Abstract: Provided are a disposable diaper production method and a disposable diaper production device by which cutting positions of respective side pieces can be accurately managed. A partly-finished product is conveyed in a longitudinal direction in a state in which both side portions in the width direction of the cutting position of respective side panel pieces are held for each set of the two side panel pieces when the respective side panel pieces are cut off by a cutting unit. A controller controls driving rates of a cutting motor and a conveying motor to rotate driving blades at a rate faster than the conveying rate of the partly-finished product.

Abstract: A press device includes a base assembly having a base die component configured to form a workpiece and a punch assembly movable relative to the base assembly during a pressing operation. The punch assembly has at least one punch die component pressing the workpiece to form the workpiece. The punch die component includes a main body having a workpiece engagement surface configured to engage the workpiece formed by the base assembly and the punch assembly. The punch die component having a vibration generator operatively coupled to the main body. The vibration generator causes the main body of the die component to vibrate at a high frequency during the pressing operation.

Abstract: A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. The chopper has a backup roll comprising a wheel and a working layer on the outer peripheral surface of the wheel and an engaging blade roll. The outer peripheral surface of the wheel contains spiral grooves or ridges that mate with ridges or grooves on an inner peripheral surface of the working layer such that a worn working surface can be quickly and easily unscrewed from the wheel and a new working surface can be quickly and easily screwed into place, making the job of replacing the working surface faster, easier and less costly than prior art practice.

Abstract: A method and apparatus is provided for cutting an elastomeric laminate that may include a layer of reinforcement cords, into a desired length without cutting through the cords. The method includes the step of cutting through the gum portion of the elastomeric composite material at a desired skive angle, and then opening up the skived cut. Next, the cord reinforcement layer is cut without severing the reinforcement cords. An elastomeric composite strip cut to the desired length is produced and has cut ends. One of the cut ends has the gum portion cut at a desired skive angle adjacent an overhang portion of the reinforcement layer. The opposite end of the elastomeric composite segment also has a skived portion to mate with the skived portion of the first cut end, and a gap in the cord ply to mate with the cord overhang of the first end, resulting in a splice. An improved anvil having independently controlled vacuum zones and adjustable width vacuum zones is also provided, as well as improved cutting mechanisms.

Abstract: An apparatus for perforating a length of pierceable material which includes a first roller, the length of pierceable material being in engagement with and at least partially circumscribing said first roller; and a second roller disposed in close proximity to the first roller. The second roller, which is provided with a plurality of piercing members, is movable from a first position wherein the piercing members are spaced apart from the first roller to a second position wherein selected ones of the piercing members pierce the length of pierceable material. Uniquely, the first roller has a plurality of transversely spaced grooves that receive the extremities of the piercing members when the first roller is in the second position.

Abstract: The device comprises a path for the web material (N) and, along said path, at least one cutting unit (7A). The cutting unit comprises: a plurality of intermediate disk-shaped blades (9A) disposed on one side of the feed path of the material, which can be positioned transversely to the direction of feed and cooperating with a fixed counter-blade (33A) disposed on the opposite side of said path. Also provided are two lateral disk-shaped blades (10A) to cut the trimmings; and a member for transverse positioning of the blades. The two lateral blades each cooperate with a respective movable counter-blade (71A), separate from the fixed counter-blade, which can be positioned transversely to the direction of feed of the web material.

Abstract: A paper cutting device, for cutting multiple sheets of paper stacked in layers on a table, comprises a paper retainer (2) descending from an upper side along a guide and a cutter (3) diagonally ascending from the lower side. A receiving part (18) is mounted on the lower surface of a paper retaining frame (20). The receiving part (18) is formed by joining a base plate (36) with a large elastic modulus such as a metal to a resin receiving plate (37). A slip prevention structure is installed on the junction surfaces of the base plate (36) and the receiving plate (37) to suppress the extension/retraction of the receiving part of the paper retainer so as to prevent wrinkles from occurring in the paper near a blade receiving surface when the paper is cut off.

Abstract: Web processing method and apparatus (30, 300) is provided for high speed, extremely accurate die cutting or lamination operations. Processing station (32,300) includes a vacuum hold down plate (32,308) which receives and holds an image bearing incremental segment of the web. In feed and out feed tension on the web is released while a segment of the web is held by the hold down plate. The hold down plate with a segment of the web thereon is selectively shifted about X, Y, and ? axes as required to bring the image on the web segment into alignment with a web processing component at the processing station.

Abstract: The invention involves a multi-drive tool for use on a fabricating press having a table with multiple stations. Each station can include a mount opening passing through the table. The multi-drive tool can have a bridge member relating to at least two drive members such that a ram stroke of the press simultaneously moves the drive members or components thereof in a direction toward the workpiece. The invention also involves a die shoe adapted for use on a press. A die-mounting recess configured to receive a die is formed in the top of the die shoe. The invention also provides a fabricating press in combination with a multi-drive tool, as well as methods of fabricating a workpiece.

Abstract: A paper cutting machine is provided for cutting a plurality of sheets of paper stacked one upon another on a table, including a paper support (2) that moves down from above along longitudinal beams (19, 19) and a cutter (3) that moves up from below in an oblique direction. The paper support (2) has a rest (18) for receiving a cutting edge of the cutter. The rest (18) is moved in a predetermined pitch whenever the number of strokes of the cutter (3) reaches a predetermined number. Accordingly, even when the cutting edge of the cutter cuts into the rest and becomes deteriorated, the cutter need not be exchanged immediately, the life of the rest can be lengthened and the number of sheets cut before exchange is necessary can be drastically improved.

Abstract: A paper cutter utilizing a lamp to illuminate a cutline scored into a transparent plastic surface located below directly below the paper to be cut. The silhouette of the cutline acts as the guideline for placement of the cutting blade of the paper cutter to thereby create the exact line of cut. A dual blade rotary cutter is also provided in a paper cutter with a toggle arrangement located on the carriage assembly which allows the user of the cutter to selectively engage one or the other of the blades to engage the cutter.

Abstract: A hanger taken from a strip of hangers is positioned on a fastening and cutting anvil (6) displaceable between a bottom position, in which it retracts below the level of the support plate (1) and a top position, in which it projects above the plate. A blade (17), the central part of which forms a bridge beneath which the strip of hangers passes, is fixed to the plate, in contact with the anvil.

Abstract: Apparatus for highly reliably cutting a rubber strip (12) even when reinforcement cords are embedded therein, and for shaping the upper surfaces of the trailing end of a resultant rubber band member (15) and the leading end of the remaining rubber strip (12) to have a slope inclined with a small angle relative to the general plane of the rubber strip (12) or rubber band member (15). An anvil (20) and a press cutter/shaper (39) are arranged opposite to each other, and a cutting blade (38) is gradually inserted into an anvil groove (22), with at least one surface (38a, 38) of the blade (38) pressed against a periphery (22a) of the anvil groove (22). The cutting blade (38) protrudes from the boundary between inclined a pair of shaping surfaces (34, 35) towards the anvil 20, and has a cutting blade angle (F) that is smaller than angle (G) between the inclined shaping surfaces (34, 35).

Abstract: Web processing apparatus (30, 300) is provided for high speed, extremely accurate die cutting or lamination operations. Processing station (32, 300) includes a Vacuum hold down plate (32, 308) which receives and holds an image bearing incremental segment of the web. In feed and out feed tension on the web is released while a segment of the web is held by the hold down plate. The hold down plate with a segment of the web thereon is selectively shifted about X, Y and ? axis as required to bring the image on the web segment into alignment with a web processing component at the processing station.

Abstract: Method and apparatus for highly reliably cutting a rubber strip (12) even when reinforcement cords are embedded therein, and for shaping the upper surfaces of the trailing end of a resultant rubber band member (15) and the leading end of the remaining rubber strip (12) to have a slope inclined with a small angle relative to the general plane of the rubber snip (12) or rubber band member (15). An anvil (20) and a press cutter/shaper (39) are arranged opposite to each other, and a cutting blade (38) is gradually inserted into an anvil groove (22), with at least one surface (38a, 38) of the blade (38) pressed against a periphery (22a) of the anvil groove (22). The cutting blade (38) protrudes from the boundary between inclined a pair of shaping surfaces (34, 35) towards the anvil 20, and has a cutting blade angle (F) that is smaller than angle (G) between the inclined shaping surfaces (34, 35).

Abstract: A web speed metering device to which a moving web is fed at a constant web infeed speed and from which the web periodically exits at a different speed that is correlated with the timing of a downstream operation performed on the moving web. The metering device is a rotatable member that is non-axisymmetric and that has a cross-sectional shape having a centroid that is offset from the axis of rotation of the rotatable member to change the web output speed as the web exits from the metering device. The metering device allows a web to be fed to a downstream cutting device and enables the web output speed to be regulated so that the web as it leaves the metering device can be cut transversely by a non-instantaneous cut that takes place over a predetermined machine-direction distance, such as a chevron-shaped cut.

Abstract: Disclosed a rotary apparatus for severing a web material, particularly the so called “hard-to-cut materials” such as polymers with relatively high elongation and/or high energy required for failure, including polypropylene (PP), NYLON, polyethylene terephthalate (PET), and any combination thereof, provided in a film form or in a non-woven form. The rotary apparatus can include one or more severing tools such as dies and flex blades. The rotary apparatus provides a speed ratio between the linear velocities of the anvil surface and the severing edge of the severing tool.

Abstract: High speed, extremely accurate web or sheet-fed segment die cutting or lamination apparatus (30, 300) has a processing station (32, 300), which receives a sheet or web segment, and is provided with a vacuum hold-down plate (142, 306) for holding initially fed segments (38). The plate is shiftable as necessary along orthogonal X-Y axes in the plane of the segment (38), and/or is rotatable about a &thgr; axis transverse to the segment plane. Plate movement is effected by a series of aligned, translatable eccentric drive units (178-182, 346-350). Segments (38) carry positioning fiducials (44) that are compared with fixed reference indicia (250, 252) in the station (32, 300). The comparison data is used by a controller (254) to generate the plate movement information used in simultaneous operation of the associated plate drive units (178-182, 346-350).

Abstract: Method and apparatus for highly reliably cutting a rubber strip (12) even when reinforcement cords are embedded therein, and for shaping the upper surfaces of the trailing end of a resultant rubber band member (15) and the leading end of the remaining rubber strip (12) to have a slope inclined with a small angle relative to the general plane of the rubber snip (12) or rubber band member (15). An anvil (20) and a press cutter/shaper (39) are arranged opposite to each other, and a cutting blade (38) is gradually inserted into an anvil groove (22), with at least one surface (38a, 38) of the blade (38) pressed against a periphery (22a) of the anvil groove (22). The cutting blade (38) protrudes from the boundary between inclined a pair of shaping surfaces (34, 35) towards the anvil 20, and has a cutting blade angle (F) that is smaller than angle (G) between the inclined shaping surfaces (34, 35).

Abstract: A manual paper cutter comprises a rule, a guide rail disposed on the rule, and a cutting device mounted on the guide rail. The cutting device comprises a housing, a guide seat, and a blade mount. The housing is provided in the interior with a receiving space, a retaining pillar, and a receiving slot. The guide seat is provided with a through slot and a guide slot which is provided with a locating slot corresponding in location to the retaining pillar. The blade mount is disposed in the receiving slot and is provided with a blade opposite in location to the through slot of the guide seat. The retaining pillar is provided with a spring fitted thereover. As the housing is pressed, the blade is actuated to jut out of the through slot of the guide seat.

Abstract: A device for cross cutting material webs includes a cutting-cylinder pair formed of mutually cooperating cylinders having respective cylinder cores and circumferential surfaces formed by exchangeable circumferential elements, the circumferential elements being arranged removably around the respective cylinder cores of the cylinders.

Abstract: A rotary suture cutting apparatus includes a base having an upper resilient layer, and a cutting assembly. The cutting assembly includes a frame and a rotary cutting tool having a disk shaped circular blade. The cutting tool is slidably mounted to the frame and when moved from one end to the other of the frame, cleanly slices suture material clamped between the base and the cutting assembly without brooming, fraying or otherwise disporting the cut suture tip.

Abstract: An apparatus for cutting, including an anvil cylinder which may have a plurality of cut rubbers strips affixed around the anvil cylinder and a cut cylinder which is mounted for rotation about an eccentric axis. Two knife boxes may be mounted on the cut cylinder, each knife box having a knife and cheekwood for securing the knife to the cut cylinder. A paper tape guides the material to be cut between the cut cylinder and the anvil cylinder. When one knife box degrades, a knife sleeve on the cut cylinder can be indexed so that the other knife box takes the place of the degraded knife box. When a cut rubber strip degrades, the anvil cylinder can be indexed so that another cut rubber strip takes the place of the degraded cut rubber strap. Either of these functions can occur while the apparatus is still running. The anvil cylinder can also use a cut rubber sleeve.

Abstract: A single die raising device is arranged on a turret for raising a die used for forming so that such die-raising device does not become an obstruction when the work is delivered. Apparatus is described in which each of a plurality of form dies (5) arranged on a lower turret (2) can be raised. A die-raising device (16) that raises the die (5) from below the lower turret (2) is arranged so as to be utilized in one place, for example, in the punch position (P), of the rotation path (L) of the die (5) by rotation of the lower turret (2). A projecting part (29a) that projects lower than the lower surface of the lower turret (2) is arranged on each die (5). The die raising device (16) comprises a retracting member (17) which is able to retract horizontally and has a horizontal surface (17b) and a slanting surface (17a) which can lift up the projecting part (29a) of the die (5), and an actuator (18).

Abstract: To assure that a tape-shaped package is automatically wound around a reel, a tape winding apparatus includes as essential components a reel driving shaft having a reel fitted thereonto, a tape-shaped package guiding slider for guiding the movement of a tape-shaped package from a pair of pinch rollers to the reel driving shaft, slider driving means for displacing the tape-shaped package guiding slider to each of the tape-shaped package receiving position for receiving the foremost end of the tape-shaped package delivered from the pinch rollers, the tape-shaped package delivering position for delivering the foremost end of the tape-shaped package toward the reel, and the tape-shaped package guiding position located between both the foregoing positions for guiding the movement of the tape-shaped package during a winding operation performed for the tape-shaped package by rotating the reel driving shaft, and tape-shaped package foremost end seizing means disposed on the tape-shaped package guiding slider for enabl

Abstract: A counter-strip for a perforating device in a signature perforating assembly for a printing press is made of a resilient material and has a linearly extending bore. A support is placed in the bore and has a number of openings which will not interfere with the operation of perforating blades that are used to perforate signatures. The counter-strip is positioned in a counter-perforating cylinder and is supplied with compressed air that is used to remove paper dust from the bore.

Abstract: An ultrasonic apparatus and method for cutting a non-planar workpiece. The apparatus includes an anvil having a non-planar surface for closely engaging an underside of the workpiece. An ultrasonic horn has a non-planar cutting surface closely receiving a topside of the workpiece, wherein the cutting surface and the support surface have complementary non-planar shapes. The ultrasonic horn resonates at a predetermined frequency effect cutting of the workpiece. If the workpiece has a heat fusible component, the workpiece can also be seamed.

Abstract: A cutter assembly for food film includes a rigid planar base with a movable metal strip anvil movably positioned thereon. A slidable cutter arm for forward or rearward movement is attached to a rear axle affixed to the base. The assembly, in one embodiment, can be positioned atop a conventional box of rolled food film. Safe, manual cutting of the food film to convenient lengths can be easily accomplished with minimal training and effort. A turret blade allows for convenient blade changing when dulling occurs.

Abstract: An apparatus for separating tape at a cut edge is described in which a bend is formed in the tape and in which a wall portion acts against the cut edge of the tape so that as the tape is drawn to straighten it, there is resilience in an upper layer of the tape which overcomes the adhesive strength between upper and lower layers and causes them to separate at the cut edge of the tape.

Abstract: A tape cutting apparatus is described for cutting off a portion of tape (4) comprising first and second layers (4a,4c) secured one to another by an adhesive layer (4b). The apparatus comprises an anvil (40) and a cutter support member (31) carrying a blade (30), the cutter support member and the anvil being mounted for relative movement to bring the blade into contact with a facing surface of the anvil. The facing surface has a stepped portion (40) over which the tape is bent during cutting such that when the tape is released the first and second layers tend to separate from one another at the cut edge.

Abstract: An improved disc-shaped knife rotary cutter which has a reduced size and is not complicated in structure as a whole, and which require a knife only on the upper side of a traveling sheet. The knife can be used over a long period and paper powder produced as a result of cutting of a sheet by the knife can be removed by a suction box extending over a full width of the sheet. The improved rotary cutter performs cutting by moving a knife edge portion of a rotating disc-shaped knife into a surface of a sheet being successively fed. On the underside of the traveling sheet, a brush consisting of rod-shaped brush elements is fixed on a backing table over the entire region in the lateral widthwise direction of the sheet. A knife edge of the knife is disposed close to a front end portion of the backing table and upon transfer of the knife in the lateral widthwise direction of the sheet the knife is raised to be disengaged from the brush and the sheet and then it is transferred and set in position.

Abstract: The present invention relates to a method and apparatus for producing communication articles such as postcards, envelopes or the like in each of which display surfaces for information or the like are separably bonded with a synthetic resin therebetween by heating for concealing information such as correspondence or a printed display medium and then mailing it. It is an object of the invention to enable easy and smooth separating of a film-containing sheet and accurate insertion of a film in a sheet.

Abstract: A brush mounting structure for a cutting support surface in an automatic cutting machine capable of dismounting a desired damaged brush out of plural brushes mounted on the cutting surface and disposed in parallel on the brush mounting table. The invention comprehends allowing one to replace the removed brush with a new brush, or alternatively, to fill the gap caused by removal of a damaged brush on the brush mounting table by sliding the remaining brushes together and placing the new brush on the end of the existing brush group. In that way, the worn bristles of the used brushes are maintained at a more uniform operational height than were a new brush with longer bristles interposed therebetween.

Abstract: A heated knife has a motor adapted to drive the knife against a cutting block with the web inbetween. The knife body is metal and has a cutting edge with side surfaces at an obtuse angle to each other. The knife is formed with a lengthwise bore which houses a Calrod capable of heating the knife up to about 950.degree. F. The knife body has relatively thin lateral ears spaced from the heater and which receive support bolts from the opposite ends of a driving yoke by which the motor drives the knife. This arrangement reduces the amount of heat withdrawn from the knife.

Abstract: A method for forming microapertures in a thin sheet material where the area of each of the formed apertures generally ranges from about 10 square micrometers to 100,000 square micrometers. The method includes the steps of (1) placing the sheet material on a pattern anvil having a pattern of raised areas wherein the height of the raised areas is greater than the thickness of the sheet material; (2) conveying the sheet material, while placed on the pattern anvil, through an area where a fluid is applied to the sheet material; and (3) subjecting the sheet material to a sufficient amount of ultrasonic vibrations in the area where the fluid is applied to the sheet material to microaperture the sheet material in a pattern generally the same as the pattern of raised areas on the pattern anvil.

Abstract: A skin graft preparation apparatus is disclosed which includes the use of an extruded skin carrier having guide surfaces thereon which mesh with corresponding guide surfaces on one of the rollers of the apparatus. The device includes structure allowing easy removal, replacement and exchange of the cutter mechanism thereof so that cutters of different ratios may easily be interchanged. Springs engaging respective ends of the cutter mechanism allow slight upward movements thereof to accommodate to skin of varying thickness.

Abstract: A method and system for forming an artwork on a sheet material and punching holes therethrough while the sheet material is disposed on a working surface so that the holes are punched in precise registration with the artwork. The method comprises the steps of providing for each hole to be punched a corresponding socket in the working surface, and securing the sheet material on the working surface so as completely to overlap all of the sockets whereupon the artwork is formed on the sheet material in precise registration with a predetermined origin of the working surface. Associated with each of the sockets is a punch and block combination disposed on opposite surfaces of the sheet material, the block being formed of a softer material than the punch and having an operating surface larger than a cutting surface of the punch.

Abstract: A quick change die cutter is provided for permitting interchangeable die elements to be readily inserted and removed without the need for tools. A receiver is provided for carrying the die element which presents a cutting edge thereon, and a lever serves to shift the die element into engagement with the web of sheet material to be cut thereby. A pad of relatively soft material such as synthetic resin is positioned to engage the cutting edge as it passes through and cuts the web, thereby eliminating set-up time necessary to prevent the cutting edge of the die from damage due to excessive vertical travel. The receiver preferably includes a pair of opposed side walls for receiving the die element in the space therebetween, at least one of the side walls including a locking member for inhibiting shifting of the die along the respective side walls and out of alignment with the web to be cut.

Abstract: An improved rotary shear for performing slotting work or cutting work upon a corrugated cardboard web at right angles to its traveling direction for making order change easy and smooth, is disclosed. The rotary shear comprises a knife cylinder having a knife fixedly secured thereto over the nearly entire width of its outer circumferential surface, pressing means divided into a plurality of sections along the widthwise direction of the corrugated cardboard web and constructed in such manner that the respective sections can be individually raised and lowered, and an endless elastic body belt driven to travel at a predetermined timing with respect to the traveling corrugated cardboard web.

Abstract: The invention relates to a plastic strip, which prevents the blade of a paper cutting machine from touching the panel of the work surface. The latter is thus protected from damage. The specific shape of the strip makes it possible to produce the strip of polypropylene or a similar material by means of an extruder without any form of subsequent treatment. The strip is pushed into the groove already present in normal work surface panels. It has almost the same rectangular cross-section as the groove. On each of the two narrow side surfaces (1) of the strip, two longitudinal bulges (3) cause the strip to be somewhat broader than the groove and thus to be squashed together laterally when being pressed in, without the thickness being altered. The deformability necessary for this is achieved by two cavities (2) inside the strip along the narrow side surfaces (1).

Abstract: A stretched strap cable tie tensioning and severing tool includes a means for positioning a cable tie strap between a severance blade and an anvil and means for moving the severance blade completely through the strap and into engagement with the anvil to sever the strap, wherein the anvil is formed of a ductile metallic material and wherein the blade is of a greater hardness than the anvil sufficient to allow the blade to penetrate the anvil to form a groove therein.

Abstract: A cutter for punching a sheet of material having a fixed block disposed so as to face one side of the sheet, a punching blade disposed at the opposite side of the sheet relative to the fixed block, a cutting blade disposed spacedly and along the punching blade, and a transporting roller disposed inside the moving blade. A punched-out portion punched by the punching blade is thereby transported with and separated from a punched-remaining portion cut by the cutting blade.

Abstract: A skin graft preparation apparatus is disclosed which includes the use of an extruded skin carrier having guide surfaces thereon which mesh with corresponding guide surfaces on one of the rollers of the apparatus. The device includes structure allowing easy removal, replacement and exchange of the cutter mechanism thereof so that cutters of different ratios may easily be interchanged. Springs engaging respective ends of the cutter mechanism allow slight upward movements thereof to accommodate to skin of varying thickness.

Abstract: The round baler for agricultural stalk crops comprises a round-bale wrapping device with a netting web, as well as a separation device for severing the netting web. Said device consists of a beating knife bar and an anvil which is formed as a countercutter and stationarily mounted on the frame and whose surface which is acted upon by the beating knife bar is provided with a plurality of parallel spaced-apart recesses.

Abstract: A supporting bed for supporting a stack of sheet material in a cutting machine of the type retaining the material by means of a vacuum applied from below the supporting bed is manufactured from a composite structure of starting material including individual layers of reticulated foam material separated by at least one layer of a hot melt adhesive web. The composite structure is compressed under heat and pressure so as to be permanently reduced to approximately 10-35% of its initial thickness. The degree of compression, the temperature and compression time, and the porosity of the retriculated polyurethane foam starting material are selected to provide particular airflow and firmness characteristics for the finished supporting bed.

Abstract: A supporting bed for supporting a stack of sheet material in a cutting machine of the type retaining the material by means of a vacuum applied from below the supporting bed is manufactured from a sheet of reticulated polyurethane foam material which has been compressed under heat and pressure so as to be permanently reduced to approximately 10-35% of its initial thickness. The degree of compression, the temperature and compression time, and the porosity of the reticulated polyurethane foam starting material are selected to provide particular airflow and firmness characteristics for the finished supporting bed. In a preferred embodiment of the invention, the starting material is a reticulated grafted polyether foam having a porosity of 30 pores per inch and a sheet thickness of 5 inches. The sheet of material is compressed to a thickness of one inch and retained under pressure for 10 minutes at a temperature of about 400.degree. F.

Abstract: A punch system for rigid and brittle plastic sheet materials such as polycarbonates comprising a punch body mounted in a carrier board and having an upwardly projecting head portion which defines the shape of the hole to be punched, a ring of high durometer urethane mounted on the punch head to serve as a stabilizer and stripper and a disk of high durometer urethane mounted on the under surface of the press platen directly opposite the punch to receive the punch head and the slug of punched material during the punching operation. The punch is used in combination with a steel rule die but can be used either with other punches or alone.

Abstract: A device and method for cutting labels from a strip of heat meltable material comprises a frame, a die plate mounted for resilient movement on the frame and a punch mounted for movement toward and away from the die plate. The punch carries a cutting edge which cooperates with a die surface of the die plate to cut a label. A reciprocating device includes a spring loaded plunger which moves the die plate with its cutting edge into contact with the die surface of the die plate. The die plate is spring mounted to the frame so that excess movement of the punch toward the die plate is absorbed by the springs of the die plate. Any additional excess movement is absorbed by the spring loaded plunger. The die plate may also be provided with a hole conforming substantially to the outer contour of the label. The edge follows the contour of the hole but it is dimensioned slightly larger than the hole so that a margin of die surface remains around the hole against which the cutting edge operates.

Abstract: A bed knife that acts together with a cutting blade moved past it, particularly for granulating plastic strands, consisting of individual aligned sections of the same type that are fastened to a supporting beam and whose knife edge consists of a cutter material. Each section consists essentially of ceramic cutter material and extends over the areas of feed and delivery of the material to be cut of the cut material. The section is provided with a cutout running in the direction of the bed knife that is aligned with the cutouts of all of the sections and changes into an outer surface of the section as a throat in comparison with the corresponding dimension of the cutout, with the cutouts containing a continuous bar extending through several sections. The bar presses the section against the supporting beam by means of screws passing through the throat that penetrate into the bar, with sections being connected to one another positively by the bar.

Abstract: In order to stress relieve exposed portions of plastic welds, and thereby reduce susceptibility of such welds to solvent-induced crazing and cracking, the welded parts are formed with flanges extending outwardly therefrom. These flanges are at least partially joined during welding, their adjoining surfaces providing at least a portion of the welded joint. After welding, the flanges are compressed in a direction transverse to their adjoining welded surfaces, the compression being of sufficient magnitude to exceed the yield strength of the flanges, thereby relieving stresses in the exposed portion of the welds. The flanges may be sheared, as by a blade which provides both transverse compressive forces and compressive forces in the direction of the adjoining welded surfaces. The flanges may be sheared through, so as to enable the sheared off end to be removed, or the shearing may penetrate only through the weld zone, providing a notch, but leaving the flanges in place.