US3206346A - Method of treatment of porous wallboard - Google Patents

Method of treatment of porous wallboard Download PDF

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Publication number
US3206346A
US3206346A US97290A US9729061A US3206346A US 3206346 A US3206346 A US 3206346A US 97290 A US97290 A US 97290A US 9729061 A US9729061 A US 9729061A US 3206346 A US3206346 A US 3206346A
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US
United States
Prior art keywords
board
rollers
thickness
original thickness
porous
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
US97290A
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English (en)
Inventor
Nuorivaara Ensio
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Individual
Original Assignee
Individual
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Filing date
Publication date
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Application granted granted Critical
Publication of US3206346A publication Critical patent/US3206346A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1023—Surface deformation only [e.g., embossing]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves

Definitions

  • This invention refers to a method of reducing the dimensional changes taking place in the plane of porous wallboard due to moisture variation and the stresses resulting therefrom.
  • porous wallboard an undesirable property of porous wallboard is the dimensional variation thereof caused by variations of moisture.
  • the moisture in the board is somewhat greater during storage than when the board is fixed to the base surface underneath. If the board is glued to a rigid base, such "as a concrete wall, a .plastered surface or the like and the moisture in the same varies slightly there will be formed in the board stresses that are so great that the base surface, the glue or the board itself will give way, with the result that the board comes loose from its support.
  • Such intermediate flexible element may be a flexible plastic glue which secures the board to the base.
  • Such methods of fastening are expensive however and between the board and the base there is also left an air space.
  • the present invention has as its principal object to provide wallboard of the above stated kind which is free from all the above stated disadvantages.
  • a characteristic feature of the invention is that the board is suitably compressed momentarily to a thickness less than half of its original thickness, such that its internal strucure is altered.
  • a board treated according to this invention can without further treatment be fastened to a base surface by means of gluing.
  • the board has insufficient strength to tear itself free from its base, because the internal structure of the board has been changed such that the fibers are no longer interconnected as effectively as before and will give way to a certain extent.
  • the board is pressed for an instant to a thickness equal to less than half of the original thickness.
  • FIG. 1 shows .a pressing :operation in the treatment of a board
  • FIG. 2 shows the surface ofa treated board
  • FIG. 3 shows a section taken .along line JII"IIII in FIG. 2.
  • the numeral 1 designates an ordinary porous wallboard whichis fed along by the top roller 2 and the bottom roller 3 in a direction shown by the arrow 4. Simultaneously these rollers press the board just for an "instant so that the thickness of the :board becomes less than half of the original thickness. The pressing period is short so that the change in the form of the board 1 is not permanent and the board will attain its original thickness.
  • FIGURES 2 and 3 illustrate an embodiment in the arrangement of the elevations and excavations formed on the surface of the board 1.
  • porous wallboard In the event the porous wallboard is intended to be used for inside panelling, it is appropriate to cover one or both of its sides with a layer of material such as paper, cloth, metal or the like.
  • the fastening of such layer to the board can most suitably be performed simultaneously with the pressing operation.
  • the surface of the board is covered with a layer or film of glue, and on top of this adhesive layer the said covering layer is placed before the board is fed between between the rollers 2 and 3.
  • glue it is advisable to heat one or both of the rollers. The heating of the rollers will also harden the elevations and excavations.
  • the number of rollers may vary. In certain cases it is preferable to perform the pressing of the board between several successive pairs of rollers, between which the board is pressed gradually with increased pressure.
  • a method of treating a porous compressible fibre board of determinable thickness to provide dimensional stability thereof under moisture variation comprising deforming the internal structure of the board by momentarily and temporarily compressing the board to a thickness which is less than half the original thickness of the board and allowing the board to resiliently 3 assume its original thickness immediately after the cornpressing of the board;
  • a method of treating a porous fibre board of determinable thickness comprising deforming the internal structure of the board by advancing said board between a pair of rollers which are spaced apart a distance which is less than one half the thickness of the board whereby said board is momentarily and temporarily compressed to a thickness less than one half the original thickness of the board as the board passes between the rollers, and allowing said board to assume substantially its original thickness after it passes through said rollers, the deforming of the internal structure of the board under the compression of the rollers and the subsequent assumption of its original thickness conferring on said fibre board dimensional stability when exposed to varying humidity conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)
  • Finishing Walls (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
US97290A 1960-11-19 1961-03-21 Method of treatment of porous wallboard Expired - Lifetime US3206346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI191360 1960-11-19

Publications (1)

Publication Number Publication Date
US3206346A true US3206346A (en) 1965-09-14

Family

ID=8506407

Family Applications (1)

Application Number Title Priority Date Filing Date
US97290A Expired - Lifetime US3206346A (en) 1960-11-19 1961-03-21 Method of treatment of porous wallboard

Country Status (5)

Country Link
US (1) US3206346A (de)
BE (1) BE610424A (de)
CH (1) CH408407A (de)
ES (1) ES272012A1 (de)
GB (1) GB948959A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357847A (en) * 1963-12-13 1967-12-12 Flintkote Co Method of treating the outer surface of softboard products
US3480501A (en) * 1965-03-26 1969-11-25 Oren P Burch Method of manufacturing patterned panel
US4556527A (en) * 1982-10-01 1985-12-03 Windmoller & Holscher Method and apparatus for making plastics-coated sanitary webs of paper

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1825977A (en) * 1928-08-18 1931-10-06 Sun Oil Co Process of cracking mineral oil
US2136730A (en) * 1935-11-13 1938-11-15 Ernest J Sweetland Method of treating lumber
US2477300A (en) * 1945-05-12 1949-07-26 Virts Inc Decorative shelf edging
US2537126A (en) * 1948-08-14 1951-01-09 American Viscose Corp Coated sheet material and process for making the same
US2600843A (en) * 1952-01-24 1952-06-17 Vibradamp Corp Process for manufacturing compressible glass fiber shock absorption material and products
US2694026A (en) * 1951-08-14 1954-11-09 Merle J Johnson Typewriter pad
US2711380A (en) * 1952-11-07 1955-06-21 Reynolds Metals Co Foil laminate
US2859489A (en) * 1957-02-06 1958-11-11 Union Stock Yard & Transit Co Chicago Collapsible insulation
GB821537A (en) * 1955-07-25 1959-10-07 Hudson Foam Plastics Corp Lamination of polyester foams
US2954838A (en) * 1955-05-18 1960-10-04 Svenska Tandsticks Aktiebolage Sound deadening or absorbing wallboard

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1825977A (en) * 1928-08-18 1931-10-06 Sun Oil Co Process of cracking mineral oil
US2136730A (en) * 1935-11-13 1938-11-15 Ernest J Sweetland Method of treating lumber
US2477300A (en) * 1945-05-12 1949-07-26 Virts Inc Decorative shelf edging
US2537126A (en) * 1948-08-14 1951-01-09 American Viscose Corp Coated sheet material and process for making the same
US2694026A (en) * 1951-08-14 1954-11-09 Merle J Johnson Typewriter pad
US2600843A (en) * 1952-01-24 1952-06-17 Vibradamp Corp Process for manufacturing compressible glass fiber shock absorption material and products
US2711380A (en) * 1952-11-07 1955-06-21 Reynolds Metals Co Foil laminate
US2954838A (en) * 1955-05-18 1960-10-04 Svenska Tandsticks Aktiebolage Sound deadening or absorbing wallboard
GB821537A (en) * 1955-07-25 1959-10-07 Hudson Foam Plastics Corp Lamination of polyester foams
US2859489A (en) * 1957-02-06 1958-11-11 Union Stock Yard & Transit Co Chicago Collapsible insulation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357847A (en) * 1963-12-13 1967-12-12 Flintkote Co Method of treating the outer surface of softboard products
US3480501A (en) * 1965-03-26 1969-11-25 Oren P Burch Method of manufacturing patterned panel
US4556527A (en) * 1982-10-01 1985-12-03 Windmoller & Holscher Method and apparatus for making plastics-coated sanitary webs of paper

Also Published As

Publication number Publication date
CH408407A (de) 1966-02-28
BE610424A (fr) 1962-03-16
GB948959A (en) 1964-02-05
ES272012A1 (es) 1962-03-16

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