US3876359A - Device for wet-forming cardboard sheets into corrugated cardboard plates - Google Patents

Device for wet-forming cardboard sheets into corrugated cardboard plates Download PDF

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Publication number
US3876359A
US3876359A US367710A US36771073A US3876359A US 3876359 A US3876359 A US 3876359A US 367710 A US367710 A US 367710A US 36771073 A US36771073 A US 36771073A US 3876359 A US3876359 A US 3876359A
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US
United States
Prior art keywords
cardboard
corrugating
chain
cardboard sheets
corrugated
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
US367710A
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English (en)
Inventor
Alfons Karl Herr
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.)
ELDA AG
Original Assignee
ELDA AG
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
Priority claimed from DE2227824A external-priority patent/DE2227824C3/de
Application filed by ELDA AG filed Critical ELDA AG
Application granted granted Critical
Publication of US3876359A publication Critical patent/US3876359A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/30—Tools secured to endless chains, e.g. toothed belts; combined with uniting the corrugated web to flat webs
    • B31F1/305—Tools secured to endless chains, e.g. toothed belts; combined with uniting the corrugated web to flat webs with sets of interengaging tools each secured to endless chains

Definitions

  • ABSTRACT A device for wet-forming cardboard sheets into corrugated cardboard plates which includes a charging device for charging cardboard sheets onto conveying means which feed the cardboard sheets in wet condition to a non-heated corrugating device for corrugating the received cardboard sheets into corrugated cardboard plates and discharges the same to drying means through which they are passed by a roller equipped supporting chain conveyor.
  • the present invention relates to a device for wet deforming cardboard sheets withdrawn from a board machine, to corrugated cardboard plates.
  • Cardboard plates are according to the state of the art prior to the present invention manufactured in such a way that dried cardboard sheets withdrawn from a board machine are humidified again and are then conveyed to a corrugating device.
  • This corrugating device consists primarily of a pair of rollers which in the manner of gears mesh with each other and are heated to a temperature of from approximately 300 C. to 350 c. This pair of rollers burn, so to speak, the corrugation into the material under the influence of pressure and great heat.
  • This corrugating device may also be employed for deforming a cardboard strip withdrawn from a Fourdrinier machine in which instance, however, as a rule a plurality of such roller pairs have to be employed.
  • an object of the present invention further to improve the method of my above mentioned copending application in order to eliminate the necessity that a plurality of heated deforming tools have to be arranged one behind the other.
  • the deforming device for deforming cardboard sheets withdrawn from a board machine, to corrugated cardboard plates, is characterized primarily by arranging directly adjacent to the board machine and one after another, a transverse runoff (Quer-Ablauf) known per se, a non-heated corrugating device, and a passage drier with roller supporting belt.
  • the spacing of the rollers of the roller supporting belt corresponds to the distance between the individual corrugations.
  • the corrugating device consists primarily of the roller supporting belt which passes through the passage drier, and a form roller belt engaging the roller supporting belt. Both belts are formed of tubes of the same diameter which tubes are linked on both sides to the elements of the driving chains, and the tubes have at least the length of one cardboard sheet.
  • This corrugating device at the same time forms the inlet into the passage drier so that directly during the corrugating operation, the drying of the material starts.
  • the deforming tools are no longer heated and the cardboard web is no longer within the deforming tools dried by the heat emanated from these tools.
  • the cardboard sheets are cold corrugated and are directly subsequently conveyed to a transit drier. This method is particularly applicable when the cardboard sheets are so corrugated that the longitudinal direction of the corrugation is parallel to the main fiber direction, because in such an instance, the occurring reversing torques are rather low.
  • the oncoming cardboard sheet is through the transverse runoff conveyed to the corrugating device in such a way that the main fiber direction will be located transverse to the transporting direction, Inasmuch as in this direction also the strength of the cardboard web is less, it is suggested that ahead of the inlet of the corrugating device. over a distance of from one-third to one-half of the width of the cardboard sheet in transporting direc tion, the idling rollers supporting the cardboard sheets are provided. Furthermore. it is suggested that the feeding speed of the feeding transporting device which feeds the cardboard sheets in spaced relationship to each other, is slightly less than the withdrawal speed of the form-transport belts of the corrugating device. This brings about that the material will slightly back up in front of the corrugating device so that the corrugating device comprising the roller supporting belt and the form roller belt does not have to pull the material whereby it could be weakened.
  • a 'oller conveyor is employed so that when too great a nackup occurs ahead ofthe corrugating device, the ma- :erial will be able to slip on the transport rollers. It is 1ISO possible as feeding transporting device to employ 2 roller pair and to feed the material in a definite way .0 the corrugating device in such a manner that aside 'rom a last residual portion, always a slight pressure in he transporting direction will be exerted onto the web be shaped. This roller pair may also at the same time terve for embossing the cardboard sheets.
  • the naterial is then corrugated and is also during the drying )peration carried by the roller supporting belt.
  • the upper form roller belt need not be passed entirely through the passage drier. Nevertheless, it is suggested to provide an upper holding belt adjacent to the form roller belt in order to avoid changes in position of the corrugated cardboard sheets during the transport thereof through the passage drier and to avoid a warping of the drying corrugated cardboard plates.
  • the cardboard sheets 2 placed upon the sliding rails 5 of a transverse runoff are by lowering the sliding rails 5 conveyed to a roller conveyor 3 in such a way that its main fiber di rection extends transverse to the transport direction 4 of the roller conveyor 3.
  • Adjacent the roller conveyor 3 there are provided idling rollers 6 which support the cardboard sheets 2 and on which the cardboard sheets 2 are displaced toward a corrugating device 7.
  • the corrugating device 7 is formed by a lower roller conveyor belt 8 and a form roller belt 9 which is arranged above the belt 8 and engages the latter.
  • This corrugating device simultaneously forms the inlet into a passage drier I0 and conveys the undulated cardboard sheets at a speed 14 which is slightly less than the feeding speed 4.
  • This corrugating device feeds the corrugated cardboard sheets through a passage drier l0.
  • the displacement of the cardboard sheets may each time be so effected that the corrugation is always precisely at a desired spot for instance, starts at half the height of the corrugation. Moreover, in this way, it is possible to feed the material always at precisely defined pressure toward the corrugating device.
  • An apparatus for wet-forming cardboard sheets into corrugated cardboard plates which includes: a cold forming corrugating means for receiving wet cardboard sheets and corrugating same, conveying means for conveying cardboard sheets to said corrugating means to be corrugated thereby, charging means ar ranged adjacent said conveying means and operable to receive cardboard sheets and depositing same onto said conveying means, and drying means extending around said corrugating means for drying corrugated card board plates formed by said corrugating means, said corrugating means defining the inlet of said drying means, said conveying means including idling roller means arranged ahead of said inlet when looking in the direction in which plane cardboard sheets are to be fed to said corrugating means, and said idling roller means being spaced from said inlet by a distance equalling from one-third to one-half of the width of the respective individual cardboard sheet.
  • said corrugating means includes an endless conveyor link chain with rollers and an endless shaping link chain with rollers.
  • the rollers of both chains being formed by tubular members of the same diameter and being linked to the links of the pertaining chain, and means for driving said chains in synchronism with each other with the rollers of one chain offset to the rollers of the other chain by half the distance between each two successive rollers of the same chain.
  • tubular members have a length equalling at least the length of a cardboard sheet to be corrugated.
  • An apparatus which includes a holding chain similar to said shaping link chain, said holding chain being arranged past said shaping link chain when looking in the direction of movement of the adjacent chain sections of said shaping link chain and said conveyor link chain and being located above the latter for cooperation therewith.
  • An apparatus which includes driving means operatively connected to said conveying means for driving the latter so as to feed the respective cardboard sheets in spaced relationship to each other to said corrugating means at a speed slightly higher than the speed at which said corrugating means discharges corrugated cardboard plates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
US367710A 1972-06-08 1973-06-07 Device for wet-forming cardboard sheets into corrugated cardboard plates Expired - Lifetime US3876359A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2227824A DE2227824C3 (de) 1972-06-08 1972-06-08 Pappenmaschine zur Herstellung von Pappebogen mit einer Einrichtung zum Erzeugen von Wellen in nassem Zustand

Publications (1)

Publication Number Publication Date
US3876359A true US3876359A (en) 1975-04-08

Family

ID=5847124

Family Applications (1)

Application Number Title Priority Date Filing Date
US367710A Expired - Lifetime US3876359A (en) 1972-06-08 1973-06-07 Device for wet-forming cardboard sheets into corrugated cardboard plates

Country Status (10)

Country Link
US (1) US3876359A (pl)
JP (1) JPS4948919A (pl)
AT (1) AT330560B (pl)
BE (1) BE800682A (pl)
CA (1) CA974105A (pl)
FR (1) FR2188499A5 (pl)
GB (1) GB1426360A (pl)
IN (1) IN139527B (pl)
IT (1) IT985358B (pl)
NL (1) NL7307914A (pl)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5858418A (en) * 1996-11-12 1999-01-12 Onduline Machine for reprofiling corrugated materials
US6676589B2 (en) 2000-06-09 2004-01-13 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
US20040142806A1 (en) * 2002-10-29 2004-07-22 Dan Coppus Dunnage converter system, components and method
US20160113235A1 (en) * 2014-10-27 2016-04-28 Jiangsu Zhongheng Pet Articles Joint-Stock Co., Ltd. Folding pet urine pad convenient to take as well as production method and processing equipment thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851007C3 (de) * 1978-11-24 1982-02-04 BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München Vorrichtung zur Herstellung einer wenigstens einseitig deckbelegten Wellpappe
GB2388122A (en) * 2002-05-02 2003-11-05 Richard Gardiner Corrugating machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513777A (en) * 1947-12-09 1950-07-04 Chrysler Corp Apparatus for sinuous contoured material
US3032452A (en) * 1957-02-15 1962-05-01 Montedison Spa Spacing device for shaping rolls, particularly for use in producing polymerized resin reinforced materials, such as glass fibers
US3157551A (en) * 1957-09-17 1964-11-17 Granozio Eurico Apparatus for producing asymmetrically corrugated strips of cardboard, and the like
US3369955A (en) * 1963-12-17 1968-02-20 Bernard Rudloff Apparatus for forming corrugated sheets
US3792952A (en) * 1972-05-09 1974-02-19 M Hamon Sheet forming device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2513777A (en) * 1947-12-09 1950-07-04 Chrysler Corp Apparatus for sinuous contoured material
US3032452A (en) * 1957-02-15 1962-05-01 Montedison Spa Spacing device for shaping rolls, particularly for use in producing polymerized resin reinforced materials, such as glass fibers
US3157551A (en) * 1957-09-17 1964-11-17 Granozio Eurico Apparatus for producing asymmetrically corrugated strips of cardboard, and the like
US3369955A (en) * 1963-12-17 1968-02-20 Bernard Rudloff Apparatus for forming corrugated sheets
US3792952A (en) * 1972-05-09 1974-02-19 M Hamon Sheet forming device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5858418A (en) * 1996-11-12 1999-01-12 Onduline Machine for reprofiling corrugated materials
US6676589B2 (en) 2000-06-09 2004-01-13 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
US7125375B2 (en) 2000-06-09 2006-10-24 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
US20070123405A1 (en) * 2000-06-09 2007-05-31 Kurt Kung Dunnage conversion machine with translating grippers, and method and product
US20090023570A1 (en) * 2000-06-09 2009-01-22 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
US7850589B2 (en) 2000-06-09 2010-12-14 Ranpak Corp. Dunnage conversion machine with wide paddles
US20110045217A1 (en) * 2000-06-09 2011-02-24 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
US20110230326A1 (en) * 2000-06-09 2011-09-22 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
US8177701B2 (en) 2000-06-09 2012-05-15 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
US8999490B2 (en) 2000-06-09 2015-04-07 Ranpak Corp. Dunnage product with crumpled multi-lobed undulating body
US20040142806A1 (en) * 2002-10-29 2004-07-22 Dan Coppus Dunnage converter system, components and method
US20160113235A1 (en) * 2014-10-27 2016-04-28 Jiangsu Zhongheng Pet Articles Joint-Stock Co., Ltd. Folding pet urine pad convenient to take as well as production method and processing equipment thereof

Also Published As

Publication number Publication date
NL7307914A (pl) 1973-12-11
ATA462473A (de) 1975-09-15
IT985358B (it) 1974-11-30
GB1426360A (en) 1976-02-25
JPS4948919A (pl) 1974-05-11
BE800682A (fr) 1973-10-01
AT330560B (de) 1976-07-12
FR2188499A5 (pl) 1974-01-18
IN139527B (pl) 1976-06-26
CA974105A (en) 1975-09-09

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