US3557277A - Process for the shaping of fiber building board - Google Patents

Process for the shaping of fiber building board Download PDF

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Publication number
US3557277A
US3557277A US876216A US3557277DA US3557277A US 3557277 A US3557277 A US 3557277A US 876216 A US876216 A US 876216A US 3557277D A US3557277D A US 3557277DA US 3557277 A US3557277 A US 3557277A
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United States
Prior art keywords
board
fiber board
deformation
fiber
core
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Expired - Lifetime
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US876216A
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English (en)
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Helmut Brodersen
Harry Brodersen
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0011—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping plates or sheets

Definitions

  • FIG. 3 PROCESS FOR THE SHAPING OF FIBER BUILDING BOARD 2 Sheets-Sheet 2 Original Filed Aug. 9, 1967 FIG. 3
  • the invention relates to a process for the shaping by deformation of fiber building board, and in particular to the shaping of hard fiber board at locally limited regions.
  • the process is also suitable for the shaping of fiber board of other kinds, wherein the composition of the basic aggregate varies.
  • the resilient abutment bed may be made from a natural or synthetic rubber or from a synthetic resilient plastic material.
  • the bed must have a degree of hardness between 20 and 70 Shore.
  • the particular value of hardness within the above range is selected in accordance with the degree of curvature of the deformation to be produced. For deformation of slight curvature, the hardness is less than that for deformation of considerable curvature. In the case of a deformation having a bend radius of 45 millimeters, an
  • abutment bed made of rubber and having a hardness of 40 Shore has been found to be advantageous.
  • the thickness of the resilient abutment bed is preferably such that, after the necessar indentation upon the application of the required deformation pressure, the bed still exhibits a certain degree of resilient compressibility. It is the purpose of the resilient bed, in cooperation with the flexibility of the fiber board material achieved by moistening, to prevent the fibers of the fiber board from being displaced relative to each other during the deformation process and in this way to insure that the structure of the fiber board will be retained also on the stretched surface.
  • the duration of the influence of the deformation pressure which depends on the temperature of the heated core and on the moisture contained in the surface of the fiber board, amounts to about 20 to 60 seconds.
  • the magnitude of the deformation pressure depends on the hardness of the resilient abutment bed and the magnitude of the deformation to be produced, and also on the thickness of the fiber board.
  • embossing or other deformation or shaping may be effected with a bending radius of approximately 8 mm., in the case of 3.2 mm. thick fiber board deformation having a bending radius of 10 mm. and in the case of 4 mm. thick hard fiber board deformation having a bending radius of substantially 15 mm., without detachment of fiber from the surface.
  • FIG. 1 is an elevation view partially in section of a first embodiment according to the invention
  • FIG. 2 shows the device according to FIG. 1, during the exertion of the deformation pressure
  • FIG. 3 is a sectional view of a second embodiment for producing locally embossed portions in a fiber board, taken along the line III-III in FIG. 4;
  • FIG. 4 is a plan view of a fiber board formed with embossed portions or indentations according to FIG. 3.
  • the device is seen to be constructed in the manner of a press and it includes an abutment member 2 made of a resilient material, for example rubber, arranged in a U-shaped support member 1, and also a rigid core 3 which is adapted to be heated by means of a heating device of any desired type and which in crosssection corresponds to the shape of the convex side of the deformation to be produced.
  • the core 3 is adapted to be displaced towards and away from the bed 2.
  • the core 3 is secured on a press ram or plunger 4 adapted to be extended from a cylinder 5 by the feeding of a pressure fluid into the cylinder. As shown in FIG.
  • a fiber board 6 is bent approximately at right angles, the core 3 being circular in cross-section and having a radius corresponding to the radius of the bent portion to be produced.
  • the core 3 could also have a circular cross-section only in its lower portion and be given any other desired shape in its upper portion.
  • the core 3 could have in its lower portion, or throughout, a smaller or larger curvature which could for example also be oval.
  • the fiber board 6 to be deformed is first sprayed by a spraying device (not shown), in the zone where the deformation is to be produced, with moist steam.
  • a spraying device not shown
  • it can be moistened in some other manner until a moisture discoloration indicates that the fiber board is sufiiciently moistened in the surface zone to provide the flexibility necessary for the process according to the invention.
  • the duration of the spraying of the fiber board with steam may, depending On the nature and condition of the board, amount to between half a minute and one and a half minutes. If required, moistening may be effected also on both sides of the fiber board.
  • the moistened fiber board 1 is laid on the abutment bed 2 which is designed to have a planar upper surface, and the core is caused to contact the fiber board 6 by extending the ram 4.
  • the fiber board 6 may be introduced sidewards between the abutment bed 2 and the extended core 3.
  • the core 3 is heated to a tempertaure which is only slightly below the carbonization temperature of the material of the fiber board.
  • the fiber board is rapidly heated to its full depth at the point of contact with the core wtihout any danger of damage due to the effect of heat, and the moisture is rapidly withdrawn from the fiber board.
  • the press ram 4 is again extended with the heated core 3 to apply deformation pressure to the Zone of the fiber board 6 beneath the heated core.
  • the core is pressed into the abutment bed 2, with the fiber board interposed therebetween, until the fiber board 6 has been given the substantially rectangular bend as shown in FIG. 2.
  • the deformation pressure is maintained until it is seen that the moisture has been withdrawn from the board.
  • the duration of application of the deformation pressure is between 20 and 60 seconds. After this, the fiber board exhibits an adequate degree of dimensional stability at the point of deformation and may be removed from the press.
  • the resilient material of the abutment bed 2 bears closely against the bent portion of the board and in this way prevents the formation of cracks on the stretched side of the bent portion of the board, inasmuch as the fibers of the fiber board are retained in position.
  • FIG. 3 shows a similar device which operates, however, for producing local deformations in the form of embossed portions, for example, intersecting reinforcement or decoration beads 7 (FIG. 4).
  • the core 13 is in the form of a male die and is formed with intersecting, downwardly-projecting ribs 14.
  • pressure member 15 FIG. 3 which hold the fiber board down in the zone surrounding the beads to be produced, to maintain the planar form of the board between the ribs.
  • the abutment bed 2 which is made of a resilient material, is, to correspond to the length of the bead 7, designed to be wider than in the case of the embodiment according to FIG. 1, but it is again arranged in a support member 1 of U-shaped cross-section. Again, the core 13 is secured to the press ram 4 of the cylinder on which also 4 the pressure members 15 for holding down the fiber board 6 may be attached.
  • the deformation is effected in the same manner as described with respect to FIGS. 1 and 2.
  • the core 3 or 13 is hollow and is adapted to be heated by introducing, a liquid serving as a heat carrier via a stub pipe 16.
  • a process for the permanent shaping of wood fiber hard board by deformation in a locally limited region comprising moistening the board in the region to be deformed to such an extent that a visible moistening discoloration is produced in said region on the board surface, heating the moistened region which is to be deformed, and pressing the moistened region of the board, during the heating, into an abutment bed of resilient material with a hardness of 2070 Shore and formed with a depth greatly exceeding the thickness of the board to deform the board with a small radius of curvature, the moistened region of the board being pressed into the resilient material of the bed to a depth such that the resilient material through lateral and upward expansion during the pressing maintains full and constant contact with the entire region of deformation of the board, and continuing the pressing of the board until the moisture previously incorporated in said region has been substantially evaporated whereupon the board assumes a permanent deformed shape and then terminating the pressing of the board and removing the thus permanently deformed board from the bed.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
US876216A 1966-08-10 1969-12-01 Process for the shaping of fiber building board Expired - Lifetime US3557277A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0088417 1966-08-10

Publications (1)

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US3557277A true US3557277A (en) 1971-01-19

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US876216A Expired - Lifetime US3557277A (en) 1966-08-10 1969-12-01 Process for the shaping of fiber building board

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US (1) US3557277A (xx)
AT (1) AT283706B (xx)
BE (1) BE702504A (xx)
CH (1) CH480168A (xx)
DE (1) DE1653163A1 (xx)
GB (1) GB1183618A (xx)
NL (1) NL6710942A (xx)
SE (1) SE328117B (xx)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673297A (en) * 1970-10-08 1972-06-27 Harold R Moore Methods of manufacturing electrical insulating structures
US3753831A (en) * 1970-08-28 1973-08-21 Boston Machine Works Co Folding apparatus
US3948710A (en) * 1974-04-19 1976-04-06 Harvey William B Method of contouring a planar laminate structure
US4087509A (en) * 1973-02-05 1978-05-02 Gates John I Method for manufacture of window with extruded synthetic frame and the like
US4153665A (en) * 1976-09-24 1979-05-08 Amerace Corporation Apparatus and method for folding a sheet of material
US4514354A (en) * 1982-12-10 1985-04-30 James River-Norwalk, Inc. Manufacture of molded paperboard articles
US4583935A (en) * 1984-10-29 1986-04-22 The Boeing Company Apparatus for forming thermoplastic laminates into major sections
WO1987002618A1 (en) * 1985-10-24 1987-05-07 Anechoic Systems, Inc. Plastic bending
US4826420A (en) * 1984-10-29 1989-05-02 The Boeing Company Apparatus for forming thermoplastic laminates into major sections
US4885317A (en) * 1988-07-21 1989-12-05 Northrop Corporation Press forming process and apparatus for plastic foam and plastic foam product
US4980013A (en) * 1988-11-04 1990-12-25 The Boeing Company Apparatus for forming and curing an I-section workpiece
US5076873A (en) * 1988-11-04 1991-12-31 The Boeing Company Method for forming and curing an I-section workpiece
AU653419B2 (en) * 1991-08-08 1994-09-29 Tetra Laval Holdings & Finance Sa Creasing apparatus
US5824255A (en) * 1994-10-28 1998-10-20 The Boeing Company Honeycomb core forming process
CN1042458C (zh) * 1993-08-20 1999-03-10 安东尼奥·龙迪内里 变速传动装置,特别是车辆的变速传动装置
US6186766B1 (en) 1998-10-29 2001-02-13 The Boeing Company Apparatus for shaping honeycomb core
US6186936B1 (en) 1998-03-04 2001-02-13 Hallmark Cards, Incorporated Paper embossing system with a flexible counter and method of embossing
US6349639B1 (en) 2000-08-22 2002-02-26 Hallmark Cards, Incorporated Paper embossing system with a flexible counter and method of embossing
WO2006112180A1 (en) * 2005-04-01 2006-10-26 Olympus Corporation Processing apparatus, mold for wood processing, and method of processing wood
CN101128292B (zh) * 2005-04-01 2011-03-16 奥林巴斯株式会社 加工装置、木材加工模具及木材加工方法
CN104228095A (zh) * 2014-09-29 2014-12-24 江阴德玛斯特钻具有限公司 钻杆保护套用板折弯装置
US20160176140A1 (en) * 2014-12-22 2016-06-23 Magna Steyr Fahrzeugtechnik Ag & Co Kg Semi-finished honeycomb part and sandwich part

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2390336B (en) * 2002-07-03 2005-06-15 Kenneth David Waller Shaping manufactured board

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753831A (en) * 1970-08-28 1973-08-21 Boston Machine Works Co Folding apparatus
US3673297A (en) * 1970-10-08 1972-06-27 Harold R Moore Methods of manufacturing electrical insulating structures
US4087509A (en) * 1973-02-05 1978-05-02 Gates John I Method for manufacture of window with extruded synthetic frame and the like
US3948710A (en) * 1974-04-19 1976-04-06 Harvey William B Method of contouring a planar laminate structure
US4153665A (en) * 1976-09-24 1979-05-08 Amerace Corporation Apparatus and method for folding a sheet of material
US4514354A (en) * 1982-12-10 1985-04-30 James River-Norwalk, Inc. Manufacture of molded paperboard articles
US4583935A (en) * 1984-10-29 1986-04-22 The Boeing Company Apparatus for forming thermoplastic laminates into major sections
US4826420A (en) * 1984-10-29 1989-05-02 The Boeing Company Apparatus for forming thermoplastic laminates into major sections
WO1987002618A1 (en) * 1985-10-24 1987-05-07 Anechoic Systems, Inc. Plastic bending
US4885317A (en) * 1988-07-21 1989-12-05 Northrop Corporation Press forming process and apparatus for plastic foam and plastic foam product
US4980013A (en) * 1988-11-04 1990-12-25 The Boeing Company Apparatus for forming and curing an I-section workpiece
US5076873A (en) * 1988-11-04 1991-12-31 The Boeing Company Method for forming and curing an I-section workpiece
AU653419B2 (en) * 1991-08-08 1994-09-29 Tetra Laval Holdings & Finance Sa Creasing apparatus
US5509885A (en) * 1991-08-08 1996-04-23 Tetra Alfa Holdings & Finance S.A. Creasing apparatus
CN1042458C (zh) * 1993-08-20 1999-03-10 安东尼奥·龙迪内里 变速传动装置,特别是车辆的变速传动装置
US5824255A (en) * 1994-10-28 1998-10-20 The Boeing Company Honeycomb core forming process
US6186936B1 (en) 1998-03-04 2001-02-13 Hallmark Cards, Incorporated Paper embossing system with a flexible counter and method of embossing
US6186766B1 (en) 1998-10-29 2001-02-13 The Boeing Company Apparatus for shaping honeycomb core
US6349639B1 (en) 2000-08-22 2002-02-26 Hallmark Cards, Incorporated Paper embossing system with a flexible counter and method of embossing
WO2006112180A1 (en) * 2005-04-01 2006-10-26 Olympus Corporation Processing apparatus, mold for wood processing, and method of processing wood
US20060236650A1 (en) * 2005-04-01 2006-10-26 Olympus Corporation Processing apparatus, mold for wood processing, and method of processing wood
CN101128292B (zh) * 2005-04-01 2011-03-16 奥林巴斯株式会社 加工装置、木材加工模具及木材加工方法
CN104228095A (zh) * 2014-09-29 2014-12-24 江阴德玛斯特钻具有限公司 钻杆保护套用板折弯装置
CN104228095B (zh) * 2014-09-29 2016-06-29 江阴德玛斯特钻具有限公司 钻杆保护套用板折弯装置
US20160176140A1 (en) * 2014-12-22 2016-06-23 Magna Steyr Fahrzeugtechnik Ag & Co Kg Semi-finished honeycomb part and sandwich part
US9956735B2 (en) * 2014-12-22 2018-05-01 Magna Steyr Fahrzeugtechnik Ag & Co Kg Semi-finished honeycomb part and sandwich part

Also Published As

Publication number Publication date
CH480168A (de) 1969-10-31
NL6710942A (xx) 1968-02-12
GB1183618A (en) 1970-03-11
BE702504A (xx) 1968-01-15
DE1653163A1 (de) 1971-01-21
AT283706B (de) 1970-08-25
SE328117B (xx) 1970-09-07

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