Unit and method for feeding folded tissue products or the like in a revolving drum packaging machine

Abstract

An apparatus for packaging stacks of folded paper products such as handkerchiefs or the like with blanks of plastic film, comprising at least one pocket (58), insertion means (5), along an insertion direction, of a single stack in said pocket (58) with the interposition and consequent folding of a corresponding blank, said pocket (58) being operatively associated with stop means (24) of the stack completely inserted within said pocket. There are control means (22) adapted to operate the stop means (24) in a coordinated manner with respect to the operation of the insertion means (5), to provide an abutment to the stack during the whole insertion step in the pocket (58), the stop means (24) comprising suction means (72) adapted to keep the film in position and to disengage the same film at least in an extraction step of the stack from the pocket.

Description

technical field [0001] The present invention relates to wrapping stacks of folded tissue items, such as towels, napkins, etc., for example, but not exclusively, by means of a drum machine with a wrapping material made of weldable plastic film. Background technique [0002] Known machines or devices of this type are of the kind described in US patents US4845924 and US5459979. In short, said known machine or device is a high-speed packaging machine comprising a drum provided with radial recesses having dimensions suitable for the product to be packaged, the The stacks of products are inserted in rapid succession into said radial recesses, simultaneously with a plastic blank film, so as to complete the complete wrapping of each stack by performing a weld on the film to obtain a closed package. [0003] In this machine, due to the high operating speeds required to ensure adequate production rates, the stack is compressed, maintaining its correct geometry and inserting said stac...

AI Technical Summary

Problems solved by technology

[0003] In this machine, due to the high operating speeds required to ensure an adequate production rate, the stack is compressed, maintaining its correct geometry and inserted into the drum without causing deformation or failure of the wrapping with the film will be very complex inside the recess of the

Specifically but not exclusively, when the speed increases beyond a certain limit, it becomes difficult, if not impossible, to maintain control of the film's position and compression along the radial direction of insertion during the wrapping step, leading to defects in the package , in any case, when the speed is kept below said limit, this defect can also produce

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