Abstract: This invention relates to apparatus and methods for fabricating a composite web having transverse stretch. In one embodiment a forming plow forms at least one groove in a first web of material. An applicator roll applies a second web of transversely stretchable material to the first web while maintaining a facing portion of the second web in facing relationship with, and spaced from, the portion of the first web formed in the groove. Urging apparatus, such as a push roll having an axis, can intermittently urge the second web into the groove and thereby into surface-to-surface relationship with the first web over substantially the entirety of the facing portion of the second web. The webs can be secured by an adhesive, applied to portions of the first and/or second web, or by ultrasonic bonding, to thereby fabricate the composite web.

Abstract: A sheet of loop material adapted to be cut into pieces to form loop portions for fasteners of the type comprising releasably engageable hook and loop portions, or to be incorporated into items such as disposable garments or diapers or into sheets of abrasives. The sheet of loop material includes a sheet of longitudinally oriented fibers having anchor portions and arcuate portions projecting in one direction away from the anchor portions, and a layer of thermoplastic backing material extruded onto the anchor portions to bond to the anchor portions and form at least a portion of a backing for the loop material. The thermoplastic backing material can also bond the sheet of fibers to a sheet of backing material.

Abstract: An applicator for coating sheet material has a relatively thick compressible, saturable layer for engaging the sheet which is effective to apply an optically clear coating when saturated with a flood of liquid coating composition. The coated article has virtually no visible defects and has high optical transmission and low haze.

Abstract: A system for controlling the rate of heat transfer between the heating surfaces and a corrugated web in a double backer includes an air flow system operable to selectively apply a vacuum to the underside of the web via chambers formed in the spaces between the heating units or to apply pressurized air to the chambers to cool and lift the web, as necessary. A complementary system controls bowing in the surfaces of the heating units by supporting the undersides of the heating units with columns which include a thermally responsive metal member having an known coefficient of thermal expansion. The metal members are selectively heated by heating elements responsive to sensed bowing of the heating units to eliminate or minimize such bowing.

Abstract: A method of manufacturing a container for the temporary storage of foods is disclosed. The container includes a corrugated medium having a single backer paper thus creating an exposed corrugated surface on a side opposite the backer. The food container is formed such that the exposed corrugation is located towards an interior surface of the container. The method of manufacture involves fabrication of a single-face sheet of corrugated material to which is affixed a tape liner along opposed side edges of the sheet. A wider tape is affixed to the sheet intermediate the lateral edge tapes. The sheet is then cut along a longitudinal midline of the intermediate tape and also across the sheet to form discrete blanks. The blanks are substantially single-face corrugated material but have double-face corrugated material along the lateral edges where the tape was applied. Thereafter, the blank may be further cut, scored and folded to form containers having a single-face,bottom panel and double-face side walls.

Abstract: Provided is an improved corrugated containerboard that includes a corrugated medium sandwiched between and secured to a top liner and a bottom liner. The corrugated medium, top liner, and bottom liner each include fibers that are oriented in a machine direction, and the corrugated medium defines a plurality of flutes that are oriented in the machine direction. The improved corrugated containerboard is constructed from conventional paperboard which is drawn through a corrugation system in the machine direction. A first piece of paperboard is drawn between a pair of dies to form the corrugated medium with flutes oriented in the machine direction. A second and third piece of paperboard are glued to either side of the corrugated medium to form the corrugated containerboard. Each die includes an engaging surface with ridges thereon, and the engaging surfaces are opposed and define a forming zone therebetween which the first piece of paperboard is drawn through.

Abstract: Disclosed is an apparatus for longitudinally pleating a moving lamina. The apparatus features a curved axis roll having a stationary axis circumscribed by a rotating sleeve with a plurality of circumferentially oriented grooves in the rotating sleeve. The pleats are produced by the intermeshing of the lamina with the grooves of the rotating sleeve. Preferably a complementary curved axis roll having lands which interdigitate with the grooves of the first roll is used in conjunction with the first curved axis roll.The apparatus preferably further comprises a third curved axis roll disposed upstream of the first curved axis roll to substantially equalize the paths of travel of any points on the moving lamina by compensating for differences in the paths of travel between the edges and centerline of the lamina.

Abstract: A self-correcting web registration system achieves web shortening by pleating the web with a grooved crease roller. The web passes through a nip between the crease roller and an opposing drive roller which has an elastomeric cover. When web shortening is required and the web is being pleated by the crease roller, the opposing elastomeric roller is overdriven with respect to the normal advancement rate of the web. Further web shortening may be achieved by selectively increasing pressure between the crease roller and the elastomeric drive roller which causes the pleats in the web to become deeper. The crease roller may be used in conjunction with a tension roller which can be selectively engaged to stretch the web and achieve lengthening. Both rollers may be mounted in a single chassis which pivots relative to a frame-mounted drive roller. This provides selective engagement of either the tension or crease roller, depending upon the position of the chassis.

Abstract: The absorbent laminated sheet is composed of at least two plies (1.9), embossed, constituted essentially of cellulose fibers, bonded together at least partially by means of protruding elements relative to the surface of said plies and pointing inward to the sheet; it is characterized in that the protruding elements (101) are positioned essentially according to lines or combinations of lines reproducing spaced motifs (100), which recur indefinitely.Application as domestic or sanitary paper.

Abstract: An improved method and apparatus for forming cellular core structures from corrugated fibreboard utilizing flat sheets of single wall corrugated board of rectangular configuration. The sheets are fed end one at a time in the direction of the board flutes into a rotary die cutting station to form a parallel array of evenly spaced die cut lines extending perpendicular to the flute-feed direction from one side edge to the other side edge of each sheet. Each die cut line is defined by an alternating series of very long die cuts and very short die cuts individually spaced from one another along the die cut line by very short uncut sheet material connecting portions to thereby form a plurality of strips of sheet material intermittently integrally joined by the uncut sheet material connecting portions. An array of crease lines extend parallel to the flute-feed direction and are arranged in pairs of spaced apart in the direction of the die cut lines and closely flanking each of the uncut connecting portions.

Abstract: A method and apparatus for manufacturing a corrugated product in which the corrugated mediums are bonded at their flute tips with no intervening liner. A corrugated belt or belts is provided to withdraw the bonded and aligned mediums in a substantially straight line from the pair of corrugating rolls which are synchronised to achieve the alignment and bonding of the flute tips of the two mediums. The corrugated belt provides support and constraint for the bonded mediums until the bond is set or until a liner sheet is bonded to one of the mediums.

Abstract: An embossing machine wherein two driven embossing rolls are provided with ripheral knobs and depressions. The knobs of one roll extend with clearance into the depressions of the other roll and vice versa during travel of the knobs and depressions through the nip of the rolls. The clearances between the top lands of knobs and adjacent portions of internal surfaces bounding the respective depressions are smaller than the clearances between the flanks of the knobs and the adjacent portions of the respective internal surfaces. This ensures that a carpet of loose fibrous material which is fed into the nip is converted into embossed textile material having a first layer of compacted portions which are formed adjacent the top lands of knobs on one of the rolls, a second layer of compacted portions which are formed adjacent the top lands of knobs on the other roll, and fluffy intermediate portions which connect the compacted portions forming one of the layers with compacted portions of the other layer.

Abstract: An apparatus and method for continuously fabricating lightweight structural panels and the structural panel fabricated thereby are provided, the apparatus being capable of heating a core sheet to a temperature at which the sheet will be plastically deformable such that a corrugation forming means comprising a cylindrical forming drum having a plurality of annular recesses and a plurality of forming mandrels will form a plurality of axially extending corrugations.

Abstract: A corrugated member comprising a top web (2) and a carrier web (3) is manufactured by stepwise forward feed movement of the carrier web, with simultaneous deformation of the top web and joining of the two webs. At a shaping station (1), a deformation element (6) is first introduced between the top web (2) and the carrier web (3), and the top web is pressed against the carrier web by a first pressing means (4), downstream of the deformation element. Then, upstream of the deformation element (6), the top web (2) is pressed against the deformation element by a second pressing means (5), stretched over the deformation element, and joined to the carrier web (3).

Abstract: Pipe made from thermoplastic polymeric material and comprising a transversely corrugated outer wall and a smooth inner wall of constant diameter fusion welded to the inner crests of the corrugations of the outer wall is produced by an improved method involving simultaneous extrusion of two tubes, blow molding of the outer wall and fusion of the two walls while the inner wall is supported by an internal shaping and cooling mandrel. Even when the polymeric material is polyvinyl chloride, good fusion welds and lack of brittleness are achieved by the manner in which extrusion is carried out, control of the location at which the fusion welds are established, and the extrusion formulation. The finished pipe is characterized by the fact that, when the fusion welded areas have been cut for inspection, no line of demarcation between the materials of the two walls can be observed.

Abstract: Apparatus for forming and fabricating single-faced paperboard, the lower corrugating roll is provided with numerous circumferential grooves which are partially evacuated beneath a traveling overlayment of paper web for the purpose of holding the web tightly against the corrugated roll profile. These grooves are evacuated by groove evacuation tubes connected with one or more vacuum manifolds. Such evacuation tubes have flared, tubular distal ends to match the slotted socket of respective tube holders. Each holder also includes a spring loaded mandrel to secure each tube in its respective socket in such a manner as to permit rapid removal and replacement of such tubes.

Abstract: A method for making weather strips in which a polyurethane film is positioned along an anvil having longitudinal parallel spaced anvil surfaces and recesses therebetween with elongate channel-like portions of the film in the recesses. Resiliently compressible polyurethane foam is pressed against the polyurethane film along the anvil so that the foam is compressed against the anvil surfaces and extends into the channel-like portions of the film in the recesses. The compressed foam and film along the spaced anvil surfaces are then sonically welded to fuse the foam together in its compressed state and fuse the compressed foam to the film, and the fused foam and film are slit along the anvil surfaces to form separate weather strips.

Abstract: A one-sided corrugated cardboard machine comprising a machine stand with two fluted rollers in meshing engagement with each other and an auxiliary roller rotatably supported therein, the axes of said rollers being disposed approximately in a common plane preferably inclined towards the vertical, with the machine stand being supported at the underground on one side of the plane, and members cooperating with the roller pack such as deviation rollers, guide plates, scrapers for the pressure roller, and the like, being supported in a stand section on the other side of the plane, said section being a rigid frame spanning the roller pack and which is detachably yet fixedly connectible to the machine stand.

Abstract: Disclosed herein is a method and means for replacing upper and lower corrugated rolls in a single facer having a cassette frame for rotatably supporting the upper and lower rolls and a main frame to which the cassette frame is detachably connected. The method comprises the steps of suspending and moving away the cassette frame apart from a predetermined mounting position in the single facer, keeping a spare cassette rotatably supporting other upper and lower rolls waiting in a suspended condition and fixing the spare cassette frame to the predetermined mounting position in the single facer in place of the cassette frame removed. Means for performing the method is disclosed which comprises a cassette frame rotatably supporting the upper and lower rolls; and a main frame carrying a pressure roll and a gluing unit. The cassette frame is detachably connected to the main frame.

Abstract: A one-sided corrugated cardboard machine having an upper and a lower fluted roller, a pressure roller associated with the lower fluted roller, a suction box essentially extending the width of the lower fluted roller and connected to a vacuum source while being arranged on the side of the lower fluted roller which is not covered by the corrugated material web, said suction box creating a vacuum in annular suction grooves of the lower fluted roller, and sealing sheet metal members engaging within the suction grooves on the side of the suction box facing the pressure roller, with a supporting beam for the sealing sheet metal members retained in the machine stand which is arranged separately of the suction box, said suction box being adapted to be adjusted through a greater distance with the aid of an adjusting device.

Abstract: One-sided corrugated cardboard machine comprising a first fluted roller and a second fluted roller in meshing engagement with each other and between which a web of cardboard is introduced to be corrugated, the second fluted roller being provided in the circumferential outer surface thereof with several annular grooves arranged at axially spaced intervals, and a device which during the movement of the web of corrugated cardboard from the position of engagement between the second fluted roller and the first fluted roller to the position of engagement between the second fluted roller and an auxiliary roller biases the web of corrugated cardboard with a vacuum pressure via the suction grooves, wherein the second fluted roller has suction boxes associated therewith one each at the inlet and the outlet of the web of cardboard, said suction boxes respectively extending only over a small portion of the circumferential region of the fluted roller not covered by the web of corrugated cardboard and being closed on the s

Abstract: In apparatus for producing a corrugated element, each pressing device for deforming a top web of the corrugated element has a separate guide means which is adjustable relative to a plane extending transversely with respect to the direction of forward feed movement of the webs. Each guide means is secured together with drive transmission for its pressing device to a plate. The plates can be adjusted by adjusting screws on opposite sides of the webs, thereby permitting the pressing devices to be adapted to specific operating conditions.

Abstract: The present invention relates to a method and apparatus for laminating two webs of corrugating medium to produce a composite corrugating medium for the manufacture of corrugated fiberboard. The method essentially consists of the steps of (a) applying a coat of a water-soluble adhesive onto one side of at least one web of a first and second corrugating medium; (b) conveying the first and second corrugating medium over the surface of a first heating cylinder such that the water-soluble adhesive is between the first and second corrugating medium to join them together into a loosely bound composite corrugating medium, wherein heat is applied to one surface of said composite corrugating medium through the first heating cylinder; and (c) passing the opposite surface of the composite corrugating medium to a second heating cylinder to subject the composite to a second heating step. The present invention contemplates an apparatus for carrying out this invention.

Abstract: A process and apparatus for manufacturing a cable having a composite shield and armor sheath design is disclosed. The process comprises the steps of corrugating a laminated tape formed by bonding a plastic coated aluminum tape to a wider steel tape with one edge of the aluminum tape registering with one edge of the steel tape, forming the corrugated laminated tape around a cable core with the uncovered portion of the steel tape overlapping the registering edges of the laminated tape, and extruding an outer jacket of polyethylene over the corrugated laminated tape.

Abstract: A press, carried by a first table and having punch and die components, receives a rectangular filler sheet and forms a lateral accordian fold sheet. The accordian fold sheet is lifted from the press by transfer means and placed upon an envelope sheet overlaying a second table. Hinged panels carried by the second table fold the envelope sheet over the accordian fold sheet, forming a rigid compartmentalized panel having an opening along a longitudinal edge. The second table, with the opening upright, moves to a position under a receptacle from which granular loose fill material is entered into the compartments through the opening. Subsequently, flaps extending along the panels move to further fold the envelope sheet and close the opening.

Abstract: Apparatus is disclosed for splicing together successive sections of single facer corrugated board having planar and corrugated fibrous layers, which sections are initially conveyed colinearly in spaced relation at uniform speed with the flutes extending in the direction of travel of the sections, characterized by the provision of a reciprocatory vacuum bar feed member operable initially to accelerate a subsequent section relative to a preceding section to a position in which a protruding layer portion at the trailing end of the preceding section is in superposed relation relative to a protruding layer portion at the leading end of the subsequent section, and subsequently to displace the section at the lower uniform speed at the moment at which the adjacent ends of the sections are in overlapping relation, whereupon the superposed portions may be bonded together to connect the sections to form a continuous web having longitudinally extending flutes.

Abstract: The present invention relates to a method and apparatus for laminating two webs of corrugating medium to produce a composite corrugating medium for the manufacture of corrugated fiberboard. The method essentially consists of the steps of (a) applying a coat of a water-soluble adhesive onto one side of at least one web of a first and second corrugating medium; (b) conveying the first and second corrugating medium over the surface of a first heating cylinder such that the water-soluble adhesive is between the first and second corrugating medium to join them together into a loosely bound composite corrugating medium, wherein heat is applied to one surface of said composite corrugating medium through the first heating cylinder; and (c) passing the opposite surface of the composite corrugating medium to a second heating cylinder to subject the composite to a second heating step. The present invention contemplates an apparatus for carrying out this invention.

Abstract: Methods and apparatus are provided for making a laminate which is used to form a corrugated outer shield (60) of a sheath system (50) for a lightguide fiber cable (20). A strip (81) of a corrosion-resistant metallic material having a relatively high elongation, an oxide surface layer (65) and a relatively coarse outer surface is preheated to a temperature within a predetermined range. Afterwards, a composite adhesive strip is brought into engagement with the metallic strip and moved between a pair of rollers (91--91) which are maintained at a first temperature and which causes the strips to be subjected to a predetermined pressure. Then the two strips are moved between another pair of rollers (97--97) which are at a second temperature greater than the first and which subject the strips to the predetermined pressure. The resulting laminate (61) is corrugated by a device (104) and formed into the outer shield (60) about an inner shield (51) which is made of a highly conductive metallic material.

Abstract: A method and apparatus for applying discrete lengths of elastic strip material to predetermined areas of a continuously moving web by corrugating the web and applying the discrete lengths of substantially unstretched adhesively coated elastic over the corrugations in predetermined areas, bonding the elastic to the areas, and withdrawing the web from the corrugations to stretch the elastic; and the conformable garment produced thereby which may be in the form of an elasticized leg disposable diaper.

Abstract: A method of preparing cells for the purpose of enabling one fluid to be affected by another fluid via thin membranes of inorganic artificial fibres, which membranes are corrugated all over or in part and caused to bear upon each other along discrete lines of contact so as to form through passages or compartments for the fluids. The cell is constructed of membranes of artificial fibres which have a filament diameter of at least 3 and at most 20 micrometers and are elastic. The fibres are loosely matted so that when the spaces between the fibres in the assembled cell have been filled with a fine powder which is bound with an inorganic binder the powder forms a load-bearing layer which is cohesive throughout the surface extension of the membrane and through its cross-section and in which the fibres act as reinforcement.

Abstract: Apparatus for the production of a corrugated cardboard having a cover-lining on at least one side, with an upper grooved roll and a lower grooved roll which have outwardly open annular grooves in distribution over their length, to which a suction source is connected through nozzles held by carriers, of which nozzles two in each case are arranged opposite to one another in the region of the paper web entry and exit of the lower grooved roll, fitting into an annular groove, characterized in that each annular groove (12) has a width substantially less than its depth, in that each nozzle (13, 13') which fittingly fills the annular groove possesses a pressed-flat pipe end (14, 14') and in that at least the outer nozzles of the nozzles arranged in a row are connectable additionally to an air blast source (32).

Abstract: In a single-face corrugator of the type in which the corrugated paper is held by suction against the lower corrugated cylinder, the latter includes, outside its inner chamber filled with saturated heating vapor, separate longitudinal channels in the peripheral body of the cylinder. Each channel is connected to the exterior via axial channels and elongate grooves machined in the periphery of the cylinder, and can be connected to a suction apparatus via two hollow and sealed circular arcuate sectors bearing on the part of the face of the cylinder associated with the holding region on the latter. The grooves are staggered and machined in circumferential portions of the periphery of the cylinder so as to extend over several corrugations thereof. An additional blowing sector permits detachment of the corrugated paper.

Abstract: A method of constructing a fiberglass structure features that enable a gelcoat protective layer to be applied to an article formed in an automatic process. In the process, a web of fiberglass is drawn through a bath of structural resin to impregnate the fiberglass with the structural resin. A web of organic, porous veil material is drawn through a bath of gelcoat resin simultaneously with the structural resin impregnated web of fiberglass. The two webs are squeezed together, and the resin metered to provide a composite web having a layer of resin and a layer of gelcoat. A mold draws the composite web off of the rollers. Once a section has been drawn onto the mold, the web is sheared. Then the mold is moved into an oven for heating and curing the article.

Abstract: A method and apparatus for minimizing or eliminating warp in corrugated board by imparting different curvature on alternate successive lengths of the board being manufactured prior to its being stacked. The corrugated board, as it moves through the manufacturing apparatus, is subjected to treatment on its upper surfaces at different intervals that the lower surfaces to impart various curvatures to the sections being cut and stacked. As the cut corrugated board sections are accumulated in the stack alternate groups of board sections have opposite curvature throughout the height of the stack. The stacked sections are maintained in this disposition a time sufficient for the weight of the stack to render the formed sheets substantially flat.

Abstract: In a single facer including an upper corrugating roll, a lower corrugating roll and a pressure roll, the lower corrugating roll is provided with a plurality of spaced circumferential grooves on the outer peripheral surface extending at right angles to the flutes of the corrugating roll. A plurality of circumferentially spaced bores are drilled in the roll extending in an axial direction and communicating with the bottoms of the aforementioned circumferential grooves. Suction means is disposed at one end surface of the roll for communicating with the bores. The suction means is selectively placed in communication with only those bores which at the time are in an angular position where a corrugated web is to be held in contact with the roll. In one preferred embodiment pressurized gas is placed in communication with selected bores to provide gas therethrough during the period when these selected bores are in an angular position where the corrugated web is to be released from the roll.

Abstract: Apparatus is provided for the production of a corrugated pasteboard having a cover coating on at least one side. The apparatus includes a toothed corrugating element, a toothed corrugating counter-element co-operating therewith, a glue applicator and a drying apparatus. At least one corrugating element is an endless element (2) which loops at least partially around the other element (1). In this manner the noise generation and roll wear are reduced, the quality of the corrugated cardboard is improved, the paper consumption and difficulties of adjustment of parts of the apparatus are reduced and the feed and introduction of the paper web are facilitated.

Abstract: The present invention relates to a reinforced corrugated board which is specifically reinforced in only those locations where such reinforcing is required in the product produced from this board. The board has a smooth top face or liner and a first corrugated layer adhesively affixed therebeneath. To the bottom of the first corrugated layer, a second corrugated layer is affixed. This second layer is only as large as the area requiring special reinforcing in the final product and need not be as large as the first corrugated layer. A bottom liner or facing is affixed to the second corrugated layer and any of the first corrugated layer which extends around the second layer.An apparatus and method for producing this board sheet are also presented.

Abstract: A changeover system for a corrugator designed to halt the corrugator during the changeover to diminish paper loss. When the corrugator is halted, a traveling knife severs the combined webs adjacent the beginning of the steam table run. The slitter scorer and the cutoff are changed and the corrugator is restarted. The traveling knife which severs the combined webs may operate above the steam table or below the steam table; alternate forms may be used.

Abstract: In a corrugating system, a supplemental means for insuring that the liner and corrugated medium are properly conditioned with adhesive or bonding material along the entirety of its length and width of the bondable surface as the machine is starting up following down time to avoid subsequent board delamination.

Abstract: An apparatus for manufacturing single-faced corrugated board by corrugating a core board, applying a paste to the corrugated core board and then facing the corrugated core board with a liner board on one side thereof, comprises an airtight chamber arranged on the back side of a top roll, a bottom roll and a press roll so as to enclose a pasting unit, air supply means for supplying air into the airtight chamber and exhaust grooves formed in the peripheral surface of the bottom roll, whereby a high pressure is established within the airtight chamber to thereby closely press the corrugated core board against the bottom roll.

Abstract: A paper corrugating machine has features for cleaning the glue from the grooves of the glue roller. The corrugating machine is of a type having upper and lower intermeshing corrugating rollers that receive a first web of paper between them. Fingers located near the lower corrugating roller retain the web in engagement with the lower corrugating roller after it has been corrugated. A glue roller applies glue to the corrugated web at this point. The glue roller has grooves to accommodate the retaining fingers. An air jet nozzle is mounted above each groove for discharging air into the grooves to remove excess glue prior to contacting the retaining fingers. The nozzles are adjustable in their positioning and have cleaning devices for cleaning them while the machine remains in operation.

Abstract: Process and apparatus are provided for forming corrugated filter sheet by folding a long strip of sheet material into corrugations extending longitudinally of the strip, press-bending the sheet along the longitudinal fold lines of the intended corrugations; and gradually drawing in the sheet from the sides towards the center, while pushing the sheet out from each side along the fold lines, so as to form the intended corrugations, reducing the width of the sheet according to the height and width of the corrugations.

Abstract: A paper web is passed between a pair of first and second corrugating rolls to form corrugations therein. The second corrugating roll is provided with a plurality of longitudinally spaced annular suction grooves in communication with a suction device from which subatmospheric pressure is applied through the annular suction grooves to the corrugated web, while it is travelling around the second corrugating roll, retaining the corrugations in the flutes of the roll.

Abstract: Each corrugating roll on a single facer machine is separately driven at substantially the same speed without the corrugating rolls being geared directly together and without transmitting driving torque through mating flutes on the rolls whereby the rolls may corrugate a web passing therebetween with minimal tension of the web.

Abstract: Method and machine for fabricating plasticboard wherein areas of bonding are created with localized heating and pressure.

Abstract: A machine and a method are disclosed for forming pleated and wound electrical capacitors having a metallized dielectric which is metallized on both sides to form electrodes thereon. The metallized dielectric material is fed from supply rollers and it is pulled tightly over one or more rotatable discs so that it is locked firmly onto the periphery thereof. In one embodiment, three rotatable discs are employed and the center disc projects beyond the other two discs which are aligned at acute angles with respect to the center disc. After the dielectric material leaves these discs, it passes through a low pressure air stream which smooths out the wrinkles in the material. It is then fed under tension around a substantial portion of the periphery of a relatively large winding wheel.

Abstract: An apparatus for the continuous production of prefabricated insulating panels is provided, which includes a feeding station for a lower metal sheet and for an upper metal sheet, a rolling-mill train for shaping the sheets, a furnace for heating the sheets, a device for injecting expandable plastic material between the sheets, a joining unit for joining the sheets together and for holding the expanded plastic material in place, and a cutter for cutting the finished panels. The joining unit has two, link-type upper and lower conveyors for the sheets shaped by the rolling-mills, at least one of which is adjustable, so that the distance between them may be regulated according to the thickness of the panel, with the conveyors being arranged to revolve continuously around rollers which rotate about a horizontal axis. An article produced by the apparatus is also provided.The present invention relates to an apparatus for producing insulating panels and the panels produced thereon.

Abstract: Method and apparatus to produce a bonded loop pile carpet. The carpet machine is of the rotary type which uses cooperating blade members to form the yarn loops for bonding to a backing sheet. One of the blade members is reciprocably mounted in the machine and moves in a downward curved angular path to contact the yarn.

Abstract: A continuous method of manufacturing a drainage system and apparatus therefore comprises a continuous assembly line which forms a plastic core material followed by continuously forming an envelope surrounding the formed plastic core and then sealing the stuffed envelope. In a preferred embodiment of the present invention, an extruder is used to transform granulated plastic material into sheet form. This plastic sheet is then fed directly into a plastic forming machine. The plastic forming machine will form a plurality of hills and valleys in the plastic sheet thereby defining a plastic core. Thereafter, continuous sheets of permeable fabric material are attached to the upper and lower surfaces of the formed core while the edges of the permeable fabric are secured to one another either by adhesive, sewing or any other suitable bonding method. Next, the draining system is either cut into desired lengths or rolled for shipping purposes.

Abstract: A method for forming a disposable absorbent article having portions which are elastically extensible in at least the cross-machine direction.