A method for applying a label to a container particularly suited for applying a polypropylene label to a polypropylene cup as it is moulded. The resultant container is made of a single type of plastic allowing it to be easily recycled. The mould used to produce the container has been designed to hold a label in place and stretch a portion of the label so it stays in place before injecting the plastic to form the container.

This process for manufacturing a plastic part (1) having a first technical face and a second face, in a mold comprising a first shell intended to form the first face endowed with impressions intended to form technical members of the technical face and a second shell intended to form the second face, the first shell and the second shell delimiting a cavity that forms the part (1), comprises the following steps:providing a porous reinforcing element (3);draping the reinforcing element (3) over the first shell by covering the surface of the first shell and the impressions intended to form the technical members;retaining the reinforcing element (3) on the first shell by retaining means;bringing the first shell and the second shell together;injecting a plastic in order to fill the cavity, the plastic passing through the porous reinforcing element (3) in order to fill impressions intended to form the technical members;moving the first and second shells apart;ejecting the plastic part (1).

This process for manufacturing a plastic part (1) having a first technical face and a second face, in a mold comprising a first shell intended to form the first face endowed with impressions intended to form technical members of the technical face and a second shell intended to form the second face, the first shell and the second shell delimiting a cavity that forms the part (1), comprises the following steps:providing a porous reinforcing element (3);draping the reinforcing element (3) over the first shell by covering the surface of the first shell and the impressions intended to form the technical members;retaining the reinforcing element (3) on the first shell by retaining means;bringing the first shell and the second shell together;injecting a plastic in order to fill the cavity, the plastic passing through the porous reinforcing element (3) in order to fill impressions intended to form the technical members;moving the first and second shells apart;ejecting the plastic part (1).

A method is proposed for transferring a bottom label and a wraparound label into an injection mould for producing an injection-moulded part provided with the labels, in that the bottom label is arranged on the end side and the wraparound label on the lateral side of an insert die and the insert die equipped with the two labels is introduced into the mould cavity of the moulding tool, after which the bottom label is deposited on the bottom and the wraparound label on the lateral surface of the mould cavity of the moulding tool, in order to back-mould them with a plastics material injected into the mould cavity. According to the invention, the method comprises the following steps of:providing an insert die, the end side of which has a central portion and a circumferential portion adjoining the central portion radially on the outside, wherein the central portion protrudes further in the direction of the free end of the insert die in the axial direction of the latter than the circumferential portion, such that the cross section of the insert die narrows in the direction of its free end, at least in the circumferential portion of its end side;applying the bottom label both to the central portion and to the circumferential portion of the end side of the insert die and applying the wraparound label to the lateral side thereof such that the wraparound label projects beyond the end, fining the end side, of the lateral side of the insert die in the direction of the free end thereof;introducing the insert die equipped with the two labels into the mould cavity of the moulding tool;detaching the wraparound label from the lateral side of the insert die and applying same at least to the lateral surface of the mould cavity of the moulding tool;detaching the bottom label from the end side of the insert die and applying same to the bottom of the mould cavity of the moulding tool, wherein the peripheral region of the bottom label is turned down from the circumferential portion of the end side of the insert die onto the bottom of the mould cavity of the moulding tool, such that it internally overlaps the edge, facing it, of the wraparound label; andextracting the insert die from the mould cavity of the moulding tool. The invention also relates to an injection-moulding device, suitable for carrying out such a method, having an insert die of the abovementioned type.

A device for producing plastics parts having at least one rod-shaped metal insert, and comprising first and second mold half elements. At least one of the mold half elements is movable along a closure direction (Z). The mold half elements together can form a closed cavity for molding a plastics part, the insert projecting at least in portions into the cavity in order to be overmolded with plastics material, and being substantially arranged between the two mold half elements in a dividing plane which comprises a longitudinal direction (X) and a width direction (Y). At least one of the mold half elements has at least one fixing means wherein the insert can be fixed in the width direction. A positioning means can be arranged at a proximal end of the insert, allowing the insert to be moved along the longitudinal direction (X) into an injection position.

In order to produce a plastic container (1,2) having a planar electronic element (15), a planar electronic element (15) is introduced into a recess (29) of an inner face of a mold. The mold comprises an outer mold part (10) and a mold core (11), which form a mold cavity (12). Molten plastic material is injected into the mold cavity (12). After the subsequent cooling of the plastic material, mold removal is carried out. The recess (29) is arranged on an inner face (26) of the outer mold part (10). The molten plastic material is injected into the mold cavity in such a way that the molten plastic material flows substantially parallel along a surface (25) of the planar electronic element (15) facing the mold cavity (12). The planar electronic element (15) is an RFID inlay, for example. The planar electronic element does not require a protective casing and can be sprayed directly.

A method is proposed for transferring a bottom label and a wraparound label into an injection mould for producing an injection-moulded part provided with the labels, in that the bottom label is arranged on the end side and the wraparound label on the lateral side of an insert die and the insert die equipped with the two labels is introduced into the mould cavity of the moulding tool, after which the bottom label is deposited on the bottom and the wraparound label on the lateral surface of the mould cavity of the moulding tool, in order to back-mould them with a plastics material injected into the mould cavity. According to the invention, the method comprises the following steps of:providing an insert die, the end side of which has a central portion and a circumferential portion adjoining the central portion radially on the outside, wherein the central portion protrudes further in the direction of the free end of the insert die in the axial direction of the latter than the circumferential portion, such that the cross section of the insert die narrows in the direction of its free end, at least in the circumferential portion of its end side;applying the bottom label both to the central portion and to the circumferential portion of the end side of the insert die and applying the wraparound label to the lateral side thereof such that the wraparound label projects beyond the end, fining the end side, of the lateral side of the insert die in the direction of the free end thereof;introducing the insert die equipped with the two labels into the mould cavity of the moulding tool;detaching the wraparound label from the lateral side of the insert die and applying same at least to the lateral surface of the mould cavity of the moulding tool;detaching the bottom label from the end side of the insert die and applying same to the bottom of the mould cavity of the moulding tool, wherein the peripheral region of the bottom label is turned down from the circumferential portion of the end side of the insert die onto the bottom of the mould cavity of the moulding tool, such that it internally overlaps the edge, facing it, of the wraparound label; andextracting the insert die from the mould cavity of the moulding tool. The invention also relates to an injection-moulding device, suitable for carrying out such a method, having an insert die of the abovementioned type.