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AssigneeAB Volvo
InventorsBengt-Erik Ingemansson, Bertil E. Bjork, Jan E. Hedman, Knut G. Knutsson, Nils H. I. Larsson
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The invention relates to a container for fiberglass wool, as well as a method and apparatus for producing a continuous length of fiberglass wool and for filling the container through which a gas flows, e.g. a muffler, with said wool. The apparatus comprises a feeder means which advances multifiber thread to a nozzle into which compressed air is blown which imparts movement to the thread at the same time as the fibers of the thread are blown apart and entangled so as to form continuous wool. The wool is blown directly into the container while air is evacuated by a suction fan.
Method of inserting fiberglass wool into a space in a container, characterized in that a multifiber fiberglass thread is fed into one end of a nozzle and is advanced through the nozzle with the aid of compressed air which is blown into the nozzle and causes the fibers of the thread to separate and become entangled, so that the thread emerges from the other end of the nozzle as a continuous length of fiberglass wool, which is blown by the effect of the compressed air through an opening into the container space at the same time as air is evacuated from the space, there being a bonding agent between the fibers of the thread, and deflecting the thread to break up the bonding agent between the fibers of the thread before the thread is fed into the nozzle.
Method of inserting fiberglass wool into a space in a container to be included in a noise muffling system for a combustion engine, the container having an inner gas duct with a wall through which there is at least some gas flow, comprising feeding a multifiber fiberglass thread into one end of a nozzle and advancing the thread through the nozzle with the aid of compressed air which is blown into the nozzle and causes the fibers of the thread to separate and become entangled, so that the thread emerges from the other end of the nozzle as a continuous length of fiberglass wool, blowing the fiberglass wool through an opening in the container into a space between the gas duct and the container jacket at the same time that air is evacuated from said space through perforations in the duct with the aid of a suction fan connected to the duct, and after filling of the container, sealing the container opening at the same time that air is evacuated from the space filled with fiberglass wool.
Dependencies are inferred from the claim text.