Sidel Holdings & Technology S.a.

Sidel International Ag

Luigi Panzetti

Vanni Zacche'

Vanni Zacche

Vanni Zacché

The invention deals with the field of labelling machines with tubular labels made of heat-shrinking film that are directly formed on the machine starting from coiled film. More precisely, the invention refers to a device () or () for positioning a tubular label () at a pre-established height from a bottle bottom and to means () for keeping the label position during the label transfer to an outlet conveyor where a first partial heat-shrinkage occurs. The positioning device is supported by the drum, on which the label is formed, and must allow sliding the bottle inside the formed label.

Positioning device for a tubular label at a pre-established height from a bottle bottom in a labelling machine

A process for labelling containers or bottles by applying tubular labels made of heat shrinkable film which completely surround an outer surface area of the bottle. The process and machine include winding a precut label from a reeled film on a rotating tubular round plate supported by a roundabout labelling machine, the bottle abuts on the round plate and the label is wound on the underlying tubular portion. The tubular surface of the round plate is provided with a plurality of holes alternatively supplying or drawing air for establishing a positive or negative pressure respectively on the label surface. The overlapped vertical ends of the label are heat sealed by an electrically heated bar located at each round plate or are chemically bonded. The tubular round plate and the container on it can vertically move to transfer the container into the tubular label.

Process and apparatus for forming tubular labels of heat shrinkable film and inserting containers therein

The invention refers to the field of labelling machines that use tubular labels, and in particular it refers to ultrasound welding apparata for making a tubular label made of a heat-shrinking film, precut from a coil. The apparatus provides for the label welding for the whole length of the surmount (), the apparatus being able to translate on at least two Cartesian axes; moreover, it guarantees one or more welding beads due to the presence, on the sonotrode, of a plurality of ribs (): the formation of one or more beads will have to be attributed to the more or less correct position of the precut label and the errors caused during its transfer. The presence of many beads is an improving condition of the resistance to tensile stress of the welded label.

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Parma, Italy

Luigi Panzetti