Sealing sheet for use to close a container-defining sheet

In a sealing sheet for use to close a container-defining sheet having a top surface comprising a given number of spaced apart cavities embossed therein and positioned in rows and columns, each of said cavities being upwardly opened and thus defining a container that is surrounded by a flange that is part of the top surface of said container-defining sheet, said sealing sheet comprising:

• a top layer having an upper surface and a lower surface, said lower surface being covered with a pressure sensitive adhesive glue;
• and
• a bottom layer having an upper surface detachably fixed to the lower surface of the top layer by means of said adhesive glue, said bottom layer being peelable from the lower surface of the top layer to allow fixation of the sealing sheet onto the top surface of the container-defining sheet, in order to close the containers defined in the same,
• said bottom layer of the sealing sheet having tearing lines punched into it in such a manner and position as to leave parts of said bottom layer glued onto the bottom surface of the top layer in the form of a number of bottom pieces equal to the given number of cavities made in the container-defining sheet when said sealing sheet is peeled off, each of said bottom pieces being shaped, sized and positioned so as to extend over a corresponding cavity of the container-defining sheet when the sealing sheet is properly applied to and glued on the flanges of the top surface of the container-defining sheet, said bottom pieces thus preventing any element stored in the containers from coming into contact with the adhesive glue,
• said top layer of said sealing sheet also having tearing lines punched therein in such a manner and position as to extend from one side of each of the cover pieces that may be splitted from the sealing sheet, in line with opposite sides of the bottom piece of the corresponding cover piece, in order to facilitate peeling of said bottom piece and of the corresponding part of the cover piece from the corresponding container to have access to the element(s) stored in it, the upper surface of said top layer being devised to allow printing of information on it, which corresponds to what is located in each of the containers,
• the improvement wherein said sealing sheet also comprises:
• an additional layer having an upper part and a lower part attached to each other, said upper part having tearing lines punched into it in such a manner and position as to match with the tearing lines of the top layer of the sealing sheet and thus form an additional element on the upper surface of the top layer on each of said container, said bottom part having peelable bands that can be removed to allow gluing of each of said additional elements onto the upper surface of the top layer of each container on one side of it so as to allow said additional element to be folded up, said bottom part also having tearing lines positioned to match those of the top part of the additional layer but except on the peelable bands, whereby, in use, additional information may be printed onto one or both sides of said additional layer to add information to what is located in each of the containers, such added information as well as the information already printed on the upper surface of the top layer being easily accessible by merely folding up the additional element of each of the container.