4_PPR_22-1259_Foam_specs_1.pdf

Equipmentless Foam Sealant used to close open mine shafts and adits

-- The foam must be portable so that the foam can be backpacked to the site (e.g. boxes vs. barrels needing no specialized transport or installation equipment, and individual packages must weigh less than 25 pounds.)

-- The foam must have a consistent density at all elevations.

-- Foam installation must not require entrance into the mine shaft.

-- Foam must be inert (only affected by exposure to UV light).

-- Foam must be non-shrinking in dry and/or wet environments.

-- Foam must be water-blown; chemical-blown products are not acceptable (i.e. no CFC, HFC, OR HCFC, including 245fa).

-- Cream time: 30-50 Seconds; Gel time: 180-220 Seconds; Tack free time: 260 Seconds; Rise time: 300- 360 Seconds; Density (free rise core) 2.4-2.7 pcf; Compressive Strength >30psi; Closed Cell Content >90%; Water absorption <0.08 lbs/sq ft; Storage Temperatures -20F to 120F; Shelf life 10-15 months estimated.