Patent ID: 6885816
Filing Date: 2005-04-26
Classification: B29C,B29K,F24H

Abstract:
1. A method of insulating a tank, comprising the steps of: placing an outer jacket on the tank to define a cavity extending outwardly around a portion of the tank; positioning a flexible bag in a first portion of said cavity, said bag having a spaced series of metering openings in a wall portion thereof; forcing a first quantity of flowable, hardenable insulation into said bag in a manner expanding said bag into sealing engagement with said tank and said outer jacket, and causing a small portion of said insulation to be forced outwardly through said metering openings and subsequently form spaced apart hardened external protrusions on said bag; flowing a second quantity of flowable, hardenable insulation into a second portion of said cavity and into contact with said wall portion of said bag and the hardened protrusions thereon; and permitting said second quantity of insulation to harden and become mechanically interlocked with the previously hardened insulation protrusions in a manner substantially preventing shrinkage-created separation of said second insulation quantity from said wall portion of said bag.