Abstract: A method of forming or debossing a permanent identification mark or indicia onto a plastic material, such as a housing of an appliance, which becomes soft or melts when heated to a predetermined temperature, comprises applying a label having an adhesive on one side to the substrate or housing with the adhesive side in contact with the substrate or housing. The label, including the adhesive, also becomes soft, melts, or disintegrates when heated to the predetermined temperature. Then, predetermined portions of the label, which portions form the outline of the permanent mark or indicia, is heated to at least the predetermined temperature. The portions of the substrate or housing corresponding to the predetermined label portions are also heated to the predetermined temperature and melted away to a predetermined depth, leaving a permanent mark or indicia on the substrate or housing, even if the label is forcibly removed.

Abstract: An improved method and apparatus is provided for continuously embossing a precision pattern of micro-prismatic elements on a surface of a resinous sheeting material with the aid of an endless metal embossing belt. The method includes the steps of moving the belt along a closed path through a heating station and a cooling station, conveying superimposed resinous film and sheeting material into proximity with the belt, passing the film and sheeting between the belt and a series of sonic welding heads to thereby begin to impress a pattern of micro-prismatic formations of the belt into one surface of the sheeting, pressing the film and sheeting against the heated belt until the one surface of the sheeting fully conforms to the embossing pattern, and stripping the film and embossed sheeting from the belt.

Abstract: An embossing and laminating machine is described which comprises a first embossing cylinder (3) with a surface provided with a first set of protuberances (P3) disposed with a first pitch in a first direction (Lx3) of alignment and with a second pitch in a second direction (Ly3) of alignment, the said first and the said second direction of alignment forming between them an angle (&agr;) other then zero; a second embossing cylinder (5), with its axis (A5) parallel to the axis (A3) of the first embossing cylinder (3), and with a surface provided with a second set of protuberances (P5) disposed with the said first pitch in a third direction (Lx5) of alignment and with the said second pitch in a fourth direction (Ly5) of alignment; and a first and a second pressure roller (7, 9) interacting with the said first and the said second embossing cylinder (3, 5) respectively.

Abstract: An improved method and apparatus is provided for continuously embossing a precision pattern of micro-prismatic elements on a surface of a resinous sheeting material with the aid of an endless metal embossing belt. The method includes the steps of moving the belt along a closed path through a heating station and a cooling station, conveying superimposed resinous film and sheeting material into proximity with the belt, passing the film and sheeting between the belt and a series of sonic welding heads to thereby begin to impress a pattern of micro-prismatic formations of the belt into one surface of the sheeting, pressing the film and sheeting against the heated belt until the one surface of the sheeting fully conforms to the embossing pattern, and stripping the film and embossed sheeting from the belt.

Abstract: Business forms with pressure activated adhesive or cohesive are handled by a sealing apparatus which has a reduced weight, foot print of equipment, and lower cost to the end user, because of its simple construction. First, second and third rollers are provided which have axes of rotation that are vertically spaced from each other and are preferably substantially vertically aligned, with the second roller between the first and third rollers. The forms pass through a first nip between the first and second rollers, are re-directed, and then pass through the second nip between the second and third rollers. Preferably forms pass through both nips at the same time to maximize the pressure in both nips. Typically, when passing through each of the nips the rollers exert a force of between about 100-200 pounds per lineal inch. Preferably all of the rollers are driven, such as by a motor connected to the second roller, and with gears acting between the second roller and the first and third rollers.

Abstract: A welding method controls the welding temperature, welding cycle time, and welding pressure for fabrication of composite structural parts. A welding unit welds multiple plies of thermoplastic prepreg into welded multi-ply assemblies by concentrating welds along the thermoplastic prepreg plies at localized and strategic positions. Two platens weld a plurality of the multi-ply assemblies into a layup using a plurality of heated pins. The heated pins are hollow to reduce surface heating during welding and are non-uniformly shaped to allow indexing of the layup. After the layup is cut into a plurality of thermoplastic prepreg segments along a layup pattern, the thermoplastic prepreg segments are indexed according to the weld marks impressed by the non-uniformly shaped heated pins. The thermoplastic prepreg segments are formed into kits or wedges by stacking smaller thermoplastic prepreg segments on top of larger thermoplastic prepreg segments.

Abstract: A mailer form adapted to be advanced through a folder-sealer apparatus having a first roller and a second roller, with the second roller having a number of sealing projections extending therefrom, includes a first edge portion having a first number of pressure sensitive adhesive patches disposed thereon. The form also includes a second edge portion having a second number of pressure sensitive adhesive patches disposed thereon. The mailer form is configured such that during advancement of the mailer form between the first roller and the second roller (i) the mailer form is folded by the first roller and the second roller such that the first number of pressure sensitive adhesive patches are aligned with the second number of pressure sensitive adhesive patches, and (ii) both the first number of pressure sensitive adhesive patches and the second number of pressure sensitive adhesive patches are aligned with the number of sealing projections of the second roller.

Abstract: Business forms having longitudinal and transverse patterns of pressure activated cohesive requiring a sealing force of at least about 50 lbs. per lineal inch are sealed preferably by a single pass through a nip formed by first and second rollers. The first roller is a larger diameter substantially smooth surfaced roll, while the second roller is a small diameter serrated or ribbed roll, e.g. having serrations or ribs having a dimension substantially parallel to the axis of rotation of about 0.04-0.1 (e.g. about 1/16) inches, with spaces therebetween of between about 0.2-0.1 inches (e.g. between about 1/32-1/16) inches. Preferably the serrations or ribs are oppositely directed angled serrations or ribs on different halves of the second roll, each making an angle of at least about 10.degree. with respect to a plane substantially transverse to the axis of rotation.

Abstract: An apparatus for folding and sealing a sheet having a pressure sensitive adhesive positioned thereon includes a first roller having a number of sealing protrusions which extend therefrom. The apparatus also includes a second roller having a roller surface which is positioned in operative contact with the number of sealing protrusions of the first roller during advancement of the sheet between the first roller and the second roller. The apparatus also includes a biasing lever arm having a first end and a second end. The biasing lever arm is pivotally coupled to the frame member at a pivot location between the first end and the second end. The biasing lever arm is coupled to the first roller at a journal location between said first end of said biasing lever arm and said pivot location.

Abstract: An apparatus for folding and sealing a sheet having a pressure sensitive adhesive positioned thereon includes a first roller. The apparatus also includes a second roller which is positioned in operative contact with the first roller during advancement of the sheet between the first roller and the second roller. The apparatus also includes a third roller having (i) a roller surface, and (ii) a sealing protrusion extending from the roller surface. The apparatus further includes a sheet stop positioned to halt forward movement of the sheet during advancement of the sheet between the first roller and the second roller and subsequently create a buckle in the sheet which is advanced into a roller nip defined by the first roller and the third roller. The sealing protrusion of the third roller is positioned in operative contact with the first roller during advancement of the sheet between the first roller and the third roller.

Abstract: Mounted in a frame is a welding cylinder, which is provided with a rotary drive and welding bars, which are distributed at uniform angular distances over the circumference, run parallel to the axis of rotation, can be adjusted continuously in their radial direction by means of their supports, and can be moved in and out in the radial direction relative to their supports for the purpose of activation and deactivation. For the purpose of identifying the respective welding bar, which has executed a specific weld on a film tube passing through, an embossing die, which provides the welded web with a distinct marking, characterizing the welding bar, which has executed the respective weld, is mounted in the circumferential direction in front of or behind each welding bar.

Abstract: A method of constructing a honeycomb structure generally undetectable by radar. The method includes winding first and second sheets of radar absorbent material onto a central roller. A first printer prints a plurality of parallel adhesive linear deposits on the first sheet of material as it passes across the first printer. A second printer prints a plurality of parallel adhesive linear deposits on the second sheet of material as it passes across the second printer. The first and second linear deposits are offset with respect to each other. The first and second sheet materials overlap one another during winding onto the central roller. Once the first and second sheets are overlapped onto one another, the adhesive deposits secure sheets together to form a non-expanded honeycomb structure. The non-expanded honeycomb structure is removed from the central roller and is expanded to form the expanded honeycomb structure.

Abstract: This invention relates to apparatus and methods for intermittently bonding a substrate web in fabricating a blank subassembly for an absorbent article. The invention comprises ultrasonic bonding apparatus including an anvil roll, a substrate web thereon, and at least one rotary ultrasonic horn. The substrate web can comprise at least first and second layers of material. The rotary ultrasonic horn, in combination with the anvil roll, ultrasonically bonds intermittent segments of the first and second layers of the substrate web to each other. Such intermittent bonds can comprise end seals for the absorbent articles. The ultrasonic horn and anvil roll are periodically separated from each other to provide the intermittent bonding of the substrate web. An actuator apparatus periodically moves the anvil roll and ultrasonic horn from engaging contact with each other preventing bond formation.

Abstract: An embosser can emboss two webs of sheet material with either nested or foot-to-foot embossments. The embosser includes two steel embossing rolls which are engraved with the same embossing pattern. When foot-to-foot embossments are desired, the embossing rolls are positioned so that the corresponding embossments on the two rolls are aligned. When nested embossed are desired, one of the embossing rolls is moved either axially or circumferentially, or both, relative to the other embossing roll so that embossments on the two rolls nest.

Abstract: A method and apparatus for making a graphic product from a layer of sheet material on a carrier sheet uses stored machine readable data describing the periphery of the graphic product to cut and remove the product from the carrier sheet. The apparatus includes a feeding mechanism for feeding the layer of sheet material and a bonding web adjacent a thermal heating head. The thermal heating head has individual heating elements that are selectively energized to heat the bonding web throughout a patterned heat application area which overlies the portion of the sheet material corresponding to the weed or the graphic product designated for removal. The portion of the layer of sheet material secured to the bonding web is then separated from the carrier sheet. The apparatus can also be used to apply an adhesive inhibitor to one portion of the sheet material so that another portion can be removed with a conventional adhesive transfer web.

Abstract: A file folder has a pocket disposed on one of its surfaces. The edges of the pocket and the file folder are in sheared alignment with each other. A method for manufacturing a file folder having a pocket is disclosed. Adhesive is deposited along several edges of a first web of material which is pressed to a second web of material to join the webs together by the adhesive. The combined materials are cut along one of the edges of adhesive to form a sheet having a pocket. The first and second webs have side edges which are in sheared alignment.

Abstract: An embossing and laminating machine is provided comprising a first embossing cylinder with a surface provided with a first set of protuberances and a second embossing cylinder with a surface provided with a second set of protuberances. The two embossing cylinders forming a nip. First and second pressure rollers interact with the first and the second embossing cylinders respectively. The protuberances are constructed in such a way that in the nip some of the protuberances of the first set coincide with some protuberances of the second set while other protuberances of the first set are out of phase with corresponding protuberances of the second set.

Abstract: A separator sheet is formed of a plastic material and has a number of ribs formed on one side thereof. The ribs extend in the direction in which the separator sheet is fed. The sheet is overlaid with a glass mat, and a laminated member obtained thereby is moved into the region between a pair of driving rolls. After being sandwiched by the driving rolls, the laminated member is fed into an envelope apparatus. In an adhesive coating step, a hot melt type adhesive is coated on one side of the glass mat. The adhesive is coated at portions C corresponding to the base sections between the ribs of the sheet, in such a manner that the coated adhesive forms a line extending in the longitudinal direction of the glass mat. In a stacking step, the sheet and the glass mat are stacked one upon the other.

Abstract: Method and apparatus for activating longitudinal and transverse pressure sensitive adhesive strips in marginal edge portions of paper business forms are disclosed in the form of one or more roll sets which are formed to activate both the longitudinal and transverse strips while the form travels in a single orientation in a single direction that is parallel to the grain direction of the paper.

Abstract: A process for the thermomechanical treatment of a fleece web which is comprised of filaments and/or fibers of a thermoplastic synthetic resin in a continuous process. The fleece web is moved during the thermal treatment continuously and with uniform speed. The fleece web passes initially a thermal treatment station and in this is traversed by a gas stream of predetermined gas flow velocity and gas flow temperature and is heated to a preheating temperature. The preheated fleece web is subjected to mechanical treatment. The gas flow temperature and the gas flow velocity on the one hand and the treatment stretch of the fleece web in the thermal treatment station on the other are so selected that the preheating temperature at all speeds which can be assumed by the fleece web, including zero speed, does not exceed the temperature of the melting point of the filaments and/or the fibers. Also apparatus for carrying out the process of the invention are given.

Abstract: A filter and method and apparatus for manufacturing the filter. The filter includes a first filter layer and a second filter layer. The first and second filter layers are joined by a ribbon. The ribbon is attached to the first filter layer and the second filter layer through ultrasonic welding. The apparatus includes fist and second ultrasonic welders for attaching the first filter layer to one end of the ribbon and the second filter layer to the other end of the ribbon.

Abstract: An ultrasonic method for intermittently changing a condition of a workpiece is disclosed. The ultrasonic system includes an ultrasonic horn and a rotating anvil roll positioned to form a close relationship with each other comprising a nip. One of the ultrasonic horn and the rotating anvil roll includes an outer radial surface having a first length having a first amount of surface area per unit length of the respective outer radial surface, and a second length having a lesser amount of surface area per unit length of the respective outer radial surface. When ultrasonic energy is applied to the ultrasonic horn, the second length changes a condition of the workpiece when applied in the nip, but the first length does not change that condition. The change in condition occurs because the decrease in surface area along the second length increases the ultrasonic energy per unit area, as applied in the nip, to at least the threshold amount necessary to change the condition.

Abstract: Two-ply films 23, 24 are sent and heat-fused in a longitudinal direction and a transverse direction on a heat drum-roller 30, furthermore, hollow bubble portions 63 with an air-leading groove 32 and bubble-forming depressions 33, provided on a circumferential surface of the heat drum-roller, and a communicating portion 62 going through sealed portions in the direction transverse to the longitudinal direction to make communication between the bubbles, are formed on the film, in order that each bubble is expanded by feeding into the hollow bubble portion 63 with air, sent from an air-blowing nozzle 40 through the communication portion 62, and then, the communicating portion 62 communicating the expanded bubbles is sealed with a point-seal 50. Therefore, an air cushion sheet 60 having plural independent bubbles 65 which are each formed in a large long type in the transverse direction is easily and certainly produced.

Abstract: This invention relates to apparatus and methods for fabricating a web or consolidating web precursor material in fabricating a web. The invention comprises ultrasonic bonding apparatus including an anvil roll receiving web materials thereon and receiving first and second rotary ultrasonic horns. The rotary ultrasonic horns, in combination with the anvil roll, ultrasonically bond segments of e.g. first and second webs to each other. Third and fourth rotary ultrasonic horns spaced about the circumference of the anvil roll, in combination with the anvil roll, ultrasonically bond other segments of the webs to each other. The full widths of the webs can be ultrasonically bonded using the rotary ultrasonic horns. An outer surface of the anvil roll preferably carries a bonding pattern defining the locations where bonding of the webs occurs. Additional e.g. third and fourth webs can be bonded by the ultrasonic bonding apparatus.

Abstract: The tear-strips are formed by transverse cutting of a sheet material by a cutter with a rotary blade, of which the blade cooperates with counter-blades carried by a rotary member. Once formed, each tear-strip is held on the respective counter-blade, for example, by means of a vacuum, so that it can be transferred to a sheet of wrapping material. The tear-strip is applied to the wrapping material transversely by the combined action of the counter-blade and of a striker block carried by a further rotary member disposed on the opposite side of the sheet material. The sheet material can thus advance at a constant speed throughout the process of applying the tear-strips. The preferred use is for automatic packaging machines for products such as food products.

Abstract: A disposable panty shield comprising a thin, highly absorbent pad having a body-contacting surface, an absorbent layer, a liquid barrier, an adhesive layer, and a release layer to protect the positioning adhesive prior to use wherein the panty shield has been densified by fusing all pad layers together in a manner such that the interstitial space between the individual fibers in the densified areas is not sufficient to readily allow fluid to flow through, and the liquid barrier has a contoured surface. The adhesive layer is attached to the liquid barrier such that the adhesive follows the contour of the liquid barrier.

Abstract: An apparatus for indexing a seal roll which is engagable by a heat seal head to prevent the contact area of said heat seal head from successive landing at the same location on the seal roll includes a driven pulley mounted coaxially with the seal roll and components for indexing to turn the driven pulley. The components include a rocker mounted on a common axis with a drive pulley via a one-way clutch and an actuator connected eccentrically to the rocker such that reciprocating motion of the actuator rotates the rocker in opposite directions. In one direction, the rocker rotates the drive pulley via the one-way clutch to index the roll via the drive belt and driven pulley. In an opposite direction, the clutch permits rotation of the rocker in the opposite direction free of rotation of the drive pulley. A brake member is connected to the rocker eccentrically of the common axis, the brake member clamping the drive belt against a stop member for seizing rotation of the roll during the heat seal procedure.

Abstract: A process and apparatus for producing a laminate containing a metal foil strip and a plastic film strip, in which the two strips have stamped structures repeated at regular intervals in the longitudinal direction of the strips and are disposed at contiguous points in the laminate, a pre-stamped strip and the second strip being continuously joined together from one end.

Abstract: Valve making apparatus heat seals valve films together, and cools the resulting product web. Valves are preferably formed in two side-by-side serial arrays, with each operation of a valve die forming multiple balloon valves, including a portion of a balloon valve to be completed on a subsequent operation of the sealing die. A tension control and web conveyor are also disclosed.

Abstract: An ultrasonic system for intermittently changing a condition of a workpiece is disclosed. The ultrasonic system includes an ultrasonic horn and a rotating anvil roll positioned to form a close relationship with each other comprising a nip. One of the ultrasonic horn and the rotating anvil roll includes an outer radial surface having a first length having a first amount of surface area per unit length of the respective outer radial surface, and a second length having a lesser amount of surface area per unit length of the respective outer radial surface. When ultrasonic energy is applied to the ultrasonic horn, the second length changes a condition of the workpiece when applied in the nip, but the first length does not change that condition. The change in condition occurs because the decrease in surface area along the second length increases the ultrasonic energy per unit area, as applied in the nip, to at least the threshold amount necessary to change the condition.

Abstract: A method of making a slotless electric motor wherein the active winding segments are adhesively affixed to a support surface or previously deposited active wire segments to form a self-supporting winding structure. The self-supporting structure is then secured in a magnetic structure of the slotless stator.

Abstract: The present invention provides an improved method for laminating a first three-dimensional apertured or non-apertured film material to a second flat or three-dimensional apertured or non-apertured film material utilizing the heat generated by the extrusion of the first and/or second materials and the films produced thereby.

Abstract: A method for embossing a sheet of creped paper composed of at least one ply, whereby the sheet is engaged between two metallic cylinders fitted with protrusions and driven in rotation in a conventional manner and mesh with each other while having a play e1 between the tops of the protrusions of one cylinder and the opposite surface of the other cylinder, and a play e2 between the slopes of two adjacent protrusions wherein e1 and e2 are determined in the direction transverse to the direction of paper advance in such a manner that the ratio of e1/e2 is between 0.8 and 1.

Abstract: This invention relates to a fibrous laminated material wherein a first fibrous layer comprising a plurality of staple fibers or continuous filaments of a thermoplastic material and a second fibrous layer comprising a plurality of staple fibers or continuous filaments of two or more thermoplastic or other materials are bonded together in a spaced apart bonding pattern having apertures formed therein to form a fibrous laminate having improved liquid distribution and management properties as well as enhanced comfort and softness when placed in contact with human skin. Also disclosed are a method and apparatus for making such a fibrous laminate.

Abstract: In order to laminate a fabric to a plastics material grid formed of oriented strands connected by junctions having thicker and non-oriented or less-oriented nodes, the fabric and the grid having the same melting temperature, the grid is heated by a drum to melt the surfaces of the nodes, and the grid and the fabric are passed through a nip formed by nip rollers, the fabric having been pre-heated by passing around a preheat roller. One nip roller has surface protuberances formed by knurling of such a size that a number of protuberances engage (by way of the fabric) each node of the grid.

Abstract: A method and apparatus for forming "seamless" retroreflective sheeting is described. At least two mold surfaces are used, each having alternate areas of arrays of prism recesses and spaces. In a first step, prisms are formed in one of the mold surfaces and applied to a base film or web. Next, prisms are formed on the second mold surface and applied to the spaced areas left in the first step.

Abstract: A process and apparatus for processing flat workpieces, in particular for carrying out operations between fabric pieces in superposed relationship, feeding the workpieces to a continuously operating workstation by pre-conveyors that cooperate with subsequent conveyors. The pre-conveyor and each subsequent conveyor are so arranged that, upon starting the pre-conveyor with a workpiece on its conveyor path, the conveyor path of the pre-conveyor is extended over the conveyor path of the subsequent conveyor to such an extent that the workpiece can be moved over the conveyor path of the subsequent conveyor. When that position is adopted, the conveyor belt of the pre-conveyor is stopped and the workpiece is deposited on the conveyor belt of the subsequent conveyor by shortening the path of the pre-conveyor.

Abstract: To provide a corrugating roll for a single facer which avoids generation of press marks or fracture of paper without a loss of paper by suppressing a contact pressure between a corrugating medium and a liner paper, and which may manufacture the corrugated paper in a low cost with easiness of machining work, in a corrugating roll for a single facer, in which a pair of corrugating rolls engage with each other through a tooth form in parallel to roll axes on circumferential surface portions of the rolls, a profile of a tooth tip portion is composed, in combination, of a plurality of arcs that are symmetrical with respect to a tooth apex portion. The profile of the tooth tip portion includes the tooth apex portion and is constituted in combination by a first arc having substantially the same radius of curvature as that of an outer circle of the corrugating roll.

Abstract: An apparatus for the manufacture of curved insulating glass, for use on automobiles, is made providing separate paths for the two sheets of glass making up the insulating double-glazed glass, until an assembly station (M) is reached. Two separate centering stations (D and D1) are also provided. The apparatus has, in the single assembly station (M), a pressing device to press the insulating glass (V) until the desired thickness is obtained.

Abstract: The present invention relates to a method for mutually bonding at least two moving continuous material webs of material (1,5) to form a laminate (12) which includes at least one puckered material layer. A first and second web (1,5) are advanced at different speeds (V.sub.1, V.sub.2) to a web bonding means (4) in which the webs are mutually bonded and the resultant laminate (12) is further advanced at the lower speed (V.sub.2). Because of the difference in speed between the two webs, that web (1) which moves at the higher speed (V.sub.1) at the web bonding moment is puckered while the other web (5) remains smooth. The invention also relates to an arrangement for mutually bonding two material webs (1,5) in accordance with the method, and to an absorbent article (17) which includes a liquid-receiving outer layer (20) which contains at least one puckered, first liquid-permeable layer (21) and at least one smooth, second liquid-permeable layer (22).

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: This invention relates to a film laminated material wherein a first film layer comprising a thin film of a thermoplastic material and a second fibrous layer comprising a plurality of staple fibers or continuous filaments of two or more thermoplastic or other materials are bonded together in a spaced apart bonding pattern having apertures formed therein to form a film laminate having improved liquid distribution and management properties as well as enhanced comfort and softness when placed in contact with human skin. Also disclosed are a method and apparatus for making such a film laminate.

Abstract: A paper cushioning mat for packaging and a method of producing the paper cushioning mat. The paper cushioning mat comprises two paper substrates and multiple paper cushioning pieces distributed between the substrates and adhered thereto. The paper cushioning pieces are made by cutting a coil prepared by rolling a single faced corrugated fiberboard and fixing with an adhesive crosswise to round slices of a certain thickness. Angle of cutting the coil may be inclined to the angle rectangular to the axis of the coil. The paper cushioning mat is used for packaging articles by, for example, laying the mat between the container walls and the article or by filling spaces. The mat can be reused, and easily disposed.

Abstract: Apparatus and related method for activating pressure sensitive adhesive on predetermined portions of a first sheet in order to fasten the first sheet to a second sheet are provided which include at least one sealer wheel formed with an interrupted surface pattern for applying pressure along the adhesive to effect a rhythmically interrupted sequence of sealed spots between the first and second sheets.

Abstract: To weld together thermoplastic foils to form folders or binder jackets (1), in which the thermoplastic material is difficult to weld by externally supplied heat, an ultrasonic generator is coupled to a plurality of sonotrodes (41), assembled in a sonotrode system (17), against which a welding head (16) is reciprocated, with the foils (24) between the welding head and the sonotrode system (17). The sonotrodes are excited by ultrasonic energy, and secured to a machine frame (14) by attachment posts (45, 45') which are coupled to the sonotrodes (41) or the machine frame (14), respectively, at locations where the sonotrodes or the posts, respectively, have wave nodes when excited to ultrasonic oscillations, so that, effectively, no ultrasonic energy is coupled to the machine frame.

Abstract: The method consists in pressure bonding a first strip to a second strip through a bonding press, marking each of the strips with the pattern pitches and juxtaposing the pattern pitch markings of each strip at the time of the bonding by extension of at least one strip with respect to another and by differential heating of each of the opposing strips to cause a relative shift, by expansion, of the two strips with respect to each other.

Abstract: An embossed paper laminate having two laminae. The laminae are embossed so that each embossed site of one lamina is adhesively joined to the nonembossed region of the other lamina. The laminate is made by two close tolerance pattern rolls juxtaposed to form a nip. Each pattern roll has radially extending protuberances which contact the periphery of the other pattern roll intermediate its protuberances. The laminae are fed through the nip in face-to-face relationship and are embossed and adhesively joined to the other lamina by the radially extending protuberances.

Abstract: An apparatus for sealing superposed film webs or flat lying tubular webs of a thermoplastic synthetic material, including sealing bars heatable by heating appliances, which are displaceable towards each other and away from each other and over whose front surfaces there can be spread a separating sheet of a material not sticking to the synthetic material.

Abstract: The method of the invention includes steps of i) preparing a body material and a stack of cap materials; ii) cutting open one side of the body material; iii) sealing the cap materials to an opposite side of the body material; iv) continuously welding an arched sealing line on the body material between either two cap materials so as to form a series of curved raincoat bodies and a series shirt covering alternatively disposed on the body material; v) separating the shirt coverings from the curved raincoat bodies; and vi) packing the separated raincoats and shirt coverings separately. The machine for the method includes a sealing mechanism for sealing the cap materials to the body material, and a shape forming mechanism for continuously welding an arched sealing line on the body material between either two cap materials.

Abstract: The ply-bonding device for paper converting machines comprises a support 1,5 to which a movable unit 15 is pivoted. The movable unit is provided with a pressure wheel 19 which cooperates with a counter-roller 2, and a pressure means 31 which forces said wheel 19 against the counter-roller 2. The wheel 19 is resiliently supported on movable unit 15 and, during operation the position of the unit is defined by an abutment 37 on the support 1,5. (FIG. 1).