WATERPROOF VENTILATION STRUCTURE, WATERPROOF VENTILATION MEMBER, AND WATERPROOF AIR-PERMEABLE MEMBRANE

WATERPROOF VENTILATION STRUCTURE, WATERPROOF VENTILATION MEMBER, AND WATERPROOF AIR-PERMEABLE MEMBRANE

A waterproof ventilation structure according to the present invention includes: a housing having an interior space and an opening communicating the interior space with an exterior space; and a waterproof air-permeable membrane covering the opening. The waterproof air-permeable membrane is a layered...

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1. Verfasser: FURUUCHI KOUJI
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LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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description A waterproof ventilation structure according to the present invention includes: a housing having an interior space and an opening communicating the interior space with an exterior space; and a waterproof air-permeable membrane covering the opening. The waterproof air-permeable membrane is a layered product including a first stretched porous polytetrafluoroethylene (PTFE) membrane containing a filler and a second stretched porous PTFE membrane not containing a filler. The waterproof air-permeable membrane is disposed so that the second stretched porous PTFE membrane is located closer to the interior space than the first stretched porous PTFE membrane. The present invention provides a waterproof ventilation structure configured such that a filler is less likely to fall in a housing.
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subjects LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
title WATERPROOF VENTILATION STRUCTURE, WATERPROOF VENTILATION MEMBER, AND WATERPROOF AIR-PERMEABLE MEMBRANE
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