Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1976-12-13
1979-02-20
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
264 39, 521 78, 521917, 422133, C08N 930
Patent
active
041406613
ABSTRACT:
This invention relates to methods and apparatus for successively dispensing predetermined quantities of urea formaldehyde foamed resin mixture having as constituents a resin component and a hardener component in which a prefoamed one of said components and the other component are independently fed under pressure to a mixing chamber where they are mixed and from which, they are dispensed, any residue of the urea formaldehyde foamed resin mixture left in the mixing chamber after said predetermined quantity has been dispensed therefrom being swept and removed prior to the mixing chamber being supplied with the next batch of said components.
The present invention is particularly useful for filling pre-cast cavity building blocks with insulating foamed material.
REFERENCES:
patent: 2862239 (1958-12-01), Pollard et al.
patent: 3150108 (1964-09-01), Villi
patent: 3186959 (1965-06-01), Shriver et al.
patent: 3256067 (1966-06-01), Shriver et al.
patent: 3290260 (1966-12-01), Buccigross
patent: 3312639 (1967-04-01), Justice
patent: 3329631 (1967-07-01), Pilgrim
patent: 3414526 (1968-12-01), Mason
patent: 3488412 (1970-01-01), Bielfeldt et al.
patent: 3631134 (1971-12-01), Scheuermann et al.
patent: 3855161 (1974-12-01), Bauer
patent: 3979341 (1976-09-01), Widman
Connett Michael
Connett Peter
Beaconet Engineering Company, Limited
Foelak Morton
Laubscher Lawrence E.
LandOfFree
Foam producing method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Foam producing method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foam producing method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-257666