Abstract: A self cleaning drip irrigation hose comprising an elongated strip of plastic film folded longitudinally to form first and second overlapping longitudinal margins. A first longitudinal bead partially seals the overlapping margin. A second longitudinal bead outboard of the first bead partially seals the overlapping margins. The first and second beads have a repeating longitudinal pattern that forms a flow regulating channel and opposing inlets spaced along the length of the first and second beads. Outlets from the flow regulating channel to the exterior of the hose are spaced from the inlets to create a pressure drop across the flow regulating channel. A third longitudinal bead outboard of the second bead completely seals the overlapping margin. The second and third beads form a water access channel to the inlets in the second bead such that the inlets in the first bead when plugged are back flushed by water flow through the inlets in the second bead.

Abstract: A method of manufacture of a shaped flexible tube container, typically having a square or "D" section tube, from a flexible plastic tube (15) of substantially round cross section, in which longitudinally extending creases (31, 32) are formed in the wall of the tube by a creasing means (16, 17) acting on the external surface of the tube. The creasing means preferably comprise at least air of rollers (16 or 17) and the tube passes between the two rollers.

Abstract: A process produces a tubular body with at least one dividing wall extending across its length and forming longitudinal chambers disposed next to each other. A foil strip is used whereby a dividing-wall strip or a section of dividing-wall strip is cut to length and is fastened at its lateral outer edges on the foil strip or section of the foil strip, with parallel alignment with the foil strip or section of foil strip. The lateral edges of the foil strip or section of foil strip are then joined with each other thereby either directly forming a tubular body or forming an endless tube, from which tubular bodies are then cut to length. The tube is then solidly joined with a tube head having a dividing bridge conforming to the arrangement of the dividing wall in the tubular body. The tube head has a dispensing aperture closable by a closure.

Abstract: The invention pertains to the apparatus and process for shaping and forming of thermal insulation materials around tubes and pipes in a continuous production process wherein the tube or pipe and a long singular strip of insulating material passes linear with the tube or pipe through a shaping die. The shaping die forms the insulating material around the circumference of the tube or pipe without substantial compression and is captured by overlapping coils of helical wound tape, wire or like material.

Abstract: Composite article comprising an injected hollow body or a solid body based on at least one plastic A, reinforced by at least one bundle of continuous reinforcing fibers, the bundle being wound externally at its surface, substantially perpendicular to its axis, as well as by reinforcing fibers dispersed within it, substantially parallel to its axis, and continuous process for manufacturing it.

Abstract: A fabric for use in an architectural covering device includes a plurality of elongated vanes preferably of tubular configuration having a pair of flaps extending longitudinally along the entire length of the vane. A continuous face sheet material has elongated folds at spaced intervals that are secured along the flaps of the vanes so as to pivotally connect the vanes to the face sheet material at predetermined spaced intervals. The fabric is adapted to be supported with an operational system in an architectural opening so that if the vanes are suspended vertically they are slidably movable laterally of the window opening and pivotally movable about vertical longitudinal axes to extend and retract as well as open and close the covering. An apparatus and method for forming the fabric is also disclosed as well as systems for finishing the endmost vanes in the fabric.

Abstract: A high-strength tube fabrication method including the steps of: (a) preparing a polyester yarn gauze, (b) preparing a PVC emulsion, (c) coating the first side of the gauze with a layer of PVC emulsion, (d) steam drying the gauze, (e) coating the second side of the gauze with a layer of PVC emulsion, (e) steam drying the gauze so as to obtain a plastic cloth, (f) baking the plastic cloth to fully dryness, (g) polishing the both sides of the plastic cloth, (h) cutting the polished plastic cloth into strips subject to the size of the tube to be made, (i) sealing each plastic cloth strip into a tube, and (j) rolling up the tube thus obtained into a reel.

Abstract: A process for producing multi-layered tubular bodies, wherein each tubular body has at least one dividing wall extending along its length to form adjacent longitudinal chambers. The process comprises fastening a dividing strip to a foil ribbon in a parallel arrangement to the foil ribbon, and joining the longitudinal edges of the foil ribbon together to form an endless tube. This tube can then be cut to produce multi-layered tubular bodies.

Abstract: A constant-flow drip irrigation tape hose includes a primary flow path communicating water along the length of the hose. A secondary drip-flow path leads from the primary flow path to an emitter site outwardly of the hose. The hose is formed with a pair of variably spaced apart walls at least one of which is formed with a continuously-open channel defining part of the secondary flow path. A second variable-area part of the secondary flow path is defined by radial spacing of the pair of walls from one another. At least one of the pair of walls is responsive to internal water pressure in the primary flow path to open and close the variable-area part of the secondary flow path in response, respectively, to decreasing and increasing water pressure in the hose. A plurality of emitter sites are spaced regularly along a length of the hose.

Abstract: A tube-forming machine and process has a supply for delivering an elongate, folded, plastic web along a path of travel. The web may be clear polyethylene folded treated surface to treated surface. A cutting mechanism is positioned along the path including a hard cylindrical roll and a cutter having a cutting head and means to bias the head toward the roll. A rotatable sealing drum has a cylindrical web engaging surface delineating a further portion of the path. A set of circumferentially spaced flame-emitting nozzles are positioned adjacent the drum surface section. Each of the nozzles includes a tip disposed within the cylinder delineated by said drum surface and has an axis disposed in an imaginary radial plane. Each tip is directed radially upwardly to impinge its flame against portions of a web being fed along the path when such portions project from said drum surface. Each tip axis is at an angle from 90.degree. to 60.degree.

Abstract: A method of forming an improved finger grip at the gripper end of a paperboard tampon tube is disclosed. This gripper end has an outwardly rolled edge produced by applying moisture to the gripper end of the paperboard tube having a diameter of less than about 25 mm, heating a forming tool to about 100.degree. F. to about 350.degree. F., rotating the paperboard tube with respect to the forming tool at a rate of about 50 to 1000 rpm, and contacting the gripper end of the paperboard tube with the forming tool for about 0.2 to about 5 seconds. In this manner, the forming tool rolls the gripper end of the paperboard tube outwardly to form a radiused surface at the outside of the gripper end of the paperboard applicator tube. The resulting tampon applicator is also disclosed.

Abstract: A tube-tape-forming apparatus having a tube-forming base (1, 41) with a half-fold means (5, 46) on a feed end (2, 42), a full-fold means (7, 48) on a cut-off end (3, 43) and a transition-fold means (6, 47) intermediate the half-fold means and the full-fold means. .The half-fold means are guides (8, 11, 14, 15, 49, 52) which fold single-side-adhesion tape (26) in half linearly with nonadhesive sides (30) in contact. The transition-fold means brings opposite sides of folded tape towards each other selectively to form variously loop-folding with overlap of sides of the tape. The full-fold means are guides (19, 21, 23, 71, 88) which press the overlapped sides of the folded tape together in adhesive relationship to form variously circumferential (31) or flattened (32) linear-seam tube tape that can be used in flattened form or hand-inflated to be used in tubular form. The transition-fold means and the guides can be provided with rollers (33, 91).

Abstract: Sleeve intended to be placed around a container, such as a can or the like, in order to constitute an information medium and formed by a body made of a plastic sheet which is shaped in order to fit on the perimeter of the container and capable of taking printing, wherein at least two flap-forming parts (7, 8) are fixed to the sleeve body (6) by a fixing mechanism (5), each by a first edge parallel to the generatrix of the body (6), and extending so as to be able to end up covering all or part of the sleeve body (6), and wherein at least one of the faces of the flap-forming parts is also capable of taking or displaying printing.

Abstract: By providing a multi-layered, self-sealing, adhesive system constructed for being laminated directly to a thermoplastic or elastomeric elongated tube, a highly effective, easily employed, closure system for securely sealing the elongated slit of elongated, thermoplastic or elastomeric tubes is obtained. In the preferred embodiment, the multi-layered, self-adhering, sealing system of this invention is manufactured in a substantially continuous elongated strip and incorporates a laminating film layer and a film support layer. In this way, secure, integral bonded affixation of the sealing system to the elongated tube is attained in a unique cost-effective, highly efficient manufacturing process. In addition, by integrally affixing the laminating film layer and the film support layer along both sides of the elongated slit of the tube, an adhesive engaging surface is provided for assuring secure, leak-free sealed closure of the elongated tube.

Abstract: The present invention is directed towards a method and apparatus for making clear plastic canisters, in which the canisters retain the full clarity of the clear plastic canister sidewall stock and base stock while they are being processed into canisters, the plastic sidewall stock and the base stock may be pre-labeled before being processed into canisters without any subsequent distortion of the label during such processing, and the apparatus and method can be modified to accept differently-sized canister component stock with minimal equipment modification and downtime.

Abstract: A process for making low cost drip irrigation lines comprises molding a drip emitter having an elongated labyrinthine channel formed in the depth of the emitter body. Emitters of other configurations also can be used in the process. A plastic film is extruded and passed through a film die with an air injection tube at one end forming a plastic film bubble. At the bottom of the extruded plastic film bubble a pair of pressure rolls join opposite faces of the bubble to form a continuous unitary extruded plastic film sheet. The emitters are moved in series toward the nip of the pressure rolls and are inserted in sequence with their labyrinthine faces facing toward the hot bubble. The emitters are bonded to the extruded film sheet using the heat of extrusion, and the external sheet forms one face of the labyrinthine channel through each emitter.

Abstract: An extrusion assembly for extrusion of a triple walled (plastic/metal/plastic) pipe includesa first extrusion apparatus, for extruding an inner plastics layer of the pipe, having an extruder with a coaxial outer extrusion sleeve and inner extrusion die,a shaping sleeve surrounding and substantially coaxial with the extruder, which shaping sleeve is capable of shaping a U-section form metallic layer passing through it into a tubular configuration and a welder for welding the metallic layer of tubular configuration to provide a metal tube,a conduit for supplying a pressurized gas internally of the pipe whereby extruded plastics material emerging from the first extrusion apparatus is forced against an internal surface of the metal tube, anda second extrusion apparatus, for extruding an outer plastics layer of the pipe, having a body part and a supply channel within the body part for supplying plastics material,which extrusion assembly has at least one of,(a) an essentially annular section recess in the body part

Abstract: Compositions and methods for manufacturing containers from sheets having a hydraulically settable matrix. Suitable compositions are prepared by mixing together a hydraulic binder, water, and appropriate additives (such as aggregates, fibers, and rheology-modifying agents) which impart predetermined properties so that a sheet formed therefrom has the desired performance criteria. Hydraulically settable sheets are formed from the mixture by extrusion, then calendering the sheets using a set of rollers and then drying the sheets in an accelerated manner to substantially harden the sheets. The resulting hydraulically settable sheets may have properties substantially similar to sheets made from presently used materials like paper, cardboard, polystyrene, or plastic. The sheets can be laminated, corrugated, coated, printed on, scored, perforated, cut, folded, rolled, spiral wound, molded, assembled and seamed to mass produce articles of manufacture from the sheets such as food and beverage containers.

Abstract: An apparatus and method for applying adhesive on opposite edges of a longitudinal slit formed in a tubular body of resilient insulation material is provided. The apparatus includes a conveyor which moves the tubular body along a conveyor path. A feed assembly feeds a pair of tape strips along separate feed paths so that an adhesive applicator located adjacent to each feed path at an application point applies adhesive to a surface of the tape strip as it is fed along the feed path. A wedge-shaped plow is formed from a pair of flat plates which converge at an acute angle toward one another. The flat plates each have a leading edge which directs each tape strip from the feed paths along an exterior surface of one of the plates along lines parallel with the conveyor path.

Abstract: A method for determining a length, especially for determining an overlap length of a wound strip of material, is provided. In order to be able to automatically determine the overlap length it is suggested that the forward end of a strip of material applied to a winding drum is detected by a detector and, simultaneously, the corresponding angular position of the winding drum is measured. After the completion of the winding of the strip of material, its rearward end is detected by the detector and, simultaneously, the corresponding angular position of the winding drum is measured. Subsequently, a difference between the angular positions of the winding drum is used to determine the length of the strip of material.

Abstract: A bag for packing a light-sensitive material is disclosed. The bag has an outermost surface and an innermost surface and is essentially consisting of a material for making the bag which comprises not less than 70% by weight of polyethylene and 1 to 10% by weight of a light shielding material based on the weight of the material, in which a Vicat softening point of the outermost surface is higher by not less than 20.degree. C. than a Vicat softening point of the inner most surface. Further a method for producing a bag is disclosed.

Abstract: A drip irrigation hose of the continuous emitter type in which the outlets from the regulating passage each comprise a single longitudinal slit. By controlling the length of the slits and the flexibility of the film, water drips from the outlets when the hose is pressurized without clogging when the hose is depressurized. The slits are sufficiently long and the film is sufficiently flexible so the water drips from the outlets when the hose is pressurized. The slits are sufficiently short and the film is sufficiently rigid so the outlets close completely when the hose is depressurized. An outlet forming wheel has a knife blade on its periphery. A backing wheel engages the outlet forming wheel to establish a first nip therebetween. The backing wheel has on its periphery a circumferential slot into which the knife blade fits at the first nip. A rib forming wheel has around its periphery impressions that define a desired track pattern for the ribs.

Abstract: A hose is made by continuously transporting a first strip of plastic film through an assembly station. One or more contiguous molten beads are deposited onto a central region of the film. The beads are formed into a flow regulating passage defined by side walls. A second strip of plastic film, which is narrower than the first strip of film, is sealed to the side walls while molten to form a flow regulating passage between the sidewalls and the first and second strips of film. Inlets to the flow regulating passage and outlets from the flow regulating passage are formed at spaced intervals along the hose. The first strip of film is longitudinally folded to overlap the margins and the overlapping margins are sealed to complete the hose.

Abstract: A heating system for joining plastic films which is capable of matching the potential of the laser. The system comprises a burner assembly and a workholder. The burner assembly includes a torch tip with an inner diameter of 0.016 inch which is capable of delivering a hot, concentrated flame onto a narrowly exposed film workpiece at a 15.degree.. The workholder includes a heat-conductive base roll and a plurality of hold-down rolls which expose an edge portion of approximately 0.0625 inch so as to prevent the plastic film from shriveling away from the joint. These features in combination permit the advantages both of high speed manufacture and of a high-quality bead seal.

Abstract: A drip irrigation tape consists of a strip of flexible material having an elongated, indented channel formed along a first side edge, the channel being of serpentine configuration, the strip being folded lengthwise so that the side edges overlap to form a first conduit, and the opposite side edges being joined together at least along spaced seal lines along opposite edges of the channel to define a secondary conduit. Inlets and outlets are provided along the length of the channel. A method for manufacturing the tape includes the steps of forming the indented channel on a mandrel before sealing the overlapping edges of the strip together by heat sealing or ultrasonic welding.

Abstract: Process for the manufacture of a flexible polymeric structure comprising a sealant barrier, consisting of a multilayer film a few microns thick, oriented longitudinally, in a continuous manner, whereby all of the components of said flexible structure are intimately bonded by a final heat treatment. Flexible polymeric structures manufactured according to this process. Application to the fields of the transport of all fluids and protection against external aggressive agents.

Abstract: A pressure sensitive tape tube former designed to configure standard one sided adhesive tape into tubed tape with the pressure sensitive adhesive side of the tape oriented at the outer circumference there on. The tubular profile is established by passing the tape past a profile configurator to cause the tape to transversely form an overlapping spiral cone, and allowing the outer overlapping edges of the tape to merge together and become in mutual adhesive contact beyond said configurator, thereby forming the tubed tape.

Abstract: Process for the manufacture of a flexible tubular structure comprising a sealant barrier, consisting of a monolayer film a few microns thick, oriented longitudinally, in a continuous manner, whereby all of the components of said flexible structure are intimately bonded by a final heat treatment. Flexible tubular structures realized according to this process. Application to the fields of the transport of all fluids and protection against external aggressive agents.

Abstract: A drip irrigation tape consists of a strip of flexible material having an elongated, indented channel formed along a first side edge, the channel being of serpentine configuration, the strip being folded lengthwise so that the side edges overlap to form a first conduit, and the opposite side edges being joined together at least along spaced seal lines along opposite edges of the channel to define a secondary conduit. Inlets and outlets are provided along the length of the channel. A method for manufacturing the tape includes the steps of forming the indented channel on a mandrel before sealing the overlapping edges of the strip together by heat sealing or ultrasonic welding.

Abstract: On the welding arm of a welding machine is mounted a coaxial application pipe with removable transport means and an application nozzle. Into this application pipe is fed a block-shaped hot-melt mass, in the direction opposite the advance direction of the sheet metal tube, guided in direction (V) of the application tube, melted in the area of a narrowing heater, passed through a supply tube to the application nozzle and applied or sprayed as a hot-melt strip to the inside of the longitudinal weld seam of sheet metal tubes.The application of a hot-melt strip is suitable in particular for the protection of the longitudinal seam of a tin-plated can shell.

Abstract: A flexible duct adapted to be suspended from a support and method of making same. The duct comprises a conduit of heat-sealable plastic film having a longitudinally extending fin on the conduit for suspending the conduit. The fin comprises first and second face-to-face layers of heat sealable film. The fin includes spaced apart reinforced regions which are adapted for engagement with fasteners for suspending the conduit. The reinforced regions comprise portions of the first and second layers which are heat-sealed together. According to the method, a duct is made from an elongate tube of flexible heat sealable material. The sidewall of the tube is joined to itself along a longitudinal line to define a first relatively larger tube forming a longitudinally extending conduit, and a second relatively smaller tube forming a longitudinally extending double-walled fin for suspending the duct.

Abstract: A fiber reinforced composite composed of a scrim/mat. The scrim/mat includes a layer of fiber scrim to which is bonded a layer of fiber mat. This product can be formed into a tubular member such as a fuse tube. The tube is made by pultruding the scrim/mat.

Abstract: A multiple chamber hose for drip irrigation and the like, with a primary chamber for fluid flow therethrough and a multiple layer section having a primary layer, a mid layer and a secondary layer, and with a secondary chamber in said mid layer for fluid flow therethrough. The primary layer is positioned between the primary chamber and the mid layer, and the secondary layer is positioned between the mid layer and the exterior. The hose includes an inlet opening for fluid flow from the primary chamber to the secondary chamber and an outlet opening for fluid flow from the secondary chamber to the exterior. The invention also includes methods of making such a hose.

Abstract: A stationary mandrel (1) is wrapped in a separating film (3) at the front, as seen in the draw-off direction (A). A gel coat layer is coated onto the film (3) and partly gelled by means of a heater (12). The gel coat layer is coated with liquid polyester, wrapped in a longitudinally extending glass-fibre fabric (20) in an overlapping manner and wound helically in a glass sliver (21). These layers are hardened by means of a further heater (24,25), so that a structural supporting profile for coating on the following layers is obtained. The mandrel (1) is set off after the further heater (24,25). For coating on the further layers, liquid polyester, a fibre fabric (34) and a helically wound sliver (37) are applied alternately. These layers are fulled and coated with an outer gel coat layer. The polyester is hardened in an oven (50). A grab device (52) draws the section off continuously from the mandrel (1). Finally, the section is cut to length.

Abstract: An apparatus for laminating at least two strips of strip material and forming the laminate into lightweight, thin-walled tubular members that may be used in the construction of non-combustion smoking articles.

Abstract: A flexible duct adapted to be suspended from a support and method of making same. The duct comprises a conduit of heat-sealable plastic film having a longitudinally extending fin on the conduit for suspending the conduit. The fin comprises first and second face-to-face layers of heat sealable film. The fin includes spaced apart reinforced regions which are adapted for engagement with fasteners for suspending the conduit. The reinforced regions comprise portions of the first and second layers which are heat-sealed together. According to the method, a duct is made from an elongate tube of flexible heat sealable material. The sidewall of the tube is joined to itself along a longitudinal line to define a first relatively larger tube forming a longitudinally extending conduit, and a second relatively smaller tube forming a longitudinally extending double-walled fin for suspending the duct.

Abstract: In a high speed method and apparatus for forming inlet and/or outlet ports in drip irrigation hose, the surface of one margin of a continuous length of plastic film is deformed without puncturing at periodic intervals along its length corresponding to the locations of the inlet and/or outlet ports to form protrusions from the film surface. Thereafter, the protrusions are severed from the film to form the ports. The remainder of the hose is made in a conventional fashion. Preferably, the film surface is deformed by directing the film through the nip of pair of rotating wheels. On the surface of one of the wheels is a series of blunt projections sized, shaped and positioned to correspond to the ports being formed. The protrusions are severed by the edge of a knife across which the film is directed.

Abstract: An article is wrapped in a shrink film having a longitudinal seal. The longitudinal seal is formed by swirling hot melt fibers onto a longitudinal edge of the film and bringing longitudinal edges together to form an initial pressure-sensitive seal. The shrink film and hot melt are then subjected to the elevated temperature of shrink oven to shrink the film and to form a more complete bond at the longitudinal seam.

Abstract: A back-up pad is provided over an anvil surface of a back-up plate, and between the anvil surface and a sealing surface of a sealing die, in an apparatus for forming seals between layers of film material. The back-up pad has a slip surface on one side thereof and a spring surface on an opposite side thereof, the slip surface opposing the sealing face of the die so that the layers of film material pass between the sealing die and the back-up pad during seal formation. The spring surface is comprised of a plurality of outwardly extending resilient spring loops that act against the back-up plate during seal formation, the spring loops resiliently urging the layers of film material against the sealing face to effect seal formation between the film layers while cushioning the film layers to prevent damage to the film layers due to drag between layers and the die face.

Abstract: Method in manufacturing a heat insulated tube includes a tube (17) for conducting fluid and a sheath (12) enclosing said tube, a heat insulating material (15) being disposed between the fluid tube and the sheath. The sheath is being extruded in an angle extruder die (10) while the fluid tube and the heat insulating material enclosing said tube are being fed axially through the angle extruder die as the sheath is being extruded around the heat insulating material. Then the sheath (12) extruded from the angle extruder die is kept spaced from the heat insulating material (15) enclosing the fluid tube (17), over an initial length of the axial movement thereof up to chains of chill molds (13) for imparting to the sheath a corrugated shape by forming the sheath against the chains of chill molds under the influence of negative pressure. The invention also relates to a device in extruders having an angle extruder die (10) for the manufacture of the heat insulated tube.

Abstract: An improved apparatus and method for providing uniform fin-type back seals with flexible packaging material for use in conjunction with form-fill-and-seal machines is disclosed which utilizes a moveable tucker plate disposed between the mated edges of the flexible packaging material and the body of the packaging material. When sealing, the tucker plate moves against the body of the packaging material and prevents lateral movement of such material during the sealing operation. The tucker plate is joined to a sealing platen in a manner which maintains a fixed distance between the tucker plate and the sealing platen until a threshold sealing pressure is exceeded.

Abstract: Apparatus for forming a plastics coated metal tube comprising means for forming a continuous strip of metal into a U-shape and a forming sleeve for folding the strip into an overlapping tube. A mandrel is also provided which extends through the forming sleeve and through a locating sleeve. The locating sleeve centralizes the tube as it passes over the mandrel and welding means are provided for welding the overlapping tube as it passes through the locating sleeve. Both the forming sleeve and the locating sleeve are mounted on the mandrel so as to float with the mandrel.

Abstract: Making jacketed pipe using metal strip coated with a plastic coating compatible with the jacket material. After the strip is formed into tube by turning over longitudinal edges of the strip, the jacketing material is then extruded onto the tube under an extrusion pressure insufficient to cause tube collapse. This is conveniently done by the known "tubing" process. Subsequent to the extrusion step, the jacket material is subjected to radial inward pressure also insufficient to cause tube collapse. This pressure reduces the outside diameter of the jacket and presses it against the coating on the tube. The inward pressure step is performed while residual heat from extrusion remains at the inner surface of the jacket to fuse the jacket to the plastic coating. Inward pressure is preferably applied by a polishing die.

Abstract: A bar for electric induction devices is in the form of a lengthwise rolled-up strip of an insulating material, having at least one layer, the figure obtained in the cross-section of this rolled-up strip being a polygon.

Abstract: A tubular member is manufactured by by continuously supplying a plurality of elongate flexible webs while positionally displacing the webs in overlapping relation with side edges thereof arranged in a staircase configuration, progressively bending the webs along a mandrel, bonding the webs with adhesive layers interposed therebetween to form a tubular member, and joining the displaced side edges to complete the tubular member. The webs are supplied in mutually spaced-apart relation under longitudinal tension. A plurality of resilient support plate members are disposed respectively for the webs and arranged to lie along the lower surfaces of the webs transversely thereof. Opposite ends of the support plate members are supported for movement vertically and toward and away from each other. The opposite ends of the support plate members are movable toward each other to curve the support members along about an outer peripheral surface of a mandrel.

Abstract: A process is disclosed for the production of bobbins suitable for use in voice coils. A bobbin tape is gradually rolled into a cylindrical shape around a mandrel having a circular cross-section while feeding the bobbin tape along the longitudinal axis of the mandrel, whereby both longitudinal edges of the bobbin tape are brought into an opposing relationship. Plural shape-retaining tapes are caused to adhere on the thus-rolled bobbin tape at intervals equal to the length of each of the bobbins without covering coil-winding portions, so that both longitudinal edges of the bobbin tape are maintained in the opposing relationship. The resultant bobbin tape is then cut at intervals equal to the length of each of the bobbins from the leading end of the bobbin tape while leaving at least one shape-retaining tape on the side of the trailing end of the bobbin tape. The cutting may also be performed at intervals equal to the total length of plural ones of the bobbins to provide continuous bobbin stocks.

Abstract: A fabric covered metal rail suitable for use as a top or bottom rail in a fabric Venetian blind and method for producing such a rail by first laminating a fabric strip to a metal strip and then roll forming the laminated strip into the rail.

Abstract: Of two edges (14, 16) to be joined together of a multilayer foil, the inner edge (16) is obliquely trimmed in the longitudinal direction prior to the pressing together in such a way that the layer (6) located remote from the surfaces (10, 12) to be pressed together protrudes beyond the other layers. If the two layers (14, 16) are pressed together during the welding operation by means of two tool elements, not shown, then the inner layer (6) of the inner edge (16) overflows so as to form one uninterrupted layer with the inner layer (6) of the outer edge (14). When the foil is used as packaging material, in particular as a tubular liner for a packaging tube, it is assured that the product to be packaged will come into contact only with the inner layer (6), so that an undesirable reaction with one of the other layers is avoided.

Abstract: A method for the production of a composite pipe with at least the inner surface thereof covered with a plastic layer, comprising: forming a coiled metal sheet into a cylinder, during the conveyance of the metal sheet, by a cylindrical inner mold and at least one of a plurality of outer molds lined up in the direction of conveyance of the metal sheet, said outer mold having a housing composed of two separatable parts and being fitted around said inner mold with a fixed space; joining the side edges in the circumferential direction of said cylinder together; and extruding molten resin into a cylindrical shape over the inner surface of the cylinder from the inner mold, resulting in a composite pipe the inner surface of which is covered with a plastic layer.

Abstract: This invention relates to a process of making flat stock fibrous cellulosic food casings containing a low plasticizer level of between about 10 wt. % and about 17 wt. %, including at least about 9 wt. % polyol, both based upon the bone dry weight of cellulose in the casing, This process comprising forming a fibrous web into a tube, annularly extruding viscose onto the tube, passing the viscose coated tube through a regenerating bath, and incorporating water-soluble plasticizer into either or both the resulting cellulosic gel stock fibrous tube and the dried fibrous tube.