GB2335626A - Board - Google Patents

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Publication number
GB2335626A
GB2335626A GB9806132A GB9806132A GB2335626A GB 2335626 A GB2335626 A GB 2335626A GB 9806132 A GB9806132 A GB 9806132A GB 9806132 A GB9806132 A GB 9806132A GB 2335626 A GB2335626 A GB 2335626A
Authority
GB
United Kingdom
Prior art keywords
thin
sheet
board
melamine
impregnated
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.)
Granted
Application number
GB9806132A
Other versions
GB9806132D0 (en
GB2335626B (en
Inventor
Alzualde Javier Ayestaran
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.)
Prodema SA
Original Assignee
Prodema SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Prodema SA filed Critical Prodema SA
Priority to GB9806132A priority Critical patent/GB2335626B/en
Publication of GB9806132D0 publication Critical patent/GB9806132D0/en
Publication of GB2335626A publication Critical patent/GB2335626A/en
Application granted granted Critical
Publication of GB2335626B publication Critical patent/GB2335626B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
    • 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
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/06—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/02—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose in the form of fibres or filaments
    • 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
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/04—Layered products comprising a layer of synthetic resin as impregnant, bonding, or embedding substance
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • E04C2/24—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 laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard
    • B32B2317/125—Paper, e.g. cardboard impregnated with thermosetting resin

Abstract

A board comprises in consecutive layers from the center to the outside, a core (1) of cellulose impregnated in phenolic resin: a thin sheet (2) of cellulose impregnated in melamine; a thin sheet (3) of laminated wood treated with a phenolic resin; a pack (4) of shades comprised of one to three thin, translucent and/or transparent sheets of cellulose, each impregnated in a resin which may be either melamine, melamine-acrylic, phenolic or melamine-phenolic; and a thin, transparent, acrylic sheet (5) with a surface finish achieved by means of a thin peel-off sheet (6) applied during the board-pressing process.

Description

1 "kB(" 2335626 The sandwich-type boards, in the manufacture of which
different layers of cellulosebased material that has been impregnated and then pressed to produce a compact board, are already known.
Said known boards involve drawbacks which include:
- Physicochemical contamination of the different layers of the board impregnated in different resins.
Limited color-related adaptability to the requirements of different customers.
Limited adaptability finish-for the finished board.
Does not withstand the physicochemical environmental conditions very well.
For manufacturing these boards, a pack of cellulose sheets impregnated in phenolic resin is usually used at the core, over which a thin sheet of wood measuring, for example, 0.5 mm in thickness, also impregnated in phenolic resin is place on each side. The less attractive, darker coloring of the core readily seeps through to the sheet of wood, contaminating it and even changing its outer appearance.
The durability, functionality, appearance of these boards depends on the number of layers of different materials which are used, the type of resin with which they regarding surface 2 are impregnated, an infinite number of combinations thus being possible and only a few providing practical results, such as the combination comprising the object of this invention.
To provide for a better comprehension of the object of this invention, a preferred embodiment thereof, which may be subject to additional changes which do not detract from the fundamentals thereof, is provided in the drawings.
Fig 1 is a cross-section diagram showing the different layers which compose the board comprising the object of this invention.
A description is provided in following of one example of a non-limiting embodiment of this invention.
The board has a front side (SA and a back side S2).
As the core (1), a number of packs (known as kraft) of absorbent cellulose sheets impregnated with phenolic resin are used.
In principle, the board is symmetrical, for which reason a description of solely one of the sides will be provided, but the object of this invention takes in the possibility that some component may not be used as a result of its not being necessary, for example, on the back side (S2) - 3 On the core (1) a very thin sheet of wood (3)impregnated in phenolic resin, measuring, for example, 0.8 mm., is set into place.
If this arrangement were to be left as is, a physicochemical exchange would take place between the sheet of wood (3) and the core (1), for example, of pigments from the core (1) to the wood (3), which can be damaging to the wood material and can even give rise to a change in coloring as regards shading and spotting, which would lead to its being a failure, given that its surface can be seen from the outside.
To prevent this, a thin sheet of cellulose (2) impregnated in melamine, which acts as a physicochemical barrier, is placed in between the core (1) and the sheet of wood (3).
On the sheet of wood (3), a pack of shades (4) comprised of thin sheeting is placed, which, according to the needs in each case, can be comprised of one to three sheets of cellulose, each one thereof being impregnated in one of the following resins: melamine, melamine-acrylic, phenol or melamine-phenol. Normally, each one of these thin sheets in said pack (4) are transparent or translucent, it being possible for them to contain pigment-extenders made of silicon dioxide, thus achieving different shades and abrasive strength.
4 One last thin, transparent, acrylic sheet (5) is added to further ensure the properties of physicochemical strength to the environmental conditions.
is also Given that the surface appearance of these boards highly important, during the board pressing process, a thin peel-off sheet (6) is placed over the last thin sheet (5) but is not incorporated into the structure of the board, but rather provides it with the surface finish. A different thin peel-off sheet (6) can be placed on the front side (S,) than on the back side (S2) - The thin peel-off sheet (6) can be chosen from among a matte siliconized finish, a polypropylene or a siliconized gloss in order to respectively achieve a matte, satin or glassy gloss finish.
The finished board is compact approximately 10 mm. in thickness.
Example I
As the core (1), a phenolic kraft 180/290 gr /M2 and the pertinent melamine sheet (2) are used.
The wood sheets (3) are 0.75 --- 0.80 mm. in thickness.
The shade pack (4) is comprised of an thin outer sheet of cellulose impregnated in phenolic resin and of a dark hue, and a thin outer sheet of cellulose impregnated in melamine with a silicon dioxide extender.
and measures The thin, outer, transparent, acrylic sheet with transmittance < 2% at a wave length of 290. 370 mm, and density 1.13 gr/ CM3.
For the peel-off sheet, a thin siliconized glass gloss-finish sheet.
The result is a board measuring approximately 2440 x 1220 x 8 mm. with both sides the equal, smooth, glossy and of a dark hue.
Example II
As the core (1), a phenolic kraft 180/290 gr /M2 and the pertinent melamine sheet (2) are used.
The wood sheets (3) are 0.75--- 0.80 mm. in thickness.
The shade pack (4) is comprised of an thin outer sheet of cellulose impregnated in phenolic resin and of a light hue, and a thin outer sheet of cellulose impregnated in melamine with a silicon dioxide extender.
The thin, outer, transparent, acrylic sheet with transmittance < 2% at a wave length of 290---370 mm, and density 1.13 gr/ CM3.
For the peel-off sheet, a thin sheet of polypropylene is used on both sides (S,) and (S2).
The result is a board measuring approximately 2440 x 1220 x 10 mm. with both sides the equal, smooth, satinfinished and of a light hue.
6

Claims (4)

  1. C L A I M S a of cellulose b 1. Board of those which are comprised of a
    front side and a back side, characterized because it is arranged in consecutive layers out from the center to the front side and out to the back side, consisting of: a core comprised of packs of absorbent sheets impregnated with phenolic resin; a thin sheet of cellulose impregnated in melamine; c) a thin sheet of laminated wood treated with a phenolic resin; d) a pack of shades comprised of one to three thin translucent and/or transparent sheets of cellulose, each of which is impregnated in a resin which can be either melamine, melamine-acrylic, phenolic, or melaminephenolic; e) A thin, transparent, acrylic sheet with a surface finish achieved by means of a thin peel-off sheet applied during the board-pressing process;
  2. 2. Board, as per the preceding claim, characterized because the peel-off sheet can be either a siliconized matte, a polypropylene or a siliconized gloss finish.
  3. 3. Board, as per Claim 1, characterized because a minimum of one of the thin sheets in the shade pack has a silicon dioxide extender.
    7
  4. 4. Board, as per Claim 1, characterized because a minimum of one of the thin sheets in the shade pack has a pigment-extender. -
GB9806132A 1998-03-24 1998-03-24 Board Expired - Fee Related GB2335626B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9806132A GB2335626B (en) 1998-03-24 1998-03-24 Board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9806132A GB2335626B (en) 1998-03-24 1998-03-24 Board

Publications (3)

Publication Number Publication Date
GB9806132D0 GB9806132D0 (en) 1998-05-20
GB2335626A true GB2335626A (en) 1999-09-29
GB2335626B GB2335626B (en) 2002-06-26

Family

ID=10829045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9806132A Expired - Fee Related GB2335626B (en) 1998-03-24 1998-03-24 Board

Country Status (1)

Country Link
GB (1) GB2335626B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1118710A2 (en) * 2000-01-12 2001-07-25 DEKODUR GmbH &amp; Co. KG Translucent, resin bonded laminate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102990729B (en) * 2012-12-20 2015-02-04 南宁铁路局房产管理所 Manufacture method of high-strength and clear-water full-eucalyptus film-sticking arc-shaped gluing building template

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310872A1 (en) * 1975-05-15 1976-12-10 Fedke Ohg Fabrik Magnetischer Panel with phenolic resin-impregnated paper layers - for interior decoration, for use as partitions, for construction of schools, etc.
EP0056864A2 (en) * 1981-01-19 1982-08-04 Formica Corporation High pressure decorative laminates containing an air-laid web of fibers and filler and method of producing same
WO1990014226A1 (en) * 1989-05-17 1990-11-29 Resopal Gmbh Process for the manufacture of decorative laminate plate
US5229217A (en) * 1988-12-05 1993-07-20 Resopal Gmbh Decorative high-pressure laminate and a process for producing a surface layer thereon
EP0575722A2 (en) * 1992-06-23 1993-12-29 Resopal Gmbh Decorative high-pressure laminate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2310872A1 (en) * 1975-05-15 1976-12-10 Fedke Ohg Fabrik Magnetischer Panel with phenolic resin-impregnated paper layers - for interior decoration, for use as partitions, for construction of schools, etc.
EP0056864A2 (en) * 1981-01-19 1982-08-04 Formica Corporation High pressure decorative laminates containing an air-laid web of fibers and filler and method of producing same
US5229217A (en) * 1988-12-05 1993-07-20 Resopal Gmbh Decorative high-pressure laminate and a process for producing a surface layer thereon
WO1990014226A1 (en) * 1989-05-17 1990-11-29 Resopal Gmbh Process for the manufacture of decorative laminate plate
EP0575722A2 (en) * 1992-06-23 1993-12-29 Resopal Gmbh Decorative high-pressure laminate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1118710A2 (en) * 2000-01-12 2001-07-25 DEKODUR GmbH &amp; Co. KG Translucent, resin bonded laminate
EP1118710A3 (en) * 2000-01-12 2002-06-19 DEKODUR GmbH &amp; Co. KG Translucent, resin bonded laminate

Also Published As

Publication number Publication date
GB9806132D0 (en) 1998-05-20
GB2335626B (en) 2002-06-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100324