Sealed Air Corporation manufactures the 'Instapak. Foam Packaging Systems'.
These machines are mainly used for custom packaging applications. The
system produces polyurethane foam from two-part resin which is mixed at the
injection nozzle, heated and under pressure (from a 2hp compressor). I
acquired one of these machines from a company that went chpt 7. Never
occurred to me to used it to fill in frame voids and other structure
members on my TR6 restoration. Not sure how long or at what temp
polyurethane foam starts to decompose but I'll check this out from the
factory. Thanks for the great idea.
At 11:29 PM 7/22/01 -0400, aribert wrote:
>THis thread may be a bit old, I am once again behind on my digests.
>I would love to hear of anyone that successfully injected two part foam
>into body or frame cavities using "home grade technology and
>equipment". The June 2001 issue of Automotive Engineering (SAE
>magazine) had an article on the use of "foam in place" to both quiet and
>stiffen body structures. I have been dreaming of how to inject the foam
>(not to mention how to mix it at the nozzle in the cavity). I have
>bought 2 part urethane foam in quart cans (about $25) and mixing small
>quantities at a time, manually stirring in a cup and poured/brushed the
>liquid in place for a home improvement project - the only way I could
>imagine getting this
>into a frame or body cavity would be to have the body or frame on a
>rotisserie and even then the opening might not be in the optimal place
>to pour. If it is done wrong then you end up with a lot of trapped
>water pockets and IMO areas that will rust out sooner.
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