An ultrasonic sealing tool including an anvil with a sealing surface, a horn with a sealing surface facing the sealing surface of the anvil, the sealing surface of the anvil including a plurality of beads including a first bead having a first height and at least one second bead having a second height, the second height being less than the first height, the ultrasonic sealing tool delivering ultrasonic vibrations via at least one of the anvil and the horn to create a closure seal in a work piece positioned between the anvil and the horn, the closure seal including a first seal created by the first bead and at least one second seal created by the at least one second bead, the first seal having a weld depth greater than a weld depth of the at least one second seal.

A technique for accurately detecting a temperature of a sealing surface which is not affected by sealing conditions or the like is provided. A seal bar (1) is a rod-shaped seal bar having a sealing surface (11a) and includes a heater (13) and a temperature sensor (14). The heater (13) is provided in a main body of the seal bar (1) and extends in an extending direction (D1) of the main body (11). The temperature sensor (14) is provided at a position between the sealing surface (11a) and the heater (13) in the main body (11) of the seal bar (1) and is inserted into the main body (11) of the seal bar (1) from an end surface (upper end surface (112) or the like) which intersects a long side of the sealing surface (11a).

The invention relates to a cross seam joining device for a flexible packaging having at least one ultrasonic applicator (13a-13c), which is rotatably mounted on a shaft (13d) and can be rotated about an axis (13e) of the shaft (13d) arranged longitudinally to the cross seam (110, 111). The ultrasonic applicator (13a-13c) is designed to produce and bundle ultrasounds in a frequency range of 0.1 MHz-0.5 MHz, preferably from 0.5 MHz-2 MHz.

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.

A system and method to control and adjust operation variables of high frequency welding and cutting equipment is described that allows to adjust the operation frequency and pressure of high-frequency welding and cutting equipment, with the possibility to perform automatic variations to increase or decrease the power based on historical data stored in memory, to promote the welding and cutting of leather, synthetic and plastic laminated materials.

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.

An apparatus 10) and a method for manufacturing plastic bags (20) from at least two layers of plastic film (30, 40). The apparatus (10) comprises a lower tool plate (300) and an upper tool plate (400); the lower tool plate (300) is driven by a crank (650) on a servomotor (675). The servomotor (675) is connected to a measuring device (680) for measuring the power consumption.

A storage electric sealer comprises a casing, a sealing module, a spring switch, a support cover, a press bar, and a sliding plate. The casing and the sealing module are arranged on the casing. The support cover includes at least two containing grooves. The press bar provided with a sliding chute is pivotally connected with the pivoting holder of the casing. The sliding plate is provided with a heat insulation block and at least a stopper, both lateral side of the sliding plate being connected with the sliding chute of the press bar in a sliding manner. Wherein, the sliding plate is located at a closed position in storage state, so that the stopper is accommodated in the containing groove of the support cover. As such, the storage electric sealer can be transformed into a storage state by a modified sliding mechanism to reduce the volume and damage rate effectively.

A product detection system includes a first frame piece configured to be coupled to a first sealing jaw of a sealing machine, a second frame piece configured to be coupled to a second sealing jaw of the sealing machine, a first detector bar slidably coupled to the first frame piece, a second detector bar slidably coupled to the second frame piece, a first linear actuator coupled to the first detector bar to move the first detector bar, and a second linear actuator coupled to the second detector bar to move the second detector bar. An encoder is coupled to the second detector bar to detect movement of the second detector bar. The first and second linear actuators are configured to move the first and second detector bars toward one another.