Abstract: For molding and packaging a product having paste, semiliquid or liquid form, e.g., frankfurter-type sausage paste, two films such as thermoplastic films are fed longitudinally, respectively above and below tubes feeding the product. For each of the feeding tubes, a longitudinal tubular cavity is formed between the films, e.g., by localized longitudinal welding, and the tubular cavities are filled with the product being fed. In feeding the films and the product, transverse seals are formed at intervals to terminate the filled cavities, e.g., by localized transverse welding of the films.