Patent ID: 8381903

Claim:
An article useful for containing plural components of a mixture in distinct compartments and their subsequent mixing within said article, comprising: a first layer of material; a second layer of material sealingly attached to said first layer another along a first seal; and a frangible seal along which said first layer of material is sealingly attached to said second layer of material, said frangible seal being configured and located sufficiently to define a first pouch having a first interior volume and at least a second pouch having a second interior volume in said article, said first pouch containing a first substance and said second pouch containing a second substance that is chemically reactive towards said first substance, said substances yielding upon their admixture a composition from which a cured polymeric material selected from the group consisting of: polyurethane polymers, polyurea polymers, epoxy polymers, and polyaspartic polymers may be provided, wherein the strength of said frangible seal is sufficient to not be ruptured under ambient conditions until a pressure differential of any amount in the range of between about two pounds per square inch to about six pounds per square inch, including all pressures and ranges of pressures therebetween, is caused to exist between the interior volumes of said first pouch and said second pouch, and wherein the strength of said first seal is sufficient to not be ruptured under ambient conditions until a pressure differential exceeding 7.5 pounds per square inch is caused to exist between a volume within said article and the ambient pressure, subsequent to rupture of said frangible seal.