Abstract: An appliance for sealing elastic hoses with a sleeve, which is plastically deformable and slipped onto the hose, has two jaws which are movable towards and away from each other. One jaw has two straight bars which project towards the other jaw and extend transversely of the sleeve to make two transverse indentations in the sleeve and the hose when the jaws are moving towards each other. The same jaw has a cutting edge which projects towards the other jaw and is directed transversely of the sleeve, the cutting edge making a substantially transverse cutting indication in the sleeve and the hose when the jaws are moving towards each other.

Abstract: A sheet separator is so arranged as to cover both surfaces of an electrode plate, and a heating plate is applied along a to-be-bonded edge of the separator, thereby achieving bonding by thermal welding. The heating plate has a width corresponding to a width of a bonded portion of the separator. Then, by pressing a protrusion of the heating plate or a heating plate for cutting against substantially the central part of the bonded portion, local heat transfer takes place to sublime a resin component, whereby the separator is cut off. Thereupon, the pouch-shaped separator is attached to the electrode plate.

Abstract: An apparatus for manufacturing cleaning pads is provided including a base, a pair of supply plates mounted over the base, a supporting plate protruded from an end of the supply plate, a lifting plate located on both sides of the supporting plate, an ultrasonic horn with a groove formed in a bottom being vertically movable located over the supporting plate and driven by an ultrasonic oscillator, an actuator mounted on both sides of the ultrasonic horn to help the ultrasonic horn separate from the cleaning pad, a moving body located under the supporting plate and being movable along a guide rail, a rotary blade mounted on an upper end of the moving body, an air cylinder for moving the moving body, and an inhaler to draw off broken pieces of the cleaning pad, wherein the actuator includes a case mounted on a side of the ultrasonic horn, a press member being vertically slidable in the case, a bottom of which is movable lower than that of the ultrasonic horn, and a spring located in the case to downwardly compress

Abstract: An apparatus of manufacturing cleaning pads includes a base, a pair of supply plates mounted over the base, which has a supporting plate protruded from an end of the supply plate, a lifting plate located on both side of the supporting plate, a ultrasonic horn with a groove in a bottom being vertically movable, located over the supporting plate and driven by a ultrasonic oscillator, an actuator mounted on both sides of the ultrasonic horn to help the ultrasonic horn separated from the cleaning pad, a moving body located right under the supporting plate and being reciprocally movable along a guide rail, a rotary blade mounted on a upper end of the moving body, an air cylinder to make the moving body reciprocally moved, and an inhaler to draw off a broken pieces of the cleaning pad, wherein the actuator includes a case mounted on a side of the ultrasonic horn, a press member being vertically slidable in the case, a bottom of which is movable lower than that of the ultrasonic horn, and a spring located in the cas

Abstract: A crimper assembly forms end seals in overlapping portions of the sheet of packaging material after being folded about an article. The crimper assembly includes a crimper including a base, an insert that is formed from a resilient material, and a support plate that is formed from a rigid material. The insert has a surface that is adapted to engage and seal overlapping layers of a packaging material. The insert is disposed between the base and the support plate. The support plate is secured to the body to retain and support the insert thereon. The insert and the support plate may be formed as separate pieces or may be secured together as a single piece. To prevent excessive compression of the insert, the insert can have an aperture formed therethrough, and the support plate can have a protrusion formed thereon that extends through the aperture into abutment with the base.

Abstract: A heat sealing/severing device for heat sealing thermoplastic films together. The device includes front and rear opposing jaws that are moveable between an open position and a closed position. The open position defines a zone for inserting the thermoplastic films between the front and rear jaws. In the closed position, the front and rear jaws are proximate each other to compress the thermoplastic films together. The rear jaw includes a resilient portion facing the front jaw. The heating element of the device may have a cross-sectional thickness no less than 0.55 times the cross-sectional thickness of the resilient portion. A front jaw release sheet (e.g., an unreinforced fluoroplastic) may be positioned between the insertion zone and the heating element. The front jaw release sheet may engage the heating element when the front and rear jaws are in the closed position and disengage from the heating element when the front and rear jaws are in the open position.

Abstract: A film treatment device has a cutting device (2) for cutting a plastic film web (F). The cutting device (2) has an elongated electric resistor (5) fastened by both ends with fastening elements (3, 4), against which resistor the film web can be pressed and cut via heating of the electric resistor. The cutting device (2) also has a supporting element (6) arranged to support the electric resistor laterally substantially over the entire length of the electric resistor between the fastening elements (3, 4).

Abstract: An apparatus, device (10) and method for simultaneously producing tack-seals (28, 34) and for cutting a zipper (12) from a continuous length of zipper before the zipper is attached to the thermoplastic film (38) used to make a reclosable bag. A first end section (26) of the zipper (12) is cut and fused by a heated blade (24) of the device (10), thereby providing a first tack-seal (28). The zipper (12) is advanced and a second end section (32) is cut and fused by the heated blade (24) of the device (10), thereby providing a second-tack seal (34) so that the zipper includes a pair of tack-seals at both ends of the zipper.

Abstract: A heat sealing jaw assembly for effecting a heat seal of at least two juxtaposed heat sealable sheet materials is described. Preferably, but not exclusively, the heat sealing jaw assembly is adapted for use in a form, fill and seal machine forming thermoplastic bags. The heat sealing jaw assembly comprises a first and a second metal jaw member, each having a heating element for heating the jaw members. Each of the jaw members has an end face disposed in facial alignment with one another. A ribbon member is secured to each of the end faces and disposed in planar alignment with one another. The ribbon member is made of soft material having rubber-like properties and capable of conducting heat from the sealing jaw to a fusing temperature to melt the heat sealable sheet materials.

Abstract: A method for simultaneously sealing and creating a thermal perforation between two thermoplastic layers that comprises providing two thermoplastic layers. A drum is provided that has at least one sealbar and perforation assembly. The two thermoplastic layers are contacted to the sealbar and perforation assembly. The thermoplastic layers are sealed with two generally opposing parallel seals and simultaneously create a thermal perforation in the thermoplastic layers generally parallel to the opposing seals. The thermal perforation is located between the two opposing seals.

Abstract: According to the present invention there is provided an anvil assembly adapted for selective cooperation with a horn operatively connected to an ultrasonic wave generator such as to enable a textile workpiece disposed between the horn and the anvil assembly to be cut with the cut and simultaneously sealed. The anvil assembly comprises an anvil and a cradle, the anvil adapted to be selectively mounted onto the cradle in any one of at least two mounting positions, wherein corresponding to each mounting position the anvil comprises one peaked longitudinal cutting edge and a corresponding engagement section parallel to a longitudinal axis of the anvil. The corresponding positioning and engagement section is adapted for selective engagement for removably positioning and locked onto the cradle.

Abstract: An electric heat sealer for sealing workpieces such as plastic bags or the like includes a casing defining a battery chamber, a press bar pivotally connected to the casing, a sealing mechanism supported on a compression spring in a spring holder inside the casing, and a safety device. The sealing mechanism is electrically connected to produce heat for sealing the workpiece being put thereon when the press bar pressed against the sealing mechanism. The safety device breaks the electrical circuit when the apparatus is not in use.

Abstract: A coupled portion of mutual laminate films sufficiently contributes to the formation of a packaging bag, and the coupled portion itself has excellent airtightness and liquid tightness, and a tensile strength required for the laminate film is given to the coupled portion, whereby a temporary stop of a packaging apparatus is useless when a connecting portion of the laminate film is passed through the apparatus and the operation efficiency and efficiency are enhanced and the yield of the material is improved, wherein oriented base film layers (3, 4) are joined in a mitre form at the coupled portion between a rear end portion and a front end portion of laminate films (1, 2) comprising oriented base film layers (3, 4) and sealant layers (5, 6).

Abstract: A procedure for the covering of editorial items foresees at least the following steps: the positioning of an editorial object (10) to be covered, on a thermoplastic film (11), fitted with folds (12, 13, 31, 32) on its sides, so that the editorial object (10), open on the folded film indicated, has the sides (14, 15) of its cover tucked within the folds (12, 13, 31, 32); to bring the editorial object (10) in contact with the head weld (30) of the film so that it is in a suitable position for the cutting of the excess film and for the welds required to trim the sides of the editorial object (10), where the cutting and trimming operations are carried out through the use of a lever (17, 22, 24), fitted with hot resistances (18, 23, 25). The invention comprise also a device (110) for the covering of editorial objects.

Abstract: A laser strikes and aseptically heats or sterilizes the end of two flexible tube ends for connection. Tube holders are pushed toward each other to bring the tube ends into contact. A weld detector checks the characteristics of the weld. A laser optics assembly may be used to change the direction of the laser and focus the laser at the tube ends. In addition, a crimping device is used to compress a single flexible tube for disconnection. The laser strikes the compressed area. The crimping device continues to pinch the area and forms a seal in the tube. The tube is separated into two tube segments, each segment has a sealed end.

Abstract: A process and apparatus for making a three-dimensional garment. The process is carried out by loading an insert onto an expandable/retractable process loop fixture. A waist elastic member can be bonded to a waist area of the insert. A garment shell can be applied over the insert and the waist elastic member. A waist area of the garment shell can be attached to the waist elastic member and to the waist area of the insert.

Abstract: The present invention is generally directed to a process for hot embossing a base sheet and/or to a process for perforating and bonding multiple plies of a paper product together. The process can be used in order to apply a decorative pattern to a paper product and/or to bond multiple ply products together. In one embodiment, the process of the present invention includes feeding a previously formed single ply or multi-ply base sheet through a heated embossing nip. As the base sheet passes through the heated embossing nip, sufficient heat and pressure is imparted to cause the fibers within the sheet to begin to melt or glassinate. Upon cooling, inter-fiber bonding occurs resulting in a well-defined embossment as well as bonding between plies of a multi-ply product.

Abstract: The invention relates to a method and a device for interlocking stackwise plastic bags, especially bags for automatic machines, by welding, wherein welding is effected by an interlocking device (21) integrated into the grip hand (17) of a robot (16) with the purpose of simplifying welding.

Abstract: This invention provides an apparatus for attaching a cutting strip to a carton blank. The apparatus includes a first member for conveying carton blanks past a second member, and the second member is arranged to cut a cuffing strip from a supply of cuffing strip material and deposit the cutting strip upon a carton blank. The first member may be a conveyor belt fitted with a suction member, and the second member may be upper and lower dies that are movable relative to one another and a member that can feed a supply of cutting strip material between the dies. Initial downward movement of the upper die cuts a cutting strip from the supply of cutting strip material and the cutting strip is retained on the upper die. Further downward movement of the upper die brings the cutting strip into contact with a carton blank. The apparatus may also include an alignment member to ensure that the carton blanks are properly positioned relative to the second member when the cutting strips are attached.

Abstract: A punch die for punching and laminating simultaneously a plural number of thin sheets is disclosed. This punch die 10 comprises: a punch 10 being provided on a upper portion of a die, a die 12 being provided on a lower portion of a die and used for punching a material to be processed, a stripper 11 for guiding the punch 10 during punching operation, a device for laminating punched materials using the punch 10 as a laminating axis, a device for adjusting a relative position between the punch 10 and the stripper 11 when the upper and the lower portions are separated, and a device for adjusting a clearance between the die 12 and the stripper 11 during punching operation. The punch die can open precisely almost straight very finer through-holes of a diameter of 100 &mgr;m or less even in a sheet of thin, soft and deformable material.

Abstract: A rotatable cutting wheel is used to heat a polymer substrate as it is being cut. The cutting wheel has a heater and a thermocouple associated therewith, which are used to heat and control the temperature of the cutting wheel. The heat softens the substrate, making it easier to cut and reducing distortion caused by cutting. A cleaner cut also makes it more likely that polymer will be retained on reinforcement when the substrate is a reinforced polymer. A method of the invention comprises the steps of heating the cutting wheel and traversing the substrate with the heated cutting wheel.

Abstract: A web including a fibrous material and superabsorbent material is fed to a station. The web has a first surface, a second surface, a first side edge and a second side edge. At the station, the operation of applying a superabsorbent material movement obstruction agent and cutting the web into individual absorbent members having a pair of opposing cut ends are carried out simultaneously.

Abstract: The invention relates to an ultrasonic welding apparatus (100) for welding together at least two superposed sheets (1, 2) made of plastics material and traveling continuously along a predetermined path (F), the apparatus (100) being of the type comprising a sonotrode (101) and an anvil (102) disposed facing each other so that their facing surfaces (101′, 102′) define a through gap (102) through which two superposed sheets (1, 2) to be welded together pass, the gap having an inlet section (104) and an outlet section (105), the sonotrode (101) vibrating at high frequencies to emit ultrasound waves. According to the invention, the anvil is fixed and said facing surfaces of the sonotrode and of the anvil are generally plane and converge towards each other such that the section of said through gap decreases continuously between its inlet section and its outlet section.

Abstract: An individually wrapped absorbent article such as a sanitary napkin which is simple, compact, sanitary, and easy to unwrap for use and to dispose of after use. The absorbent article avoids the need for a separate peel strip and pouch because it is provided with a wrapper that can be folded into a pouch. Substantially the entire backsheet of the absorbent article directly faces the wrapper and is secured to it to form an assembly. In the case of a winged or tabbed type absorbent article, this configuration obviates the need for a separate peel strip to cover the garment adhesive located on the wings or tabs. The assembly is wrapped by folding the lateral flaps thereof longitudinally over one another to enclose the article to prevent the garment adhesive from becoming contaminated. The package is then tri-folded laterally to form an e-shaped pouch. Wrapping and folding can be performed by an in-line process that uses simple equipment and that does not require reversal in the direction of article conveyance.

Abstract: A method for forming an apertured web which may be used as a topsheet on a disposable absorbent article, such as a diaper. The web (240) is fed in as machine direction through a first nip (250) formed by a pair of rollers one of the rollers having a smooth outer surface and the other roller having an outer surface with a plurality of projections extending from it's outer surface. At least one of the rollers of the first nip (250) is heated. The first nip (250) apertures the web with a plurality of apertures each having a fused perimeter. The web (240) is then cooled to solidify the fused perimeter of the apertures. The web (240) is then fed through a second nip (280) formed by a pair of rollers to break the solidified fused perimeter of the apertures. One of the rollers of the second nip (280) has an outer surface with a plurality of grooves.

Abstract: An apparatus and method for heating and cooling a polymer structure employs a tube structure. The tube structure includes a conductive tube and a conductive strip. The tube is composed of a first conductive material having a first electrical resistivity, and the strip is composed of a second conductive material having a second electrical resistivity less than the first resistivity. The strip is connected to only a portion of an outer surface of the tube and extends along a length of the tube. In the method, an impulse of electric current is passed through the tube structure until the strip is heated to a predetermined sealing temperature. The strip and the polymer structure are brought into contact with each other for a dwell time sufficient to generate a heat seal in the polymer structure. A cooling medium is passed through the tube to cool the strip to a predetermined release temperature that facilitates release of the strip from the polymer structure.

Abstract: An apparatus for applying strip fastener elements or zippers to web material includes an unwind stand holding a roll of film material, an infeed dancer arrangement of rollers, a zipper apparatus which conditions zipper material, cuts zippers and delivers zippers to a zipper feed apparatus. The zipper feed apparatus loads zippers into a sealing platen of a rotating turret. The rotating turret carries the zippers successively to a position adjacent a surface of the film and a seal bar presses the film to successive zippers to seal the zippers thereto while a new zipper is being received in a sealing platen of the turret at a loading station at a rotational position at a distance from the sealing station. The film with zippers attached is drawn downstream of the turret to a rewind dancer roll assembly and thereafter to a rewind stand for winding into a roll of zippered film.

Abstract: A method (100) of constructing a flexible object (20) formed of a plurality of mutually conjoined layers (22) is disclosed. A first outer layer (28), four intermediate layers (36), and a second outer layer (38) of substantially a fusible polyester sheet material woven of microfibers are obtained (110,124,130). The first outer layer (28) is positioned (144) over a work surface (24), the four intermediate layers (36) are positioned (148) over the first outer layer (28), and the second outer layer (38) is positioned (150) over the first outer layer (28) and intermediate layers (36). A laser cutting head (26) is configured (158) to be fusional for all of layers (28,36,38). A periphery (50) of the object (20) is then cut (164) through each of the layers (22) by substantially simultaneously moving the laser cutting head (26) relative to the layers (22), and coincidentally fusing (166) the peripheries (50) to form the object (20).

Abstract: A system and method for cutting and heat sealing polypropylene film and/or other separator material around individually shaped cathode, anode or other active components, for use in a battery or capacitor and/or other implantable medical device.

Abstract: A rotary mechanism for cutting and/or sealing a web has a pair of counter-rotating rotors mounted on parallel axes and having radially projecting arms between which the web is momentarily gripped for cutting and/or sealing. Sealing is performed by heated pressure outer faces on the rotor arms. Cutting is performed by cutter and anvil bars on the opposed arms engaging the web. Bearer faces on the arms beyond the pressure faces set a gap between the pressure faces and a rectangular-section tongue and groove in mating contact faces one side of the pressure faces locate the pressure faces laterally. The cutting means are adjusted by a wedge bar bearing on the inner face of the cutter bar or anvil. The wedge bar is movable in the direction of rotation and has an outer face inclined in the same direction. Means accessible from the leading and/or trailing faces of the rotor arms are provided for adjusting the wedge bar and clamping the cutter and anvil bars.

Abstract: A method for simultaneously sealing and creating a thermal perforation between two thermoplastic layers that comprises providing two thermoplastic layers. A drum is provided that has at least one sealbar and perforation assembly. The two thermoplastic layers are contacted to the sealbar and perforation assembly. The thermoplastic layers are sealed with two generally opposing parallel seals and simultaneously create a thermal perforation in the thermoplastic layers generally parallel to the opposing seals. The thermal perforation is located between the two opposing seals.

Abstract: A sheet-like separator is so arranged as to cover both surfaces of an electrode plate, and a heating plate is applied along a to-be-bonded edge of the separator, thereby achieving bonding by thermal welding. The heating plate has a width corresponding to a width of a bonded portion of the separator. Then, by pressing a protrusion of the heating plate or a heating plate for cutting against substantially the central part of the bonded portion, local heat transfer takes place to sublime a resin component, whereby the separator is cut off. Thereupon, the pouch-shaped separator is attached to the electrode plate.

Abstract: A heat sealing jaw assembly for effecting a heat seal of at least two juxtaposed heat sealable sheet materials is described. Preferably, but not exclusively, the heat sealing jaw assembly is adapted for use in a form, fill and seal machine forming thermoplastic bags. The heat sealing jaw assembly comprises a first and a second metal jaw member, each having a heating element for heating the jaw members. Each of the jaw members has an end face disposed in facial alignment with one another. A ribbon member is secured to each of the end faces and disposed in planar alignment with one another. The ribbon member is made of soft material having rubber-like properties and capable of conducting heat from the sealing jaw to a fusing temperature to melt the heat sealable sheet materials.

Abstract: To provide a heat-sealing apparatus capable of achieving an excellent heat-sealing even when heat-sealing under severe conditions with a fluid, such as when filling/packing a vegetable juice abundant in water-insoluble vegetable fiber. The high-frequency heat-sealing apparatus is comprised of an openable-and-closable sealing jaw 23 and opposing jaw 25 which transversely heat-seals a tubular packing material with a fluid, wherein a ridge 31 shaped to contain a partial curve is so formed on the action face of a high-frequency coil 22 flush with the action face of the sealing jaw that it can press the central portion of a sealed zone having two rounded and narrowed right and left sides, a groove 34 which forms a molten thermoplastic resin puddle is formed on the action face adjacent to the outer side on the container's interior side of a sealed zone, and in addition, a flash portion 33 for a molten resin is formed adjacent to the outer side on the cutting side of a high-frequency coil.

Abstract: The present invention provides a method and apparatus for producing individual folded labels from a ribbon of labels designed to satisfy the aforementioned needs. The label is formed by first providing a ribbon of labels with at least one folded over portion and then subjecting the folded ribbon to heat and pressure to set the fold. The folded pressed ribbon is then subdividing into individual labels. In an alternative embodiment, the folded and pressed ribbon can be rerolled and shipped to an end user for use in an auto-sewing device. The present invention further includes an apparatus for carrying out this method and a finished label.

Abstract: A filter cartridge made of an accordion fold pack folded in a zigzag-shaped manner and made of a thermoplastically moldable and heat-sealable material, whose folds are held at an adjusted, defined distance relative to each other, in particular made of a nonwoven fabric. The longitudinal direction of the accordion fold pack, transversely to the folds, the individual fold peaks are folded over in the same direction in at least one strip on one or both sides of the accordion fold pack and in each case fixedly joined to the next following, likewise turned-down fold at least in the overlapping region, by heat-sealing.

Abstract: A method is disclosed of making a component consisting of a substantially cylindrical support through which there is a substantially coaxial orifice and a membrane welded to one end of the cylinder substantially perpendicularly to a longitudinal axis of the support. A substantially plane membrane is welded to one end of a support substantially perpendicularly to a longitudinal axis of the support and, after cooling, the support is torn off the membrane in a direction substantially perpendicular to the plane of the membrane so that a portion of the membrane substantially corresponding to the end of the cylinder remains welded to the support. The method can be applied to making two-part stoppers for straws, in which case the membrane is microporous, hydrophobic, impervious to liquids and permeable to gases and the support is an insert made from a material chosen from an elastomer material, a thermoplastics material and a thermoplastics elastomer material.

Abstract: A laminated stretch cushion strap assembly having a stretchable cover, a stretchable cushion filler and a stretchable bottom or bottom fabric. The cover includes a stretchable top fabric, a first adhesive web layer positioned on one side of the top fabric and a stretchable base layer positioned on the first adhesive layer on a side opposite that of the top fabric. The stretchable bottom fabric forms with the cover an enclosure. The stretchable cushion filler is adapted to be completely enclosed within the enclosure. The stretchable cushion filler has a first cushion layer, and adhesive for securing during lamination the cover to the stretchable cushion filler, and the cushion filler to the stretchable bottom fabric. The adhesive is a second adhesive web layer positioned between the stretchable base layer and the first cushion layer to secure the cushion filler to the cover, and a third adhesive web layer positioned on the first cushion layer to secure the bottom fabric to the cushion filler.

Abstract: A method for attaching fabric to a structural part. The structural part is at least partially surrounded by fabric at least on one side. The structural part, which is provided with holes, is surrounded by the fabric at least in the region of the holes on both hole-opening sides. Fabric pieces on one side are inserted through the holes and are connected to the fabric of the other side in the region of the hole openings by bonding or welding.

Abstract: The invention solves in a new manner the known problems of making packages in the form of a continuous tube completely and reliably tight though a method, which is mainly distinguish by the tube being pressed together at the constricting positions into a string and that the string along plural lines are subjected to high and preferably pulsating pressure of such a magnitude that the material becomes adhering. The lines may be traversal with respect to the tube ot crossing each other so as to form a checked pattern. The pulsation in pressure is suitably obtained through ultrasound. The invention concerns a device as well as a sealing method.

Abstract: An ultrasonic seam welding apparatus for seam welding at least two sheetlike work pieces piled one above the other by imparting ultrasonic osculation is expressed through the ultrasonic binding and cutting quill assembly. The ultrasound seaming and cutting apparatus comprises a receptive resonant horn or wheel for receiving a rotating anvil wheel and a cutting surface thereon. An apparatus and receiving component having overlapping surfaces and welding the components together with the use of ultrasound. An ultrasound emitter and wheel receives the high frequency current and converts it into mechanical ultrasonic vibrations having the same frequency.

Abstract: An ultrasonic tool has an air actuated acoustic horn assembly. An electronic and pneumatic controller generates a predetermined air pressure within the tool. The horn assembly is coupled to the controller for applying a desired actuation force to a part based on the predetermined air pressure. The predetermined air pressure therefore corresponds to the desired actuation force. The horn assembly also transmits mechanical vibrations to the part at a predetermined frequency. The tool further includes an acoustic control system coupled to the horn assembly for transferring a high frequency electrical voltage to the horn assembly. Selectively applying the desired actuation force to the part based on air pressure allows a wider range of forces to be applied, and eliminates problems associated with part damage and marking.

Abstract: An apparatus for longitudinally welding and severing superposed thermoplastic films forming a packaging hose includes first and second feed rollers each having an outer periphery contacting one another for advancing the films passing therebetween; a drive for rotating at least one of the feed rollers; a circular heating disk mounted in the first feed roller coaxially therewith and having an outer diameter greater than the peripheral diameter of the first feed roller; and a circumferential groove provided in the second feed roller in alignment with the heating disk. Peripheral portions of the heating disk project into the circumferential groove of the second feed roller.

Abstract: A method for cutting and edge sealing cells of cellular retroreflective sheeting is disclosed using a specially designed apparatus and tool. Sheeting having a thickness T is heated to a thermoforming temperature to form a heated sheeting. Pressing the unheated tool, the heated sheeting, and a substrate together results in cutting and edge sealing of the heated sheeting. The tool has a radiused ridge for cutting and edge sealing with the shape of the ridge similar to the shape desired for the edge seal. A height H of the ridge is defined relative to the thickness of the sheeting. The fraction of the ridge height to the thickness of the sheeting is less than one and more than 0.2. The tools may be mounted on a perimeter of a wheel for continuously slitting and edge sealing strips of cellular sheeting. The retroreflectivity of the sheeting is maximized by (1) minimizing the width of the sealed edges while (2) maximizing the number of closed cells along the sealed edges that can withstand a water holdout test.

Abstract: A reinforcing hole punch including a reciprocating punch member supported for movement toward a base is disclosed. The reciprocating punch member is actuated to form a hole within a sheet of paper positioned on the base. The hole punch also includes a dispensing sleeve positioned about the punch member, defining a space between an inner wall of the dispensing sleeve and the punch member, in which reinforcing members are positioned for attachment to a sheet of paper when the punch member is actuated to form a hole within a sheet of paper.

Abstract: The invention consists in an apparatus for sealing tubular or bag-shaped packing casings, comprising tools such as crimping shears for crimping the packaging casing as well as a punch (10) and a die (12) for setting and closing closure clips (46), where the movement of one or several tools is predetermined by at least one cam track on which a scanning roller (22; 32) is rolling, and which is characterized in that it additionally comprises a guide roller, which rolls on a separate guideway on the cam plate and by means of an elastic element (61) urges the scanning roller (32) against the cam track with a bias due to an elastic deformation of the elastic element (61).

Abstract: A fibrous work piece, e.g. a glass fiber mat or blanket, is simultaneously cut, sealed and encapsulated using a focused, high energy liquid jet containing a sealant. The sealant in the focused, high energy liquid jet is deposited on and seals the edges of the kerf formed by the cutting operation to encapsulate dust and short length fibers formed by the cutting of the fibrous work piece. The focused, high energy liquid jet is emitted from a nozzle and the sealant is introduced into and mixed with the liquid before the liquid exits the nozzle. Portions of the fibrous work piece can be compressed by hold down shoes or by one or more high pressure air streams directed onto the work piece adjacent where the work piece is being cut to facilitate the formation of a cleaner edge on the kerf being cut in the fibrous work piece.

Abstract: An apparatus and method for assembly of speaker covers which provides for attaching fabric to a speaker cover frame. The fabric and frame are placed into the apparatus. The apparatus first positions the fabric and frame in a secure manner and tensions the fabric against the frame. The fabric is folded about the frame to position the fabric for attachment to the rear of the frame. A heat welding device then bonds the fabric to the frame and simultaneously trims off any excess fabric.

Abstract: A heat seal splice assembly for heat splicing first and second webs together, with each web alternately constituting a running web moving in first direction and a new web to be spliced to the running web upon depletion of the running web from a roll, includes a central guide having first and second sides, with the first web being located to the first side of the central guide and the second web being located to the second side of the central guide, the central guide having a hold down assembly for holding the new web to the central guide, a rotation assembly for rotating the central guide such that the new web held to one side of the central guide can be positioned to an opposite side of the central guide at which the running web is positioned, a clamping assembly for clamping the first and second webs together, a first heat seal assembly movable toward and away from the first side of the central guide to heat seal the first and second webs together against the first side of the central guide when the first a

Abstract: A transverse sealing device in a tubular bag forming machine that has two sealing jaws with flat sealing faces disposed in an interstice between two pairs of clamping jaws, and also has a severing knife for longitudinally dividing the crosswise seam made by the sealing jaws. In order to remove the severing knife from the thermal influence of the sealing jaws, the severing knife is disposed and is movable separately from the sealing jaws and in a position of repose is located outside the range of motion of the sealing jaws. To that end, an aperture is provided in one of the clamping jaws for receiving the severing knife in the position of repose, and an arm supports the severing knife and also protrudes through the aperture.