Abstract: There is described a closable opening device for a sealed package containing a pourable food product. The opening device has a tubular frame defining a through hole and fitted about a pierceable portion of the package; a removeable threaded frame which screws onto the frame to close the hole; and a tubular cutting member movably engaging the hole, rotatably connected to the frame at least when disengaging the cap from the frame when unsealing the package and projecting axially from the frame and inwards of the package to detach the pierceable portion partly from the rest of the package and the cutting member has, along a lateral wall, a number of through openings to allow air into the package when pouring the product.

Abstract: There is described a closable opening device (2) for a sealed package (1) containing a pourable food product. The opening device (2) has a frame (5) defining a through hole (6) and fitted about a pierceable portion (4) of the package (1); a removable threaded cap (7) which screws onto the frame (5) to close the hole (6); and a tubular cutting member (8) movably engaging the hole (6), connected angularly to the cap (7) at least when disengaging the cap (7) from the frame (7) when unsealing the package (1), and projecting axially from the frame (5) and inwards of the package (1) to detach the pierceable portion (4) partly from the rest of the package (1); and the cutting member (8) has, along a lateral wall (29), a number of through openings (50) to allow air into the package (1) when pouring the product.

Abstract: A closable opening device (2) having a frame (15) defining a through hole (16) and fitted about a pierceable portion (4) of a sealed package (1) for pourable food products; a removable cap (17) cooperating with the frame (15) to close the hole (16); and a substantially tubular cutting member (18) engaging, in use, the hole (16) in angularly and axially movable manner, and having an end edge (40) in turn having, on the face, cutting means (41) cooperating with the pierceable portion (4) to open the package (1); the frame (15) and the cutting member (18) are molded in one piece in a preassembly configuration, wherein they are secured coaxially to each other by breakable connecting means (62).

Abstract: A closable opening device (2) having a frame (15) defining a through hole (16) and fitted about a pierceable portion (4) of a sealed package (1) for pourable food products; a removable threaded cap (17) which screws onto the frame (17) to close the hole (16); and a tubular cutting member (18), which engages the hole (16) in movable manner along a spiral feed path, is connected angularly to the cap (17) during disengagement of the cap (17) from the frame (15) when first opening the package (1), and has an end edge (40) in turn having, on the face, a single cutter (55) acting along a major portion (C) of the periphery of the pierceable portion (4) to open the package (1).