73 results about "Induction sealing" patented technology

A closure comprising a top wall with an annular side wall depending there from. An induction foil is proximate an inner surface of the top wall and may have a ring or circular configuration. An RFID device is affixed or is integral with the closure a minimum distance from and/or orientation with the induction foil as to prevent damage to the RFID device during an induction sealing process and to reduce adverse operational effects of the RFID from the foil. The RFID may be active or passive and may be proximate or integral with the top wall or integral with the side wall of the closure. The RFID may be contained within a film wherein a portion of the film is inductively sealed to the closure.

An sealing system includes a frame, a ferrite core disposed within the frame, and a litz wire coil disposed proximate to the ferrite core for producing an electromagnetic field within the ferrite core, where the ferrite core and litz wire coil are adapted to direct the electromagnetic field toward a foil to seal an opening of a container with the foil. The sealing head is air cooled within the induction sealing unit.

An apparatus for storing a bioprosthetic device includes a container for receiving the bioprosthetic device within an opening in the container. The storage apparatus includes an induction seal having a foil layer and a heat seal layer for sealing the opening of the container. A pull tab is located on the induction seal and includes an aperture therein that facilitates bonding the induction seal to the container and/or otherwise sealing the container. A substantially hermetic seal is created by the induction seal. The apparatus may be opened with relative ease by pulling on the pull tab. The apparatus also reduces the risk of spillage of sterilant solution upon opening.

A container defines an interior volume, an opening into the interior volume, and a sealing surface bordering the opening. A closure assembly may be attachable over the opening and includes at least one of an induction seal liner, an inner seal, and a sealable film. A radio frequency identification tag includes a microprocessor and an antenna for receiving, storing, and transmitting selected digitized information. The induction seal liner, inner seal, and sealable film minimizes migration of fluids between the interior volume and the container exterior when the closure assembly may be engaged with the sealing surface. The radio frequency identification tag may be included in the closure assembly, or within the interior volume, or on the container exterior, or may be incorporated into the induction seal liner, inner seal, or sealable film, without the closure assembly electromagnetically interfering with the receiving, storing, or transmitting of digitized information.

A gas release container comprises a container body having a bottom wall and a side wall extending upwardly from the bottom wall and terminating at an upper edge, a removable closure affixed to the upper edge in a substantially gas-tight manner, and a gas release valve in a wall of the container body and operable to release gas from the container when the pressure differential between the interior and the exterior of the container is sufficient to open the valve. The removable closure can include a flexible gas-barrier membrane sealed to the upper edge of the container body. A lower surface of the membrane and the upper edge of the side wall comprise heat-sealable polymer materials, and the membrane is heat-sealed to the upper edge, preferably by induction sealing. The closure can include an overcap.

There is described an induction sealing device for heat sealing packaging material for producing sealed packages of pourable food product and fed in a first direction. The sealing device has induction means interacting with the packaging material by means of a pair of first active surfaces and a pair of second active surfaces interposed between the first active surfaces in the first direction; and the second active surfaces have, in the first direction, a width greater than the width of the first active surfaces at least along most of the length of the first and second active surfaces in a second direction perpendicular to the first direction.

A method for induction sealing a plastic part to a composite container using a pair of linear coils electrically connected to low frequency generators. The linear coils produce overlapping electromagnetic fields on either side of the container. Rotating the container assures even heating of the polyethylene liner and plastic part. The method produces a reliable seal between the liner and plastic part and can be used at high production speeds.

The invention relates the sensing device used to check sleeping state and interference with respiration. The device comprises spring mattress 1, and pressure sensing device. The spring mattress 1 comprises at least two vent longitudinal partition cushion (11, 12, 13, 14), the adjacent side walls (11a, 12a) are near, the bottoms of cushions(11b, 12b) are connected with each other, the sensing device is sealed elastic body(21, 22) with fluid, in the elastic body there is sensing elements(21a, 22a), the output end of sensing elements are connected with data processing device by wires, and the sealed elastic body(21, 22) is installed on the mattress. The invention improves the comfort degree and sensibility.

The present invention relates to a packaging insert that comprises a chamber that can be filled with an adsorbent. When the insert is positioned within a closed bottle, the adsorbent can entrap any moisture or gases generally targeted by the adsorbent selected. The insert is designed such that the container can be induction sealed with the insert positioned within the neck of the container.

The invention belongs to the technical field of the sensors and relates to a thermal convecting one-chip three-axial accelerating sensor. Basic principles of the invention are that air inside a sealed cavity body is inducted to do thermal convection through a heat-sensitive component, and an accelerating signal is transmitted through calculations. The invention comprises a packing cavity which is located on the surface of a heating wire temperature sensor and an etching cavity which is located under the surface of the heating wire temperature sensor. The packing cavity and the etching cavity are arranged in symmetry in four groups of sensors around center. The invention applies for a plurality of fields as automobile, game industry, aviation, ship navigation system, product for civilian use, military, and the like. The invention adopts thermal convection principles to test accelerating information, and has no mass block, and can work under high-g. The invention has impact resistance without adhesions or granules, low cost, low failure rate, high rate of good product, high sensibility, and strong anti-interference. Compared with original one-chip three-axial accelerating sensors of MEMSIC Company, a test for accelerating inside a three-dimensional space is available.

Long-term packaging using a combination of an induction seal and a reseal without release layers, both of which are activated by the induction heating process. The exemplary induction seal comprises a laminate of a heat-sealing layer, an aluminum foil layer, and a foam backing The exemplary reseal comprises a low-density polyethylene foam core sandwiched between first and second layers of solid low-density polyethylene film. The reseal deforms during the induction heating process to be shaped to engage the outer and inner peripheral surfaces of the finish, so that the reseal is hermetic even after the induction seat is removed. Preferred containers are PETE with PP compression closures. Replaceable desiccant and oxygen scavengers may used with food or other contained material. Precise timing of induction heating is required to achieve the desired result. Kits for making such packaging are disclosed.

A sealing device for sealing non-circular, in particular polygonal, for example tetragonal, hexagonal, octagonal or elliptical, container openings comprises one or a plurality of induction loops (11, 38, 41) for sealing purposes. Containers (2) comprise joined-on closure devices (3) with sealing discs (15) joined onto a sealing edge (14) of the container opening. The induction loops (11, 38, 41) are adapted to the shape of the sealing edge (14) and the spacing between the induction loop (11, 38, 41) and sealing edge (14) is constantly adjustable and selectable.

A sealing jaw for manufacturing a sealing seam in a heat-sealable packaging material. The invention furthermore relates to an induction sealing device with a sealing jaw and to a packaging machine with induction sealing device. In order to provide a sealing jaw with which a sealed and durable sealing seam can be produced, even when solid components of the in-filled product are trapped between the jaws that have to be moved towards one another, a sealing jaw is proposed with means of a sealing jaw with a sealing surface that is provided in order to come into contact with the heat-sealable material, and a rod or bar-shaped heating device that is provided in order to heat up the heat-sealable material, wherein a pressure element is provided on the sealing surface, projecting above said sealing surface, and distanced from the heating device.

An induction sealing device for producing packaged pourable food products from heat-seal sheet packaging material. The sealing device has a signal source, an inductor, and an impedance matching circuit connected between the signal source and the inductor. The impedance matching circuit has: two input terminals; a first and second line connected to the input terminals; a variable-capacitance stage having capacitive modules each made up of a capacitive element and a controlled switch; and a control stage to control the controlled switches. Each controlled switch includes: input terminals receiving a respective control signal from the control stage, with one input terminal of each controlled switch connected to the second line; a single two-way controlled switching element having a control terminal connected to the other input terminal of the controlled switch; a first current-conducting terminal connected to the first line, and a second current-conducting terminal connected to the second line.

An induction sealing device for the production of pourable food packaging, for which purpose transversely seals a tube (13) of sheet-like packaging material comprising at least one layer (12) of induction heatable material, said induction heating The heated material is covered by a plastic material (16). Said sealing device has: a generator (3), is used for producing alternating power signal S (ω); Inductor (4), is used for receiving alternating power signal S (ω) so that in said layer (12 ) to induce parasitic currents and locally melt said plastic material (16) to form a transverse seal; and a matching circuit (7) for optimum power between generator (3) and inductor (4) transmission. The matching circuit (7) includes an inductance-capacitance circuit, wherein the capacitance of the capacitive elements (20, 24, 25, 26, 27) with variable capacitance can be adjusted so that the current-voltage phase angle can be close to zero.

A sealing disc (10) is used for closing orifices of containers (5). It has a film (20) for inductively coupling heat into the sealing disc (10). A sealing layer (25) is provided on that side of the film (20) which is intended to face the interior of the container (5) in order to seal, in sealtight fashion, the sealing disc (10) on the orifice of the container (5). Lines of weakness (26) are provided in the sealing layer (25) so as to form a removal opening (27) once the film (20) has been drawn off. One or more layers (40), which are connected detachably to the film (20), are provided on that side of the film (20) which is remote from the sealing layer (25). The layers (40) detach mare easily from the lam (20) than the sealing layer (25) and also detach more easily from the orifice of the container (5) than the sealing layer (25). The layers (40) are formed such that said layers tightly close the removal opening (27) once the film (20) has been drawn off and the layers (40) have been placed onto the sealing layer (25) again.

The present invention relates to an induction sealing device for heat sealing packaging material for producing sealed packages. The present invention also relates to a method of manufacturing such an induction sealing device. The device comprises at least one inductor made of an alloy comprising silver and copper.