US3847045A - Web perforating apparatus - Google Patents

Web perforating apparatus Download PDF

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Publication number
US3847045A
US3847045A US00363937A US36393773A US3847045A US 3847045 A US3847045 A US 3847045A US 00363937 A US00363937 A US 00363937A US 36393773 A US36393773 A US 36393773A US 3847045 A US3847045 A US 3847045A
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US
United States
Prior art keywords
web
perforations
forming
transverse
longitudinal
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Expired - Lifetime
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US00363937A
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English (en)
Inventor
W Willhite
H Strube
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Individual
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Individual
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Publication date
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Priority to US00363937A priority Critical patent/US3847045A/en
Priority to US46228074 priority patent/US3845682A/en
Priority to CA199,772A priority patent/CA1003745A/en
Priority to GB2244474A priority patent/GB1465164A/en
Priority to DE2424573A priority patent/DE2424573A1/de
Priority to SE7406829A priority patent/SE381205B/xx
Priority to NL7406979A priority patent/NL7406979A/xx
Priority to IT23185/74A priority patent/IT1012821B/it
Priority to BE144691A priority patent/BE815474A/xx
Priority to CH712074A priority patent/CH584595A5/xx
Priority to FR7418120A priority patent/FR2230573B1/fr
Priority to JP49059235A priority patent/JPS5035782A/ja
Application granted granted Critical
Publication of US3847045A publication Critical patent/US3847045A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/20—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a fixed member
    • B26D1/205—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a fixed member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • B26D1/385—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B5/00—Clicking, perforating, or cutting leather
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B2700/00—Mechanical treatment or processing of skins, hides or leather in general; Pelt-shearing machines; Making driving belts; Machines for splitting intestines
    • C14B2700/11—Machines or apparatus for cutting or milling leather or hides
    • C14B2700/116—Perforating machines
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0515—During movement of work past flying cutter
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0572—Plural cutting steps effect progressive cut
    • 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
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4696—Plural diverse flying cutters
    • 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
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4798—Segmented disc slitting or slotting tool
    • 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
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4847—With cooperating stationary tool
    • 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
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6476—Including means to move work from one tool station to another
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8752—Tool moves work to and against cooperating tool
    • 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
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9408—Spaced cut forming tool

Definitions

  • the apparatus includes spaced machine direction perforator wheels with coacting anvil wheels,
  • the apparatus is preferably used for cutting perforated areas in aweb which will later be converted into individual diaper topsheets, each of which has a perforated removable area.
  • the perforations are in the form of short cuts. but the corners are preferably formed with elongated slits in order to facilitate removal and separation in the ultimate product.
  • a major object of the invention is the provision of a unique web perforating apparatus.
  • Another object of the invention is the provision of such an apparatus which is capable of producing an essentially rectangular pattern of perforations on a moving web.
  • Still another object of the invention is the provision of an apparatus as above enumerated which will produce rectangularly shaped perforations in continuous side-by-side and properly spaced relationship on a moving web.
  • an apparatus which includes means for continuously supporting a web moving therethrough such that successive operative elements can act thereon.
  • the apparatus includes a mechanism for forming continuous spaced lines of longitudinal perforations in proximity to the side edges of the web and may include additional mechanism for forming at least one elongated longitudinal slit at predetermined intervals coextensive with at least one of the originally formed lines of longitudinal perforations.
  • the apparatus is provided with means for forming transverse perforations at predetermined spaced intervals on the web such that the transverse perforations extend between the longitudinal perforations and may be made such that they include an elongated transverse slit which intersects each elongated longitudinal slit, if any.
  • the web is provided with a succession of substantially rectangular side-by-side perforated areas preferably having at least one slitted corner.
  • FIG. 1 is a plan view of a web of paper or nonwovenmaterial illustrating the manner in which the apparatus of the invention is designed to cut perforations into the web to outline side-by-side rectangular areas.
  • FIG. 2 is a fragmentary side elevation, partially in cross-section, illustrating the major operative elements of the apparatus of the invention.
  • FIG. 3 is a cross-section taken on the, line 33 of FIG. 2 illustrating details of the elements that comprise the machine direction perforator mechanism of the 'apparatus.
  • FIG. 4 is a cross-section taken on the line 4-4 of FIG. 2 illustrating details of the cammed slitter mechanism of the apparatus.
  • FIG. 5 is a cross-section taken on the line 55 of FIG. 2 illustrating details of the transverse perforator mechanism of the apparatus.
  • FIG. 6 is a schematic illustration of the drive elements for the apparatus taken from the side opposite to that illustrated in FIG. 2.
  • FIG. 1 there is illustrated a fragmentary portion of a continuous web 10 which is perforated by the apparatus of the invention.
  • the web 10 may be formed from wet strength tissue paper or non-woven fabric material or,
  • any relatively flexible web material that is capable of being perforated is capable of being perforated.
  • the web is formed from a non-woven fabric of the type usually employed as a topsheet for disposable diapers since the ultimate article manufactured-by the present invention is eventually converted for such use.
  • perforated topsheets of this character reference is made to the commonly owned application of Dale A. Gellert, Ser. No. 313,079, filed Dec. 7, 1972 which is entitled Removable Diaper Topsheet Portion for Disposable of Solid Waste.
  • the web' 10 is provided with longitudinal lines of perforation 11 and 12 along opposite edges, respectively, and transverse lines of perforation l3 and 14.
  • the intersection of the lines of perforations 11, 12 and 13, 14 are provided withlongitudinal slits 15, 16, 17 and 18 and transverse slits 19, 20, 21 and 22.
  • the longitudinal slits 15, l6, l7 and 18 are made at predetermined intervals and are coextensive with the lines of perforation 11 and 12.
  • the transverse slits 19, 20, 21 and 22 at either end of the transverse perforations 13 and 14 intersect the elongated longitudinal slits 15, 16, 17 and 18, respectively.
  • the web 10 is provided with a succession of substantially rectangular side-by-side perforated areas with slitted corners.
  • the web is cut along lines 23 to form successive individual topsheets 25 which are each preferably assembled into a disposable diaper.
  • the purpose of the perforations 11, 12, 13 and 14 and the slits l5, 16, 17, l8, 19, 20, 21 and 22 is to provide a central removable panel 26 in each individual topsheet 25.
  • the web perforating apparatus of this invention is capable of use in conjunction with a disposable diaper converting machine an example of which is illustrated in U.S. Pat. No. 3,607,578 Berg et al.
  • a disposable diaper converting machine an example of which is illustrated in U.S. Pat. No. 3,607,578 Berg et al.
  • various elements of the web perforating apparatus can be driven from the main power source or drive shaft of the diaper converting apparatus. This will become more apparent to those skilled in the art particularly in view of the subsequent description herein.
  • the apparatus as illustrated in FIGS. 2 and 4 is supported by a base 27 forming a portion of the diaper converting apparatus (not illustrated) which in turn is used to support the frame 28 of the web perforating apparatus by suitable means well-known in the art.
  • the frame 28 includes side plates 29 and 30 and suitably arranged cross members 31 (FIGS. 2 and 4) 32, 33 and 34 (FIG. 2) to give it sufficient rigidity.
  • Idler rolls 35 and 36 are journaled for free rotation intermediate the side plates 29 and 30 and a deadplate 37 is supported from the brackets 38 and 39 (FIG. 4).
  • the device includes means for continuously supporting the web 10 as it is moving through the apparatus.
  • the web 10 passes over the idler rolls 35 and 36 and is provided with intermediate support from deadplate 37. Continuous movement is imparted to the web 10 by any suitable mechanism (not shown) for this function such as can, for example, be incorporating in the diaper converting apparatus with which the web perforating apparatus will normally be associated.
  • the apparatus includes means for forming continuous spaced lines of longitudinal perforations along opposite side edges of the web 10.
  • This portion of the apparatus will be referred to as the machine direction perforator. It includes a pair of anvil wheels 40 and 41 secured to the shaft 42 which is journaled in the side plates 29 and 30.
  • the anvil wheels 40 and 41 are preferably formed with hardened outer surfaces, such as case hardened steel, for reasons which will become apparent as the description proceeds.
  • Spring loaded perforator wheels 43 and 44 are journaled for free rotation, respectively, by pairs of spring biased arm members 45, 46 and 47, 48.
  • the arm member pair 47, 48 supporting the perforator wheel 44 (FIG. 2) is pivoted at 49 to the stationary bracket 50.
  • a spring 51 is provided to bear against the members 47, 48 thereby causing the perforator wheel 44 to be biased downwardly against the peripheral surface of the anvil wheel 41.
  • a similarly configured suspension mount is provided for the spring loaded perforator wheel 43.
  • the perforator wheels 43 and 44 each are formed with a plurality of spaced perforating teeth 52 around their periphery.
  • the teeth 52 are provided with relatively sharp cutting edges.
  • the teeth 52 are pressed against the web 10 due to the bias ofthe spring 51.
  • the web 10 has longitudinal lines of perforation 11 and 12 cut thereinto as it passes between the respective pairs of perforator wheels 43, 44 and anvil wheels 40, 41.
  • the apparatus also includes means for forming spaced pairs of elongated longitudinal slits 15, l6, l7 and 18 at predetermined intervals coextensive with said longitudinal lines of perforation 11 and 12.
  • This portion. of the apparatus which is referred to as the cammed slitter is best illustrated in FIGS. 2 and 4 of the drawings.
  • the cammed slitter includes a pair of high speed slitter wheels 53 and 54 secured to the shaft 55 which is journaled in bearings mounted in the brackets 38 and 39.
  • the shaft 55 is continuously driven at high rpm from a motive power source to be hereinafter described.
  • the periphery of the slitter wheels 53 and 54 is somewhatbelow the top surface of the deadplate 37.
  • the deadplate 37 is provided with openings 56 and 57 above each of the slitter wheels 53 and 54, respectively, for purposes which will hereinafter become evident.
  • Rotating members 58 and 59 are secured to the shaft 60 which is journaled in the side plates 29 and 30.
  • the shaft 60 is continuously rotated in timed relation to movement of the web 10 by a source to be hereinafter described.
  • the rotating member 59 is provided with radially projecting lobes 61 and 62, the distal ends of which are provided with a slot 63 as best seen in FIG. 4.
  • a similar pair of radially projecting lobes is secured to the rotating member 58 the lobe 64 being illustrated and it being further understood that a second lobe is also provided on the rotating member 58. Referring to FIG.
  • the lobes 61 and 62 projecting from the rotating member 59 will be aligned with the lobes (one of which is illustrated as lobe 64 in FIG. 4) projecting from the rotating member 58.
  • the lobe 64 is provided with a slot 65 at its distal end, it being understood that the other lobe (not shown) on the rotating member 58 is similarly configured.
  • the slots '63 and 65 in the lobes 61 and 64, respectively, pass beneath the deadplate 37 through the openings 57 and 56, respectively.
  • the periphery of the slitter wheels 53 and 54 projects into the slots 65 and 63, respectively.
  • the high speed slitter wheels 53 and 54 are each provided with a sharp outer knifelike periphery and are continuously driven.
  • the members 58 and 59 are continuously rotated such that the lobes 61 and 62 on the member 59, for example, periodically pass through the opening 57 in timed sequence with the movement of the web 10. This action periodically presses a portion of the web 10 downwardly into engagement with the sharp periphery of the slitter wheel 54 and thereby cuts the spaced elongated longitudinal slits 17 and 18 at predetermined intervals coextensive with the line of perforations 12.
  • the corresponding lobes on the rotating member 58 act similarly to cut longitudinal slits l5 and 16 on the line of perforations 11.
  • the apparatus of the invention also includes means for forming transverse perforations at spaced intervals on the web.
  • the transverse perforations as previously indicated, extend between the longitudinal lines of perforation 11 and 12 and include elongated transverse slits 19, 20, 21 and 22.
  • the transverse perforator is best illustrated in FIGS. 2 and 5. It includes rotating flexing blade knives which periodically strike a stationary flexing blade anvil knife.
  • the flexing blade knives 66 and 67 are suitably supported in the knife roll 68 which is journaled in the side plates 29 and 30 and driven from its projecting shaft 69.
  • the stationary flexing blade knife 70 is secured to the anvil block 71 by support structure secured to the frame 28 in a manner wellknown to those skilled in the art.
  • the knife roll 68 is provided with two flexing blade knives 66 and 67. As a consequence, on each revolution of the knife roll 68, a transverse line of perforations 13 and 14 is cut in the moving web 10. Additionally, it should be noted that the stationary flexing blade knife 70 has its cutting edge formed with a perforating tooth pattern corresponding to the transverse lines of perforations 13, 14 and the transverse slits 19, 20, 21 and 22. The rotating knives 66 and 67 are formed with straight sharp cutting edges and are mounted such that they actually strike the stationary knife 70 to form the desired perforations and slits. However, the flexible nature of these elements allows continuous effective operation without any damage.
  • the drive for the various elements of the apparatus is schematically illustrated in FIG. 6.
  • the main drive shaft 72 is suitably driven from a motive power source which may form a part of the diaper converting machine of which the present apparatus may form a portion thereof.
  • the shaft 42 supporting the anvil wheels 40 and 41 is driven from the main drive shaft 72 by the chain drive 73 through the right angle gear box 74, and the chain drives 75, 76 and 77. As previously indicated, the shaft 42 is driven at such speed that the surfaces of the anvil wheels 40 and 41 move at matched speed to the speed of the web 10.
  • the drive is designed such that the shaft 69 is rotated to give the knife roll 68 a peripheral speed greater than the speed of the web 10.
  • the speed differential can be varied in a range of from about 0% up to 100% when making a commercial range of topsheets for various diaper sizes. In practice, a speed differential of from about 4% to 30% has been found very satisfactory.
  • the slitter wheels 53 and 54 supported on the shaft 55 are rotated at relatively high peripheral speeds by the independent motor 84 which rotates the shaft 55 by means of the chain drive 85.
  • the uncut web A initially passes between the anvil rolls 40, 41 and corresponding spring loaded perforator wheels 43, 44. This causes cutting of the longitudinal lines of perforation 11 and 12 along opposite edges of the web 10. Thereupon the web 10 passes to the cammed slitter section.
  • the lobes projecting from the rotating members 58, 59 cause portions of the web 10 to be pushed through the openings 56 and 57 and against the continuously rotating slitter wheels 53 and 54.
  • the latter action is timed and the longitudinal slits 15, 16, 17 and 18 are cut in proper relationship at predetermined intervals coextensive with the longitudinal lines of perforations 11 and 12.
  • the web is transversely perforated and slitted as it passes over the knife roll 68 by the rotating flexible blade knives 66 and 67 which contact the stationary flexing blade knife 70 in periodic timed sequence.
  • This last step cuts the transverse lines of perforation 13 and 14 as well as the transverse slits 19, 20, 21 and 22.
  • the apparatus has been described in the context of forming a removable panel 26 having intersecting slits at each corner. This is a preferred construction of the web 10 as it will allow a consumer to remove the panel 26 when the individual topsheet 25 is assembled into .a diaper by merely grasping any one of the four corners of the panel 26.
  • the apparatus can be modified so that only one or two or three corners of the panel 26 are slitted. For example, if only two corners of the panel 26 are to be slitted, then one of the two rotating members 58 or 59 and its corresponding slitter wheel 53 or 54 could be eliminated.
  • the cutting edge of the flexible blade 70 would be modified to achieve such a construction.
  • the apparatus may also be operated without the cammed slitter, for example, where slitted corners are not desired or by substituting a second perforator wheel the circumference of which is equal to the width of a topsheet 25 and whose periphery is specially machined to produce any one or more of the longitudinal slits 15, 16, 17 or 18.
  • a second perforator wheel the circumference of which is equal to the width of a topsheet 25 and whose periphery is specially machined to produce any one or more of the longitudinal slits 15, 16, 17 or 18.
  • a web perforating apparatus comprising:
  • transverse perforations at spaced intervals on said web, said transverse perforations extending between said longitudinal perforations and having an elongated transverse slit whereby a succession of substantially rectangular side-by-side perforated areas are formed on said web having at least one slitted corner.
  • a web perforating apparatus as claimed in claim 1 wherein said means for forming continuous spaced lines of longitudinal perforations comprises a pair of continuously rotated spaced anvil wheels, said perforator wheels being biased toward said anvil wheels.
  • a web perforating apparatus as claimed in claim 1 wherein said means for forming transverse perforations comprises a rotating knife roll having a flexible perforating blade extending therefrom, an anvil block supporting a flexible stationary perforating blade, said blades coacting on rotation of said knife roll to cut said transverse perforations in said web extending between the longitudinal perforations.
  • a web perforating apparatus as claimed in claim 1 wherein said means for forming an elongated longitudinal slit comprises a deadplate for supporting said web and having at least one opening therein, a continuously rotating slitter wheel mounted beneath each opening of said deadplate, a rotating member above said slitter wheel, said rotating member having a lobe with a slot at its distal end extending radially therefrom, said lobe periodically pressing said web through said opening in said deadplate, causing it to momentarily contact said slitter wheel.
  • a web perforating apparatus as claimed in claim 2 wherein said means for forming transverse perforations comprises a rotating knife roll having a flexible perforating blade blade, therefrom, an anvil block supporting a flexible stationary perforating balde, said blades coacting on rotation of said knife roll to cut said transverse perforations in said web extending between the longitudinal perforations.
  • a web perforating apparatus as claimed in claim 2 wherein said means for forming an elongated longitudinal slit comprises a deadplate for supporting said web and having at least one opening therein, a continuously rotating slitter wheel mounted beneath each opening of said deadplate, a rotating member above said slitter wheel, said rotating member having a lobe with a slot at its distal end extending radially therefrom, said lobe periodically pressing said web through said opening in said deadplate causing it to momentarily contact said slitter wheel.
  • a web perforating apparatus as claimed in claim 3 wherein said means for forming an elongated longitudinal slit comprises a deadplate for supporting said web and having at least one opening therein, a continuously rotating slitter wheel mounted beneath each opening of said deadplate, a rotating member above said slitter wheel, said rotating member having a lobe with a slot at its distal end extending radially therefrom, said lobe periodically pressing said web through said opening in said deadplate causing it to momentarily contact said slitter wheel.
  • said means for forming an elongated longitudinal slit comprises a deadplate for supporting said web and having at least one opening therein, a continuously rotating slitter wheel mounted beneath each opening of said deadplate, a rotating member above said slitter wheel, said rotating member having a lobe with a slot at its distal end extending radially therefrom, said lobe periodically pressing said web through said opening in said deadplate causing it to momentarily contact said slitter wheel.
  • a method of perforating a web comprising the steps of:
  • transverse perforations at spaced intervals on said web, said transverse perforations extending between said longitudinal perforations and having an elongated transverse slit intersecting each elongated longitudinal slit, forming said elongated transverse slit such that it is substantially greater in length than each individual transverse perforation whereby a succession of substantially rectangular side-byside perforated areas are formed on said web having at least one slitted corner.
  • a method of perforating a web as claimed in claim 9 wherein the step of forming transverse perforations at spaced intervals comprises moving the web between oppositely disposed flexing knife blades, and rotating one of said knife blades on a supporting knife roll while supporting said other knife blade in a stationary anvil block.
  • a method of perforating a web comprising the steps of:
  • transverse perforations at spaced intervals on said web, said transverse perforations extending between said longitudinal perforations and having an elongated transverse slit intersecting each elongated longitudinal slit whereby a succession of sub stantially rectangular side-by-side perforated areas are formed on said web havingat least one slitted corner.
  • a method of perforating a web comprising the steps of:
  • transverse perforations at spaced intervals on said web by moving the web between oppositely disposed flexing knife blades, rotating one of said knife blades on a supporting knife roll while supporting said other knife blade in a stationary anvil block, said transverse perforations extending between said longitudinal perforations and having an elongated transverse slit intersecting each elongated longitudinal slit whereby a succession of substantially rectangular side-by-side perforated areas are formed on said web having at least one slitted corner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)
US00363937A 1973-05-25 1973-05-25 Web perforating apparatus Expired - Lifetime US3847045A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US00363937A US3847045A (en) 1973-05-25 1973-05-25 Web perforating apparatus
US46228074 US3845682A (en) 1973-05-25 1974-04-19 Web perforating apparatus
CA199,772A CA1003745A (en) 1973-05-25 1974-05-14 Web perforating apparatus
GB2244474A GB1465164A (en) 1973-05-25 1974-05-20 Web perforating apparatus
DE2424573A DE2424573A1 (de) 1973-05-25 1974-05-21 Vorrichtung zum perforieren eines bahnfoermigen materials
SE7406829A SE381205B (sv) 1973-05-25 1974-05-22 Sett och apparat att perforera en bana for bildande av en foljd av vesentligen rektangulera perforerade omraden sida vid sida med minst ett slitsat horn
NL7406979A NL7406979A (de) 1973-05-25 1974-05-24
IT23185/74A IT1012821B (it) 1973-05-25 1974-05-24 Apparecchio per la perforazione di nastri
BE144691A BE815474A (fr) 1973-05-25 1974-05-24 Appareil a perforer des bandes continues
CH712074A CH584595A5 (de) 1973-05-25 1974-05-24
FR7418120A FR2230573B1 (de) 1973-05-25 1974-05-24
JP49059235A JPS5035782A (de) 1973-05-25 1974-05-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00363937A US3847045A (en) 1973-05-25 1973-05-25 Web perforating apparatus

Publications (1)

Publication Number Publication Date
US3847045A true US3847045A (en) 1974-11-12

Family

ID=23432360

Family Applications (1)

Application Number Title Priority Date Filing Date
US00363937A Expired - Lifetime US3847045A (en) 1973-05-25 1973-05-25 Web perforating apparatus

Country Status (11)

Country Link
US (1) US3847045A (de)
JP (1) JPS5035782A (de)
BE (1) BE815474A (de)
CA (1) CA1003745A (de)
CH (1) CH584595A5 (de)
DE (1) DE2424573A1 (de)
FR (1) FR2230573B1 (de)
GB (1) GB1465164A (de)
IT (1) IT1012821B (de)
NL (1) NL7406979A (de)
SE (1) SE381205B (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978752A (en) * 1975-12-29 1976-09-07 Meaden Screw Products Company Intermittent perforator wheel
US4085569A (en) * 1974-04-29 1978-04-25 G. D. Societa Per Azioni Device for preparing pieces of wrapping material for use as the inner wrap in hinge lid cigarette packs
WO1982000970A1 (en) * 1980-09-15 1982-04-01 In Line Inc Blava Apparatus for continuously cutting and removing thin trim strips from a printed web
US4359919A (en) * 1979-03-29 1982-11-23 Winkler & Dunnebier Maschinenfabrik Und Eisengiesserei Gmbh & Co. Kg Rotary punch comprising a backup roll bearing on the cutter roll
US4452114A (en) * 1980-09-15 1984-06-05 Blava In-Line, Inc. Apparatus for continuously cutting and removing thin trim strips from a printed web
US4913013A (en) * 1987-04-14 1990-04-03 Mobil Oil Corporation Rotary cutting apparatus
US5129299A (en) * 1988-10-07 1992-07-14 Urschel Laboratories Incorporated Dicing machine
US5814390A (en) * 1995-06-30 1998-09-29 Kimberly-Clark Worldwide, Inc. Creased nonwoven web with stretch and recovery
US6332388B1 (en) * 1998-08-24 2001-12-25 Miyakoshi Printing Machinery Co., Ltd. Arbitrarily positioned longitudinal perforation forming apparatus for form printing machine
US6412378B1 (en) * 1999-06-18 2002-07-02 Bobst Sa Method of cutting/scoring adjacent flat elements and system for performing the method
WO2002100614A1 (en) * 2001-06-11 2002-12-19 Micromec S.N.C. Di Prataiola E Bruschi Apparatus and method for moving a cutting device in a direction parallel to the flow of paper material
US20040231481A1 (en) * 2003-05-23 2004-11-25 Floding Daniel Leonard Apparatus for perforating or slitting heat shrink film
US20050193690A1 (en) * 2003-10-07 2005-09-08 Schoeneck Richard J. Apparatus and method for selective processing of materials with radiant energy
US20060027065A1 (en) * 2004-08-09 2006-02-09 Mario Spatafora Unit for feeding and cutting into lengths a strip of wrapping material
US20060075865A1 (en) * 2004-10-07 2006-04-13 Floding Daniel L Film cutter
US20060075861A1 (en) * 2004-10-07 2006-04-13 Flooding Daniel L Film cutter
US20120237643A1 (en) * 2011-03-17 2012-09-20 Wegner Kenneth E Flexible tubular package for edible product
US20170225817A1 (en) * 2007-03-29 2017-08-10 Hochland Se Cross-cutting device
US9914234B2 (en) 2013-02-28 2018-03-13 Kimberly-Clark Worldwide, Inc. Multilateral cutter
IT201700081301A1 (it) * 2017-07-18 2019-01-18 Tecnau Srl Equipaggiamento e metodo di taglio trasversale per strisce di rifilatura

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Publication number Priority date Publication date Assignee Title
CH649942A5 (de) * 1981-01-09 1985-06-28 Grapha Holding Ag Querperforiermesser.
GB2258630B (en) * 1991-08-10 1995-06-28 Bkh Paper Converters Limited Improvements in and relating to paper handling
DK171435B1 (da) * 1994-11-22 1996-10-28 Svend Carstensens Sliberi Og M Perforeringshjul

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US2870840A (en) * 1957-05-16 1959-01-27 Paper Converting Machine Co Web cutting apparatus
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US3152501A (en) * 1960-12-27 1964-10-13 Nassar Frederick Paper perforating attachment for printing press
US3268136A (en) * 1965-01-14 1966-08-23 Hamilton Tool Co Data card and method of making same

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US3036486A (en) * 1958-03-07 1962-05-29 Simonds Saw & Steel Co Slotting segments with v-shaped cutting portion for corrugated paperboard and the like

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Publication number Priority date Publication date Assignee Title
US2870840A (en) * 1957-05-16 1959-01-27 Paper Converting Machine Co Web cutting apparatus
US3152501A (en) * 1960-12-27 1964-10-13 Nassar Frederick Paper perforating attachment for printing press
DE1133970B (de) * 1961-06-19 1962-07-26 Goebel Gmbh Maschf Herstellung von Perforationslinien veraenderlicher Laenge
US3268136A (en) * 1965-01-14 1966-08-23 Hamilton Tool Co Data card and method of making same

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085569A (en) * 1974-04-29 1978-04-25 G. D. Societa Per Azioni Device for preparing pieces of wrapping material for use as the inner wrap in hinge lid cigarette packs
US3978752A (en) * 1975-12-29 1976-09-07 Meaden Screw Products Company Intermittent perforator wheel
US4359919A (en) * 1979-03-29 1982-11-23 Winkler & Dunnebier Maschinenfabrik Und Eisengiesserei Gmbh & Co. Kg Rotary punch comprising a backup roll bearing on the cutter roll
WO1982000970A1 (en) * 1980-09-15 1982-04-01 In Line Inc Blava Apparatus for continuously cutting and removing thin trim strips from a printed web
US4409870A (en) * 1980-09-15 1983-10-18 Blava In-Line, Inc. Apparatus for continuously cutting and removing thin trim strips from a printed web
US4452114A (en) * 1980-09-15 1984-06-05 Blava In-Line, Inc. Apparatus for continuously cutting and removing thin trim strips from a printed web
US4913013A (en) * 1987-04-14 1990-04-03 Mobil Oil Corporation Rotary cutting apparatus
US5129299A (en) * 1988-10-07 1992-07-14 Urschel Laboratories Incorporated Dicing machine
US5814390A (en) * 1995-06-30 1998-09-29 Kimberly-Clark Worldwide, Inc. Creased nonwoven web with stretch and recovery
US6332388B1 (en) * 1998-08-24 2001-12-25 Miyakoshi Printing Machinery Co., Ltd. Arbitrarily positioned longitudinal perforation forming apparatus for form printing machine
US6412378B1 (en) * 1999-06-18 2002-07-02 Bobst Sa Method of cutting/scoring adjacent flat elements and system for performing the method
AU772091B2 (en) * 1999-06-18 2004-04-08 Bobst Sa Method of cutting/scoring adjacent flat elements and system for performing the method
WO2002100614A1 (en) * 2001-06-11 2002-12-19 Micromec S.N.C. Di Prataiola E Bruschi Apparatus and method for moving a cutting device in a direction parallel to the flow of paper material
US20040231481A1 (en) * 2003-05-23 2004-11-25 Floding Daniel Leonard Apparatus for perforating or slitting heat shrink film
WO2005035207A3 (en) * 2003-05-23 2005-08-04 Douglas Machine Inc Apparatus for perforating or slitting heat shrink film
EP1670620A4 (de) * 2003-10-07 2012-03-28 Douglas Machine Inc Vorrichtung zum perforieren oder schlitzen von wärmeschrumpffolie
US20050193690A1 (en) * 2003-10-07 2005-09-08 Schoeneck Richard J. Apparatus and method for selective processing of materials with radiant energy
EP1670620B2 (de) † 2003-10-07 2022-08-17 Douglas Machine, Inc. Vorrichtung zum perforieren oder schlitzen von wärmeschrumpffolie
EP1670620B1 (de) 2003-10-07 2017-05-10 Douglas Machine, Inc. Vorrichtung zum perforieren oder schlitzen von wärmeschrumpffolie
US7823366B2 (en) 2003-10-07 2010-11-02 Douglas Machine, Inc. Apparatus and method for selective processing of materials with radiant energy
EP1670620A2 (de) * 2003-10-07 2006-06-21 Douglas Machine, Inc. Vorrichtung zum perforieren oder schlitzen von wärmeschrumpffolie
CN100418711C (zh) * 2003-10-07 2008-09-17 道格拉斯机械公司 用于对热收缩膜进行打孔或切割的装置
US20060027065A1 (en) * 2004-08-09 2006-02-09 Mario Spatafora Unit for feeding and cutting into lengths a strip of wrapping material
EP1642835A1 (de) * 2004-08-09 2006-04-05 G.D. Societa' per Azioni Zufuhr-und-Schneideinheit für Umhüllungsstreifen
US7849770B2 (en) 2004-10-07 2010-12-14 Douglas Machine, Inc. Film cutter
US20060075861A1 (en) * 2004-10-07 2006-04-13 Flooding Daniel L Film cutter
US20060075865A1 (en) * 2004-10-07 2006-04-13 Floding Daniel L Film cutter
US10906683B2 (en) * 2007-03-29 2021-02-02 Hochland Se Cross-cutting device
US20170225817A1 (en) * 2007-03-29 2017-08-10 Hochland Se Cross-cutting device
US20120237643A1 (en) * 2011-03-17 2012-09-20 Wegner Kenneth E Flexible tubular package for edible product
US10988293B2 (en) * 2011-03-17 2021-04-27 The Jel Sert Company Flexible tubular package for edible product
US9914234B2 (en) 2013-02-28 2018-03-13 Kimberly-Clark Worldwide, Inc. Multilateral cutter
EP3431236A1 (de) * 2017-07-18 2019-01-23 Tecnau S.R.L. Ausrüstung und verfahren zum transversalen schneiden von trimbändern
IT201700081301A1 (it) * 2017-07-18 2019-01-18 Tecnau Srl Equipaggiamento e metodo di taglio trasversale per strisce di rifilatura
US11241806B2 (en) 2017-07-18 2022-02-08 Tecnau S.R.L. Transversal cutting equipment for trimming strips

Also Published As

Publication number Publication date
CA1003745A (en) 1977-01-18
GB1465164A (en) 1977-02-23
IT1012821B (it) 1977-03-10
FR2230573A1 (de) 1974-12-20
NL7406979A (de) 1974-11-27
FR2230573B1 (de) 1978-01-13
BE815474A (fr) 1974-11-25
JPS5035782A (de) 1975-04-04
SE381205B (sv) 1975-12-01
DE2424573A1 (de) 1974-12-12
CH584595A5 (de) 1977-02-15

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