Partition penetration treatment structure, partition penetration treatment material, and construction method of partition penetration treatment structure

Abstract

A compartment penetration treatment structure, a construction method for the compartment penetration treatment structure, and a compartment penetration treatment material are provided that can reduce variations in fire resistance performance and improve fire resistance performance. [Solution] A compartment penetration treatment structure 10 is formed in a partition 11 of a building, and has a compartment penetration section 15, through which a long insert 21 is inserted, as a fireproof structure. The structure is provided with a sheet-like member 3 that blocks at least a portion of the gap between the opening 13C of the compartment penetration section 15 provided in the partition 11 and the insert 21, and the sheet-like member 3 is laminated with at least three layers of base materials 30A, 30B and a heat-expandable fire-resistant material layer 31A.

Description

Technical Field

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

Background Art

[0002] In buildings such as apartment houses, office buildings, and schools, partition penetration parts may be provided in partition parts such as walls to allow long insertion bodies such as cables and pipes to pass through. When a fire breaks out in any section, the partition penetration part is required to have a fire prevention measure (fire resistant structure) to prevent the spread of fire to other sections. The partition part generally consists of two wall parts, and a hollow wall with a hollow part between the wall parts is common.

[0003] As a method of making the partition penetration part a fire resistant structure, for example, a method of filling an amorphous filler such as a fire resistant putty in the gap between the long insertion body and the through hole is known. When using an amorphous filler, a cylindrical member made of a fire resistant material or the like may be disposed between the inside of the through hole of each wall part and the insertion body (see, for example, Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, when using an amorphous filler for the fireproof treatment of the partition penetration part, there may be variations among workers, and sufficient fire resistance performance may not be obtained. Also, when installing refractory materials and their accessories inside the building body, it may not be clear how much (quantity, thickness, length, etc.) they are installed, or it may not be possible to determine whether they are installed as specified. Therefore, in order to confirm whether the refractory materials, etc. are installed as specified, it is necessary to destroy the partition penetration treatment structure and check the internal structure.

[0006] In addition, in order to reduce variations among workers, there is a kit in which members of a predetermined quantity and size are integrated. However, there is a tendency for the number of members to be large, and it is easy to have member loss or omission of installation. Also, due to the packaging of each kit, there is a problem of a large amount of waste generated.

[0007] Also, in a partition penetration structure where long insertion bodies such as cables and pipes are inserted inside, when the insertion body is moved after the partition penetration treatment structure is applied, the refractory materials installed inside may shift from their appropriate positions. Also, due to external forces such as earthquakes, the refractory materials may shift from their appropriate positions. Also, if the refractory material does not expand uniformly but expands unevenly, it may shift or fall off from its appropriate position. Thus, due to the shift of the refractory materials, etc. from their appropriate positions, it becomes difficult to exhibit the fire resistance performance desired for the fireproof structure of the partition penetration part.

[0008] Therefore, an object of the present invention is to provide a partition penetration treatment structure, a construction method of the partition penetration treatment structure, and a partition penetration treatment material that can reduce variations in fire resistance performance and improve fire resistance performance.

Means for Solving the Problems

[0009] The present invention has been made to solve the above problems, and the gist of the present invention is as follows. [1] A partition penetration treatment structure in which a partition penetration portion formed in a partition portion of a building and through which a long insertion body is inserted is made of a fire-resistant structure, and includes a sheet-like member that closes at least a part of a gap between an opening of the partition penetration portion provided in the partition portion and the insertion body, and the sheet-like member has at least three layers of a base material and a fire-resistant material layer having thermal expansion properties laminated thereon. [2] The partition penetration treatment structure according to [1], wherein the sheet-like member has at least three layers of a base material and a fire-resistant material layer having thermal expansion properties laminated alternately. [3] The partition penetration treatment structure according to [1] or [2], wherein the sheet-like member has a plurality of the base materials and a plurality of the fire-resistant material layers laminated thereon. [4] The partition penetration treatment structure according to any one of [1] to [3], wherein the fire-resistant material layer having adhesiveness or the fire-resistant material layer provided with an adhesive layer is disposed in contact with the partition portion. [5] The partition penetration treatment structure according to any one of [1] to [4], wherein the base material is disposed in the outermost layer located on the side opposite to the partition portion. [6] The partition penetration treatment structure according to any one of [1] to [5], wherein nothing is provided inside the partition penetration portion other than the insertion body. [7] The partition penetration treatment structure according to any one of [1] to [6], wherein the sheet-like member is fixed to the partition portion by at least one of the fire-resistant material layer having adhesiveness disposed inside or an adhesive layer, and a fixing member installed from the outside. [8] The partition penetration treatment structure according to any one of [1] to [7], including a cover member that covers the sheet-like member. [9] The partition penetration treatment structure according to [8], wherein the cover member is fixed to at least one of the insertion body and the sheet-like member by at least one of the fire-resistant material layer having adhesiveness disposed inside or an adhesive layer, a string-like member or an adhesive tape wound from the outside, and a fixing member installed from the outside.

[10] The partition penetration treatment structure according to [8] or [9], wherein the sheet-like member is covered with the cover member, and at least one of an end face and a surface of the sheet-like member is visible from the outside.

[11] The partition penetration treatment 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 partition penetration treatment structure according to any one of [1] to

[11] , wherein the partition penetration treatment material including the sheet-like member is provided on both sides of the partition portion.

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

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

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

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

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

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

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

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

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

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

[17] A partition penetration treatment structure that is formed in a partition portion of a building and has a fire-resistant structure for a partition penetration portion through which a long inserted body is inserted, including a sheet-like member that closes at least a part of a gap between an opening of the partition penetration portion provided in the partition portion and the inserted body, The partition penetration treatment structure, wherein the sheet-like member has at least three layers of a base material and a refractory material layer having thermal expansion properties laminated thereon.

[18] A partition penetration treatment material used to make a partition penetration portion formed in a partition portion of a building and through which a long inserted body is inserted have a fire-resistant structure, including a sheet-like member that closes at least a part of a gap between an opening of the partition penetration portion provided in the partition portion and the inserted body, and the sheet-like member has at least three layers of a base material and a refractory material layer having thermal expansion properties laminated thereon.

[19] The partition penetration treatment material according to

[18] , wherein the sheet-like member has at least three layers of a base material and a refractory material layer having thermal expansion properties laminated alternately.

[20] A construction method of a partition penetration treatment structure in which a partition penetration part formed in a partition part of a building and through which a long insertion body is inserted is made of a fire-resistant structure, including a step of installing a sheet-like member so as to block at least a part of a gap between an opening of the partition penetration part provided in the partition part and the insertion body, wherein the sheet-like member has a base material and at least three layers of fire-resistant material layers having thermal expansion properties laminated thereon.

[21] The construction method of the partition penetration treatment structure according to

[20] , wherein the sheet-like member has at least three layers of a base material and fire-resistant material layers having thermal expansion properties laminated alternately.

Advantages of the Invention

[0010] According to the present invention, it is possible to provide a partition penetration treatment structure, a construction method of a partition penetration treatment structure, and a partition penetration treatment material that can reduce variations in fire resistance performance and improve fire resistance performance.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

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Figure 8

Figure 9

Figure 10

Figure 11

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Figure 15

Mode for Carrying Out the Invention

[0012] Hereinafter, the present invention will be described in more detail using embodiments.

[0013] [First Embodiment] As shown in FIG. 1, the partition penetration processing structure according to the first embodiment of the present invention is a partition penetration processing structure having a fire-resistant structure for a partition penetration portion 15 formed in a partition portion 11 of a building and through which a long insertion body 21 is inserted.

[0014] In the partition penetration processing structure of the present invention, the partition part 11 is a member that partitions between compartments (the first compartment A and the second compartment B) on the wall surface of a building, and has a partition penetration part 15 that penetrates from one outer surface 11A side of the partition part 11 to the other outer surface 11B side. The partition part 11 shown in FIG. 1 is a hollow wall and is composed of two wall materials (partition materials) 12A and 12B arranged with an interval (hollow part 13) therebetween. Therefore, the partition penetration part 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 part 13 therebetween. And the outer surface of one wall material 12A constitutes the outer surface 11A of the partition part 11, and the outer surface of the other wall material 12B constitutes the outer surface 11B of the partition part 11. The through holes 13A and 13B may have, for example, a circular shape, an elliptical shape, or a shape approximating these. Note that on each of the outer surfaces 11A and 11B, the through holes 13A and 13B constitute the openings 13C and 13D of the partition penetration part 15 provided in the partition part 11.

[0015] Note that in this specification, the members (in this embodiment, the sheet-like member 3 and the fixing members for fixing these, etc.) that are constructed in the partition penetration part 15 to form the partition penetration processing structure 10 may be collectively referred to as the partition penetration processing material. Also, hereinafter, the configuration of the partition penetration processing structure on one opening 13C side of the partition part 11 will be described. However, in this embodiment, the configuration of the partition penetration processing structure on the other opening 13D side is the same, so the description thereof is omitted.

[0016] The partition penetration processing structure 10 according to the first embodiment includes, as the partition penetration processing material, a sheet-like member 3 and a cover member 5, and the sheet-like member 3 has a refractory material at least as described later.

[0017] 〔Sheet-like member〕 As shown in Fig. 1, the sheet-like member 3 has a slit 32 for inserting the inserted body 21 therein, and at least one of the slits 32 extends to the outer edge of the sheet-like member 3. The slit 32 is formed by a cut. The sheet-like member 3 can insert the inserted body 21 into the inside of the sheet-like member 3 through the slit 32 that extends to the outer edge. Note that the slit 32 may be in a form having a hole for inserting the inserted body 21 therein and a slit 32 that extends from the hole to the outer edge of the sheet-like member 3.

[0018] As shown in Fig. 2, the sheet-like member 3 into which the inserted body 21 is inserted by the slit 32 is disposed on the outer surface 11A so as to cover the gap 13E between the opening 13C and the inserted body 21 from the outside of the partition portion 11. Thereby, the gap 13E between the opening 13C and the inserted body 21 is blocked by the sheet-like member 3. The sheet-like member 3 is preferably disposed so as to contact both the outer surface 11A of the partition portion 11 and the outer periphery of the inserted body 21. By installing the sheet-like member 3 so as to contact the inserted body 21 and the partition portion 11, the opening 13C of the partition portion 11 can be blocked, and the fire resistance can be improved and maintained.

[0019] In the present embodiment, as shown in Figs. 3(a) to (e), at least three layers of a base material and a refractory layer having thermal expansibility are alternately laminated in the sheet-like member 3. Specifically, as shown in Fig. 3(a), the base materials 30A and 30B and the refractory layer 31A may be alternately laminated in three layers, or as shown in Fig. 3(b), the base material 30A and the refractory layers 31A and 31B may be alternately laminated in three layers. The sheet-like member 3 is not limited to a three-layer configuration, and as shown in Fig. 3(c), the base materials 30A and 30B and the refractory layers 31A and 31B may be alternately laminated in four layers.

[0020] In addition, as long as the sheet-like member 3 has a base material / refractory layer / base material or a refractory layer / base material / refractory layer in this order, the base material and the refractory layer do not have to be provided alternately layer by layer, and the same type of layers may be continuously laminated, such as base material / base material or refractory layer / refractory layer. For example, as shown in FIG. 3(d), the base materials 30A and 30B may be continuously laminated, and the base materials 30B and 30C and the refractory layer 31A may be alternately laminated. Further, as shown in FIG. 3(e), there is no limit to the number of laminated layers of the sheet-like member 3, and a plurality of base materials 30A, ··· 30Y, 30Z and a plurality of refractory layers 31A, ··· 31Y, 31Z may be alternately laminated in multiple layers.

[0021] In the present invention, since at least three layers of the base material and the refractory layer having thermal expansibility are alternately laminated, when the sheet-like member 3 is heated, the refractory layer can be appropriately supported by the base material and the heat can be evenly distributed, and the refractory layer can expand substantially uniformly, improving the fire resistance. Further, since the refractory layer of the sheet-like member 3 expands substantially uniformly, it can maintain the appropriate position where it was installed and does not shift, so that the fire resistance can be stably exhibited. Further, by using the sheet-like member 3, a fire-resistant structure is formed without disposing a filler such as a fireproof putty or rock wool inside the partition penetration portion 15, so that there is no variation caused by the operator. Furthermore, when a plurality of refractory layers are laminated on the sheet-like member 3, the refractory layer on the partition portion 11 side that has expanded is embedded inside the gap 13E, preventing the sheet-like member 3 from moving away from the partition portion 11 when it expands, and making the above-described shift less likely to occur. On the other hand, the refractory layer located at a position away from the partition portion 11 expands evenly as described above, and the expansion residue can appropriately prevent the spread of fire.

[0022] When there are multiple refractory layers in the sheet-like member 3, it is preferable that the expansion ratio of the refractory layer farthest from the outer surface 11A of the partition portion 11 is higher than the expansion ratio of the refractory layer closest to the outer surface 11A of the partition portion 11. That is, in the sheet-like member 3 in FIGS. 3(b) and 3(c), it is preferable that the expansion ratio of the refractory layer 31B is higher than the expansion ratio of the refractory layer 31A. The expansion ratio of the refractory layer can be controlled, for example, by selecting the amount and type of the thermally expandable member. In this way, when the expansion ratio of the refractory layer on the partition portion 11 side is low, the strength of the expansion residue is maintained high, and the sheet-like member 3 is appropriately supported by the refractory layer embedded inside the gap 13E, making it even less likely for displacement to occur. In addition, the refractory layer at a position away from the partition portion 11 expands sufficiently upon heating and is more likely to exhibit higher refractory performance.

[0023] In addition, when there are three or more refractory layers, in order to expand the refractory layer farther from the outer surface 11A of the partition portion 11 more favorably and substantially uniformly, it is preferable that the expansion ratio is higher for the refractory layer farther from the outer surface 11A of the partition portion 11. Also, in the above multilayer structure, the adjacent layers may be adhered by a known adhesive, and thus, in the above laminated structures, an adhesive layer may be provided between the layers. In the multilayer structure, the sheet-like member 3 may have the same layer configuration throughout, or may have a partially different structure. For example, the layer configuration of the base material and the refractory layer may be partially changed.

[0024] The refractory layer used for the sheet-like member 3 is a thermally expandable member that expands upon heating. The thermally expandable member prevents the spread of fire by expanding during a fire. The thermally expandable member is preferably formed of a thermally expandable resin composition as described later. The thickness of each refractory layer is not particularly limited, but is, for example, 0.1 to 15 mm, preferably 0.5 to 8 mm. When the refractory layer has a thickness below these upper limit values, flexibility is imparted to the sheet-like member 3. Also, when it has a thickness above the lower limit value, it becomes easier to ensure refractory performance.

[0025] The base material used for the sheet-like member 3 supports the refractory layer and evenly transfers heat to the refractory layer. Examples of the base material include metal foils such as aluminum foil and copper foil, composites of metal foils and glass cloth such as glass cloth and aluminum glass cloth, paper, cloth, resin films, and the like. Among these, from the viewpoint of fire resistance, it is preferably composed of a non-combustible material, and specifically, metal foils and metal foil composites can be mentioned. The non-combustible material is defined in the Building Standards Act and the Enforcement Order of the Building Standards Act. The base material is preferably disposed in the outermost layer located on the side opposite to the partition portion 11. By disposing the base material in the outermost layer of the sheet-like member 3, the refractory layer disposed inside can be well supported, and heat can be evenly transferred to the refractory layer. Therefore, the refractory layer can be expanded more favorably and substantially uniformly. The thickness of each base material is not particularly limited, but is, for example, 0.01 to 1 mm, preferably 0.05 to 0.5 mm. By having a thickness of the non-combustible material layer below these upper limit values, flexibility is imparted to the sheet-like member 3. Also, by having a thickness above the lower limit value, it becomes easier to ensure fire resistance performance.

[0026] As shown in FIG. 4(a), the sheet-like member 3 preferably has a configuration in which a refractory layer 31A having adhesiveness is formed on the outermost surface, or as shown in FIG. 4(b), a configuration in which a refractory layer 31A provided with an adhesive layer 33 is formed on the outermost surface. With the above configuration, the sheet-like member 3 may be disposed in contact with the outer surface 11A of the partition portion 11 by a refractory layer having adhesiveness or an adhesive layer disposed inside (that is, on the side of the partition portion 11). With the above configuration, the sheet-like member 3 can be fixed to the partition portion 11 without using a fixing member as a separate member from the sheet-like member 3. Also, by giving the refractory layer itself adhesiveness, it is not necessary to provide an adhesive layer, so the configuration of the sheet-like member 3 can be further simplified. In addition, when the sheet-like member 3 is provided with a refractory layer having adhesiveness or an adhesive layer on its outermost surface, a release sheet may be attached to its outermost surface. The release sheet is preferably peeled off from the outermost surface during use. The refractory layer can be made sticky by forming it with butyl rubber or the like. The adhesive layer is preferably formed of an adhesive. Examples of the adhesive include acrylic adhesives, urethane adhesives, rubber adhesives, silicone resin adhesives, and the like. The adhesive layer may be non-flammable, semi-non-flammable, or flame-retardant, and a flame retardant or the like may be blended into the adhesive used. The thickness of the adhesive layer is, for example, 5 to 400 μm, preferably 10 to 150 μm. Further, the sheet-like member 3 can be fixed to the outer surface 11A of the partition portion 11 by a fixing member that is a separate member from the sheet-like member 3, such as a tacker or a screw. These fixing members are preferably installed on the outside of the sheet-like member 3 (that is, on the side opposite to the partition portion 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, 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 on the partition portion 11. For example, as shown in FIG. 1, four cover members 5 are used to connect to the four edges of the sheet-like member 3 and serve as four extending portions that extend outward from the sheet-like member 3, and as shown in FIG. 2, they cover the sheet-like member 3 provided on the partition portion 11. Examples of the means for providing the cover member 5 so as to be connected to at least a part of the sheet-like member 3 include means fixed by known fixing means such as adhesives, adhesives and adhesive tapes, and fixing members such as tackers and screws. Here, the adhesive, the adhesive and the adhesive tape are preferably any of non-flammable materials, semi-non-flammable materials or flame-retardant materials, and a flame retardant or the like may be blended into the adhesive, the adhesive, etc. The cover member 5 is sheet-like and deformable, so that it can easily cover the sheet-like member 3.

[0029] As shown in Fig. 1, the covering member 5 has a portion that covers the opening 13C of the partition through-hole 15, surrounds the insertion body 21 in contact therewith, and is fixed to the insertion body 21 by a string-like member 22 wound from the outside. The string-like member 22 may be any member that can be bent, and is preferably a wire member including a wire. The wire member may be a single metal wire, a resin-coated wire in which a metal wire such as a twist cord (registered trademark) is coated with resin, or a member in which a wire and a fiber are intertwined such as a mold. When using a wire member, the covering member 5 can be fixed to the insertion body 21 simply by twisting or turning it. In another aspect (not shown), the covering member 5 has a portion that covers the opening 13C of the partition through-hole 15, surrounds the insertion body 21 in contact therewith, and is fixed to the insertion body 21 by an adhesive tape wound from the outside (i.e., the side opposite to the insertion body 21). The adhesive tape preferably has a base material and an adhesive layer provided on one surface of the base material. As the base material, paper, resin film, cloth, etc. can be used, and the above-mentioned non-combustible materials can also be used. As the adhesive layer, for example, acrylic adhesives, urethane adhesives, rubber adhesives, silicone resin adhesives, etc. can be used. Also, known flame retardants, etc. may be blended into the adhesive. In another aspect (not shown), the covering member 5 has a portion that covers the opening 13C of the partition through-hole 15, surrounds the insertion body 21 in contact therewith, and may be fixed to the insertion body 21 by fixing members such as tackers and screws installed from the outside (i.e., the side opposite to the insertion body 21). In another aspect (not shown), the covering member 5 may, for example, have a fire-resistant layer having adhesiveness or an adhesive layer. The fire-resistant layer having adhesiveness and the adhesive layer are preferably configured to form the outermost surface of the covering member 5. That is, the covering member 5 may have at least one of a fire-resistant layer having adhesiveness and an adhesive layer on the inner side (i.e., the insertion body 21 side).

[0030] The cover member 5 preferably covers a part of the sheet-like member 3 to make a part of the sheet-like member 3 invisible from the outside. Specifically, it is preferable to cover the portion through which the insertion body 21 of the sheet-like member 3 is inserted, whereby the design property of the partition through portion 15 can be improved, and the fire resistance of the partition through portion 15 can be enhanced. As a means for making a part of the sheet-like member 3 invisible from the outside, as another embodiment (not shown), while covering a part of the sheet-like member 3 with the cover member 5, a metal foil, a metal foil composite, or the like other than the cover member 5 may be fixed to and cover the end face 3C of the sheet-like member 3. Further, as a means for making a part of the sheet-like member 3 invisible from the outside, as another embodiment (not shown), when a part of the sheet-like member 3 is covered with the cover member 5, the gap generated between the cover member 5 and the sheet-like member 3 may be covered 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 preferably covers a part of the sheet-like member 3 so as to be visible from the outside. Specifically, as shown in FIG. 2, the cover member 5 preferably makes the end face 3C of the sheet-like member 3 visible from the outside. By making the end face 3C of the sheet-like member 3 visible from the outside in the state where the cover member 5 is installed, a visual inspection of whether the sheet-like member 3 is installed in the partition through portion 15 can be easily performed. In FIG. 2, a configuration in which only the end face 3C is visible is shown, but as shown in FIG. 5, a part of the surface 3A of the sheet-like member 3 may be exposed so that, in addition to the end face 3C, a part of the surface 3A is also visible. Further, as shown in FIG. 6, when the cover member 5 is fixed to the end face 3C of the sheet-like member 3 to cover the sheet-like member 3, or as shown in FIG. 7, when the cover member 5 is fixed to the back face 3B of the sheet-like member 3 to cover the sheet-like member 3, the cover member 5 may have one or more holes (not shown), and the surface 3A of the sheet-like member 3 may be visible through the holes.

[0031] The cover member 5 is preferably installed in contact with the sheet-like member 3 and the insertion body 21. By installing the cover member 5 in contact with the sheet-like member 3 and the insertion body 21, the opening 13C of the partition portion 11 can be closed by the sheet-like member 3 and the cover member 5, and the fire resistance can be improved.

[0032] The cover member 5 is installed so as to form a gap 40 between it and the sheet-like member 3. The presence of 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 the axial movement of the inserted body 21. Since the cover member 5 is fixed to the inserted body 21 with a margin, even when the inserted body 21 disposed inside the sheet-like member 3 and the cover member 5 is axially moved after the installation of the sheet-like member 3 and the cover member 5, the margin of the cover member 5 buffers the situation where the sheet-like member 3 and the cover member 5 move together with the inserted body 21. By buffering the situation where the sheet-like member 3 and the cover member 5 move together with the inserted body 21, it is possible to suppress the sheet-like member 3 and the cover member 5 from shifting from the partition penetration portion 15. That is, with such a configuration, the sheet-like member 3 and the cover member 5 can be continuously maintained and arranged at appropriate positions in the partition penetration portion 15, and the fire resistance of the partition penetration portion 15 can be maintained. There can be various forms of the configuration in which there is a gap 40 between the sheet-like member 3 and the cover member 5 and the cover member 5 is fixed with a margin for the axial movement of the inserted body 21. For example, a configuration using a material having flexibility or elasticity such that at least a part of the cover member 5 can be bent or curved, and a configuration in which at least a part of the cover member 5 is fixed so as to have slack with respect to the inserted body 21, etc. can be mentioned.

[0033] The cover member 5 may be composed of a single layer of a refractory material layer, may be composed of a single layer of a non-combustible material layer, or may have both a refractory material layer and a non-combustible material layer. However, it preferably has a non-combustible material layer, and more preferably consists of a non-combustible material layer. Also, it may have a layer other than the refractory material layer and the non-combustible material layer, and examples of such a layer include a material layer composed of a material other than a non-combustible material, an adhesive layer, etc. As the cover member 5, preferably, a metal foil such as aluminum foil, a glass cloth, a metal foil composite such as a composite of a metal foil and a glass cloth like an aluminum glass cloth, etc. can be mentioned. These constitute a non-combustible material layer. Among these, an aluminum glass cloth is more preferable from the viewpoint of fire resistance. The thickness of the non-combustible material layer is not particularly limited, but for example, it is 0.01 to 1 mm, preferably 0.05 to 0.5 mm. By having a thickness below these upper limit values, flexibility is imparted to the cover member 5. Therefore, the cover member 5 can be wound around the outer periphery of the inserted body 21 while being in close contact therewith even if it has a non-combustible material layer. Also, by having a thickness above the lower limit value, it becomes easier to ensure fire resistance performance.

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

[0035] The refractory layer used for the cover member 5 is preferably a thermally expandable member that expands upon heating. The thermally expandable member prevents the spread of fire by expanding during a fire. The thermally expandable member is preferably formed of a thermally expandable resin composition as described later. Also, the refractory layer may have adhesiveness. Note that the thickness of the refractory layer is not particularly limited, but for example, it is 0.01 to 1 mm, preferably 0.05 to 0.5 mm. By having a thickness below these upper limit values, flexibility is imparted to the cover member 5. Therefore, even if the cover member 5 has a refractory layer, it can be wound around the outer periphery of the inserted body 21. Also, by having a thickness above the lower limit value, it becomes easier to ensure fire resistance performance.

[0036] The cover member 5 may have a refractory layer having adhesiveness or an adhesive layer. The refractory layer having adhesiveness and the adhesive layer preferably constitute the outermost surface in the cover member 5. With the above configuration, the cover member 5 can be fixed to the sheet-like member 3 or the inserted body 21 without using a fixing member as a separate member from the cover member 5. Also, by giving the refractory layer itself adhesiveness, it is not necessary to provide an adhesive layer, so the configuration of the cover member 5 can be further simplified. In addition, when an adhesive refractory material layer or an adhesive layer is provided on the outermost surface of the cover member 5, a release sheet may be attached to the outermost surface. The release sheet may be peeled off from the outermost surface during use.

[0037] (Thermally expandable resin composition) Hereinafter, the thermally expandable resin composition used for refractory materials such as refractory material layers will be described in more detail. The thermally expandable resin composition contains a resin component and a thermally expandable material. By forming the thermally expandable member from the thermally expandable resin composition containing the resin component, the bending and deformation of the sheet-like member 3 and the cover member 5 are facilitated. Examples of the thermally expandable material include foaming agents that foam upon heating, vermiculite, and thermally expandable layered inorganic substances such as thermally expandable graphite. Among them, thermally expandable graphite is preferred. By using thermally expandable graphite, it can be appropriately expanded by the heating of a fire, and the mechanical strength of the expansion residue after expansion is excellent, making it easier to improve the fire resistance. Here, the thermally expandable material does not substantially expand by molding or the like described later, and the thermally expandable resin composition maintains its thermal expandability in the refractory material.

[0038] The expansion start temperature of the thermally expandable material is not particularly limited, but for example, it is preferably 150 to 350°C, more preferably 170 to 300°C, and even more preferably 180 to 280°C. By setting the lower limit value or less, it is possible to prevent the thermally expandable material from expanding erroneously due to heating other than a fire. Also, by setting the upper limit value or less, it becomes easier to surely expand the thermally expandable material by the heating of a fire. In addition, the expansion start temperature of the thermally expandable material can be measured by heating a predetermined amount (for example, 100 mg) of the thermally expandable material at a constant heating rate (for example, 10°C / min) and measuring the temperature at which the normal force rises. As the measuring device, any device that can control the measuring temperature and measure the normal stress may be used. For example, a rheometer may be used. The expansion ratio of the thermally expandable member is preferably 3 times or more, more preferably 10 times or more. The upper limit of the expansion ratio is not particularly limited, but for example, it is 70 times, preferably 50 times. When a plurality of refractory layers with different expansion ratios are laminated on the sheet-like member, the expansion ratio may be selected within the above range. Further, for example, the difference between the expansion ratio of the refractory layer farthest from the outer surface of the partition portion and the expansion ratio of the refractory layer closest to the outer surface of the partition portion is preferably 10 to 80 times, more preferably 20 to 70 times, and even more preferably 30 to 60 times. Note that the expansion ratio may 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 using (thickness of the test piece after heating) / (thickness of the test piece before heating).

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

[0040] Examples of the elastomer include rubbers such as 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. Also included are thermoplastic elastomers such as olefin-based thermoplastic elastomer (TPO), styrene-based thermoplastic elastomer (TPS), ester-based thermoplastic elastomer, amide-based thermoplastic elastomer, and vinyl chloride-based thermoplastic elastomer. The resin component of the thermally expandable resin composition may be one type or a combination of two or more types.

[0041] In addition, the thermally expandable resin composition is likely to have adhesiveness by using an elastomer as the resin component. Further, from the viewpoint of easily exhibiting adhesiveness, it is preferable that the elastomer contains a liquid elastomer. Note that the liquid elastomer is an elastomer that becomes liquid at normal temperature and normal pressure.

[0042] The thermally expandable resin composition may contain a plasticizer. The plasticizer is preferably used when the resin component is a thermoplastic resin such as a polyvinyl chloride resin. Specific examples of the plasticizer include phthalate plasticizers such as di-2-ethylhexyl phthalate (DOP), dibutyl phthalate (DBP), diheptyl phthalate (DHP), diisodecyl phthalate (DIDP), adipic acid esters such as di-2-ethylhexyl adipate (DOA), diisobutyl adipate (DIBA), dibutyl adipate (DBA), 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 (TOTM), triisononyl trimellitate (TINTM), phosphate ester plasticizers such as trimethyl phosphate (TMP), triethyl phosphate (TEP), and process oils such as mineral oil. One kind or two or more kinds of 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 or more and 150 parts by mass or less, preferably in the range of 10 parts by mass or more and 100 parts by mass or less, based on 100 parts by mass of the resin component. When the plasticizer is at or above these lower limit values, the moldability tends to be good, and when it is at or below the upper limit value, an appropriate strength is imparted to the molded body.

[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 it at or above these lower limit values, the moldability of the thermally expandable member can be improved. Also, flexibility is ensured, and bending and deformation become easy. By setting it at or below the upper limit value, it becomes possible to blend a sufficient amount of components such as thermally expandable graphite and inorganic fillers. Note that the total content of the resin component and the plasticizer means the total content of these when both the resin component and the plasticizer are contained, and means the content of the resin component alone when the plasticizer is not contained.

[0044] Thermally expandable graphite is a conventionally known substance obtained by treating powders such as natural flaky graphite, pyrolytic graphite, and kish graphite with inorganic acids such as concentrated sulfuric acid, nitric acid, and selenic acid, and strong oxidizing agents such as concentrated nitric acid, perchloric acid, perchlorates, permanganates, dichromates, and hydrogen peroxide to form graphite intercalation compounds. The resulting thermally expandable graphite is a crystalline compound that maintains the layered structure of carbon. As the thermally expandable graphite used in the present invention, those obtained by neutralizing the thermally expandable graphite obtained by acid treatment with ammonia, aliphatic lower amines, alkali metal compounds, alkaline earth metal compounds, etc. can also be used. Examples of aliphatic lower amines include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, butylamine, etc. Examples of alkali metal compounds and alkaline earth metal compounds include hydroxides, oxides, carbonates, sulfates, organic acid salts, etc. of potassium, sodium, calcium, barium, magnesium, etc.

[0045] The particle size of the thermally expandable graphite is not particularly limited, but those in the range of 20 to 200 mesh are preferred. When the particle size is at or above the lower limit value, the expansion degree of graphite tends to be large and the foaming property becomes good. Also, by setting it below the upper limit value, the dispersibility during kneading with the resin becomes good and the moldability is improved.

[0046] The content of the 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 with respect to 100 parts by mass of the resin component. When the content of the thermally expandable graphite is 3 parts by mass or more, the thermal expandability becomes good. Also, when it is 300 parts by mass or less, the moldability becomes good, and the surface property, mechanical properties, flexibility, etc. of the seal member also become good. Further, by selecting the content of the thermally expandable graphite within the above range, it becomes easy to adjust the expansion ratio within a desired range. From these viewpoints, the content of the thermally expandable graphite is preferably in the range of 10 parts by mass or more and 200 parts by mass or less, and 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. The inorganic filler is not particularly limited as long as it is an inorganic filler generally used in thermally expandable resin compositions. Specifically, for example, 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, dawn night, hydrotalcite, calcium sulfate, barium sulfate, gypsum fiber, calcium silicate, talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite, 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 zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, stainless steel fiber, zinc borate, various magnetic powders, slag fiber, fly ash, dehydrated sludge, etc. can be mentioned. One or more inorganic fillers can be used. When containing an inorganic filler, 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, more preferably in the range of 10 parts by mass or more and 150 parts by mass or less with respect to 100 parts by mass of the resin component.

[0048] The thermally expandable resin composition may contain a known tackifier. By containing a tackifier, it becomes easier to impart adhesiveness to the thermally expandable member. In addition, to the thermally expandable resin composition used in the present invention, additives generally used in thermally expandable resin compositions such as heat stabilizers, lubricants, processing aids, antioxidants, antistatic agents, pigments, crosslinking agents, crosslinking accelerators, etc. may be added as long as the physical properties thereof are not impaired. Among these, it is preferable to use a processing aid.

[0049] The thermally expandable member can be manufactured, for example, as follows. First, a predetermined amount of a resin component, a thermally expandable material, and additives blended as required are mixed with a mixer such as a kneading roll to obtain a thermally expandable resin composition. The thermally expandable resin composition may be diluted by appropriately adding a solvent. The thermally expandable resin composition diluted as required is applied to a support such as a base material or a release sheet, and is appropriately dried, cured, etc., so that a refractory layer (thermally expandable member) is formed on one surface of the support. Further, a refractory layer may be formed on one surface of the support by a known method such as extrusion molding. The refractory layer formed on the release sheet may be made into a sheet-like member composed of a single layer of the refractory layer by peeling it from the release sheet. Then, a sheet-like member having a multilayer structure may be obtained by laminating it on another layer after peeling it from the release sheet. Further, it may be laminated on another layer while being laminated on the release sheet or another support.

[0050] The construction method of the partition penetration treatment structure 10 in the present embodiment includes a step of installing the sheet-like member 3 described above so as to block at least a part of the gap 13E between the opening 13C of the partition penetration portion 15 provided in the partition portion 11 and the inserted body 21. Then, the sheet-like member 3 can be constructed 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 inserted body 21. Therefore, the construction is easy.

[0051] The sheet-like member 3 and the cover member 5 used for construction may be separate bodies. In the case of separate bodies, after installing the sheet-like member 3 on the partition portion 11, the cover member 5 is adhered to the sheet-like member 3 and installed, and the sheet-like member 3 can be constructed by covering the sheet-like member 3 with the installed cover member 5. Further, the sheet-like member 3 and the cover member 5 used for construction may be an integral body in which the sheet-like member 3 and the cover member 5 are adhered in advance.

[0052] According to the configuration of the above-described embodiment, the gap 13E inside the opening 13C of the partition penetration portion 15 is blocked by the sheet-like member 3 and the cover member 5, and at least the sheet-like member 3 among these has a refractory material. Therefore, appropriate fire resistance can be imparted to the partition penetration portion treatment structure 10. Also, in this embodiment, since the refractory structure is formed by the sheet-like member 3 and the cover member 5 without arranging a filler such as a refractory patty or rock wool inside the partition penetration portion 15, there is no variation caused by the operator.

[0053] Furthermore, in this embodiment, at least a part of at least the sheet-like member 3 and the cover member 5 is exposed and visible from the outside. Also, when a fixing member for fixing the sheet-like member 3 or the cover member 5 is provided, the fixing member may be arranged at a position visible from the outside. And, inside the partition penetration portion 15, no member other than the insertion body 21 is provided. Therefore, it can be easily inspected by visual inspection or photography that the partition penetration treatment material has been constructed as specified. Also, it is less likely to occur that the construction is forgotten.

[0054] [Modification Example of the First Embodiment] In the partition penetration portion treatment structure 10 shown in FIG. 1, the cover member 5 is shown as having four extending portions extending outward from the sheet-like member 3, but as shown in FIG. 8, it may be a single sheet-like member that is slightly larger than the sheet-like member 3. As shown in FIG. 8, the cover member 5 has a slit 50 for the insertion body 21 to be inserted therein, and at least one of the slits 50 extends to the outer edge of the cover member 5. The slit 50 is formed by a cut. The cover member 5 can insert the insertion body 21 into the inside of the cover member 5 through the slit 50 extending to the outer edge.

[0055] In addition, in the partition penetration processing structure 10 shown in FIGS. 2 and 5, although the mode in which the cover member 5 is adhered only to a part of the surface 3A of the sheet-like member 3 is shown, when using a single sheet-like cover member 5 that is slightly larger than the sheet-like member 3 as shown in FIG. 8, as shown in FIG. 9, the cover member 5 can be adhered to the entire surface 3A of the sheet-like member 3. That is, the sheet-like member 3 may have a structure laminated on one surface of the cover member 5. In such a structure, it is preferable that the cover member 5 has a non-combustible material layer. By making the sheet-like member 3 and the cover member 5 a combination of a non-combustible material layer and a refractory material layer, the fire resistance can be improved. Further, an adhesive layer may be provided on the surface of the cover member 5 to which the sheet-like member 3 is adhered, and the adhesive layer enables easy adhesion to the sheet-like member 3.

[0056] In addition, the sheet-like member 3 may have a structure in which a base material, which is one layer of the sheet-like member 3, extends outside other layers. According to such a structure, the extending portion of the base material can be used as the cover member 5 as it is. In addition, in the partition penetration processing structure 10 shown in FIGS. 1 and 2, although the mode in which the sheet-like member 3 and the cover member 5 are provided respectively is shown, the cover member 5 may be omitted.

[0057] [Second Embodiment] Next, the second embodiment of the present invention will be described in detail. In the second embodiment, the difference from the first embodiment is that, as shown in FIGS. 10 and 11, the cover member 5 of the partition penetration processing material is made of an elastic foam. Hereinafter, the differences between the second embodiment and the first embodiment will be described. Also, the parts where the description is omitted are the same as those in the first embodiment. In the following description, members having the same configuration as those in the first embodiment described above are given the same reference numerals.

[0058] As shown in FIG. 11, the cover member 5 is fixed in a state of being wound around the outer peripheral surface of the insertion body 21 for one or more turns. The cover member 5 is preferably in close contact with the insertion body 21, and therefore, it may be appropriately deformed according to the shape of the insertion body 21. Here, the cover member 5 may be fixed to the outer peripheral surface of the inserted body 21 by an adhesive layer disposed on the inner peripheral side. Further, the cover member 5 may be fixed to the inserted body 21 by a fixing member provided separately from the cover member 5. Examples of such a fixing member include a string-like member wound from the outer peripheral side of the cover member 5 or an adhesive tape. Further, the cover member 5 may be fixed to the inserted body 21 by a combination of two or more of these.

[0059] The cover member 5 preferably has a configuration in which an adhesive layer is provided on one surface 5A. By adopting a configuration in which an adhesive layer is provided on one surface 5A of the cover member 5, it is possible to easily achieve a state in which the cover member 5 is wound around the outer periphery of the inserted body 21 for one or more turns. The adhesive layer is preferably formed of an adhesive, and as the adhesive, for example, an acrylic adhesive, a urethane adhesive, a rubber adhesive, a silicone resin adhesive, or the like can be used. The adhesive layer may be non-combustible, semi-non-combustible, or flame-retardant, and a flame retardant or the like may be blended into the adhesive used. The thickness of the adhesive layer is, for example, 5 to 400 μm, preferably 10 to 150 μm. By adopting a configuration in which an adhesive layer is provided on one surface 5A of the cover member 5, the cover member 5 can be fixed to the inserted body 21 without using a fixing member as a separate member from the cover member 5. In addition, when an adhesive layer is provided on one surface 5A of the cover member 5, a release sheet may be attached to the one surface 5A. The release sheet is preferably peeled off from the one surface 5A during use.

[0060] By winding the cover member 5 around the outer periphery of the inserted body 21 for one or more turns, an end face 5B is formed on the cover member 5, and at least a part of the surface 3A of the sheet-like member 3 is covered by the end face 5B, and it is preferable that at least a part of the sheet-like member 3 is made invisible from the outside. By making at least a part of the sheet-like member 3 invisible by the cover member 5, the design property of the partition through portion 15 can be improved, and the fire resistance of the partition through portion 15 can be improved. Further, it is preferable that the cover member 5 enables at least one of the end face 3C and the front surface 3A of the sheet-like member 3 to be visually recognized from the outside. By enabling at least one of the end face 3C and the front surface 3A of the sheet-like member 3 to be visually recognized from the outside with the cover member 5 installed, a visual inspection of whether the sheet-like member 3 is installed in the partition through-hole 15 can be easily performed.

[0061] The cover member 5 is composed of an elastic foam having flexibility capable of following the outer periphery of the inserted body 21. Specific examples of the elastic foam include olefin resin foam and urethane resin foam. The thickness of the elastic foam is not particularly limited, but for example, it is 0.1 to 10 mm, preferably 0.15 to 5 mm. By having a thickness below these upper limit values, flexibility is imparted to the cover member 5. Therefore, the cover member 5 can be wound around while being in close contact with the outer periphery of the inserted body 21. Also, by having a thickness above the lower limit value, the arrangement of the cover member 5 becomes easy.

[0062] According to the configuration of the present embodiment described above, the gap 13E inside the opening 13C of the partition through-hole 15 is blocked by the sheet-like member 3 and the cover member 5, and at least the sheet-like member 3 among these has a refractory material. Therefore, appropriate fire resistance can be imparted to the partition through-hole treatment structure 10. Also, as described above, the partition through-hole treatment structure 10 prepares the sheet-like member 3 and the cover member 5, and first, the sheet-like member 3 is installed so as to block the gap 13E between the opening 13C of the partition through-hole 15 and the inserted body 21. Next, the cover member 5 is wound around the inserted body 21 one or more times, and the sheet-like member 3 can be fixed so as to cover at least a part thereof by the cover member 5. Therefore, the construction is easy. Further, in the present embodiment, since a refractory structure is formed by the sheet-like member 3 and the cover member 5 without arranging a filler such as refractory putty or rock wool inside the partition through-hole 15, there is no variation caused by the operator.

[0063] Furthermore, in the present embodiment, at least a part of at least the sheet-like member 3 and the cover member 5 is exposed and visible from the outside. Also, when a fixing member for fixing the sheet-like member 3 or the cover member 5 is provided, the fixing member may be arranged at a position visible from the outside. And, inside the partition penetration portion 15, no member other than the inserted body 21 is provided. Therefore, it can be easily checked by visual inspection or photographing that the partition penetration treatment material has been constructed as specified. Also, it becomes less likely to occur construction omissions and the like.

[0064] [Third Embodiment] As shown in FIGS. 12 and 13, in the partition penetration treatment structure 10 according to the third embodiment of the present invention, the sheet-like member 3 has at least three layers of a base material and a refractory material layer having thermal expansion properties laminated. That is, the sheet-like member 3 has both a base material and a refractory material layer, and has a total of three or more layers of the base material and the refractory material layer.

[0065] As shown in FIGS. 14(a) to (d), the sheet-like member 3 has at least three layers of a base material and a refractory material layer having thermal expansion properties laminated. Specifically, as shown in FIG. 14(a), the sheet-like member 3 may have three layers of base materials 30A, 30B and a refractory material layer 31A laminated, or as shown in FIG. 14(b), the base material 30A and the refractory material layers 31A, 31B may be laminated in three layers. The sheet-like member 3 is not limited to a three-layer configuration, and as shown in FIG. 14(c), the base materials 30A, 30B and the refractory material layers 31A, 31B may be laminated in four layers, or as shown in FIG. 14(d), the base materials 30A, 30B, 30C and the refractory material layer 31A may be laminated in four layers. The sheet-like member 3 may have the same kind of layers continuously laminated such as base material / base material, refractory material layer / refractory material layer. The sheet-like member 3 is not limited by the number of laminated layers, and a plurality of base materials 30A, ··· 30Y, 30Z and a plurality of refractory material layers 31A, ··· 31Y, 31Z may be laminated in multiple layers.

[0066] In the present invention, since at least three layers of a base material and a refractory layer are laminated, at least one of the refractory layers and the refractory layers has a configuration in which a plurality of layers are present. In the configuration in which a plurality of refractory layers are present, the plurality of refractory layers contribute to improving the fire resistance. Further, in the configuration in which a plurality of base materials are present, when heated, the plurality of base materials improve the function of supporting the refractory layer and can hold the refractory layer at the arranged position, and the fire resistance can be improved.

[0067] In addition, the parts omitted from the description in the above third embodiment are the same as those in the first embodiment. For example, when there are a plurality of refractory layers in the sheet-like member 3, it is preferable that the expansion ratio of the refractory layer farthest from the outer surface 11A of the partition portion 11 is higher than the expansion ratio of the refractory layer closest to the outer surface 11A of the partition portion 11. Further, the sheet-like member preferably has a configuration in which the refractory layer 31A having adhesiveness is formed on the outermost surface, or a configuration in which the refractory layer 31A provided with the adhesive layer 33 is formed on the outermost surface. Further, the cover member can also be in the form shown in the second embodiment.

[0068] [Other Embodiments] The present invention is not limited to the configurations of the above first, second, and third embodiments, and any improvements and modifications may be made without departing from the technical idea of the present invention. For example, in each of the above embodiments, the partition penetration treatment material may be connected to the sheet-like member 3 and have a member disposed inside the partition penetration portion 15. Examples of such a member include a refractory material and accessories. As a specific example, a modified example of the first embodiment is shown in FIG. 15. As the refractory material, for example, a block-shaped refractory material 60 as shown in FIG. 15 may be used, and the block-shaped refractory material 60 may be connected to the sheet-like member 3. The manner of connection is not particularly limited. For example, it may be laminated on one surface of the sheet-like member 3 or connected to the end surface of the sheet-like member 3. The refractory material 60 is preferably made of a thermally expandable member that expands by heating, and more preferably formed from a thermally expandable resin composition.

[0069] In the above description, the partition portion 11 is a hollow wall with a hollow portion 13 inside. However, it is not limited to a hollow wall and may be a wall without a hollow portion. For example, it may be composed of a single wall material. Further, the partition portion 11 is not limited to the wall of a building and may be the ceiling or floor of a building. Even in the case of the ceiling or floor, the partition portion may have a structure with a hollow portion between two partition materials, or may have a structure without a hollow portion, and may be composed of, for example, a single partition material.

[0070] In addition, in each of the above embodiments, it has been described on the premise that partition penetration treatment materials having the same structure are provided at both openings 13C and 13D (that is, both sides of the partition portion 11) of the partition portion 11. However, partition penetration treatment structures of different structures may be provided at each of the openings 13C and 13D. For example, a partition penetration treatment structure according to the first embodiment may be provided at one opening 13C, and a partition penetration treatment structure according to the second embodiment may be provided at the other opening 13D. Further, the partition penetration treatment material at the opening 13D may be omitted.

[0071] In each of the above embodiments, from the viewpoint of improving the sound absorption performance of the partition penetration treatment structure 10, the sheet-like member 3 can be configured to have a sound absorption layer (not shown). Further, in each of the above embodiments, from the viewpoint of improving the sound absorption performance of the partition penetration treatment structure 10, the cover member 5 can be configured to have a sound absorption layer (not shown). The sound absorption layer can be composed of glass wool, rock wool, soft urethane foam, ceramic fiber, cellulose fiber, needle punch mat, and the like. The thickness of the sound absorption layer is not particularly limited. For example, it is 0.1 to 10 mm, preferably 0.5 to 5 mm. By having a thickness below these upper limit values, the installation of the sheet-like member 3 and the cover member 5 can be facilitated. Further, by having a thickness above these lower limit values, it becomes easier to ensure the sound absorption performance.

[0072] In each of the above embodiments, from the viewpoint of improving the sound insulation property of the partition penetration processing structure 10, the sheet-like member 3 can be configured to have a sound insulation layer (not shown). Further, in each of the above embodiments, from the viewpoint of improving the sound insulation property of the partition penetration processing structure 10, the cover member 5 can be configured to have a sound insulation layer (not shown). The sound insulation layer can be composed of an asphalt sheet, an olefin sheet, an iron-based soft sheet, or the like. Further, the sound insulation layer can also be composed of a resin material highly filled with an inorganic filler such as calcium carbonate. Specifically, it is preferably composed of a resin composition containing 300 to 600 parts by mass of an inorganic filler with respect to 100 parts by mass of an olefin resin, more preferably composed of a resin composition containing 350 to 550 parts by mass, and even more preferably composed of a resin composition containing 400 to 500 parts by mass. Thus, the resin material highly filled with an inorganic filler effectively exhibits a sound insulation effect by increasing the mass per unit volume. The thickness of the sound insulation layer is not particularly limited, but is, for example, 0.1 to 10 mm, preferably 0.5 to 5 mm. By having a thickness below these upper limit values, the installation of the sheet-like member 34 and the cover member 5 can be facilitated. Further, by having a thickness above these lower limit values, it becomes easier to ensure the sound insulation performance.

[0073] When a sound absorption layer or a sound insulation layer is provided, the layer configuration is as shown below, for example, but is not limited to the following layer configuration. In the layer configuration shown below, the left side indicates the member at the position farthest from the outer surface 11A of the partition portion 11, and the right side indicates the member at the position closest to the outer surface 11A of the partition portion 11. Further, the sound absorption and insulation layer indicates a sound absorption layer, a sound insulation layer, or both. As shown in the following layer configuration, the sound absorption and insulation layer is preferably adjacent to the base material, whereby the sound absorption and insulation layer can be supported by the base material. Base material / Sound absorption and insulation layer / Fireproof layer / Base material Sound absorption and insulation layer / Base material / Fireproof layer / Base material Base material / Fireproof layer / Sound absorption and insulation layer / Base material Base material / Fireproof layer / Base material / Sound absorption and insulation layer Base material / Sound absorption and shielding layer / Fire-resistant layer / Base material / Sound absorption and shielding layer Base material / Sound absorption and shielding layer / Fire-resistant layer / Sound absorption and shielding layer / Base material Sound absorption and shielding layer / Base material / Fire-resistant layer / Base material / Sound absorption and shielding layer Sound absorption and shielding layer / Base material / Fire-resistant layer / Sound absorption and shielding layer / Base material Fire-resistant layer / Base material / Sound absorption and shielding layer / Fire-resistant layer Fire-resistant layer / Sound absorption and shielding layer / Base material / Fire-resistant layer Base material / Sound absorption and shielding layer / Fire-resistant layer / Base material / Fire-resistant layer Sound absorption and shielding layer / Base material / Fire-resistant layer / Base material / Fire-resistant layer Base material / Fire-resistant layer / Base material / Sound absorption and shielding layer / Fire-resistant layer Base material / Sound absorption and shielding layer / Fire-resistant layer / Base material / Sound absorption and shielding layer / Fire-resistant layer Base material / Sound absorption and shielding layer / Fire-resistant layer / Sound absorption and shielding layer / Base material / Fire-resistant layer Sound absorption and shielding layer / Base material / Fire-resistant layer / Base material / Sound absorption and shielding layer / Fire-resistant layer Sound absorption and shielding layer / Base material / Fire-resistant layer / Sound absorption and shielding layer / Base material / Fire-resistant layer Base material / Sound absorption and shielding layer / Fire-resistant layer / Base material / Base material Sound absorption and shielding layer / Base material / Fire-resistant layer / Base material / Base material Base material / Fire-resistant layer / Base material / Sound absorption and shielding layer / Base material Base material / Fire-resistant layer / Sound absorption and shielding layer / Base material / Base material Base material / Fire-resistant layer / Base material / Base material / Sound absorption and shielding layer Base material / Fire-resistant layer / Base material / Sound absorption and shielding layer / Base material Base material / Sound absorption and shielding layer / Base material / Fire-resistant layer Sound absorption and shielding layer / Base material / Base material / Fire-resistant layer Base material / Base material / Sound absorption and shielding layer / Fire-resistant layer Fire-resistant layer / Fire-resistant layer / Base material / Sound absorption and shielding layer Fire-resistant layer / Fire-resistant layer / Sound absorption and shielding layer / Base material Base material / Sound absorption and shielding layer / Base material / Fire-resistant layer / Fire-resistant layer Sound absorption and shielding layer / Base material / Base material / Fire-resistant layer / Fire-resistant layer Base material / Base material / Sound absorption and shielding layer / Fire-resistant layer / Fire-resistant layer Base material / Sound absorption and shielding layer / Base material / Base material / Fire-resistant layer Sound absorption and shielding layer / Base material / Base material / Base material / Fire-resistant layer Base material / Base material / Sound absorption and shielding layer / Base material / Fire-resistant layer Base material / Base material / Base material / Sound absorption and shielding layer / Fire-resistant layer Base material / Sound absorption and shielding layer / Base material / Sound absorption and shielding layer / Base material / Fire-resistant layer Base material / Sound absorption and shielding layer / Base material / Base material / Sound absorption and shielding layer / Fire-resistant layer Sound absorption and shielding layer / Base material / Sound absorption and shielding layer / Base material / Base material / Fire-resistant layer Sound absorption and shielding layer / Base material / Base material / Base material / Sound absorption and shielding layer / Fire-resistant layer

Explanation of symbols

[0074] 3 Sheet-like member 5 Cover member 10 Compartment penetration treatment structure 11 Partition part 12A, 12B Wall material 13 Hollow part 13A, 13B Through-hole 13C, 13D Opening 13E Gap 15 Compartment penetration part 21 Inserted body 22 String-like member 30A, ··· 30Y, 30Z Base material 31A, ··· 31Y, 31Z Fire-resistant layer 32 Slit 33 Adhesive layer 40 Void 50 Slit 60 Fire-resistant material

Claims

1. A partition penetration treatment structure having a fire-resistant structure for a partition penetration portion formed in a partition portion of a building and through which a long insertion member is inserted, a sheet-like member provided so as to be in contact with the partition portion and closing at least a part of a gap between an opening of the partition penetration portion and the insertion member, and a cover member wound around an outer periphery of the insertion member so as to be in contact with a surface of the sheet-like member outside the partition portion and covering at least a part of the surface of the sheet-like member. The partition penetration treatment structure, wherein the sheet-like member has at least three layers of a base material and a refractory material layer having thermal expansibility laminated thereon.

2. The partition penetration treatment structure according to claim 1, wherein the sheet-like member has at least three layers of a base material and a refractory material layer having thermal expansibility laminated alternately.

3. The partition penetration treatment structure according to claim 1 or 2, wherein a plurality of the base materials and a plurality of the refractory material layers are laminated.

4. The partition penetration treatment structure according to any one of claims 1 to 3, wherein the refractory material layer having an adhesive property or the refractory material layer provided with an adhesive layer is disposed in contact with the partition portion.

5. The partition penetration treatment structure according to any one of claims 1 to 3, wherein the base material is disposed in an outermost layer located on a side opposite to the partition portion.

6. The partition penetration treatment structure according to any one of claims 1 to 5, wherein nothing is provided inside the partition penetration portion other than the insertion member.

7. The partition penetration treatment structure according to 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 refractory material layer disposed inside or the fixing member installed from the outside.

8. The partition penetration treatment structure according to any one of claims 1 to 7, wherein the cover member is fixed to at least one of the insertion member and the sheet-like member by at least one of the adhesive refractory material layer disposed inside, the string-like member or the adhesive tape wound from the outside, and the fixing member installed from the outside.

9. The partition penetration treatment structure according to any one of claims 1 to 8, wherein the sheet-like member is covered with the cover member, and at least one of an end face and a surface of the sheet-like member is visible from the outside.

10. The partition penetration treatment structure according to any one of claims 1 to 9, wherein there is a gap between the sheet-like member and the cover member.

11. The partition penetration treatment material including the sheet-like member is the partition penetration treatment structure according to any one of claims 1 to 10, provided on both sides of the partition portion.

12. The partition penetration treatment structure according to any one of claims 1 to 11, wherein the sheet-like member contacts the inserted body.

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