SOUND-ABSORBING HOLLOW BODY FOR AN AIR SUPPLY

Hollow bodies for an air supply often prove unsatisfactory in terms of their sonic properties or their dirt accumulation behaviour. The invention relates to a sound-absorbing hollow body for an air supply, comprising a first external layer consisting of closed-cell polyolefin foam, a second internal...

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Hauptverfasser: BREITSCHEIDEL, ULRICH, ULB, HORST
Format: Patent
Sprache:eng ; fre ; ger
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creator BREITSCHEIDEL, ULRICH
ULB, HORST
description Hollow bodies for an air supply often prove unsatisfactory in terms of their sonic properties or their dirt accumulation behaviour. The invention relates to a sound-absorbing hollow body for an air supply, comprising a first external layer consisting of closed-cell polyolefin foam, a second internal layer consisting of closed-cell polyolefin foam and at least one additional layer, located between the internal and external layer and having a surface structure consisting of fibres, in particular a nonwoven. The inventive sound-absorbing hollow bodies are used in particular in the motor vehicle industry for air supplies.
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The invention relates to a sound-absorbing hollow body for an air supply, comprising a first external layer consisting of closed-cell polyolefin foam, a second internal layer consisting of closed-cell polyolefin foam and at least one additional layer, located between the internal and external layer and having a surface structure consisting of fibres, in particular a nonwoven. The inventive sound-absorbing hollow bodies are used in particular in the motor vehicle industry for air supplies.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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language eng ; fre ; ger
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subjects AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
BLASTING
COMBUSTION ENGINES
ENGINE PLANTS IN GENERAL
ENGINEERING ELEMENTS AND UNITS
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
JOINTS OR FITTINGS FOR PIPES
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
LIGHTING
MACHINES OR ENGINES IN GENERAL
MEANS FOR THERMAL INSULATION IN GENERAL
MECHANICAL ENGINEERING
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PIPES
PUNCHING METAL
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
STEAM ENGINES
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING
THERMAL INSULATION IN GENERAL
TRANSPORTING
WEAPONS
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
title SOUND-ABSORBING HOLLOW BODY FOR AN AIR SUPPLY
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