A method for determining whether a sealing area of a primary packaging container for an ophthalmic lens is unacceptable for properly sealing a foil to the sealing area is disclosed. The method involves comparing the temperature of an infrared image of the sealing area to a reference temperature to determine if the difference in temperature exceeds a predetermined threshold.

In an example, a method of sealing a bond cavity is described. The method comprises placing an adhesive around a perimeter of a first structure to be joined to a second structure. The method also comprises positioning the first structure relative to the second structure such that the adhesive is disposed between the first structure and the second structure. The method also comprises merging the first structure and the second structure until the first structure and the second structure are separated by a desired gap for bonding. The method also comprises heating the perimeter to at least partially cure the adhesive to form a leak-proof bond cavity perimeter between the first structure and the second structure.

A method for producing a package comprising a formed part having at least one product cavity, and a lidding film covering the at least one product cavity, comprises the steps of: (a) defining a seam; (b) dividing the seam into a plurality of sections; (c) determining a pull-off force for pulling the lidding film from the formed part at least for a first section; and (d) sealing the lidding film to the formed part by means of a sealing device, wherein at least one first sealing temperature is selected for the first section based on the pull-off force determined according to step (c).

A method for producing and inspecting a package comprising at least one product cavity of a formed part sealed by a lidding film comprises the steps of: (a) sealing the lidding film to the formed part along a seam by means of a sealing device, which comprises a sealing contour with a plurality of segments; (b) detecting, by means of the sealing device, a parameter characteristic of the sealing quality of the seam in each segment; and (c) detecting a problem with the sealing according to step (a) based on the parameter detected according to step (b) in each segment.

A medical dressing to treat sucking chest wound, and methods of forming the medical dressing. The methods include the steps of overlaying a cover layer on an intermediate layer and the intermediate layer on a base layer such that openings in the intermediate and base layers are aligned and the cover layer overlays the openings; fusing together the cover layer, the intermediate layer and the base layer by applying an annular welding tool face to at least one of the cover layer and base layer and applying welding energy to the template; and applying an adhesive layer on a side the base layer opposite to the intermediate layer, wherein the adhesive layer extends entirely around the opening.

A packaging container for holding contents such as fresh food. The container comprises a tray having a flange, a pre-formed scaling ring and a flexible film for sealing in the contents of the tray. The sealing ring is made from fiber, filament or tape (“FFT”) that is shaped into a shape that matches the shape of the tray flange. The sealing ring is adhered to the tray flange by heat welding or other means and the flexible film is adhered to the sealing ring.

A method for producing a package which has a formed part with a product cavity, and a lidding film covering the product cavity. According to the method, a seam is defined, the seam is divided into sections, a pull-off force for pulling the lidding film from the formed part at least for a first section is determined, and the lidding film is sealed to the formed part. The sealing temperature for the first section is selected based on the pull-off force.

A method for manufacturing an air bag includes forming a bag portion surrounded by a welded portion extending in an annular shape by pressing at least one welding mold against two sheet materials arranged to be stacked from a stacking direction of the sheet materials. The welding mold is pressed against the sheet materials to form the welded portion including a welding bead portion protruding to an inside of the bag portion between the sheet materials. A pressing surface of the welding mold against the sheet materials is provided with a slope portion facing in the stacking direction of the sheet materials and in a direction of the inside of the bag portion at a position further on an outside of the bag portion than a position at which the welding bead portion is formed.

A system and method for bonding a first layer of material to a second layer of material includes a first electrically conductive plate, a second electrically conductive plate spaced apart from the first electrically conductive plate. The second electrically conductive plate is electrically grounded. A high frequency generator in electrical communication with the first electrically conductive plate supplies high frequency electrical signals to the first electrically conductive plate. An adhesive applied to one of the first and second layers of material has an electromagnetic susceptor material that when subjected to the electric field heats the adhesive to an adhesive curing temperature to bond the first layer of material to the second layer of material. A clamping mechanism applies pressure to one of the first and second layers of material to maintain contact between the first and second layers until an adhesive cure time has lapsed.

A sensor device has an insulative non-woven fabric and a conductive fabric forming an electrode. The conductive fabric is joined to one surface of the non-woven fabric by at least one of fusion and seaming.