Metallic can lid

A metallic can lid comprising:

• a reclosable opening;
• a microgap which extends peripherally, which is provided in the metallic lid surface and which is sealed off at an inner lid side by a film;
• a weakening line extending adjacent to said microgap in the film;
• a sealing frame composed of a plastic material which is connected to the fixed lid surface and which surrounds the opening region;
• a closure unit composed of a plastic material which is connected to the metallic lid region which is disposed within the microgap and which can be pivoted open, said closure unit being pivotably attached to the fixed lid surface and being provided with a tear-open member disposed diametrically opposite the pivot bearing region,
• wherein the sealing frame and the closure unit cooperate via sealing and latching ribs and associated receiving grooves and the metallic lid region disposed within the annular microgap is received and held in the opening region of the lid;
• wherein the film provided at the inner lid side and covering the microgap consists of a molded part, which reproduces the lower side structure of the can lid forming a continuous metallic surface;
• and
• wherein both the sealing frame is connected to the fixed lid surface in a bonded manner and the closure unit is connected to the metallic lid region that can be pivoted open in a bonded manner.

A can or a container composed of metal or plastic, wherein a hermetically sealed closure is produced by using a metallic can lid, the metallic can lid comprising:

• a reclosable opening;
• a microgap which extends peripherally, which is provided in the metallic lid surface and which is sealed off at an inner lid side by a film;
• a weakening line extending adjacent to said microgap in the film;
• a sealing frame composed of a plastic material which is connected to the fixed lid surface and which surrounds the opening region;
• a closure unit composed of a plastic material which is connected to the metallic lid region which is disposed within the microgap and which can be pivoted open, said closure unit being pivotably attached to the fixed lid surface and being provided with a tear-open member disposed diametrically opposite the pivot bearing region,
• wherein the sealing frame and the closure unit cooperate via sealing and latching ribs and associated receiving grooves and the metallic lid region disposed within the annular microgap is received and held in the opening region of the lid;
• wherein the film provided at the inner lid side and covering the microgap consists of a molded part, which reproduces the lower side structure of the can lid forming a continuous metallic surface;
• and
• wherein both the sealing frame is connected to the fixed lid surface in a bonded manner and the closure unit is connected to the metallic lid region that can be pivoted open in a bonded manner in accordance with claim 1.

A method of manufacturing a sealed opening, which can be torn open or pressed in, in an areal sheet metal material, the method comprising:

• coating the sheet metal material at least at one side by an adhesive lacquer layer;
• and
• punching an areal region corresponding to the opening out from the coated sheet metal material in such a manner that the punching die engaging at the coated side cooperates with a die which brings about a smooth cut region and an adjoining slanted cut region of the punched out part;
• supplying a lubricant required for the punching process exclusively and solely by the adhesive lacquer layer;
• inserting the punched out areal region whose peripheral contour is substantially complementary to the die shape again into the opening in the sheet metal material and holding it therein in a shape matched and/or force transmitting manner;
• and
• covering the microgap formed between the sheet metal material and the punched out areal region at the one side by a film which is areally coated onto or laminated onto the sheet metal material and which is provided with a peripheral weakening or notch adjacent to the microgap.