Abstract: A container for viscous materials having volatile components is constructed to have substantial transparency. The container includes a tubular housing having first and second closing structures at opposite ends. The housing may be entirely constructed of amorphous nylon, but preferably is formed as a laminate having a relatively thin inner lining of high barrier amorphous nylon and an outer sleeve of low barrier plastic, such as plyethylene terephthalate. In one embodiment the container is adapted for caulking compounds wherein the first closing structure is an end wall, nozzle and snout assembly and wherein the second closing structure is defined by a moveable piston slideably received in the housing interior.

Abstract: A pump apparatus for viscous material adapted to be portable and includes a pair of upright supports defining a rigid framework mounted on a pair of wheels for movement along a support surface, such as a building floor. A platform extends perpendicularly outwardly from the framework and is adapted to support a container of material. A carriage is slideably mounted on a pair of guide rails secured to the framework, and a winch and cable assembly allows an operator to raise and lower the carriage. The carriage mounts a linearly arranged motor, drive shaft and pump, with the pump having a downwardly extending, disk-like follower plate oriented parallel to the platform. When a container is placed on the platform, the carriage may be lowered to insert the follower plate so that it bears against the materials. The motor drives the pump, and, as the material is removed from the container and dispensed through a hose, the weight of the carriage, pump and motor drives the follower plate into the container.