DIVIDING WALL PENETRATION DUCT AND METHOD OF USING THE SAME

PROBLEM TO BE SOLVED: To provide a novel dividing wall penetration duct which can be rapidly and securely fixed to dividing wall and does not emit harmful gases at the time of a fire. SOLUTION: The fire preventive penetration duct has a duct body 12 and a foamable inorganic film previously formed on...

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Bibliographische Detailangaben
Hauptverfasser:	FUJIMOTO KYOICHI, KISHINO HIDEKI, HAYASHI KOZO, SHIMIZU SHOHACHI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES BLASTING BUILDING CEILINGS CHEMISTRY CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYES ELECTRICITY ENGINEERING ELEMENTS AND UNITS FIRE-FIGHTING FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERATION HEATING HUMAN NECESSITIES INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES INSULATION OR OTHER PROTECTION OF BUILDINGS JOINTS OR FITTINGS FOR PIPES LIFE-SAVING LIGHTING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS PIPES POLISHES ROOFS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL USE OF MATERIALS AS ADHESIVES WALLS, e.g. PARTITIONS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a novel dividing wall penetration duct which can be rapidly and securely fixed to dividing wall and does not emit harmful gases at the time of a fire. SOLUTION: The fire preventive penetration duct has a duct body 12 and a foamable inorganic film previously formed on its outside surface. The foamable inorganic film includes an alkali silicate, zinc borate, and unfired vermiculite and a synthetic swellable mica and/or synthetic smectite. When this fire preventive penetration duct is inserted into a through-hole 17 formed in the dividing wall 15 and the duct body 12 is heated, the foamable inorganic film foams and an inorganic foam 14 is formed, by which the spacing between the through-hole 17 and the duct body 12 is filled. Consequently, the duct body 12 is securely fixed to the through-hole 17.