A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, and may include a heating wire. The heating wire may be an NiCr wire stitched into holes in a cap or on the seal bar. Bushings may be disposed in the holes.

A flat strip 1, suitable for forming a tube flexible skirt, comprising a decorative film 15 superimposed on a primary film 16, said primary film 16 consisting of a series of polymeric layers and comprising a sealable inner layer 14 at the lower surface 20 of the strip 1, said decorative film 15 comprising a sealable outer layer 7 at the upper surface 19 of the strip 1 and a decorative layer 8, 9.

The primary film 16 comprises means for stabilizing the strip 1 and protecting the decorative layer 8,9 against heating.

A method for producing a tube skirt for a flexible tube, said tube skirt being manufactured from a flat strip 1 comprising a decorative film 15 superimposed on a primary film 16, said primary film 16 comprising a sealable inner layer 14 at the lower surface 20 of the strip 1 as well as two stabilizing layers 11, 13, said decorative film 15 comprising a sealable outer layer 7 at the upper surface 19 of the strip 1, and a decorative layer 8, 9.

This method comprises the following steps: winding the flat strip 1 into the form of a sleeve to shape the tube skirt; superimposing a first side border 2 of the strip 1 on a second side border 2 of the strip 1 to form an overlapping area 3, the sealable inner layer 14 of the primary film 16 of the first side border 2 overlapping the sealable outer layer 7 of the decorative film 15 of the second side border 2; applying a heating temperature T2 to the inside of the tube skirt at the inner face 22 of the overlapping area 3 to produce the side weld of the tube skirt; simultaneously with the application of the heating temperature T2, applying compression between the outer 21 and inner 22 faces of the overlapping area 3 so as to finalize the side weld of the tube skirt.

A device for manufacturing a tube skirt from a flexible strip, comprising a housing, a cylindrical elongated mandrel 30, means used to advance and guide this flexible strip to shape it in the form of a sleeve around the mandrel 30, one of the side borders of this strip overlapping the other side border to form an overlapping area to be welded, an inner heating means 32 located in the mandrel 30 to heat the inner face of the overlapping area, and inner cooling means 33 located in the mandrel 30 to cool the inner face of the overlapping area and downstream from the inner heating means 32.

The device is characterized in that said cooling means 33 is arranged across from the overlapping area and configured to be in direct contact with the overlapping area.

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).

This method for producing a packaged food product portion includes the following steps: providing a cup defining an inner area for receiving the food product; cold pouring, at a temperature below 50 C., the food product into the receiving area of the cup; covering the food product using a thermally insulating lid arranged such that thermally conducting flaps of the cup extend toward the outside of the lid after the covering step; folding the flaps on an outer face of the lid opposite the receiving area; and heat-sealing the flaps on the outer face.

A laser welding apparatus is provides that includes: a support member including a heat generation portion which has a size that is limited to correspond to a size of a welding area of a plurality of plastic components and is made from a material that absorbs a laser beam and generates heat, and which generates heat of a temperature that is equal to or greater than a melting temperature of the plastic components; a laser beam irradiation unit for converging a laser beam to be transmitted through the plurality of plastic components, and irradiating the laser beam toward the heat generation portion through the plurality of plastic components; and a welding controller for causing a laser beam to be irradiated at the heat generation portion using the laser beam irradiation unit to thereby cause the heat generation portion to generate heat, and welding abutting faces of a welding area of the plurality of plastic components with heat that is generated.

A liner heat sealing device used to fuse two or more sheets of plastic or vinyl together along a straight line using a heating element and a temperature control unit to control the temperature of the device, the device having three separate temperature zones along a linear axis, including a front preheating segment, a central fusing segment and a rear cooling section, each section provided on the common linear sealing device.

A portable conveyor belt splicing apparatus is provided that includes an upper press assembly and a lower press assembly which include, respectively, upper and lower platen assemblies. The upper and lower press assemblies may each include a forced air cooling system for rapidly cooling platens of the platen assemblies. The upper and lower press assemblies may include insulating assemblies with resilient members that support the upper and lower press assemblies. The resilient members provide structural support and insulate the platens from the frame which reduces the power required to heat the platens. In one form, the apparatus includes a power supply circuit that can alternate between providing power to upper and lower heaters in response to the apparatus being connected to different types of standard power supplies. Further, the power supply circuit permits the use of a single recipe for a particular belt irrespective of the type of power supply.

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.