The present invention concerns a processing element for processing a material, like for example a sonotrode or an anvil, comprising a carrier surface which is substantially in the form of a cylinder or in the form of a segment of a cylinder and which is intended to come into contact with the material during processing, wherein the processing element is intended to be rotated about its longitudinal axis during processing so that the carrier surface rolls on the material to be processed, wherein arranged on the carrier surface is at least one structure element which projects beyond the carrier surface in the radial direction, wherein the structure element has a top side which is provided to come into contact with the material to be processed. To provide a processing element which reduces the abrupt deflection of the sonotrode when the material comes into engagement with and/or comes out of engagement with the carrier surface it is proposed according to the invention that the top side is at least portion-wise convexly curved in the peripheral direction with a radius of curvature which is less than the greatest spacing of the top side from the cylinder axis or comprises at least two surface portions which include an angle <180°.

[PROBLEM TO BE SOLVED]

To provide a method for readily forming an easily separable portion having an adhesive strength that is required as a package bag on packaging film, a package bag having an easily separable portion formed by this method, and a filling-packing machine utilizing this method.

[SOLUTION]

A method forming an easily separable portion in packaging film by interposing at least two packaging films between a horn emitting ultrasonic waves and an anvil oppositely disposed to the horn, and vibrating the packaging films by the ultrasonic waves, in which a vibratable layer is provided on the packaging film in at least one of the horn side and the anvil side.

The present disclosure relates to methods for making elastomeric laminates that may be used as components of absorbent articles. The elastomeric laminates may include a first substrate, a second substrate, and an elastic material located between the first and second substrates. During assembly of an elastomeric laminate, a beam is rotated to unwind the elastic strands from the beam, wherein the strands may include a spin finish. First bonds are applied to bond discrete lengths of the stretched elastic strands with and between the first substrate and the second substrate, wherein the discrete first bonds are arranged intermittently along the machine direction. In addition, second bonds are applied between consecutive first bonds to bond the first and second substrates directly to each other, wherein the second bonds extend in the machine direction and may be separated from each other in a cross direction by at least one elastic strand.

A rotary device for welding a continuous web includes a rotary element, support elements for supporting the web, supported by the rotary element, and a plurality of welding units for welding the web. Each welding unit passes from a non-operating position to an operating position and vice versa, and includes a first movement device for commanding a relative rotation of an anvil element relative to a welding tip and a second movement device for moving the anvil element relative to the welding tip such that a contact surface of the anvil element and a contact surface of the welding tip make contact with a portion of the web in a zone between them, and vice versa. First and second drive mechanisms drive the first and second movement devices. The first and second drive mechanisms are configured to vary a positioning of the welding tip relative to the axis.

The present disclosure relates to methods for making elastomeric laminates that may be used as components of absorbent articles. Aspects of the methods for assembling elastomeric laminates may utilize elastic strands supplied from beams that may be joined with first and second substrates, and may be configured to carry out various types of operations, such as bonding and splicing operations.

There are disposed, in a width direction of an anvil roll, a plurality of first projections for producing joint portions where a pair of sheets are jointed to each other; each of the first projections extends in a circumferential direction of the anvil roll and includes a carrying groove carrying an elastic member while the elastic member has entered in the groove; and between one first projection and another first projection adjacent to each other in the width direction, at least one receiving part for receiving the pair of sheets is arranged.

A system and method for controlling the speed of both a continuous web and a bonding apparatus is provided in order to effectuate stronger bonds in the web. The bonding system includes a velocity changing device for increasing and decreasing a velocity of the web in a machine direction, an anvil and a corresponding ultrasonic horn that interact to form ultrasonic bonds on the web, and an anvil actuator configured to control a movement of the anvil. A control system is also included in the bonding system for controlling operation of the anvil actuator the velocity changing device, with the control system programmed to decrease a moving velocity of the web from a feed velocity to a bonding velocity as the web passes between the anvil and the ultrasonic horn and control movement of the anvil to synchronize the movement of the anvil with the moving velocity of the web.

Described is a process for introducing perforations in a laminate that comprises a silicone gel. The process includes the following steps: bringing an array of perforating elements in contact with a deformable layer of a laminate that at least includes a substrate layer, a layer comprising a silicone gel and a deformable layer, wherein said deformable layer covers said layer including the silicone gel; applying ultrasonic energy to said laminate in order to simultaneously introduce a plurality of perforations into said laminate, while providing deformed portions in said deformable layer, wherein said deformed portions penetrate into the plurality of perforations in said laminate; after having introduced said plurality of perforations into said laminate, keeping said deformable layer in contact with said layer including the silicone gel, such that said deformed portions remain penetrating into said plurality of perforations, for at least 12 hours.

The methods herein relate to assembling an elastic laminate with a first elastic material and a second elastic material bonded between first and second substrates. During assembly, an elastic laminate may be formed by positioning the first and second substrates in contact with stretched central regions of the first and second elastic materials. The elastic laminates may include two or more bonding regions that may be defined by the various layers or components of the elastic laminate that are laminated or stacked relative to each other. In some configurations, a first plurality of ultrasonic bonds are applied to the elastic laminate to define a first bond density in the first bonding region, and a second plurality of ultrasonic bonds are applied to the elastic laminate to define a second bond density in the second bonding region, wherein the second bond density is not equal to the first bond density.

A joining apparatus includes a fusing mechanism part that joins two thermoplastic sheet-like materials by fusing, a sticking mechanism part that sticks an adhesive tape along a joined portion of the sheet-like materials, a workbench having a placement surface on which the fusing mechanism part and the sticking mechanism part are disposed side by side, the placement surface allowing the sheet-like materials in an unfolded state to be placed thereon, and a guide that allows an end portion to be joined of one of the sheet-like materials and an end portion to be joined of the other sheet-like material to overlap each other while aligned along a plane intersecting the placement surface, each of the end portions to be joined of the sheet-like materials being placed on the placement surface, and to feed the overlapping end portions to be joined. The fusing mechanism part fuses and joins the end portions.