Functional roof and manufacturing method thereof

Abstract

To provide a functional roof capable of inhibiting generation of bubbles in a sealing layer, and a manufacturing method of the functional roof.SOLUTION: A functional roof 1 includes a sealing layer 20 having a functional layer 10, a surface protection material 30 made of a resin exhibiting light permeability, a back protection material 40, and a barrier layer 50. The barrier layer 50 includes a face-side barrier sheet 50A and a backside barrier sheet 50B. The face-side barrier sheet 50A includes a surface coating part 51, and the backside barrier sheet 50B includes a back coating part 52. The face-side barrier sheet 50A includes a face-side protrusion that protrudes from an edge of the surface coating part and is separated from the surface protection material. The face-side protrusion is connected to the backside barrier sheet while coating a surrounding end surface. Otherwise, the backside barrier sheet 50B includes a backside protrusion 53 that protrudes from an edge of the back coating part 52 and is separated from the back protection material 40. The backside protrusion 53 is connected to the face-side barrier sheet 50A while coating a surrounding end surface S3.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] This disclosure relates to functional roofs and methods for making same. [Background technology]

[0002] Conventionally, functional roofs (such as photovoltaic panels and dimming roofs) provided on the upper surface of a vehicle body have been known. For example, Japanese Patent Application Laid-Open Publication No. 2014-207362 discloses a solar cell including a solar cell, a sealing material that protects the solar cell, a light-transmitting member provided on the surface of the sealing material, a back sheet provided on the back surface of the sealing material, and a first gas barrier sheet and a second gas barrier sheet provided along the outer periphery of the sealing material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-207362 Summary of the Invention [Problem to be solved by the invention]

[0004] In the solar cell described in JP 2014-207362 A, if the light-transmitting member is made of resin to reduce weight, there is a concern that gas or water vapor may pass through the light-transmitting member to reach the encapsulant, causing bubbles in the encapsulant. Similarly, there is a concern that gas or water vapor may pass through the backsheet to reach the encapsulant, causing bubbles in the encapsulant.

[0005] An object of the present invention is to provide a functional roof that can suppress the generation of bubbles in the sealing layer, and a method for manufacturing the same. [Means for solving the problem]

[0006] A functional roof according to one aspect of the present disclosure comprises: a functional layer having a predetermined function; a sealing layer sealing the functional layer, the sealing layer having a front surface, a back surface, and a surrounding edge surface connecting the front surface and the back surface and surrounding the periphery of the functional layer in an annular shape; a surface protective material made of a light-transmitting resin and protecting the front surface of the sealing layer; a back protective material protecting the back surface of the sealing layer; and a barrier layer covering the sealing layer, the barrier layer including a front-side barrier sheet disposed between the sealing layer and the surface protective material, and a back-side barrier sheet disposed between the sealing layer and the back protective material, The barrier sheet includes a surface covering portion that covers the entire surface of the sealing layer, and the back barrier sheet includes a back covering portion that covers the entire back surface of the sealing layer, and the front barrier sheet has a surface overhang that protrudes from an edge of the surface covering portion and is spaced apart from the surface protective material, and the surface overhang is connected to the back barrier sheet in a state where it covers the surrounding edge surface, or the back barrier sheet has a back overhang that protrudes from an edge of the back covering portion and is spaced apart from the back protective material, and the back overhang is connected to the front barrier sheet in a state where it covers the surrounding edge surface.

[0007] Also, a manufacturing method of a functional roof according to one aspect of the present disclosure comprises a functional layer having a predetermined function, a sealing layer sealing the functional layer, a surface protective material made of a light-transmitting resin and protecting the surface of the sealing layer, a back protective material protecting the back surface of the sealing layer, and a barrier layer covering the sealing layer, the barrier layer having a front-side barrier sheet arranged between the sealing layer and the surface protective material, and a back-side barrier sheet arranged between the sealing layer and the back protective material, and the manufacturing method of a functional roof according to one aspect of the present disclosure comprises the surface protective material, the front-side barrier sheet, a plurality of sealing layer-forming materials constituting the sealing layer, the functional layer arranged within the plurality of sealing layer-forming materials, and the back-side barrier sheet. and the back surface protective material to form a laminate; an integration process in which the laminate is heated to soften the plurality of sealing layer-forming materials to form the sealing layer that seals the functional layer, and the barrier layer that covers the sealing layer is formed by connecting the front-side barrier sheet and the back surface protective material to each other; and a heat pressing process in which, after the integration process, the surface protective material, the sealing layer, the barrier layer, and the back surface protective material are pressed while being heated so that they are curved so as to be convex toward one side in the stacking direction. [Effects of the Invention]

[0008] According to this disclosure, it is possible to provide a functional roof that can suppress the generation of bubbles in the sealing layer, and a method for manufacturing the same. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a plan view schematically illustrating a functional roof according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] 1A to 1C are cross-sectional views schematically illustrating a method for manufacturing a functional roof. [Figure 4] 10A and 10B are diagrams showing schematic diagrams of modified functional roofs; [Figure 5] 10A and 10B are diagrams showing schematic diagrams of modified functional roofs; [Figure 6] 10A and 10B are diagrams showing schematic diagrams of modified functional roofs; [Figure 7] 10A and 10B are diagrams showing schematic diagrams of modified functional roofs; [Figure 8] 10A and 10B are diagrams showing schematic diagrams of modified functional roofs; DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings, in which the same or corresponding elements are designated by the same reference numerals.

[0011] Fig. 1 is a diagram schematically showing a functional roof according to an embodiment of the present disclosure, and Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. This functional roof 1 is preferably used in a vehicle.

[0012] As shown in Figures 1 and 2, the functional roof 1 comprises a functional layer 10, a sealing layer 20, a surface protective material 30, a hard coat layer 35, a back surface protective material 40, a barrier layer 50, and a shielding portion 70.

[0013] The functional layer 10 has a predetermined function. Examples of the predetermined function include a power generation function, a light control function, and a display function. If the predetermined function is a power generation function, the functional layer 10 is made up of a solar power generation panel. If the predetermined function is a light control function, the functional layer 10 is made up of a light control film (a film whose light transmittance can be adjusted by applying a voltage). If the predetermined function is a display function, the functional layer 10 is made up of a display device (LED, organic EL, liquid crystal, etc.).

[0014] As shown in FIG. 2, the functional layer 10 is formed in a generally flat plate shape. The functional layer 10 has a first main surface 10a, a second main surface 10b, and an end surface 10c. The first main surface 10a is a surface formed on one side (upper side in FIG. 2) in the thickness direction (up-down direction in FIG. 2) of the functional layer 10. The first main surface 10a is formed to be generally flat. The second main surface 10b is a surface formed on the other side in the thickness direction of the functional layer 10. The second main surface 10b is formed to be generally flat. The end surface 10c connects the first main surface 10a and the second main surface 10b and has a shape that connects them in a ring shape.

[0015] The sealing layer 20 seals the functional layer 10. More specifically, the sealing layer 20 seals the entire first main surface 10a, the entire second main surface 10b, and the entire end surface 10c of the functional layer 10. The sealing layer 20 is made of a light-transmitting resin. The sealing layer 20 is made of, for example, ethylene vinyl acetate (EVA), polyolefin, silicone, or ionomer. The sealing layer 20 is formed by heating sheets (sealing layer-forming materials) made of the above resin in a stacked state.

[0016] The sealing layer 20 has a front surface S1, a back surface S2, and a surrounding end surface S3. The front surface S1 is provided on one side of the functional layer 10 in the thickness direction of the functional layer 10 and is constituted by one main surface of the sealing layer 20. The back surface S2 is provided on the other side of the functional layer 10 in the thickness direction of the functional layer 10 and is constituted by the other main surface of the sealing layer 20. The surrounding end surface S3 connects the front surface S1 and the back surface S2 and surrounds the periphery of the functional layer 10 in an annular shape.

[0017] The surface protection material 30 protects the surface S1 of the sealing layer 20. The surface protection material 30 is provided on one side (the upper side in FIG. 2) of the sealing layer 20 via a front-side barrier sheet 50A and a front-side adhesive layer 50C, which will be described later. The surface protection material 30 is made of a light-transmitting resin. The surface protection material 30 is made of, for example, polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), or polypropylene (PP).

[0018] The hard coat layer 35 is provided on the surface of the surface protection material 30. The hard coat layer 35 is made of a material that is harder than the material that constitutes the surface protection material 30, and covers the surface of the surface protection material 30. The hard coat layer 35 is made of a material that is optically transparent.

[0019] The back surface protective material 40 protects the back surface S2 of the sealing layer 20. The back surface protective material 40 is provided on the other side (the lower side in FIG. 2 ) of the sealing layer 20 via a back-side barrier sheet 50B and a back-side adhesive layer 50D, which will be described later. The outer shape of the back surface protective material 40 in a plan view is formed to be approximately the same as the outer shape of the back surface S2 of the sealing layer 20 in a plan view. The thickness of the back surface protective material 40 is smaller than the thickness of the surface protective material 30. The bending rigidity of the surface protective material 30 is higher than the bending rigidity of the back surface protective material 40. When the functional layer 10 is made of a light-control film, the back surface protective material 40 is made of a light-transmitting material. The back surface protective material 40 is made of, for example, polycarbonate (PC), ABS resin, or a mixture thereof.

[0020] The barrier layer 50 covers the sealing layer 20. The barrier layer 50 is made of a material (such as a resin material) that prevents the transmission of gases and water vapor. The barrier layer 50 is formed in a film shape (thin film shape). As shown in FIG. 2, the barrier layer 50 has a front-side barrier sheet 50A, a back-side barrier sheet 50B, a front-side adhesive layer 50C, and a back-side adhesive layer 50D.

[0021] The front-side barrier sheet 50A is disposed between the sealing layer 20 and the surface protection material 30. The front-side barrier sheet 50A is made of a light-transmitting material. The front-side barrier sheet 50A has a surface covering portion 51 and a front-side extension portion 54.

[0022] The surface covering portion 51 covers the entire surface S1 of the sealing layer 20. The outer shape of the surface covering portion 51 in plan view substantially corresponds to the outer shape of the surface S1 of the sealing layer 20 in plan view.

[0023] The front-side extension 54 extends from the edge of the surface covering portion 51 and is connected to the surface protection material 30. In other words, the front-side extension 54 is formed at a position that does not overlap with the sealing layer 20 in the thickness direction of the functional roof 1 (the vertical direction in FIG. 2).

[0024] The front-side adhesive layer 50C is provided over the entire surface of the front-side barrier sheet 50A, and adheres the front-side barrier sheet 50A to the surface protection material 30. The front-side adhesive layer 50C is made of a light-transmitting material (such as a synthetic resin). The outer shape of the front-side adhesive layer 50C is substantially the same as the outer shape of the front-side barrier sheet 50A.

[0025] The back barrier sheet 50B is disposed between the sealing layer 20 and the back surface protection material 40. When the functional layer 10 is made of a light control film, the back barrier sheet 50B is made of a light-transmitting material. The back barrier sheet 50B has a back surface covering portion 52 and a back surface overhanging portion 53.

[0026] The back surface covering portion 52 covers the entire back surface S2 of the sealing layer 20. The outer shape of the back surface covering portion 52 in a plan view substantially corresponds to the outer shape of the back surface S2 of the sealing layer 20 in a plan view.

[0027] The rear-side protrusion 53 protrudes from the edge of the rear surface covering portion 52. The rear-side protrusion 53 is spaced apart from the rear surface protective material 40. The rear-side protrusion 53 is connected to the front-side barrier sheet 50A while covering the surrounding edge surface S3 of the sealing layer 20. The rear-side protrusion 53 has an edge surface covering portion 53a and a rear-side sheet edge portion 53b.

[0028] The end surface covering portion 53a is connected to the edge of the back surface covering portion 52 and covers the surrounding end surface S3 of the sealing layer 20. A space may be formed between the end surface covering portion 53a and the surrounding end surface S3.

[0029] The back sheet end 53b is connected to the front barrier sheet 50A. In this embodiment, the back sheet end 53b is connected to the front extension .

[0030] The back-side adhesive layer 50D is provided over the entire back surface of the back-side barrier sheet 50B, and adheres the back-side barrier sheet 50B to the back surface protective material 40. When the functional layer 10 is made of a light-controlling film, the back-side adhesive layer 50D is made of a light-transmitting material (such as a synthetic resin). The outer shape of the back-side adhesive layer 50D is substantially the same as the outer shape of the back-side barrier sheet 50B.

[0031] The shielding portion 70 is made of a black material (ceramic, etc.). In this embodiment, the shielding portion 70 is provided on the back surface of the surface protection material 30. More specifically, the surface protection material 30 has a flange portion 32 that protrudes outward from a portion that overlaps with the sealing layer 20 in the thickness direction, and the shielding portion 70 is provided on the back surface of the flange portion 32.

[0032] Next, a method for manufacturing the functional roof 1 will be described with reference to Fig. 3. This manufacturing method includes a laminate forming step, an integration step, and a heat pressing step.

[0033] In the laminate formation step, a laminate is formed by laminating the surface protective material 30, the front barrier sheet 50A, the multiple sealing layer-forming materials that constitute the sealing layer 20 and the functional layers 10 arranged within the multiple sealing layer-forming materials, the back barrier sheet 50B, and the back surface protective material 40. More specifically, in the laminate formation step, the surface protective material 30 provided with the hard coat layer 35, the front adhesive layer 50C, the front barrier sheet 50A, the multiple sealing layer-forming materials and functional layers 10, the back barrier sheet 50B, the back adhesive layer 50D, and the back surface protective material 40 are laminated to form the laminate.

[0034] In the laminate formation step, the surface protection material 30 provided with the hard coat layer 35, the front-side adhesive layer 50C, and the front-side barrier sheet 50A may be heated and integrated before the formation of the laminate. Similarly, the back surface protection material 40 and the back surface covering portion 52 of the back-side barrier sheet 50B may be heated and integrated before the formation of the laminate.

[0035] In the integration process, the laminate is heated to soften the sealing layer-forming materials to form the sealing layer 20 that seals the functional layer 10, and the front-side barrier sheet 50A and the back-side barrier sheet 50B are connected to each other to form the barrier layer 50 that covers the sealing layer 20. As shown in FIG. 3 , in the integration process, for example, the laminate is placed on a heated plate-like member 101 and covered with a rubber sheet 102. Then, the space between the plate-like member 101 and the sheet 102 is evacuated to integrate the laminate. In this integration process, the front-side extension portion 54 of the front-side barrier sheet 50A and the back-side sheet end portion 53b of the back-side barrier sheet 50B are connected to each other. This forms an end surface covering portion 53a that covers the surrounding end surface S3 of the sealing layer 20.

[0036] The heat pressing step is performed after the integration step. In the heat pressing step, the hard coat layer 35, the surface protective material 30, the sealing layer 20, the barrier layer 50, and the back surface protective material 40 are pressed while being heated so that they are curved convexly toward one side in the stacking direction, more specifically, from the back surface protective material 40 toward the surface protective material 30.

[0037] As described above, in the functional roof 1 of this embodiment, the barrier layer 50 has a surface coating portion 51, a back surface coating portion 52, and an end surface coating portion 53a, thereby suppressing the generation of bubbles in the sealing layer 20 due to the intrusion of gas or water vapor into the sealing layer 20.

[0038] Furthermore, since the rear protrusion 53 is spaced apart from the rear surface protection material 40, the outer shape of the rear surface protection material 40 in a planar view can be reduced to approximately the same size as the outer shape of the rear surface S2 of the sealing layer 20 in a planar view.

[0039] Next, a modification of the above embodiment will be described.

[0040] (First Modification) 4, the back-side sheet end portion 53b may be disposed between the surface covering portion 51 and the sealing layer 20. In this case, the front-side extension portion 54 may be omitted, and the front-side barrier sheet 50A may be composed only of the surface covering portion 51. In this example, the front-side barrier sheet 50A and the back-side barrier sheet 50B are connected to each other via the back-side adhesive layer 50D, thereby improving airtightness.

[0041] (Second Modification) 5, the back-side sheet end portion 53b may be disposed between the surface covering portion 51 and the sealing layer 20, and the shielding portion 70 may be provided on the back surface of the back surface protection material 40. In this example, the front-side extension portion 54 may also be omitted, and the front-side barrier sheet 50A may be composed only of the surface covering portion 51. Also, in this example, the flange portion 32 of the surface protection material 30 may be omitted.

[0042] (Third Modification) 6, the rear-side overhang 53 may be omitted from the rear-side barrier sheet 50B, and the front-side barrier sheet 50A may have a front-side overhang 55 instead of the front-side extension 54. The front-side overhang 55 overhangs the edge of the surface covering portion 51 and is spaced apart from the surface protection material 30. The front-side overhang 55 is connected to the rear-side barrier sheet 50B while covering the surrounding edge surface S3. The front-side overhang 55 has an edge covering portion 55a and a front-side sheet edge portion 55b.

[0043] The end surface covering portion 55a is connected to the edge of the surface covering portion 51 and covers the surrounding end surface S3 of the sealing layer 20. A space may be formed between the end surface covering portion 55a and the surrounding end surface S3.

[0044] The front-side sheet end portion 55b is connected to the back-side barrier sheet 50B. In this example, the back surface protection material 40 has a flange portion 42 that protrudes outward from the portion that overlaps the sealing layer 20 in the thickness direction, and the back-side barrier sheet 50B has a back-side extension portion 56 that extends from the edge of the back surface covering portion 52 and is connected to the flange portion 42, and the front-side sheet end portion 55b is connected to the back-side extension portion 56.

[0045] (Fourth Modification) 7, the front-side sheet end portion 55b may be disposed between the back-side covering portion 52 and the sealing layer 20. In this case, the back-side extension portion 56 may be omitted, and the back-side barrier sheet 50B may be composed only of the back-side covering portion 52. In this example, the front-side barrier sheet 50A and the back-side barrier sheet 50B are connected to each other via the front-side adhesive layer 50C, thereby improving airtightness as in the first modified example.

[0046] (Fifth Modification) 8, the front sheet end portion 55b may be disposed between the back surface covering portion 52 and the sealing layer 20, and the shielding portion 70 may be provided on the back surface of the back surface protection material 40. In this case, the back surface extension portion 56 may also be omitted, and the back surface barrier sheet 50B may be composed only of the back surface covering portion 52. Also, in this example, the flange portion 32 of the surface protection material 30 may be omitted.

[0047] [Aspect] It will be appreciated by those skilled in the art that the exemplary embodiments described above are examples of the following aspects.

[0048] (Aspect 1) a functional layer having a predetermined function; a sealing layer that seals the functional layer, the sealing layer having a front surface, a back surface, and a surrounding end surface that connects the front surface and the back surface and annularly surrounds the periphery of the functional layer; a surface protection material made of a light-transmitting resin and protecting the surface of the sealing layer; a back surface protection material that protects the back surface of the sealing layer; a barrier layer covering the sealing layer, The barrier layer is a front barrier sheet disposed between the sealing layer and the surface protection material; a backside barrier sheet disposed between the sealing layer and the backside protection material, the front barrier sheet includes a surface covering portion that covers the entire surface of the sealing layer, the rear barrier sheet includes a rear covering portion that covers the entire rear surface of the sealing layer, A functional roof, wherein the front barrier sheet has a front overhang that extends from the edge of the surface covering portion and is spaced apart from the surface protective material, and the front overhang is connected to the back barrier sheet in a state where it covers the surrounding edge surface, or the back barrier sheet has a back overhang that extends from the edge of the back covering portion and is spaced apart from the back protective material, and the back overhang is connected to the front barrier sheet in a state where it covers the surrounding edge surface.

[0049] In this functional roof, the barrier layer has a surface coating portion, a back coating portion, and a front-side protrusion portion or a back-side protrusion portion, thereby suppressing the generation of bubbles in the sealing layer due to the intrusion of gas or water vapor into the sealing layer.

[0050] (Aspect 2) the rear barrier sheet has the rear overhang, The rear protrusion is an end surface covering portion that covers the surrounding end surface; a rear sheet edge connected to the front barrier sheet.

[0051] (Aspect 3) the front-side barrier sheet has a front-side extension portion that extends from the edge portion of the surface covering portion and is connected to the surface protective material, A functional roof according to aspect 2, wherein the rear sheet end is connected to the front extension.

[0052] (Aspect 4) A functional roof according to aspect 2, wherein the back sheet end is disposed between the surface covering portion and the sealing layer.

[0053] (Aspect 5) the front-side barrier sheet has the front-side overhanging portion, The front side protrusion portion is an end surface covering portion that covers the surrounding end surface; a front sheet edge connected to the back barrier sheet.

[0054] (Aspect 6) the backside barrier sheet has a backside extension extending from the edge of the backside covering portion and connected to the backside protective material; A functional roof as described in aspect 5, wherein the front sheet end is connected to the back extension.

[0055] (Aspect 7) A functional roof according to aspect 5, wherein the front sheet end is disposed between the back covering portion and the sealing layer.

[0056] (Aspect 8) A functional roof described in any of aspects 1 to 7, wherein the surface protective material, the surface covering portion, the sealing layer, the back surface covering portion and the back surface protective material have a shape that is curved so as to be convex in the direction from the back surface protective material toward the surface protective material.

[0057] (Aspect 9) A functional roof according to any one of aspects 1 to 8, wherein the bending stiffness of the surface protective material is higher than the bending stiffness of the back surface protective material.

[0058] (Aspect 10) A method for manufacturing a functional roof comprising: a functional layer having a predetermined function; a sealing layer sealing the functional layer; a surface protective material made of a light-transmitting resin and protecting a surface of the sealing layer; a back protective material protecting a back surface of the sealing layer; and a barrier layer covering the sealing layer, wherein the barrier layer has a front barrier sheet disposed between the sealing layer and the surface protective material, and a back barrier sheet disposed between the sealing layer and the back protective material, a laminate formation step of forming a laminate by laminating the surface protective material, the front barrier sheet, a plurality of sealing layer-forming materials constituting the sealing layer, the functional layer disposed within the plurality of sealing layer-forming materials, the back barrier sheet, and the back surface protective material; an integration process in which the laminate is heated to soften the sealing layer-forming materials to form the sealing layer that seals the functional layer, and the front-side barrier sheet and the back-side barrier sheet are connected to each other to form the barrier layer that covers the sealing layer; A method for manufacturing a functional roof, comprising: after the integration process, a heat pressing process in which the surface protection material, the sealing layer, the barrier layer and the back protection material are pressed while being heated so that they assume a curved shape that is convex toward one side in the stacking direction.

[0059] (Aspect 11) In the laminate formation step, the laminate is formed to further include a hard coat layer made of a material having a higher hardness than a material constituting the surface protective material and covering the surface of the surface protective material, Aspect 11. The method for manufacturing a functional roof according to aspect 10, wherein in the heat pressing step, the hard coat layer, the surface protection material, the sealing layer, the barrier layer, and the back surface protection material are pressed while being heated.

[0060] It should be noted that the embodiments disclosed herein are illustrative in all respects and should not be considered limiting. The scope of the present invention is defined by the claims rather than the description of the above embodiments, and further includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0061] 1 functional roof, 10 functional layer, 10a first main surface, 10b second main surface, 10c end surface, 20 sealing layer, 30 surface protective material, 32 flange portion, 40 back surface protective material, 42 flange portion, 50 barrier layer, 50A front barrier sheet, 50B back barrier sheet, 50C front adhesive layer, 50D back adhesive layer, 51 front covering portion, 52 back covering portion, 53 back protrusion, 53a end covering portion, 53b back sheet end, 54 front extension, 55 front protrusion, 55a end covering portion, 55b front sheet end, 56 back extension, 70 shielding portion, 101 plate-shaped member, 102 sheet, S1 front surface, S2 back surface, S3 surrounding end surface.

Claims

1. a functional layer having a predetermined function; a sealing layer that seals the functional layer, the sealing layer having a front surface, a back surface, and a surrounding end surface that connects the front surface and the back surface and annularly surrounds the periphery of the functional layer; a surface protection material made of a light-transmitting resin and protecting the surface of the sealing layer; a back surface protection material that protects the back surface of the sealing layer; a barrier layer covering the sealing layer, The barrier layer is a front barrier sheet disposed between the sealing layer and the surface protection material; a backside barrier sheet disposed between the sealing layer and the backside protection material, the front barrier sheet includes a surface covering portion that covers the entire surface of the sealing layer, the rear barrier sheet includes a rear covering portion that covers the entire rear surface of the sealing layer, A functional roof, wherein the front barrier sheet has a front overhang that extends from the edge of the surface covering portion and is spaced apart from the surface protective material, and the front overhang is connected to the back barrier sheet in a state where it covers the surrounding edge surface, or the back barrier sheet has a back overhang that extends from the edge of the back covering portion and is spaced apart from the back protective material, and the back overhang is connected to the front barrier sheet in a state where it covers the surrounding edge surface.

2. the rear barrier sheet has the rear overhang, The rear protrusion is an end surface covering portion that covers the surrounding end surface; The functional roof of claim 1 , further comprising a rear sheet edge connected to the front barrier sheet.

3. the front-side barrier sheet has a front-side extension portion that extends from the edge portion of the surface covering portion and is connected to the surface protective material, The functional roof of claim 2 , wherein the rear sheet end is connected to the front extension.

4. The functional roof according to claim 2 , wherein the rear sheet edge is disposed between the surface covering portion and the sealing layer.

5. the front-side barrier sheet has the front-side overhanging portion, The front side protrusion portion is an end surface covering portion that covers the surrounding end surface; The functional roof of claim 1 , further comprising a front sheet edge connected to the back barrier sheet.

6. the backside barrier sheet has a backside extension extending from the edge of the backside covering portion and connected to the backside protective material; The functional roof according to claim 5 , wherein the top sheet end is connected to the bottom extension.

7. The functional roof according to claim 5 , wherein the front sheet edge is disposed between the back covering portion and the sealing layer.

8. A functional roof as described in any one of claims 1 to 7, wherein the surface protective material, the surface covering portion, the sealing layer, the back surface covering portion and the back surface protective material have a shape that is curved so as to be convex in the direction from the back surface protective material toward the surface protective material.

9. The functional roof according to claim 1 , wherein the bending stiffness of the front surface protective material is higher than the bending stiffness of the rear surface protective material.

10. A method for manufacturing a functional roof comprising: a functional layer having a predetermined function; a sealing layer sealing the functional layer; a surface protective material made of a light-transmitting resin and protecting a surface of the sealing layer; a back protective material protecting a back surface of the sealing layer; and a barrier layer covering the sealing layer, wherein the barrier layer has a front barrier sheet disposed between the sealing layer and the surface protective material, and a back barrier sheet disposed between the sealing layer and the back protective material, a laminate formation step of forming a laminate by laminating the surface protective material, the front barrier sheet, a plurality of sealing layer-forming materials constituting the sealing layer, the functional layer disposed within the plurality of sealing layer-forming materials, the back barrier sheet, and the back surface protective material; an integration process in which the laminate is heated to soften the sealing layer-forming materials to form the sealing layer that seals the functional layer, and the front-side barrier sheet and the back-side barrier sheet are connected to each other to form the barrier layer that covers the sealing layer; A method for manufacturing a functional roof, comprising: after the integration process, a heat pressing process in which the surface protection material, the sealing layer, the barrier layer and the back protection material are pressed while being heated so that they assume a curved shape that is convex toward one side in the stacking direction.

11. In the laminate formation step, the laminate is formed to further include a hard coat layer made of a material having a higher hardness than a material constituting the surface protective material and covering the surface of the surface protective material, The method for manufacturing a functional roof according to claim 10, wherein in the heat pressing step, the hard coat layer, the surface protective material, the sealing layer, the barrier layer, and the back surface protective material are pressed while being heated.

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