Verfahren zur Herstellung eines Tabakbeutels

Details

Veröffentlichungs-Nr.

EP3153300

Aktenzeichen

EP15188793

Anmeldetag

7. Oktober 2015

Veröffentlichung

12. September 2018

Erteilung

12. September 2018

Rechtsraum

EP

IPC

B29C65/08A24F23/02// B29L9/00

Abstract

The invention refers to a method of manufacturing a tobacco pouch, wherein a workpiece, comprising at least three layers (26) of a thin material, is placed between a welding surface (38) of an anvil (32) and a welding surface (38) of a sonotrode (24) of an ultrasonic welding tool (30) and wherein the layers (26) are then sectionally joined in an ultrasonic welding process, wherein the respective welding surface (38) of at least one of said sonotrode (24) and/or said anvil (32) comprises a plurality of welding structures (40) that are spaced in a first direction (42) and in a second direction (44) to form a pattern (50) wherein each of said welding structures (40) comprises a plateau (48) and at least one descending side surface (54), wherein the descending side surface (54) is initiated by an edge (52) of the plateau (48). According to the invention opposing side surfaces (54) of at least two adjacent welding structures (40) are interconnected at a bottom part (58). The invention further refers to an ultrasonic welding tool (30) designed to be applied in the method of the invention and to a tobacco pouch, manufactured by a method of the invention.

Anmelder

Firma

Imperial Tobacco Limited

Land

🇬🇧 Großbritannien

Fachgebiete