Abstract: An apparatus fixedly attaching transformer to a rotary drum is provided with a pressing means.

Abstract: Methods are provided for the design of backing dies utilized with front, decorative embossing dies for the simultaneous production and embossing of wood composite panels. The methods apply where more than one decorative pattern is embossed onto the wood composite panels during a single press cycle. The cross-sectional area or volume of the panels impressed with each different decorative pattern forms the basis for the methods of the design. Included are methods of forming wood composite panels using dies made according to the disclosed die design methods.

Abstract: A method for applying a decal or graphic design to a foam substrate is provided. A decal or graphic design comprising polyethylene is provided on a web of carrier paper that is collected on a spool. The web is drawn through a hot stamp press equipped with a crowned silicone head that is heated to about 375.degree. F. The head presses the web to the substrate with a pressure of about 20 psi and a dwell of about 7 seconds, after which the web is removed from the substrate and is automatically advanced to the proper position for the next decal or graphic design to be applied.

Abstract: A lid is sealed to an integrated circuit package by a method that uses a spring biased pressure foot that is structurally carried by a secondary loading jig to impose sealant curing load on the lid. The pressure foot is retracted against the spring bias while secondary jig index pins are meshed with corresponding sockets in the fabrication boat that are aligned with the package position on the boat. When the pins and sockets are meshed, the pressure foot is released to apply optimal assembly force at the package center normal of the package lid plane.

Abstract: A method of sealing a peelable lid (7) to a package is disclosed. The package contains a base (1) and a potentially rupturable flexible web (5) of plastics material covering the base (1) which together define a sealed space therebetween. The lid (7) is in turn sealed above the flexible web (5). The method comprises the steps of: 1) placing a lid (7) over a thin flexible web (5); 2) sealing the lid (7) to the thin flexible web (5) over the base (1) with a strip like seal (13) which extends around the perimeter of the space so the lid (7) will be sealed at the same region as the thin flexible web (5) is sealed to the base (1). The sealing is achieved by a thermosealing process which provides a temperature gradient across the width provides the seal (13) with a peelable adhesion gradient across its width so that when the lid (7) is stripped from the package, it will be unlikely to rupture the thin flexible web (5). A package made by the method is also disclosed.

Abstract: An apparatus for welding a reinforcing member to a bag-like device or contraceptive device is disclosed. The apparatus includes at least one hollow mandrel. The hollow mandrel has an outer surface with an annular groove for holding the reinforcing member. The apparatus has a means for applying a closed end of the bag-like device into the hollow mandrel and an open end of the bag-like device over the hollow mandrel at the outer surface with the annular groove for welding holding the reinforcing member. The apparatus also includes a welding device for the reinforcing member to the bag-like device. A method for welding the reinforcing member to a bag-like device is also disclosed.

Abstract: There is provided a thermal transfer type emblem made of thermoplastic synthetic resin comprising three-dimensional design elements made of a flexible thermoplastic synthetic resin sheet as well as a method of manufacturing the same. Design elements formed with a design printed in color on the surface are bonded to the underside of a carrier film and a hot-melt type film is bonded to the lower surface of each of said design elements. If necessary, a synthetic resin adhesive layer is provided therebetween and said hot-melt type film may be bonded to a sheet of releasing paper at the underside. By appropriately selecting materials for the hot-melt type film and the synthetic resin adhesive layer, the flexible and three-dimensional emblem can be so made as to firmly adhere to an object by simply pressing the emblem with an iron regardless of the material of the object.

Abstract: An apparatus for forming reinforcing structural rebar comprising a core of a thermosetting resin containing reinforcing material and an outer of sheet molding compound is provided. The apparatus comprises layer reinforcing material supply, a thermosetting resin supply means, a shaping die, means for impregnating the reinforcing material the reinforcing material with resin, means for pulling the reinforcing material through the shaping die to form the core of the thermosetting resin containing reinforcing material, sheet molding compound supply, guide means for guiding the sheet molding compound onto the core, and mold means for molding the outer layer of sheet molding compound onto the core.

Abstract: An apparatus for heat-sealing thermoplastic materials includes a sealing jaw with a groove in which a thermal strip is mechanically anchored. The flange portions of the jaw projecting on either side of the groove are compressed towards one another and toward the thermal strip to thereby anchor the thermal strip within the groove. The sealing jaw is manufactured from aluminum which has been surface anodized to create an electrically insulating layer between the body of the jaw and the thermal strip.

Abstract: A tube restoring apparatus includes a tube insertion passage through which a connected flexible tube having a deformed cross-sectional portion at a joint portion thereof can be passed, at least a pair of press members defining at least a part of the tube insertion passage and formed with press surfaces for pinching the deformed cross-sectional portion of the flexible tube therebetween, and driving mechanism for moving the press surfaces at least in opposite directions relative to each other under the condition that the deformed cross-sectional portion is pressed between the press surfaces.

Abstract: A head for the application of composite bands, of the type which has a compacting group which incorporates rollers intended to press on a composite band to make it conform to the corresponding piece, the head having a pair of rollers (12.1) and (12.2) mounted in diametrical opposition on a gyratory support, each roller (12.1) or (12.2) being formed by a multiplicity of identical pieces (2.4) which are maintained in position by tubular pipes (12.5) from which a pressurized fluid flows.

Abstract: A machine (34) for use in assembling a stringer (32) from two C-shaped charges (22), each channel charge being draped about a mandrel (20), is disclosed. The machine includes a framework (36) having a first platform (40) for supporting the mandrels and C-shaped charges such that the C-shaped charges are back to back. A U-shaped anvil (48), connected to the framework, is rotatable between an engaged position overlying the mandrels and the C-shaped charges, and a disengaged position away from the mandrels and C-shaped charges. The anvil (48) includes a side bladder (58) for compacting the C-shaped charges against one another by pressing the mandrels and C-shaped charges together and against a wall of the anvil opposite to the side bladder, and a top bladder (62) for aligning the mandrels and C-shaped charges by compressing the mandrels and C-shaped charges against the platform.

Abstract: A pog press which utilizes a base and a lid with the lid being movable relative to the base. Mounted within the base is a pog receiving pocket with a pog pocket being mounted within the lid. The pog pocket and the pog receiving chamber are to interconnect when the lid is closed on the base. A sheet material pattern is to be connectable with the pog pocket and when the lid is closed on the base, a cutting blade severs the sheet material pattern with the severed segment to then conform to the shape of the pog pocket. The lid includes a transparent window over the transparent pocket to permit visualization of the interior of the pog receiving chamber when the lid is in the closed position with the base.

Abstract: An apparatus for taping wires of a wire harness includes first and second tape application heads interconnected together and disposed proximate to a wire guiding mechanism. Both of the first and second tape application heads have hollow inner cores which communicate with a source of negative air pressure to draw a vacuum in each tape application head which causes a strip of wire tape to adhere to the outer surfaces of the application heads. One of the application heads is brought into contact with a plurality of wires guided across the head, while the second application head rotates around a common axis shared by the two heads, whereby each of the first and second application heads generally oppose each other and apply the strip of tape to the wires.

Abstract: The present invention relates to an ink jet head manufacturing method including a pressurizing step for forming liquid passages communicating with discharge openings for discharging ink, by pressurizing to bond a base member and a top member together via wall members defining the liquid passages, except for areas where the liquid passages are formed. The present invention further provides an apparatus for carrying out such ink jet head manufacturing method.

Abstract: Two-sided fusible tape is mounted in an effective manner upon the sleeve seam allowance of a garment comprising the steps of placing a jacket arranged inside out upon a heated stationary buck, the jacket being positioned on the buck so that the sleeve seam allowance is properly aligned. An exposed surface of a two-sided fusible strip is placed along the sleeve seam allowance, the other fusible surface being covered with a protective sheet. A vacuum communicating with the buck is drawn to retain the garment in the proper position. A pair of heated heads having pressing surfaces conforming to the shape of the buck are simultaneously driven toward the buck to press the fusible strip against the sleeve seam allowance of the garment, the heat from the buck and the heads activating the fusible. Steam may be ejected from the heads when the fusible employed requires steam for activation. The heads are withdrawn from the buck and the garment is removed in preparation for mounting a shoulder pad to the garment.

Abstract: An apparatus for laminating a layer of polymer plastic film to a precast layer of glass is disclosed. The apparatus comprises a support saddle having a receiving surface that is shaped and dimensioned to support the precast layer of glass. The layer of polymer plastic film is positioned by a holding means in the form of toothed upper and lower opposed collar members in spaced apart relation with respect to the glass. A ram having a hard flexible contact member adapted to intimately contact plastic film is positioned at a distance away from the plastic film. The ram and the saddle are brought towards each other so as to cause the hard flexible contact member to contact the plastic film, which in turn causes the plastic film to contact the preformed layer of glass, such that the hard flexible contact member, the plastic film, the glass and the saddle are in intimate contact seriatim.

Abstract: A method and apparatus are disclosed for affixing a fastener to the garment side of an absorbent article having a profiled shape, especially an absorbent article that is thicker in the center than at the ends. The-method involves placing a fastener with its pressure sensitive adhesive surface adjacent the garment side of the absorbent article, and applying pressure to adhere the pressure sensitive adhesive surface to the garment side of the absorbent article while the absorbent article and the fastener are between a compressible component and an anvil surface. The apparatus comprises a compressible component comprising a surface with a plurality of compressible, resilient elements projecting therefrom in a direction toward an anvil surface.

Abstract: A laminate is made by first forming a substantially closed mold cavity between a pair of mold halves, then injecting a plastified synthetic resin into the cavity under pressure to substantially fill the cavity and at least partially curing the resin in the cavity to form a base body. The mold halves are then separated to leave the partially cured body in one of the mold halves with a face of the body exposed and a deformable sheet is laid over the face of the body in the one mold half. A die having a face conforming at least generally to the shape of the body face is then laid down against the sheet onto the body to press the sheet into intimate contact with the body face and bond the sheet and body together.

Abstract: A gluing palette for use with apparatus for gluing labels to objects, such as bottles or the like. The palette is intended to coact with a rotary gluing roller so as to be coated with glue and then to transfer glue to a label transported by the palette from a label magazine to a transfer device. The transfer device is intended to take the glue-coated label from the palette and press the label against the object concerned. The palette includes a core (18) and a carrier which is fitted to the core and can be readily detached therefrom. The carrier has the form of an elastic, pliable apron element (21) which will mould itself to the configuration of the core (18) and which is provided with at least one outwardly projecting part (23) made of an elastic material. This outwardly projecting part has a shape which corresponds essentially to the shape of the label to be coated with glue.

Abstract: A composite tool handle includes one or more load-bearing jackets surrounding a core of lightweight or reinforcing material. The interface between the core and the jacket is corrugated to increase the flexural strength of the tool handle while minimizing weight. The composite tool handle is manufactured by pultrusion wherein the core having a corrugated outer surface is fed through a pultrusion die tube. Resin coated fibers are channeled into the space between the core and the die tube for compression and heating to form a fiber-resin jacket having an internal surface conforming to the shape of the core for key-lock engagement therewith. The outer surface of the fiber-resin jacket can be formed with a corrugated or other discontinuous surface shape by placing one or more external mold members into the space between the resin coated fibers and the die tube for pultrusion therewith through the die tube, and for separation from the fiber-resin jacket upon exiting the die tube.

Abstract: A pair of heat seal jaws (31, 32) for heat sealing together two heat sealable polymeric surfaces (33, 33'), the jaws (31, 32) including first sealing surfaces (36) which in use cooperate to produce at least one relatively strong heat seal between the said polymeric surfaces (33, 33') and second heat sealing surfaces (37, 38) which in use cooperate to produce at least one relatively weak but substantially hermetic heat seal between the polymeric surfaces, said first and second heat sealing surfaces being disposed relative to each other so that during heat sealing of the polymeric surfaces, polymer in the vicinity of the second heat sealing surfaces can flow away from the relatively weak seal to produce a substantially hermetic seal as the relatively weak seal is being formed.

Abstract: A heat sealing element and related self aligning support jaw, for sealing at least two layers of thermoplastic film is disclosed. It may be used with a vertical form, fill and seal machine for packaging flowable materials, e.g. chocolate fudge, sundae topping, in pouches. The heat sealing element has a spade end which extends from the electrical connection essentially to the edge of the thermoplastic film.

Abstract: A die assembly for holding a bas-relief military decoration to a ribbon while gluing the two together. The die assembly has mating top and bottom halves, and sandwiches both the ribbon and the decoration therewithin. The decoration is placed in a die which conforms to the front, or visible side, so as to hold the same immovably. The die is held in a recess formed in the bottom half. The ribbon is placed in a slide groove located in the top half. Glue is applied to the exposed rear surface of the decoration. The two halves are then pressed together, and the ribbon and decoration are also pressed together, and united. Precise alignment of the decoration and ribbon, and between die assembly upper and lower halves, is provided by cooperating guides formed in the die assembly. A hole is formed in the top half, to accommodate prongs formed in the decoration. This enables retention of these prongs, rather than requiring bending them back or removing them prior to mounting the decoration.

Abstract: Disclosed is a method and apparatus for forming a transdermal drug delivery device from a multilayer web comprised of a backing layer, a drug-containing pressure sensitive adhesive layer, and a release layer or liner in which cutting is progressively achieved along a line coplanar with the axes of a cutting roller and anvil roller counter-rotating in proximity to each other. In one embodiment, cutting is achieved completely through the web about the periphery of the transdermal drug delivery device, while simultaneously achieving a scoring only of the release liner without penetration of the pressure sensitive adhesive layer or backing layer. In an alternate embodiment there are two arrangements of rollers. A first arrangement has a cutting edge for scoring the web. After scoring, the web is passed to a second arrangement for cutting through the web to result in the transdermal drug delivery device.

Abstract: Methods are provided for the design of backing dies utilized with front, decorative embossing dies for the simultaneous production and embossing of wood composite panels. The methods apply where more than one decorative pattern is embossed onto the wood composite panels during a single press cycle. The cross-sectional area or volume of the panels impressed with each different decorative pattern forms the basis for the methods of the design. Included are methods of forming wood composite panels using dies made according to the disclosed die design methods.

Abstract: A device for bonding a thermoplastic tape to a substrate to form a fully consolidated composite. This device has an endless chain associated with a frame so as to rotate in a plane that is perpendicular to a long dimension of the tape, the chain having pivotally connected chain links with each of the links carrying a flexible foot member that extends outwardly from the chain. A selected number of the foot members contact the tape, after the heating thereof, to cause the heated tape to bond to the substrate. The foot members are each a thin band of metal oriented transversely to the chain, with a flexibility and width and length to contact the tape so as to cause the tape to conform to the substrate to achieve consolidation of the tape and the substrate. A biased leaf-type spring within the frame bears against an inner surface of the chain to provide the compliant pressure necessary to bond the tape to the substrate.

Abstract: A padded element of a motor-vehicle seat is made applying a cover onto a padding body by pressing with simultaneous application of steam. The covering fabric is provided on a lower mould with the back side thereof facing upwardly and the padding body is pressed against this back side by an upper mould. The upper mould includes a plurality of cannulae for steam injection, which project downwardly from the upper mould and are introduced through the padding body and have their steam outlet lower ends located inside this body adjacent to the surface thereof.

Abstract: A universal coating machine includes a frame and means for securing either a holding means for a liquid emulsion or a means for supporting and supplying a film. The securing means is operatively connected to the frame. The securing means is rotatable between a first position and second position. The securing means is biased to return to the first position when the emulsion or film is being applied to the screen.

Abstract: A device and method for forming a trim cover assembly for an automotive seat, wherein a top cover layer is stretched and pressed on a lower die by plural upper die elements in the outward direction and symmetrically relative to a central line of the lower die, to thereby place the top cover layer without clearance and slackened area therein, upon the lower die, and then a foam wadding and a wadding cover are fixed to the thus-pressed top cover layer. Thus, the resulting trim cove assembly is formed with a clear-cut or very distinct pattern of recessed grooves thereon.

Abstract: An apparatus for forming trim panels has upper and lower mold sections which perform a laminating and bonding between a substrate and a cover sheet while simultaneously cooperating with one or more folding devices to fold a sheet edge around a substrate rim to bond the sheet edge to the back of the substrate rim. Where prelaminated sheets are used, a brim is formed of the sheet edge and a substrate rim and the brim is first folded, after heating, through an angle of 90.degree. and then through a further angle of 90.degree. to complete the fold.

Abstract: An improved thermocontact welding method and apparatus for producing welded seams joining superposed thermoplastic sheets, and in particular for producing solid seams in polypropylene and other polyolefin sheets. The method includes moving a lower platen for engaging an upper die assembly for applying pressure to interposed thermoplastic sheets at areas thereof between the die surface and the platen while the die surface is at a temperature higher than the melting temperature of the sheets and while thermally isolating other areas of the sheets, and the welded sheets are coerced or ejected from the die surface during disengagement of the platen from the die assembly. A preferred product of the method is a polypropylene album leaf having pockets defined by solid weld seams for containing cards or photographs.

Abstract: Dual lanes of fitment-sealing apparatus, for sealing plastic spout fitments to carton blanks, are integrated in line with conventional form/fill/seal production lines. Each apparatus includes a carton blank supply, an indexing conveyor for advancing the blanks in tube form to a sealing station, a gravity-feed track for supplying fitments to the sealing station through an escapement, a pair of fitment retaining clamps for holding the fitment in registration with a spout hole cut in the carton blank, an anvil which is inserted inside the carton blank, a sealing head which is moved to press the fitment in contact with and to seal it to an extrusion layer on the external side of the carton blank, and a timing control for synchronizing the movements of the parts and advancing the carton blanks through the sealing station to an output thereof. The fitment may also be sealed to the extrusion layer with a hot-melt adhesive applied to the fitment just prior to pressing against the carton blank.

Abstract: Apparatus and method for transfer and application of an offset, heat release decal to an article surface. A thin, supported, silicone membrane is indexed through successive work positions where the membrane is heated, picks up a heated decal and brings the decal into contact with the article surface for printing.

Abstract: A mold used in producing printed wiring board is disclosed. The mold comprises upper dies and lower dies for sandwiching a printed wiring board therebetween, thereby performing drilling, punching or the like, one of said upper dies and lower dies having a press surface which is provided with concave or convex portions for absorbing steps caused by forming a printed wiring circuit on the printed wiring board.

Abstract: Uniting bands in the form of heat-sealable labels which bear encoded information are applied to exposed photographic films to join the films end-to-end. The encoded information is decoded by a reader before the labels are applied to the films to thus ensure that the hot sealing member which is used to apply labels cannot destroy or distort encoded information prior to decoding. Decoded information is used for the application of corresponding information to envelopes for exposed and developed films and for the prints of images of the respective film frames.

Abstract: A transverse seal bar produces triangular air pockets between straight, parallel transverse seals. providing stress supports as well as rigidity to the seal The seal is fail-proof and is applied to plastic or other materials laminated to plastic such as; aluminum, paper or metallized materials. The seal bar is adaptable to commercial bag seal machines or other such commercial sealing machines.

Abstract: An improved thermocontact welding method and apparatus for producing welded seams joining superposed thermoplastic sheets, and in particular for producing solid seams in polypropylene and other polyolefin sheets. The method includes moving a lower platen for engaging an upper die assembly for applying pressure to interposed thermoplastic sheets at areas thereof between the die surface and the platen while the die surface is at a temperature higher than the melting temperature of the sheets and while thermally isolating other areas of the sheets, and the welded sheets are coerced or ejected from the die surface during disengagement of the platen from the die assembly. A preferred product of the method is a polypropylene album leaf having pockets defined by solid weld seams for containing cards or photographs.

Abstract: An apparatus for administering self-adhesive labels is disclosed. In the preferred embodiment, the invention comprises an advance lever, which activates a driving mechanism which rotates two cooperating rolling bars; a wiper bar in cooperation with a deflection bar, which forms a stripping mechanism; and a clear label path. Because of the paucity of parts, the user can view a web at all times. In addition, some parts are transparent, which enhances the user's ability to monitor labels. Because of the sharp edge of the deflection bar, the labels are separated from the base ply and projected forward, while the base ply is pulled back and away from the label. Then, due to the beveled edge of the wiper bar, the labels are applied with a wiping motion, rather than a rotating motion.

Abstract: An apparatus for laminating a layer of polymer plastic film--such as non-oriented polyurethane or polyvinyl butyral laminated with oriented polyethylene teraphthalate--to glass, is taught. A saddle is provided having essentially the same contour as the glass that contacts it during the lamination process; and at least the surface of the saddle has an essentially identical coefficient of heat expansion and contraction as the glass, so that there is no significant slippage of the glass with respect to the saddle as the glass and polymer plastic film are heated and cooled. A segmented saddle may be provided having segments with substantially different coefficient of heat expansion and contraction than that of glass, but by being spatially isolated there is no gross expansion or contraction of the saddle face compared with that of the glass. A compression ram presses against the polymer film to be laminated to the glass. Either or both of the saddle and the ram is heated, usually the saddle.

Abstract: Disclosed herein is an apparatus for press-bonding a tape onto each of side faces of a workpiece. The apparatus basically comprises a tape press-bonding mechanism and a trimming mechanism both displaceable in the directions indicated by the arrows X, Y and Z. The former mechanism includes a pressure roller for press-bonding the tape onto the side faces of the workpiece with recesses defined therein, an actuator for displacing the pressure roller toward each of the side faces, a block member for supporting the pressure roller thereon, and a device for displacing the block member through a desired angle.

Abstract: A pour spout carton for extended shelf life paperboard containers, such as those of the gable top type. A first barrier layer lines the carton interior and and a second lines the carton exterior surface. A dispensing opening is formed, as by die cutting, in a panel of the carton. The two barrier layers span the dispensing opening, except for a concentric dispensing hole through them, with the two barrier layers sonically sealed together along an annular zone radially intermediate the dispensing opening and the dispensing hole. The pour spout carries a flange extending from the edge of the dispensing hole to a location radically beyond the dispensing opening, the flange sonically bonded to the outer barrier layer at three radially spaced, concentric zones. The spout screw cap is of a different polymer than the spout, to prevent bonding between the cap and spout.

Abstract: A movable strap-engaging member is provided for being connected at a first pivot axis to a vibrator arm for accommodating pivot movement of the vibrator arm about the pivot axis while the movable strap-engaging member is pressing a first length of flexible thermoplastic strap against a second length such strap in an elongate strap-receiving path. The movable strap-engaging member is reciprocated generally transversely of the path to effect a friction-fusion weld of the strap lengths. The movable strap-engaging member has a configuration in which first and second centers of mass are spaced apart on a line that passes through the pivot axis and that is oriented generally perpendicular to the path. The product of the square of the distance along the line between the pivot axis and the mass of the first center of mass is substantially equal to the product of the square of the distance along the line between the pivot axis and the mass of the second center of mass.

Abstract: A method and apparatus for automated resistance welding of materials is provided. The material may be thermoplastic material. The material has a layer of a second material adjacent thereto. The second material is a dissimilar material which may be applied as a film or a coating on the first material, or the second material may be a separate layer placed adjacent the first material. A heating element is placed in the interface between overlapping portions of the two pieces of material to be welded together. The layers are directly adjacent to the heating element. The layers can be consolidated onto the heating element if desired. The heating element can be composed of carbon fibers in a polymer matrix. The heating element is supplied with current to generate resistive heating. The heating causes melting of the layers adjacent to and contacting the material. Pressure is applied to the area being welded to fuse the materials together.

Abstract: An improved apparatus is disclosed for attaching a fitment (13) to a web of film (20), including a heat seal tip (32) for piercing a web of film (20), for use in the manufacture of flexible plastic containers. The fitment (13) provides a means of access between the interior of the container and the outside environment.

Abstract: A vacuum cleaner filter bag seal is used to form disposable vacuum cleaner bags by joining two portions of filtration material. The two portions of filtration material are sealed by placing them together and then crimping them so that the layers mechanically interlock. The invention also pertains to a method of providing such a seal.

Abstract: A process of and an apparatus for sealing a thermoplastic resin sheet to a mount such as an aluminum sheet uses seal members such as seal rollers or seal plates each having notches thereon, the notches on the first seal roller being intersecting to the notches on the second seal member, whereby the mount can be sealed to the sheet in a crosshatched pattern.

Abstract: An apparatus is disclosed that engages a lid to a container by the formation of interlocking waves of lid material and container material. The interlocking waves are geometrically aligned relative to the interior of the container so as to maximize the burst strength of the container, and also to minimize the force required to peel the lid from the container. An unheated clamp head of the apparatus is used to clamp the lid structure immediately adjacent a heated seal head used to form the interlocking wave structure about the inside rim of the container, so as to prevent any melted portions of the container or lid from flowing to or toward the outside rim of the container, so as to prevent the formation of similar interlocking waves about the outside rim of the container.

Abstract: A film sealing system and method which utilizes the combined application of pressure and high voltage static charge to achieve a high quality seal between two plastic layers of packaging material.Pressure is applied via a sealing bar 40 to evacuate air from between two film layers to be sealed together. A static charge is then applied via a static probe 30.Relatively high pressure air is admitted to a passage which surrounds the static probe. Such air induction of the static charge has been found to intensify the static charge penetration of the film layers and to consequently produce a higher quality film seal.

Abstract: A pour spout carton for extended shelf life paperboard containers, such as those of the gable top type. A first barrier layer lines the carton interior and a second lines the carton exterior surface. A dispensing opening is formed, as by die cutting, in a panel of the carton. The two barrier layers span the dispensing opening, except for a concentric dispensing hole through them, with the two barrier layers sonically sealed together along an annular zone radially intermediate the dispensing opening and the dispensing hole. The pour spout carries a flange extending from the edge of the dispensing hole to a location radially beyond the dispensing opening, the flange sonically bonded to the outer barrier layer at three radially spaced, concentric zones. The spout screw cap is of a different polymer than the spout, to prevent bonding between the cap and spout.