A thermoplastic elastomer tube can include a thermoplastic elastomer component disposed within a matrix. The control circuit includes a current source configured to generate a reference current. Desirably, the films contain a topical active agent. The rail comprises a locking assembly for selectively carrying out a locking or a locking-release between the fixed rails and the moving rail, and a locking-release operating means for operating the locking assembly so as to release a locking between the two rails. Prior to forming, the formable mass may be ground so as to enable production of plant-based food products that typically have a smoother texture, such as, e.