Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1985-07-16
1987-03-10
Dawson, Robert A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
239 8, 264121, B27N 302
Patent
active
046489207
ABSTRACT:
A process for manufacturing batt-type insulation from loose fibrous particles is provided. A stream of carrier air and loose fiber insulation particles is introduced into a nozzle. The nozzle includes a reducing section tapering from the diameter of a body portion to an exit portion having a diameter about one-third of the main body. An auxiliary stream of gas is injected into the reduced exit portion of the nozzle to aid in the movement of fibrous material through the exit portion. The gas is introduced by an injector tube along the inside surface of the exit portion of the nozzle. The compressed fibers are surrounded by high pressure gas and are expanded as they exit from the nozzle by the expanding gas pressure. A stream of liquid adhesive is injected in a spray pattern within the exit portion so that all fiber particles passing through the nozzle will be thoroughly wetted. The flow of adhesive-wetted fibrous insulation particles is deposited onto the surface of a desired area, such as a mold, to produce a built-up layer of adhesive-wetted fibers which, when set, will form a batt of insulation material. The insulation material may be deposited on a continuously moving conveyor so as to produce an elongated continuous batt. The insulation material may be deposited on a backing material such as paper or foil and may be sent through a drying oven.
REFERENCES:
patent: 4081501 (1978-03-01), Muther
patent: 4099296 (1978-07-01), Gustavsson
patent: 4164532 (1979-08-01), Piazza
patent: 4168959 (1979-09-01), Loeffler
patent: 4263033 (1981-04-01), Michalek
patent: 4272935 (1981-06-01), Lukas et al.
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