Splicer for an unwinder, unwinder comprising the splicer, and corrugated board production line comprising the unwinder
AssigneeFosber S.p.A.
InventorsLorenzo VANNUCCHI, Marco IMPOSTI, Sauro RUBERTI, Francesco PINNA
Life of this patent
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Abstract
The splicer, for splicing a first web material and a second web material, comprises a retaining device adapted to hold a leading edge of the second web material in a standby position; and a dispenser for an adhesive, comprising a dispensing member configured to dispense a strip of adhesive onto the leading edge of the second web material in the standby position. An unwinder and a line are also disclosed, using splicers as defined above, as well as a method for splicing two web materials together.
Claims23
A splicer for splicing a first web material and a second web material together;
- wherein the splicer comprises a retaining device adapted to hold a leading edge of the second web material in a standby position;
- and an adhesive dispenser, comprising a dispensing member configured to dispense a strip of adhesive onto the leading edge of the second web material in the stand position;
- wherein the retaining device comprises a pinching member for pinching the leading edge of the web material, the adhesive dispenser co-acting with the pinching member.
An unwinder, for unwinding web material wound in reels, comprising:
- a first unwinding station, a second unwinding station, and the splicer configured to splice a first web material, coming from a first reel arranged in the first unwinding station, to a second web material, coming from a second reel arranged in the second unwinding station;
- and wherein the splicer comprises:
- a retaining device adapted to hold a leading edge of the second web material in a standby position;
- and an adhesive dispenser, comprising a dispensing member configured to dispense a strip of adhesive onto the leading edge of the second web material in the stand position;
- and wherein the retaining device comprises a pinching member for pinching the leading edge of the web material, the adhesive dispenser co-acting with the pinching member.
A corrugated board production line comprising a first unwinder, having a first unwinding station and a second unwinding station, and a splicer, to splice a depleted web material, coming from one of said first unwinding station and second unwinding station, to a leading edge of a web material, in standby in the splicer and coming from the other of said first unwinding station and second unwinding station;
- wherein the splicer comprises:
- a retaining device adapted to hold a leading edge of the second web material in a standby position;
- and an adhesive dispenser, comprising a dispensing member configured to dispense a strip of adhesive onto the leading edge of the second web material in the stand position;
- and wherein the retaining device comprises a pinching member for pinching the leading edge of the web material, the adhesive dispenser co-acting with the pinching member.
A method for splicing a first web material, coming from an empty reel, to a leading edge of a second web material, coming from a second, standby reel;
- wherein the method comprises the following steps:
- arranging the leading edge of the second web material in a preparation position;
- applying an adhesive onto the leading edge, transversely to a feed path of the web material, through an adhesive dispenser co-acting with a pinching member of a retaining device adapted to hold the leading edge;
- holding the leading edge, with the adhesive applied thereto, by said pinching member;
- pressing the first web material onto the leading edge of the second web material, causing the first web material and the second web material to adhere to each other;
- cutting the first web material downstream of the adhesive strip, thus generating a tail edge of the first web material;
- and
- dragging the second web material into a feed path by means of the tail edge of the first web material.
Dependencies are inferred from the claim text.