WO1998058704A1 - Feuille ignifuge, son procede d'elaboration et structure de protection contre le feu - Google Patents
Feuille ignifuge, son procede d'elaboration et structure de protection contre le feu Download PDFInfo
- Publication number
- WO1998058704A1 WO1998058704A1 PCT/JP1998/002800 JP9802800W WO9858704A1 WO 1998058704 A1 WO1998058704 A1 WO 1998058704A1 JP 9802800 W JP9802800 W JP 9802800W WO 9858704 A1 WO9858704 A1 WO 9858704A1
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- WIPO (PCT)
- Prior art keywords
- sheet
- fire
- rubber
- fire protection
- cable
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/06—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/02—Layered products comprising a layer of natural or synthetic rubber with fibres or particles being present as additives in the layer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
- H02G3/0412—Heat or fire protective means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/048—Natural or synthetic rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
Definitions
- the present invention is used to prevent electric wires, cable, or resin laid in cable racks of cavities, buildings, etc.
- the present invention relates to a fire protection sheet and a method for mounting the same.
- the present invention provides a fire prevention ifi for a cable penetration portion through which a cable such as a power cable and a communication cable penetrates on a wall or a floor of a fire protection section of a building, and lays the inside of a pit or a metal duct. It relates to fire prevention Si for preventing the spread of burned wires and cables.
- This specification is based on Japanese Patent Application Nos. 9-116 92 49, 9-1, 08, 105, and 9-1, 2 8 7 3 7 9 It is based on Japanese Patent Application No. 10-320234, and the contents of these Japanese patents are incorporated as a part of this specification. Background art
- the first object of the present invention is to easily and reliably prevent electric wires and cables from being burned in the event of a fire and becoming a plate, regardless of whether they are new or existing.
- the object is to obtain a fire protection sheet.
- Another object of the present invention is to provide a fire prevention device for a cable penetration portion which has solved various disadvantages of the conventional fire protection system.
- Still another object of the present invention is to prevent the spread of a cable or the like laid inside a pit or a metal duct, and to reduce the time required for updating or expanding the cable or the like.
- the goal is to get a cape le fire protection that can be done. Disclosure of the invention
- the present invention provides a 0.1 to 3 mm thick rubber sheet having an oxygen index of 28 or more and a hydrogen halide gas generation amount of 0 to 350 mg Zg, and a thickness of 15 to 20 O
- This is a fire protection sheet in which at least one metal sheet of ⁇ m is laminated, and the above-mentioned problem is solved by covering and surrounding electric wires, cables and the like with this fire prevention sheet.
- the metal sheet and the rubber sheet of the fire protection sheet can be exposed on the front and back surfaces, and the surface dimension coefficient of each of these sheets can be set to 0.5 or more.
- polyolefin used as an admixture for the rubber sheet of the fire prevention sheet is --
- a blend or a polychloroprene blend is preferred.
- the above-mentioned problem is that the oxygen index is 28 or more and the amount of hydrogen halide gas generated during combustion is 8 Om gZg or more.
- the problem can also be solved by using a fire sheet made by laminating one or more metal sheets with each other, and covering and surrounding the electric wires and cables with the fire sheet.
- this fire prevention sheet has an IEC 332-3 category 1 C fuel: ⁇ Electrical fire prevention effect that is higher than the level that does not allow the fire and burnout of wires and cables that are burnt by category 1 A fuel tests. Desirably.
- a polychlorophenylene admixture is suitable as the admixture constituting the rubber sheet of the fire prevention sheet.
- a thermally foamable rubber mixture having an oxygen index of 28 or more, generating no hydrogen hydride power, and having a foaming degree of 4 times or more has a thickness of 0.1 to 0.5 mm.
- This fire protection sheet was prepared by laminating at least one laminated rubber sheet with a thickness of 0.2 to 3 mm and a metal sheet with a thickness of 15 to 200 m, which was formed by coating both sides of a woven fabric.
- the problem can also be solved by covering and surrounding electric wires and cables with a sheet.
- a sheet in which a flame-retardant plastic film having a size coefficient of 0.5 or more may be attached to the surface of the metal sheet.
- a metal sheet with a thickness of 15 to 350 m is laminated on a rubber sheet with a thickness of 0.1 to 3 mm with an oxygen index of 28 or more and an amount of generated hydrogen halide of 0 to 35 Om gZg,
- a dark anticorrosion material is layered on top of this and laminated and integrated to form a flat ⁇ ⁇ ! Dog.
- the metal sheet 3 ⁇ 4 ⁇ is attached to the rubber sheet and dark anticorrosion fiber.
- This fire sheet is wrapped around a long object so that its long sides are almost perpendicular to each other. When wrapping the sheet, do not expose the short side of the wrapped fire sheet to the surface. Can be attached by folding inward. Furthermore, fire protection -
- one side of the short side of the sheet and the other side be folded over each other, and the overlap of the folded over be 3 cm or more.
- the cable of the penetration portion is surrounded by the first fire protection sheet, and the opening portion of the penetration portion is closed by the second fire protection sheet from both sides thereof, whereby the first fire protection sheet is closed.
- 5fe ⁇ of the second fire protection sheet was superimposed on the first fire protection sheet, and the space between the superposed parts was filled with a non-curable heat-resistant seal.
- the first and second fire protection sheets are fire protection screws 1 at a cable penetration portion using a laminated sheet of a flame-retardant rubber sheet and a metal sheet.
- the present invention is a cable fire prevention device, wherein the cable laid inside the pit is surrounded by a fire prevention sheet. It is desirable to place a sandbag on the fire protection sheet.
- FIG. 1 is a schematic sectional view showing an example of the fire protection sheet of the present invention.
- FIG. 2 is a schematic sectional view showing another example of the fire protection sheet of the present invention.
- FIG. 3 is a schematic sectional view showing still another example of the fire protection sheet of the present invention.
- FIG. 4 is a schematic diagram showing a combustion type test using a Steiner Tunnel horizontal fuel cell according to the present invention.
- FIG. 5 is a schematic configuration diagram showing a cable vertical fuel test according to the present invention.
- FIG. 6 is a configuration diagram showing an example of a use state of the fire prevention sheet of the present invention.
- FIG. 7 is a schematic configuration diagram illustrating an example of the fire protection sheet of the present invention.
- FIG. 8 is a schematic elliptical view showing an example of a method for attaching a fire protection sheet of the present invention.
- FIG. 9 is a schematic sectional view showing an example of the fire prevention device of the present invention.
- FIG. 10 is a schematic cross-sectional view of one example of the fire prevention of the cable of the present invention as viewed from the direction in which the cable extends.
- FIG. 1 shows an example of the fire protection sheet of the present invention.
- reference numeral 1 denotes a rubber sheet, and this rubber sheet 1 is laminated and integrated with a metal sheet 2 to form a fire protection sheet 3. ing.
- the rubber mixture constituting the rubber sheet 1 has a high flame retardancy having an oxygen index (0I) of 28 or more, preferably 30, and more preferably 35 or more.
- the oxygen index in this specification is based on the measurement method specified in JIS K7201, and the amount of hydrogen halide gas generated during combustion is based on the measurement method specified in IEC-754-1.
- the fire protection sheet 3 itself becomes flammable and the effect of preventing fire spread becomes insufficient.
- the thickness of the rubber sheet 1 is 0.1 to 3 mm, preferably 0.5 to 3 mm. If it is less than 0.1 mm, the effect of preventing fire spread cannot be obtained, and if it exceeds 3 mm, the sheet itself will overlap and the handling will be poor.
- Examples of the rubber mixture that forms the rubber 1 include those that generate hydrogen halide gas during combustion: and those that do not generate hydrogen halide gas.
- Examples of those that generate hydrogen halide gas include, for example, Polychlorov. Rubber-based admixtures such as lene, chlorinated polyethylene, and chlorosulfonated polyethylene, or non-halogen rubbers such as nitrile, butyl, ethylene propylene, and natural rubber And blends containing halogen-based flame retardant ij. This type of admixture generates hydrogen halide gas when burned.
- Rubber mixtures that do not generate hydrogen halide gas include petilgum and ethylene.
- Non-halogen rubbers such as propylene rubber and natural rubber, and a large amount of non-halogen-based IJ containing a water-free non-arsenic compound such as aluminum hydroxide and hydroxymagnesium hydroxide.
- a rubber blend which sometimes generates a hydrogen halide gas during combustion a polychloroprene blend is preferred.
- magnesium hydroxide is added to 100 parts by weight of chloropyrene rubber. 0 to 200 parts by weight, antimony oxide 5 to 50 parts by weight, phosphate frit 5 to 50 parts by weight, antioxidant 0.1 to 5 parts by weight, inorganic filler 10 to 100 parts by weight
- the admixture containing 5 to 50 parts by weight of carbon black is carbonized and solidified after the rubber sheet 1 burns. preferable.
- a polyolefin mixture is preferable.
- EPM ethylene propylene rubber
- EPDM polyethylene propylene jen rubber
- An admixture containing 5 parts by weight of carbon black and 5 to 50 parts by weight of carbon black is preferred. This admixture also has the property of being carbonized and solidified after burning.
- the metal sheet 2 is a metal foil of 1160 ° C or more such as iron, steel, copper, copper alloy, aluminum, and aluminum alloy, and has a thickness of 15 to 200 ° C. m is used.
- Metals with a temperature of less than 600 ° C are unsuitable because they melt in a fire and cannot retain dogs. If the thickness is less than 15 m, the effect of the metal sheet 2 cannot be obtained, and if it exceeds 200 m, the flexibility of the fire protection sheet 3 is reduced, which causes inconvenience in handling.
- the lamination and integration of the rubber sheet 1 and the metal sheet 2 can be easily performed using an adhesive such as a rubber-based adhesive.
- the dimensions of the fire protection sheet 3 are not particularly limited, but a roll-shaped sheet having a width of 40 to 100 cm and a length of 10 to 2 Om is generally required in terms of productivity and workability. Is preferred. --
- FIG. 2 shows another example of the fire protection sheet of the present invention.
- the fire protection sheet 3 of this embodiment is obtained by laminating and integrating rubber sheets 1 and 1 on both sides of a metal sheet 2.
- FIG. 3 shows still another example of the fire protection sheet of the present invention.
- reference numeral ⁇ denotes a laminated rubber sheet, and the laminated rubber sheet 1 ′ is laminated and integrated with the metal sheet 2. It is fire protection sheet 3.
- the laminated rubber sheet 1 ′ is formed by applying a thermally foamable rubber mixture 1 a to both sides of a woven fabric 1 b.
- the above thermally foamable rubber mixture 1a has a high flame retardancy of 28 or more, preferably 50 or more, and does not generate hydrogen halide gas such as hydrogen chloride at the time of combustion: It is made of an admixture that has the property of foaming when heated and having a foaming degree of 4 times or more and solidifying.
- the fire protection sheet 3 itself becomes flammable and the effect of preventing fire spread becomes insufficient. Also, the generation of hydrogen halide gas is not preferable because it corrodes and degrades various metal members other than electric wires and cables. Further, if the degree of foaming is less than 4 times, the heat insulation effect at the time of burning is insufficient, which is disadvantageous.
- heat-foamable rubber compound examples include rubber containing no halogen element, such as ethylene glycol, ethylene propylene rubber, natural rubber, and ethylene monoacetate copolymer.
- rubber containing no halogen element such as ethylene glycol, ethylene propylene rubber, natural rubber, and ethylene monoacetate copolymer.
- a large amount of a water-containing non-aqueous compound such as aluminum or magnesium hydroxide is blended with a chemical compound such as azodicarbonamide, dinitronepentamethylene tetramamine, 4,4-year-old xybisbenzenesulfonylhydrazidof.
- foaming agents among which ethylene-vinyl acetate copolymer having a vinyl acetate content of 6 to 90% by weight as a main component, and the above-mentioned hydrous inorganic compound, foaming agent, Those containing an antioxidant, carbon black, etc. are preferred.
- the woven fabric 1b includes natural fibers such as cotton, hemp, and jute, nylon, and poly. It is made of synthetic fibers such as esters and acrylics, regenerated fibers such as human silk, and fibers such as glass fibers and power fibers, and has a thickness of 0.1 to 0.5 mm and a basis weight of 10— 300 gZm2 fiber is used.
- the heat-foamable rubber mixture 1a To apply the heat-foamable rubber mixture 1a to the fiber 1b, dissolve the mixture in an organic solvent such as xylen, toluene, MEK, etc. to make a paint with a solid content of 10 to 80% by weight. At least once on both sides of the woven fabric 1b, and then dried, so that the thickness of the obtained laminated rubber sheet 0 becomes 0.2 to 3 mm, preferably 0.3 to 0.5 mm. The amount is adjusted.
- an organic solvent such as xylen, toluene, MEK, etc.
- the thickness of the laminated rubber sheet 1 ' is less than 0.2 mm, the effect of preventing fire spread cannot be obtained, and if it exceeds 3 mm, heavy re-handling becomes unnecessary.
- the material and thickness of the metal sheet 2 in the example of the fire-prevention sheet 3 shown in FIG. 3 and the means for laminating and integrating the laminated sheet 1 ′ and the metal sheet 2 are as shown in FIG. 1 or FIG. This can be the same as the case of the metal sheet 2 in the example.
- the dimensions of the fire protection sheet 3 are not particularly limited, but usually a roll having a width of 40 to 10 Ocm and a length of 10 to 20 m is used for productivity and workability. It is preferable from the point of view.
- Such a fire prevention sheet has the following fire spread prevention effect.
- an electric wire and a cable having a fuel J ⁇ t production of 3 ⁇ 41 burned down in the fired vertical fuel test specified in IE EE 383 were used as a sample. It is installed inside the Steiner Tunnel horizontal fuel door shown in FIG. Steiner tunnel horizontal fuel; ⁇ door is specified in ASTM E84-91, and assumes fuel J ⁇ in a cave, etc., and is the most severe cable fuel: ⁇ test can be performed.
- the fire protection sheet according to the present invention has a length of about 4.5 m at the substantially central portion of the 7.32 m-long electric wires and cables 4, 4... Attached to the tray 5 of the Steiner tunnel horizontal fuel door.
- this fire prevention sheet also has the effect of preventing the spread of electric wires and cape les in the following vertical fire test.
- the fire sheet of the present invention is arranged and laminated so that the rubber sheet 1 and the metal sheet 2 are exposed on the front and back surfaces of the fire sheet 3, respectively.
- the H dimension coefficient (the ratio of the heat dissipation coefficient according to the H dimension to the black body) of each surface exposed to the outside of the laminated metal sheet 2 and the rubber sheet 1 is set to 0.5 or more, I dimension can be made easier.
- a method of applying a dark paint such as black, gray, black brown, or the like, a method of attaching a similar dark plastic film There is a method of coating the same dark colored rubber, a method of applying a roughening process to the surface of the metal sheet 2 by sandblasting, or the like.
- a rubber mixture containing a black colorant such as bonbon black as the rubber mixture constituting the rubber sheet 1.
- a dark colorant may be used in addition to the above.
- the fireproof sheet according to the present invention laminates and integrates the laminated rubber sheet 1 and the metal sheet 2 one by one. .
- a flame retardant plastic film having a HI dimension coefficient of 0.5 or more may be bonded to the surface of 2, so that the I dimension of heat is efficiently performed.
- the flame-retardant plastic film with an I dimension coefficient of 0.5 or more can be obtained by blending a large amount of water-free non-sprayed compounds such as aluminum hydroxide and magnesium hydroxide with resins such as polyethylene and polypropylene.
- the fire protection sheet 3 there is a method of directly attaching the fire protection sheet 3 to electric wires and cables themselves.
- the rubber sheet 1 of the fire prevention sheet 3 is wound inside and the metal sheet 2 is wound outside.
- the wires and cables may be single wires ⁇ [a set of wires and cables may be used.
- the fire prevention sheet 3 may be wound along the entire length of the electric wire or cable along the length thereof, but may be intermittently wound. In the case of intermittent winding, the spread of fire can be sufficiently prevented by setting the length of the wound portion to 0.5 m or more, preferably 1 m or more.
- a single winding of the fire protection sheet 3 is sufficient, but a double or multiple winding may be used. It is sufficient to fix the fire sheet 3 by using a wire or tape for binding.
- the width of the sheet 3 is at least 3 cm. .
- fire protection sheet 3 can be vertically attached to the electric wire, the cable 4, 4,... Or the cable rack 8;
- the fire prevention sheet 3 is a laminated sheet of the rubber sheet 1 or the laminated rubber sheet 1 ′ having high flame retardancy and the non-flammable metal sheet 2, it is difficult to dry the sheet in a fire.
- the pyrolysis gas generated when the electric wires and capes 4, 4,... Wrapped in the fire protection sheet 3 are heated are sealed inside and are not released to the outside.
- the inside is a kind of suffocation! Condition or lack of oxygen. Therefore, it is possible to prevent the internal wires and cables 4, 4 ... from burning.
- the rubber sheet 1 has an oxygen index of 28 or more, so it is difficult to extinguish the fuel J in the first place.
- the non-flammable, hydrogen halide gas fills the gap between the fire protection sheet 3 and the electric wires and the capillaries 4, 4 ⁇ ⁇ ⁇ ⁇ , and further promotes the lack of oxygen in the gap; Since it is anoxic ttl or highly oxygen-diluted, it is possible to reliably prevent the caple 4, 4, ⁇ ⁇ ⁇ from burning and prevent the spread of fire.
- the rubber sheet 1 in the case of a rubber sheet 1 made of a material that is carbonized and solidified at the time of combustion, such as a chloroprene rubber-based compound, the rubber sheet 1 is carbonized and solidified later and retains its shape ⁇ ! Even if the rubber sheet 1 burns, the air gap is kept sealed and the 3 ⁇ 4 ⁇ of the air is prevented after extinguishing. Furthermore, since the solidified material acts as a heat insulating material to block heat from the outside, it is possible to more reliably prevent electric wires and cables 4, 4 ⁇ ⁇ • from burning.
- the laminated rubber sheet 1 ′ heats, foams and solidifies when burning, so that when the laminated rubber sheet 1 ′ is heated, external heat is applied. Even if it burns, the sealed tt of the wires and cables 4, 4 ... is maintained, and the air is blocked.
- the solidified material acts as heat insulating material to block heat from the outside, so the heat of wires and cables .
- the metal sheet 2 retains the shape of the fire prevention sheet 3 even when it is in the form of a fiber, thereby closing the gaps around the wires and cables 4, 4,... To prevent the escape of hydrogen halide gas. Also reflects external heat. Furthermore, it prevents the pyrolysis gas from being continuously released along the longitudinal direction of the electric wire and the cable, and maintains the oxygen deficiency inside the void.
- the laminated rubber sheet 1 'or the metal sheet 2 When the H dimension coefficient of each surface of the rubber sheet 1, the laminated rubber sheet 1 'or the metal sheet 2 is set to 0.5 or more, it is generated by power supply to an electric wire or a cable in a normal state. Heat is not trapped in the space surrounded by the fire prevention sheet 3 and is efficiently radiated to the outside, so that the temperature rise of the wires and cables themselves is suppressed, and the allowable current does not decrease.
- the fire prevention sheet 3 of the present invention has good workability of winding around electric wires and cables 4, 4... And is easy to construct. Therefore, the laying route of electric wires and cables 4, 4,. In the case of a change in the product, it can be easily removed and wound around again for reuse.
- the fireproof sheet of the present invention is not limited to the examples shown in FIGS. 1 to 3, but may include one or more rubber sheets 1 or a laminated rubber sheet ⁇ and one or more metal sheets. It may be a combination of the above and lamination.
- a glass cloth can be embedded in the rubber sheet 1 as needed.
- the glass cloth use is made of a typical glass fiber tied-strand mat, a single bing cloth, a yarn cloth, and the like.
- the amount of glass cloth in the rubber sheet 1 is 2 to 20% by volume. ⁇ ⁇ ⁇ . .-
- a 600V CV 3 CX 38m cable 4, 4... is closely connected to a tray 5 with a width of 285mm and a length of 7.32m in the Steiner Tunnel horizontal type combustion unit shown in Fig. 4, and 10 cables are closely connected. And arranged. It has been confirmed in advance that this compound 4 will burn down in the vertical combustion of the cable of IEE 383.
- the length of the cable 4 is 7.32 m
- the fire protection sheet 3 is continued over a length of about 4.5 m from a position 1.6 m from the cable 4 on the side of the burner 6 to luff. "It was wound by winding. And the heat of No. 6 150,000 BTU 1 temple, 'Thigh time 40 minutes, in-furnace ⁇ ! The time until natural agility, the maximum length of the flame from the sheet edge, the presence or absence of ignition of the exposed portion of the cable 4 on the exit side, and the presence of damage to the fire prevention sheet 3 after completion were observed.
- the quality of the fire protection sheet 3 was evaluated as good if it could not be wound easily because the fire protection sheet 3 was heavy or hard, and if not, it was evaluated as good.
- Pb and Sn of the metal sheet in Table 2 have melting points of less than 60 CTC.
- a black epoxy resin paint was applied to both surfaces of the laminated sheet (Sample B) and the stainless steel foil of the laminated sheet, and dried to set the I dimension coefficient of both surfaces to 0.85.
- Stuff sinfuru le C was prepared.
- the conductor temperature of the sample surrounding the sheet of sample A was about 91 ° C
- that of the sample B sheet was about 105 ° C
- the sheet temperature of the sample C was about 105 ° C. It was about 92 ° C.
- the rubber sheet 1 and the metal sheet 2 shown in Tables 3 and 4 were laminated and integrated one by one to make 13 kinds of fire protection sheets 3 of the key shown in FIG.
- the above-mentioned fire protection sheet 3 is wrapped in a single wrap over a height of 80 cm from the standing position 30 cm above the pachinko 6 and a height of 80 cm, and in this state, category A fuel of IEC 332-3; (Burner burning time: 40 minutes, burner heat: 70,000 BTUZ time), wiping I was carried out to determine ifc ⁇ separation of the above cable, and whether the fireproof sheet 3 was removed after burning: ⁇ Observed.
- the quality of the fire protection sheet 3 was evaluated as good if it could not be wound easily because the fire protection sheet 3 was heavy or hard, and if not, it was evaluated as good.
- the melting points of Pb and Sn in the metal sheets in Table 4 are both lower than 600 ° C.
- Oxygen index 40 35 35 35 28 35 Hydrogen halide 80 or more 80 or more 80 or more 80 or more 80 or more 80 or more 80 or more 80 or more Efficiency ffi (mg / g)
- the laminated rubber sheet and the metal sheet shown in Table 5 were laminated one by one to make nine types of fireproof sheet 3 shown in FIG.
- Each of the laminated rubber sheets ⁇ was prepared by applying a coating of a heat-foamable rubber mixture of an ethylene-vinyl acetate copolymer to both sides of a 0.2-mm thick sponge and drying the mixture.
- the oxygen index and the degree of foaming were changed by changing the compounding amount of the water-free arsenic compound and the foaming agent in the product, and the thickness was changed by changing the number of application of the paint.
- a 600 V CV 3 CX 38 mm cable bridge 4, 4,... is closely connected to 10 trays 5 of 285 mm wide and 7.3 m long of the Steiner tunnel horizontal furnace shown in Fig. 4. Arranged in two rows. It has been confirmed in advance that this cable 4 will burn down completely in the IEEE 383 cable vertical combustion test.
- the length of the cable 4 was 7.32 m, and the fire-prevention sheet 3 was interposed and wound around the cable 4 over a length of about 4.5 m from a position 1.6 m away from the cable 4 on the side of the parner 6.
- the dimensional workability of the fire protection sheet 3 was evaluated as not good if the fire protection sheet 3 was not easy to be wound because of heavy or hard, etc., and if not, good.
- S ⁇ of the metal sheet has a melting point of less than 60 CTC.
- a fireproof sheet (sample C) was prepared by laminating a flame-retardant plastic film having a coefficient of 1 and 11 of 0.85.
- the conductor temperature of the sample B surrounding the sheet was about 89, and that of the sample A surrounding the sheet was about 105 C.
- the temperature of the sheet C was about 90 ° C.
- the mounting method of the present invention it is not necessary to seal the metal sheet.
- the mounting workability can be improved, and the work stability can be improved. Below, .-
- FIG. 7 shows an example of a fire protection sheet used in the mounting method of the present invention.
- reference numeral 1 denotes a rubber sheet, and a metal sheet 2 is superimposed on the rubber sheet 1.
- a dark-colored anti-corrosion film 9 as a dark-colored anti-corrosion material is laminated, and these are laminated and integrated to form a fire protection sheet 3.
- the rubber sheet 1 and the metal sheet 2 are the same as the rubber sheet 1 and the metal sheet 2 forming the fire protection sheet 3 shown in FIG. The detailed description of is omitted.
- the dark-colored anticorrosion film 9 in the fire protection sheet 3 shown in FIG. 7 has a dark color such as black, gray or black-brown, and is made of polyethylene, polyvinyl chloride, polyvinylidene chloride, ethylene-vinyl acetate copolymer, natural Films of rubber, chloroprene rubber, butyl rubber, etc., and films of rubber having a thickness of 20 to 10 O ⁇ m are used.
- the dark-colored anticorrosion film 9 preferably has a high anticorrosion property and is flame-retardant, and preferably contains a halogen-based flame retardant; ⁇ 3 ⁇ 4ij, a non-halogen flame-retardant U.
- the IP dimension coefficient (ratio of the heat dissipation coefficient according to the dimension to a black body) of the surface of the dark-colored anticorrosion film 9 be 0.5 or more so that the H dimension of heat is easy.
- Lamination and integration of the rubber sheet 1, the metal sheet 2, and the dark-colored anticorrosion film 9 can be easily performed using an adhesive such as a rubber-based adhesive.
- the shape of the fire-prevention sheet 3 in Fig. 7 is as follows: a flat dog is a rectangle, usually 40 to 100 cm in width and 10 to 20 m in length. It is preferable from the viewpoint of workability.
- the metal sheet 2 is positioned inside the ends of the rubber sheet 1 and the dark anticorrosion film 9, and As a result, the rubber sheet 1 and the dark-colored anticorrosion film 9 are directly attached to form ears.
- the width A where the rubber sheet 1 is directly attached to the dark-colored anticorrosive film 9 is 2 mm or more, and preferably 5 to 20 mm
- the fire protection sheet 3 shown in FIG. 7 has the same fire spread prevention effect as the fire protection sheet 3 shown in FIGS. 1 to 3.
- FIG. 8 a method of attaching the fire prevention sheet 3 of the present invention shown in FIG. 7 will be described with reference to FIG. 8 using a power cable housed in a cable rack as a long object to be attached.
- reference numeral 10 denotes a key 7 "lurack.
- This key 7" lurack 10 is extended and attached to the inside of a cave or the like by a mounting bracket or the like (not shown).
- the power cables 4, 4,... Are extended and laid on the cap rack 10, and the above-described fire prevention sheet 3 is wound by the following procedure.
- the long fire prevention sheet 3 shown in FIG. 7 is cut into a certain length in the width direction. Then, the cut fire-prevention sheet 3 is placed so that its long sides 3a, 3a are substantially perpendicular to the longitudinal direction of the cable rack 10 and the cross-shaped dog is in the shape of a letter. Bend it and wind it along the outer shape of the cable rack 10.
- the lower portions of the two short sides of the fire protection sheet 3 are bent upward by about 90 degrees, and then further downwardly bent by about 180 degrees to form a peak.
- the upper part of the short side is bent downward by about 90 degrees, and then further upward by about 180 degrees to form a valley.
- the overlapping margin is set to 3 cm or more, preferably 5 cm to 1 Ocm so that both of them can sufficiently enter each other to the depth of the peak or the valley.
- a band 11 such as a stainless steel belt for binding is squeezed from the wound fire protection sheet 3 and fixed.
- both sides of the short side of the fire protection sheet 3 cut in advance may be folded back, and then wound around the rack 10.
- the fire protection sheet 3 is sequentially wound around the long cable rack 10 in a row. However, there is a method of intermittently winding at a certain interval. -
- the length is 5 m or more, preferably 1 m or more, it is possible to sufficiently prevent the spread of fire by intermittent winding.
- Both sides or the center of the wrapped portion of the fire sheet 3 are filled with a flame-resistant putty with an oxygen index of 28 or more to close the gap between the fire sheet 3 and the electric wire and cable 4. Doing so is also effective.
- the fire protection sheet 3 can be wound directly on the electric wire or cable 4 by the above-described method.
- the fire protection sheet 3 shown in FIG. 7 is also a laminated sheet of the rubber sheet 1 having high flame retardancy and the non-flammable metal sheet 2, so that it is similar to the fire protection sheet 3 in FIG.
- the electric wires and the cables 4, 4 ... wrapped in the fire prevention sheet 3 are prevented from burning, and do not become a certain body, and the above-mentioned advanced fire spread prevention effect is exhibited.
- the metal sheet 2 since the metal sheet 2 is not exposed on the surface of the fire protection sheet 3 and the end faces of the long sides 3a, 3a, the metal sheet 1 can be obtained by devising the end face on the short side.
- the surface of the metal sheet 2 can be eliminated because the surface of the metal sheet 2 is covered with the anticorrosion rubber or film.
- the H-dimension coefficient of the surface of the dark-colored anticorrosion film 9 is set to 0.5 or more, the heat generated by supplying power to the wires and cables in the normal state does not stay inside the space wrapped in the fire protection sheet 3. Since the heat is efficiently radiated to the outside, the temperature rise of the wires and cables themselves is suppressed, and the allowable current does not decrease.
- the rubber sheet 1 is made of an admixture that does not generate hydrogen halide gas, no harmful hydrogen halide gas is generated during combustion, so that there is no danger due to this gas and it is safe.
- the ⁇ on both short sides of the fire protection sheet 3 wrapped around the mounting object are folded inward with each other;! —Because it does not appear on the cutting surface, it is not necessary to cut the metal sheet 2 and the installation work in a cave etc. becomes easy.
- the fire prevention sheet shown in Fig. 7 has good workability of winding around wires, cables, anti-corrosion gas pipes, etc., and is easy to construct. In such case, remove it easily and wrap it again for reuse. --0
- the fire prevention sheet 3 of the present invention is not limited to the example shown in FIG. 7, and may be a laminate in which one or more rubber sheets 1 and one or more metal sheets 2 are combined.
- a glass cloth can be embedded in the rubber sheet 1 as needed.
- the glass cloth chopped strand mat made of ordinary glass fiber, mouth bing cloth, yarn cloth, and the like are used, and the amount of glass cloth in the rubber sheet 1 is 2 to 20% M) t by volume. It is said.
- FIG. Fig. 9 shows an example of a fire protection structure at the wall penetration of a fire protection section of a building.
- reference numeral 12 denotes a fire-resistant wall such as a concrete wall, and the fire-resistant wall 12 is formed with an opening 13 having a rectangular cross section. The opening area of the opening 13 is usually set to not more than 0.
- a first fire prevention sheet 3A is wound around a portion of the power cables 4, 4,... Located at the opening 13.
- the first fire protection sheet 3A is the same as the fire protection sheet 3 of FIG. 1 or FIG. 3, and is a flame retardant rubber sheet 1 or a laminated rubber sheet of the first fire protection sheet 3A. It is wound so that the metal sheet 1 'is inside and the metal sheet 2 is outside.
- the first fire protection sheet 3A is wound around the first side of the fireproof wall 12 with the first fire protection sheet 3A of a predetermined size facing the back of the opening 13 as shown in FIG. In the vicinity of the center of the wall 12, insert two sheets of fire protection sheets 3 A, 3 A until they overlap by about 10 to 20 cm. By twisting and folding the edges of the sheet 3A to each other to form a weave # 4, this is sealed in a tubular shape and tied with several stainless steel bands 15, 15, ... It is done.
- the second flat fire protection sheet 3B is attached so as to be in contact with the first fire protection sheet 3A surrounding the power cables 4, 4,...
- Attachment of the second fire-prevention sheet 3B is carried out in such a manner that the periphery of the second fire-prevention sheet 3B is entirely covered with the C-type channel steel 16, 16, and the concrete bolts 17, 1. 7 ⁇ and fixed to the fire wall 1 2
- the second fire prevention sheet 3B is also attached so that the flame retardant rubber sheet 1 is exposed inside and the metal sheet 2 is exposed outside.
- FIG. 9 shows the connecting portion where the 3 ⁇ 43 ⁇ 4 of the second fire-prevention sheet 3B is in contact with the first fire-prevention sheet 3A, which surrounds the power cables 4, 4,.
- the second fire protection sheet 3B is bent by 2 to 5 cmHjt in width to form an L-shaped cross section, and the bent portion is placed on the first fire protection sheet 3A;) I have.
- a joint (gap) and a bent portion formed by the superposition are coated with a non-curable heat-resistant sealing material 18 to seal the joint.
- the non-curable heat-resistant sealing material 18 is a putty-like material composed of unvulcanized rubber such as polychloroprene, and a filler, rnm, 3 ⁇ 4 ⁇ , etc., and has a high oxygen index of so or more. It has flame retardancy, forms a solidified layer when heated to a high temperature, has high fire resistance, and is non-curable, so it has good workability and is easy to remove. Specifically, there is “F-Seal” (trade name) which is sold by Hazama.
- the uncured heat-resistant sealing material 18 is also used as the joint of the fixed portion of the second fire-prevention sheet 3 ⁇ to the wall 12, 5 1 of the first fire-prevention sheet 3 ⁇ and the power cable 4, 4. ... are also filled. Further, the whole or a part of the space surrounded by the first fire prevention sheet 3A may be filled with the sealing material 18.
- Such a fire prevention key 1 can be easily and easily constructed. That is, the raw material of the fire protection sheet 3 can be easily cut with scissors or the like, so that the first and second fire protection sheets 3A and 3B can be easily prepared.
- the first and second fire protection sheets 3 A and 3 B surround the cable rack 10 and the power cables 4, close the opening 13 of the fire-resistant wall 12, and use a non-curing heat-resistant material. The construction is completed only by filling the sealing material 18 into important places.
- the first The fire protection sheet 3A surrounds the whole, so there is no need for extra work.
- the curable seal material when adding, distributing, or exchanging the power cables 4, the curable seal material is not used, so the seal material 18 can be easily removed, and the stainless steel strands 15, 15 By simply opening 5 and opening the second fire prevention sheet 3B, the cable rack 6 can be exposed, and the work can be easily carried out.
- the fire prevention sheet 3 is extremely high as described above and has an effect of preventing fire spread, if the metal sheet 2 is made of stainless steel, it can withstand a high temperature of about 130 ° C. Despite being simpler, it exhibits the same 2-hour mjs fire protection performance as conventional fire protection.
- the cable and the penetrating part of the fire-resistant wall No. 2 described above but also the floor penetrating part or the wiring S penetrating part can be used in the same manner, and excellent fire prevention performance is exhibited.
- reference numeral 19 denotes a pit.
- a plurality of cables 4 laid inside the pit 19 are surrounded by a fire protection sheet 20, and a sandbag 21 is placed on the fire protection sheet 20. Put the pit lid 2 2 is covered by the lid.
- the sandbags 21 are placed on both sides of the fire protection sheet 20 surrounding the cables 4 laid inside the pit 19.
- the pit 19 here is for storing the cable 4 in the pit method which is one of the methods of laying the underground power cable, and concrete or the like is used to accommodate the cable 4 to be laid. It has been built in advance in the ground.
- the fire protection sheet 20 covers the surface portion of the outermost cable 4 among the Ne Si cable 4 laid inside the pit 19. Overturn It is installed and used in such a way that it surrounds m3 ⁇ 4 cables 4 in a lump. Further, the fire prevention sheet 20 is used by surrounding the cable 4 along the extension direction of the cable 4 over its entire length or intermittently.
- the length of the cape le 4 intermittently surrounded can be 0.5 m or more. It is preferable to be in the range of 2.Om to 5.Om. This is because in this range, a sufficient fire-prevention effect can be obtained by the fire prevention sheet, and the construction is easy. It is not preferable that the length of the group 4 which is intermittently surrounded is less than 0.5 m, because the effect of preventing the spread of fire cannot be sufficiently obtained.
- the sandbag 21 placed on such a fire protection sheet 20 is for holding down the fire protection sheet 20 and is placed so as to cover the area from to 0.5 mi3 ⁇ 4t of the fire protection sheet 20.
- the sandbag 21 is made of sand or the like packed in a bag or the like, and has an advantage that the sand and the like can be handled as one lump when moving.
- the fire prevention sheet 3 of FIG. 1 or FIG. 3 can be used.
- the respective sheets are arranged and laminated such that the rubber sheet 1 or the laminated rubber sheet and the metal sheet 2 are exposed on the front and back surfaces of the fire protection sheet 20 respectively.
- the surface exposed to the outside of the laminated metal sheet 2 and rubber sheet 1 or laminated rubber sheet 1 ′ has its H dimension coefficient (ratio of heat dissipation coefficient according to H dimension to black body). Can be set to 0.5 or more to facilitate the heat I dimension.
- H dimension coefficient ratio of heat dissipation coefficient according to H dimension to black body.
- a method of applying dark paint such as black, gray, black brown, or the like, or a similar dark plastic film is stuck.
- a rubber mixture containing a black colorant such as Ripbon black is used as the rubber mixture.
- a dark colored material may be used.
- the mire cables 4 laid inside the pit 19 are surrounded by the fire prevention sheet 20, so that the fire protection sheet 20 is required. Accordingly, it is possible to prevent the cape lile 4 from being fired in the event of a fire.
- the mil can be protected to protect the cable 4 from damage. Furthermore, in the fire prevention ⁇ i of the present invention, although the cables 4 of the book laid inside the pit 19 are encased in a lump, when both of them are released, the heat due to the energization causes the fire protection system. It is hard to stay inside the space inside the box 20 and efficiently radiated to the outside to suppress the rise in the conductor temperature, so that the allowable current of the cable 4 is unlikely to be low. Furthermore, when the fire prevention sheet 20 is made of a rubber sheet 1 or a laminated rubber sheet and a metal sheet 2 having an I dimension coefficient of 0.5 or more on each surface. However, since heat generated by feeding power to the cable 4 during normal times is unlikely to stay inside the space enclosed by the fire prevention sheet 20, the temperature rise of the electric wire or the cable 4 itself is suppressed, and the cable 4 is further reduced. Can hardly decrease the allowable current.
- the fire prevention sheet 20 prevents the cable 4 from being fired in the event of a fire
- the sand filled in the pit prevents the cable from burning. No need to fill the sand for installation, for example, when removing new sand or performing 50 ⁇ 1 such as renewing or expanding the cable 4, reducing the work of removing and filling the sand be able to.
- sandbags 21 are used to hold the fire protection sheet 20, for example, when installing or removing the fire protection sheet 20, sand and the like can be treated as one lump, and the pit 19 Inconveniences such as contamination of the surrounding area hardly occur, and workability is also improved.
- the fire prevention sheet of the present invention By wrapping it around the wire, it prevents the electric wire and cable from burning and exhibits an excellent fire spread prevention effect. Also, it is extremely easy to wind around wires and cables, and it is easy to remove and reuse. Furthermore, in normal times, the allowable current of the electric wire and the cape hull surrounded by the fire protection sheet does not decrease.
- the metal sheet is not exposed on all surfaces of the fire protection sheet mounted on a long mounting object such as an electric wire, a cable, and an anticorrosive gas pipe. .
- a long mounting object such as an electric wire, a cable, and an anticorrosive gas pipe.
- the fire prevention sheet and the method of mounting the same according to the present invention are useful for laying electric wires and cables in a cable rack such as a tunnel or a building.
- the net 1 is simple, the construction is easy, and it can be performed at low cost. In addition, it exhibits excellent fire protection performance equivalent to the fire protection kit. Furthermore, it can flexibly and easily respond to expansion and removal of cables. Also, since the construction is simple, it is possible to obtain an effect such as poor quality of fire prevention performance.
- the fire prevention sheet can prevent the fire in the event of the fire of the cable
- Wires and cables laid inside the pit or inside the metal duct can be used as a medium for spreading the fire and prevent the spread of the fire.
- the heat generated by the conduction is less likely to be trapped in the space inside the fire prevention sheet, and is efficiently radiated to the outside to suppress the rise in the conductor temperature. Therefore, it is possible to reduce the allowable current of the cable.
- the cable can be mi which can protect the cable from damage. Furthermore, since it is not necessary to use sand as in the case of fire prevention by a method of filling sand, for example, when performing new fire prevention, updating cables, or performing m, such as expansion The work efficiency is good and the workability is excellent.
- the fire protection system of the present invention is useful for laying a cable penetration portion or a pit type underground power cable on a wall or floor of a fire protection section of a building.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Laminated Bodies (AREA)
- Insulated Conductors (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98929652A EP0931568A1 (en) | 1997-06-25 | 1998-06-24 | Fire sheet, method of mounting same, and fire protection construction |
CA002264174A CA2264174A1 (en) | 1997-06-25 | 1998-06-24 | Fire sheet, method of mounting same, and fire protection construction |
AU79326/98A AU7932698A (en) | 1997-06-25 | 1998-06-24 | Fire sheet, method of mounting same, and fire protection construction |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/169294 | 1997-06-25 | ||
JP9169294A JPH119713A (ja) | 1997-06-25 | 1997-06-25 | 防火シート |
JP9/208105 | 1997-08-01 | ||
JP9208105A JPH1147297A (ja) | 1997-08-01 | 1997-08-01 | 防火シート |
JP09287379A JP3140407B2 (ja) | 1997-10-20 | 1997-10-20 | 防火シートおよびその取付方法 |
JP9/287379 | 1997-10-20 | ||
JP10/30234 | 1998-02-12 | ||
JP3023498A JP2892340B1 (ja) | 1998-02-12 | 1998-02-12 | 防火シート |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998058704A1 true WO1998058704A1 (fr) | 1998-12-30 |
Family
ID=27459203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/002800 WO1998058704A1 (fr) | 1997-06-25 | 1998-06-24 | Feuille ignifuge, son procede d'elaboration et structure de protection contre le feu |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0931568A1 (ja) |
AU (1) | AU7932698A (ja) |
CA (1) | CA2264174A1 (ja) |
WO (1) | WO1998058704A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7441565B2 (en) * | 2002-09-05 | 2008-10-28 | Tosetz Co., Ltd | Fire protection zone penetrating member and injection-molding method for the same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160279911A1 (en) * | 2015-03-24 | 2016-09-29 | Ansell Limited | Protective composite materials |
CN106150318A (zh) * | 2015-04-24 | 2016-11-23 | 贾淑景 | 可膨胀可隔热防火卷帘帘面 |
JP7097216B2 (ja) * | 2018-04-11 | 2022-07-07 | 株式会社古河テクノマテリアル | 延焼防止シート及びその製造方法 |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS57177317U (ja) * | 1981-04-30 | 1982-11-10 | ||
JPS61185443A (ja) * | 1985-02-14 | 1986-08-19 | 平岡織染株式会社 | 難燃性シ−ト材料 |
JPS631316A (ja) * | 1986-06-18 | 1988-01-06 | 三菱電線工業株式会社 | ケ−ブルの延焼防止方法並びにこれに使用する防火シ−ト |
JPS63130065U (ja) * | 1987-02-16 | 1988-08-25 | ||
JPS6430234A (en) | 1987-07-27 | 1989-02-01 | Matsushita Electronics Corp | Apparatus for manufacturing semiconductor device |
JPS6485755A (en) * | 1987-09-28 | 1989-03-30 | Sumitomo Electric Industries | Fire-resistant and heat-resistant plate |
JPH0190568U (ja) * | 1987-12-09 | 1989-06-14 | ||
JPH01130749U (ja) * | 1988-03-02 | 1989-09-05 | ||
JPH0470853A (ja) | 1990-07-12 | 1992-03-05 | Minolta Camera Co Ltd | ポリオレフィン樹脂被覆バインダー型キャリア |
JPH0736665A (ja) | 1993-07-22 | 1995-02-07 | Matsushita Electric Ind Co Ltd | 演算装置 |
JPH09169249A (ja) | 1995-12-19 | 1997-06-30 | Toyoda Gosei Co Ltd | 自動車用電気装置の取付構造 |
JPH09208105A (ja) | 1996-02-06 | 1997-08-12 | Ricoh Co Ltd | シート集積装置 |
JPH09287379A (ja) | 1996-04-22 | 1997-11-04 | Furukawa Co Ltd | さく岩機の打撃数検出装置 |
-
1998
- 1998-06-24 AU AU79326/98A patent/AU7932698A/en not_active Abandoned
- 1998-06-24 WO PCT/JP1998/002800 patent/WO1998058704A1/ja not_active Application Discontinuation
- 1998-06-24 EP EP98929652A patent/EP0931568A1/en not_active Withdrawn
- 1998-06-24 CA CA002264174A patent/CA2264174A1/en not_active Abandoned
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57177317U (ja) * | 1981-04-30 | 1982-11-10 | ||
JPS61185443A (ja) * | 1985-02-14 | 1986-08-19 | 平岡織染株式会社 | 難燃性シ−ト材料 |
JPS631316A (ja) * | 1986-06-18 | 1988-01-06 | 三菱電線工業株式会社 | ケ−ブルの延焼防止方法並びにこれに使用する防火シ−ト |
JPS63130065U (ja) * | 1987-02-16 | 1988-08-25 | ||
JPS6430234A (en) | 1987-07-27 | 1989-02-01 | Matsushita Electronics Corp | Apparatus for manufacturing semiconductor device |
JPS6485755A (en) * | 1987-09-28 | 1989-03-30 | Sumitomo Electric Industries | Fire-resistant and heat-resistant plate |
JPH0190568U (ja) * | 1987-12-09 | 1989-06-14 | ||
JPH01130749U (ja) * | 1988-03-02 | 1989-09-05 | ||
JPH0470853A (ja) | 1990-07-12 | 1992-03-05 | Minolta Camera Co Ltd | ポリオレフィン樹脂被覆バインダー型キャリア |
JPH0736665A (ja) | 1993-07-22 | 1995-02-07 | Matsushita Electric Ind Co Ltd | 演算装置 |
JPH09169249A (ja) | 1995-12-19 | 1997-06-30 | Toyoda Gosei Co Ltd | 自動車用電気装置の取付構造 |
JPH09208105A (ja) | 1996-02-06 | 1997-08-12 | Ricoh Co Ltd | シート集積装置 |
JPH09287379A (ja) | 1996-04-22 | 1997-11-04 | Furukawa Co Ltd | さく岩機の打撃数検出装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7441565B2 (en) * | 2002-09-05 | 2008-10-28 | Tosetz Co., Ltd | Fire protection zone penetrating member and injection-molding method for the same |
Also Published As
Publication number | Publication date |
---|---|
AU7932698A (en) | 1999-01-04 |
CA2264174A1 (en) | 1998-12-30 |
EP0931568A1 (en) | 1999-07-28 |
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