An overlapping portion of an insulating portion formed in an annular shape is held between a workbench having a linear projection and an ultrasonic horn having a circular projection with at least part of the linear projection and of the circular projection opposed to each other and ultrasonically welded. In the ultrasonic welding, even though the ultrasonic horn under ultrasonic vibration rotates on the overlapping portion of the insulating portion, the area in the overlapping portion held between the linear projection and the circular projection with at least part of the linear projection and of the circular projection opposed to each other is not reduced after ultrasonic vibration is applied to the ultrasonic horn.

An article with a component joined with stitchbonding to a nonwoven textile formed from a plurality of thermoplastic polymer filaments. The nonwoven material, component, yarn, and stitch pattern can be optimized using disclosed structures and components to provide the article with desirable characteristics such as increased tensile and tear strength, improved aesthetics, moisture resistance and to limit or modify the stretch of the article in one or more directions and the like. A variety of products, including apparel (e.g., shirts, pants, footwear) may incorporate the article. In some of these products, the nonwoven textile may also be joined to the component with other bonding structures such as heat bonding, adhesives and the like.

A device for welding profiled elements in plastic material includes: a base frame supporting retaining members of respective profiled elements, to engage the profiled elements with corresponding zones to be welded facing one another; a heater for heating the weld zones of the profiled elements; a unit to move the retaining members, to shift the profiled elements between a first reciprocal away direction and a second reciprocal closer direction wherein the zones to be welded are coupled together; and a removal unit utilizing milling The removal unit includes: a supporting frame positioned in correspondence to the retaining members; at least one machining tool; a motor part associated with the tool; and a movement member of the tool, to move it between a first idle condition and a second working condition wherein it is placed between the profiled elements.

Providing two sheets which are opposed to each other, and a plurality of elastic elements each disposed between the sheets to extend along a stretchable direction of a composite stretchable member in such a manner as to be stretchable in the stretchable direction, wherein: the sheets are bonded together in a plurality of bonding sections, wherein each of the bonding sections is configured to continuously extend along a line intersecting the stretchable direction and to intersect the plurality of elastic elements; and each of the elastic elements is bonded to the sheets at intersection points with the bonding sections.

A device for detecting defects during sealing of a package including a foil, and a method for detecting defects during sealing of a package including a foil which makes use of such a device. The device may include a distance sensor for determining the distance between at least two clamping elements, and a control unit coupled to the distance sensor for comparing the measured distances to predefined references. Such a device may be operated by, for example, positioning a foil and another part of a package to be connected to the foil between the clamping elements, moving the clamping elements toward one another until a connection between the foil and the other part of the package is formed, determining the distance between the clamping elements over a period, moving the clamping elements apart, and removing the package.

A device for applying a decorative strips (3, 4, 5, 6) with positional accuracy to a seat cover (2) with high-frequency welding, includes two tool halves (10, 30), of which one tool half has at least one electrode (14, 15, 16, 17). A first tool half (10) has at least two electrodes (14, 15, 16, 17) oriented parallel to each other, the width of the electrodes being adapted to the width of the decorative strips (3, 4, 5, 6) to be applied. Insulators (18, 19, 20, 21, 22) oriented in parallel are arranged between the electrodes (14, 15, 16, 17) and in parallel on the outside of the electrodes. The insulators (18, 19, 20, 21, 22) protrude beyond the electrodes (14, 15, 16, 17) in the direction of the second tool half (30). The insulators (18, 19, 20, 21, 22) are height-adjustable relative to the electrodes (14, 15, 16, 17).

A method for welding profiled elements in plastic material, includes the steps of: preparing two profiled elements, arranged with respective zones to be facing one another; making a groove in correspondence to at least one zone, by a removal operation on a peripheral edge of at least one profiled element; heating the zones to be welded; coupling the zones to be welded to one another, pressing the profiled elements one against the other so as to keep the zones to be welded in reciprocal contact. The coupling step includes: melting the zones to be welded into one another in order to define a welding bead; making a containing compartment defined by the groove, the welding bead being made internally of the containing compartment; and arranging a containing presser in correspondence to the containing compartment for preventing exit of the welding bead from the compartment itself.

A method for welding profiled elements in plastic material includes: preparing two profiled elements, arranged with respective weld zones facing one another; making a groove corresponding to at least one weld zone of the profiled elements, the grooving performed by a removal operation on a peripheral edge of at least one profiled element; heating the weld zones; coupling the zones to be welded to one another, pressing the profiled elements together to keep the zones to be welded in reciprocal contact. The coupling step includes: a sub-step of melting the zones to be welded into one another in order to define a welding bead; a sub-step of making a containing compartment defined by the groove, the welding bead being made internally of the containing compartment; and the step of arranging a containing presser in correspondence to the containing compartment for preventing exit of the welding bead from the compartment itself.

This vibration welding device is a device that vibration welds an airbag holding box and an installment panel having a tear line. The vibration welding device is provided with a support jig that carries and affixes the installment panel during vibration welding. The support jig is provided with a groove that permits thermal expansion during vibration welding of the installment panel at a position differing from the tear line.

Multi-layer bags may be formed to include first and second sidewalls joined along a first side edge, an opposite second side edge, and a closed bottom edge. The first and second layers may be non-continuously laminated together to include bonded regions in which the layers are bonded and unbonded regions in which the layers are not bonded. Such a bag may be described as a bag-in-a-bag type configuration in which the inner bag is non-continuously bonded to the outer bag. The inventors have surprisingly found that such configurations of non-continuous bonding provides increased and unexpected strength properties to the multi-layer films and bags.