Abstract: The present invention refers to an automatic opening device for a package, the device comprising an spout, a cap and a means for tearing the sealing element of a package, which can be either the aluminium layer of an aseptic carton package, or a sealing element located under the spout or the plastic material of a plastic pouch or the like.

Abstract: The present invention refers to an automatic opening device for a container provided with a spout having a rim with a sealing element firmly attached thereto, said automatic opening device for a container being provided with means that obviate the need to unscrew the cap of the container and next remove the sealing element from the rim of the spout in order to enable pouring of the product stored in the container.

Abstract: An automatic opening device for a carton package comprising a spout (3) and a cap (26), the device being provided with a plurality of protruding cutting elements (30) onto the internal face (29) of a cap element (27) thereof. The spout (3) is provided with a thread (2) having grooves (2c) and (2f) of opposite orientation and connected each other, within which pass internal screw thread segments (19) distributed equidistantly in the internal part of the elongate lateral wall (28) of the cap (26). The spout is applied in a carton package over a hole in the carton layer which exposes the aluminium layer. When the cap (26) is unscrewed from the spout (3) the first time it makes a downward axial movement and next the protruding cutting elements (30) are able to cut the aluminium layer of the carton package in order to open a passage for the content of the carton package.

Abstract: A screw thread variator device, provided in an opening (3) of a package, and a cap 26, provided with a plurality of protruding cutting elements (30) on the internal face 29 of the cap element 27 thereof. Said screw thread variator device is provided with a plurality of downward grooves 2c which connect to upward grooves 2f, within which internal screw thread segments (19) can pass.