| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 053477000 | By heat sealing | 45 |
| 20090038273 | Sealing System for a Packaging Apparatus - A sealing jaw apparatus for a film wrapping machine utilizes a continuous web of thermoplastic film. The sealing jaw apparatus includes a first jaw unit to one side of a film travel path. The first jaw unit includes spaced-apart clamp arms and a heated sealing bar located between the spaced-apart clamp arms. The heated sealing bar includes spaced-apart noses defining a slot therebetween. A second jaw unit is to an opposite side of the film travel path. The second jaw unit includes spaced-apart gripping surfaces that are engaged by the spaced-apart clamp arms for gripping the thermoplastic film. Spaced-apart sealing surfaces are engaged by the noses of the heated sealing bar for sealing the thermoplastic film at spaced-apart locations in a film running direction. A knife assembly severs the thermoplastic film between the spaced-apart locations. | 02-12-2009 |
| 20090044496 | Method and apparatus for sealing a glass package - An apparatus for sealing a glass package by applying a force to a glass assembly while simultaneously irradiating a sealing material disposed between the two glass substrates with a beam of radiation. The applied force is translated in unison with the radiation beam. The radiation cures and/or melts the sealing material, depending upon the sealing material. The applied force beneficially improves contact between the glass substrates and the sealing material during the sealing process, therefore assisting in achieving a hermetic seal between the substrates. | 02-19-2009 |
| 20090049804 | Portable Aluminum Foil Sealing Apparatus - The present invention is an aluminum foil sealing apparatus which is simple in structure and readily applied for various size of vessel. The invention is comprising: a main body on the upper surface of which a manipulator is provided and on the lower surface of which a power input unit is provided; a coil unit formed of a case in which a number of induction coils are disposed concentrically and horizontally; a power supply device which supplies electric power to the coil unit; a high frequency generator which is connected with the power supply device; a selector whose one end is connected with the power supply device and whose other end is connected in parallel with the respective induction coils, to thus supply one of the induction coils with the power; and a vessel mounting table arranged on the lower portion of the main body. | 02-26-2009 |
| 20090090088 | SEALING DEVICE AND METHOD FOR PRODUCING SEALED PACKAGES OF A POURABLE FOOD PRODUCT - A sealing device for producing sealed packages from a tube of packaging material fed along a path and filled with a pourable food product, comprising: a frame; a pair of jaws movable cyclically with respect to the frame and along part of the path to grip the tube; ultrasonic sealing means carried by a first jaw to seal the tube; and power means including a primary winding fixed to the frame and connectable to an electric energy source, and a secondary winding carried by the first jaw, supplying the sealing means, and receiving electric energy by electromagnetic induction from the primary winding as the first jaw travels past the primary winding; and the device having transformer means supplied by the electric energy source with a first voltage value, and supplying the primary winding with a second voltage value lower than the first voltage value. | 04-09-2009 |
| 20100089012 | CASE SEALER WITH INTEGRATED HOT MELT DISPENSING SYSTEM - A case sealing system comprising an integrated hot melt processing, dispensing and application system whereby the bottom and the top of a filled box are both substantially simultaneously sealed with a hot melt adhesive. | 04-15-2010 |
| 20100146911 | SEALED PLASTIC CLOSURE AND METHOD FOR MAKING THE SAME - A sealed plastic container and a method for producing it are provided. The method for producing the sealed plastic container includes the steps of providing a container body having an end, providing a closure member having a skirt, inserting the closure member into the container body, heating the closure member skirt and container body end, and rolling the closure member skirt top and container end inward thereby fusing the closure member to the container body. | 06-17-2010 |
| 20100236197 | Packaging - An ultrasonic sealing device for a top fin of a gable-topped carton includes two jaws consisting of a jaw ( | 09-23-2010 |
| 20100287892 | APPARATUS AND METHOD FOR SEALING A CONTAINER - A container sealing apparatus | 11-18-2010 |
| 20100313526 | THERMALLY-CONTROLLED FRICTION BONDING OF WORKPIECE LAYERS - A system for controlling the strength of seals imparted to workpiece layers by a sealing roll and an anvil roll, the sealing roll and the anvil roll arranged on opposing sides of a conveyed web of workpiece layers, heating elements provided on at least one of the rolls, temperature sensors provided on the at least one of the rolls, and a controller in communication with the sensors and in operable communication with the heating elements. The sealing roll includes a textured sealing surface, the textured sealing surface being divided into a plurality of regions, the texture of a first of the regions being different from a texture of a second of the regions. By controlling the temperature of the respective regions, detrimental effects of anvil wear on the strength of the seal imparted to the workpiece layers may be offset, increasing the service life of rolls. | 12-16-2010 |
| 20110005175 | Method and Apparatus for forming a Sealed Seam between a Tear-off Film and a Packaging Member - A method of forming a sealed seam between a tear-off film ( | 01-13-2011 |
| 20110167772 | Heat-seal device - A heat-seal device generally includes a heat source, a thermal conductor, which encapsulates at least a portion of the heat source and is capable of transferring heat from the heat source, and a thermal insulator, which substantially surrounds the thermal conductor but leaves a portion thereof exposed, the exposed portion of the thermal conductor providing a heat-seal contact surface, which is adapted to be brought into contact with a material to be sealed. | 07-14-2011 |
| 20120005993 | METHODS AND APPARATUS FOR FORMING PACKAGES USING NON-LINEAR SEAL JAWS - New and improved seal jaws and methods for creating a seal on a package containing a high-profile product therein are described herein. The seal jaws are configured to seal overlapping wrapping film segments together adjacent the product in a seal zone where the height of the product results in additional film width. The height of the product creates an inward pull that can prevent the additional film width from being taut, which can result in folds or wrinkles in a subsequently formed seal. Advantageously, the seal jaws described herein have a non-linear configuration that provides extra sealing surface area as compared to linear surfaces over the same lateral distance. The extra sealing surface is provided by an array of curvilinear peaks and valleys, where the peaks tension the overlapping film segments in the seal zone to substantially prevent the additional film width from forming folds in a subsequently formed seal. | 01-12-2012 |
| 20120198797 | SEALING APPARATUS FOR MULTILAYER FILM - The present disclosure relates to a heat sealing apparatus including an insulator sealing head assembly and a container cavity, and a process for manufacturing an insulator sealing head assembly. The insulator seal head assembly is specifically designed to accommodate specialty films, such as multilayer film, used to seal food containers as described herein. | 08-09-2012 |
| 20130125516 | HERMETICALLY SEALED GLASS PACKAGE AND METHOD OF MANUFACTURE - A method for manufacturing a hermetically sealed package is provided, using a laser to heat a frit, disposed in a pattern between two substrates, such that the heated frit forms a hermetic seal which connects the substrates. | 05-23-2013 |
| 20130167486 | MULTILAYER FILM - Multilayer film which comprises a core layer (C) and two outer layers (O—, O-2) sandwiching the core layer, wherein (i) the core layer (C) comprises a bimodal ethylene/1-butene/C | 07-04-2013 |
| 20140013717 | Sealing Device For A Pouched Strip To A Cladding Film Such As To Obtain A Blister Strip - A sealing device (D) for sealing a pouched strip (N) to a cladding film (P) for obtaining a blister strip (B) has a pair of pair of heat-welding plates ( | 01-16-2014 |
| 20150033676 | METHOD AND APPARATUS FOR BAG CLOSURE AND SEALING - A method and apparatus for sealing a bag made of a polymeric material by applying heat activated layers on different portions of the bag, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric material; after creasing the bag along a fold line, applying heat at a temperature below the softening point temperature of the polymeric material to activate the first adhesive layer and the second adhesive layer to adhesive states after the bag has been filled with contents; and folding the bag to form an adhesive-to adhesive seal by contact between the heat activated first adhesive layer and the heat activated second adhesive layer. | 02-05-2015 |
| 053478000 | Separate closure | 13 |
| 20080216453 | Heated Sealing Strip - An actuator and method for a heated sealing strip is disclosed. The actuator and method comprise embedding at least one wire ( | 09-11-2008 |
| 20080276572 | Method and Device for Sealing a Tear-off Foil onto a Packaging Element - Method for sealing a tear-off foil ( | 11-13-2008 |
| 20090044497 | MACHINE FOR SEALING CARTON - A packaging apparatus forms a completely sealed composite package. The apparatus employs a continuous process which involves conditioning a surface of the package substrate. The substrate includes an adhesive coating that can be reactivated by infra-red radiation and adheres the package substrate to a juxtaposed face of a second surface. The apparatus uses rollers ( | 02-19-2009 |
| 20090100805 | SEALED PLASTIC CLOSURE AND METHOD FOR MAKING THE SAME - A sealed plastic container and a method for producing it are provided. The method for producing the sealed plastic container includes the steps of providing a container body having an end, providing a closure member having a skirt, inserting the closure member into the container body, heating the closure member skirt and container body end, and rolling the closure member skirt top and container end inward thereby fusing the closure member to the container body. | 04-23-2009 |
| 20090113851 | Packaging seal plate having a shaped face - A seal plate for use in sealing ophthalmic lens blister packages having a laminate foil cover and plastic shell for containing an ophthalmic lens and lens solution therein, the seal plate including a heated plate body and sealing face. The sealing face protrudes from the plate body and has an irregular shape. The sealing face further engages the laminate foil cover and displaces moisture present between the foil cover and plastic bowl body to induce a heat seal therebetween. | 05-07-2009 |
| 20090183470 | INDUCTION SEALER SYSTEM WITH TEMPERATURE SENSOR - An induction foil cap sealer of the present invention includes a cap foil sealer head installed along a conveyor. A controller is operatively connected to the cap sealer head. An infrared detector is adapted to obtain temperature data from a work piece on the conveyor. An electronic memory storage device is capable of storing electronic data, and is operatively connected to the controller. A comparator is in communication with the controller, the electronic memory and the infrared detector. The comparator compares the temperature data with pre-stored electronic data in the electronic memory storage and sends a signal to the controller based on the comparison. | 07-23-2009 |
| 20100018167 | Method and Apparatus for Sealing Capsules - The present invention relates to a method and apparatus for sealing telescopically joined hardshell capsules. The method comprises i. placing the capsule ( | 01-28-2010 |
| 20100107568 | METHOD AND APPARATUS FOR HEAT-SEALING CONTAINER - A heat welding member | 05-06-2010 |
| 20100192522 | Retractable Clip Press - The specification discloses a cardboard and blister pack packaging and sealing machine that includes an upper and lower heater and die combination that can be compressed together over a package for sealing using heat activated adhesives. The machine may use at least one piston and rod device or pump to provide the necessary energy or pressure. The machine may include a moveable tray containing at least one aperture to hold an unsealed package wherein the unsealed package can be moved proximate to the upper and lower heaters and dies and the upper and lower heaters and dies can press together. In this way, both the top and bottom dies may be heated and the operator is not required to remove the sealed packaging from the hot die. | 08-05-2010 |
| 20120324836 | METHOD OF APPLICATION OF CLOSURE LINER IN HOT FILL PACKAGES - A method of applying a liner to a container mouth in a hot-fill operation, said method comprising the steps of: placing the liner over a mouth sealing surface of the container; heating the liner by induction or conduction; and cooling the liner immediately thereafter while biasing the liner against the mouth sealing surface for a sufficient length of time to permit curing and sealing of the liner to the mouth sealing surface. | 12-27-2012 |
| 20140215973 | APPARATUS AND METHOD FOR SEALING A CARDBOARD BASED CONTAINER - The invention concerns an apparatus for sealing an open end of a cardboard based container containing a powder, wherein the apparatus comprises: a welding unit configured to fasten a lid to the container, said welding unit comprising an inductive welding energy generator for melting of a weldable layer that forms part of the container and/or the lid; and transporting means configured to transport a flow of containers to and from the welding unit. The invention is characterized in that the transporting means comprises, in a container flow order, a feeding arrangement, a main conveyor member and a movable gripping arrangement, wherein the feeding arrangement is configured to transfer containers one by one in a continuous manner to the main conveyor member, wherein the movable gripping arrangement is configured to transfer containers from the main conveyor member to the welding unit, and wherein the apparatus is arranged in such a way that, during normal operation of the apparatus, the containers line up close to each other at an upstream side of the feeding arrangement, wherein the feeding arrangement is configured to, during operation, separate adjacent containers from each other in the direction of transport by increasing the feeding speed of each individual container along the feeding arrangement and thereby increasing the distance between adjacent containers fed along the feeding arrangement, wherein the main conveyor member is configured to operate at a transport speed that approximately corresponds to, and is uniform in relation to, a discharge speed of the containers when fed out from the feeding arrangement such that containers transferred to and along the main conveyor member remain separated, wherein the moveable gripping arrangement is configured to grip at least two containers and transfer these containers simultaneously from the main conveyor member to the welding unit, and wherein the welding unit is configured to simultaneously fasten a lid to each of the simultaneously transferred containers. The invention also concerns a method for operating an apparatus of the above type. | 08-07-2014 |
| 20140215974 | PACKAGE WITH LID SEALING SYSTEM - A package includes a container and a lid adapted to mate with a brim of the container. The lid closes a top opening in the container when mounted on the container. | 08-07-2014 |
| 20140260114 | SYSTEM, APPARATUS, AND METHOD FOR SEALING A COVER ONTO A CONTAINER - The present invention relates to a system for sealing a cover onto a container. This system includes a die comprising a surface into which is formed a container receiving cavity and a groove. The system also includes a seal comprising a groove insert member comprising a body and a neck formed at one end of the body and a contact member comprising a first end and side walls extending to a second end, where the contact member is connected to the neck at the first end, the first end being wider than the neck to form two opposing edges that extend laterally from the neck, where the groove insert member is removably seated in the groove so that the two opposing edges rest on the surface to seal the groove. Also disclosed is a seal and a method of sealing a cover onto a container. | 09-18-2014 |
| 053479000 | Of preformed nonfreestanding container deformed by contents (e.g., bag, tube) | 15 |
| 20090025345 | Retortable packaging film with having seal/product-contact layer containing blend of polyethylenes and skin layer containing propylene-based polymer blended with polyethylene - A retortable multilayer packaging film comprises a crosslinked first layer which serves as an outer heat seal/product contact layer, and a crosslinked second layer which serves as an outer heat seal/skin layer. The crosslinked first outer heat seal/product contact layer comprises a blend of a homogeneous ethylene/alpha-olefin copolymer and a heterogeneous ethylene/alpha-olefin copolymer and/r a propylene/ethylene copolymer having a melting point of from about 110° C. to about 150° C. and having up to 4.9 weight percent ethylene mer. The crosslinked outer heat seal/skin layer comprises a blend of: an isotactic propylene-based polymer, and a homogeneous ethylene/C | 01-29-2009 |
| 20090049805 | Device and method for transverse sealing | 02-26-2009 |
| 20100107569 | Plastic tube sealing and test system - The present invention may be used for plastic tube sealing and testing. A housing may have in a sealing chamber a tube sealing positioning apparatus with a tube holder slidable on a vertical guide from a lower portion to an upper portion to be positioned adjacent a heating apparatus and a clamping apparatus. The tube holder may be moved and positioned by a linear positioning device. The heating apparatus may have a nozzle to direct heated air on an open end of a plastic tube. The clamping apparatus may have two clamping devices slidably disposed to clamp the heated open end of the plastic tube to fuse the tube wall adjacent the open end. A spacing distance sensor and a tube position distance sensor may be attached to the clamping devices for sensing the position of the tube and the spacing of the clamp jaws of the clamping devise. A control processor may be connected to the linear positioning device to control movement and dwell time of the tube holder. The heating apparatus and clamp positioning device may be connected to the control processor to control heat application and clamp jaw spacing and clamp time. A sealed tube may be attached to a top cover of a test container to be positioned in the test container. A sealing disk may be positioned on the top cover to close an aperture in the cover. The sealing disk may have a port to direct a fluid pressure into a mouth of the tube and a port to apply a vacuum to the test container. The control processor may control the amount of pressure or vacuum applied on a time basis for conducting a test. | 05-06-2010 |
| 20100107570 | PREPARED MEDICATION BAGGING SYSTEM AND METHOD - An apparatus for sealing prepared medications in enclosures includes a tubular sleeve having an open first end, an open second end, and an outer surface. The first end includes at least one first locking member for securely attaching the tubular sleeve to another member. The apparatus also includes a length of a flexible packaging sleeve that is open at one end and has an open interior space. The packaging sleeve is disposed about the outer surface of the tubular sleeve in a compressed form. The open end of the sleeve is sealingly attached to the first end of the tubular sleeve. A tensioner device is disposed about an outer surface of the packaging sleeve and includes a first section that couples the first end of the packaging sleeve to the tubular sleeve and at least two elongated tensioner arms that extend along a length of the tubular sleeve. The compressed packaging sleeve is disposed underneath the tensioner arms such that the tensioner arms apply tension to the packaging sleeve and control the unfurling thereof from the tubular sleeve. The open first end of the tubular sleeve is in communication with the open interior space of the packaging sleeve. | 05-06-2010 |
| 20100154362 | Method and Apparatus for Bag Closure and Sealing - A method and apparatus for sealing a bag made of a polymeric material by applying heat activated layers on different portions of the bag, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric material; creasing the bag along a fold line, applying heat at a temperature below the softening point temperature of the polymeric material to activate the first adhesive layer and the second adhesive layer to adhesive states after the bag has been filled with contents; and folding the bag to form an adhesive-to adhesive seal by contact between the heat activated first adhesive layer and the heat activated second adhesive layer. | 06-24-2010 |
| 20100154363 | PROCESS AND APPARATUS FOR CLOSING MESH BAGS - The invention relates to a process for closing mesh bags, in which a longitudinal portion of constricted mesh is compressed together with a portion of at least one plastic strip provided with a width greater than that of the constricted mesh such that respective side bands of the strip project on both sides of the constricted mesh, the process further comprising the operations of introducing in a die the compressed longitudinal portions of strip and mesh such that the mentioned side bands are bent towards the constricted mesh; folding the bent side bands of the strip over the constricted mesh; and causing the melting of the materials forming the folded strip and the constricted mesh, determining one or several attachment sections between the folded strip and the constricted mesh along the compressed portions of the mesh and of the strip. | 06-24-2010 |
| 20110252750 | MEDICINE PACKING UNIT AND PACKING CONTROL METHOD THEREOF - A medicament-packing unit contains a sheet feeder, a medicament-feeding hopper and a heat-sealing section. The sheet feeder feeds a packing sheet, folded into two in a longitudinal direction, to the heat-sealing section. The medicament-feeding hopper provides a medicament on the packing sheet fed by the sheet feeder. The heat-sealing section seals the packing sheet to pack the medicament provided on the packing sheet. The heat-sealing section contains a horizontal sealing roller, a first drive motor, a vertical sealing roller, a second drive motor, and a motor controller. The horizontal sealing roller seals the packing sheet in a horizontal direction. The first drive motor drives the horizontal sealing roller. The vertical sealing roller seals the packing sheet in a vertical direction. The second drive motor drives the vertical sealing roller. The motor controller controls the first drive motor and the second drive motor. | 10-20-2011 |
| 20120167531 | METHOD FOR ENERGY-EFFICIENT SEALING OF TUBULAR BAGS - The embodiments of the invention relate to a method for creating a force for a welding jaw of a vertical tubular bag machine. The welding jaw is moved back and forth along a path to strike a second welding jaw moving in the opposite direction. A tubular film is compressed between the second jaw and at least one sealing surface of the welding jaws, to weld the tubular film by ultrasonic vibrations applied thereto via the sealing surface at an applied pressure under a sealing force (Fs) within a sealing time (ts). The sealing force (Fs) is predetermined by a control unit such that the sealing force (Fs) runs along a sealing force curve within the sealing time (ts). The sealing force curve has a first relative sealing force maximum (Fs | 07-05-2012 |
| 20130031875 | MODIFIED MANIFOLD SYSTEM FOR FOLDING AND SEALING BAGS - An apparatus adapted for sealing bags includes a hot air manifold along which a bag is conveyed after the bag has been filled with contents and closed. The manifold includes a hot air chamber having first air passages transmitting hot air under pressure to heat a portion of a first adhesive layer on the bag to an adhesive state, and second air passages transmitting hot air under pressure to heat a second adhesive layer on the bag to an adhesive state. A hot air deflector covers selected second air passages transmitting the hot air, wherein the apparatus is adapted for sealing woven polymeric bags with the adhesive layers. The hot air deflector is moveable to a position uncovering the selected second air passages to increase the amount of hot air, wherein the apparatus is adapted for sealing multi-wall paper bags. | 02-07-2013 |
| 20140069064 | INDUCTION SEALING DEVICE FOR HEAT SEALING PACKAGING MATERIAL FOR PRODUCING SEALED PACKAGES OF POURABLE FOOD PRODUCTS - There is described a heating induction sealing device for forming a seal in a packaging material comprising an electrically conductive element and advancing, in use, along a first direction; the sealing device comprises at least one inductive element; inductive element comprises a first and second leg within which alternate currents flow, in use, in opposite direction; first leg is configured to induce, in use, a first portion of an eddy current within an area to be sealed of packaging material; second leg faces first leg along a second direction; second leg is configured to induce, in use, a second portion of eddy current within area to be sealed of packaging material; first and second leg have a length in a third direction parallel, in use, to first direction and transversal to second direction; first and second leg are nonsymmetrical with respect to third direction, so that seal is formed as continuous along second direction. | 03-13-2014 |
| 20140090339 | METHOD AND SYSTEM FOR FOLDING AND SEALING BAGS - A system including multiple bags each having a first adhesive material on a first panel, and second adhesive material on a stepped construction of the bag, and a third section of each bag being free of adhesive, further including a hot air manifold along which the bag is conveyed after the bag has been filled with contents and closed, which heats the first adhesive material and the second adhesive material to their adhesive states; a section of the hot air manifold along which the third section free of adhesive is conveyed, which minimizes adhesive contamination; a blade to bias the stepped construction of the bag to follow along the manifold; and a trailing end of the blade to fold the bag along its third section without displacing or expelling adhesive from the third section, which minimizes adhesive contamination of surfaces of the bag. | 04-03-2014 |
| 20140311100 | Packaging Apparatus and Method of Making Packages - A packaging apparatus including a cutting device, the cutting device comprising an elongate holder, an elongate knife having an elongate cutting edge, and a heat seal device located on the elongate holder on opposed sides of the knife, the heat seal device comprising a pair of elongate pressure strips projecting outwardly from the elongate holder, each pressure strip extending along a respective side of the knife, wherein each pressure strip comprises an elongate bar mounted for sliding movement in a respective slot in the elongate holder, the sliding movement varying the distance an outer edge of the elongate bar projects from the elongate holder, and a biasing element within the respective slot, the biasing element engaging an inner edge of the elongate bar and arranged to bias the elongate bar outwardly of the slot. A packaging method is also disclosed. | 10-23-2014 |
| 20140345236 | Dual Heat Strip And Removable Tray For A Vacuum Sealing Machine - A vacuum sealing machine includes a base assembly having an upper base portion removably secured to a lower base portion and displacing relative to the lower base portion from a closed position to an open position. Two or more heating strips are disposed on the lower base portion, and each of the heating strips is adapted to seal a portion of an open end of a sealable bag disposed between the lower and upper base portions. At least one securement feature is disposed on the upper base portion and is adapted to apply pressure to a portion of the open end of the inserted sealable bag when the sealable bag is sealed by at least one of the heating strips. In addition, A control unit including at least one microprocessor and a memory unit is in communication with each of the two or more heating strips. | 11-27-2014 |
| 20140360138 | APPARATUS AND METHOD FOR CLOSING AND SEALING BAGS IN BALE ENVELOPING APPARATUS - An apparatus for closing and sealing a preformed polypropylene bag after a bale has been inserted therein as the bale and bag traverse along a longitudinal line of travel. Left and right rotatable side flaps fold the left and right bag closure flaps onto the bale. A bottom rotatable fold plate partially folds the bag bottom closure flap and a top fold bar is extended and folds the top bag closure flap onto the bale. The bottom fold plate then folds the bag bottom closure flap onto the bale. The top and bottom bag closure flaps are sandwiched between the rotatable side flaps and the bottom fold plate and over a slack bar therebetween forming a slack portion. A heating assembly directs heat to the slack portion melting the polypropylene and a press plate is extended to the slack melted portion thereby fusing the bag closure flaps together. | 12-11-2014 |
| 20220134677 | BAG-SEALING APPARATUS AND METHOD - Bag-sealing apparatus is provided for heat-sealing a bag. The apparatus has a heater arrangement operable to apply heat to heat-seal an open end of the bag. A bag detector detects the location of the bag relative to the heater arrangement. The heater arrangement is formed of plural heater portions. The heater arrangement is operable such that only the or each heater portion that overlies the bag as detected by the bag detector is caused to operate to apply heat to the bag. | 05-05-2022 |
