An ultrasonic processing system adapted to subject a web running in a machine direction to ultrasonic processing includes a first mechanical element defined by one of an ultrasonic horn and an anvil and a second mechanical element defined by a remainder. The web placed on an outer peripheral surface of a rotary drum moves conforming to the drum in a machine direction. The first mechanical element is provided on the inner side of the drum and the second mechanical element is provided on the outer side of the drum. The first and second mechanical elements repeat a step of forward movement and a step of backward movement in a direction intersecting the machine direction across the web. In both steps, the first and second mechanical elements come in close contact with each other by the intermediary of the web and thereby subject the web to the ultrasonic processing.

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°.

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.

A tool for pressing a foamed material onto a substrate, a manufacturing apparatus thereof, and a method for manufacturing a laminated structure of a heat-retaining container are disclosed. The tool comprises a body, a blade portion extending in a lengthwise direction from the body, and a press portion extending in the lengthwise direction from the body and configured for pressing the foamed material onto the substrate. The tool may be used to press a foamed material sheet onto a paper substrate and form a tear line on the foamed material sheet at the same time to simplify the manufacturing process of the laminated structure of a heat-retaining container.

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.

The invention relates to an apparatus (10) for embedding a continuous elastic cord (11) along an edge of a continuous plastic sheet (12). The apparatus comprises an adhesive applicator device operable to apply an adhesive (16) along the edge of the plastic sheet, a folder device (18, 20, 34) operable to provide a folded edge of the plastic sheet (12) so that the adhesive is within the folded edge, and a feed device (24) having a tension device (30) operable to feed the elastic cord (11) in tension into the folded edge so that the elastic cord (11) is in contact with the adhesive of the edge. A bonding device (38) is operable to activate the adhesive of the folded edge to bond the elastic cord (11) in tension to the adhesive within the folded edge and to bond the folded edge to the plastic sheet (12). The invention also relates to a plastic sheet having an elastic cord at an edge thereof, a method for manufacture of said plastic sheet, and products or covers made from said plastic sheet such as oversleeves, overshoes, hair nets or bin liners etc.

An ultrasonic welding system. The system includes an ultrasonic transducer assembly having a horn and a first transducer and a second transducer arranged to impart ultrasonic energy into the horn. The horn has a first part-interfacing surface and a second part-interfacing surface opposite the first part-interfacing surface. An actuator assembly is operatively coupled to the ultrasonic transducer assembly and configured to cause rotation of the horn. A controller is configured to: cause the actuator assembly to rotate the horn so that the first part-interfacing surface applies the ultrasonic energy to a first part along an entire length of the first part-interface surface while a first ultrasonic energy is applied through the horn via the first transducer to cause the first part-interfacing surface to vibrate back and forth along its entire length as the first ultrasonic energy is applied by the first transducer to the horn.

An energy apparatus can be configured for providing energy to an item being transferred over a rotatable drum. The energy apparatus can include a first energy mechanism configured to be fixedly coupled to the rotatable drum and rotate with the rotatable drum. The energy apparatus can also include a second energy mechanism configured to rotate around a circumference of the rotatable drum. The energy apparatus can additionally include a translation system coupled to the second energy mechanism and configured to move the second energy mechanism to an end position that allows the second energy mechanism and the first energy mechanism to provide energy to the item while there is no relative motion between the first energy mechanism and the second energy mechanism. Methods of providing energy to an item utilizing an energy apparatus are also disclosed.