US3816208A - Method of manufacturing moulded articles of wood particles with cover sheets - Google Patents

Method of manufacturing moulded articles of wood particles with cover sheets Download PDF

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Publication number
US3816208A
US3816208A US00217111A US21711172A US3816208A US 3816208 A US3816208 A US 3816208A US 00217111 A US00217111 A US 00217111A US 21711172 A US21711172 A US 21711172A US 3816208 A US3816208 A US 3816208A
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particles
mold
wood
placing
adhesive
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US00217111A
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V Gottlieb
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R and H SA
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V Gottlieb
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • 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
    • B27N5/00—Manufacture of non-flat articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/08—Stamping or bending
    • B44C3/085—Stamping or bending stamping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/12—Uniting ornamental elements to structures, e.g. mosaic plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/06—Vegetal particles
    • B32B2264/062—Cellulose particles, e.g. cotton
    • B32B2264/067—Wood particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/02—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/12—Pressure

Definitions

  • the disclosure is of a method of manufacturing ornamental relief panels or other moulded articles, characterised in that it comprises the steps of coating a surface of a cover sheet (for example a veneer), placed on a support, with an adhesive without water, placing on this surface a first pre-moulding element, filling the latter with particles of wood previously dried and impregnated with adhesive without water, lightly compressing these particles, placing upon the first premoulding element a second pre-moulding element, likewise filling the latter with particles of wood lightly compressed in sequence, removing the two we moulding elements, placing upon the articles of wood an adhesive-covered surface of a second cover sheet (for example a second veneer), and finally covering the assembly with a definitive mould and subjecting it in a press to regulatable
  • the present invention relates to the manufacture of articles, especially of wood, comprising reliefs or sculptures.
  • the invention has for its aim a method of manufacture of moulded articles effected by means of particles 'of wood enclosed between two supports formed for exam-' ple by cover sheets of veneers of wood or by leaves of base paper.
  • the invention provides a method of manufacturing moulded articles, characterised in that it comprises the steps of coating a surface of a cover sheet (for example a veneer), placed on a support, with an adhesive without water, placing onthis surface a first pre-moulding element, filling the latter with particles of wood previously dried and impregnated with adhesive without water, lightly compressing these particles, placing upon the first pre-moulding element a second pre-moulding element, likewise filling the latter with particles of wood lightly compressed in sequence, removing the two pre-moulding elements, placing upon the particles of wood an adhesive-covered surface of a second cover sheet (for example a second veneer), and finally covering the assembly with a definitive mould and subjecting .it in a press to regulatable pressure and temperature.
  • a cover sheet for example a veneer
  • the temperature and pressure are functions dependent upon the thickness of the article to be made.
  • the method of manufacture of moulded articles made of particles and of cover sheets or veneers of wood comprises the following operations:
  • the first frame or pre-moulding element 4 which is filled with particles of wood 5 treated, that is to say impregnated or coated with adhesive.
  • the depth of this first frame or pre-moulding element 4 is a function of the smallest thickness of the finished article.
  • the second frame or pre-moulding element 6 After a light compression of the particles of wood contained in the first element 4 one places upon this latter the second frame or pre-moulding element 6, which is likewise filled with particles of wood 7, which are also lightly compressed.
  • the two frames or pre-moulding elements 4 and 6 are removed, and upon the particles of wood is placed the adhesive-coated surface 8' of a veneer 8, and upon the surface 8" without adhesive of the veneer 8 is placed the definitive mould 9, on the lower surface of which in contact with the veneer 8 are provided the reliefs which are to be provided on the finished article.
  • This assemblage is then placed in a press (not shown) acting in the direction of the arrow 10.
  • the pre-moulding elements 4 and 6 will have respectively a depth of 32 mm. and 16 mm, whilst the pressure will be of the order of 25 kilograms per square centimeter at a temperature in the region of centigrade.
  • the veneer utilised may be covered, before or after the manufacture of the moulded article or in the course of manufacture, with an overlay; it may likewise be impregnated with resin such as melamine, polyester or analogous resins.
  • the wood veneer can be replaced by one or more sheets of basic paper, which are likewise impregnated with resin, covered with a decorative paper and with an overlay" leaf.
  • the method of the invention can be utilised more particularly for the economic manufacture of moulded articles reproducing reliefs of all kinds.
  • Particularly interesting applications may be the manufacture of door panels, furniture panels, or other decorative panels for walls, ceilings, or the like.
  • a method of manufacturing molded articles decorated in relief comprising coating a surface of a cover sheet with adhesive without water, placing on the coated surface of the cover sheet-a first mold having a mold cavity having an open top and an open bottom, filling the first mold with particles of wood previously dried and impregnated with adhesive without water, lightly compressing these particles in the first mold, placing upon the first mold a second mold having an open top and an open bottom but having a mold cavity smaller than the mold cavity of the first mold, thereafter filling the second mold with particles of wood previously dried and impregnated with adhesive without water, lightly compressing the particles in the second I mold, removing the first and second molds, placing on the particles of wood an adhesivecovered surface on a second cover sheet, placing the assembly thus produced in a press-having a central decorative relief that and pressure thereby to produce an article having the appearance of a sculptured panel.

Abstract

The disclosure is of a method of manufacturing ornamental relief panels or other moulded articles, characterised in that it comprises the steps of coating a surface of a cover sheet (for example a veneer), placed on a support, with an adhesive without water, placing on this surface a first pre-moulding element, filling the latter with particles of wood previously dried and impregnated with adhesive without water, lightly compressing these particles, placing upon the first pre-moulding element a second pre-moulding element, likewise filling the latter with particles of wood lightly compressed in sequence, removing the two pre-moulding elements, placing upon the articles of wood an adhesive-covered surface of a second cover sheet (for example a second veneer), and finally covering the assembly with a definitive mould and subjecting it in a press to regulatable pressure and temperature.

Description

United States Patent (191 Gottlieb [111 3,816,208 June 11-, 1974 METHOD OF MANUFACTURING MOULDED ARTICLES OF WOOD PARTICLES WITH COVER SHEETS [76] lnventor: Victor Gottlieb, 5-7, Rue de la Fontaine, Saveme, France 221 Filed: Jan. 12, 1972 21 Appl. No.: 217,111
[30] Foreign Application Priority Data Prase 156/182 2,831,794 4/1958 Elmendorf 156/276 Primary ExaminerDouglas J. Drummond Assistant Examiner-Caleb Weston Attorney, Agent, or Firm-Young & Thompson 571 ABSTRACT The disclosure is of a method of manufacturing ornamental relief panels or other moulded articles, characterised in that it comprises the steps of coating a surface of a cover sheet (for example a veneer), placed on a support, with an adhesive without water, placing on this surface a first pre-moulding element, filling the latter with particles of wood previously dried and impregnated with adhesive without water, lightly compressing these particles, placing upon the first premoulding element a second pre-moulding element, likewise filling the latter with particles of wood lightly compressed in sequence, removing the two we moulding elements, placing upon the articles of wood an adhesive-covered surface of a second cover sheet (for example a second veneer), and finally covering the assembly with a definitive mould and subjecting it in a press to regulatable pressure and temperature.
2 Claims, 1 Drawing Figure INTRODUCTION AND BACKGROUND OF THE INVENTION The present invention relates to the manufacture of articles, especially of wood, comprising reliefs or sculptures.
The known manufacture of such articles is actually effected by the sculpture of the reliefs or designs or other formations directly in the solid wood.
It goes without saying that such a manufacture, more or less as a craft, is of a very high net cost. Moreover, the articles thus manufactured, by reason of their constitution of solid wood, are notably subject to the atmospheric conditions. This is the case more especially for those articles which are subject to heat and/or humid- Ity.
In order to alleviate these disadvantages, the invention has for its aim a method of manufacture of moulded articles effected by means of particles 'of wood enclosed between two supports formed for exam-' ple by cover sheets of veneers of wood or by leaves of base paper.
BRIEF SUMMARY OF THE INVENTION The invention provides a method of manufacturing moulded articles, characterised in that it comprises the steps of coating a surface of a cover sheet (for example a veneer), placed on a support, with an adhesive without water, placing onthis surface a first pre-moulding element, filling the latter with particles of wood previously dried and impregnated with adhesive without water, lightly compressing these particles, placing upon the first pre-moulding element a second pre-moulding element, likewise filling the latter with particles of wood lightly compressed in sequence, removing the two pre-moulding elements, placing upon the particles of wood an adhesive-covered surface of a second cover sheet (for example a second veneer), and finally covering the assembly with a definitive mould and subjecting .it in a press to regulatable pressure and temperature.
The temperature and pressure are functions dependent upon the thickness of the article to be made.
BRIEF DESCRIPTION OF THE VIEW IN THE DRAWING for the making of an article in conformity with the in vention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Thus, as illustrated, the method of manufacture of moulded articles made of particles and of cover sheets or veneers of wood comprises the following operations:
Upon the adhesive-coated surface 1 of the veneer is placed the first frame or pre-moulding element 4 which is filled with particles of wood 5 treated, that is to say impregnated or coated with adhesive.
The depth of this first frame or pre-moulding element 4 is a function of the smallest thickness of the finished article.
After a light compression of the particles of wood contained in the first element 4 one places upon this latter the second frame or pre-moulding element 6, which is likewise filled with particles of wood 7, which are also lightly compressed.
Next the two frames or pre-moulding elements 4 and 6 are removed, and upon the particles of wood is placed the adhesive-coated surface 8' of a veneer 8, and upon the surface 8" without adhesive of the veneer 8 is placed the definitive mould 9, on the lower surface of which in contact with the veneer 8 are provided the reliefs which are to be provided on the finished article.
This assemblage is then placed in a press (not shown) acting in the direction of the arrow 10.
By way of example, for the manufacture of a moulded article according to the method of the invention, with depths of relief of a maximum of 12 mm. and a minimum of 8 mm. with two veneers of a thickness of 0.8 mm, the pre-moulding elements 4 and 6 will have respectively a depth of 32 mm. and 16 mm, whilst the pressure will be of the order of 25 kilograms per square centimeter at a temperature in the region of centigrade.
By way of modification, the veneer utilised may be covered, before or after the manufacture of the moulded article or in the course of manufacture, with an overlay; it may likewise be impregnated with resin such as melamine, polyester or analogous resins.
According to a further modification of the invention the wood veneer can be replaced by one or more sheets of basic paper, which are likewise impregnated with resin, covered with a decorative paper and with an overlay" leaf.
-The method of the invention can be utilised more particularly for the economic manufacture of moulded articles reproducing reliefs of all kinds.
Particularly interesting applications may be the manufacture of door panels, furniture panels, or other decorative panels for walls, ceilings, or the like.
This method can likewise find an application in the manufacture of complete doors ready to be mounted, as well as in such partitioning elements, notably in the building trades, in the manufacture of coffins, and so What is claimed is:
l. A method of manufacturing molded articles decorated in relief, comprising coating a surface of a cover sheet with adhesive without water, placing on the coated surface of the cover sheet-a first mold having a mold cavity having an open top and an open bottom, filling the first mold with particles of wood previously dried and impregnated with adhesive without water, lightly compressing these particles in the first mold, placing upon the first mold a second mold having an open top and an open bottom but having a mold cavity smaller than the mold cavity of the first mold, thereafter filling the second mold with particles of wood previously dried and impregnated with adhesive without water, lightly compressing the particles in the second I mold, removing the first and second molds, placing on the particles of wood an adhesivecovered surface on a second cover sheet, placing the assembly thus produced in a press-having a central decorative relief that and pressure thereby to produce an article having the appearance of a sculptured panel.
' 2. A method as claimed in claim 1, in which said pressure is about 25 kg. per square cm. and said heat is at bears against the exposed side of said second cover 5 a temperature of about 140C.
sheet, and subjecting the assembly in said press to heat

Claims (2)

1. A method of manufacturing molded articles decorated in relief, comprising coating a surface of a cover sheet with adhesive without water, placing on the coated surface of the cover sheet a first mold having a mold cavity having an open top and an open bottom, filling the first mold with particles of wood previously dried and impregnated with adhesive without water, lightly compressing these particles in the first mold, placing upon the first mold a second mold having an open top and an open bottom but having a mold cavity smaller than the mold cavity of the first mold, thereafter filling the second mold with particles of wood previously dried and impregnated with adhesive without water, lightly compressing the particles in the second mold, removing the first and second molds, placing on the particles of wood an adhesivecovered surface on a second cover sheet, placing the assembly thus produced in a press having a central decorative relief that bears against the exposed side of said second cover sheet, and subjecting the assembly in said press to heat and pressure thereby to produce an article having the appearance of a sculptured panel.
2. A method as claimed in claim 1, in which said pressure is about 25 kg. per square cm. and said heat is at a temperature of about 140*C.
US00217111A 1971-01-20 1972-01-12 Method of manufacturing moulded articles of wood particles with cover sheets Expired - Lifetime US3816208A (en)

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FR7102425A FR2122373B1 (en) 1971-01-20 1971-01-20

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US (1) US3816208A (en)
BE (1) BE778158A (en)
CA (1) CA952713A (en)
DE (1) DE2201755A1 (en)
FR (1) FR2122373B1 (en)
GB (1) GB1362727A (en)
IT (1) IT953376B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126714U (en) * 1974-04-03 1975-10-17
US5178708A (en) * 1991-01-14 1993-01-12 Sumitomo Chemical Co., Ltd. Method for producing multi-layer molded article
CN106003279A (en) * 2016-06-03 2016-10-12 贾翀 Respiration type pressurized drying method for rotary cut veneer, and production method for solid-wood composite floor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2200650A (en) * 1937-04-10 1940-05-14 Arthur R Welch Composite board
US2744047A (en) * 1952-06-02 1956-05-01 Masonite Corp Process of preparing decorative laminates
US2745779A (en) * 1952-10-11 1956-05-15 Ritter Eugen Johann Method of making laminated panels and product thereof
US2825674A (en) * 1953-04-02 1958-03-04 Prase Werner Method of producing boards of pressed composition material
US2831794A (en) * 1958-04-22 Process for manufacturing veneer panels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE498450A (en) * 1949-10-31
FR1489710A (en) * 1965-02-16 1967-07-28 Formica Sa Decorative laminate having a relief, in particular reproducing the relief of wood, and method of manufacturing this product
FR1512384A (en) * 1966-12-12 1968-02-09 Wood carving process and resulting product
FR1595137A (en) * 1968-12-16 1970-06-08
DE1922575A1 (en) * 1969-05-02 1970-11-26 Tabbert Gmbh & Co Wohnwagenwer Method and device for the production of wooden panels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831794A (en) * 1958-04-22 Process for manufacturing veneer panels
US2200650A (en) * 1937-04-10 1940-05-14 Arthur R Welch Composite board
US2744047A (en) * 1952-06-02 1956-05-01 Masonite Corp Process of preparing decorative laminates
US2745779A (en) * 1952-10-11 1956-05-15 Ritter Eugen Johann Method of making laminated panels and product thereof
US2825674A (en) * 1953-04-02 1958-03-04 Prase Werner Method of producing boards of pressed composition material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126714U (en) * 1974-04-03 1975-10-17
JPS5226494Y2 (en) * 1974-04-03 1977-06-16
US5178708A (en) * 1991-01-14 1993-01-12 Sumitomo Chemical Co., Ltd. Method for producing multi-layer molded article
CN106003279A (en) * 2016-06-03 2016-10-12 贾翀 Respiration type pressurized drying method for rotary cut veneer, and production method for solid-wood composite floor
CN106003279B (en) * 2016-06-03 2019-04-05 南京林业大学 The type of respiration high-pressure drying method and solid wooden compound floor production method of rotary cut venner

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Publication number Publication date
FR2122373A1 (en) 1972-09-01
DE2201755A1 (en) 1972-08-03
FR2122373B1 (en) 1973-12-28
GB1362727A (en) 1974-08-07
CA952713A (en) 1974-08-13
BE778158A (en) 1972-05-16
IT953376B (en) 1973-08-10

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Owner name: R + H, SOCIETE ANONYME, D/B/A 9 RUE TANNMUHLE, ROM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GOTTLIEB, VICTOR;REEL/FRAME:004613/0780

Effective date: 19860919