US3034212A - Method of producing forming screen - Google Patents

Method of producing forming screen Download PDF

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Publication number
US3034212A
US3034212A US827943A US82794359A US3034212A US 3034212 A US3034212 A US 3034212A US 827943 A US827943 A US 827943A US 82794359 A US82794359 A US 82794359A US 3034212 A US3034212 A US 3034212A
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United States
Prior art keywords
cloth
forming
metallic
screen
metallic cloth
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
US827943A
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English (en)
Inventor
Richard F Reifers
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.)
Diamond National Corp
Original Assignee
Diamond National Corp
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Filing date
Publication date
Application filed by Diamond National Corp filed Critical Diamond National Corp
Priority to US827943A priority Critical patent/US3034212A/en
Priority to LU38935D priority patent/LU38935A1/xx
Application granted granted Critical
Publication of US3034212A publication Critical patent/US3034212A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21JFIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J7/00Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F27/00Making wire network, i.e. wire nets
    • B21F27/12Making special types or portions of network by methods or means specially adapted therefor
    • B21F27/18Making special types or portions of network by methods or means specially adapted therefor of meshed work for filters or sieves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21FWORKING OR PROCESSING OF METAL WIRE
    • B21F45/00Wire-working in the manufacture of other particular articles

Definitions

  • the present invention relates to a method of producing forming screen, and more particularly to a method of producing forming screen wherein metallic cloth is provided with corrugations.
  • Articles of molded pulp are conveniently produced on forming dies, these being in the proper shape and made of a heavy metal, such as brass.
  • This die is provided with a great number of small holes extending from one surface thereof to the other.
  • the die is immersed into a slurry of pulp fibers and water, and has suction applied to one surface thereof to draw the water through the die.
  • forming screen that extends over the forming face of the die collects the pulp fibers and prevents them from passing through the small holes. After a period of time, a thickness of pulp fibers is built up on the forming screen, and the die is removed from the slurry and the article is then removed from the die.
  • An object of the present invention is to provide a method of producing a forming screen for .a molded pulp forming die of highly complex shape.
  • Another object of the present invention is the provision of a method for producing a single forming screen which may be used for a molded pulp forming die of highly irregular shape.
  • Still another object of the present invention is to provide a method of producing screening that may be readily formed, in a single'piece, into a forming screen of complex configuration.
  • a further object of the present invention is the provision of a method of producing screening that is capable of being formed into highly irregular and complex configurations without tearing or piecing.
  • a still further object of the present invention is to provide a method for producing forming screen for molded pulp forming dies that will bemore economical than previously used methods, in order to reduce the cost of complex molded pulp articles.
  • FIG. 1 is a perspective view showing a first step in ice the method of the present invention, wherein metallic cloth is being corrugated.
  • FIG. 2 is a view similar to FIG. 1, and showing a second step in accordance with the present invention wherein the cloth of FIG. 1 is being corrugated at right angles to the step of FIG. 1.
  • FIG. 3 is a cross-sectional View of a piece of metallic cloth after it has passed through the steps shown in FIGS. 1 and 2.
  • FIG. 4 illustrates diagrammatically further steps in the preparation of a forming screen in accordance with the present invention.
  • FIG. 5 is a perspective view of a forming screen of a highly complex configuration that has been made in accordance with the present invention.
  • FIG. 1 a pair of crimping rollers 11 and 12, which are carried by a framework, generally denoted 13.
  • the crimping rollers 11 and 12 have transversely extending crimp producing surfaces .14 thereon, and one or both of the rollers 11 and 12 may be rotated, as by crank 16
  • the axle 17 of upper crimping roller 11 is carried in a hearing that may be adjusted vertically by means of the adjusting screw 18, in known fashion.
  • the turn- 1 ing of the adjusting screw 18 will serve, in known the nip of crimping rollers 11 and 12, and transversely of the surfaces 14 thereof.
  • wires 21 which extend in an undulating fashion transversely of the wires 21
  • the wires 21 correspond to the woof threads of conventional cloth and the wires Ztl correspond to the warp threads in a-conventional cloth.
  • these crimping rollers have produced in the cloth C a series of corrugations extending transversely of the straight wires 26.
  • the cloth C may be seen to have single corrugations at the left of the crimping rollers 11 and 12, these single corrugations corresponding to those at the right of the rollers 11 and 12 in FIG. 1, and the cloth C having double corrugations to the night of the crimping rollers 11 and 12 in FIG. 2.
  • FIG. 3 is across-seotional view of the wire cloth C after it has been treated as above described in order to provide it with the double corrugations.
  • FIG. 3 is taken on the line 3A, 3B of FIG. 2, and it will be understood that the part 3A thereof shows the appearance of the cross-section of the double corrugated cloth C which is perpendicular to the straight wires 20 and that the part marked 38 of FIG.-3 is a cross-sectional view taken parallel to the straight wire 20.- It Will be understood,
  • the metallic clot-h C may be seen to have a generally sinusoidal character, and is relatively flattened. On' the articles may be accomplished with a substantial reduction in cost and time, and thus thecost of the finished molded pulp articles may also be reduced.
  • the metallic cloth C as it is in the form shown in FIG. 3, is adaptable to being used with a pulp forming die, as discussed herein above. It may be additionally treated as described below.
  • FIG. 4 there is show an oven 39
  • the heating chamber 30 is first placed'into the heating chamber 30. Preferably it is heated at a temperature of 1000 F. for a period of approximately two minutes. 'After thus being heated, the metallic cloth C is allowed to cool in still air at room temperature. Following the cooling, of the cloth C, it is placed between the mating members 3-1 and 32 of a Wire forming die 33.
  • Such dies It will be obvious to those skilled in the art that various changes may be made'without departing from the spirit of the invention and therefore the invention is not limited to What is shown in'the'drawings and described in the specification but only as indicated in the appended 7 ticle to be manufactured.
  • the wire forming die 33 is shaped to conform to the pulp forming die on which the metallic cloth C will be subsequently placed, and of course is also of the shape of the molded pulp article to be produced.
  • the metallic cloth C is only partially formed after this initial pressing step, and thereafter, it is again placed in order to register the partially formed metallic cloth with:
  • the press is then actuated to produce a force of twenty tons, and there thus results the desired forming screen.
  • FIG. 5 An example of a complex article that may be made with a single forming screen is shown in FIG. 5, wherein cells, sixteen upstanding posts and a peripheral flange along the four sides thereof.
  • the corresponding screen 8 may be seen to have the cells 35 andthe upstanding posts 36, as Well as the surrounding flange '37.
  • the method of preparing metallic cloth for use as screening on a pulp forming die comprising passing a piece of the metallic cloth through mating crimping rollers 'having transversely extending crimp-producing surfaces with the straight wires parallel to the direction of travel and transversely of said surfaces, thereafter passing the said piece of metallic cloth through said crimping rollers with the straight wires perpendicular to the direction of travel, whereby to produce a double corrugated piece of metallic cloth, heating said double-corrugated piece of metallic cloth, cooling said cloth, partially forming said metallic cloth in a wire forming die to make a formed screen for the pulp forming die wherein said screen corresponds in shape to the-molded pulp article to be m anufactured, repeating said heating and cooling steps, and completely forming said metallic cloth in said wire forming die.
  • the method of preparing metallic cloth for use as screening on a pulp forming die comprising passing a piece of the metallic cloth through mating crimping rollers having transversely extending crimp-producing surfaces with the straight wires parallel to the direction of travel and transversely of said surfaces, thereafter passing'the said piece of metallic cloth through said crimping rollers with the straight wires perpendicular to the direction of travel, whereby to produce a double corrugated piece of metallic cloth, heating said double-corrugated piece of metallic cloth for two minutes at a temperature of 1000 F., cooling said cloth in still air at room temperature,
  • the method of preparing metallic cloth for use as screening on a pulp forming die comprising passing a piece of the metallic cloth through mating crimping rollers having transversely extending crimp-producing surfaces with the straight wires parallel to the direction of travel and transversely of said surfaces, thereafter slightly increasing the center to center distance of said-crimping rollers and passing the said piece of metallic cloth through said crimping rollers with the straight wires perpendicular to the direction of travel, whereby to produce a double corrugated piece of metallic cloth, heating said doublecorrugated piece of metallic cloth, cooling said cloth, forming said metallic cloth in a wire forming die under a force of one ton to make a formed screen for the pulp forming die wherein said screen corresponds in shape to the molded pulp article to be manufactured, repeating said heating and cooling steps, and forming said metallic cloth in said wire forming die under a force of twenty tons.
  • the method of preparing metallic cloth for use as screening on a pulp forming die comprising passing a at room temperature, forming said metallic cloth in a wire forming die under a force of one ton to make a formed screen for the pulp forming die wherein said screen corresponds in shape to the molded pulp article to bemanu factured, repeating said heating and cooling steps, and forming said metallic cloth in said wire forming die under a force of twenty tons.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
US827943A 1959-07-17 1959-07-17 Method of producing forming screen Expired - Lifetime US3034212A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US827943A US3034212A (en) 1959-07-17 1959-07-17 Method of producing forming screen
LU38935D LU38935A1 (xx) 1959-07-17 1960-07-11

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US827943A US3034212A (en) 1959-07-17 1959-07-17 Method of producing forming screen

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LU (1) LU38935A1 (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172343A (en) * 1962-03-12 1965-03-09 Wahlfeld Mfg Company Treadway and method of forming
US6280856B1 (en) * 1994-04-15 2001-08-28 V. Kann Rasmussen Industri A/S Deformable roof flashing material and a method of manufacturing such a material
US20050011244A1 (en) * 2003-07-15 2005-01-20 Hampton Daniel Riley Roller rocker
US20050183220A1 (en) * 2002-08-11 2005-08-25 Hugo Weber Cleaning system designed to be installed on a surface that is exposed to poor weather conditions
GB2457333A (en) * 2008-02-08 2009-08-12 Nichias Corp Rolled sheet with orthogonal sinusoidal profiles
US20120184426A1 (en) * 2000-09-14 2012-07-19 Kling Daniel H Apparatus for Forming a Sheet Structure from a Foldable Material

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US662567A (en) * 1900-04-25 1900-11-27 Isabella Von Lipowska Metal bearing-plate.
US969460A (en) * 1909-11-01 1910-09-06 Joseph Ramsey Sheet-embossing mill.
US1589798A (en) * 1925-01-29 1926-06-22 Fred J Ewers Wire crimper
US1942451A (en) * 1930-02-26 1934-01-09 Reynolds Wire Co Woven wire and method of producing the same
US2361039A (en) * 1939-10-13 1944-10-24 Chicago Metallic Mfg Company Method of producing stippled sheet metal
GB637759A (en) * 1946-05-06 1950-05-24 James Hunter Wily Improvements in or relating to method of and apparatus for manufacturing articles from wire screen material
US2798515A (en) * 1955-11-30 1957-07-09 Otto H York Apparatus for corrugating and refolding mesh cloth
US2867559A (en) * 1956-12-31 1959-01-06 Gen Electric Method for producing grain oriented silicon steel

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US662567A (en) * 1900-04-25 1900-11-27 Isabella Von Lipowska Metal bearing-plate.
US969460A (en) * 1909-11-01 1910-09-06 Joseph Ramsey Sheet-embossing mill.
US1589798A (en) * 1925-01-29 1926-06-22 Fred J Ewers Wire crimper
US1942451A (en) * 1930-02-26 1934-01-09 Reynolds Wire Co Woven wire and method of producing the same
US2361039A (en) * 1939-10-13 1944-10-24 Chicago Metallic Mfg Company Method of producing stippled sheet metal
GB637759A (en) * 1946-05-06 1950-05-24 James Hunter Wily Improvements in or relating to method of and apparatus for manufacturing articles from wire screen material
US2798515A (en) * 1955-11-30 1957-07-09 Otto H York Apparatus for corrugating and refolding mesh cloth
US2867559A (en) * 1956-12-31 1959-01-06 Gen Electric Method for producing grain oriented silicon steel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172343A (en) * 1962-03-12 1965-03-09 Wahlfeld Mfg Company Treadway and method of forming
US6280856B1 (en) * 1994-04-15 2001-08-28 V. Kann Rasmussen Industri A/S Deformable roof flashing material and a method of manufacturing such a material
US20120184426A1 (en) * 2000-09-14 2012-07-19 Kling Daniel H Apparatus for Forming a Sheet Structure from a Foldable Material
US20050183220A1 (en) * 2002-08-11 2005-08-25 Hugo Weber Cleaning system designed to be installed on a surface that is exposed to poor weather conditions
US20050011244A1 (en) * 2003-07-15 2005-01-20 Hampton Daniel Riley Roller rocker
GB2457333A (en) * 2008-02-08 2009-08-12 Nichias Corp Rolled sheet with orthogonal sinusoidal profiles
US20090202856A1 (en) * 2008-02-08 2009-08-13 Akinao Hiraoka Metallic molded sheet and heat shielding cover
GB2457333B (en) * 2008-02-08 2012-07-18 Nichias Corp Metallic molded sheet and heat shielding cover
US9149851B2 (en) 2008-02-08 2015-10-06 Nichias Corporation Metallic molded sheet and heat shielding cover

Also Published As

Publication number Publication date
LU38935A1 (xx) 1960-09-12

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