11a of the intermediate film 11. The second colored part 3 reaches the other end 11b of the intermediate film 11. In the thickness direction of the intermediate film 11, the first colored part 2 and the second colored part 3 exist at the same depth position with respect to each other.

[0084] The transparent part 1 is disposed on both surface sides of the first colored part 2. The first colored part 2 is embedded in the transparent part 1. The transparent part 1 is disposed on both surface sides of the second colored part 3. The second colored part 3 is embedded in the transparent part 1. The transparent part 1 is the surface layer of the intermediate film 11. The first colored part 2 and the second colored part 3 are each the intermediate layer of the intermediate film 11.

[0085] The first colored part 2 has a first gradation part 2X in which the visible light transmittance increases from the one end 11a side to the other end 11b side of the intermediate film 11. The first gradation part 2X constitutes the tip of the first colored part 2 on the other end 11b side of the intermediate film 11. The first colored part 2 has a first non-gradation part 2Y on the one end 11a side of the intermediate film 11. The first colored part 2 reaches the one end 11a of the intermediate film 11 at the first non-gradation part 2Y. The first gradation part 2X is a part where the thickness of the first colored part 2 becomes thinner from the one end 11a side to the other end 11b side of the intermediate film 11. The first non-gradation part 2Y is a part where the thickness of the first colored part 2 is uniform.

[0086] The second colored portion 3 has a second gradation portion 3X with a higher visible light transmittance from the other end 11b side to the one end 11a side of the intermediate film 11. The second gradation portion 3X constitutes the tip of the second colored portion 3 on the one end 11a side of the intermediate film 11. The second colored portion 3 has a second non-gradation portion 3Y on the other end 11b side of the intermediate film 11. The second colored portion 3 reaches the other end 11b of the intermediate film 11 at the second non-gradation portion 3Y. The second gradation portion 3X is a portion where the thickness of the second colored portion 3 becomes thinner from the other end 11b side to the one end 11a side of the intermediate film 11. The second non-gradation portion 3Y is a portion where the thickness of the second colored portion 3 is uniform.

[0087] When the intermediate film 11 is viewed in plan view (in the direction of arrow P in FIG. 1), the positions of the tip 2Xa of the first gradation portion 2X and the tip 3Xa of the second gradation portion 3X are the same. The tip 2Xa of the first gradation portion 2X and the tip 3Xa of the second gradation portion 3X are in contact with each other.

[0088] In FIG. 1, the intermediate film 11 is shown in a state of being laminated glass 31. The laminated glass 31 includes a first laminated glass member 21, a second laminated glass member 22, and the intermediate film 11. The intermediate film 11 is disposed between the first laminated glass member 21 and the second laminated glass member 22. The first laminated glass member 21 is disposed and laminated on the first surface side of the intermediate film 11. The second laminated glass member 22 is disposed and laminated on the second surface side opposite to the first surface of the intermediate film 11.

[0089] The intermediate film 11 and the laminated glass 31 have a display portion of the backlight or the brake light 51. A portion where the tip 2Xa of the first gradation portion 2X and the tip 3Xa of the second gradation portion 3X are at the same position is the display portion of the backlight or the brake light 51. The light emitted from the backlight or the brake light 51 can be visually recognized in a gradation state at a portion where the tip 2Xa of the first gradation portion 2X and the tip 3Xa of the second gradation portion 3X are at the same position and in the vicinity thereof.

[0090] FIG. 2 is a cross-sectional view schematically showing an intermediate film for laminated glass and laminated glass according to a second embodiment of the present invention.

[0091] The intermediate film 11A shown in FIG. 2 has the above-described configuration B.

[0092] The intermediate film 11A has one end 11Aa and the other end 11Ab on the side opposite to the one end 11Aa.

[0093] The intermediate film 11A has a transparent portion 1A, a first colored portion 2A, and a second colored portion 3A. The first colored portion 2A includes a portion located closer to the one end 11Aa side of the intermediate film 11A than the second colored portion 3A. The second colored portion 3A includes a portion located closer to the other end 11Ab side of the intermediate film 11A than the first colored portion 2A. The first colored portion 2A reaches the one end 11Aa of the intermediate film 11A. The second colored portion 3A reaches the other end 11Ab of the intermediate film 11A. In the thickness direction of the intermediate film 11A, the first colored portion 2A and the second colored portion 3A exist at different depth positions from each other.

[0094] The transparent portion 1A is disposed on both surface sides of the first colored portion 2A. The first colored portion 2A is embedded in the transparent portion 1A. The transparent portion 1A is disposed on both surface sides of the second colored portion 3A. The second colored portion 3A is embedded in the transparent portion 1A. The transparent portion 1A is the surface layer of the intermediate film 11A. The first colored portion 2A and the second colored portion 3A are each an intermediate layer of the intermediate film 11A.

[0095] The first colored portion 2A has a first gradation portion 2AX with a higher visible light transmittance from one end 11Aa side to the other end 11Ab side of the intermediate film 11A. The first gradation portion 2AX constitutes the tip of the first colored portion 2A on the other end 11Ab side of the intermediate film 11A. The first colored portion 2A has a first non-gradation portion 2AY on the one end 11Aa side of the intermediate film 11A. The first colored portion 2A reaches the one end 11Aa of the intermediate film 11A at the first non-gradation portion 2AY. The first gradation portion 2AX is a portion where the thickness of the first colored portion 2A becomes thinner from the one end 11Aa side to the other end 11Ab side of the intermediate film 11A. The first non-gradation portion 2AY is a portion where the thickness of the first colored portion 2A is uniform.

[0096] The second colored portion 3A has a second gradation portion 3AX with a higher visible light transmittance from the other end 11Ab side to the one end 11Aa side of the intermediate film 11A. The second gradation portion 3AX constitutes the tip of the second colored portion 3A on the one end 11Aa side of the intermediate film 11A. The second colored portion 3A has a second non-gradation portion 3AY on the other end 11Ab side of the intermediate film 11A. The second colored portion 3A reaches the other end 11Ab of the intermediate film 11A at the second non-gradation portion 3AY. The second gradation portion 3AX is a portion where the thickness of the second colored portion 3A becomes thinner from the other end 11Ab side to the one end 11Aa side of the intermediate film 11A. The second non-gradation portion 3AY is a portion where the thickness of the second colored portion 3A is uniform.

[0097] When the intermediate film 11A is viewed in plan view (in the direction of arrow P in FIG. 2), there is a region where the first gradation portion 2AX and the second gradation portion 3AX overlap.

[0098] In FIG. 2, the intermediate film 11A is shown in a state where it is laminated glass 31A. The laminated glass 31A includes a first laminated glass member 21, a second laminated glass member 22, and the intermediate film 11A. The intermediate film 11A is disposed between the first laminated glass member 21 and the second laminated glass member 22. The first laminated glass member 21 is disposed and laminated on the first surface side of the intermediate film 11A. The second laminated glass member 22 is disposed and laminated on the second surface side opposite to the first surface of the intermediate film 11A.

[0099] The intermediate film 11A and the laminated glass 31A have a display portion of a backlight or a brake light 51. A portion where the first gradation portion 2AX and the second gradation portion 3AX overlap is the display portion of the backlight or the brake light 51. The light emitted from the backlight or the brake light 51 can be visually recognized in a gradation state at a portion where the first gradation portion 2AX and the second gradation portion 3AX overlap and in the vicinity thereof.

[0100] FIG. 3 is a cross-sectional view schematically showing an intermediate film for laminated glass and laminated glass according to a third embodiment of the present invention.

[0101] The intermediate film 11B shown in FIG. 3 has the above configuration C.

[0102] The intermediate film 11B has one end 11Ba and the other end 11Bb on the side opposite to the one end 11Ba.

[0103] The intermediate film 11B has a transparent portion 1B, a first colored portion 2B, and a second colored portion 3B. The first colored portion 2B includes a portion located closer to the one end 11Ba side of the intermediate film 11B than the second colored portion 3B. The second colored portion 3B includes a portion located closer to the other end 11Bb side of the intermediate film 11B than the first colored portion 2B. The first colored portion 2B reaches the one end 11Ba of the intermediate film 11B. The second colored portion 3B reaches the other end 11Bb of the intermediate film 11B. In the thickness direction of the intermediate film 11B, the first colored portion 2B and the second colored portion 3B exist at the same depth position with respect to each other.

[0104] On both surface sides of the first colored portion 2B, a transparent portion 1B is disposed. The first colored portion 2B is embedded in the transparent portion 1B. On both surface sides of the second colored portion 3B, a transparent portion 1B is disposed. The second colored portion 3B is embedded in the transparent portion 1B. The transparent portion 1B is the surface layer of the intermediate film 11B. The first colored portion 2B and the second colored portion 3B are respectively the intermediate layers of the intermediate film 11B.

[0105] The first colored portion 2B has a first gradient portion 2BX in which the visible light transmittance increases from one end 11Ba side to the other end 11Bb side of the intermediate film 11B. The first gradient portion 2BX constitutes the tip of the first colored portion 2B on the other end 11Bb side of the intermediate film 11B. The first colored portion 2B has a first non-gradient portion 2BY on the one end 11Ba side of the intermediate film 11B. The first colored portion 2B reaches the one end 11Ba of the intermediate film 11B at the first non-gradient portion 2BY. The first gradient portion 2BX is a portion where the thickness of the first colored portion 2B becomes thinner from the one end 11Ba side to the other end 11Bb side of the intermediate film 11B. The first non-gradient portion 2BY is a portion where the thickness of the first colored portion 2B is uniform.

[0106] The second colored portion 3B has a second gradient portion 3BX in which the visible light transmittance increases from the other end 11Bb side to the one end 11Ba side of the intermediate film 11B. The second gradient portion 3BX constitutes the tip of the second colored portion 3B on the one end 11Ba side of the intermediate film 11B. The second colored portion 3B has a second non-gradient portion 3BY on the other end 11Bb side of the intermediate film 11B. The second colored portion 3B reaches the other end 11Bb of the intermediate film 11B at the second non-gradient portion 3BY. The second gradient portion 3BX is a portion where the thickness of the second colored portion 3B becomes thinner from the other end 11Bb side to the one end 11Ba side of the intermediate film 11B. The second non-gradient portion 3BY is a portion where the thickness of the second colored portion 3B is uniform.

[0107] When the intermediate film 11B is viewed in plan view (in the direction of arrow P in FIG. 3), the tip 2BXa of the first gradation portion 2BX and the tip 3BXa of the second gradation portion 3BX do not overlap. When the intermediate film 11B is viewed in plan view, the distance D between the tip of the first gradation portion 2BX and the tip of the second gradation portion 3BX is 30 cm or less.

[0108] In FIG. 3, the intermediate film 11B is shown in a state of being laminated glass 31B. The laminated glass 31B includes a first laminated glass member 21, a second laminated glass member 22, and the intermediate film 11B. The intermediate film 11B is disposed between the first laminated glass member 21 and the second laminated glass member 22. The first laminated glass member 21 is disposed and laminated on the first surface side of the intermediate film 11B. The second laminated glass member 22 is disposed and laminated on the second surface side opposite to the first surface of the intermediate film 11B.

[0109] The intermediate film 11B and the laminated glass 31B have a display portion of a backlight or a brake light 51. The portion between the tip 2BXa of the first gradation portion 2BX and the tip 3BXa of the second gradation portion 3BX is the display portion of the backlight or the brake light 51. The light emitted from the backlight or the brake light 51 can be visually recognized in a gradation state at the portion (the portion with a narrow distance D) between the tip 2BXa of the first gradation portion 2BX and the tip 3BXa of the second gradation portion 3BX and in the vicinity thereof.

[0110] FIG. 4 is a cross-sectional view schematically showing an intermediate film for laminated glass and laminated glass according to a fourth embodiment of the present invention.

[0111] The intermediate film 11C shown in FIG. 4 has the above-described configuration A.

[0112] The intermediate film 11C is shown in a state of being laminated glass 31C.

[0113] The intermediate film 11C has one end 11Ca and the other end 11Cb on the side opposite to the one end 11Ca.

[0114] The intermediate film 11C has a transparent part 1C, a first colored part 2C, and a second colored part 3C.

[0115] The entire first colored part 2C is a first gradation part where the visible light transmittance increases from one end 11Ca side to the other end 11Cb side of the intermediate film 11C. The first gradation part constitutes the tip of the first colored part 2C on the other end 11Cb side of the intermediate film 11C. The first colored part 2C does not have an ungradated part on the one end 11Ca side of the intermediate film 11C. The first colored part 2C reaches the one end 11Ca of the intermediate film 11C at the gradation part. The thickness of the first colored part 2C (the first gradation part) becomes thinner from the one end 11Ca side to the other end 11Cb side of the intermediate film 11C.

[0116] The entire second colored part 3C is a second gradation part where the visible light transmittance increases from the other end 11Cb side to the one end 11Ca side of the intermediate film 11C. The second gradation part constitutes the tip of the second colored part 3C on the one end 11Ca side of the intermediate film 11C. The second colored part 3C does not have an ungradated part on the other end 11Cb side of the intermediate film 11C. The second colored part 3C reaches the other end 11Cb of the intermediate film 11C at the gradation part. The thickness of the second colored part 3C (the second gradation part) becomes thinner from the other end 11Cb side to the one end 11Ca side of the intermediate film 11C.

[0117] When the intermediate film 11C is viewed in plan view, the positions of the tip 2Ca of the first colored part 2C (the first gradation part) and the tip 3Ca of the second colored part 3C (the second gradation part) are the same.

[0118] The entire colored part may be a gradation part like the intermediate film 11C. Even in the intermediate film having the above-described configuration B and the above-described configuration C, the entire colored part may be a gradation part.

[0119] FIG. 5 is a cross-sectional view schematically showing an interlayer film for laminated glass and laminated glass according to a fifth embodiment of the present invention.

[0120] The interlayer film 11D shown in FIG. 5 has the above-described configuration A.

[0121] The interlayer film 11D is shown in a state of being made into laminated glass 31D.

[0122] The interlayer film 11D has one end 11Da and the other end 11Db on the side opposite to the one end 11Da.

[0123] The interlayer film 11D has a transparent portion 1D, a first colored portion 2D, and a second colored portion 3D.

[0124] The transparent portion 1D is disposed only on one surface side of the first colored portion 2D. The first colored portion 2D is not embedded in the transparent portion 1D. The transparent portion 1D is disposed only on one surface side of the second colored portion 3D. The second colored portion 3D is not embedded in the transparent portion 1D. The transparent portion 1D is the surface layer of the interlayer film 11D. The first colored portion 2D and the second colored portion 3D are each the surface layer of the interlayer film 11D.

[0125] The first colored portion 2D has a first gradation portion 2DX. The first gradation portion 2DX constitutes the tip of the first colored portion 2D on the other end 11Db side of the interlayer film 11D. The first colored portion 2D has a first non-gradation portion 2DY on the one end 11Da side of the interlayer film 11D. The first colored portion 2D reaches the one end 11Da of the interlayer film 11D at the first non-gradation portion 2DY.

[0126] The second colored portion 3D has a second gradient portion 3DX. The second gradient portion 3DX constitutes the tip of the second colored portion 3D on the one end 11Da side of the intermediate film 11D. The second colored portion 3D has a second non-gradient portion 3DY on the other end 11Db side of the intermediate film 11D. The second colored portion 3D reaches the other end 11Db of the intermediate film 11D at the second non-gradient portion 3DY.

[0127] When the intermediate film 11D is viewed in plan view, the positions of the tip 2DXa of the first gradient portion 2DX and the tip 3DXa of the second gradient portion 3DX are the same.

[0128] Like the intermediate film 11D, the colored portion may not be embedded in the transparent portion, or the colored portion may be the surface layer. Also in the intermediate film having the above-described Configuration B and the above-described Configuration C, the colored portion may not be embedded in the transparent portion, or the colored portion may be the surface layer.

[0129] FIG. 6 is a cross-sectional view schematically showing an intermediate film for laminated glass and laminated glass according to a sixth embodiment of the present invention.

[0130] The intermediate film 11E shown in FIG. 6 has the above-described Configuration A.

[0131] The intermediate film 11E is shown in a state of being made into laminated glass 31E.

[0132] The intermediate film 11E has one end 11Ea and the other end 11Eb on the opposite side of the one end 11Ea.

[0133] In FIG. 6, a colorant E is schematically shown, and the abundance of the colorant E is schematically shown. When the colorant is in a particulate state, the actual size of the colorant is considerably smaller than the size shown in FIG. 6. In FIGS. 1 to 5, 7, and 8, the illustration of the colorant is omitted.

[0134] The intermediate film 11E has a transparent portion 1E, a first colored portion 2E, and a second colored portion 3E.

[0135] The first colored portion 2E has a first gradient portion 2EX. The first gradient portion 2EX constitutes the tip of the first colored portion 2E on the other end 11Eb side of the intermediate film 11E. The first colored portion 2E has a first non-gradient portion 2EY on one end 11Ea side of the intermediate film 11E. The first colored portion 2E reaches one end 11Ea of the intermediate film 11E at the first non-gradient portion 2EY. The first gradient portion 2EX is a portion where the concentration of the colorant decreases from one end 11Ea side to the other end 11Eb side of the intermediate film 11E. The first non-gradient portion 2EY is a portion where the concentration of the colorant is uniform.

[0136] The second colored portion 3E has a second gradient portion 3EX. The second gradient portion 3EX constitutes the tip of the second colored portion 3E on one end 11Ea side of the intermediate film 11E. The second colored portion 3E has a second non-gradient portion 3EY on the other end 11Eb side of the intermediate film 11E. The second colored portion 3E reaches the other end 11Eb of the intermediate film 11E at the second non-gradient portion 3EY. The second gradient portion 3EX is a portion where the concentration of the colorant decreases from the other end 11Eb side to the one end 11Ea side of the intermediate film 11E. The second non-gradient portion 3EY is a portion where the concentration of the colorant is uniform.

[0137] When the intermediate film 11E is viewed in plan view, the positions of the tip 2EXa of the first gradient portion 2EX and the tip 3EXa of the second gradient portion 3EX are the same.

[0138] The gradient portion may be formed by a change in the concentration of the colorant, such as in the intermediate film 11E. Even in the intermediate film having the above-described Configuration B and the above-described Configuration C, the gradient portion may be formed by a change in the concentration of the colorant.

[0139] FIG. 7 is a cross-sectional view schematically showing an intermediate film for laminated glass and a laminated glass according to a seventh embodiment of the present invention.

[0140] The intermediate film 11F shown in FIG. 7 has the above-described configuration C.

[0141] The intermediate film 11F is shown in a state where it is laminated glass 31F.

[0142] The intermediate film 11F has one end 11Fa and the other end 11Fb on the side opposite to the one end 11Fa.

[0143] The intermediate film 11F has a transparent part 1F, a first colored part 2F, a second colored part 3F, and a third colored part 4F.

[0144] The first colored part 2F has a first gradation part 2FX. The first gradation part 2FX constitutes the tip of the first colored part 2F on the other end 11Fb side of the intermediate film 11F. The first colored part 2F has a first non-gradation part 2FY on the one end 11Fa side of the intermediate film 11F. The first colored part 2F reaches the one end 11Fa of the intermediate film 11F at the first non-gradation part 2FY.

[0145] The second colored part 3F has a second gradation part 3FX. The second gradation part 3FX constitutes the tip of the second colored part 3F on the one end 11Fa side of the intermediate film 11F. The second colored part 3F has a second non-gradation part 3FY on the other end 11Fb side of the intermediate film 11F. The second colored part 3F reaches the other end 11Fb of the intermediate film 11F at the second non-gradation part 3FY.

[0146] The third colored part 4F is disposed in a portion between the tip of the first gradation part 2FX and the tip of the second gradation part 3FX. The third colored part 4F is a non-gradation part. Since the third colored part 4F is a non-gradation part, it is not included in the first gradation part 2FX that constitutes the tip of the first colored part 2F. Since the third colored part 4F is a non-gradation part, it is not included in the second gradation part 3FX that constitutes the tip of the second colored part 3F.

[0147] When the intermediate film 11F is viewed in plan view, the tip 2FXa of the first gradation portion 2FX and the tip 3FXa of the second gradation portion 3FX do not overlap. When the intermediate film 11F is viewed in plan view, the distance D of the portion between the tip of the first gradation portion 2FX and the tip of the second gradation portion 3FX is 30 cm or less.

[0148] A colored portion may be disposed between the first and second gradation portions, such as the intermediate film 11F.

[0149] FIG. 8 is a cross-sectional view schematically showing an intermediate film for laminated glass and laminated glass according to an eighth embodiment of the present invention.

[0150] The intermediate film 11G shown in FIG. 8 has the above configuration C.

[0151] The intermediate film 11G is shown in a state of being laminated glass 31G.

[0152] The intermediate film 11G has one end 11Ga and the other end 11Gb on the side opposite to the one end 11Ga.

[0153] The intermediate film 11G has a transparent portion 1G, a first colored portion 2G, and a second colored portion 3G. In the thickness direction of the intermediate film 11G, the first colored portion 2G and the second colored portion 3G exist at different depth positions from each other.

[0154] The first colored portion 2G has a first gradation portion 2GX. The first gradation portion 2GX constitutes the tip of the first colored portion 2G on the other end 11Gb side of the intermediate film 11G. The first colored portion 2G has a first non-gradation portion 2GY on the one end 11Ga side of the intermediate film 11G. The first colored portion 2G reaches the one end 11Ga of the intermediate film 11G at the first non-gradation portion 2GY.

[0155] The second colored portion 3G has a second gradient portion 3GX. The second gradient portion 3GX constitutes the tip of the second colored portion 3G on the one end 11Ga side of the intermediate film 11G. The second colored portion 3G has a second non-gradient portion 3GY on the other end 11Gb side of the intermediate film 11G. The second colored portion 3G reaches the other end 11Gb of the intermediate film 11G at the second non-gradient portion 3GY.

[0156] When the intermediate film 11G is viewed in plan view, the tip 2GXa of the first gradient portion 2GX and the tip 3GXa of the second gradient portion 3GX do not overlap. When the intermediate film 11G is viewed in plan view, the distance D of the portion between the tip of the first gradient portion 2GX and the tip of the second gradient portion 3GX is 30 cm or less.

[0157] In the thickness direction of the intermediate film like the intermediate film 11G, the depth positions of the first and second gradient portions may be different. Also in the intermediate film having the above configuration A, when the tip of the first gradient portion and the tip of the second gradient portion are at the same position when the intermediate film is viewed in plan view, the depth positions of the first and second gradient portions may be different.

[0158] FIG. 9 is a plan view schematically showing a laminated glass including an intermediate film for laminated glass according to a ninth embodiment of the present invention. FIG. 10 is a perspective view schematically showing a laminated glass including an intermediate film for laminated glass according to a tenth embodiment of the present invention.

[0159] In FIGS. 9 and 10, the intermediate film is shown in a state of being laminated glass. The portions where the color tone becomes lighter are the first and second gradient portions. The first and second gradient portions are arranged in a line shape. The first and second gradient portions can be applied as a display portion of a backlight or a brake light. The laminated glass shown in FIG. 10 is a rear roof integrated type glass.

[0160] Hereinafter, other details of each member constituting the laminated glass according to the present invention will be described.

[0161] (First and second laminated glass members) Examples of the first and second laminated glass members include a glass plate and a PET (polyethylene terephthalate) film. The laminated glass includes not only laminated glass in which an intermediate film is sandwiched between two glass plates, but also laminated glass in which an intermediate film is sandwiched between a glass plate and a PET film or the like. The laminated glass is a laminate including a glass plate, and it is preferable that at least one glass plate is used. It is preferable that the first and second laminated glass members are each a glass plate or a PET (polyethylene terephthalate) film, and the laminated glass includes at least one glass plate as the first and second laminated glass members. It is particularly preferable that both of the first and second laminated glass members are glass plates.

[0162] Examples of the glass plate include inorganic glass and organic glass. Examples of the inorganic glass include float plate glass, heat ray absorbing plate glass, heat ray reflecting plate glass, polished plate glass, mold plate glass, wired glass, lined plate glass, and green glass. The organic glass is a synthetic resin glass that replaces inorganic glass. Examples of the organic glass include a polycarbonate plate and a poly(meth)acrylic resin plate. Examples of the poly(meth)acrylic resin plate include a polymethyl (meth)acrylate plate.

[0163] The thicknesses of the first laminated glass member and the second laminated glass member are not particularly limited, but are preferably 1 mm or more and preferably 5 mm or less. When the laminated glass member is a glass plate, the thickness of the glass plate is preferably 1 mm or more and preferably 5 mm or less. When the laminated glass member is a PET film, the thickness of the PET film is preferably 0.03 mm or more and preferably 0.5 mm or less.

[0164] The thickness of the first and second laminated glass members means the average thickness.

[0165] (Intermediate film) The thickness of the above-mentioned intermediate film is not particularly limited. From the perspective of practical use and from the perspective of sufficiently enhancing the penetration resistance and bending rigidity of the laminated glass, the thickness of the intermediate film is preferably 0.1 mm or more, more preferably 0.25 mm or more, preferably 3 mm or less, and more preferably 1.5 mm or less. When the thickness of the intermediate film is equal to or greater than the above lower limit, the penetration resistance and bending rigidity of the laminated glass will be even higher. When the thickness of the intermediate film is equal to or less than the above upper limit, the transparency of the intermediate film will be even better.

[0166] The thickness of the above-mentioned intermediate film means the average thickness.

[0167] Resin: The above-mentioned intermediate film preferably contains a resin. The above-mentioned transparent part preferably contains a resin. The above-mentioned colored part preferably contains a resin. Examples of the above-mentioned resin include thermosetting resins and thermoplastic resins. Only one type of the above-mentioned resin may be used, or two or more types may be used in combination.

[0168] Examples of the above-mentioned thermoplastic resin include polyvinyl acetal resin, polyester resin, ethylene-vinyl acetate copolymer resin, ethylene-acrylic acid copolymer resin, polyurethane resin, polyvinyl alcohol resin, and ionomer resin. Other thermoplastic resins may also be used.

[0169] Plasticizer: The above-mentioned intermediate film preferably contains a plasticizer. The above-mentioned transparent part preferably contains a plasticizer. The above-mentioned colored part preferably contains a plasticizer. When the thermoplastic resin contained in the intermediate film is polyvinyl acetal resin, it is particularly preferable that the intermediate film (each layer) contains a plasticizer. Only one type of the above-mentioned plasticizer may be used, or two or more types may be used in combination.

[0170] Examples of the plasticizer include organic ester plasticizers such as monobasic organic acid esters and polybasic organic acid esters, and organic phosphoric acid plasticizers such as organic phosphoric acid plasticizers and organic phosphorous acid plasticizers. Organic ester plasticizers are preferred. The plasticizer is preferably a liquid plasticizer.

[0171] Examples of the monobasic organic acid ester include glycol esters obtained by the reaction of glycol with a monobasic organic acid. Examples of the glycol include triethylene glycol, tetraethylene glycol, and tripropylene glycol. Examples of the monobasic organic acid include butyric acid, isobutyric acid, caproic acid, 2-ethylbutyric acid, heptanoic acid, n-octylic acid, 2-ethylhexanoic acid, n-nonanoic acid, decanoic acid, and benzoic acid.

[0172] Examples of the polybasic organic acid ester include ester compounds of a polybasic organic acid and an alcohol having a linear or branched structure with 4 to 8 carbon atoms. Examples of the polybasic organic acid include adipic acid, sebacic acid, and azelaic acid.

[0173] Examples of the above-mentioned organic ester plasticizers include triethylene glycol di-2-ethylpropanoate, triethylene glycol di-2-ethylbutyrate, triethylene glycol di-2-ethylhexanoate, triethylene glycol dicaprylate, triethylene glycol di-n-octanoate, triethylene glycol di-n-heptanoate, tetraethylene glycol di-n-heptanoate, dibutyl sebacate, dioctyl azelate, dibutyl carbitol adipate, ethylene glycol di-2-ethylbutyrate, 1,3-propylene glycol di-2-ethylbutyrate, 1,4-butylene glycol di-2-ethylbutyrate, diethylene glycol di-2-ethylbutyrate, diethylene glycol di-2-ethylhexanoate, dipropylene glycol di-2-ethylbutyrate, triethylene glycol di-2-ethylpentanoate, tetraethylene glycol di-2-ethylbutyrate, diethylene glycol dicaprylate, diethylene glycol dibenzoate, dipropylene glycol dibenzoate, dihexyl adipate, dioctyl adipate, hexyl cyclohexyl adipate, a mixture of heptyl adipate and nonyl adipate, diisononyl adipate, diisodecyl adipate, heptyl nonyl adipate, dibutyl sebacate, an oil-modified sebacic acid alkyd, and a mixture of a phosphate ester and an adipic acid ester. Other organic ester plasticizers may be used. Other adipic acid esters other than the above-mentioned adipic acid esters may be used.

[0174] Examples of the above-mentioned organic phosphate plasticizers include tributoxyethyl phosphate, isodecyl phenyl phosphate, and triisopropyl phosphate.

[0175] The above-mentioned plasticizer is preferably a diester plasticizer represented by the following formula (1).

[0176]

Chemical formula

[0177] In the above formula (1), R1 and R2 each represent an organic group having 5 to 10 carbon atoms, R3 represents an ethylene group, an isopropylene group or an n-propylene group, and p represents an integer of 3 to 10. In the above formula (1), R1 and R2 are preferably each an organic group having 6 to 10 carbon atoms.

[0178] The above plasticizer preferably contains triethylene glycol di-2-ethylhexanoate (3GO), triethylene glycol di-2-ethylbutyrate (3GH) or triethylene glycol di-2-ethylpropanoate. The above plasticizer more preferably contains triethylene glycol di-2-ethylhexanoate (3GO) or triethylene glycol di-2-ethylbutyrate (3GH), and even more preferably contains triethylene glycol di-2-ethylhexanoate.

[0179] In the above intermediate film, the content of the above plasticizer with respect to 100 parts by weight of the above resin (when the above resin is a thermoplastic resin, 100 parts by weight of the above thermoplastic resin; when the above resin is a polyvinyl acetal resin, 100 parts by weight of the above polyvinyl acetal resin) is defined as content (0). The content (0) is preferably 25 parts by weight or more, more preferably 30 parts by weight or more, preferably 100 parts by weight or less, more preferably 60 parts by weight or less, and even more preferably 50 parts by weight or less. When the content (0) is at least the above lower limit, the penetration resistance of the laminated glass becomes even higher. When the content (0) is at most the above upper limit, the transparency of the intermediate film becomes even higher.

[0180] Colorant: The above first colored part usually contains a colorant. Examples of the colorant include inorganic particles, pigments, dyes and the like. The above second colored part usually contains a colorant. Examples of the colorant include inorganic particles, pigments, dyes and the like.

[0181] Examples of the inorganic particles include carbon black particles, iron oxide particles, zinc oxide particles, calcium carbonate particles, alumina particles, kaolin clay particles, calcium silicate particles, magnesium oxide particles, magnesium hydroxide particles, aluminum hydroxide particles, magnesium carbonate particles, talc particles, feldspar powder particles, mica particles, barite particles, barium carbonate particles, titanium oxide particles, silica particles, and glass beads. Only one type of the inorganic particles may be used, or two or more types may be used in combination.

[0182] The inorganic particles preferably contain carbon black particles, calcium carbonate particles, titanium oxide particles, or silica particles, more preferably contain carbon black particles or calcium carbonate particles, and even more preferably contain carbon black particles. By using these preferred inorganic particles, when light is transmitted, unevenness in appearance can be suppressed, and a laminated glass with even better appearance integrity can be obtained.

[0183] The average particle diameter of the inorganic particles is preferably 1 μm or more, preferably 100 μm or less, and more preferably 50 μm or less. The average particle diameter indicates the weight average particle diameter. The average particle diameter can be measured by the dynamic light scattering method using an Ar laser as a light source with a light scattering measurement device. Examples of the light scattering measurement device include "DLS-6000AL" manufactured by Otsuka Electronics Co., Ltd.

[0184] Examples of the dye include pyrene-based dyes, aminoketone-based dyes, anthraquinone-based dyes, and azo-based dyes. Only one type of the dye may be used, or two or more types may be used in combination.

[0185] Examples of the pyrene-based dyes include Solvent Green5 (CAS 79869-59-3) and Solvent Green7 (CAS 6358-69-6).

[0186] Examples of the above aminoketone dyes include Solvent Yellow98 (CAS12671-74-8), Solvent Yellow85 (CAS12271-01-1), Solvent Red179 (CAS8910-94-5), and Solvent Red135 (CAS71902-17-5).

[0187] Examples of the above anthraquinone dyes include Solvent Yellow163 (CAS13676091-0), Solvent Red207 (CAS15958-69-6), Disperse Red92 (CAS12236-11-2), Solvent Violet13 (CAS81-48-1), Disperse Violet31 (CAS6408-72-6), Solvent Blue97 (CAS61969-44-6), Solvent Blue45 (CAS37229-23-5), Solvent Blue104 (CAS116-75-6), and Disperse Blue214 (CAS104491-84-1).

[0188] Examples of the above azo dyes include Solvent Yellow30 (CAS3321-10-4), Solvent Red164 (CAS70956-30-8), and Disperse Blue146 (CAS88650-91-3).

[0189] The above pigments may be organic pigments or inorganic pigments. The above organic pigments may be organic pigments having metal atoms or organic pigments not having metal atoms. Only one kind of the above pigments may be used, or two or more kinds may be used in combination.

[0190] Examples of the above organic pigments include phthalocyanine compounds, quinacridone compounds, azo compounds, pentaphene compounds, perylene compounds, indole compounds, and dioxazine compounds.

[0191] Examples of the above inorganic pigments include carbon black, iron oxide, zinc oxide, and titanium oxide.

[0192] It is more preferable that the inorganic pigment contains carbon black. By using carbon black, when light is transmitted, unevenness in appearance can be suppressed, and a laminated glass with even better appearance integrity can be obtained.

[0193] It is more preferable that the colored part contains calcium carbonate particles, titanium oxide particles, silica particles or carbon black. By using carbon black, when light is transmitted, unevenness in appearance can be suppressed, and a laminated glass with even better appearance integrity can be obtained.

[0194] Other components: The above intermediate film, the above transparent part and the above colored part may each contain additives such as heat shielding particles, light shielding agents, colorants, ultraviolet absorbers, antioxidants, adhesion adjusters, light stabilizers, flame retardants, antistatic agents, moisture resistant agents, heat ray reflectors and heat ray absorbers as required. Only one kind of the above additives may be used, or two or more kinds may be used in combination.

[0195] Hereinafter, the present invention will be described in more detail with reference to examples. The present invention is not limited only to the following examples.

[0196] ( Reference Examples 1 to 7. Examples 8 to 10, Reference Examples 11 to 14 and Comparative Examples 1 and 2) Preparation of a composition for forming a transparent part: 100 parts by weight of polyvinyl butyral resin and 40 parts by weight of a plasticizer (3GO) were blended and thoroughly kneaded with a mixing roll to obtain a composition for forming a transparent part.

[0197] Preparation of a composition for forming a first colored part and a second colored part: 100 parts by weight of polyvinyl butyral resin, 40 parts by weight of a plasticizer (3GO), and a colorant of the types shown in Tables 1 and 2 below were thoroughly kneaded with a mixing roll to obtain a composition for forming the first and second colored portions. The blending amount of the colorant was the blending amount shown in Table 1, and the thicknesses of the transparent portion, the first colored portion, and the second colored portion were set so that the visible light transmittance of the obtained laminated glass became the values shown in Tables 1 and 2 below.

[0198] Production of the interlayer film: An interlayer film having the configurations shown in Tables 1 and 2 below (the above Configuration A, the above Configuration B, the above Configuration C, or other configurations) was produced. The distance (length in the width direction) in the direction connecting one end and the other end of the interlayer film was set as shown in Tables 1 and 2 below. The distance in the direction orthogonal to the direction connecting one end and the other end of the interlayer film (width direction) was 50 cm.

[0199] The composition for forming the transparent portion and the compositions for forming the first and second colored portions were co-extruded using a co-extruder to obtain an interlayer film. In the plane direction of the interlayer film, the length of the first non-gradation portion in the first colored portion, the length of the first gradation portion in the first colored portion, the length of the second non-gradation portion in the second colored portion, and the length of the second gradation portion in the second colored portion were each set as shown in Tables 1 and 2 below. In the case of an interlayer film having Configuration B, etc., it may be sliced in the thickness direction of the obtained interlayer film, the cross-section in the thickness direction of the obtained interlayer film may be exposed, and the lengths of the first and second non-gradation portions and the lengths of the first and second gradation portions may be measured.

[0200] In Comparative Example 1, the first colored portion was formed, but the second colored portion was not formed. The interlayer film of Comparative Example 1 does not have the above Configuration A, the above Configuration B, and the above Configuration C, and has other configurations. In Comparative Example 2, the first colored portion and the second colored portion were formed, and a configuration similar to the above Configuration C was adopted, but the distance D was 50 cm. The interlayer film of Comparative Example 2 does not have the above Configuration A, the above Configuration B, and the above Configuration C, and has a configuration similar to the above Configuration C (the distance D exceeds 30 cm) as other configurations.

[0201] Therefore, Reference Examples 1 to 7. Examples 8 to 10, Reference Examples 11 to 14 and the intermediate films of Comparative Examples 1 and 2 have, as the first gradation portion, a portion where the visible light transmittance increases from one end side to the other end side of the intermediate film. Reference Examples 1 to 7. Examples 8 to 10, Reference Examples 11 to 14 and the intermediate film of Comparative Example 2 have, as the second gradation portion, a portion where the visible light transmittance increases from the other end side to the one end side of the intermediate film.

[0202] Fabrication of laminated glass: Two pieces of green glass (thickness 2 mm, length 100 cm, width 50 cm) compliant with JIS R3208 were prepared. Between these two pieces of green glass, the obtained intermediate film was sandwiched so that the longitudinal direction of the green glass and the direction connecting one end and the other end of the intermediate film were the same direction, and so that the transverse direction of the green glass and the direction perpendicular to the direction connecting one end and the other end of the intermediate film were the same direction. Next, it was held at 90°C for 30 minutes with a vacuum laminator and vacuum pressed to obtain laminated glass. When the distance in the direction connecting one end and the other end of the intermediate film (length in the width direction) exceeded 1 m, the laminated glass was obtained as follows. In the intermediate film having the above Configuration A, the obtained intermediate film was sandwiched between the two pieces of green glass so that the tip of the first gradation portion and the tip of the second gradation portion were located at the center in the longitudinal direction of the green glass. In the intermediate film having the above Configuration B, the above Configuration C, or other configurations, the obtained intermediate film was sandwiched between the two pieces of green glass so that a position equidistant from the tip of the first gradation portion and the tip of the second gradation portion was located at the center in the longitudinal direction of the green glass. Further, the intermediate film protruding from the green glass was cut off to obtain laminated glass.

[0203] (Evaluation) (1) Visible light transmittance Using a spectrophotometer ("U-4100" manufactured by Hitachi High-Tech Corporation), in accordance with JIS R3106:1998, the wavelength of the obtained laminated glass was 380 nm The visible transmittance at wavelengths from 400 to 780 nm was measured.

[0204] For the obtained laminated glass, the values of visible transmittance are shown in Tables 1 and 2 below.

[0205] 1) Visible transmittance of the first non-gradation part in the first colored part 2) Visible transmittance of the second non-gradation part in the second colored part 3) Ratio of the planar area of the part with a visible transmittance of 60% or less in 100% of the total planar area of the laminated glass 4) Visible transmittance of the part with the maximum visible transmittance in the entire laminated glass

[0206] (2) Appearance integrity The laminated glass was installed at an angle of 30 degrees with respect to the horizontal direction. Twenty evaluators visually observed the entire laminated glass from a position 3 m away and judged the appearance integrity according to the following criteria. The number of people who judged it as ○ is described in Tables 1 and 2.

[0207] [Judgment criteria for appearance integrity] ○ (Good): It is visually recognized that there is integrity in the gradation part and its vicinity (both sides). × (Poor): It is not visually recognized that there is integrity in the gradation part and its vicinity (both sides).

[0208] (3) Visibility of light display The laminated glass was installed at an angle of 30 degrees. While moving the irradiation site from one end of the laminated glass to the other end, the light of the LED light was irradiated. Twenty evaluators visually observed the laminated glass irradiated with light from a position 3 m away and judged the visibility of light display according to the following criteria. The number of people who judged it as ○ is described in Tables 1 and 2.

[0209] [Judgment criteria for visibility] ○ (Good): The light is well visible in the gradation part and its vicinity (both sides). ×(Defect): Light is difficult to be visually recognized in the gradient part and its vicinity (both sides).

[0210] The details and results are shown in Tables 1 and 2 below.

[0211]

Table 1

[0212]

Table 2

[0213] Reference Examples 1~ 7. Examples 8 to 10, Reference Examples 11 to 14, the laminated glass obtained had excellent appearance integrity. Also, Reference Examples 1~ 7. Examples 8 to 10, Reference Examples 11 to 14, the laminated glass obtained also had excellent display visibility of light. Note that Reference Examples 1~ 7. Examples 8 to 10, Reference Examples 11 to 14, polyvinyl acetal resin was used as the resin and carbon black was used as the colorant. However, as long as the configuration according to the present invention can be satisfied, even if a resin other than polyvinyl acetal resin and a colorant other than carbon black are used, excellent appearance integrity will be exhibited.

Explanation of Reference Signs

[0214] 1, 1A, 1B, 1C, 1D, 1E, 1F, 1G… Transparent part 2, 2A, 2B, 2D, 2E, 2F, 2G… First colored part 2C… First colored part (first gradient part) 2X, 2AX, 2BX, 2DX, 2EX, 2FX, 2GX… First gradient part 2Xa, 2AXa, 2BXa, 2DXa, 2EXa, 2FXa, 2GXa… Tip 2Ca… Tip 2Y, 2AY, 2BY, 2DY, 2EY, 2FY, 2GY… First un-graduated part 3, 3A, 3B, 3D, 3E, 3F, 3G… Second colored part 3C…Second colored part (second gradation part) 3X, 3AX, 3BX, 3DX, 3EX, 3FX, 3GX…Second gradation part 3Xa, 3AXa, 3BXa, 3DXa, 3EXa, 3FXa, 3GXa…Tip 3Ca…Tip 3Y, 3AY, 3BY, 3DY, 3EY, 3FY, 3GY…Second un-gradated part 4F…Third colored part 11, 11A, 11B, 11C, 11D, 11E, 11F, 11G…Intermediate film 11a, 11Aa, 11Ba, 11Ca, 11Da, 11Ea, 11Fa, 11Ga…One end 11b, 11Ab, 11Bb, 11Cb, 11Db, 11Eb, 11Fb, 11Gb…The other end 21…First laminated glass member 22…Second laminated glass member 31, 31A, 31B, 31C, 31D, 31E, 31F, 31G…Laminated glass 51…Backlight or brake light E…Colorant

Claims

1. having one end and the other end on the side opposite to the one end, having a first colored portion and a second colored portion, the first colored portion includes a portion located on the one end side of the intermediate film with respect to the second colored portion, and the second colored portion includes a portion located on the other end side of the intermediate film with respect to the first colored portion, the first colored portion has a first gradation portion with an increasing visible light transmittance from the one end side to the other end side of the intermediate film, and the first gradation portion constitutes the tip of the first colored portion on the other end side of the intermediate film, the second colored portion has a second gradation portion with an increasing visible light transmittance from the other end side to the one end side of the intermediate film, and the second gradation portion constitutes the tip of the second colored portion on the one end side of the intermediate film, when the intermediate film is viewed in plan view, the total of the planar area of the portion where the first colored portion exists and the planar area of the portion where the second colored portion exists in 100% of the total planar area of the intermediate film is 70% or more, The intermediate film is an intermediate film for laminated glass having the following configuration C. Configuration C: "When the intermediate film is viewed in plan view, the first gradation portion and the second gradation portion do not overlap, and when the intermediate film is viewed in plan view, the distance between the tip of the first gradation portion and the tip of the second gradation portion is more than 0 cm and 30 cm or less."

2. The intermediate film for laminated glass according to claim 1, wherein when the intermediate film is viewed in plan view, the total of the planar area of the portion where the first colored portion exists and the planar area of the portion where the second colored portion exists in 100% of the total planar area of the intermediate film is 80% or more.

3. When laminated glass is obtained by sandwiching the intermediate film for laminated glass between two pieces of green glass with a thickness of 2 mm in accordance with JIS R3208, the planar area of the portion having a visible light transmittance of 60% or less in 100% of the total planar area of the laminated glass is 80% or more. The intermediate film for laminated glass according to claim 1 or 2.

4. When laminated glass is obtained by sandwiching the intermediate film for laminated glass between two pieces of green glass with a thickness of 2 mm in accordance with JIS R3208, the visible light transmittance of the portion having the maximum visible light transmittance in the whole laminated glass is 60% or less. The intermediate film for laminated glass according to any one of claims 1 to 3.

5. The first colored portion reaches the one end of the intermediate film. The second colored portion reaches the other end of the intermediate film. The intermediate film for laminated glass according to any one of claims 1 to 4. **Claim 6** In the thickness direction of the intermediate film, a transparent portion disposed on at least one surface side of the first colored portion, In the thickness direction of the intermediate film, a transparent portion disposed on at least one surface side of the second colored portion. The intermediate film for laminated glass according to any one of claims 1 to 5. **Claim 7** The intermediate film for laminated glass used for a backlight or a brake light display portion. The intermediate film for laminated glass according to any one of claims 1 to 6. **Claim 8** The intermediate film for laminated glass used for a rear glass, a roof glass, or a rear roof integrated glass. The intermediate film for laminated glass according to any one of claims 1 to 7. **Claim 9** A first laminated glass member, A second laminated glass member, And an intermediate film for laminated glass according to any one of claims 1 to 8, The intermediate film for laminated glass is disposed between the first laminated glass member and the second laminated glass member. Laminated glass. **Claim 10** In 100% of the total plane area of the laminated glass, the plane area of the portion where the visible light transmittance is 60% or less is 80% or more. The laminated glass according to claim 9. **Claim 11** In the whole of the laminated glass, the visible light transmittance of the portion having the maximum visible light transmittance is 60% or less. The laminated glass according to claim 9 or 10. **Claim 12** An automobile body, And laminated glass as a window glass of the automobile, The laminated glass includes a first laminated glass member, a second laminated glass member, and an intermediate film for laminated glass according to any one of claims 1 to 8. The intermediate film for laminated glass is disposed between the first laminated glass member and the second laminated glass member. An automobile. **Claim 13** Equipped with a backlight or a brake light, The portion between the tip of the first gradation portion and the tip of the second gradation portion is the display portion of the backlight or the brake light. The automobile according to claim 12.

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