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US 12,397,538 B2Granted
Machine for processing a web material with a threading device and relative methods
AssigneeKorber Tissue S.p.A.
InventorsFabrizio Lorenzi, Stefano Silvestri, Leonardo Boschi, Emanuele Andreuccetti, Riccardo Giorgi, Massimiliano Adalberti, Jury Palazzesi, Luigi Fabbri
Life of this patent
Estimating the term…
Abstract
In order to thread a web material in a converting machine a system is provided, with a first continuous flexible member and a second flexible member. An anchoring element, to which there can be fixed the web material leading edge, may be transferred from one to the other of the two flexible members so as to facilitate the threading operations.
Claims27
A machine for converting a web material, comprising:
- a web material advancement path and a threading device adapted to introduce a leading edge of a web material into the web material advancement path;
- wherein the threading device comprises:
- a first flexible member which is continuous and defines a threading path from an upstream position to a downstream position with respect to a threading direction for the web material, and a return path;
- a second flexible member;
- at least one web material anchoring element, adapted to be reversibly constrained alternately to the first flexible member and to the second flexible member;
- and
- a device for transferring the at least one web material anchoring element from the first flexible member to the second flexible member, arranged in a transfer position along a portion of the threading path of the first flexible member, in the transfer position the first flexible member being adjacent to the second flexible member.
4 more elements
A web material converting line, comprising:
- a rewinding machine comprising:
- a web material advancement path and a threading device adapted to introduce a leading edge of a web material into the web material advancement path;
- wherein the threading device comprises:
- a first flexible member which is continuous and defines a threading path from an upstream position to a downstream position with respect to the web material threading direction, and a return path;
- a second flexible member;
- at least one web material anchoring element, adapted to be reversibly constrained alternately to the first flexible member and to the second flexible member;
- a device for transferring the at least one web material anchoring element from the first flexible member to the second flexible member, arranged in a transfer position along a portion of the threading path of the first flexible member, in the transfer position the first flexible member being adjacent to the second flexible member;
- a winding unit arranged along the threading path upstream of the transfer position;
- and
- an embossing-laminating machine arranged upstream of the rewinding machine;
- wherein the embossing-laminating machine comprises a first inlet for a first ply of the web material, a second inlet for a second ply of the web material;
- an outlet for the first ply and the second ply;
- wherein the first flexible member extends from the first inlet of the embossing-laminating machine towards the rewinding machine;
- wherein a third flexible member extends from the second inlet to the outlet of the embossing-laminating machine;
- and wherein, arranged at the outlet of the embossing-laminating machine is a further device for transferring the at least one web material anchoring element from the third flexible member to the first flexible member, positioned in a second transfer position along a portion of the threading path of the first flexible member, in the second transfer position the first flexible member being arranged adjacent to the third flexible member.
12 more elements
A web material converting line, comprising:
- a rewinding machine comprising:
- a web material advancement path and a threading device adapted to introduce a leading edge of the web material into the web material advancement path;
- wherein the threading device comprises:
- a first flexible member which is continuous and defines a threading path from an upstream position to a downstream position with respect to a web material threading direction, and a return path;
- a second flexible member;
- at least one web material anchoring element, adapted to be reversibly constrained alternately to the first flexible member and to the second flexible member;
- a device for transferring the at least one web material anchoring element from the first flexible member to the second flexible member, arranged in a transfer position along a portion of the threading path of the first flexible member, in the transfer position the first flexible member being adjacent to the second flexible member;
- a winding unit arranged along the threading path upstream of the transfer position;
- and
- an embossing-laminating machine upstream of the rewinding machine;
- wherein the embossing-laminating machine comprises a first inlet for a first ply of the web material, a second inlet for a second ply of the web material, an outlet for the first ply and the second ply;
- wherein a third flexible member extends from the second inlet to the outlet of the embossing-laminating machine;
- wherein a fourth flexible member extends from the first inlet of the embossing-laminating machine towards the rewinding machine;
- wherein arranged at the outlet of the embossing-laminating machine is a second device for transferring the at least one web material anchoring element from the third flexible member to the fourth flexible member, positioned in a second transfer position along a portion of the path of the fourth flexible member, in the second transfer position the fourth flexible member being adjacent to the third flexible member;
- and wherein arranged between the outlet of the embossing-laminating machine and the winding unit of the rewinding machine is a third device for transferring the at least one web material anchoring element from the fourth flexible member to the first flexible member, positioned in a third transfer position along a portion of the path of the fourth flexible member, in the third transfer position the fourth flexible member being adjacent to the first flexible member.
12 more elements
A method for threading a web material in a web material converting machine, comprising:
- engaging a leading edge of a web material to an anchoring element which is adapted to be constrained to a first continuous flexible member, wherein the first continuous flexible member defines a threading path from a first upstream position to a second downstream position with respect to a web material advancement direction in the machine, and a return path;
- inserting a leading edge of the web material along the threading path, through the machine up to the second downstream position;
- transferring the anchoring element, with the web material anchored thereto, from the first continuous flexible member to a second flexible member, in a transfer position, in the transfer position a portion of the path of the first continuous flexible member being arranged adjacent to a path of the second flexible member.
Dependencies are inferred from the claim text.