A letter number specifying unit specifies a letter number of a sealed letter to be informed to a user, based on a content of a transfer error detected by an error detector. A searching unit searches a letter-number-specific print content table, in which letter number identification information for identifying each letter number, and print content information indicating a content of an image to be printed on a sheet which forms the sealed letter of each letter number are associated with each other, and finds the print content information associated with the letter number identification information of a letter number identification code read by a code reader from the sheet which forms the sealed letter of the letter number specified by the letter number specifying unit. An information displaying unit displays the print content information found by the searching unit on a display.

A container for food products is defined by a tray (2), which is made of a polymer material, has a bottom wall (3), a side wall (4), and an upper peripheral edge (5), and is provided with a glue layer (16) directly applied on the polymer material of the upper peripheral edge (5) to lock a closing lid (6) on the upper peripheral edge (5).

Machinery for packaging articles (15, 15) in preformed cartons (18), having a conveyor (19) for making cartons travel with an article resting on top of the carton, partially enclosed by the carton, comprising a closing station, in particular having first folding means (24) designed to lift a first side wall of the said carton arranged transversely to the carton progress direction (A) so that it is positioned against the article, in particular towards the rear of the article with respect to the carton progress direction, characterised by the fact that said closing station may be moved parallel to the carton progress direction, wherein the closing station is integral to a sliding surface (20) which is parallel to the surface (26) of the machine on top of which the cartons travel. Packaging method using a machine as described above.

A method and an apparatus for forming packages including plasters enclosed between two opposite flexible sheets having their edges joined by means of a thermally-activated adhesive.