Compartment penetration treatment structure, compartment penetration treatment material, and construction method for compartment penetration treatment structure

Abstract

To provide a section penetration treatment structure, a section penetration treatment structure construction method and a section penetration treatment material which are capable of reducing variation in fire resistance performance and enhancing fire resistance performance.SOLUTION: A section penetration treatment structure 10 causes a section penetration part 15 to have a fire-resistant structure, where the section penetration part is formed in a partition part 11 of a building and allows an elongate insert 21 to be inserted therethrough. The structure comprises a sheet member 3 that closes at least a portion of a gap between the insert 21 and an opening 13C of the section penetration part 15 provided in the partition part 11. The sheet member 3 is a laminate of at least 3 layers including base materials 30A, 30B and a thermoexpandable refractory material layer 31A.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a compartment penetration structure formed in a partition section of a building or the like, a compartment penetration material for forming the compartment penetration structure, and a construction method for the compartment penetration structure. [Background technology]

[0002] In buildings such as apartment complexes, office buildings, and schools, compartment penetrations are often installed in partitions such as walls to allow the passage of long objects such as cables and pipes. Compartment penetrations are required to be constructed with fire prevention measures (fire-resistant construction) to prevent the spread of fire to other compartments in the event of a fire in one compartment. Partitions are generally hollow walls, consisting of two walls with a hollow space between them.

[0003] One known method for making compartment penetrations fireproof is to fill the gap between the long insert and the through hole with an unshaped filler such as fireproof putty. When an unshaped filler is used, a tubular member made of fireproof material may also be placed between the inside of the through hole in each wall and the insert (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6150933 [Patent Document 2] Patent No. 6348320 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when unshaped filler is used for fireproofing of compartment penetrations, there is variation among workers, and sufficient fire resistance may not be achieved. Also, when installing fireproofing materials and their accessories within the structure, it is sometimes unclear to what extent they have been installed (quantity, thickness, length, etc.), or it is difficult to determine whether they have been installed according to regulations. Therefore, in order to confirm whether fireproofing materials have been installed according to regulations, it is necessary to destroy the compartment penetration structure and check the internal structure.

[0006] Additionally, to reduce variations among workers, there are kits that integrate predetermined quantities and sizes of components, but these tend to have a large number of components, which can easily lead to components being lost or forgotten to be installed, and there is also the problem of a large amount of waste being generated because each kit is individually packaged.

[0007] Furthermore, in compartment penetration structures in which long inserts such as cables and piping are inserted, if the insert is moved after the compartment penetration structure is applied, the fire-resistant material installed inside may be displaced from its original position. External forces such as earthquakes may also cause the fire-resistant material to be displaced from its original position. Furthermore, if the fire-resistant material expands unevenly rather than uniformly, it may be displaced from its original position or fall off. Displacement of the fire-resistant material from its original position makes it difficult to achieve the fire-resistant performance desired for the compartment penetration fire-resistant structure.

[0008] Therefore, the present invention aims to provide a compartment penetration treatment structure, a construction method for a compartment penetration treatment structure, and a compartment penetration treatment material that can reduce variation in fire resistance performance and improve fire resistance performance. [Means for solving the problem]

[0009] The present invention has been made to solve the above problems, and the gist of the present invention is as follows. [1] A compartment penetration structure that is formed in a partition of a building and has a compartment penetration section through which a long insert is inserted, the compartment penetration structure having a fire-resistant structure, and that includes a sheet-like member that blocks at least a portion of the gap between the opening of the compartment penetration section provided in the partition and the insert, and the sheet-like member is a laminate of at least three layers of a base material and a heat-expandable fire-resistant material layer. [2] The compartment penetration processing structure described in [1], wherein the sheet-like member is formed by alternately stacking at least three layers of a base material and a heat-expandable fire-resistant material layer. [3] The compartment penetration structure described in [1] or [2], wherein the sheet-like member is a laminate of a plurality of the base materials and a plurality of the fire-resistant material layers. [4] A compartment penetration processing structure described in any one of [1] to [3], wherein the fire-resistant material layer having adhesive properties or the fire-resistant material layer having an adhesive layer is arranged in contact with the partition portion. [5] The compartment penetration structure according to any one of [1] to [4], wherein the substrate is disposed on the outermost layer on the opposite side from the partition portion. [6] The compartment penetration structure according to any one of [1] to [5], wherein nothing is provided inside the compartment penetration part other than the insert. [7] A compartment penetration processing structure described in any one of [1] to [6], wherein the sheet-like member is fixed to the partition portion by at least one of the adhesive fire-resistant material layer or adhesive layer arranged on the inside and a fixing member installed from the outside. [8] The compartment penetration structure according to any one of [1] to [7], further comprising a cover member that covers the sheet-like member. [9] The compartment penetration processing structure described in [8], wherein the cover member is fixed to at least one of the insert and the sheet-like member by at least one of the adhesive fire-resistant material layer or adhesive layer arranged on the inside, a string-like member or adhesive tape wound from the outside, and a fixing member installed from the outside.

[10] A compartment penetration processing structure described in [8] or [9], wherein the sheet-like member is covered with the cover member, and at least one of the end face and the surface of the sheet-like member is visible from the outside.

[11] The compartment penetration structure according to any one of [8] to

[10] , wherein there is a gap between the sheet-like member and the cover member.

[12] The compartment penetration structure according to any one of [1] to

[11] , wherein compartment penetration materials comprising the sheet-like members are provided on both sides of the partition.

[13] The compartment penetration structure according to any one of [1] to

[12] , wherein the sheet-like member is in contact with the inserter.

[14] The compartment penetration structure according to any one of [1] to

[13] , wherein the sheet-like member has a sound absorbing layer.

[15] The compartment penetration structure according to any one of [1] to

[14] , wherein the sheet-like member has a sound-insulating layer.

[16] The compartment penetration structure according to any one of [8] to

[15] , wherein the cover member has a sound absorbing layer.

[17] The compartment penetration structure according to any one of [8] to

[16] , wherein the cover member has a sound-insulating layer.

[17] A compartment penetration processing structure formed in a partition of a building and having a compartment penetration part into which a long penetrating body is inserted, the compartment penetration part having a fire-resistant structure, a sheet-like member that closes at least a part of a gap between the opening of the compartment penetration portion provided in the partition portion and the insertion body; The sheet-like member has a compartment penetration structure in which at least three layers of a base material and a heat-expandable fire-resistant material layer are laminated.

[18] A compartment penetration treatment material used to make a compartment penetration portion formed in a partition of a building and into which a long insert is inserted, a fire-resistant structure, the compartment penetration treatment material comprising a sheet-like member that blocks at least a part of the gap between the opening of the compartment penetration portion provided in the partition and the insert, the sheet-like member being a laminate of at least three layers of a base material and a heat-expandable fire-resistant material layer.

[19] The compartment penetration treatment material described in

[18] , wherein the sheet-like member is formed by alternately laminating at least three layers of a base material and a thermally expandable fire-resistant material layer.

[20] A construction method for a compartment penetration processing structure that is formed in a partition of a building and has a compartment penetration portion through which a long insert is inserted, and that has a fire-resistant structure, the construction method for a compartment penetration processing structure comprising a step of installing a sheet-like member so as to block at least a part of the gap between the opening of the compartment penetration portion provided in the partition and the insert, the sheet-like member being a laminate of at least three layers of a base material and a heat-expandable fire-resistant material layer.

[21] A construction method for a compartment penetration treatment structure described in

[20] , in which the sheet-like member is made of at least three layers of a base material and a thermally expandable fire-resistant material layer laminated alternately. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a compartment penetration treatment structure, a construction method for a compartment penetration treatment structure, and a compartment penetration treatment material that can reduce variation in fire resistance performance and improve fire resistance performance. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view showing a state before a compartment penetration treatment material is installed in a compartment penetration treatment structure according to a first embodiment of the present invention. FIG. [Figure 2] 1 is a cross-sectional view showing a compartment penetration structure according to a first embodiment of the present invention. [Figure 3] 1 is a schematic cross-sectional view showing the configuration of a sheet-like member of a compartment penetration structure according to a first embodiment of the present invention. [Figure 4] 1 is a schematic cross-sectional view showing the configuration of a sheet-like member of a compartment penetration structure according to a first embodiment of the present invention. [Figure 5] FIG. 10 is a cross-sectional view showing a compartment penetration structure according to another embodiment of the first embodiment of the present invention. [Figure 6] FIG. 10 is a cross-sectional view showing a compartment penetration structure according to another embodiment of the first embodiment of the present invention. [Figure 7] FIG. 10 is a cross-sectional view showing a compartment penetration structure according to another embodiment of the first embodiment of the present invention. [Figure 8]FIG. 10 is a perspective view showing another form of a cover member in a compartment penetration processing structure according to a modified example of the first embodiment of the present invention. [Figure 9] FIG. 10 is a cross-sectional view showing a compartment penetration structure according to a modified example of the first embodiment of the present invention. [Figure 10] FIG. 10 is a perspective view showing a state before a compartment penetration treatment material is installed in a compartment penetration treatment structure according to a second embodiment of the present invention. [Figure 11] FIG. 4 is a cross-sectional view showing a compartment penetration structure according to a second embodiment of the present invention. [Figure 12] FIG. 10 is a perspective view showing a state before a compartment penetration treatment material is installed in a compartment penetration treatment structure according to a third embodiment of the present invention. [Figure 13] FIG. 10 is a cross-sectional view showing a compartment penetration structure according to a third embodiment of the present invention. [Figure 14] FIG. 10 is a schematic cross-sectional view showing the configuration of a sheet-like member of a compartment penetration structure according to a third embodiment of the present invention. [Figure 15] FIG. 10 is a cross-sectional view showing another modified example of the compartment penetration processing structure according to the first embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] The present invention will be described in more detail below using embodiments.

[0013] [First embodiment] The compartment penetration structure according to the first embodiment of the present invention is a compartment penetration structure, as shown in FIG. 1, which is formed in a partition 11 of a building and has a compartment penetration portion 15, through which a long penetrating body 21 is inserted, having a fire-resistant structure.

[0014] The partition 11 in the compartment penetration structure of the present invention is a component that separates compartments (first compartment A and second compartment B) in the wall surface of a building, and has a compartment penetration 15 that penetrates from one outer surface 11A of the partition 11 to the other outer surface 11B. The partition 11 shown in FIG. 1 is a hollow wall and is composed of two wall materials (partition materials) 12A and 12B arranged with a gap (hollow portion 13) between them. Therefore, the compartment penetration 15 is composed of a through hole 13A formed in one wall material 12A, a through hole 13B formed in the other wall material 12B, and the hollow portion 13 between them. The outer surface of one wall material 12A forms the outer surface 11A of the partition 11, and the outer surface of the other wall material 12B forms the outer surface 11B of the partition 11. The through holes 13A and 13B may be, for example, circular, elliptical, or similar shapes. The through holes 13A and 13B on the outer surfaces 11A and 11B respectively constitute openings 13C and 13D of the compartment through-hole 15 provided in the partition 11.

[0015] In this specification, the components (in this embodiment, the sheet-like members 3 and the fixing members for fixing these, etc.) that are installed in the compartment penetration portion 15 to form the compartment penetration processing structure 10 are sometimes collectively referred to as compartment penetration processing materials. In addition, the following describes the configuration of the compartment penetration processing structure on one opening 13C side of the partition section 11, but in this embodiment, the configuration of the compartment penetration processing structure on the other opening 13D side is similar, so the description thereof will be omitted.

[0016] The compartment penetration structure 10 according to the first embodiment comprises a sheet-like member 3 and a cover member 5 as compartment penetration treatment materials, and the sheet-like member 3 has at least a fire-resistant material as described below.

[0017] [Sheet-like member] As shown in Fig. 1, the sheet-shaped member 3 has slits 32 through which the inserter 21 is inserted, and at least one of the slits 32 extends to the outer edge of the sheet-shaped member 3. The slits 32 are formed by cutting. The inserter 21 can be inserted into the sheet-shaped member 3 through the slits 32 extending to the outer edge of the sheet-shaped member 3. The slits 32 may have a form including a hole through which the inserter 21 is inserted and a slit 32 extending from the hole to the outer edge of the sheet-shaped member 3.

[0018] As shown in Fig. 2, the sheet-like member 3 with the insert 21 inserted through the slit 32 is placed on the outer surface 11A from the outside of the partition 11 so as to cover the gap 13E between the opening 13C and the insert 21, thereby closing the gap 13E between the opening 13C and the insert 21 with the sheet-like member 3. The sheet-like member 3 is preferably placed so as to be in contact with both the outer surface 11A of the partition 11 and the outer periphery of the insert 21. By placing the sheet-like member 3 in contact with the insert 21 and the partition 11, the opening 13C of the partition 11 can be closed, improving and maintaining fire resistance.

[0019] In this embodiment, as shown in Figures 3(a) to 3(e), the sheet-shaped member 3 has at least three layers of substrates and thermally expandable fireproof material layers laminated alternately. Specifically, as shown in Figure 3(a), the sheet-shaped member 3 may have three layers of substrates 30A, 30B and fireproof material layers 31A laminated alternately, or as shown in Figure 3(b), the sheet-shaped member 3 may have three layers of substrates 30A and fireproof material layers 31A, 31B laminated alternately. The sheet-shaped member 3 is not limited to a three-layer structure, and may have four layers of substrates 30A, 30B and fireproof material layers 31A, 31B laminated alternately, as shown in Figure 3(c).

[0020] Furthermore, as long as the sheet-like member 3 has the substrate / fireproof material layer / substrate or fireproof material layer / substrate / fireproof material layer in this order, the substrate and the fireproof material layer do not need to be alternately arranged one by one. The same types of layers may be continuously stacked, such as substrate / substrate or fireproof material layer / fireproof material layer. For example, as shown in FIG. 3(d), substrates 30A and 30B may be continuously stacked, and substrates 30B and 30C and fireproof material layers 31A may be alternately stacked. Furthermore, as shown in FIG. 3(e), the sheet-like member 3 may have any number of layers, and may have a plurality of substrates 30A,... 30Y, 30Z and a plurality of fireproof material layers 31A,... 31Y, 31Z alternately stacked in multiple layers.

[0021] In the present invention, at least three layers of substrates and thermally expandable fireproof layers are alternately laminated. This allows the fireproof layers to be properly supported by the substrate when the sheet-shaped member 3 is heated, allowing heat to be evenly distributed, resulting in the fireproof layers expanding approximately uniformly and providing good fire resistance. Furthermore, the approximately uniform expansion of the fireproof layers of the sheet-shaped member 3 allows the fireproof layers to maintain their proper position and not shift, ensuring stable fire resistance. Furthermore, by using the sheet-shaped member 3, a fireproof structure can be formed without the need to place fillers such as fireproof putty or rock wool inside the compartment penetration 15, eliminating variations in the placement depending on the worker. Furthermore, when multiple fire-resistant layers are laminated on the sheet-shaped member 3, the fire-resistant layer on the expanded partition 11 side is embedded inside the gap 13E, preventing the sheet-shaped member 3 from separating from the partition 11 when it expands, making the above-mentioned displacement less likely to occur. On the other hand, the fire-resistant layer located away from the partition 11 expands evenly as described above, and the expansion residue can appropriately prevent the spread of fire.

[0022] When the sheet-shaped member 3 has multiple fire-resistant layers, it is preferable that the expansion ratio of the fire-resistant layer farthest from the outer surface 11A of the partition 11 is higher than the expansion ratio of the fire-resistant layer closest to the outer surface 11A of the partition 11. That is, in the sheet-shaped member 3 in Figures 3(b) and (c), it is preferable that the expansion ratio of the fire-resistant layer 31B is higher than the expansion ratio of the fire-resistant layer 31A. The expansion ratio of the fire-resistant layer can be controlled, for example, by selecting the amount and type of thermally expandable material. In this way, when the expansion ratio of the fire-resistant material layer on the partition 11 side is low, the strength of the expansion residue is maintained high, the fire-resistant material layer embedded inside the gap 13E properly supports the sheet-shaped member 3, and displacement becomes even less likely to occur. In addition, the fire-resistant material layer located away from the partition 11 expands sufficiently when heated, and is more likely to exhibit higher fire resistance performance.

[0023] In addition, when there are three or more fire-resistant layers, it is preferable to make the expansion ratio of the fire-resistant layers further from the outer surface 11A of the partition 11 higher in order to allow the fire-resistant layers further from the outer surface 11A of the partition 11 to expand more uniformly. Furthermore, in the above multilayer structure, adjacent layers may be bonded together using a known adhesive, and therefore, in each of the laminated structures, an adhesive layer may be provided between each of the layers. In the multilayer structure, the sheet-like member 3 may have the same layer structure throughout, or may have a partially different structure. For example, the layer structure between the substrate and the fireproof material layer may be partially changed.

[0024] The fire-resistant material layer used in the sheet-shaped member 3 is a thermally expandable member that expands when heated. The thermally expandable member prevents the spread of fire by expanding in the event of a fire. The thermally expandable member is preferably formed from a thermally expandable resin composition, as described below. The thickness of each fire-resistant material layer is not particularly limited, but is, for example, 0.1 to 15 mm, and preferably 0.5 to 8 mm. When the fire-resistant material layer has a thickness equal to or less than these upper limit values, flexibility is imparted to the sheet-shaped member 3. When the fire-resistant material layer has a thickness equal to or greater than the lower limit values, fire resistance is more easily ensured.

[0025] The substrate used in the sheet-like member 3 supports the fire-resistant material layer and transfers heat evenly to the fire-resistant material layer. Examples of the substrate include metal foils such as aluminum foil and copper foil, metal foil composites such as glass cloth and composites of metal foil and glass cloth such as aluminum-glass cloth, paper, cloth, and resin film. Among these, from the viewpoint of fire resistance, it is preferable that the substrate is made of a non-combustible material, and specific examples include metal foil and metal foil composites. Non-combustible materials are those defined in the Building Standards Act and the Enforcement Order of the Building Standards Act. The substrate is preferably disposed in the outermost layer located on the opposite side from the partition portion 11. By disposing the substrate in the outermost layer of the sheet-like member 3, the fire-resistant material layer disposed on the inside can be well supported and heat can be evenly transferred to the fire-resistant material layer, thereby enabling the fire-resistant material layer to expand more effectively and approximately uniformly. The thickness of each substrate is not particularly limited, but is, for example, 0.01 to 1 mm, and preferably 0.05 to 0.5 mm. When the noncombustible material layer has a thickness equal to or less than these upper limits, flexibility is imparted to the sheet-like member 3. When the noncombustible material layer has a thickness equal to or greater than the lower limits, fire resistance is more easily ensured.

[0026] As shown in FIG. 4(a), the sheet-shaped member 3 preferably has an adhesive fireproof material layer 31A on its outermost surface, or as shown in FIG. 4(b), has an adhesive fireproof material layer 31A with an adhesive layer 33 on its outermost surface. With this configuration, the sheet-shaped member 3 may be disposed in contact with the outer surface 11A of the partition 11 via an adhesive fireproof material layer or adhesive layer disposed on the inner side (i.e., the partition 11 side). This configuration allows the sheet-shaped member 3 to be fixed to the partition 11 without using a fixing member separate from the sheet-shaped member 3. Furthermore, by imparting adhesiveness to the fireproof material layer itself, an adhesive layer is not required, further simplifying the configuration of the sheet-shaped member 3. When the sheet-shaped member 3 has an adhesive fireproof material layer or adhesive layer on its outermost surface, a release sheet may be attached to the outermost surface. The release sheet is preferably peeled off from the outermost surface during use. The fire-resistant layer can be made adhesive by forming it from butyl rubber or the like. The pressure-sensitive adhesive layer is preferably formed from a pressure-sensitive adhesive, and examples of the pressure-sensitive adhesive that can be used include acrylic pressure-sensitive adhesives, urethane pressure-sensitive adhesives, rubber pressure-sensitive adhesives, and silicone resin pressure-sensitive adhesives. The pressure-sensitive adhesive layer may be non-flammable, semi-non-flammable, or flame-retardant, and a flame retardant may be blended into the pressure-sensitive adhesive used. The thickness of the pressure-sensitive adhesive layer is, for example, 5 to 400 μm, and preferably 10 to 150 μm. Furthermore, the sheet-like member 3 can be fixed to the outer surface 11A of the partition 11 by fixing members such as tackers and screws that are separate from the sheet-like member 3. These fixing members are preferably installed on the outside of the sheet-like member 3 (i.e., on the opposite side from the partition 11). Of course, the sheet-like member 3 may be fixed to the partition portion 11 by a combination of two or more of these.

[0027] The thickness of the sheet-like member 3 is not particularly limited, but is, for example, 0.1 to 20 mm, and preferably 0.5 to 10 mm.

[0028] [Cover member] The cover member 5 is provided so as to be connected to the sheet-like member 3, and is a member that covers the sheet-like member 3 provided in the partition section 11. For example, as shown in FIG. 1, four cover members 5 are used so as to be connected to the four side edges of the sheet-like member 3, forming four extension portions that extend outward from the sheet-like member 3, and as shown in FIG. 2, they cover the sheet-like member 3 provided in the partition section 11. Examples of means by which the cover member 5 is provided so as to be connected to at least a portion of the sheet-like member 3 include means for fixing by known fixing means such as an adhesive, a pressure-sensitive adhesive, an adhesive tape, or a fixing member such as a tacker or a screw. Here, the adhesive, the pressure-sensitive adhesive, and the adhesive tape are preferably made of a non-combustible material, a semi-non-combustible material, or a flame-retardant material, and it is preferable to blend a flame retardant or the like into the adhesive, the pressure-sensitive adhesive, or the like. The cover member 5 is sheet-shaped and can be deformed, so that it can easily cover the sheet-shaped member 3.

[0029] As shown in FIG. 1, the portion of the cover member 5 that covers the opening 13C of the compartment penetration portion 15 surrounds the penetrating body 21 so as to be in contact with it, and is fixed to the penetrating body 21 by a string-like member 22 wound around it from the outside. The string-like member 22 may be any bendable member, and is preferably a wire member including a wire. The wire member may be a metal wire alone, or a resin-coated wire such as Nejirikko (registered trademark) in which a metal wire is coated with resin, or a wire and fiber entangled member such as a maul. When a wire member is used, the cover member 5 can be fixed to the penetrating body 21 simply by twisting or twisting it. In another embodiment (not shown), the cover member 5 has a portion covering the opening 13C of the compartment penetration portion 15 that surrounds the inserter 21 so as to be in contact with the inserter 21, and is fixed to the inserter 21 by adhesive tape wound from the outside (i.e., the side opposite the inserter 21). The adhesive tape preferably has a substrate and an adhesive layer provided on one side of the substrate. The substrate may be made of paper, resin film, cloth, or the like, or may be made of the non-flammable materials described above. The adhesive layer may be made of, for example, an acrylic adhesive, a urethane adhesive, a rubber adhesive, or a silicone resin adhesive. The adhesive may also contain a known flame retardant. In another embodiment not shown, the cover member 5 may have a portion covering the opening 13C of the compartment penetration portion 15 that surrounds the penetrating body 21 so as to be in contact with it, and may be fixed to the penetrating body 21 by a fixing member such as a stapler or screw installed from the outside (i.e., the side opposite the penetrating body 21). In another embodiment not shown, the cover member 5 may have, for example, an adhesive fire-resistant material layer or an adhesive layer. The adhesive fire-resistant material layer and the adhesive layer may form the outermost surface of the cover member 5. That is, the cover member 5 may have at least one of an adhesive fire-resistant material layer and an adhesive layer on the inner side (i.e., the side facing the inserter 21).

[0030] The cover member 5 may cover a portion of the sheet-like member 3, making that portion invisible from the outside. Specifically, it may cover the portion of the sheet-like member 3 through which the insert 21 is inserted, thereby improving the design of the compartment penetration portion 15 and the fire resistance of the compartment penetration portion 15. As another embodiment (not shown), a means for making a portion of the sheet-like member 3 invisible from the outside may be to cover a portion of the sheet-like member 3 with the cover member 5 and fix a metal foil, a metal foil composite, or the like other than the cover member 5 to the end surface 3C of the sheet-like member 3 to cover it. As another embodiment (not shown), a means for making a portion of the sheet-like member 3 invisible from the outside may be to cover a gap generated between the cover member 5 and the sheet-like member 3 when the cover member 5 covers a portion of the sheet-like member 3 with the cover member 5, and cover it with a metal foil, a metal foil composite, or the like other than the cover member 5. On the other hand, the cover member 5 may cover a portion of the sheet-like member 3 so that it is visible from the outside. Specifically, as shown in FIG. 2, the cover member 5 may make the end surface 3C of the sheet-like member 3 visible from the outside. By making the end surface 3C of the sheet-like member 3 visible from the outside when the cover member 5 is installed, visual inspection of whether the sheet-like member 3 is installed in the compartment penetration portion 15 can be easily performed. While FIG. 2 shows a configuration in which only the end surface 3C is visible, as shown in FIG. 5, a portion of the front surface 3A of the sheet-like member 3 may be exposed, making a portion of the front surface 3A visible in addition to the end surface 3C. Furthermore, when the cover member 5 is fixed to the end surface 3C of the sheet-like member 3 to cover the sheet-like member 3 as shown in FIG. 6, or when the cover member 5 is fixed to the back surface 3B of the sheet-like member 3 to cover the sheet-like member 3 as shown in FIG. 7, the cover member 5 may have one or more holes (not shown) through which the front surface 3A of the sheet-like member 3 can be visible.

[0031] The cover member 5 is preferably placed so as to be in contact with the sheet-like member 3 and the insert 21. By placing the cover member 5 so as to be in contact with the sheet-like member 3 and the insert 21, the opening 13C of the partition portion 11 can be blocked by the sheet-like member 3 and the cover member 5, thereby improving fire resistance.

[0032] The cover member 5 is installed so as to form a gap 40 between it and the sheet-like member 3. The gap 40 between the sheet-like member 3 and the cover member 5 allows the cover member 5 to be fixed with a margin for axial movement of the insert 21. Since the cover member 5 is fixed to the insert 21 with a margin, even if the insert 21 arranged inside the sheet-like member 3 and the cover member 5 is moved in the axial direction after the sheet-like member 3 and the cover member 5 are installed, the margin of the cover member 5 prevents the sheet-like member 3 and the cover member 5 from moving together with the insert 21. By preventing the sheet-like member 3 and the cover member 5 from moving together with the insert 21, it is possible to prevent the sheet-like member 3 and the cover member 5 from shifting from the compartment penetration portion 15. In other words, with this configuration, the sheet-like member 3 and the cover member 5 can be maintained and arranged in an appropriate position in the compartment penetration portion 15, and the fire resistance of the compartment penetration portion 15 can be maintained. There is a gap 40 between the sheet-like member 3 and the cover member 5, and various configurations can be used to fix the cover member 5 with a margin for axial movement of the inserting body 21. For example, a configuration in which at least a part of the cover member 5 is made of a flexible or stretchable material that allows it to bend or curve, or a configuration in which at least a part of the cover member 5 is fixed to the inserting body 21 with some slack, can be mentioned.

[0033] The cover member 5 may be made of a single layer of fire-resistant material, a single layer of non-combustible material, or both a fire-resistant and non-combustible material layer, but preferably has a non-combustible material layer, and more preferably is made of a non-combustible material layer. Furthermore, the cover member 5 may have layers other than the fire-resistant and non-combustible material layers, such as a material layer made of a material other than a non-combustible material, an adhesive layer, etc. The cover member 5 is preferably made of a metal foil such as aluminum foil, glass cloth, or a metal foil composite, which is a composite of metal foil and glass cloth such as aluminum glass cloth. These constitute the non-combustible material layer. Among these, aluminum glass cloth is more preferred from the viewpoint of fire resistance. The thickness of the non-combustible material layer is not particularly limited, but is, for example, 0.01 to 1 mm, and preferably 0.05 to 0.5 mm. When the non-combustible material layer has a thickness equal to or less than these upper limits, flexibility is imparted to the cover member 5. Therefore, even if the cover member 5 has a non-combustible material layer, it can be wrapped around the outer periphery of the insert 21 while being in close contact with the insert 21. Furthermore, when the thickness is equal to or greater than the lower limit, fire resistance is more easily ensured.

[0034] As described above, the cover member 5 is preferably a sheet that can be deformed to cover the sheet-like member 3, and is preferably thinner than the sheet-like member 3 so as to be flexible and easily deformable. The thickness of the cover member 5 is not particularly limited, but is, for example, 0.01 to 1 mm, and preferably 0.05 to 0.5 mm.

[0035] The fire-resistant material layer used in the cover member 5 is preferably a thermally expandable material that expands when heated. The thermally expandable material prevents the spread of fire by expanding in the event of a fire. The thermally expandable material is preferably formed from a thermally expandable resin composition, as described below. The fire-resistant material layer may also have adhesive properties. The thickness of the fire-resistant material layer is not particularly limited, but is, for example, 0.01 to 1 mm, and preferably 0.05 to 0.5 mm. When the fire-resistant material layer has a thickness equal to or less than these upper limits, flexibility is imparted to the cover member 5. Therefore, even if the cover member 5 has a fire-resistant material layer, it can be wrapped around the outer periphery of the insert 21. Furthermore, when the thickness is equal to or greater than the lower limit, fire resistance is more easily ensured.

[0036] The cover member 5 may have an adhesive fire-resistant material layer or an adhesive layer. The adhesive fire-resistant material layer and the adhesive layer may form the outermost surface of the cover member 5. With the above-described configuration, the cover member 5 can be fixed to the sheet-like member 3 or the insert 21 without using a fixing member separate from the cover member 5. Furthermore, by imparting adhesiveness to the fire-resistant material layer itself, it is not necessary to provide an adhesive layer, which further simplifies the configuration of the cover member 5. When the cover member 5 has an adhesive fire-resistant material layer or an adhesive layer on its outermost surface, a release sheet may be attached to the outermost surface. The release sheet may be peeled off from the outermost surface when in use.

[0037] (Thermal Expandable Resin Composition) The thermally expandable resin composition used in the fire-resistant material such as the fire-resistant material layer will be described in more detail below. The thermally expandable resin composition contains a resin component and a thermally expandable material. When the thermally expandable member is formed from the thermally expandable resin composition containing the resin component, the sheet-like member 3 and the cover member 5 can be easily curved and deformed. Examples of thermally expandable materials include foaming agents that expand upon heating, thermally expandable layered inorganic materials such as vermiculite and thermally expandable graphite, with thermally expandable graphite being preferred. The use of thermally expandable graphite allows for appropriate expansion by the heat of a fire, and the mechanical strength of the expansion residue after expansion is excellent, making it easier to improve fire resistance. The thermally expandable material referred to here does not substantially expand upon molding, etc., as described below, and the thermally expandable resin composition maintains its thermal expandability in the fire-resistant material.

[0038] The expansion start temperature of the thermally expandable material is not particularly limited, but is preferably 150 to 350°C, more preferably 170 to 300°C, and even more preferably 180 to 280°C. By setting the temperature at or below these lower limits, the thermally expandable material is prevented from accidentally expanding due to heating other than that caused by a fire. Furthermore, by setting the temperature at or below the upper limits, the thermally expandable material is more likely to expand reliably due to heating caused by a fire. The expansion starting temperature of a thermally expandable material can be measured by heating a predetermined amount (e.g., 100 mg) of the material at a constant heating rate (e.g., 10°C / min) and measuring the temperature at which the normal force rises. Any measuring device can be used as long as it is capable of controlling the measurement temperature and measuring the normal stress, and a rheometer, for example, can be used. The expansion ratio of the thermally expandable member is preferably 3 times or more, and more preferably 10 times or more. The upper limit of the expansion ratio is not particularly limited, but is, for example, 70 times, and preferably 50 times. When multiple fireproof material layers with different expansion ratios are laminated on the sheet-like member, the expansion ratio may be selected within the above range. Furthermore, for example, the difference between the expansion ratio of the fireproof material layer farthest from the outer surface of the partition and the expansion ratio of the fireproof material layer closest to the outer surface of the partition is preferably 10 to 80 times, more preferably 20 to 70 times, and even more preferably 30 to 60 times. The expansion ratio can be calculated by supplying the thermally expandable member to an electric furnace, heating it at 600°C for 30 minutes, measuring the thickness of the test piece, and then calculating the thickness by dividing the thickness of the test piece after heating by the thickness of the test piece before heating.

[0039] The thermally expandable resin composition in which the thermally expandable material is thermally expandable graphite will be described in detail below. Examples of the resin component of the thermally expandable resin composition include thermoplastic resins, thermosetting resins, and elastomers. Examples of thermoplastic resins include polyvinyl chloride (PVC), chlorinated polyvinyl chloride resin (CPVC), fluororesin, polyphenylene ether, modified polyphenylene ether, polyphenylene sulfide, polycarbonate, polyetherimide, polyetheretherketone, polyarylate, polyamide, polyamideimide, polybutadiene, polyimide, acrylic resin, polyacetal, polyamide, polyethylene (PE), polypropylene (PP), polyolefins such as ethylene vinyl acetate (EVA), polyesters such as ethylene-propylene-diene copolymer (EPDM), chloroprene (CR), polyethylene terephthalate, and polybutylene terephthalate, polycarbonate, polystyrene (PS), polyphenylene sulfide, acrylonitrile-butadiene-styrene copolymer (ABS), acrylonitrile-styrene-acrylonitrile copolymer (ASA), and acrylonitrile / ethylene-propylene-diene / styrene copolymer (AES). Examples of the curable resin include epoxy resin, phenol resin, melamine resin, urea resin, unsaturated polyester resin, alkyd resin, polyurethane, and thermosetting polyimide.

[0040] Examples of elastomers include natural rubber, silicone rubber, styrene-butadiene rubber, isoprene rubber, butadiene rubber, chloroprene rubber, acrylonitrile-butadiene rubber, nitrile-butadiene rubber, butyl rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, urethane rubber, silicone rubber, and fluororubber. Other examples include thermoplastic elastomers such as olefin-based thermoplastic elastomers (TPO), styrene-based thermoplastic elastomers (TPS), ester-based thermoplastic elastomers, amide-based thermoplastic elastomers, and vinyl chloride-based thermoplastic elastomers. The resin component of the thermally expandable resin composition may be one type or a combination of two or more types.

[0041] Furthermore, the thermally expandable resin composition is more likely to have adhesiveness when an elastomer is used as a resin component. To facilitate the development of adhesiveness, the elastomer preferably contains a liquid elastomer. The liquid elastomer is an elastomer that is liquid at room temperature and normal pressure.

[0042] The thermally expandable resin composition may contain a plasticizer. A plasticizer is preferably used when the resin component is a thermoplastic resin such as polyvinyl chloride resin. Specific examples of the plasticizer include phthalate ester plasticizers such as di-2-ethylhexyl phthalate (DOP), dibutyl phthalate (DBP), diheptyl phthalate (DHP), and diisodecyl phthalate (DIDP); adipic acid esters such as di-2-ethylhexyl adipate (DOA), diisobutyl adipate (DIBA), and dibutyl adipate (DBA), and fatty acid ester plasticizers such as adipic acid polyester; epoxidized ester plasticizers such as epoxidized soybean oil; trimellitic acid ester plasticizers such as tri-2-ethylhexyl trimellitate (TO™) and triisononyl trimellitate (TINT™); phosphate ester plasticizers such as trimethyl phosphate (TMP) and triethyl phosphate (TEP); and process oils such as mineral oil. One or more plasticizers can be used. When the thermally expandable resin composition contains a plasticizer, the content of the plasticizer in the thermally expandable resin composition is, for example, in the range of 0.3 parts by mass to 150 parts by mass, and preferably in the range of 10 parts by mass to 100 parts by mass, relative to 100 parts by mass of the resin component. When the plasticizer content is equal to or greater than these lower limits, good moldability is likely to be achieved, and when it is equal to or less than these upper limits, the molded article is provided with appropriate strength.

[0043] The total content of the resin component and the plasticizer is preferably 10% by mass or more and 90% by mass or less, more preferably 25% by mass or more and 80% by mass or less, and even more preferably 40% by mass or more and 70% by mass or less, based on the total amount of the resin composition. By setting the content at or above these lower limits, the moldability of the thermally expandable member can be improved. In addition, flexibility is ensured, making it easy to bend and deform. In addition, by setting the content at or below the upper limits, it becomes possible to blend sufficient amounts of components such as thermally expandable graphite and inorganic filler. The total content of the resin component and the plasticizer means the total content of both the resin component and the plasticizer when both are contained, and means the content of the resin component alone when no plasticizer is contained.

[0044] Thermally expandable graphite is a conventionally known substance, and is produced by treating powder of natural flake graphite, pyrolytic graphite, kish graphite, or the like with an inorganic acid such as concentrated sulfuric acid, nitric acid, or selenic acid, and a strong oxidizing agent such as concentrated nitric acid, perchloric acid, perchlorates, permanganates, dichromates, or hydrogen peroxide to produce a graphite intercalation compound. The produced thermally expandable graphite is a crystalline compound that maintains the layered structure of carbon. The thermally expandable graphite used in the present invention may be thermally expandable graphite obtained by acid treatment and neutralizing it with ammonia, aliphatic lower amines, alkali metal compounds, alkaline earth metal compounds, or the like. Examples of the aliphatic lower amine include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, and butylamine. Examples of the alkali metal compounds and alkaline earth metal compounds include hydroxides, oxides, carbonates, sulfates, and organic acid salts of potassium, sodium, calcium, barium, magnesium, and the like.

[0045] The particle size of the thermally expandable graphite is not particularly limited, but is preferably in the range of 20 to 200 mesh. If the particle size is equal to or greater than the lower limit, the degree of expansion of the graphite tends to increase, resulting in good expandability. On the other hand, if the particle size is equal to or less than the upper limit, good dispersibility when kneaded with a resin is achieved, improving moldability.

[0046] The content of thermally expandable graphite in the thermally expandable resin composition is, for example, 3 parts by mass or more and 300 parts by mass or less, relative to 100 parts by mass of the resin component. When the content of thermally expandable graphite is 3 parts by mass or more, the thermal expandability is good. Furthermore, when the content is 300 parts by mass or less, the moldability is good, and the surface properties, mechanical properties, flexibility, etc. of the sealing member are also good. Furthermore, by selecting the content of thermally expandable graphite within the above range, the expansion ratio can be easily adjusted within a desired range. From these viewpoints, the content of thermally expandable graphite is preferably in the range of 10 parts by mass or more and 200 parts by mass or less, more preferably in the range of 15 parts by mass or more and 100 parts by mass or less.

[0047] The thermally expandable resin composition may further contain an inorganic filler. There are no particular limitations on the inorganic filler, as long as it is an inorganic filler that is generally used in thermally expandable resin compositions. Specific examples include silica, diatomaceous earth, alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, ferrites, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, barium carbonate, dawnnite, hydrotalcite, calcium sulfate, barium sulfate, gypsum fiber, calcium silicate, talc, clay, mycelium, montmorillonite, bentonite, activated clay, seviolite, imogolite, sericite, glass fiber, glass beads, silica balloon, aluminum nitride, aluminum phosphite, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balloon, charcoal powder, various metal powders, potassium titanate, magnesium sulfate, lead zirconium titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powders, slag fiber, fly ash, and dewatered sludge. The inorganic filler may be used alone or in combination of two or more. When an inorganic filler is contained, the content of the inorganic filler in the thermally expandable resin composition is preferably in the range of 3 parts by mass or more and 200 parts by mass or less, and more preferably in the range of 10 parts by mass or more and 150 parts by mass or less, per 100 parts by mass of the resin component.

[0048] The thermally expandable resin composition may contain a known tackifier, which makes it easier to impart tackiness to the thermally expandable member. Furthermore, the thermally expandable resin composition used in the present invention may contain additives commonly used in thermally expandable resin compositions, such as heat stabilizers, lubricants, processing aids, antioxidants, antistatic agents, pigments, crosslinking agents, crosslinking accelerators, etc., as needed, within the range that does not impair the physical properties of the composition. Among these, it is preferable to use processing aids.

[0049] The thermally expandable member can be manufactured, for example, as follows: First, predetermined amounts of resin components, a thermally expandable material, and other additives, if necessary, are mixed in a mixer such as a kneading roll to obtain a thermally expandable resin composition. The thermally expandable resin composition may be diluted by adding a solvent as appropriate. The thermally expandable resin composition, diluted as necessary, is applied to a support such as a substrate or a release sheet, and then appropriately dried, cured, etc., to form a fire-resistant material layer (thermally expandable member) on one side of the support. Alternatively, the fire-resistant material layer may be formed on one side of the support by a known method such as extrusion molding. The fire-resistant material layer formed on the release sheet may be peeled from the release sheet to form a sheet-like member consisting of a single fire-resistant material layer. After peeling from the release sheet, the sheet-like member may be laminated on another layer to obtain a multilayered sheet-like member. Alternatively, the composition may be laminated on another layer while still laminated on the release sheet or another support.

[0050] The construction method of the compartment penetration treatment structure 10 in this embodiment includes a step of installing the above-mentioned sheet-like member 3 so as to block at least a part of the gap 13E between the opening 13C of the compartment penetration portion 15 provided in the partition portion 11 and the insert 21. Then, construction can be performed by covering the sheet-like member 3 with the cover member 5 installed on the sheet-like member 3 and fixing a part of the cover member 5 to the insert 21. Therefore, construction is easy.

[0051] The sheet-like member 3 and cover member 5 used in construction may be separate members, and in the case where they are separate members, construction can be carried out by placing the sheet-like member 3 on the partition section 11, then adhering the cover member 5 to the sheet-like member 3 and installing it, and then covering the sheet-like member 3 with the installed cover member 5. Furthermore, the sheet-like member 3 and cover member 5 used in construction may be an integrated member to which the sheet-like member 3 and cover member 5 are previously adhered.

[0052] According to the configuration of this embodiment, the gap 13E inside the opening 13C of the compartment penetration part 15 is closed by the sheet-like member 3 and the cover member 5, and at least the sheet-like member 3 contains a fire-resistant material. Therefore, it is possible to impart appropriate fire resistance to the compartment penetration part treatment structure 10. In addition, in this embodiment, the fireproof structure is formed by the sheet-like member 3 and the cover member 5 without placing filler materials such as fireproof putty or rock wool inside the compartment penetration portion 15, so there is no variation among workers.

[0053] Furthermore, in this embodiment, at least a portion of the sheet-like member 3 and the cover member 5 are exposed and visible from the outside. If a fixing member is provided to fix the sheet-like member 3 or the cover member 5, the fixing member should also be positioned in a position that is visible from the outside. No other members are provided inside the compartment penetration portion 15 than the insert 21. Therefore, the compartment penetration treatment material can be easily inspected visually or by photographing whether it has been installed as specified. Furthermore, it is less likely that installation will be forgotten.

[0054] [Modification of the first embodiment] In the compartment penetration processing structure 10 shown in Figure 1, the cover member 5 is shown as four extending portions extending outward from the sheet-like member 3, but as shown in Figure 8, it may also be a single sheet-like member that is slightly larger than the sheet-like member 3. 8, the cover member 5 has slits 50 through which the penetrating body 21 is inserted, and at least one of the slits 50 extends to the outer edge of the cover member 5. The slits 50 are formed by cutting. The cover member 5 allows the penetrating body 21 to be inserted into the cover member 5 through the slit 50 that extends to the outer edge.

[0055] Furthermore, in the compartment penetration structure 10 shown in FIGS. 2 and 5, the cover member 5 is adhered to only a portion of the surface 3A of the sheet-like member 3. However, when using a single sheet-like cover member 5 that is slightly larger than the sheet-like member 3 as shown in FIG. 8, the cover member 5 can be adhered to the entire surface 3A of the sheet-like member 3 as shown in FIG. 9. That is, the sheet-like member 3 may be laminated on one surface of the cover member 5. In such a structure, the cover member 5 preferably has a noncombustible material layer. The sheet-like member 3 and the cover member 5 may have a combination of a noncombustible material layer and a fire-resistant material layer to improve fire resistance. Furthermore, an adhesive layer may be provided on the surface of the cover member 5 to which the sheet-like member 3 is adhered, and this adhesive layer allows the cover member 5 to easily adhere to the sheet-like member 3.

[0056] Furthermore, the sheet-shaped member 3 may have a structure in which the base material, which is one layer of the sheet-shaped member 3, extends outward beyond the other layers. With such a structure, the extended portion of the base material can be used as the cover member 5 as it is. Furthermore, although the compartment penetration structure 10 shown in FIGS. 1 and 2 includes the sheet-like member 3 and the cover member 5, the cover member 5 may be omitted.

[0057] [Second embodiment] Next, a second embodiment of the present invention will be described in detail. The second embodiment differs from the first embodiment in that the cover member 5 of the compartment penetration treatment material is made of an elastic foam, as shown in Figures 10 and 11. The differences between the first embodiment and the second embodiment will be described below. Furthermore, parts whose description is omitted are the same as those in the first embodiment. Furthermore, in the following description, parts having the same configuration as those in the first embodiment will be given the same reference numerals.

[0058] 11, the cover member 5 is fixed in a state where it is wrapped around the outer peripheral surface of the insert 21 one or more times. The cover member 5 is preferably in close contact with the insert 21, and therefore may be deformed appropriately to fit the shape of the insert 21. Here, the cover member 5 may be fixed to the outer circumferential surface of the inserter 21 by an adhesive layer disposed on the inner circumferential side. Alternatively, the cover member 5 may be fixed to the inserter 21 by a fixing member provided separately from the cover member 5. Examples of such fixing members include a string-like member wound around the outer circumferential side of the cover member 5, or an adhesive tape. Alternatively, the cover member 5 may be fixed to the inserter 21 by a combination of two or more of these.

[0059] The cover member 5 preferably has an adhesive layer on one surface 5A. By having an adhesive layer on one surface 5A of the cover member 5, it can be easily wrapped around the outer periphery of the inserter 21 one or more times. The pressure-sensitive adhesive layer is preferably formed from a pressure-sensitive adhesive, and examples of the pressure-sensitive adhesive that can be used include acrylic pressure-sensitive adhesives, urethane pressure-sensitive adhesives, rubber pressure-sensitive adhesives, and silicone resin pressure-sensitive adhesives. The pressure-sensitive adhesive layer may be non-flammable, semi-non-flammable, or flame-retardant, and a flame retardant may be blended into the pressure-sensitive adhesive used. The thickness of the pressure-sensitive adhesive layer is, for example, 5 to 400 μm, and preferably 10 to 150 μm. By configuring the cover member 5 to have an adhesive layer on one surface 5A thereof, the cover member 5 can be fixed to the insertion body 21 without using a fixing member separate from the cover member 5. When an adhesive layer is provided on one surface 5A of the cover member 5, a release sheet may be attached to one surface 5A. The release sheet may be peeled off from one surface 5A when the cover member 5 is used.

[0060] By wrapping the cover member 5 around the outer periphery of the insert 21 one or more times, an end face 5B is formed on the cover member 5, and the end face 5B preferably covers at least a part of the surface 3A of the sheet-like member 3, making at least a part of the sheet-like member 3 invisible from the outside. By making at least a part of the sheet-like member 3 invisible with the cover member 5, the design of the compartment penetration part 15 can be improved and the fire resistance of the compartment penetration part 15 can be enhanced. Furthermore, it is preferable that the cover member 5 allows at least one of the end face 3C and the surface 3A of the sheet-like member 3 to be visible from the outside. By allowing at least one of the end face 3C and the surface 3A of the sheet-like member 3 to be visible from the outside when the cover member 5 is installed, visual inspection of whether the sheet-like member 3 is installed in the compartment penetration part 15 can be easily performed.

[0061] The cover member 5 is made of an elastic foam having flexibility that allows it to follow the outer periphery of the inserting body 21. Specific examples of elastic foam include olefin-based resin foam and urethane-based resin foam. The thickness of the elastic foam is not particularly limited, but is, for example, 0.1 to 10 mm, and preferably 0.15 to 5 mm. When the elastic foam has a thickness equal to or less than these upper limits, flexibility is imparted to the cover member 5. Therefore, the cover member 5 can be wrapped around the outer periphery of the insert 21 while being in close contact with the outer periphery. Furthermore, when the thickness is equal to or greater than the lower limit, the cover member 5 can be easily disposed.

[0062] According to the configuration of this embodiment, the gap 13E inside the opening 13C of the compartment penetration 15 is closed by the sheet-like member 3 and the cover member 5, and at least the sheet-like member 3 contains a fire-resistant material. Therefore, the compartment penetration treatment structure 10 can be provided with appropriate fire resistance. As explained above, the compartment penetration treatment structure 10 is constructed by preparing the sheet-like member 3 and the cover member 5, and first installing the sheet-like member 3 so as to close the gap 13E between the opening 13C of the compartment penetration portion 15 and the insert 21. Next, the cover member 5 is wrapped around the insert 21 one or more times, and the cover member 5 is fixed so as to cover at least a portion of the sheet-like member 3. Therefore, construction is easy. In addition, in this embodiment, the fireproof structure is formed by the sheet-like member 3 and the cover member 5 without placing filler materials such as fireproof putty or rock wool inside the compartment penetration portion 15, so there is no variation among workers.

[0063] Furthermore, in this embodiment, at least a portion of the sheet-like member 3 and the cover member 5 are exposed and visible from the outside. If a fixing member is provided to fix the sheet-like member 3 or the cover member 5, the fixing member should also be positioned in a position that is visible from the outside. No other members are provided inside the compartment penetration portion 15 than the insert 21. Therefore, the compartment penetration treatment material can be easily inspected visually or by photographing whether it has been installed as specified. Furthermore, it is less likely that installation will be forgotten.

[0064] [Third embodiment] 12 and 13, in a compartment penetration structure 10 according to a third embodiment of the present invention, a sheet-like member 3 is formed by laminating at least three layers of substrates and thermally expandable fire-resistant material layers. That is, the sheet-like member 3 has both substrates and fire-resistant material layers, and has a total of three or more substrates and fire-resistant material layers.

[0065] As shown in Figures 14(a) to 14(d), the sheet-shaped member 3 has at least three layers of substrates and thermally expandable fireproof material layers laminated together. Specifically, the sheet-shaped member 3 may have three layers of substrates 30A and 30B and fireproof material layers 31A laminated together as shown in Figure 14(a), or may have three layers of substrate 30A and fireproof material layers 31A and 31B laminated together as shown in Figure 14(b). The sheet-shaped member 3 is not limited to a three-layer structure, and may have four layers of substrates 30A and 30B and fireproof material layers 31A and 31B laminated together as shown in Figure 14(c), or may have four layers of substrates 30A, 30B, 30C and fireproof material layers 31A laminated together as shown in Figure 14(d). The sheet-like member 3 may be formed by successively laminating layers of the same type, such as substrate / substrate or fire-resistant material layer / fire-resistant material layer. There is no limit to the number of layers of the sheet-like member 3, and a plurality of substrates 30A,...30Y, 30Z and a plurality of fire-resistant material layers 31A,...31Y, 31Z may be laminated in multiple layers.

[0066] In the present invention, by laminating at least three layers of substrates and fireproof layers, a configuration is achieved in which at least one of the fireproof layers and the fireproof layers is present in multiple layers, and in a configuration in which multiple fireproof layers are present, the multiple fireproof layers contribute to improving fire resistance. Furthermore, in a configuration in which multiple substrates are present, the multiple substrates improve the function of supporting the fireproof layers when heated, making it possible to hold the fireproof layers in their positions, thereby improving fire resistance.

[0067] Note that in the above third embodiment, parts for which description is omitted are similar to those in the first embodiment. For example, when the sheet-shaped member 3 has a plurality of fire-resistant material layers, it is preferable that the expansion ratio of the fire-resistant material layer farthest from the outer surface 11A of the partition 11 is higher than the expansion ratio of the fire-resistant material layer closest to the outer surface 11A of the partition 11. It is also preferable that the sheet-shaped member is configured such that an adhesive fire-resistant material layer 31A is formed on the outermost surface, or that a fire-resistant material layer 31A having an adhesive layer 33 is formed on the outermost surface. The cover member may also be configured as shown in the second embodiment.

[0068] [Other embodiments] The present invention is not limited to the configurations of the first, second and third embodiments described above, and any improvements and modifications may be made without departing from the technical spirit of the present invention. For example, in each of the above embodiments, the compartment penetration treatment material may have a member connected to the sheet-like member 3 and placed inside the compartment penetration part 15. Examples of such members include fire-resistant materials and accessories. As a specific example, a modified example of the first embodiment is shown in Fig. 15. As the fire-resistant material, for example, a block-shaped fire-resistant material 60 as shown in Fig. 15 is used, and the block-shaped fire-resistant material 60 may be connected to the sheet-shaped member 3. The manner of connection is not particularly limited, and for example, the fire-resistant material 60 may be laminated on one side of the sheet-shaped member 3 or connected to an end face of the sheet-shaped member 3. As described above, the fire-resistant material 60 is preferably made of a thermally expandable material that expands when heated, and in particular, it is preferably made of a thermally expandable resin composition.

[0069] Furthermore, in the above description, the partition 11 is a hollow wall having a hollow portion 13 therein, but it is not limited to a hollow wall and may be a wall without a hollow, for example, made of a single wall material. Furthermore, the partition 11 is not limited to a wall of a building and may be a ceiling or floor of a building. Even if the partition is a ceiling or floor, it may have a structure with a hollow portion between two partition materials, or a structure without a hollow portion, for example, made of a single partition material.

[0070] Furthermore, in each of the above embodiments, it has been explained on the assumption that compartment penetration treatment materials of the same structure are provided in both openings 13C, 13D of partition 11 (i.e., on both sides of partition 11), but compartment penetration treatment structures of different structures may be provided in each opening 13C, 13D. For example, one opening 13C may be provided with a compartment penetration treatment structure according to the first embodiment, and the other opening 13D may be provided with a compartment penetration treatment structure according to the second embodiment. Furthermore, the compartment penetration treatment material in opening 13D may be omitted.

[0071] In each of the above embodiments, the sheet-like member 3 may have a sound absorbing layer (not shown) in order to improve the sound absorption properties of the compartment penetration structure 10. Also, in each of the above embodiments, the cover member 5 may have a sound absorbing layer (not shown) in order to improve the sound absorption properties of the compartment penetration structure 10. The sound absorbing layer can be made of glass wool, rock wool, soft urethane foam, ceramic fiber, cellulose fiber, needle punch mat, or the like. The thickness of the sound absorbing layer is not particularly limited, but is, for example, 0.1 to 10 mm, and preferably 0.5 to 5 mm. When the sound absorbing layer has a thickness equal to or less than these upper limits, it becomes easier to install the sheet-like member 3 and the cover member 5. When the sound absorbing layer has a thickness equal to or greater than these lower limits, it becomes easier to ensure sound absorbing performance.

[0072] In each of the above embodiments, the sheet-like member 3 may have a sound-insulating layer (not shown) in order to improve the sound insulation of the compartment penetration structure 10. Also, in each of the above embodiments, the cover member 5 may have a sound-insulating layer (not shown) in order to improve the sound insulation of the compartment penetration structure 10. The sound-insulating layer can be composed of an asphalt sheet, an olefin sheet, an iron-based soft sheet, or the like. The sound-insulating layer can also be composed of a resin material highly filled with an inorganic filler such as calcium carbonate. Specifically, the sound-insulating layer is preferably composed of a resin composition containing 300 to 600 parts by mass of inorganic filler per 100 parts by mass of olefin-based resin, more preferably 350 to 550 parts by mass, and even more preferably 400 to 500 parts by mass. In this way, resin materials highly filled with inorganic filler have a large mass per unit volume, thereby effectively demonstrating sound-insulating effects. The thickness of the sound-insulating layer is not particularly limited, but is, for example, 0.1 to 10 mm, and preferably 0.5 to 5 mm. When the sound-insulating layer has a thickness equal to or less than these upper limits, it becomes easy to install the sheet-like member 34 and the cover member 5. When the sound-insulating layer has a thickness equal to or more than these lower limits, it becomes easier to ensure sound-insulating performance.

[0073] The layer configuration when a sound absorbing layer or a sound insulating layer is provided is, for example, as shown below, but is not limited to the following layer configuration. In the layer configuration shown below, the left side indicates the member located farthest from the outer surface 11A of the partition 11, and the right side indicates the member located closest to the outer surface 11A of the partition 11. Also, the sound absorbing and insulating layer indicates a sound absorbing layer, a sound insulating layer, or both. As shown in the layer configuration below, it is preferable to place the sound absorbing and insulating layer adjacent to the substrate, so that the sound absorbing and insulating layer can be supported by the substrate. Base material / sound absorbing / insulating layer / fireproof layer / base material Sound absorbing / insulating layer / base material / fireproof layer / base material Base material / fireproof layer / sound absorbing / insulating layer / base material Base material / fireproof layer / base material / sound absorbing / insulating layer Base material / sound absorbing / insulating layer / fireproof material layer / base material / sound absorbing / insulating layer Base material / sound absorbing / insulating layer / fireproof material layer / sound absorbing / insulating layer / base material Sound absorbing / insulating layer / base material / fireproof material layer / base material / sound absorbing / insulating layer Sound absorbing / insulating layer / base material / fireproof material layer / sound absorbing / insulating layer / base material Fireproof material layer / base material / sound absorbing / insulating layer / fireproof material layer Fireproof layer / sound-absorbing / insulating layer / base material / fireproof layer Base material / sound absorbing / insulating layer / fireproof layer / base material / fireproof layer Sound absorbing / insulating layer / base material / fireproof layer / base material / fireproof layer Base material / fireproof layer / base material / sound-absorbing / insulating layer / fireproof layer Base material / sound absorbing / insulating layer / fireproof layer / base material / sound absorbing / insulating layer / fireproof layer Base material / sound absorbing / insulating layer / fireproof layer / sound absorbing / insulating layer / base material / fireproof layer Sound absorbing / insulating layer / base material / fireproof layer / base material / sound absorbing / insulating layer / fireproof layer Sound absorbing / insulating layer / base material / fireproof material layer / sound absorbing / insulating layer / base material / fireproof material layer Base material / sound absorbing / insulating layer / fireproof layer / base material / base material Sound absorbing / insulating layer / base material / fireproof material layer / base material / base material Base material / fireproof layer / base material / sound absorbing / insulating layer / base material Base material / fireproof layer / sound absorbing / insulating layer / base material / base material Base material / fireproof layer / base material / base material / sound absorbing / insulating layer Base material / fireproof layer / base material / sound absorbing / insulating layer / base material Base material / sound absorbing / insulating layer / base material / fireproof layer Sound absorbing / insulating layer / base material / base material / fireproof material layer Base material / Base material / Sound absorption / insulation layer / Fireproof material layer Fireproof material layer / Fireproof material layer / Base material / Sound absorbing / insulating layer Fireproof material layer / Fireproof material layer / Sound absorbing / insulating layer / Base material Base material / sound absorbing / insulating layer / base material / fireproof layer / fireproof layer Sound absorbing / insulating layer / base material / base material / fireproof layer / fireproof layer Base material / Base material / Sound absorbing / insulating layer / Fireproof layer / Fireproof layer Base material / sound absorbing / insulating layer / base material / base material / fireproof layer Sound absorbing / insulating layer / substrate / substrate / substrate / fireproof layer Base material / Base material / Sound absorption / insulation layer / Base material / Fireproof material layer Base material / Base material / Base material / Sound absorption / insulation layer / Fireproof material layer Base material / sound absorbing / insulating layer / base material / sound absorbing / insulating layer / base material / fireproof layer Base material / sound absorbing / insulating layer / base material / base material / sound absorbing / insulating layer / fireproof material layer Sound absorbing / insulating layer / base material / sound absorbing / insulating layer / base material / base material / fireproof material layer Sound absorbing / insulating layer / base material / base material / base material / sound absorbing / insulating layer / fireproof material layer [Explanation of symbols]

[0074] 3 Sheet-like members 5 Cover member 10 Compartment penetration processing structure 11 Partition 12A, 12B wall material 13 Hollow part 13A,13B through hole 13C,13D opening 13E Gap 15 Compartment penetration 21 Penetrator 22 String-like member 30A,...30Y,30Z Base material 31A,...31Y,31Z Fireproof material layer 32 Slit 33 Adhesive layer 40 void 50 slits 60 Fireproof materials

Claims

1. A compartment penetration processing structure formed in a partition of a building and having a compartment penetration part into which a long penetrating body is inserted, the compartment penetration part having a fire-resistant structure, a sheet-like member disposed on an outer surface of the partition portion and blocking at least a portion of a gap between the opening of the compartment penetration portion and the insertion body; a cover member that is wrapped around the outer periphery of the inserter so as to contact the surface of the sheet-like member outside the partition portion and that covers at least a part of the surface of the sheet-like member; The sheet-like member has both a base material and a heat-expandable fire-resistant material layer, and the base material and the fire-resistant material layer are stacked in a total of three or more layers.

2. The compartment penetration treatment structure according to claim 1 , wherein the sheet-like member is formed by alternately stacking at least three layers of the base material and the fire-resistant material layer.

3. The compartment penetration structure according to claim 1 or 2, wherein the sheet-like member is formed by laminating a plurality of the base materials and a plurality of the fire-resistant material layers.

4. The compartment penetration treatment structure according to any one of claims 1 to 3, wherein the fire-resistant material layer having adhesive properties or the fire-resistant material layer having an adhesive layer is arranged in contact with the partition portion.

5. The compartment penetration structure according to any one of claims 1 to 3, wherein the substrate is disposed in an outermost layer on a position opposite to the partition portion.

6. The compartment penetration processing structure according to any one of claims 1 to 5, wherein nothing is provided inside the compartment penetration part other than the insert.

7. The compartment penetration processing structure described in any one of claims 1 to 6, wherein the sheet-like member is fixed to the partition portion by at least one of the adhesive fire-resistant material layer or adhesive layer arranged on the inside and a fixing member installed from the outside.

8. The cover member is fixed to at least one of the insert and the sheet-like member by at least one of the adhesive fire-resistant material layer or adhesive layer arranged on the inside, a string-like member or adhesive tape wound from the outside, and a fixing member installed from the outside, A compartment penetration processing structure described in any one of claims 1 to 7.

9. The compartment penetration structure according to any one of claims 1 to 8, wherein the sheet-like member is in contact with the insert.

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