US Patent 7166800 Macroencapsulation container having both releasable and permanent sealing means

A macroencapsulation container having in combination an inner container member with an inner lid member and an inner body member, and an outer container member with an outer lid member and an outer body member, the inner container member being composed of a thermoplastic polymer material that can be thermo-welded or thermo-bonded to itself by melting. The outer container is composed of a metal. At least one electric resistance wire is embedded in or mounted onto the inner lid member along the area of contact with the inner body member, such that the inner lid member may be thermo-bonded to the inner body member to create an integral, one-piece inner container member encapsulating any material or containers disposed within.