Staged mold for encapsulating hazardous wastes

Details Staged mold for encapsulating hazardous wastes Staged mold for encapsulating hazardous wastes

1988-07-08

1990-06-12

Housel, James C.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

And means to form or reshape preform

252628, 252633, 264 05, 264254, 425125, 425346, 425413, 425443, 425452, B29C 4320, G21F 936

Patent

active

049328530

ABSTRACT:
A staged mold for stabilizing hazardous wastes for final disposal by molding an agglomerate of the hazardous wastes and encapsulating the agglomerate. Three stages are employed in the process. In the first stage, a first mold body is positioned on a first mold base, a mixture of the hazardous wastes and a thermosetting plastic is loaded into the mold, the mixture is mechanically compressed, heat is applied to cure the mixture to form a rigid agglomerate, and the first mold body is removed leaving the agglomerate sitting on the first mold base. In the second stage, a clamshell second mold body is positioned around the agglomerate and the first mold base, a powdered thermoplastic resin is poured on top of the agglomerate and in the gap between the sides of the agglomerate and the second mold body, the thermoplastic is compressed, heat is applied to melt the thermoplastic, and the plastic is cooled jacketing the agglomerate on the top and sides. In the third stage, the mold with the jacketed agglomerate is inverted, the first mold base is removed exposing the former bottom of the agglomerate, powdered thermoplastic is poured over the former bottom, the first mold base is replaced to compress the thermoplastic, heat is applied to melt the new thermoplastic and the top part of the jacket on the sides, the plastic is cooled jacketing the bottom and fusing with the jacketing on the sides to complete the seamless encapsulation of the agglomerate.

REFERENCES:
patent: 922651 (1909-05-01), Williams
patent: 1930167 (1933-10-01), Goodwin
patent: 3330088 (1967-07-01), Dunlea, Jr.
patent: 3451185 (1969-06-01), Tezuka
patent: 3497580 (1970-02-01), Taylor-Smith
patent: 4222889 (1980-09-01), Uerpmann
patent: 4234632 (1980-11-01), Lubowitz
patent: 4297827 (1981-11-01), Allison
patent: 4303381 (1981-12-01), Aoki
patent: 4581162 (1986-04-01), Kawamura et al.
patent: 4726916 (1988-02-01), Aubert et al.
patent: 4756681 (1988-07-01), Unger et al.

Affiliated with

Also associated with

Rating

Staged mold for encapsulating hazardous wastes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Staged mold for encapsulating hazardous wastes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Staged mold for encapsulating hazardous wastes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-613943