US3385747A - Textile machine - Google Patents

Textile machine Download PDF

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Publication number
US3385747A
US3385747A US348469A US34846964A US3385747A US 3385747 A US3385747 A US 3385747A US 348469 A US348469 A US 348469A US 34846964 A US34846964 A US 34846964A US 3385747 A US3385747 A US 3385747A
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US
United States
Prior art keywords
rotor
film
roll
cam
diaper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US348469A
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English (en)
Inventor
Norman E Klein
Charles A Wethingtion
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deering Milliken Research Corp
Milliken Research Corp
Original Assignee
Milliken Research Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Milliken Research Corp filed Critical Milliken Research Corp
Priority to US348469A priority Critical patent/US3385747A/en
Priority to US351793A priority patent/US3383268A/en
Priority to GB8471/65A priority patent/GB1088861A/en
Priority to GB3786/67A priority patent/GB1088864A/en
Priority to BE660514D priority patent/BE660514A/xx
Priority to FR7570A priority patent/FR1431198A/fr
Priority to FR7572A priority patent/FR1430490A/fr
Priority to CH1570366A priority patent/CH478945A/fr
Priority to NL6502622A priority patent/NL6502622A/xx
Priority to SE02686/65A priority patent/SE329750B/xx
Priority to CH291065A priority patent/CH476885A/fr
Priority to US614997A priority patent/US3385493A/en
Application granted granted Critical
Publication of US3385747A publication Critical patent/US3385747A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H35/00—Gearings or mechanisms with other special functional features
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00—Details of garments or of their making
    • A41D27/24—Hems; Seams
    • A41D27/245—Hems; Seams made by welding or gluing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/021—Control or correction devices in association with moving strips
    • B21D43/022—Loop-control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/02—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials transversely
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8226—Cam mechanisms; Wedges; Eccentric mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93441—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the speed being non-constant over time
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1317—Means feeding plural workpieces to be joined
    • Y10T156/1322—Severing before bonding or assembling of parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1317—Means feeding plural workpieces to be joined
    • Y10T156/1343—Cutting indefinite length web after assembly with discrete article
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1712—Indefinite or running length work

Definitions

  • This invention relates generally to methods and apparatus for forming a thermoplastic type selvage in a textile material and more particularly to methods and apparatus for continuously forming from a roll of material such items as diapers, handkerchiefs, etc., which are cut from the roll and the cut edges are automatically sealed with a thermoplastic type selvage to prevent unraveling.
  • Another object of the invention is to provide methods and apparatus to continuously and etficiently seal and cut a textile material wherein registry between the cut and seal action are improved.
  • a still further object of the invention is to provide methods and apparatus to provide increased production of cutting and sealing textile materials which employ a film of sealant material such as polyvinyl choride or the like.
  • a fourth object of the invention is to provide methods and apparatus to seal and cut textile materials which provide a straight and cleanly cut thermoplastic type selvage.
  • Another object of the invention is to provide methods and apparatus to seal and cut textile materials in which a novel timing arrangement is employed to synchronize the movement of a reciprocating element with that of a rotor over a pre-determined angle of movement of the rotor.
  • a still further object of the invention is to provide methods and apparatus to seal and cut textile materials which employ a detection system which will prevent damage to the apparatus upon detection of a flaw in the material being processed.
  • Another object of the invention is to provide methods and apparatus to seal and cut textile materials which control the speed of the textile material being supplied in direct response to the speed of the take-up of such material.
  • a seventh object of the invention is to provide an efiicient and high production diaper machine which evenly and continuously seals and cuts diapers with a thermoplastic type selvage.
  • FIGURE 1 is a schematic drawing of the overall arrangement
  • FIGURE 2 is a schematic arrangement of the drive system for the machine shown in FIGURE 1;
  • FIGURE 3 is a blown up view of the feed roll control cam shown in FIGURE 2;
  • FIGURE 4 is an exploded perspective view of the rotor cage member
  • FIGURE 5 is a perspective end view of the machine shown in FIGURE 1 with parts broken away to show details of the invention
  • FIGURE 6 is a sectional view taken through the upper platen and the rotor-cage assembly to show details of the upper platen and the rotor-cage assembly;
  • FIGURE 7 is a blown up view of the timing chain arrangement shown in FIGURE 5 employed to synchronize the reciprocating movement of the upper platen with the rotating movement of the rotor-cage assembly;
  • FIGURE 8 is a top view of the chain and crank arm shown in FIGURE 6 to illustrate the connection of the timing chain to the crank arm;
  • FIGURE 9 is a perspective schematic view of the film feeding mechanism
  • FIGURE 10 is a perspective view of the seam detection apparatus
  • FIGURE 11 is a top view of the fixed cutting blade shown in FIGURE 5;
  • FIGURE 12 is a graphical representation of the operation of the rotor-cage assembly and the upper platen
  • FIGURES 13-17 are schematic representations of the movement of the upper platen and the rotor-cage assembly to provide a sealed edge strip of textile material
  • FIGURE 18 is a partial circuit diagram of the herein disclosed textile machine.
  • sealed edge diapers are being produced continuously from a roll of material.
  • a polyvinyl chloride film approxi mately /3" in breadth is heat sealed across the whole width of the diaper cloth.
  • the sealed portion of the diaper material is then cut in the center to provide a diaper with approximately a thermoplastic selvage on each end to prevent unraveling.
  • FIGURES 1 and 2 there is illustrated schematically the general arrangement of the preferred form of the diaper machine.
  • Diaper material 1 from a roll of material 2 is delivered to the rotating rotor-cage assembly 3 by top and bottom feed rolls 4 and 5.
  • Suecessively the diaper material 1 from the roll 2 passes under the guide rolls 6 and 7, between the feed rolls 4 and 5, over another guide roll 8, under the dancer roll 9, between the seam detector rolls 10 and 11 (shown in FIGURE 10), and onto the rotor-cage assembly 3.
  • Thermoplastic type film material such as polyvinyl chloride (PVC)
  • PVC polyvinyl chloride
  • the rotating rotorcage assembly rotating in the clockwise direction indicated by an arrow brings the sealed portion of the diaper material to a position where the diaper material 1 is severed in the middle of the seal by the fixed knife blade 14. After passing the blade 14 the severed diaper 174 will fall onto a conveyor 15 where it is conveyed to a position, not shown, for folding and packaging.
  • a main drive motor 16 is provided to drive both the rotor-cage assembly 3 and the cloth nip roll 5.
  • the main drive motor is operably connected to the countershaft 17, suitably supported in the side plates 18 and 19 of the frame 96 of the diaper machine, by a sheave member 20 fixed to the drive motor shaft 21, a belt 22 of suitable construction, and another sheave 23 fixed to the countershaft 17.
  • the rotor-cage assembly 3 is con tinuously rotatably driven from the countershaft 17 through gears 24 and 25 and the rotor shaft 26.
  • Swing arm or upper platen and film support members 27, freely mounted on the rotor shaft 26, are reciprocably driven from the countershaft 17 through chain members 28, stub shafts 111, timing chains 30, and crank arms 31 pinned to the swing arms 27.
  • the cloth feed roll is also driven by the main drive 16 through the countershaft 17.
  • a speed variator 32 Interspaced between the countershaft and the cloth feed roll 5 is a speed variator 32 controlled preferably by a servo motor 33, schematically shown in FIGURES 1 and 2.
  • the speed variator 32 is connected to the countershaft 17 by a timing belt 34 and is connected to the cloth feed roll by a chain member 35.
  • the proper speed of the feed roll is selected to coordinate with the speed of take-up by the rotor-cage assembly. This pre-selected speed of the feed roll 5 is obtained by adjusting the servo motor to provide the proper output speed of the chain member 35.
  • the servo motor 33 and the speed variator can be of many commercially available types.
  • a dancer roll 9 is provided which is riding in the loop portion 36 of the diaper material between the guide roll 8 and the seam detector rolls and 11 (shown in FIGURE 10).
  • Dancer roll 9 is rigidly secured to a pivotally mounted rod member 37 through a support arm 37a, suitably supported below the slack loop 36.
  • a cam member 44 mounted on one end of the rod member 37 is a cam member 44, shown enlarged in FIGURE 3, which pivots with the rod member 37.
  • the cam member is designed to have surfaces 38, 39 and 40 with a constant radius to provide dwell portions. Surfaces 41 and 42 provide the hereinafter described camming action.
  • the slack loop 36 In normal operation when the cloth feed is properly synchronized with the takeup of the rotor-cage assembly 3, the slack loop 36 will assume a position which will position the dancer roll 9 so that the cam follower 43 will ride on the dwell 39.
  • the length of dwell 39 is so selected that minor variations in the cloth speed will cause the cam to rotate back and forth but the cam follower 43 will not cause any change in the setting of the potentiometer 45 since the dwell surface 39 is of a constant radius of curvature.
  • the dwell surface 39 is designed to allow these small variations without affecting the cloth feed because the servo motor 33 will over heat if it is in constant use due to minor variations in cloth feed.
  • the above-described speed control automatically maintains the approximate pre-selected speed ratio between the feed roll 5 and the rotor-cage assembly 3.
  • the cam member 44 is so designed to allow minor variations in the feed ratio without adjustment of the servo motor 33 in order to protect the servo motor employed to control the adjustment of the speed variator 33.
  • the potentiometer can furnish a proportional command signal to a solid state amplifier which in turn would control the speed variator 32, which in this type of arrangement would be a variable speed DC. motor.
  • the same cam, follower, and potentiometer arrangement would be employed to furnish the signal to the solid state amplifier.
  • a conventional edge guide detector is employed to move the dolly 48 which supports the cloth roll 2.
  • the sensing element 49 is positioned to automatically sense the edge of the cloth material 1. If the edge of the material is not properly positioned a signal will be relayed to the control member 50 to move the dolly in one direction or the other.
  • the system employed is pneumatic and the dolly is moved back and forth by a pneumatic piston. Such system is conventional and per se is not part of the herein disclosed invention.
  • FIGURE 4 the rotor-cage assembly 3 and associated cam members are shown in an exploded view for the sake of illustration. Also for the purposes of illustration the drive gear 25 is shown on the opposite end of the shaft 26 when compared with FIGURE 2. It is within the scope of the invention to drive the shaft 26 from either end.
  • Rigidly secured to the shaft 26 is a concentric shaft 51. Rigidly secured to the central shaft 51 is a pair of platens 52 and 53 spaced 180 from each other. Spaced closely adjacent to the platens 52 and 53 are blade members 54 and 55 which are also rigidly secured to the central shaft 51. The platens 52 and 53 are spaced approximately one inch from the cutting edge of the respective blade 54 or 55 with the top of the platen on a smaller radius than the blade.
  • angle members 56 Faced away from and on each side of the platens 52, 53 and the blades 54, 55 are angle members 56, preferably of stainless steel. Each pair of angles supported on one side of the shaft 51 are secured in spaced relation by end supports 57 with strut supports 58 thcrebetween to provide rigidity and to maintain proper spacing.
  • the outer surface 59 of each angle member has holes therein through which pins 60 mounted in pin bars 61, 62, 63 and 64 can move therethrough for reasons hereinafter explained.
  • Disc members 65 and 66 secure the angles 56 together as a composite structure which not only rotates generally with the main shaft 26 but is rotatable relative to the platens 52. 53 and the blades 54, 55.
  • Discs 65 and 66 are mounted on bearings 67 on the shaft 26 with the pin bars 61, 62, 63 and 64 projecting through the elongated openings 68 in the discs.
  • Pin members 69 on both ends of the blade and platen member 70 project through the elongated openings 71 in the discs 65 and 66 and are secured to a bell crank 80.
  • Elongated openings 71 are large enough that the discs with attached angles can move relative to the platen and blade member 70 to the extent dictated by cam 82 hearing against follower 89 and moving bell crank 80.
  • the discs 65, 66 and the angles 56 are secured together as a composite structure by suitable means such as screws 72 which pass through openings 73 in the discs 65 and 66 and screw into openings 74 in the angle end supports 57.
  • a tapped tubular member 75 is provided for each pair of end supports 57 and is placed in registry with the elongated slots '76 in the end supports 57.
  • Suitable means, such as screw members '78, can then be inserted through the elongated openings 79 in the discs 65 and 65, through the elongated slots 76 in the end supports 57, and screwed into the tapped or threaded opening 75!: in the tubu ar member 75 to provide a rigid construction.
  • Elongated openings '79 and elongated slots '76 allow the adjustment of the tubular member 75 inward or outward to provide a particular length of fabric path between lades 54 and 55 via angles 56.
  • Bell crank it mounted at one point 87 via link 87a to the discs 65 and 66 and mounted at another bearing position $8 on pin member as on the blade ad platen member has a follower 89 connected thereto and in operative relation to the fixed advance and retard cam 82 to cause rotation of the disc and angles relative to the blade and platen member 76) at pre-determined intervals.
  • Cam followers 9d and 92 in operative relationship with pin load and unload cams 83 are connected, respectively, to pin bars 62 and 64 to control the radial position of the pins 69 in these res ective pin bars.
  • Cam followers 93 and 94 in operative relationship with pin load and unload cams 8d are connected, respectively, to pin bars 1 and 63 to control the radial position of the pins 60 on these respective pin bars.
  • a screw cam member 93:! is provided for this shaft to maintain the gear 25 in proper position and is screwed onto threaded end portion 99 of shaft 26.
  • a retaining collar member 1%3 is secured by key member 104 to the shaft 2s to retain the cams 160, N1 and 102 in fixed phase relation to shaft 26 and equipment fixed thereon.
  • the cams 1093, 161 and 192 are connected to the collar member M3 by suitable means such as screw member 1&5.
  • Switch members 1%, 107 and 163 are mounted in operative relationship respectively with cams 199, 191 and 132 for reasons set forth hereinafter.
  • the swing arms 27 support the film feed assembly, shown in detail in FIGURE 9, and the upper platen assembly 13.
  • the film feed assembly supplies the thermoplastic film between the diaper and the upper platen at predetermined intervals. Then the upper platen member is actuated to heat seal the thermoplastic material to the diaper material prior to severence. It is therefore imperative that oscillating motion of the swing arms be synchronized with the rotary motion of the rotorcage assembly 3 during a portion of the angle of rotation of the rotor-cage assembly to insure a proper seal.
  • the swing arms 27 are driven by a chain member 30 which is operably associated with the countershaft 17.
  • the chain members 30 are operably connected to Sprockets 169 and 110 which are rotatably carried by stub shafts 111 and 112 supported in end plates 13 and 19.
  • the crank arms 31 are pivotably secured to the swing arms 27 at 113.
  • the other end of the crank arm 31 is secured to the chain member 30 by means of extended pin members 114 and 115 which replace two standard link pins of the chain 39.
  • Pin members 114 and 115 are connected to a bearing member 116 secured Within the opening 117 in the crank arm 31.
  • the swing arms 27 carrying the upper platen assembly 13 and the film feed assembly are geared to make two complete cycles to one complete rotation of the rotor-cage assembly 3 in order to make two diapers for each complete rotation of the rotorcage assembly.
  • Other ratios higher than two to one can be used but the radian angle length of the useful work cycle (length of are upper platen assembly 13 is in exact synchronism with lower platen 52 or 53) becomes shorter.
  • the desired two to one ratio or other ratios, if desired, requires that the length of chain 30 along its pitch line must be exactly equal to the circumference of a circle drawn through the chain pitch line above are member 118 and centering on the center of shaft 26 divided by the desired ratio which in the preferred embodiment is 2.
  • the selected circle must center on the shaft 26 since the rotor-cage assembly 3 also rotates on this center and the theoretical angular velocity of any point on the selected circumference will be the same for the rotor-cage assembly as for the swing arm assembly.
  • the work cycle length will tend to approach 90 as sprockets 109 and 110 are diminished in size.
  • a work cycle length of approximately 60 is easily achieved.
  • the radius of curvature of the top of the slide plate 118 is equal to the radius of curvature used to obtain the above pre-selected circumference less the distance between the bottom of the chain links which slide on the chute and the pitch line of the chain.
  • a hollow rectangular support member 119 Located between and connected to swing arms 27 is a hollow rectangular support member 119. Located within the support member 119 is a plurality of pneumatic piston members 120 located across the width of the upper platen member 13. Descending from each of the piston members 120 is a rod member 121 screwed into a U-shaped bracket 122 which is pinned to flange member 123 welded or otherwise secured to the upper platen member 13.
  • the upper platen member 13 supported below the piston members 120 consists of an elongated hollow tubular member 124, a strip of rubber 125 about a quarter of an inch thick which runs the width of the rectangular tubing member 124 to act as a pressure distributing element, the upper platen, and a pair of L-shaped elongated brackets 126 welded or otherwise secured to the hollow tubular member to secure the upper platen in position.
  • the upper platen consists of two strips of metal 127 and 128 between which an electric resistance heater 129 is embedded.
  • a solenoid actuated four way pneumatic valve 130 is mounted on the rectangular tubular member 119 to supply pneumatic pressure simultaneously to all of the pistons 120 when the seal pressure cam 101 actuates seal pressure cam switch 107 to actuate the solenoid operated valve in order to place the lower plate 129 of the upper platen in sealing relationship with the lower platen, as shown in FIGURE 6.
  • the lower platen is wider than the upper platen to allow for any slight misalignment of the platens as they are brought together to seal the thermoplastic material to the diaper material.
  • the film feed assembly is mounted on the rectangular tubular member 119 and therefore oscillates with the swing arms 27. At the same time the film feed assembly has a portion thereof which is movable with respect to the oscillating swing arms to feed film to a position on the diaper material between the upper and lower platens.
  • the PVC film roll 12 is rotatably secured in a pair of suitable supports 131 connected to the rectangular tubular member 119.
  • the film feed assembly is supported by a bracket member 132 one of which is connected on each end of the rectangular tubular member 119. Pivotally connected to each bracket member 132 is a plate member 133 pivoted at 134.
  • a double acting pneumatic piston member 135 which is actuated from a Signal from the film feed cam 100 and the film feed cam switch 106 which energizes and de-energizes a four way valve (not shown) which controls the air pressure to the pneumatic piston memher 135.
  • the support plate 136 freely mounted on the shaft 137 for the film feed roll 138, the ratchet member 139 rigidly mounted on shaft 137, the spring loaded pawl 140, the single acting pneumatic piston 141, and the bracket piece 133a are moved away from the plate member 133.
  • Bracket piece 133a actually is the top of plate 133, which in FIGURE 9 would be hidden by the support member 132.
  • Piston member 141 receives air from the pneumatic source, not shown, at the same time that the top of piston member 135 receives air from the pneumatic source, not shown.
  • Piston member 141 will act downward against the bias of compression spring 141a to rotate plate 136 counterclockwise to force pawl to engage one of notches of the ratchet 139 to rotate shaft 137 and feed roll 138 in order to advance approximately one-quarter inch of the film material F prior to insertion of such material by air jets 142 between the upper platen 13 and the lower platen 52 on top of the diaper material 1 prior to sealing.
  • Aprons 143 extending across the width of the material being sealed are guided by rolls 144, 145 and 146 supported in the plate member 133 is provided to assist in guiding and tensioning the PVC film material F. Looking at FIGURE 6 the roll 146 is supported in a pivotable member 146a which is pivotally secured to the inside of plate 133 at point 14Gb.
  • the shaft 146c of the roll 146 is carried in the elongated groove 146d and can be moved therein by set screw arrangement 146a to vary the tension of'the PVC film F.
  • Roll 146 is supported at both ends of tubular member 119 in this fashion.
  • Roll member 147 guiding the PVC film F and angle iron member 148 extend between the brackets 133 to provide rigidity and strength to the film feed assembly.
  • the seam detector rolls 10 and 11 are located between the dancer roll 9 and the rotor-cage assembly 3.
  • Roll 10 is an idler roll and roll 11 is a feeler roll pivotally mounted at 156 and 157.
  • Springs 158 can be employed to bias the feeler roll 11 toward the idler roll 10.
  • a pair of micro-switches 159 and 160 are located adjacent the feeler roll support arms 161 and 162 respectively and electrically are connected in parallel so that one or the other or both can actuate the seam detector circuit.
  • the seam detector system is designed to prevent the upper platen, from being actuated to the seal position if the cloth being processed has a seam 154 or other area of unusual thickness therein which may damage the platens if the platens are brought together on the fault.
  • the feeler roll 11 will move away from the idler roll 10 against the bias of the springs 158 and close one or both of the micro-switches 159 and 160.
  • the time delay coil 163 will be energized thereby opening time delay switch 164 thereby de-energizing the circuit to the seal pressure switch 107 and the pneumatic solenoid operated four way valve 130. It is then impossible to supply pneumatic pressure to the pistons 120, assuming that seam detector cam switch 108 is closed, and bring the upper platen down into sealing posit-ion.
  • the timed interval of the time delay switch 164 is sufficient to hold the platen piston circuit open until the upper platen is on the return stroke but is not so long as to interfere with the operation of the next cycle.
  • Seam detector cam 102 is so designed that seam detector cam switch 108 is closed only when it is possible for a seam or a fault to lie in an area of the cloth where it might be contacted by the platens during the sealing operation. Upon sensing a seam or fault which will not be contacted by the platens, closing of either switch 160 or 161 will not energize the time delay switch coil under these conditions because seam detect cam switch 108 will be open.
  • the diaper material 1 after the PVC film has been scaled thereto, is severed at the center of the sealed strip area which will provide two selvages with a thermoplastic seal thereon to prevent unraveling of the material.
  • the fixed blade member 14 is mounted adjacent the rotor-cage assembly 3 to cooperate with blades 54 and 55.
  • the sealed strip area on the diaper material is advanced clockwise from the lower platen 52 or 53 to a position where the knife blade 54 or 55 is at the center of the sealed area.
  • the rotor-cage assembly 3 is then rotated to a position where blade 14 and blade 54 or 55 co-act to sever the material along the whole center length of the sealed area.
  • the material below the knife blade 14 is released onto the conveyor 15 as a diaper with both edges sealed with a PVC film to prevent unraveling.
  • a jet of air can be employed to aid in removing the diaper from the rotor-cage assembly 3.
  • the blade member 14 is supported in the machine frame 96 by a pair of support members 166, one of which is shown in KG. 5, at an angle to achieve a progressive or scissor 9 type of cutting action.
  • the angle of this fixed blade is set approximately 2 to 3 degrees in relation to the axis of rtation of the rotor-cage assembly 3 and the blade 54 and 55.
  • Adjusting screws 167 are provided to generally position the blade adjacent the rotor-cage assembly 3 and final adjusting screws 168 are provided along the whole length of the blade to provide the final adjustment of the blade.
  • Blades 54 and 55 must be parallel to the axis of rotation of the rotor-cage assembly 3 in order to provide a cut at right angles to the fabric selvage. This cut must be at right angles in order to provide a square or rectangular shaped diaper with the sealed strip area on both of the severed ends the same width. Therefore, since it is preferred to have a shearing or scissor action on the material being cut the blade 14 is mounted at an angle of 2 to 3 to the axis of rotation of the rotor-cage assembly 3 to cooperate with the blades 54 and 55 which are parallel to the rotational axis.
  • the blade member 14 can be slanted either right to left or left to right Within the scope of the invention. In our preferred embodiment, FIGURES 5 and 6 the blade member 14 is slanted down right to left.
  • FIGURES 12-17 the operation of the herein disclosed textile machine will be described.
  • the reference letters A-E in FIGURE 12 represent, respectively, the positions of the apparatus shown in FIGURES 1317. It should be kept in mind that the oscillating swing arm 27 and the appartus attached thereto goes through two cycles for every complete rotation of the rotor-cage assembly 3 in order to make two diapers for each complete rotation of the rotor-cage assembly.
  • seal pressure cam on the shaft 26 actuates seal pressure cam switch 1117 to energize the solenoid operated four way pneumatic valve 130 to supply air pressure to pistons 120 causing the upper platen to lower to the position indicated in FIGURES 6 and 14 where contact is made with the lower platen 52 whereby heat and pressure are applied to the PVC film and diaper material therebetween.
  • the sealing operation Will continue for a period equivalent to a 50 rotation of the rotor-cage assembly 3.
  • seal pressure cam M1 on shaft 26 allows seal pressure cam switch 107 to de-energize the solenoid actuated four way pneumatic valve which causes the pneumatic actuated pistons 12%) to raise the upper platen assembly 13 away from the lower platen 52 thereby removing the electric resistanc heater away from the completed seal on the diaper material 1.
  • the film feed cam 1130 actuates the film feed switch 196 to actuate the pneumatic air valve for the pistons and 141 to rotate the film feed assembly on plate 133 counterclockwise into position adjacent the upper platen assembly 13 and rotates plate 136 counterclockwise so that pawl, which was previously cocked, will rotate shaft 137 through ratchet 139 to advance the PVC film F a pre-determined amount in preparation for sealing another section of diaper material.
  • the rotor-cage assembly 3 continues to rotate in the clockwise direction from point 173.
  • the cage advance and retard follower 8d is riding up the cam surface of the cage advance and repositioning cam 82 to cause the end support discs 57 and associated structure through bell crank 8t) and pin members 69 to rotate clockwise with respect to platen member 70 in order to place the blade 54 under the center of the previously completed PVC seal on the diaper material as shown in FIGURE 16.
  • FIGURES l5 and 16 that the swing arms 27, are still on the return stroke, as indicated by the arrows.
  • the blade 14 is mounted on an angle of approximately 2 from the axis of rotation of the rotor-cage assembly 3. Therefore, starting at point D and continuing to point B 10 clockwise from point D the coaction of the blades 54 and 14 severs the diaper material at the center of the previously formed PVC seal.
  • the herein disclosed apparatus provides two diapers for each complete rotation of the rotor-cage assembly 3 so that when pins 60 on pin bars 62 and 63 have just about completed the dofiing of the completed diaper the pin bars 61 and 64, lower platen 53, and blade 55 are moving into sealing and cutting position adjacent the upper platen assembly 13 and the abovedescribed operation repeats itself.
  • Pin load and unload cams 83 and 84 are so designed and related to the pin bars 61-64 that when either pin bars 63 or 64 pass from point E to point 174 the corresponding pin bar 63 or 61 passing from points 175 to 176 will have the pins therein retracted along with the pins 60 in the respective pin bars 62 or 64 in order to dofi the completed diaper. All pins 69 in all the pin bars are placed into operative position by the cams 83 and 84 as the respective pin bar passes through the zone between the reference point 177 and the reference point A.
  • pins in pin bars 62 and 64- are retracted from point 174 until they are rotated from point 174 to a position between point 177 and point A while the pins 60 in the pin bars 61 and 63 are retracted only from reference point 176 until they are rotated to a position between reference point 177 and the reference point A.
  • This unusual control of the pins in the pin bars in conjunction with the synchronization of the swing arms 27 with the rotor-cage assembly provides a method and apparatus which continuously provides a supply of diapers and at the same time provides complete control over the material being sealed.
  • the herein disclosed invention provides continuously a product from a roll of textile material which has the cut edges automatically sealed with a thermoplastic type selvage to prevent unraveling of the cloth. Furthermore, the invention provides a thermoplastic type selvage which is applied in a film form, by a new and improved film feeding arrangement, thereby allowing continuous operation of the machine resulting in increased production rates.
  • the herein disclosed invention also includes a novel arrangement to synchronize the oscillating motion of one member with the rotary motion of another.
  • a novel control device is provided which automatically varies the speed of the supply material so as to produce a constant tension in said material while it is being drawn into the sealing-cutting operation. This control incorporates a delay mechanism which allows minor variations in the material feed without constantly changing the feed drive control.
  • a novel cloth advancing registry system is also provided that is far more exact than seen heretofore when handling slez-stretchy material like gauge or Birdseye diaper cloth.
  • a novel cutting blade arrangement is provided to clearly and evenly sever the processed textile material at the center of the thermoplastic seal to provide two edges which have a thermoplastic type selvage to prevent unraveling.
  • a still further feature of the invention is a seam detecting or flaw detecting control which prevents the action of the heat applying platen if the seam or flaw detected will be contacted by the platen during the sealing operation.
  • a machine comprising: a rotating member having an axis of rotation, a reciprocating member reciprocating about said axis of rotation, and means synchronizing the angular velocity of said rotating member with the angular velocity of said reciprocating member during a portion of the path of travel of said members.
  • said synchronizing means includes chain means for driving said reciprocating member, and a slide means to guide said chain means during a portion of the travel of said chain means.
  • arcuate slide means has a radius of curvature, the center of which coincides with said axis of rotation.
  • a selvage forming machine for a running sheet of web material including a means for feeding a sheet of web material, a mechanism for forming a selvage thereon, said mechanism including means for placing a strip of thermoplastic film material on said web material, and means to apply heat and pressure to the film material on said web material to form a seal thereon
  • said means for placing a strip of film material on said web material comprising: means mounted on said machine to support a roll of thermopastic material, a first support means mounted on said machine, a second support means pivotally connected to said first support means adjacent said means supporting a roll of thermoplastic film material, film advancing means mounted on said second support means, said film advancing means including a means to advance a predetermined length of thermoplastic film material and means connected to said support means to actuate said film advancing means.
  • piston means is connected to said first and said second support means to pivot said second support means into and out of film feeding relation to said means to apply heat and pressure.
  • a selvage forming machine for a running sheet of web material including a means for feeding a sheet of web material, a mechanism for forming a selvage thereon, said mechanism including means for placing a strip of thermoplastic film material on said web material, and means to apply heat and pressure to the film material on said web material to form a seal thereon
  • said means for placing a strip of film material on said web material comprising: means mounted on said machine to support a roll of thermoplastic material, a first support means mounted on said machine, a second support means movably connected to said first support means adjacent said means supporting a roll of thermoplastic film material, film advancing means mounted on said second support means, said film advancing means including a means to advance a predetermined length of thermoplastic film material and means connected to said support means to actuate said film advancing means.
  • piston means is connected to said first and said second support means to move said second support means into and out of film feeding relation to said means to apply heat and pressure.
  • said film advancing means includes a roll means in driving relationship with the thermoplastic film material.
  • said film advancing means further includes ratchet means and pawl means operabiy associated with said roll means to sequentially advance the thermoplastic film material.
  • piston means is connected to said first and said second support means to move said second support means into and out of film feeding relation to said means to apply heat and pressure.
  • said actuating means includes a second piston means to actuate said ratchet and pawl means to advance a strip of film material.
  • said actuating means includes a piston means to actuate said ratchet and pawl means to advance a strip of film material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
US348469A 1964-03-02 1964-03-02 Textile machine Expired - Lifetime US3385747A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US348469A US3385747A (en) 1964-03-02 1964-03-02 Textile machine
US351793A US3383268A (en) 1964-03-02 1964-03-13 Flaw detector
GB3786/67A GB1088864A (en) 1964-03-02 1965-02-26 A selvage forming machine
GB8471/65A GB1088861A (en) 1964-03-02 1965-02-26 Machines for producing sealed-edge articles
FR7570A FR1431198A (fr) 1964-03-02 1965-03-02 Procédé et dispositif pour former des pièces terminées à partir d'une bande d'étoffe
FR7572A FR1430490A (fr) 1964-03-02 1965-03-02 Dispositif détecteur de défauts ou coutures dans une bande d'étoffe alimentant une machine
BE660514D BE660514A (nl) 1964-03-02 1965-03-02
CH1570366A CH478945A (fr) 1964-03-02 1965-03-02 Machine destinée à former une lisière sur une bande d'étoffe en mouvement
NL6502622A NL6502622A (nl) 1964-03-02 1965-03-02
SE02686/65A SE329750B (nl) 1964-03-02 1965-03-02
CH291065A CH476885A (fr) 1964-03-02 1965-03-02 Mécanisme comprenant un organe rotatif et un organe oscillant autour de l'axe de rotation de l'organe rotatif
US614997A US3385493A (en) 1964-03-02 1967-02-09 Apparatus to control the speed of a fabric handling machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US348469A US3385747A (en) 1964-03-02 1964-03-02 Textile machine
US614997A US3385493A (en) 1964-03-02 1967-02-09 Apparatus to control the speed of a fabric handling machine

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Publication Number Publication Date
US3385747A true US3385747A (en) 1968-05-28

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Application Number Title Priority Date Filing Date
US348469A Expired - Lifetime US3385747A (en) 1964-03-02 1964-03-02 Textile machine
US351793A Expired - Lifetime US3383268A (en) 1964-03-02 1964-03-13 Flaw detector
US614997A Expired - Lifetime US3385493A (en) 1964-03-02 1967-02-09 Apparatus to control the speed of a fabric handling machine

Family Applications After (2)

Application Number Title Priority Date Filing Date
US351793A Expired - Lifetime US3383268A (en) 1964-03-02 1964-03-13 Flaw detector
US614997A Expired - Lifetime US3385493A (en) 1964-03-02 1967-02-09 Apparatus to control the speed of a fabric handling machine

Country Status (7)

Country Link
US (3) US3385747A (nl)
BE (1) BE660514A (nl)
CH (2) CH476885A (nl)
FR (2) FR1430490A (nl)
GB (2) GB1088864A (nl)
NL (1) NL6502622A (nl)
SE (1) SE329750B (nl)

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US3607573A (en) * 1969-06-20 1971-09-21 Deering Milliken Res Corp Sealed edge machine
US3607538A (en) * 1969-06-20 1971-09-21 Deering Milliken Res Corp Sealed edge process
US3816215A (en) * 1969-06-19 1974-06-11 Deering Milliken Res Corp Sealed edge machine
US3856599A (en) * 1969-06-19 1974-12-24 Deering Milliken Res Corp Sealed edge cutting method
US4274896A (en) * 1978-10-02 1981-06-23 Windmoller & Holscher Method for making sacks which are open at one end and comprise an outer sack of woven plastics tape fabric
US4525236A (en) * 1982-03-24 1985-06-25 Bama, Spa Device for the insertion of small blocking strips or ribbons for multiple sheet material
US20070234861A1 (en) * 2006-04-05 2007-10-11 Mikkelsen Steen B Method and apparatus for fray-free textile cutting
US20070234862A1 (en) * 2006-04-05 2007-10-11 Mikkelsen Graphic Engineering, Inc. Method and Apparatus for Fray-Free Cutting with Laser Anti-Fray Inducement

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GB1550817A (en) * 1975-04-30 1979-08-22 British Steel Corp Coated products
CH495271A (de) * 1969-02-28 1970-08-31 Weber Paul Ag Vorrichtung zur Aufrechterhaltung eines bestimmten Spannungszustandes in einer zwischen aufeinanderfolgenden Antriebswalzen laufenden Materialbahn
US3613975A (en) * 1969-12-30 1971-10-19 Philip Morris Inc Material transport tension control system and apparatus
US3748414A (en) * 1970-11-20 1973-07-24 Riggs & Lombard Inc Self-calibrating seam detector
GB1388838A (en) * 1971-06-19 1975-03-26 Carding Spec Co Yarn wrap detectors
US3782649A (en) * 1973-01-22 1974-01-01 Cutters Machine Co Inc Tensionless cloth feeding apparatus for cloth spreading machine
US4573618A (en) * 1984-07-18 1986-03-04 N.C.A. Co., Ltd. Apparatus for unrolling and spreading rolled cloth
DE3624994A1 (de) * 1986-07-24 1988-02-04 Schmale Carl Gmbh & Co Kg Verfahren und vorrichtung zum querschneiden, beidseitigen saeumen u. naehen von flachen materialbahnen, insbesondere frotteeware
GB9009143D0 (en) * 1990-04-24 1990-06-20 Bonas Griffith Ltd Bag forming machine
US5170611A (en) * 1990-12-12 1992-12-15 Rapidpak, Inc. Web supply mechanism for an indexing motion packaging machine
TW466284B (en) 1998-01-19 2001-12-01 Asahi Chemical Ind Lint-free wiper

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816215A (en) * 1969-06-19 1974-06-11 Deering Milliken Res Corp Sealed edge machine
US3856599A (en) * 1969-06-19 1974-12-24 Deering Milliken Res Corp Sealed edge cutting method
US3607573A (en) * 1969-06-20 1971-09-21 Deering Milliken Res Corp Sealed edge machine
US3607538A (en) * 1969-06-20 1971-09-21 Deering Milliken Res Corp Sealed edge process
US4274896A (en) * 1978-10-02 1981-06-23 Windmoller & Holscher Method for making sacks which are open at one end and comprise an outer sack of woven plastics tape fabric
US4525236A (en) * 1982-03-24 1985-06-25 Bama, Spa Device for the insertion of small blocking strips or ribbons for multiple sheet material
US20070234861A1 (en) * 2006-04-05 2007-10-11 Mikkelsen Steen B Method and apparatus for fray-free textile cutting
US20070234862A1 (en) * 2006-04-05 2007-10-11 Mikkelsen Graphic Engineering, Inc. Method and Apparatus for Fray-Free Cutting with Laser Anti-Fray Inducement
US7615128B2 (en) 2006-04-05 2009-11-10 Mikkelsen Graphic Engineering, Inc. Method and apparatus for fray-free textile cutting

Also Published As

Publication number Publication date
FR1431198A (fr) 1966-03-11
GB1088864A (en) 1967-10-25
FR1430490A (fr) 1966-03-04
SE329750B (nl) 1970-10-19
BE660514A (nl) 1965-07-01
CH476885A (fr) 1969-08-15
NL6502622A (nl) 1965-09-03
CH478945A (fr) 1969-09-30
US3383268A (en) 1968-05-14
US3385493A (en) 1968-05-28
GB1088861A (en) 1967-10-25

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