US3873082A - Synthetic paper folding device - Google Patents

Synthetic paper folding device Download PDF

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Publication number
US3873082A
US3873082A US317534A US31753472A US3873082A US 3873082 A US3873082 A US 3873082A US 317534 A US317534 A US 317534A US 31753472 A US31753472 A US 31753472A US 3873082 A US3873082 A US 3873082A
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United States
Prior art keywords
paper
rollers
folding
disposed
roller
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Expired - Lifetime
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US317534A
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English (en)
Inventor
Kotaro Imaizjmi
Katsukuni Nitta
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Yupo Corp
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Yupo Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/14—Buckling folders
    • B65H45/142—Pocket-type folders
    • B65H45/144—Pockets or stops therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/14—Buckling folders
    • B65H45/142—Pocket-type folders
    • B65H45/147—Pocket-type folders folding rollers therefor

Definitions

  • ABSTRACT A paper folding apparatus for use with a supply of synthetic paper, making use of an array of rollers disposed in proximity to such supply.
  • the rollers are in communication with one another to form a series of corresponding roller nips for pressing and guiding the paper in a predetermined manner to impart folds thereon.
  • a plurality of paper turn-up passages disposed in alternate offset relation with respect to said roller nips receive the paper prior to its travel to the next respective nip.
  • Heating means i.e., electric coil, etc.
  • a conveyor belt receives the folded paper and transfers such paper to a pair of rollers where a suitable knife blade cuts the paper to size.
  • Heating means disposed beneath such pair of rollers also provide a source of heat for the rollers as the blade acts upon the paper.
  • the present invention is directed to an apparatus suitable for use in thefolding of synthetic paper. More particularly, the present invention relates to an apparatus adapted to fold synthetic paper of the type which will be more fully described hereinafter, in a manner such that the tendency of the paper as folded exhibits physical characteristics similar to that normally found in natural paper.
  • synthetic paper hasbeen developed, that is material made from stretched plastic resin film such as: polyolphin (single component or mixture of homo or copolymer) polypropylene, polyethylene, polybutane, etc., which exhibits physical properties similar to natural paper, i.e., retaining printed or written matter thereon.
  • Empirical methods and testing have indicated that such synthetic papers manifest a high resistance against folding, with the result that such synthetic paper does not lend itself in the manufacture of such articles as books, bags, maps to be folded, etc.
  • Presently available conventional folding machines which are employed in the manufacture of these articles with natural paper have not worked out well with synthetic paper.
  • a principal feature of the present invention is provided with a synthetic paper folding machine for use with a supply of synthetic paper, including: a series of alternately disposed folding rollers in cooperative relation with respect to one another, said rollers forming an array where mutually associated rollers form paper contact nips with respect to each other; said rollers being disposed in proximity to a passage provided for said paper to enter into said series of folding rollers;
  • one of more paper fold-directing means in offset relation with respect to said nips of said rollers; and heating means for heating said folding rollers to a predetermined temperature.
  • a fold-directing means having a turned up portion extending away from about the nip of the respective folding rollers at an off-setting angle, wherein such means urges said paper passing therethrough from said nips to be formed by folding and returned to the next set of roller nips.
  • Still another object of the present invention is to provide an apparatus for folding synthetic paper free of any defects after such folding operation.
  • Still another object of the present invention is to provide a synthetic paper folding apparatus which employs a heated folding roller yielding a folded synthetic paper exhibiting the characteristics of that of natural paper.
  • a further object of the present invention is to provide a synthetic paper folding apparatus which is able to perfectly execute a multitude of paper folds suitable for use in the manufacture of articles requiring numerous folds.
  • Still another object of the present invention is to provide a synthetic paper folding device effective for multi-step folding.
  • FIG. 1a is a side view illustrating the present invention.
  • FIG. 1b is an end elevation along a line Il shown in FIG. 1.
  • FIG. 2 isan enlarged side elevation of the turned-up portion of the present invention.
  • FIG. 3 is a front elevation of a heated air nozzle of the present invention.
  • FIG. 3b is a cross-section of the heated air nozzle of FIG. 3a.
  • FIG. 4 is a perspective elevation of the folded paper.
  • FIG. 5 is a graphical representation showing the relation of roll temperature and deformation recovery.
  • FIG. 6 is a graphical representation of roll temperature and contraction of synthetic paper.
  • FIG. I shows a side view of one embodiment of the present invention.
  • the paper 1 enters through a supply passage 2 into a sequence of cooperating rollers A A A A and A where such rollers are disposed in cooperating relationship and in communication with one another.
  • the even numbered rollers such as A A A are each disposed to communicate with two adjacent rollers; one in front and one to the rear, i.e., roller A communicates with roller A and A roller A, communicates with roller A and A and roller A communicates only with roller A
  • the points or nips at which the even-numbered rollers communicate with the odd numbered rollers have been identitied with the indication B.
  • a roller communicates with A at point B and with roller A at point B A.
  • roller communicates with roller A at nip B and with A, roller at nip 8,.
  • the A roller communicates with roller A at point 8,.
  • the rollers A, through A are adjustable by suitable means such as by spring Of B2,
  • the rollers'A through A are intended to rotate in counter-direction with respect to each other so as to engage and urge the paper 1 to travel in a select course of travel where folds on paper I l are completed in, for example, four steps.
  • An alternating array of turned-up passages or buckles iddentifled as C C C C are provided at an angle (slanting) with respect to the previously identified nips B B B B B B More specifically, this array of buckles or passages are offset with respect to the roller nips and extend'alternately to the left and to the right of the indicated points B, through B
  • the buckle C extends in a slanting direction from the upper direction of contacting points 3,
  • B buckle C for example, extends from the rear or the lower portions of contacts 8;, and so on for the remainder of the buckles, C C4, etc.
  • FIG. 2 shows an enlarged side elevation of the turned-up passage or buckle C,,.
  • This configuration comprises a pair of upper grid frames 4 and lower frames 5 which oppose one another through a nominal clearance 3 which corresponds to the thickness of the folded paper I.
  • the leading part of the upper frame 4 forms a smooth curved surface so as to guide the paper 1 from the nip B and the upper face of the lower frame 5 extends to the direction of the tangent under roll A of the nip 8,.
  • stopper 6 is provided which is intended for adjustment corresponding to the length of the folding paper.
  • the other buckles or'turned up passages C C C are of similar construction to that shown in FIG. 2.
  • the thin tube comprises an inner pipe 7, a coil heater 8, wound on the outerface of the inner pipe 7 and an outer pipe 9.
  • the inner pipe 7 is communication with an' air compressor of a conventional type (not shown) and includes nozzles 10 disposed in one direction and with corresponding nozzles 11 oriented in a direction opposite to that of nozzles 10 disposed on outer pipe 9.
  • the outer pipe 9 is closed at both ends and is adjustable, by rotating about its axis for proper positioning, so that nozzles 11 can be positioned to eject heated air in the direction of rotation of the folding roller A A,,-.
  • theheated air does not in any way interfere to adversely affect the movement of the paper through the rollers.
  • the position of the thin tube D D is selected to most advantageously provide for efficient movement of the folded paper and to provide heat to the roller.
  • the direction of the stream of air heating the rollers must be the same as that of the folding roller.
  • the paper is usually pressed several times and by subsequent treatment via rollers, the fold is made firm. In such subsequent steps, the latter folding requires a lesser amount of pressing; however, it follows that the resultant folds are not very satisfactory.
  • a paper folding blade in the form of a knife 17 is provided above the nip formed by the rollers l5, l6 and is adapted to adjustably be positioned upwardly and downwardly with respect thereto.
  • thin tubes D D disposed beneath rollers l5, l6 eject heated air to the folds of the paper 1 with a high level of heat emmission; to achieve this, ejected air from the thin tube D D travels in a direction consistent with a rotation of rollers l5, l6. 1
  • Air is supplied to the inner pipe 7 by a compressor and such air is urged to pass through nozzles 10 to the space between the inner pipe 7 and the outer pipe 9, and is then heated by the heating coil wire 8; thereafter,
  • the heated air is ejected from the nozzle 11 and impinges upon the rollers A A to heat them, as well as the synthetic paper 1 as such paper travels therethrough.
  • the temperature of the rollers A A is regu lated to a level in order to maintain it below that point where the synthetic paper can deform and contract.
  • the synthetic paper 1 is cut to a predetermined length and passes from the supply passage 2 to contacting nip B which is that point between folding rollers A A and in turn enters and travels up the buckle C, Subsequently, theend of paper 1 contacts a stop portion 6 on C and then the paper is urged to bend and travel toward the nip B and is retained in the nip B between the folding roller A A such that the paper is folded.
  • the folded paper in turn is urged to travel and enterinto the next turned up passage or buckle C and contacts a stop portion 6 on the buckle C
  • the paper begins to bend and travels toward the nip 8,, between rollers A A, and is in turn folded again.
  • the paper is folded successively by passing contacting points or nips B B for example,'at least four times, and is then in turn urged to travel onto the conveyor belt 12 from whence the folded paper rides on rollers l5, 16.
  • the cutting blade 17 is urged to descend and makes an appropriate cut, and the paper is then folded in a longitudinal direction as shown in FIG. 4.
  • the folding rollers A A are heated and the paper I is heated at the nips B B
  • the folded portions of the paper thus exhibit a lower Young modulus and in turn exhibits the properties of: readily achieving plastic deformation, minimization for deformation to recover, and a'tendency on the part of the synthetic paper to remain in its folded'state.
  • the nozzle which is ejecting heated air for heating the folding rollers can include: heating means such as electronic heating wire, steam ducts or other suitable means; Furthermore, it is also within the contemplation of the present invention to employ an infra-red lamps or other heating means instead of a nozzle arrangement as described above.
  • a folding machine of the type hereinbefore described was constructed in a manner to fold the synthetic paper in four stages or steps as was provided with thin tubes of the type identified as D D which were 16 mm in diameter and provided with an array of spaced nozzles 4 mm in diameter disposed under the folding rollers A
  • Heated air at a temperature of 150 C was ejected from nozzles in the direction identical to that of the direction of the rollers A A and the heated roller l5, 16.
  • the pressure at the nips B,B was set at 0.7 kg/cm and the rotating velocity of the folding roller A A was 900 rpm.
  • the paper being folded in the machine was a synthetic paper of a polypropylene with a thickness of 110;; and a weight of 88 gr/m The results were most satisfactory; the synthetic paper folded to the same degree of responsiveness as the folds in natural paper and the folds maintained their position at a predetermined point in a precise manner.
  • EXAMPLE Ill A further test utilizing the same machine as above, had the synthetic paper folded under a roller pressure of 0.5 kg/cm. at various roller temperatures. Deformation recovery of the fold was measured (the term deformation recovery. that is the height, H at 10 cm. from the fold after a period of 30 seconds after the folding operation) and is shown in FIG. 4. The relationship between roller temperature'and deformation is shown in FIG. 5 and roller temperature and contraction is shown in FIG. 6. It is apparent from the graphs in FIGS. 5 and 6 that the deformation recovery is quite substantial under 30 C. However, if the roller temperature is above C deformation recovery is less, but contraction is large.
  • the turned-up passages buckles C C were employed for deflecting the paper into the nips B,, B etc.
  • buckles C C etc. it is possible to employ one or more folding blades disposed in parallelism with the axis of the rollers A A as a means for folding paper into such nips.
  • the invention can employ a pair of folding rollers 15, 16 in the paper supply passage at a point prior to the folding rollers A,, A instead of as mentioned above.
  • a synthetic paper folding apparatus for successively folding paper sheet material advancing through said apparatus, comprising: a buckle chute folder having a plurality of adjacent paper folding rollers forming corresponding nips at the respective interface surfaces of said rollers; alternately disposed buckle chutes and paper folding roller heating means disposed in proxim ity to said folding rollers, said roller heating means being provided with an inner cylindrical chamber having a series of nozzle passages disposed along its longitudinal axis, an outer generally cylindrical member surrounding said chamber thusly defining a channel therebetween, said outer member being further defined by an integrally formed elongated slot means, heating element means positioned within said channel for heating a heat transfer fluid being fed into said chamber from a source of supply, said outer cylindrical member being rotatable relative to said chamber for orientation of said elongated slot means with respect to adjacent rol' ler undersurfaces to enable heated fluid travelling from said nozzle passages in said channel to exit through said elongated slot means and impinge tangentially upon said undersurfaces in the direction of roller rotation as
  • said elongated slot means being an integrally formed slotted nozzle disposed in the axial direction of said outer cylindrical member for directing a heat fluid stream out of said channel into said ambient atmosphere.
  • said heating element means is an electrical heating element disposed about said inner cylindrical member.

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  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
US317534A 1971-12-25 1972-12-22 Synthetic paper folding device Expired - Lifetime US3873082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47001810A JPS5111973B2 (enrdf_load_stackoverflow) 1971-12-25 1971-12-25

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084391A (en) * 1975-03-10 1978-04-18 Colgate-Palmolive Company Automatic packaging apparatus
WO1986004545A1 (en) * 1985-02-01 1986-08-14 Baxter Travenol Laboratories, Inc. Former for form, fill and seal packaging machines
US4710157A (en) * 1985-02-01 1987-12-01 Baxter Travenol Laboratories, Inc. Former for form, fill and seal packaging machine
EP0984090A3 (en) * 1998-09-01 2002-01-02 Monarch Marking Systems, INC. Label looper
US20030092551A1 (en) * 2001-11-14 2003-05-15 Roland Boss Methods and apparatus for scoring and trimming imaged sheet media
US20040038797A1 (en) * 2000-11-28 2004-02-26 Neubauer William C. Informational item forming machine and method
US20050096204A1 (en) * 2000-11-28 2005-05-05 Neubauer William C. Outsert-forming method
US20050209079A1 (en) * 2004-03-16 2005-09-22 Heidelberger Druckmaschinen Ag Blower for a folder pocket
US20070207910A1 (en) * 2006-03-03 2007-09-06 Vijuk Equipment, Inc. Outsert-forming machine and method
US20080227614A1 (en) * 2005-03-21 2008-09-18 Vijuk Equipment, Inc. Methods of Forming Outserts and Outserts Formed Thereby
EP2177361A1 (en) * 2008-10-20 2010-04-21 Xerox Corporation Heated folding system for a phase change ink imaging device
US20130095991A1 (en) * 2011-10-18 2013-04-18 Konica Minolta Business Technologies, Inc Sheet folder
US20170015518A1 (en) * 2015-07-16 2017-01-19 Heidelberger Druckmaschinen Ag Buckle folding unit and sheet-fed folding machine including the buckle folding unit
US10363766B2 (en) 2013-03-15 2019-07-30 G&K-Vijuk Intern. Corp. Information item forming machine with visual inspection unit and method for forming and sorting informational items
US20240101386A1 (en) * 2022-09-27 2024-03-28 Kyocera Document Solutions Inc. Post-processing apparatus and image formation system capable of post-processing sheet conveyed from image forming apparatus
CN119349331A (zh) * 2024-12-26 2025-01-24 河南凌顶揽众印务有限公司 一种印刷宣传册叠合设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5605058B2 (ja) * 2010-07-29 2014-10-15 東洋製罐株式会社 フィルム状部材の折り曲げ加工装置及び折り曲げ加工方法
JP5742502B2 (ja) * 2011-06-20 2015-07-01 コニカミノルタ株式会社 シート折畳装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1961000A (en) * 1932-01-29 1934-05-29 Brehmer Geb Paper folding machine
US2015445A (en) * 1934-12-18 1935-09-24 Boston Woven Hose & Rubber Co Process of and apparatus for shaping sheet rubber or the like
US2080505A (en) * 1931-02-19 1937-05-18 Dexter Folder Co Folding machine
US3577665A (en) * 1969-09-08 1971-05-04 Chicago Dryer Co Laundry apparatus
US3602944A (en) * 1969-01-30 1971-09-07 Licencia Talalmanyokat Apparatus for the manufacture of synthetic leather

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2080505A (en) * 1931-02-19 1937-05-18 Dexter Folder Co Folding machine
US1961000A (en) * 1932-01-29 1934-05-29 Brehmer Geb Paper folding machine
US2015445A (en) * 1934-12-18 1935-09-24 Boston Woven Hose & Rubber Co Process of and apparatus for shaping sheet rubber or the like
US3602944A (en) * 1969-01-30 1971-09-07 Licencia Talalmanyokat Apparatus for the manufacture of synthetic leather
US3577665A (en) * 1969-09-08 1971-05-04 Chicago Dryer Co Laundry apparatus

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084391A (en) * 1975-03-10 1978-04-18 Colgate-Palmolive Company Automatic packaging apparatus
WO1986004545A1 (en) * 1985-02-01 1986-08-14 Baxter Travenol Laboratories, Inc. Former for form, fill and seal packaging machines
US4710157A (en) * 1985-02-01 1987-12-01 Baxter Travenol Laboratories, Inc. Former for form, fill and seal packaging machine
EP0984090A3 (en) * 1998-09-01 2002-01-02 Monarch Marking Systems, INC. Label looper
US7121992B2 (en) 2000-11-28 2006-10-17 Vijuk Equipment, Inc. Informational item forming machine and method
US20090261570A1 (en) * 2000-11-28 2009-10-22 Vijuk Equipment, Inc. Informational Item Forming Method
US20050037907A1 (en) * 2000-11-28 2005-02-17 Neubauer William C. Modular folding and pressing apparatus
US20050043162A1 (en) * 2000-11-28 2005-02-24 Neubauer William C. Informational item final folding apparatus
US20050043160A1 (en) * 2000-11-28 2005-02-24 Neubauer William C. Booklet forming method and apparatus
US20050096204A1 (en) * 2000-11-28 2005-05-05 Neubauer William C. Outsert-forming method
US8485558B2 (en) 2000-11-28 2013-07-16 G&K-Vijuk Intern. Corp. Informational item forming method
US20060063656A1 (en) * 2000-11-28 2006-03-23 Neubauer William C Informational item forming machine and method
US8029430B2 (en) 2000-11-28 2011-10-04 Vijuk Equipment, Inc. Outsert-forming method
US7182723B2 (en) 2000-11-28 2007-02-27 Vijuk Equipment, Inc. Informational item final folding apparatus
US20070152439A1 (en) * 2000-11-28 2007-07-05 Vijuk Equipment, Inc. Informational Item Forming Machine and Method
US7247129B2 (en) 2000-11-28 2007-07-24 Neubauer William C Outsert-forming method
US9624065B2 (en) 2000-11-28 2017-04-18 G&K-Vijuk Intern. Corp. Informational item forming method
US7396322B2 (en) 2000-11-28 2008-07-08 Vijuk Equipment, Inc. Informational item forming machine and method
US9624064B2 (en) 2000-11-28 2017-04-18 G&K-Vijuk Intern. Corp. Informational item forming method
US7476193B2 (en) * 2000-11-28 2009-01-13 Vijuk Equipment, Inc. Modular folding and pressing apparatus
US20040038797A1 (en) * 2000-11-28 2004-02-26 Neubauer William C. Informational item forming machine and method
US20090275456A1 (en) * 2000-11-28 2009-11-05 Vijuk Equipment, Inc. Informational item forming method
US20090275455A1 (en) * 2000-11-28 2009-11-05 Vijuk Equipment, Inc. Informational Item Forming Method
US7621862B2 (en) 2000-11-28 2009-11-24 Vijuk Equipment, Inc. Outsert-forming method
US20100069214A1 (en) * 2000-11-28 2010-03-18 Vijuk Equipment, Inc. Outsert-Forming Method
US9592990B2 (en) 2000-11-28 2017-03-14 G&K-Vijuk Intern. Corp. Informational item forming method
US20030092551A1 (en) * 2001-11-14 2003-05-15 Roland Boss Methods and apparatus for scoring and trimming imaged sheet media
US20050209079A1 (en) * 2004-03-16 2005-09-22 Heidelberger Druckmaschinen Ag Blower for a folder pocket
US7896796B2 (en) 2005-03-21 2011-03-01 Vijuk Equipment, Inc. Methods of forming outserts and outserts formed thereby
US20080227614A1 (en) * 2005-03-21 2008-09-18 Vijuk Equipment, Inc. Methods of Forming Outserts and Outserts Formed Thereby
US20070207910A1 (en) * 2006-03-03 2007-09-06 Vijuk Equipment, Inc. Outsert-forming machine and method
EP2177361A1 (en) * 2008-10-20 2010-04-21 Xerox Corporation Heated folding system for a phase change ink imaging device
US7857442B2 (en) 2008-10-20 2010-12-28 Xerox Corporation Heated folding system for a phase change ink imaging device
US20100097434A1 (en) * 2008-10-20 2010-04-22 Xerox Corporation Heated folding system for a phase change ink imaging device
CN103058007A (zh) * 2011-10-18 2013-04-24 柯尼卡美能达商用科技株式会社 片材折叠装置
US20130095991A1 (en) * 2011-10-18 2013-04-18 Konica Minolta Business Technologies, Inc Sheet folder
US10363766B2 (en) 2013-03-15 2019-07-30 G&K-Vijuk Intern. Corp. Information item forming machine with visual inspection unit and method for forming and sorting informational items
US20170015518A1 (en) * 2015-07-16 2017-01-19 Heidelberger Druckmaschinen Ag Buckle folding unit and sheet-fed folding machine including the buckle folding unit
US20240101386A1 (en) * 2022-09-27 2024-03-28 Kyocera Document Solutions Inc. Post-processing apparatus and image formation system capable of post-processing sheet conveyed from image forming apparatus
US12286324B2 (en) * 2022-09-27 2025-04-29 Kyocera Document Solutions Inc. Post-processing apparatus and image formation system capable of post-processing sheet conveyed from image forming apparatus
CN119349331A (zh) * 2024-12-26 2025-01-24 河南凌顶揽众印务有限公司 一种印刷宣传册叠合设备

Also Published As

Publication number Publication date
JPS4869620A (enrdf_load_stackoverflow) 1973-09-21
JPS5111973B2 (enrdf_load_stackoverflow) 1976-04-15

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