Device and method for separating segments from a continuous web
AssigneeGDM S.p.A.
InventorAlessandro ZAVALLONI
Life of this patent
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Abstract
A separation method for segments from a continuous web includes advancing the continuous web in an advancement orientation along a flat advancement path at a first speed, making at least one weakening line on the continuous web, tearing the continuous web at the first weakening line by accelerating the continuous web.
Claims17
A segment separation device from a continuous web, said separation device comprising:
- a flat advancement path of the continuous web;
- a cutting knife arranged along the flat advancement path and configured to make at least one weakening line on the continuous web, said weakening line being transverse to the continuous web and located between consecutive segments according to an advancement orientation of the continuous web, said separation device comprising:
- a feeding system, upstream of the cutting knife according to said advancement orientation for feeding the continuous web to the cutting knife at a first speed;
- a first aspirated belt arranged downstream of the cutting knife according to the advancement orientation movable at a second speed greater than the first speed, said first aspirated belt having an inlet and an outlet for the continuous web and being configured to receive the continuous web provided with said weakening line and advancing it along the flat advancement path at said second speed.
A segment separation method from a continuous web, said separation method comprising
- advancing the continuous web in an advancement orientation along a flat advancement path at a first speed,
- making, on the continuous web, at least a first weakening line transverse to the continuous web and located between consecutive segments according to the advancement orientation,
- tearing the continuous web at said first weakening line, tearing the continuous web comprising accelerating the continuous web.
A manufacturing method for an absorbent product, comprising at least one permeable topsheet, an impermeable backsheet and an absorbent pad inserted between the topsheet and the backsheet, said manufacturing method comprising a segment separation method from a continuous web to make a succession of absorbent pads spaced therebetween, feeding said succession of absorbent pads spaced therebetween to an encounter with a second continuous web defining the backsheets and a third continuous web defining the topsheets, to obtain a continuous composite web formed of the second continuous web, the first continuous web and the absorbent pads withheld between the first and second continuous web.
Dependencies are inferred from the claim text.