AN APPARATUS AND A METHOD FOR FORMING OPENING DEVICES ON A SHEET PACKAGING MATERIAL FOR PACKAGING POURABLE FOOD PRODUCTS

摘要

An apparatus for forming an opening device on a receiving portion of a sheet packaging material for packaging pourable food products comprises a molding unit having a first and a second mold selectively set in an open configuration, in which they are spaced from one another to allow feed of the packaging material therebetween, and in a closed configuration, in which they cooperate with faces of the packaging material and delimit a closed mold cavity housing the receiving portion of the packaging material and adapted to be filled with molten plastic material to define, when the plastic material sets, the opening device. The apparatus further comprises feeding device to feed molten plastic material to the molding zone in the open configuration of the first and second mold, and pressing device exerting pressure on the dose to force it to fill the mold cavity and to form the opening device.

主权项

1. An apparatus for forming an opening device on a receiving portion of a sheet packaging material for packaging pourable food products; said apparatus comprising a molding unit operating at a molding zone of the apparatus and having a first and a second mold selectively set in an open configuration, in which they are spaced from one another to allow feed of said packaging material therebetween, and in a closed configuration, in which they cooperate with opposite faces of said packaging material and delimit a closed mold cavity housing said receiving portion of said packaging material and adapted to be filled with molten plastic material to define, when the plastic material sets, the opening device; further comprising:
feeding means to feed a dose of molten plastic material to said molding zone in said open configuration of said first and second mold; and pressing means carried by said molding unit and exerting pressure on said dose to force it to fill said mold cavity and to form the opening device.