The present invention relates to a method for joining paper material (2, 3) in a first joining region (20) and a second joining region (30), comprising the steps of: roughening the first joining region (20) and/or the second joining region (30), moistening the first joining region (20) and/or the second joining region (30), and joining the first and second joining region (20, 30) between a sonotrode (60) and an anvil (63) of an ultrasonic friction welding apparatus (6) by means of ultrasonic friction welding, wherein a vibration direction (A) of the sonotrode (60) is not parallel to a joining force direction (B) of a joining force of the anvil (63).

The present invention relates to a tubular bag machine for producing tubular bag packaging materials from paper, comprising a draw-off station (2) for drawing off a paper web (10), a roughening station (3) for the continuous roughening of at least one joining region of the paper web (10), a moistening station (4) for moistening at least one joining region of the paper web (10), a forming station (5) for forming a bag tube, and an ultrasonic sealing station (6) for sealing the joining region of the paper web (10).

A system and method for joining a plurality of paper material together with ultrasonic welding to form a hang tab for displaying products, such as, e.g., in a retail environment, without the use of an adhesive, such as, e.g., glue, and/or printing dye or ink. The paper hang tab may replace plastic hooks or tabs, which may be more environmentally beneficial. Two or more pieces of paper may be inserted into a gap between a sonotrode and an anvil of an ultrasonic joining device. A joining force from an actuator may be applied to secure the pieces of paper, and the sonotrode may oscillate a high-frequency. Adequate compaction of the pieces of paper is produced in addition to a high development of heat from friction generated in the micro-region of the thermoplastic coating. Melting of thermoplastic coating then forms a physical connection between the pieces of paper, effectively fusing them together.

Systems and methods for forming corrugated boards are disclosed. The system includes a single face unit configured to form a single face board having a fluted layer and an outer liner. The system also includes a single face buffer configured to store or hold a length of the single face board. The system has a glue station configured to attach a second outer liner to the single face board to form a single wall board. The system also has an ultrasonic unit configured to apply ultrasonic vibrations to the single wall board. The ultrasonic vibrations are configured to remove moisture from the single wall board, activate, heat, and/or dry an adhesive used to attach the fluted layer and the outer liners, and/or cause the fibers of the fluted layer and the outer liners to weave, intertwine, or otherwise stick together.

The cutting of fibrous material which does not melt easily is effected to avoid the unravelling of cut edges, using ultrasonic or laser beam techniques. The method includes (a) applying a thermoplastic powder material to the cutting region, and (b) applying thermal shock to the localised area, sufficient to destroy the fibres of the material, and melt the powder on either side of the cut, and (c) pressing the cut edges while the fused thermoplastic powder is still soft. Woven or non-woven fabrics have tendency to unravel, after cutting, and normally require a sewn hem. The method of the invention disposes of the sewn hem, and provides a thermo-cutting technique applicable to non-fusible or non-thermoplastic fibres.

Systems and methods for forming corrugated boards are disclosed. The system includes a single face unit configured to form a single face board having a fluted layer and an outer liner. The system also includes a single face buffer configured to store or hold a length of the single face board. The system has a glue station configured to attach a second outer liner to the single face board to form a single wall board. The system also has an ultrasonic unit configured to apply ultrasonic vibrations to the single wall board. The ultrasonic vibrations are configured to remove moisture from the single wall board, activate, heat, and/or dry an adhesive used to attach the fluted layer and the outer liners, and/or cause the fibers of the fluted layer and the outer liners to weave, intertwine, or otherwise stick together.

The present invention relates to a method for joining paper material (2, 3) in a first joining region (20) and a second joining region (30), comprising the steps of: roughening the first joining region (20) and/or the second joining region (30), moistening the first joining region (20) and/or the second joining region (30), and joining the first and second joining region (20, 30) between a sonotrode (60) and an anvil (63) of an ultrasonic friction welding apparatus (6) by means of ultrasonic friction welding, wherein a vibration direction (A) of the sonotrode (60) is not parallel to a joining force direction (B) of a joining force of the anvil (63).

Multi-layered absorbent bodies and methods of manufacture are disclosed. A method of forming an absorbent body may comprise moving a first covering material in a machine direction, moving a reinforcing material in the machine direction and combining the reinforcing material with the first covering material, the reinforcing material having a top side and a bottom side, applying absorbent material comprising superabsorbent particles to the top side of the reinforcing material, moving a second covering material in the machine direction and combining the second covering material with the first covering material and the reinforcing material to form a laminate structure of the first covering material, the reinforcing material, and the second covering material, with the first covering material disposed underneath the reinforcing material and the second covering material disposed on top of the reinforcing material, and embossing the laminate structure.

Systems and methods for forming corrugated boards are disclosed. The system includes a single face unit configured to form a single face board having a fluted layer and an outer liner. The system also includes a single face buffer configured to store or hold a length of the single face board. The system has a glue station configured to attach a second outer liner to the single face board to form a single wall board. The system also has an ultrasonic unit configured to apply ultrasonic vibrations to the single wall board. The ultrasonic vibrations are configured to remove moisture from the single wall board, activate, heat, and/or dry an adhesive used to attach the fluted layer and the outer liners, and/or cause the fibers of the fluted layer and the outer liners to weave, intertwine, or otherwise stick together.

A method for making a dual fluted corrugated board includes providing a first single face corrugated board having a liner layer and a fluted layer attached to the liner layer and providing a second single face corrugated board having a liner layer and a fluted layer attached to the liner layer. The method also includes arranging the first single face corrugated board and the second single face corrugated board such that the fluted layers thereof face one another and attaching the first single face corrugated board to the second single face corrugated board.