Polytech Foam Products Inc.

Polytech Foam Products A Division of FAI International, Inc. Phone: (800) 888-3457 Fax: (510) 232-3721
Home Products Single Component Foam Two Component Foam Pour-In-Place Foam Order Support FAQ Tutorials Downloads Contact Us Links	Home : Support : Tutorials : Pour Foam How To Use PolyTech Polyurethane Portable Pour-In-Place Foam Kits: The PolyTech Two Component polyurethane pour-in-place foam kit comes in two 5-gallons closed-head plastic drums. The main difference between the pour-in-place foam kit and the spray foam kit is the reaction profiles and chemical compositions. The pour-in-place foam kit is slow reacting. It takes four (4) minutes for the reaction to complete after the end user hand-mixes the appropriate portions of Resin-A and Resin-B. The formulation utilizes a liquid blowing agent. Therefore the mixing process can be carried out in an open air condition. This is significantly different than the two component spray foam. The two component spray foam uses a combination of gaseous and liquid blowing agents. The presence of the gaseous blowing agent make it necessary to package the spray foam in an enclosed pressurized system. The presence of the liquid blowing agent in the pour-in-place formulation enables the resultant foam to be slightly more rigid than those with the spray foam. The simplicity of the pour-in-place formumulation makes it possible to adjust formulation with different foam densities from 2 lbs/cubic feet to 5 lbs/cubic feet. The resultant reaction is exothermic, in which it gives out heat during the curing process. The higher the foam density, the higher will the exotherm be. End user must carefully consider the effect of this generated exotherm to the intended project. If end user mixes too much resins at one time, the resultant exotherm generated may not be able to dessipate during the foam curing process. Smoking from the smothering foam bum or even self ignited fire with the foam bun can occur. The easiest way to use the two component pour-in-place foam is to execute the mixing in a disposable plastic bag. Equal volume of Resin-A and Resin-B will be dispensed into the plastic bag. The poured mixture can be hand-mixed with a stirrer or be mixed by slurging the plastic bag around. The thoroughly mixed resins are then poured into the intended target area and the used mixing plastic bag will be discarded. Use a new plastic bag for the next batch. This is a no-mess solution to using the pour-in-place foam. The pour-in-place formulation takes 180 seconds to initiate the reaction (cream time). The reacting resins will then expand and rise for the next 40 seconds to achieve full expansion. After the foam achieves full expansion, the shape of the resultant foam can be adjusted by hand within the next few minutes. This is a common practice for end users to create fake rock, waterfall backgrounds or model train landscapings. Please consult the corresponding articles with regard to each subject under the "How To" page.
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How To Use PolyTech Polyurethane Portable Pour-In-Place Foam Kits:

The PolyTech Two Component polyurethane pour-in-place foam kit comes in two 5-gallons closed-head plastic drums. The main difference between the pour-in-place foam kit and the spray foam kit is the reaction profiles and chemical compositions.

The pour-in-place foam kit is slow reacting. It takes four (4) minutes for the reaction to complete after the end user hand-mixes the appropriate portions of Resin-A and Resin-B. The formulation utilizes a liquid blowing agent. Therefore the mixing process can be carried out in an open air condition. This is significantly different than the two component spray foam.

The two component spray foam uses a combination of gaseous and liquid blowing agents. The presence of the gaseous blowing agent make it necessary to package the spray foam in an enclosed pressurized system. The presence of the liquid blowing agent in the pour-in-place formulation enables the resultant foam to be slightly more rigid than those with the spray foam. The simplicity of the pour-in-place formumulation makes it possible to adjust formulation with different foam densities from 2 lbs/cubic feet to 5 lbs/cubic feet. The resultant reaction is exothermic, in which it gives out heat during the curing process. The higher the foam density, the higher will the exotherm be.

End user must carefully consider the effect of this generated exotherm to the intended project. If end user mixes too much resins at one time, the resultant exotherm generated may not be able to dessipate during the foam curing process. Smoking from the smothering foam bum or even self ignited fire with the foam bun can occur. The easiest way to use the two component pour-in-place foam is to execute the mixing in a disposable plastic bag. Equal volume of Resin-A and Resin-B will be dispensed into the plastic bag. The poured mixture can be hand-mixed with a stirrer or be mixed by slurging the plastic bag around. The thoroughly mixed resins are then poured into the intended target area and the used mixing plastic bag will be discarded. Use a new plastic bag for the next batch. This is a no-mess solution to using the pour-in-place foam.

The pour-in-place formulation takes 180 seconds to initiate the reaction (cream time). The reacting resins will then expand and rise for the next 40 seconds to achieve full expansion. After the foam achieves full expansion, the shape of the resultant foam can be adjusted by hand within the next few minutes. This is a common practice for end users to create fake rock, waterfall backgrounds or model train landscapings. Please consult the corresponding articles with regard to each subject under the "How To" page.