Plastic and nonmetallic article shaping or treating: processes – With step of cleaning – polishing – or preconditioning...
Patent
1978-02-21
1979-04-03
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
With step of cleaning, polishing, or preconditioning...
264 402, 264 465, 264 51, 264261, B29D 2704
Patent
active
041477464
ABSTRACT:
An improvement in the generation of foam from a mixture of foam-forming material in a structure having a preferred configuration. Conveying means are used to convey the structure along a horizontal path. A plurality of foam gun heads are mounted in spaced relationship to each other over and transverse to said horizontal path. Each foam gun head includes a foam dispensing outlet and valve means for controlling the discharges of the foam-forming materials therefrom. First, sensing means are provided upstream of the foam dispensing outlets for sensing the passage of the structure thereby. A plurality of second sensing means are positioned upstream of the foam dispensing outlets in spaced relationship to each other in a direction transverse to the horizontal path, each one of the second sensing means being associated with one foam gun head for sensing the presence of the structure in a vertical direction. The valve means in a foam gun head is opened in response to the first sensing means sensing the structure and its associated second sensing means also sensing the structure. The valve means of a given foam gun head is closed in response to its associated second sensing means detecting the absence of structure.
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Chiocchio Louis R.
Dever, Jr. Gerald V.
Anderson Philip
Burdick Bruce E.
Clements Donald F.
O'Day Thomas P.
Olin Corporation
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