Abstract: A molding apparatus which is used in a continuous molding operation includes an endless looped track, track carriers which are moved around the track to and from a product shaping mold region and a transfer system for replacement of mold block members used in the apparatus. The transfer system, which operates without interrupting the molding operation includes transfer carriers controlled to move synchronized with the track carriers at a transfer location remote from the mold region and actuators which slide the mold block members between the track carriers and the transfer carriers at the transfer location when the transfer carriers are synchronized with the track carriers.

Abstract: A corrugator unit, particularly for sheets or webs of paper, or similar, of the type comprising at least two rolls (1, 2), having a toothed or corrugated surface (101, 202), and being mutually engaged and pushed against each other by a predetermined pressure or force. The invention provides that the mutual compression between rolls (1, 2) is exerted (4, 5, 106, 21, 22, 25, 26) over the whole axial length of the rolls (1, 2). This may be obtained through mechanical (6) or magnetic (21, 22, 23, 25, 26) means.

Abstract: A filter material laid in folds in a plurality of folds, characterized in that the folds are provided with at least one bending portion having a bending resistance moment that is reduced in comparison with the remaining portions and a method and apparatus for producing same.

Abstract: A calender for treatment of a web of a nonwoven textile V made of thermoplastic fibers. The calendar includes a heated embossing roller made of steel and a counter-roller that runs at the same circumference velocity. The local plastification in the nonwoven textile V that is produced at the locations of the raised embossing areas results in a board-like feel of the nonwoven textile V. To reduce this hardness, the web of the nonwoven textile V is broken, after having cooled at least partially.

Abstract: A corrugating roller unit is moved smoothly between a first reference plane and a second reference plane at different heights by a roll-out apparatus having a set of moving support device. A first moving support device supports the corrugating roller unit when the corrugating roller unit is in contact with the first reference plane. A second moving support device supports the corrugating roller unit when the corrugating roller unit is in contact with the second reference plane. A positioning device keeps the second moving support device in contact with the second reference plane when the second moving support device is providing the support for the corrugating roller unit. When the second moving support device moves the second reference plane to the first reference plane, the positioning device prevents the second moving support device from restricting movement of the corrugating roller unit.

Abstract: A method, apparatus and filter unit product wherein filter media fibers are fed from a media supply source to a mat forming interchangeable and movable contoured surface to contour shape a filter media mat into a preselected form for subsequent movement to a transfer zone for further contour shaping and processing into filter unit products with preselected frame arrangements.

Abstract: A single facer for corrugated paperboard of the type using a very large diameter fluted bonding roll and a much smaller diameter fluted corrugating roll which engages the bonding roll to provide a corrugating nip. The small diameter corrugating roll is made to be resilient so that it is capable of inward deflection in the vicinity of the corrugating nip in order to cushion impact as the rolls interengage along the corrugating nip. This cushioning deflection absorbs vibrational movement due to chordal action of the interengaging flutes, and thereby reduces noise levels, roll wear and improves the quality and consistency of corrugation.

Abstract: The invention consists of a corrugating machine comprising a plurality of corrugating bars (6) fixed to an endless chain (5) rotatably driven and a plurality of support bars (13) for the material to be corrugated (10) driven in translation and perpendicular to their direction of movement, a part (42) of the endless chain being opposite the plane of said support bars, the corrugating bars and the corresponding support bars interpenetrating one another, wherein the corrugating bars (6) are movable in translation with respect to the endless chain (5), their movements being made approximately perpendicular to the plane of the support bars, when they are opposite said plane.

Abstract: The invention consists of a machine for continuously reprofiling a corrugated material comprising:support bars (7) for the corrugated material, driven in translation and perpendicular to their direction of displacement,reprofiling bars (2) fixed to an endless chain (11) rotatably driven and movable in translation with respect to said chain (11),counter-forming bars (6) fixed to another endless chain (16), also rotatably driven, and movable in translation with respect to said chain (16),the profile of the counter-forming bars being complementary to that of the reprofiling bars, the reprofiling bars (2) and counter-forming bars (6) being positioned on either side of the plane of the support bars (7) in such a way that parts of said bars are opposite one another and the translation movements of the reprofiling and counter-forming bars opposite one another are made approximately perpendicular to the plane of the support bars.

Abstract: A corrugated plastic panel is produced by providing a plastic panel corrugation device whereby a plastic material is extruded, a cooled extrusion is formed by passing the extrusion through a cooling roller assembly, a corrugated extrusion is formed by passing the cooled extrusion through a forming roller assembly when the cooled extrusion has reached its impressionable temperature range, a corrugated extrusion is passed through a pulling roller assembly when the corrugated extrusion has reached its hardening temperature range, and a corrugated plastic panel is formed by passing the corrugated extrusion through an extrusion cutting assembly.

Abstract: An apparatus for producing a corrugated tube contains a roller assembly composed of plural rollers having plural convexed rings, respective convexed rings forming a helix as a whole so as to substantially form a single rotating shaft body, and a synthetic resin supplier for supplying a strip of synthetic resin onto the roller assembly. The pitches between the convexed rings, and the diameters and the widths of the convexed rings are so constructed as to be gradually decreased in accordance with the contraction percentage of the synthetic resin. The apparatus is provided with a follower ring on a roller valley portion between the convexed rings, the follower ring being rotatable in response to circumferential speed of the apex of the convexed ring.

Abstract: A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. First and second wheel pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel is disposed between the wheels of each pair and rides on guide tracks associated with and facing oppositely to the first and second tracks respectively through the molding section. Each mold block is a plurality of sub-blocks secured end to end, with each sub-block having an arcuate face and corrugated with not more than one complete wavelength. Vacuum channels about sub-block end surfaces connect the block face to a vacuum port.

Abstract: An apparatus for producing a corrugated tube contains a roller assembly composed of plural rollers having plural convexed rings, respective convexed rings forming a helix as a whole so as to substantially form a single rotating shaft body, and a synthetic resin supplier for supplying a strip of synthetic resin onto the roller assembly. The pitches between the convexed rings, and the diameters and the widths of the convexed rings are so constructed as to be gradually decreased in accordance with the contraction percentage of the synthetic resin. The apparatus is provided with a follower ring on a roller valley portion between the convexed rings, the follower ring being rotatable in response to circumferential speed of the apex of the convexed ring.

Abstract: A conduit connector is provided so that a heat medium source, a drain and/or a vacuum pressure source are in fluid communication with a cassette containing rotatable cylinders for producing corrugated paperboard. The cassette is insertable in a frame. At least one plug and associated socket are mounted in a first plate and a second plate, respectively. Each plug is secured to an end of a conduit, and the conduit has another end in communication with the cassette. Each socket is in communication with the source. The first plate is fixed relative to the cassette, and the second plate is fixed relative to the source. The plug and the socket are configured to engage each other upon an insertion of the cassette into the frame so that the conduit is in fluid communication with the source.

Abstract: Sheet products having a waved marginal portion are prepared by passing a sheet of a plastic material through and compressing the sheet between shaped circumferential rollers which are positioned and configured to provide therebetween a plurality of differing nip clearance gap distances and to compress the sheet to form an intermediate sheet portion flanked by a marginal waved flanking portion and a second flanking portion, wherein the intermediate portion has a thickness greater than the second portion which, in turn, has a thickness greater than the marginal waved portion.

Abstract: A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. First and second wheel pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel is disposed between the wheels of each pair and rides on guide tracks associated with and facing oppositely to the first and second tracks respectively through the molding section. Each mold block is a plurality of sub-blocks secured end to end, with each sub-block having an arcuate face and corrugated with not more than one complete wavelength. Vacuum channels about sub-block end surfaces connect the block face to a vacuum port. Cooling water channels about sub-block end surfaces connect to water inlet and discharge ports for selectively circulating cooling water through the blocks.

Abstract: An apparatus for the manufacturing of plastic pipes has half shells of which two at a time combine as a pair to form a mold. It is provided with a temperature-regulating bell. Supply lines are formed as flexible supply hoses of temperature-resistant plastic material. A line conduit accommodating them is provided with a protecting tube, which accommodates the supply hoses and which is provided with a heat insulation towards an injection head.

Abstract: Sheet products having a waved marginal portion are prepared by passing a sheet of a plastic material through and compressing the sheet between shaped circumferential rollers which are positioned and configured to provide therebetween a plurality of differing nip clearance gap distances and to compress the sheet to form an intermediate sheet portion flanked by a marginal waved flanking portion and a second flanking portion, wherein the intermediate portion has a thickness greater than the second portion which, in turn, has a thickness greater than the marginal waved portion.

Abstract: A sealing device, which is situated between a rotary cylinder and the opposite edge of a wall of a pressure case, is used in a rotary machine and comprises a seal fitted over its whole length along an edge of a wall, which is parallel to the axis of rotation of the cylinder, and the wall is shifted toward the cylinder by a pressing arrangement so as to enable the seal to be applied against the cylinder. Specifically, the seal has the shape of at least one lengthwise brush with the bristles, which consist of a relatively flexible and heat-resistant material, which is preferably a synthetic material.

Abstract: Device and process for fast cooling and solidifying of molten materials with a metal oxide base. The device comprises two metal cylinders with parallel axes, which rotate in opposite directions and are cooled. The metal cylinders exhibit a corrugated surface, and an elevation on the surface of one cylinder in each case engages in the recess of the surface of the other cylinder with formation of a gap. The melt is poured into the gap, drawn by force and simultaneously cooled under pressure.

Abstract: The device includes a toothed wheel on which pleats of a sheet 10 are preformed, in some cases with the aid of a second toothed wheel 31, and a device for holding by a vacuum; then the preformed pleats are transferred to a pleat gathering wheel 13 either directly or through the medium of a pleat pressing wheel, where they are laid down then fixed to form a pleated sheet 23. The toothed wheels 5 and 31 and the pleat pressing wheel and/or the pleat gathering wheel 13 can be arranged to produce areas with no pleats at regular intervals.

Abstract: A corrugator for ribbing pipes includes two synchronously circulating chains of mold halves, a guide device for the mold halves having an input zone in which the associated mold halves are brought into engagement with each other, a molding zone in which a central channel is provided for guiding the engaged mold jaws and an output zone in which the mold halves are again separated from each other, as well as return guides for the mold halves on the path between the output and input zones and cooling apparatus for cooling at least the central channel with a coolant. A plurality of hollow profile modules is provided for forming the molding zone, each module being provided with a central cavity for the cooling apparatus and two lateral guide portions. Modules are arranged in pairs joining each other transversely of the production direction of the corrugator, and a plurality of module pairs are arranged adjoining each other in series in the production direction of the corrugator.

Abstract: Fluted roller for a single face corrugator comprising grooves extending around the periphery thereof, the bottom of the grooves being deeper than the bottoms of the corrugation of the fluted roller, wherein the grooves extend at an angle unlike 90.degree. to a surface line of the roller running parallel to the axis thereof.

Abstract: Flaking roll apparatus (10) for the processing of cereal products or the like is provided which includes a pair of counterrotating, nip-defining flaking rolls (76, 78) which are obliquely oriented with the rotational axes thereof lying in a plane situated at an angle between about 15.degree. and 70.degree. with respect to the horizontal. In this manner, the apparatus (10) uses less floor space and can more readily be serviced and cleaned. The overall flaking apparatus (10) preferably includes threadably adjustable devices (136) for maintaining proper nip clearance between the flaking rolls (76, 78) and for precise adjustment thereof. Additionally, end-to-end adjustment of the flaking roll assembly (10) is afforded by means of an eccentric mount (108) for one of the flaking rolls (76).

Abstract: An apparatus for roll forming of thermoplastic material is provided which employs a pair of rollers having forming surfaces thereon, the pair of rollers defining a gap through which the thermoplastic material is to be passed during the forming operation, the thermoplastic material being dielectrically heated to a softening temperature as it passes between the rollers by a radio frequency electromagnetic field produced between the rollers by activating a radio frequency generator or oscillator which is electrically connected to one of the rollers, the rollers each having conductive portions between which the electromagnetic field is produced.

Abstract: A roller press for compacting fine-grained chemicals, especially salts, into sheets, having synchronously driven rollers with two axially spaced pressing surfaces on ring elements being provided with radial shoulders at both of their ends. Screw feeders for feeding the salt into the roll nip and wedge-shaped wall elements closing-off the roll nip in the axial direction on both ends of said ring elements and bearing against the shoulders, are also provided. Adjustment rods acting parallel to the roll axis are provided for the outer wall elements and vertical rods between the inner wall elements acting onto these wall elements via wedge-shaped surfaces arranged on said rods and the walls of said wall elements facing each other. The ring elements are integral with the roller bodies or separate cylindrical rings shrink-fit onto the roller bodies. Each ring element is associated with at least two screw feeders.

Abstract: A machine and process for a web of material employing two side-by-side sets of spaced apart driven disks adapted to rotate respectively in opposite directions about two spaced apart parallel axes, the axes being sufficiently close that peripheral margins of the disks of one set run between the peripheral margins of the disks of the other set in a mated relationship, the sets of disks mutually defining a series of web driving regions spaced apart in a direction parallel with the axes, with successive web driving regions, offset from one another, open channels between said disks providing, with the driving regions, a width-wise continuous, non-linear cross-section corridor through which the web passes, the driving regions adapted to impart to a web led lengthwise into the corridor, crosswise tension in the web, pulling the web about the edges of the disks, the tension enabling the disks to apply forward driving force to the web and retarding means closely disposed to the driving regions located to apply retardi

Abstract: Apparatus for forming elongate laminate into a predetermined configuration having a substantially uniform cross-sectional shape in the axial direction, including a plurality of roller pairs having complementary transverse peripheral profiles, plate members disposed between the roller pairs and the laminate and having a transverse configuration corresponding to the peripheral profiles of the rollers.

Abstract: The present invention is directed to the manufacture of plastic tubing exemplified by corrugated plastic tile and parts related thereto, in which molds for shaping an extrudable plastic material are caused to shuttle linearly forwardly and rearwardly with respect to an extruding source of said plastic material. Sequentially related to linear mold movement is opening and closing mold action, which is correlated to the discharge of plastic material from the extruding source thereof. Provision is also made herein during the course of linear mold movement for parking one or more predetermined molds at a location spaced from the extruding source.

Abstract: A method of perforating a nonwoven web of fibrous fabric by directing the web through a nip defined by first and second moveable members. As the web moves through the nip it is penetrated by a plurality of heated pins projecting from the first member which enter heated apertures formed in the second member. The penetration of the pins causes the fibers of the fabric to separate and enter into the apertures and form openings through the web. The openings are surrounded by dense consolidated rings exhibiting greater hydrophilic properties than the nonperforated surface of the web.

Abstract: A machine and method for longitudinally compressing a web under the influence of driving forces provided at a nip line defined by spaced-apart pairs of matched rotating disks and under the influence of retarding forces provided by sets of retarding fingers inserted in the spaces between the disks.

Abstract: A corrugator for molding externally ribbed and corrugated thermoplastic pipes, including two trains of moldblock halves circulating respectively in two endless paths and cooperating with each other to form a travelling mold for the thermoplastic pipes. The halves of one train are biased in relation to and overlap those of the second train along the travelling mold and are provided with intermeshing elements hooking the halves of the two trains together.

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 single facer comprising a pair of upper and lower corrugating rolls having a corrugation thereon for corrugating a core sheet fed therebetween. The sheet is then pasted at the tops of their corrugations. A liner is fed in different direction and caused to pass together with the pasted sheet between the lower corrugating roll and a pressure roll to be sticked to each other to thereby form a single-sided corrugated sheet. The upper and lower corrugating rolls are supported by separate rotatable frames, and engageable with each other to form a corrugation forming unit. A plurality of corrugation rolls having a different corrugation shape thereon are provided on each of the rotatable frames.

Abstract: An extrusion die for two-ply seamless plastic tubing, includes an extrusion head with a first nozzle provided with a first centering means; a first hollow mandrel placed within said nozzle; an elongate carrier bearing a second mandrel, a second nozzle and a spider in turn supporting a distributor splitting an extrudate. The first nozzle and the distributor define a first annular extrusion orifice for an outer parison of the tubing while the second nozzle and the second mandrel define a second annular extrusion orifice for the inner parison of the tubing. A threaded member longitudinally adjusts said carrier to vary the size of the first extrusion orifice. A coupling means interconnects the carrier and the first mandrel and allows only the axial, without rotation, movement of the carrier. A second centering means mounts the distributor uniformly spaced around the spider.

Abstract: An apparatus performing a filter from a material for a filter element automatically and quickly. The filter made by the present apparatus has a plurality of wavy portions which are provided in such a manner that a plurality of wavy portions forms a circle.The apparatus employs a contracting apparatus for contracting a continuously corrugated strip of material for a filter element in such a manner that a distance between adjacent ridges of the corrugated strip is reduced so that the corrugated strip becomes the wavy portion of the filter. The apparatus also employs a rounding apparatus for rounding the continuously corrugated strip in such a manner that both ends of the strip are connected to each other so that the wavy portions made from the corrugated strip form a circle. The apparatus further employs a shaping apparatus for shaping the rounded continuously corrugated strip so that the rounded strip becomes the filter.

Abstract: One-sided corrugated board machine having at least two pair of corrugated rollers, a lower pair and an upper pair, wherein each pair of lower and upper corrugated rollers are supported on separate lateral, pivotable and fixable bearing brackets. A movable glue-applying device and clamping roller are provided such that they can be moved away from the pivoting path of the corrugated rollers. When it is desired to change the rollers of a single pair, one for another, the glue-applying device and the clamping roller are moved away from the pivoting path and the corrugated rollers are pivoted so as to change each pair of rollers one for another without having to rethread the paper tracks.

Abstract: Apparatus for forming accordion pleats in and about the sidewall of a thin-walled plastic container. Said apparatus comprising a forming station, a gripping and transporting means for introducing unpleated containers to the forming station and for removing the same from the forming station. Hot air means renders the containers malleable at the forming station. A plurality of circumaxially arranged forming plates move radially inwardly to engage the container sidewall and to form accordion pleats therein. Thereafter the plates are retracted radially for the introduction of the next succeeding container. A ring cam is intermittently rotated to operate the forming plates with the forming "dwell" regulated by a small cam.

Abstract: A single facer of the type wherein a core paper sheet is corrugated by means of a pair of upper and lower corrugated rolls and has its crest portions applied with paste, and then a liner introduced from a different direction is pasted on the corrugated core sheet while passing between the lower corrugated roll and a pressure roll to form a single-faced corrugated sheet, is improved in that at least one pair of additional upper and lower corrugated rolls having a different shape of corrugation from first mentioned pair of upper and lower corrugated rolls are supported on a rotatable frame jointly with the first pair of upper and lower corrugated rolls, and structure for rotating the rotatable frame is provided.

Abstract: A single facer comprising plural means for corrugating and pasting sheet medium and a pressure roll, characterized in that each pair of upper and lower corrugating rolls are capable of being moved so that the lower corrugating roll may be brought into contact with the pressure roll.

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: A method and an apparatus for continuously forming embossed sheets having good mechanical properties but no directional property. The apparatus has a pair of temperature-adjustable forming rolls, axial distance regulating devices to control the distance between the axes of the pair of forming rolls and a driving means for rotating the pair of forming rolls, each of the pair of forming rolls being provided with a plurality of ring-shaped blocks having a large number of projections on their circumferential surfaces; and the method comprises the steps of: introducing a sheet into a space between the pair of forming rolls, bringing the sheet into contact with the projections of the forming rolls, where the projections of the pair of forming rolls engage with one another without pressed contact, thereby making the sheet undergo plastic deformation and forming a large number of projections on both sides of the sheet.

Abstract: An apparatus and a method for forming a corrugated sheet from a flat pre-laminated thermoplastic sheet. The flat sheet received between a pair of heated corrugated metal tool sheets with the tool sheets pulled between a pair of stationary tool press plates for forming and cooling the flat sheet into a corrugated sheet.

Abstract: A filter for separating constituent components of fluids includes a plural-layer sheet-like member which is multiply pleated to provide layers of the same or different porosity or to provide structural support layers for pleating a soft or membrane-like filter layer. The multiple layers may be pre-joined or delivered from individual locations to a pneumatic conveyor passage of predetermined cross-section through which the adjacent layers are conveyed by a conveyor gas. The layers are crimped to form pleats by withdrawing the material at a lower linear speed than that at which it is supplied to the passage. Pleating is facilitated by venting the conveyor gas at a passage section of enlarged cross-section. The pleating material is subjected to a hot gas, such as steam, and then cooled by a cooling gas to effect bonding of the layers in the pleated state.

Abstract: Device for striating laterally or diagonally an unvulcanized rubber strip at equal intervals to create air escapes comprises a pleat roll having a plurality of rollers, each of which presses the rubber strip to the pleat roll independently and which have gaps between roller of the first pressing member. A second pressing member includes a plurality of roller, each of which presses the rubber strip to the pleat roll independently and which have the widths greater than the gaps between rollers of the first pressing and the gaps between rollers of the second pressing member narrower than the widths of the rollers of the first pressing member. The second pressing member is positioned to connect the discontinuous striae of the rubber strip in the lateral or diagonal direction, which are striatec with the first pressing member and the ridges of the roll. A transfer device is positioned interpose to the rubber strip between the pleat roll and the first and second members.

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: A single facer for manufacturing single-faced corrugated boards comprising a pair of side frames, each side frame having an interior opening which has been formed so that either or both of upper and lower corrugating rolls may be lowered and taken out through it.

Abstract: A single facer corrugating machine having an elongated fluted roller, a series of fluted roll segments which cooperate with the fluted roller to form a corrugated paper medium, and a series of smooth surfaced pressure roll segments which cooperate with the fluted roller to facilitate application of a liner to the corrugated medium to yield a single faced corrugated paper product. Each of the roll segments is independently supported and can be independently positively located relative to the fluted roller. The roll segments can be nip loaded independently of one another, and each roll segment is independently position adjustable relative to the fluted roller to facilitate phase control across the width of the machine of roll interactions associated with corrugation formation and liner application to control and reduce overall machine noise and vibration.

Abstract: A vertical format corrugator or the like tube producing apparatus has two sets of independent mold sections that circulate on respective paths. The mold sections co-operate to define a travelling mold cavity into which a thermoplastic tube may be extruded to be molded. Fixed tracks extend along the forward and return runs of the mold section paths and are engaged by track followers on the mold sections. The track followers support and guide the mold section, thus enabling the elimination of chains linking the mold sections. In preferred embodiments, transfer mechanisms are provided at the ends of the runs to transfer the mold sections individually from one run to the next. The mold sections may include removable mold blocks, means for automatically changing the configuration of the mold cavity and a system for internal cooling of the mold sections.

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.