JP5364003B2 - Method for producing laminated sheet, joint material and extruded product - Google Patents

Description

The present invention relates to eye Chizai and a manufacturing method thereof.

  The joints between the outer wall panels of the building are usually loaded with joint materials for the purpose of waterproofing, fire resistance, appearance, workability, and the like. As such a joint material, a material having a plurality of lips projecting from both sides of a long and thick columnar portion is used.

  Since the joint material lacks fire resistance, in order to ensure fire resistance, a non-combustible material such as glass wool is loaded on the joint, and Patent Document 1 discloses a plate having flame barrier properties. A joint gasket in which a core material is embedded has also been proposed.

  However, as described above, when glass wool is loaded on the joint, fire resistance is improved, but there is a problem that the work for loading glass wool on the joint is complicated. Further, although the joint gasket does not have the above-mentioned problems, it has a problem that it is difficult to load into the joint because the flexibility of the portion where the plate-like core material is embedded is impaired. ing.

Patent Document 2 discloses a highly durable fire-resistant resin sheet obtained by laminating an ultraviolet protection layer on both sides of a thermally expandable refractory material layer, and the thermally expandable refractory material layer contains a thermally expandable inorganic compound. A highly durable refractory resin sheet having a volume expansion ratio of 1.1 to 100 times has been proposed which comprises a resin composition contained therein and is heated for 30 minutes under heating conditions of 50 kW / m ² .

  This highly durable refractory resin sheet is laminated with a UV protection layer on both sides of the thermally expandable refractory material layer so that it will not deteriorate even if it is exposed to UV light for a long time in the process of storage, distribution or use after production. It is described that an aluminum foil or the like is used as the ultraviolet ray prevention layer (paragraph numbers [0047] to [0048]).

  However, the ultraviolet protection layer of the highly durable fire-resistant resin sheet in Patent Document 2 is merely laminated on the thermally expandable fire-resistant material layer to shield ultraviolet rays, and the highly durable fire-resistant resin sheet is combined with a high-temperature resin. There is no disclosure of extrusion.

Japanese Patent Laid-Open No. 2004-324397 JP 2003-239424 A

The present invention is loaded work on formed like between the outer wall panels joints is easy, thermally expandable refractory material during fire expansion, carbonized to form a foamed refractory layer, from fire through joint occurs A joint material that can be prevented and a method for producing the joint material are provided.

Joint material of the present invention, the laminated sheet and heat the synthetic resin sheet and thermally expandable fireproof material and insulation sheet are laminated in this order, from the opposite sides the lip portion is protruded and rubber resin of the columnar portion It is characterized by being integrated with the joint material body .

And the manufacturing method of the joint material of the present invention is to supply the rubber-based resin to the extruder, melt knead and supply it to the extrusion die, and the heat-resistant synthetic resin sheet, the heat-expandable refractory material and the heat-insulating sheet in this order. in a laminated comprising laminated sheets fed to the extrusion die, and the joint member main body the laminated sheet lip on both sides is extruded in the form of a joint member main body which protrudes in the columnar portion of the above rubber-based resin It is characterized by manufacturing joint materials .

  In the joint material of the present invention, a joint material main body made of a rubber-based resin with lip portions projecting on both sides of a columnar part, a heat-resistant synthetic resin sheet, a heat-expandable fire-resistant material, and a heat-insulating sheet are laminated in this order. The heat-expandable refractory material is not unexpectedly expanded by the heat applied during the manufacturing process, and the heat-expandable refractory material is not expanded in the event of a fire. It expands and carbonizes according to performance and forms a foamed refractory layer to seal joints formed between outer wall panels and the like, and can effectively prevent spreading through the joints between outer wall panels.

  Further, in the above joint material, when the heat-adhesive synthetic resin sheet is laminated on the heat-resistant synthetic resin sheet, the heat-adhesive synthetic resin sheet causes the heat-resistant synthetic resin sheet and the thermally expandable refractory material to become the joint material main body. Even after a long period of time has elapsed since loading into joints formed between outer wall panels, etc., the heat-expandable refractory material does not accidentally drop off from the joint material body. Thermally expandable refractory material is securely disposed in joints formed between outer wall panels, etc., and in the event of a fire, the thermally expandable refractory material expands and carbonizes to form a foamed refractory layer and is formed between outer wall panels. Seals the joints reliably and exhibits excellent fire resistance.

  The joint material is produced by supplying a rubber-based resin to an extruder, melt-kneading and supplying it to an extrusion die, and a heat-resistant synthetic resin sheet, a heat-expandable refractory material and a heat-insulating sheet are laminated in this order. The laminated sheet is supplied to the extrusion die, and the rubber-based resin is extruded into the form of a joint material body in which lip portions protrude from both sides of the columnar part, and the laminated sheet is integrated with the joint material body. As described above, the heat-resistant synthetic resin sheet prevents heat from the molten rubber-based resin from being directly transferred to the heat-expandable refractory material during the manufacturing process. It prevents the heat-expandable refractory material from expanding unexpectedly. Therefore, the joint material obtained is integrated with the joint material body in a non-expanded state, and the heat-expandable refractory material expands, carbonizes and foams to the desired volume in the event of a fire. A fireproof layer can be formed to securely seal the joint and prevent the fire from spreading through the joint.

It is sectional drawing which showed the joint material of this invention. It is sectional drawing which showed another example of the joint material of this invention. It is sectional drawing which showed another example of the joint material of this invention. It is the schematic diagram which showed an example of the manufacturing apparatus used for manufacture of the joint material of this invention. It is sectional drawing which showed the use condition of the joint material of this invention. It is sectional drawing which showed the use condition of the joint material of this invention. It is sectional drawing which showed another example of the joint material of this invention. It is sectional drawing which showed another example of the joint material of this invention. It is sectional drawing which showed another example of the joint material of this invention. It is sectional drawing which showed another example of the joint material of this invention.

  The laminated sheet of the present invention is characterized in that a heat-resistant synthetic resin sheet, a thermally expandable refractory material, and a heat insulating sheet are laminated in this order. First, an example of a joint material using the laminated sheet of the present invention will be described with reference to the drawings. As shown in FIG. 1, the joint material A is a state in which the heat-resistant synthetic resin sheet 2, the heat-expandable fire-resistant material 3, and the heat-insulating sheet 4 are laminated and integrated in this order in the joint material body 1. It is buried.

  As shown in FIG. 1, the joint material body 1 includes lip portions 12, 12... On columnar portions 11 having a substantially rectangular cross section, and upper and lower ends on both sides of the columnar portions 11 and center portions in the vertical direction.・ Projected. The columnar portion 11 of the joint material body 1 is formed in a long shape extending in a direction orthogonal to the paper surface in FIG. 1, and the lip portions 12, 12... Are continuous in the direction orthogonal to the paper surface in FIG. Is formed. Note that the lip portions protruding from the upper end, the center portion, and the lower end of the columnar portion 11 are distinguished from the lip portion 12a, the lip portion 12b, and the lip portion 12c, respectively. The joint material A is loaded into the joint of the building so that the lip portion 12c of the joint material body 1 is on the indoor side. 1 shows a case where three lip portions 12, 12... Are formed on both sides of the columnar portion 11, but the number of lip portions 12 need not be three. It may be 1, 2 or 4 or more.

  The joint material main body 1 is formed of a rubber-based resin and has only to have rubber elasticity at the use temperature thereof, for example, ethylene propylene diene rubber (EPDM), chloroprene rubber (CR), nitrile. Examples include thermoplastic elastomers (TPE) such as rubber (NBR), styrene butadiene rubber (SBR), olefinic thermoplastic elastomer (TPO), styrene thermoplastic elastomer (TPS), and vinyl chloride thermoplastic elastomer (TPVC). Ethylene propylene diene rubber (EPDM) and olefin thermoplastic elastomer (TPO) are preferable. In addition, a rubber-type resin may be used independently or 2 or more types may be used together.

  In the central part of the joint material body 1 in the vertical direction, a long heat-resistant synthetic resin sheet 2, a long sheet-like thermally expandable refractory material 3, and a long heat insulating sheet 4 are arranged in this order. And the length direction of the heat-resistant synthetic resin sheet 2, the sheet-like thermally expandable refractory material 3, and the heat insulating sheet 4 is the length of the joint material body 1. It is buried in a state that matches the direction.

  Specifically, the heat-resistant synthetic resin sheet 2 and the sheet shape are formed in a state where the columnar part 11 is traversed in the left and right lip parts 12b and 12b projecting from the central part in the vertical direction of the columnar part 11 of the joint material body 1. A laminated sheet B in which the thermally expandable refractory material 3 and the heat insulating sheet 4 are laminated and integrated in this order is embedded. In addition, in the state which loaded joint material A in the joint of a building, the heat-resistant synthetic resin sheet 2 of joint material A becomes an outdoor side.

  As the heat-expandable refractory material 3, a material that expands by heating and generates a flame-resistant foamed refractory layer is used. The heat-expandable refractory material 3 is not particularly limited, and includes, for example, an epoxy resin, a phosphorus compound, neutralized heat-expandable graphite, and a resin composition (A) containing an inorganic filler, a thermoplastic resin, and Examples thereof include a resin composition (B) containing a rubber substance, a phosphorus compound, neutralized thermally expandable graphite, and an inorganic filler.

  First, the resin composition (A) will be described. Although it does not specifically limit as an epoxy resin, Basically, it can obtain by making the monomer and epoxy resin which have an epoxy group react. The curing method of the epoxy resin is not particularly limited, and can be performed by a known method. As the monomer having an epoxy group, for example, a bifunctional glycidyl ether type, glycidyl ester type, or polyfunctional glycidyl ether type monomer is used.

  Examples of the bifunctional glycidyl ether type monomer include polyethylene glycol type, polypropylene glycol type, neopentyl glycol type, 1,6-hexanediol type, trimethylolpropane type, propylene oxide-bisphenol A type, and hydrogenated bisphenol A. Monomers such as molds are used. Examples of the glycidyl ether type monomer include hexahydrophthalic anhydride type, tetrahydrophthalic anhydride type, dimer acid type, and p-oxybenzoic acid type monomer. As the polyfunctional glycidyl ether type monomer, for example, a phenol novolak type, an orthocresol novolak type, a DPP novolak type, a dicyclopentadiene / phenol type monomer or the like is used. These monomers having an epoxy group may be used alone or in combination of two or more.

  As the curing agent, a polyaddition type or a catalyst type is used. As the polyaddition type curing agent, for example, polyamine, acid anhydride, polyphenol, polymercaptan and the like are used. As the catalyst type curing agent, for example, tertiary amines, imidazoles, Lewis acids, Lewis bases and the like are used. The epoxy resin is excellent in shape maintenance after thermal expansion because the carbonized layer (combustion residue) formed during heating functions as a foamed refractory layer and has a crosslinked structure.

  The phosphorus compound is not particularly limited. For example, red phosphorus; various phosphate esters such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, xylenyl diphenyl phosphate; sodium phosphate, Metal phosphates such as potassium phosphate and magnesium phosphate; ammonium polyphosphates; compounds represented by the following chemical formula (Formula 1) are used. Among these, from the viewpoint of fire resistance, red phosphorus, ammonium polyphosphates, and compounds represented by the chemical formula (Chemical Formula 1) are preferable, and ammonium polyphosphates are more preferable in terms of performance, safety, cost, and the like.

In the formula, R ¹ and R ³ represent hydrogen, a linear or branched alkyl group having 1 to 16 carbon atoms, or an aryl group having 6 to 16 carbon atoms. R ² is a hydroxyl group, a linear or branched alkyl group having 1 to 16 carbon atoms, a linear or branched alkoxyl group having 1 to 16 carbon atoms, an aryl group having 6 to 16 carbon atoms, or carbon. The aryloxy group of Formula 6-16 is shown.

  Red phosphorus improves the flame retardant effect by adding a small amount. As red phosphorus, commercially available red phosphorus can also be used, but from the viewpoint of safety such as moisture resistance and not spontaneously igniting during kneading, a material in which the surface of red phosphorus particles is coated with a resin is preferably used. .

  Examples of the ammonium polyphosphates include, but are not limited to, ammonium polyphosphate, melamine-modified ammonium polyphosphate, and the like, and ammonium polyphosphate is preferably used from the viewpoint of handleability. Examples of commercially available products include “EXOLIT AP422” and “EXOLIT AP462” manufactured by Clariant, “Sumisafe P” manufactured by Sumitomo Chemical Co., Ltd., “Terrage C60”, “Terrage C70” and “Terrage C80” manufactured by Chisso. It is done.

  The compound represented by the chemical formula (1) is not particularly limited. For example, methylphosphonic acid, dimethyl methylphosphonate, diethyl methylphosphonate, ethylphosphonic acid, propylphosphonic acid, butylphosphonic acid, 2-methylpropylphosphonic acid, t-butylphosphonic acid, 2,3-dimethyl-butylphosphonic acid, octylphosphonic acid, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphinic acid, methylnitylphosphinic acid, methylpropylphosphinic acid, diethylphosphinic acid, dioctylphosphinic acid, Examples include phenylphosphinic acid, diethylphenylphosphidic acid, diphenylphosphinic acid, and bis (4-methoxyphenyl) phosphinic acid. Of these, t-butylphosphonic acid is preferable in terms of high flame retardancy although it is expensive. The said phosphorus compound may be used independently or may use 2 or more types together.

  The above heat-expandable graphite is composed of natural scale-like graphite, pyrolytic graphite, quiche graphite and other inorganic acids such as concentrated sulfuric acid, nitric acid and selenic acid, concentrated nitric acid, perchloric acid, perchlorate and permanganic acid. It is a graphite intercalation compound produced by treatment with a strong oxidizing agent such as salt, dichromate, hydrogen peroxide, etc., and is a crystalline compound that maintains the layered structure of carbon. The heat-expandable graphite acid-treated as described above is further neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound, etc. To do.

  The aliphatic lower amine is not particularly limited, and examples thereof include monomethylamine, dimethylamine, trimethylamine, ethylamine, propylamine, and butylamine. The alkali metal compound and alkaline earth metal compound are not particularly limited, and examples thereof include hydroxides such as potassium, sodium, calcium, barium, and magnesium, oxides, carbonates, sulfates, and organic acid salts. It is done.

  The particle size of the neutralized heat-expandable graphite is preferably 20 to 200 mesh. When the particle size is smaller than 200 mesh, the degree of expansion of graphite is small, and a predetermined foamed refractory layer cannot be obtained. When the particle size is larger than 20 mesh, there is an advantage that the degree of expansion of graphite is large. When kneading, the dispersibility deteriorates, and the deterioration of physical properties is inevitable. As a commercial item of the heat-expandable graphite neutralized, for example, “Frame Cut GREP-EG” manufactured by Tosoh Corporation, “GRAFGUARD” manufactured by UCAR Carbon Corporation, and the like can be given.

  The inorganic filler is not particularly limited, and examples thereof include metal oxides such as alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, and ferrites; calcium hydroxide, hydroxide Hydrous minerals such as magnesium, aluminum hydroxide, hydrotalcite; metal carbonates such as basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate, barium carbonate; calcium sulfate, gypsum fiber, calcium silicate, etc. Calcium salt; silica, diatomaceous earth, dosonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite, imogolite, sericite, glass fiber, glass beads, silica-based balun, aluminum nitride, boron nitride, nitriding Ion, carbon black, graphite, carbon fiber, carbon balun, charcoal powder, various metal powders, potassium titanate, magnesium sulfate “MOS” (trade name), lead zirconate titanate, aluminum borate, molybdenum sulfide, silicon carbide, Examples include stainless steel fibers, zinc borate, various magnetic powders, slag fibers, fly ash and the like.

  The said inorganic filler may be used independently or may use 2 or more types together. Of the inorganic fillers, the combined use of a hydrous inorganic substance and a metal carbonate is particularly preferable. The hydrous inorganic substance and the metal carbonate are considered to contribute to the improvement of the strength of the combustion residue and the increase of the heat capacity because they function as aggregates.

  The above-mentioned water-containing inorganic substances such as magnesium hydroxide and aluminum hydroxide are endothermic due to the water produced by the dehydration reaction during heating, the temperature rise is reduced, and high heat resistance is obtained, and oxidation as a heating residue It is particularly preferable in that the residual strength is improved by the fact that an object remains and acts as an aggregate. Magnesium hydroxide and aluminum hydroxide differ in the temperature range where the dehydration effect is exerted. Therefore, when used together, the temperature range where the dehydration effect is exhibited widens, and a more effective temperature rise suppressing effect can be obtained. preferable.

  The metal carbonates such as calcium carbonate and zinc carbonate are considered to promote expansion by the reaction with the phosphorus compound, and in particular, when ammonium polyphosphate is used as the phosphorus compound, a high expansion effect is obtained. It also acts as an effective aggregate and forms a highly shape-retaining residue after combustion.

  As a particle size of the said inorganic filler, 0.5-100 micrometers is preferable, More preferably, it is 1-50 micrometers. And when this inorganic filler is added in a small amount, it is preferable that the particle size is small because the dispersibility greatly affects the performance. However, when the amount is less than 0.5 μm, secondary aggregation occurs and the dispersibility deteriorates. . When the amount of the inorganic filler added is large, the viscosity of the resin composition increases and moldability decreases as the high filling progresses, but the viscosity of the resin composition can be decreased by increasing the particle size. From the point of view, those having a large particle size are preferred. Moreover, when a particle size exceeds 100 micrometers, the mechanical physical property of a resin composition will fall.

  In addition, the inorganic filler is more preferably used in combination with a large particle size and a small particle size, by using in combination, while maintaining the mechanical performance of the thermally expandable refractory material 3, High filling is possible. As the inorganic filler, for example, “Hijilite H-42M” (made by Showa Denko) having a particle diameter of 1 μm, which is aluminum hydroxide, “Heidilite H-31” (made by Showa Denko) having a particle diameter of 18 μm, and “Whiteon SB red” (made by Shiraishi Calcium Co., Ltd.) having a particle size of 1.8 μm, which is calcium carbonate, “BF300” (made by Bihoku Flour Chemical Co., Ltd.) having a particle size of 8 μm, and the like.

  In the resin composition (A), the compounding amount of the phosphorus compound is preferably 50 to 150 parts by weight with respect to 100 parts by weight of the epoxy resin. When the blending amount is less than 50 parts by weight, sufficient shape retention cannot be obtained for the combustion residue, and when the blending amount is large, the mechanical properties are greatly deteriorated and cannot be used.

  In the resin composition (A), the blending amount of the heat-expandable graphite subjected to neutralization treatment is preferably 15 to 100 parts by weight with respect to 100 parts by weight of the epoxy resin. When the blending amount is less than 15 parts by weight, a fire-resistant layer having a sufficient thickness is not formed, and thus the fire resistance performance is lowered. When the blending amount is more than 100 parts by weight, the mechanical strength is greatly lowered and cannot be used.

  In the resin composition (A), the blending amount of the inorganic filler is preferably 30 to 500 parts by weight with respect to 100 parts by weight of the epoxy resin. When the blending amount is less than 30 parts by weight, sufficient fire resistance cannot be obtained with a decrease in heat capacity. When the blending amount exceeds 500 parts by weight, the mechanical strength is greatly decreased and cannot be used.

  As the resin composition (B), those containing a thermoplastic resin and / or a rubber substance, a phosphorus compound, neutralized thermally expandable graphite, and an inorganic filler are used. The thermoplastic resin and / or rubber substance is not particularly limited. For example, polyolefin resin such as polypropylene resin, polyethylene resin, poly (1-) butene resin, polypentene resin; polystyrene resin, acrylonitrile-butadiene -Styrene resin, polycarbonate resin, polyphenylene ether resin, acrylic resin, polyamide resin, polyvinyl chloride resin, phenol resin, polyurethane resin, polybutene, polychloroprene, polybutadiene, polyisobutylene, butyl rubber, nitrile rubber And hydrogenated petroleum resin.

  The said thermoplastic resin and / or rubber substance may be used independently, and 2 or more types may be used together. Further, in order to adjust the melt viscosity, flexibility, adhesiveness, etc. of the thermoplastic resin and / or rubber substance, a blend of two or more kinds may be used as the base resin.

  The thermoplastic resin and / or rubber substance may be subjected to crosslinking or modification within a range not impairing performance. There is no particular limitation on the timing of crosslinking and modification of the thermoplastic resin and / or rubber substance, and a thermoplastic resin and / or rubber substance that has been previously crosslinked and modified may be used. When other components are blended, they may be crosslinked or modified at the same time. Moreover, after mix | blending another component with a thermoplastic resin and / or a rubber substance, you may bridge | crosslink and modify | denature, and this bridge | crosslinking and modification | denaturation may be performed in any step.

  The method for crosslinking the thermoplastic resin and / or rubber substance is not particularly limited, and examples include a conventional crosslinking method such as a crosslinking method using various crosslinking agents and peroxides, a crosslinking method by electron beam irradiation, and the like. It is done. The phosphorus compound, neutralized thermally expandable graphite and inorganic filler used in the resin composition (B) are the same as those used in the resin composition (A).

  In the resin composition (B), the compounding amount of the phosphorus compound and neutralized thermally expandable graphite (the total amount of both) is 20 to 500 weights per 100 parts by weight of the thermoplastic resin and / or rubber substance. Part is preferred. When the total amount of both is less than 20 parts by weight, sufficient thermal expansion cannot be obtained, and when it exceeds 500 parts by weight, uniform dispersion becomes difficult, and it becomes difficult to form a uniform thickness.

  The weight ratio of the phosphorus compound to the neutralized thermally expandable graphite (thermally expandable graphite / phosphorus compound) is preferably 0.01 to 9. If the ratio of thermally expandable graphite increases, graphite expanded during combustion will scatter and it will become difficult to form a sufficient foamed refractory layer, and if the ratio of phosphorus compound increases, a sufficient foamed refractory layer will not be formed. Heat insulation cannot be obtained.

  In the resin composition (B), the amount of the inorganic filler is preferably 50 to 500 parts by weight with respect to 100 parts by weight of the thermoplastic resin and / or rubber substance. When the blending amount is less than 50 parts by weight, sufficient fire resistance cannot be obtained, and when it exceeds 500 parts by weight, the mechanical strength is lowered. When the resin composition (B) is insufficient in tackiness, the tackiness can be imparted, for example, by adding a tackifier to the thermoplastic resin and / or rubber substance. It does not specifically limit as a tackifier, For example, tackifying resin, a plasticizer, fats and oils, a polymer low polymer, etc. are mentioned.

  In the resin compositions (A) and (B), flame retardants, antioxidants, metal damage inhibitors, antistatic agents, stabilizers, crosslinking agents, lubricants, softeners, pigments are used as long as the physical properties are not impaired. A tackifying resin or the like may be added.

  The resin composition (A) or (B) can be obtained by melt-kneading each of the above components using a known kneading apparatus such as an extruder, a kneader mixer, a two-roller, or a Banbury mixer. it can. And these sheet | seat compositions can be set as the sheet-like heat-expandable refractory material 3 by shape | molding by a well-known method.

  The heat-resistant synthetic resin sheet 2 is laminated and integrated on the upper surface of the sheet-like thermally expandable refractory material 3. This heat-resistant synthetic resin sheet 2 is disposed in order to prevent the thermally expandable refractory material 3 from being heated and expanded by heat from the molten joint material body 1 during the manufacturing process of the joint material A. Yes.

  Thus, the thermally expandable refractory material 3 is embedded in the joint material A in a non-expanded state, so that it expands and carbonizes to a desired volume during a fire to form a foam refractory layer. The joint can reliably seal the joint between the outer wall panels and prevent the fire from spreading through the joint.

  In addition, although the heat-expandable refractory material 3 is in contact with the joint material main body 1 at the end face in the width direction, its area is extremely small. The heat-expandable refractory material 3 is not added to the expansible refractory material 3, and the heat-expandable refractory material 3 does not expand unexpectedly due to heat during the manufacturing process.

  As the heat-resistant synthetic resin sheet, it is sufficient that the heat-expandable refractory material 3 does not expand due to heat from the joint material body 1 during the manufacturing process of the joint material A. It is not necessary to completely block the transfer of heat from the heat-expandable refractory material 3.

  Examples of such heat-resistant synthetic resin sheets include polyester resin sheets such as polyethylene terephthalate sheets and polybutylene terephthalate sheets, polyvinyl chloride sheets, polyvinylidene fluoride sheets, polyamide sheets, polycarbonate sheets, polystyrene sheets, polyacrylonitrile sheets, Polyethylene sheet, polypropylene sheet, polyvinyl alcohol sheet, ethylene-vinyl acetate resin sheet, ethylene-vinyl alcohol resin sheet, ethylene-methacrylic acid resin sheet, ionomer sheet, cellophane, etc., polyester resin sheet is preferred, polyethylene terephthalate sheet Is more preferable.

  If the thickness of the heat-resistant synthetic resin sheet is thin, the heat-expandable refractory material may expand during the manufacturing process due to heat from the joint material body, and if it is thick, the flexibility of the lip portion of the joint material decreases. Since the handleability of the joint material may be lowered, 6 to 100 μm is preferable, and 8 to 20 μm is more preferable.

  Further, a heat insulating sheet 4 is laminated and integrated on the lower surface of the sheet-like thermally expandable refractory material 3. The heat insulating sheet 4 prevents expansion toward the heat insulating sheet 4 when the heat expandable refractory material 3 expands due to heat at the time of fire, and the heat expandable refractory material 3 is placed in the direction opposite to the heat insulating sheet 4. The desired portion of the joint between the outer wall panels can be reliably closed by being reliably inflated.

  Further, the heat insulating sheet 4 prevents the thermally expandable refractory material 3 from receiving heat from the molten joint material body 1 during the manufacturing process of the joint material A and expanding.

  The heat insulating sheet 4 is not particularly limited as long as it is nonflammable and does not disappear in the event of a fire. For example, an aluminum glass cloth, a metal sheet, or the like obtained by bonding and integrating glass fibers in an aluminum sheet in a lattice shape. The above-mentioned aluminum glass cloth is preferable.

  The thickness of the heat insulating sheet 4 is preferably 5 to 300 μm because the laminated sheet can hardly be deformed into an abnormal shape by an external force and the handleability of the laminated sheet can be improved.

  Furthermore, as shown in FIG. 2, a heat-adhesive synthetic resin sheet 5 may be laminated and integrated on the heat-resistant synthetic resin sheet 2. As described above, the heat-adhesive synthetic resin sheet 5 is laminated on the heat-resistant synthetic resin sheet 2, so that the thermally expandable refractory material 3 can be reliably attached to the joint material body 1 through the heat-adhesive synthetic resin sheet 5. Can be integrated.

  Therefore, the heat-expandable refractory material 3 can be reliably disposed in the joint between the outer wall panels even after a long period of time has elapsed since the joint material A was disposed in the joint between the outer wall panels. In the event of a fire, the heat-expandable refractory material 3 expands and carbonizes to form a foam refractory layer. This foam refractory layer can reliably seal the joints between the outer wall panels and prevent the fire from spreading through the joints. it can.

  In addition, as shown in FIG. 3, the heat-adhesive synthetic resin sheet 6 may be laminated and integrated on the heat insulating sheet 4. Thus, by laminating the heat-adhesive synthetic resin sheet 6 on the heat insulating sheet 4, the thermally expandable refractory material 3 is reliably integrated with the joint material body 1 via the heat-adhesive synthetic resin sheet 6. Can be made. In addition, you may laminate | stack the heat bondable synthetic resin sheet 6 only on the heat insulation sheet 4, without laminating | stacking the heat bondable synthetic resin sheet 5 on the heat resistant synthetic resin sheet 2. FIG.

  As the synthetic resin constituting the heat-adhesive synthetic resin sheets 5 and 6, the heat-adhesive synthetic resin sheets 5 and 6 are the heat-resistant synthetic resin sheet 2 or the heat insulating sheet 4 and both the joint material body 1 and the joint. What is necessary is just to be able to integrate by the heat | fever in the manufacturing process of the material A, For example, polyolefin resin, such as a polyethylene-type resin and a polypropylene resin, is mentioned, A polyethylene-type resin is preferable.

  The polyethylene resin is not particularly limited, and examples thereof include a low density polyethylene resin, a medium density polyethylene resin, a high density polyethylene resin, a linear low density polyethylene resin, a linear medium density polyethylene resin, and a direct resin. Examples include linear high-density polyethylene resins, which may be used alone or in combination.

  It does not specifically limit as a polypropylene resin, For example, a propylene homopolymer, the copolymer of a propylene and another olefin, etc. are mentioned, It may be used independently or 2 or more types may be used together. Further, the copolymer of propylene and other olefins may be any of a block copolymer, a random copolymer, and a random block copolymer.

  Examples of the olefin copolymerized with propylene include α such as ethylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-nonene and 1-decene. -Olefin etc. are mentioned.

  In the joint material A, the case where the thermally expandable refractory material 3 and the heat insulating sheet 4 are laminated and integrated has been described, but the heat expandable refractory material 3 and the heat insulating sheet 4 may not be integrated.

  Next, a method for manufacturing the joint material A will be described. It does not specifically limit as a manufacturing method of the joint material A, For example, the following method is employable. As shown in FIG. 4, the extruders 71a and 71b for melting and kneading the rubber resin constituting the joint material body are connected to the extrusion head 72, and the extrusion die 73 is connected to the extrusion head 72. A manufacturing apparatus is prepared. Note that one extruder may be connected to the extrusion head 72.

  On the other hand, a sheet-like and long heat-expandable refractory material 3 is prepared according to the above-described procedure, and a heat-resistant synthetic resin sheet is extruded over the entire upper surface of the sheet-like heat-expandable refractory material 3 for general purpose such as extrusion lamination. The sheet is thermally integrated using the procedure, and the heat-insulating sheet 4 is laminated and integrated on the entire lower surface of the sheet-like thermally expandable refractory material 3 using a general procedure to produce a long laminated sheet B. To do.

  Next, the rubber resin constituting the joint material body 1 is supplied to the extruders 71a and 71b, melted and kneaded, supplied to the extrusion die 73 through the extrusion head 72, and the laminated sheet guide 72a is supplied to the extrusion head 72. The long laminated sheet B is continuously supplied via the extrusion resin 71, and the rubber resin extruded from the extruders 71a and 71b is used as an extruded product body by the extrusion die 73. The columnar part 11 and both sides of the columnar part 11 Are molded into the shape of a joint material main body in which lip portions 12, 12... Are projected, and the laminated sheet B is merged into the joint material main body and then extruded from the extrusion die 73. The long joint material A in which the laminated sheet B is continuously embedded in the length direction inside the material main body can be continuously manufactured.

  In the above manufacturing process, the heat-resistant synthetic resin sheet 2 is laminated and integrated on the upper surface of the thermally expandable refractory material 3 of the laminated sheet B, and the heat insulating sheet 4 is laminated and integrated on the lower surface of the thermally expandable refractory material 3. Therefore, the rubber-based resin melted in the extrusion die 73 and the heat-expandable refractory material 3 are not directly in contact with each other except at the end face in the width direction of the heat-expandable refractory material 3, and the heat-expandable The refractory material 3 is not heated and expanded by the heat of the molten rubber-based resin, and the thermally expandable refractory material 3 is embedded in the joint material body 1 in a non-expanded state.

  Here, although the manufacturing method of the joint material in the case where a heat-bonding synthetic resin sheet is not laminated on both the heat-resistant synthetic resin sheet 2 and the heat-insulating sheet 4 has been described above, either the heat-resistant synthetic resin sheet 2 or the heat-insulating sheet 4 In the case of laminating a heat-adhesive synthetic resin sheet on either or both, a heat-adhesive synthetic resin sheet is applied to either one or both of the heat-resistant synthetic resin sheet 2 and the heat-insulating sheet 4 of the laminated sheet B in a general manner. The laminated sheet B may be supplied to the extrusion head 72 after being laminated and integrated.

  As described above, when the heat-adhesive synthetic resin sheets 5 and 6 are laminated and integrated on either one or both of the heat-resistant synthetic resin sheet 2 and the heat insulating sheet 4 of the laminated sheet B, the laminated sheet is not subjected to adhesion treatment. However, the heat-adhesive synthetic resin sheets 5 and 6 are melted by the heat of the molten rubber-based resin, and the thermally expandable refractory material 3 is integrated with the joint material body 1 through the heat-adhesive synthetic resin sheets 5 and 6. It can be made.

  In the above description, the case where the thermally expandable refractory material 3 and the heat insulating sheet 4 constituting the laminated sheet B are integrated is described. However, the heat expandable refractory material 3 and the heat insulating sheet 4 are not integrated. Also good.

  Next, how to use the joint material A will be described. As shown in FIG. 5, for example, the joint material A is loaded and disposed in a joint C1 formed between the outer wall panels C and C with the lip portions 12a to 12c being elastically bent. Used. The heat insulating sheet 4 of the joint material A (the lip portion 12c of the joint material body 1) is disposed on the indoor side. As shown in FIG. 6, a general-purpose caulking material D may be filled into the joint C1 between the outer wall panels C and C from the outdoor side.

  However, when a fire occurs in a neighboring house or the like, the flame hits the outer wall panel C, and the joint material A is constituted by the heat of the heated outer wall panel C or by the flame directly contacting the joint material A. The rubber-based resin, that is, the joint material main body 1 is burned or melted and disappeared, and the heat-expandable refractory material 3 is expanded and carbonized as desired by the heat or flame of the outer wall panel C, and the outer wall panel C, A foamed refractory layer is formed along the shape of the joint C1 between the Cs. The foamed refractory layer seals the joint C1 formed between the outer wall panels C, C, and the like, and a flame enters the indoor side through the joint C1. It is possible to prevent the spread of fire into the room.

  In the joint material A, the case where the laminated sheet B is embedded in the joint material main body 1 in a state of crossing the columnar part 11 in the center left and right lip portions 12b and 12b in the vertical direction is shown. B may be embedded in any of the left and right lip portions 12 of the left and right lip portions 12a to 12c, and more than one laminated sheet B is embedded in the joint material body 1 instead of one. Also good.

  In the joint material A, the case where the laminated sheet B is embedded in the joint material main body 1 has been described. However, the laminated sheet B does not need to be embedded in the joint material main body 1; It suffices if it is integrated with. In addition, in the following description, about the structure similar to the joint material A and the lamination sheet B demonstrated above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  Specifically, as shown in FIG. 7, a laminated sheet B in which the heat-resistant synthetic resin sheet 2, the thermally expandable refractory material 3, and the heat insulating sheet 4 are laminated and integrated in this order on the joint material body 1, The heat insulating sheet 4 may be integrated in a state in which the heat insulating sheet 4 is exposed at the lower end surface of the left and right lip portions 12b at the center in the vertical direction of the joint material body 1 in a state of crossing the columnar portion 11. In addition, it is preferable that the lower end surface of the left-right lip part 12b and the lower end surface of the heat insulation sheet 4 of the lamination sheet B are flush. A heat-adhesive synthetic resin sheet 5 may be laminated and integrated on the heat-resistant synthetic resin sheet 2.

  Further, as shown in FIG. 8, a laminated sheet B in which a heat-resistant synthetic resin sheet 2, a heat-expandable refractory material 3 and a heat-insulating sheet 4 are laminated and integrated in this order on the joint material body 1 is a columnar portion 11. The heat-resistant synthetic resin sheet 2 may be integrated in a state where the upper end surface of the left and right lip portions 12b in the center in the vertical direction of the joint material body 1 is exposed. In addition, it is preferable that the upper end surface of the left-right lip | rip part 12b and the upper end surface of the heat resistant synthetic resin sheet 2 of the lamination sheet B are flush. A heat-adhesive synthetic resin sheet 6 may be laminated and integrated on the heat insulating sheet 4.

  Furthermore, as shown in FIG. 9, a laminated sheet B in which the heat-resistant synthetic resin sheet 2, the heat-expandable refractory material 3 and the heat-insulating sheet 4 are laminated and integrated in this order on the joint material body 1 is a columnar portion 11. The heat-resistant synthetic resin sheet 2 may be integrated in a state where the upper end surfaces of the left and right lip portions 12a on the uppermost side of the joint material body 1 are exposed. In addition, it is preferable that the upper end surface of the left-right lip part 12a and the upper end surface of the heat-resistant synthetic resin sheet 2 of the laminated sheet B are flush with each other. A heat-adhesive synthetic resin sheet 6 may be laminated and integrated on the heat insulating sheet 4.

  Then, as shown in FIG. 10, a laminated sheet B in which the heat-resistant synthetic resin sheet 2, the heat-expandable refractory material 3 and the heat-insulating sheet 4 are laminated and integrated in this order on the joint material main body 1 is a columnar portion 11. The heat insulating sheet 4 may be integrated in a state where the lower end surfaces of the left and right lip portions 12c on the lowermost side of the joint material body 1 are exposed. In addition, it is preferable that the lower end surface of the left-right lip part 12c and the lower end surface of the heat insulation sheet 4 of the lamination sheet B are flush. A heat-adhesive synthetic resin sheet 5 may be laminated and integrated on the heat-resistant synthetic resin sheet 2.

  In the above, the case where the joint material is manufactured by extrusion molding has been described, but the form of the extruded product main body is a columnar portion 11 and lip portions 12, 12... Projecting on both sides of the columnar portion 11. It is not necessary to be the joint material body 1 thus formed, and may be a desired shape such as a columnar shape, an elliptical columnar shape, or a prismatic shape.

12 (12a-12c) Lip 1 Joint body 2 Heat-resistant synthetic resin sheet 3 Thermally expansive refractory material 4 Thermal insulation sheets 5 and 6 Thermal adhesive synthetic resin sheet
11 Columnar part
71a extruder
72 Extrusion head
72a Laminated sheet guide
73 Extrusion die A Joint material B Laminated sheet C Exterior wall panel
C1 joint

Claims (7)

A laminated sheet in which a heat-resistant synthetic resin sheet, a heat-expandable refractory material, and a heat-insulating sheet are laminated in this order is integrated with the joint material main body made of rubber-based resin, with lip portions protruding from both sides of the columnar part. Joint material characterized by being made . The joint material according to claim 1, wherein the heat-resistant synthetic resin sheet is a polyethylene terephthalate sheet. The joint material according to claim 1 or 2, wherein a heat-adhesive synthetic resin sheet is laminated on the heat-resistant synthetic resin sheet. The joint material according to any one of claims 1 to 3 , wherein a heat-adhesive synthetic resin sheet is laminated on the heat insulating sheet. The joint material according to claim 3 or 4, wherein the heat-adhesive synthetic resin sheet is a polyethylene resin sheet. A rubber-based resin is supplied to an extruder, melt-kneaded, supplied to an extrusion die, and a laminated sheet obtained by laminating a heat-resistant synthetic resin sheet, a heat-expandable refractory material, and a heat-insulating sheet in this order is added to the extrusion die. Supplying and extruding the rubber-based resin into the form of a joint material body having lip portions projecting from both sides of the columnar part to produce the joint material by integrating the laminated sheet with the joint material body. A method for producing joint materials . The method for producing a joint material according to claim 6, wherein a heat-adhesive synthetic resin sheet is laminated and integrated on a heat-resistant synthetic resin sheet of the laminated sheet.

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