Abstract: A method is provided for applying segments of sheet material to articles by adhering leading and trailing ends of the label segments to the articles. The method further includes forming a plurality of perforations in the label segments in the vicinity of the ends as the segments are formed. The perforations allow access to solvent to dissolve or loosen the adhesive and facilitate subsequent removal of the label. The perforations can be formed in a spaced relation along a length of a web of sheet material. The web of sheet material is then cut into sheets along a line the locates the perforations at the trailing end of one segment and the leading end of another segment.

Abstract: Apparatus for bonding an insulating material to a metal strip having a conveyor for moving a strip of insulting material along a path of travel and a mechanism for placing perforations in the strip and cutting the strip into sections of predetermined length. The conveyor has raised registration studs that pass through the perforations. A metal strip that also contains perforations is brought into moving contact with the section with its perforation being registered on said studs and a heat curable bonding material is introduced between the metal strip and the insulation sections. A second conveyor is then moved into pressure contact with the moving sections and metal strip registered on the first conveyor and heat is applied to cure the bonding material.

Abstract: Method and apparatus for producing a card product including a sheet with at least one cut-out and a card which is disposed in the cut-out of the sheet, wherein the sheet and the card are held together by at least one adhesive strip which is coated on one side with contact adhesive.

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: There is provided an inflatable cushion filling machine for forming inflated packaging cushions from a roll of tubular thermoplastic material. The machine includes a film supply section and a cushion forming section. The cushion forming section includes means for delivering the tubular material through the cushion forming section; means for applying tension to the web of tubular material while air is being introduced into the tubular material. Means are provided for introducing air into the area between the tension means to fill the cushion. When filled, a sealing band, displaced transversely across the inflated tubular thermoplastic material, seals the lower end to form the top of one cushion and the bottom of the next cushion. Prior to forming the cushion, the walls of the tubular material separate from each other by the residual air from the filling operation of the previous cushion. A perforation knife may be provided to separate each cushion from the next succeeding cushion.

Abstract: The invention relates to a method and an apparatus for the production of a plate with depressions or apertures which is coated on at least one side. Plates of this kind are employed, for example, as passage-containing plates in hydraulic blocks for ABS/ASR/VDC systems, the depressions or apertures serving as passages or holes and the coating being a seal. In this invention the depressions or apertures are formed in an uncoated plate and then the plate is coated. As a result, the life of the machining tools is extended, the machining tolerances become smaller and the rate of machining can be increased.

Abstract: A laminator is provided for registering and laminating one or more web or sheet laminae on a web substrate, wherein each lamina has defined, successive areas and indicia provided in predetermined positions relative to the defined areas. The laminator includes feed rollers for feeding a web substrate through the laminator along a path of travel, and an additional feed mechanism for feeding a web or sheets to a drum forming a part of the laminator. The drum is shiftable toward and away from the web substrate between an engaged position in which the drum engages the substrate, and a disengaged position in which the drum is removed from contact with the substrate. A registration system successively registers the web or each sheet on the drum with the substrate, with the defined area of the web or sheet in a desired predetermined relationship to one of the defined areas of the substrate as successive defined areas are brought into a laminating position.

Abstract: The present invention is provided with an automatic manufacturing method of a switch sheet comprising a concave face switch and an apparatus thereof.A refuse removing tape 7 is stuck on a lower surface of a film separator 4 so that an adhesive layer thereof may fit it before a first punch device 14 forms first holes in the film separator 4. Then, a processing tape 5 is stuck on an upper surface of the film separator 4 so that an adhesive layer of the processing tape may fit it before a second punch device 15 punches the processing tape 5 in a setting shape at the same time while forming second holes through the processing tape 5, the film separator 4 and the refuse removing tape 7. After that, the punched processing tape is wound to be stripped when pulling out the film separator 4 and the refuse removing tape 7 on which the processing tape 5 in a setting shape is stuck.

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

Abstract: A splicing gauge connects a film to a leader with high reliability. A film container support is provided at one end of a leader supporting surface of a splicing table. A fixed blade and a movable blade are provided between the container support and the leader supporting surface. A film pulled out of a film container is cut by moving the movable blade toward the fixed blade. A leader placed on the leader supporting surface is positioned relative to the cut edge of the film. A splicing tape is stuck on both the leader and the film. The leader is then turned over by 180.degree. about the film container to support it on a backside splicing table provided at one end of the container support. Another splicing tape is put on the backsides of the leader and the film.

Abstract: For the connection of the sheets of a multi-sheet printed product (14), such as magazines, brochures and the like, the sheets are adhesively connected together point-wise by the introduction of an adhesive into perforations formed in them. During this, the adhesive applied to the outer side of the penetration and drilling needles (20) is transferred onto the sheets over the whole length of the perforations simultaneously with the formation of the perforations by means of these needles (20) and/or on retraction of the needles (20).

Abstract: An apparatus and a method are disclosed for manufacturing a laminated product. The method includes the steps of punching out components from a plate with a punch and a die and accommodating the punched components in a component accommodating cylindrical member, emitting a laser beam with a laser beam emitting device to a portion between adjacent components. The components are laminated, one on the other, in the component accommodating cylindrical member. The laser beam passes through a beam passage hole formed in the peripheral surface of the component accommodating cylindrical member. The beam passage hole is located through a predetermined rotational angle range of the component accommodating cylindrical member so as to weld the components to manufacture the laminated product. Also, the die and the component accommodating cylindrical member are rotated by a predetermined angle during the welding operation.

Abstract: Dies are used in forming a pack of self-opening plastic T-shirt bags for use with a bagging rack. Each plastic bag in the pack of bags has a mouth tab portion between its two upwardly extending handles, which are at the sides of the mouth of the T-shirt bags. The mouth tab portion is located on the front and rear walls in the mouth region of the plastic bags. The mouth tab portion has an aperture for receiving a retaining projection of a bagging rack. Frangible pressure bonding is formed along the perimeter of the mouth tab aperture. Flapless handle apertures are also formed in the handles, with frangible pressure bonds formed along their perimeter edges. Due to the frangible bonding formed between adjacent bags, as a frontmost bag is removed from the pack of bags on the bagging rack, the next bag in the pack of bags will automatically self-open into a open position for loading with merchandise.

Abstract: A combined hole puncher and reinforcer is provided with a punch control mechanism for detecting the presence of a flat sheet of material in registration with the punching device so as to provide a mechanical interlock for disabling the punching device in the absence of such a flat sheet in registration therewith, unless the adhesive tape feed mechanism is disabled. Also, a tape retainer or cover is hinged for rotation relative a mounting base and carries with it a depression finger and an idler roller. This not only provides clear access to the tape cavity, and enhances tractional engagement of the tape upon closure of the cover, but also avoids the necessity for threading the tape beneath an idler roller. The tape feed mechanism employs no gears, but utilizes a single ratchet wheel and pawl to advance the tape along its longitudinal path into registration with the punch and press assembly.

Abstract: A splicer bed has a leader support on a top thereof. An opening is provided in one end of the leader support. A knife mounting base is arranged to project from the opening and is provided at one end with a cartridge holder. The knife mounting base has a leader positioning head provided on the other end thereof for determining the position of a leader. A stationary knife is mounted to the leader positioning head. A movable knife is mounted for pivotal movement to the stationary knife. A film holddown plate is pivotably mounted to the knife mounting base. The knife mounting base is provided with a pair of punches which are arranged slidably and can be lowered by the film holddown plate. Before the leading portion of a film is drawn out from a film cartridge loaded in the cartridge holder is held under the film holddown plate, the downward movement of the film holddown plate causes the punches to cut two notches in both side edges of the film.

Abstract: A pouch producing machine for producing protective pouches has a feeding device, a gluing device, a glue provider and a cutting-forming device. A sheet of pouch has an upper sheet, a lower sheet, a middle bar and two side bars. The already combined sheet of pouches, after being processed by the machine, becomes an individual pouch having its three sides sealed by the middle bar and the side bars.

Abstract: In a method of fastening an attachment member (1) in a prefabricated borehole (2) in a wooden component (B), the inside surface of the borehole is provided with a profiled surface (2a) by a threadformer (4) which compacts the inside surface of the borehole (2). The borehole (2) is filled with a hardenable mass before the attachment member is inserted into the borehole.

Abstract: A process and apparatus for providing microperforations in a zippered film useful for manufacturing reclosable zippered produce bags including(a) providing a web of thermoplastic film with zipper profile members on at least one side of the web, the zipper profile members spaced apart on the web forming a central web area between the profiles;(b) feeding the web between the nip of a cylinder having a plurality of heated pins and a pressure roller such that a plurality of microholes are formed in the central web area between the zipper profile members; and(c) maintaining the web in feeding alignment between the pin cylinder and the pressure roller such that uniform sized microholes are perforated in the web area between the profile members.

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: It is the object of the present invention to provide a condom application strip attaching system capable of automatically attaching a condom application strip having a slit adapted to accept a semen-storing receptacle within a condom. A mandrel to be covered with a condom is vertically attached on the outer margin of a rotating turntable which is indexed to stop at predetermined positions for predetermined times. A manipulating arm support is arranged inside the turntable corresponding to the mandrel. A first condom unrolling device, a second condom unrolling device, a condom application strip manufacturing device, a pressing device, a pair of flat spatulas, a first condom rolling device, a second condom rolling device, and a condom removing device are arranged in sequence outside and along the turntable to effect the entwining of a condom application strip within a condom.

Abstract: An improved method for forming tray, boat, tray, boat, and/or clamshell type, paperboard, cartons that have horizontal main wall panels and side wall panels, with corner flaps, joined to the main wall panels and extending therefrom and adhesively secured to each other. The cartons are formed from rolls or sheets of paperboard wherein the cutting, stripping, gluing, and forming operations are performed in a completely inline operation.

Abstract: Tabbed or indexed sheets typically for use in ring binders or other stationery applications are produced from a web of sheet material by means of forming an aperture in the sheet material and inserting through the aperture a length of reinforcing material. The length of reinforcing material is secured to the opposed faces of the sheet material and the individual sheet separated from the remainder of the web of sheet material by cutting to form a trailing edge and a leading edge for the sheet. In cutting the sheet material to form the leading edge of the sheet, a tab or indexed portion of the reinforcing material is obtained at the leading edge.

Abstract: Invention discloses a heated die to form long lived aperatures in upper region of plastic wrapped packages; said die featuring improved construction providing focused unidirectional heat flow to avoid package failure leading to product deterioration and package failure and disengagement with display hangers; said heat control effected by micro control of flow of energizing electricity.

Abstract: A "green" sheet manufacturing method and apparatus contemplates perforating the "green" sheet with through-holes as it is calendared, rolled or extruded by rollers. To this end, the rollers are each machined with punches of a length one-half the thickness of the "green" sheet and that mate with punches on the other. Any flash or diaphragm obtaining in the through-holes are removed by subsequently exposing the "green" sheet to new mechanisms providing fluid pressure or vibration, or spiking. The bosses or punches may be supplemented with enlargements and other bosses providing for pads and counterholes and grooves in the "green" sheet. The through-holes may be shaped to have a smaller diameter interiorly than at the outer edges to lock in place solder or other conductive media squeegeed into them. The locking action may be enhanced by slightly off-setting bosses or mating punches to produce through-holes whose top and bottom halves are slightly off-set.

Abstract: The present invention relates to a method and hardware for bonding together nds of a sealing strip. The method of the present invention comprises the steps of cutting a slot in both a first end and a second end of a sealing strip, inserting an attachment strip having a plurality of engaging members into the slot cut into the first end, applying adhesive to the second end of the sealing strip, and placing the two ends of the sealing strip into an abutting relationship by inserting the attachment strip into the slot in the second end and sliding the ends together. The hardware used to effect the method includes an alignment guide having a substantially C-shaped channel for receiving the ends of the sealing strip to be joined together. The alignment guide has an end cap associated therewith having one or more slots for receiving a cutting tool for cutting slots in the ends of the sealing strip. The hardware further includes an attachment strip which is used to join the ends of the sealing strip together.

Abstract: A method and apparatus for continuously forming a laminated tubular body, disclosing the joining of opposite longitudinal edges of a strip of sheet material (5) to form a tubular body, extruding a hollow plastics lining member (1) within the body, expanding the hollow lining member within the tubular body to form a substantially continuous lining, pressure means (66, 67, 71, 72) for pressing the inner lining into sealing engagement with said inner surface, and cutting means (16) for cutting the continuously formed laminated tubular body into preselected lengths.

Abstract: A process for providing microperforations in a zippered film useful for manufacturing reclosable zippered produce bags including the steps of(a) providing a web of thermoplastic film with zipper profile members on at least one side of the web, the zipper profile members spaced apart on the web forming a central web area between the profiles;(b) feeding the web between the nip of a cylinder having a plurality of heated pins and a pressure roller such that a plurality of microholes are formed in the central web area between the zipper profile members; and(c) maintaining the web in feeding alignment between the pin cylinder and the pressure roller such that uniform sized microholes are perforated in the web area between the profile members.

Abstract: A method of producing a textile product has the steps of applying an adhesive coating to a first surface of a backing material having a first and second surface; passing a fluid towards the backing material to form a plurality of spaces through the adhesive and the backing material; and adhering the backing material to a textile fabric.

Abstract: A method and apparatus for producing internally apertured pressure-sensitive labels adhered to a non-apertured liner begins with a label web adhered to a first liner. The internal aperture shapes are cut through the web only and not through the liner, forming aperture slugs separate from the web. The first liner is then removed from the web, and the separate aperture slugs adhere to and are removed with the liner. Next, the web, with apertures cut out, is adhered to a second liner and the label peripheries, in registry with the apertures, are cut through the web only and not through the liner, forming labels separate from the web. Finally, the web is removed from the second liner, leaving individually internally apertured labels on the non-apertured second liner.

Abstract: A padded element of a motor-vehicle seat is made applying a cover onto a padding body by pressing with simultaneous application of steam. The covering fabric is provided on a lower mould with the back side thereof facing upwardly and the padding body is pressed against this back side by an upper mould. The upper mould includes a plurality of cannulae for steam injection, which project downwardly from the upper mould and are introduced through the padding body and have their steam outlet lower ends located inside this body adjacent to the surface thereof.

Abstract: There is disclosed an apparatus and method for forming a honeycomb core. In particular, the apparatus comprises a compressible array of heater rods that are interleaved with layers of a formable material. Upon compressing the array, the formable material conforms to the shape of the heater rods. Through the application of heat and pressure, the different layers of the formable material are caused to bind to each other. The bound layers thereby form a honeycomb core, which is then removed from the forming apparatus. Also disclosed herein are methods of making honeycomb core using the apparatus, as well as methods of determining precise curing conditions for the making of honeycomb core, by sensing the temperature and pressure transmitted to the formable materials during the curing process.

Abstract: To correctly splice two films to each other in the end-to-end relationship, a film splicer includes as essential components a base platform, a film guide mechanism arranged on the base platform, an arm member adapted to be turnably depressed against the upper surface of the film guide mechanism by actuating a handle for a cutter holder, an adhesive tape feeding mechanism, and a pair of tape cutters arranged on the lower surface of the arm member for cutting an adhesive tape in a film splicing operation region corresponding to the width of each film to be spliced. The adhesive tape feeding mechanism is composed of an adhesive tape unrolling member, a holding member for temporarily holding the foremost end part of the unrolled adhesive film, and an opposing pair of adhesive tape folding-back members for folding back the unrolled adhesive tape at a predetermined position in front of the film splicing operation region.

Abstract: A method and apparatus for producing one or more individual stacks of superimposed, secured together, expandable tubular strips forming an expandable honeycomb panel. The strips coated with adhesive are advanced sequentially to the inlet of a stacking chamber having an elevated floor with a longitudinally extending slot of a length to receive each strip and which is narrower than the width of the strips to be delivered thereto. The strip so delivered is pushed up through the narrower slot and against the strip just previously delivered to the chamber, to adhere it to the latter strip. The chamber has a weight bar to exert a downward force on the stack of strips to provide good adherence between the strips.

Abstract: An apparatus for utilizing a wheel rim tape around a wheel rim. The apparatus has a table. A first device is used for holding the spoked wheel on the table. A strap is induced manually about the wheel rim, thereby forming a loop. A second device is used for shearing the loop from the strap, with two terminal portions of the loop overlapping with each other. The second device is used for adhering the first and second terminal portions of the loop.

Abstract: A method and apparatus for facilitating a splicer operator's pre-splice preparation and positioning of the leading end of a new web for splicing, in a splicer, to the running web of an expiring roll. The webs both include regular and longitudinally spaced registration marks and identical, repeating and longitudinally spaced patterns.A movable table is used for the initial, off line, pre-splice web preparations. It includes a fixture for guiding the leading end of the new web along a longitudinal path and a hole puncher adjacent to the path. An optical instrument is also mounted on the table and is movable transversely across the path. The optical instrument is spaced longitudinally a preselected distance from the hole puncher. The operator moves the new web along and the optical instrument across the path until a registration mark is aligned beneath the optical instrument. The operator then punches holes in the new web using the hole puncher.

Abstract: An automatic apparatus for drilling dowel holes in a workpiece and then inserting dowels in the dowel holes is disclosed. The apparatus has a moveable carriage that moves along the side edge of the workpiece. A drilling tool and a dowel inserting tool are attached to the moveable carriage. A programable controller controls the movement of the carriage and the operation of the drilling tool and the dowel injecting tool. The controller is programmed to move the carriage to a plurality of positions for drilling dowel holes in the workpiece. The number of dowel holes, the spacing of the dowel holes and the depth of the dowel holes are entered into a control panel to program the controller. The controller is then activated to move the carriage and operate the dowel drilling tool and dowel inserting tool.

Abstract: A novel method and apparatus are provided for consolidating and perforating multilayer laminates by a combination of vibratory motion and impacting pressure applied by a special compacting tool preparatory to final cure.

Abstract: An arrangement for holding together a package of boards to be used in the manufacture of printed circuits by applying glue to an edge of the package or by applying glue into holes formed in the boards.

Abstract: The invention relates to a process and to apparatus for the defined dispensing and application to a substrate surface of sections having equal and/or unequal lengths of a tape, particularly of a pressure-sensitive or thermally activatable adhesive tape, to a substrate surface. To this end, the tape is continuously adhesively affixed to the surface. Starting at an initial placement position; before the leading edge (in the direction of application) of the tape section is secured, it is severed partly, leaving at least one web of material, at a predetermined distance from the trailing edge thereof by a specially configured cutting mechanism. After the subsequent adhesive placement of the entire tape section on said surface, the tape is separated at said at least one web of material by utilizing a braking effect as the tape or the tape dispensing and applying apparatus continues to move relative to the surface.

Abstract: Disclosed herein is a sheet perforating apparatus comprising a sheet transfer mechanism; a perforating section for boring at least one filing hole in a sheet being transferred; and a sticking section for sticking a reinforcing pad on the sheet about the periphery of the filing hole. The perforating section comprises a punch cutter for boring the filing hole in the sheet transferred.

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: 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: A method for making a roller sleeve assembly comprising providing a metal sleeve, forming apertures extending radially through the sleeve, bonding a flexible sleeve to the exterior of the metal sleeve and permitting the flexible sleeve material to fill certain of the apertures. The invention further contemplates a method for making a roller assembly comprising sliding the above-described sleeve assembly onto a hub comprising a circular wall with ribs extending normally therefrom, and providing locking plates and cooperative pins for locking the sleeve assembly onto the hub, with the pins disposed partly in the locking plates and partly in other of the sleeve assembly apertures.

Abstract: The invention relates to a process and to apparatus for the defined dispensing and application to a substrate surface of sections having equal and/or unequal lengths of a tape, particularly of a pressure-sensitive or thermally activatable adhesive tape, to a substrate surface. To this end, the tape is continuously adhesively affixed to the surface. Starting at an initial placement position; before the leading edge (in the direction of application) of the tape section is secured, it is severed partly, leaving at least one web of material, at a predetermined distance from the trailing edge thereof by a specially configured cutting mechanism. After the subsequent adhesive placement of the entire tape section on said surface, the tape is separated at said at least one web of material by utilizing a braking effect as the tape or the tape dispensing and applying apparatus continues to move relative to the surface.

Abstract: In a L-sealer for heat-sealing center-folded thermoplastic film, wherein a pair of relatively movable clamping jaws grip and heat seal the facing film webs along an L-shaped seal line, a series of perforating pins are mounted to one clamping jaw to perforate the film webs closely adjacent the seal line. The perforations allow escape of air when the film is subsequently shrunk, the close spacing of the perforations to the seal line insuring that the perforations are disposed at the side of the packaged article when the film is shrunk to minimize entry of dirt and the like.

Abstract: A method and apparatus for applying a strip to the planar contour-prepared edge of a lens. The beginning of an endless strip is connected to the edge of a lens. A transverse perforation is introduced into the strip at a distance from the strip beginning that corresponds to the circumference of the lens. The lens is then rotated, and the strip is restrained, at a location thereof behind the perforation when viewed in the direction of movement of the strip, in such a way that the strip tears at the perforation to form a new strip beginning for the next lens. This new strip beginning is pressed against, and connected to, the edge of the next lens. A register is provided for determining the circumference of a lens.

Abstract: An apparatus for modifying and joining a sheet of foam to a non-elastic component that includes slitting the foam to form a plurality of openings, forming the slit foam into a U shaped slack condition and joining surfaces of the foam sheet to a non-elastic component adhering the two together.

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: An absorbent dressing comprising, a transparent backing sheet having a relatively high water vapor permeability, a front sheet having a pressure sensitive adhesive on a front surface thereof for facing a wound with the front sheet and adhesive having a plurality of apertures extending therethrough, and an absorbent layer intermediate the front sheet and backing sheet having a plurality of openings in register with the apertures of the front sheet, with the openings of the layer being at least as large as the apertures of the front sheet.

Abstract: This invention relates to a perforator for paper perforations, more particularly to a perforator with accessories for feeding adhesive strip to be cut and pushed to attach on a paper to be perforated, and the paper together with the attachments are further perforated so that a perforated paper with reinforcing attachments can be obtained.