EP1389251A1 - Method for curving plasterboard panels, and component thus obtained - Google Patents

Method for curving plasterboard panels, and component thus obtained

Info

Publication number
EP1389251A1
EP1389251A1 EP02771654A EP02771654A EP1389251A1 EP 1389251 A1 EP1389251 A1 EP 1389251A1 EP 02771654 A EP02771654 A EP 02771654A EP 02771654 A EP02771654 A EP 02771654A EP 1389251 A1 EP1389251 A1 EP 1389251A1
Authority
EP
European Patent Office
Prior art keywords
curving
panels
cardboard
layers
plasterboard panels
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
EP02771654A
Other languages
German (de)
French (fr)
Other versions
EP1389251B1 (en
Inventor
Livio Serafini
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.)
Eurosistemi Italia Srl
Original Assignee
Eurosistemi Italia Srl
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11442423&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1389251(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eurosistemi Italia Srl filed Critical Eurosistemi Italia Srl
Publication of EP1389251A1 publication Critical patent/EP1389251A1/en
Application granted granted Critical
Publication of EP1389251B1 publication Critical patent/EP1389251B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • E04C2/04—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 concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/043—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 concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of plaster
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/002—Producing shaped prefabricated articles from the material assembled from preformed elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
    • B28B11/10—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads by using presses

Definitions

  • the present invention relates to a method for the mass-production of curved components for finishing masonry work or other structures, obtained from normally commercially available flat plasterboard panels, which are already widely used in the building sector for the most disparate uses since in addition to offering good thermal and acoustic insulation they have an appreciable structural strength and are particularly suitable to be completed by simply painting or with any other surface treatment or covering.
  • the plasterboard panels to which the invention relates are those of the most common type, constituted by a sheet or plate of plaster sandwiched between two layers of cardboard.
  • Background Art Currently such panels can be used not only in the original flat shape but also as contoured components which are obtained, by way of a method devised by the same inventor and disclosed in Italian patent application MI 96 A 001586, by bonding together with adhesives two plasterboard panels or two portions of a same folded panel, subjected beforehand to multiple cuts and/or wedge-shaped incisions formed in the cardboard of the faces to be joined and in the layer of plaster in order to be able to fold in a hinge-like fashion, at each one of said cuts and incisions, the intact cardboard of the exposed surfaces of said coupling.
  • the method according to the present invention is as simple as it is novel and inventive and consists in curving and joining simultaneously, in appropriate forming presses, two or more plasterboard panels that are superimposed after adequately spreading the surfaces in contact with a suitable bonding agent, which is preferably water-based in order to impregnate and soften more effectively the layers of cardboard to be bonded in a curved configuration.
  • a suitable bonding agent which is preferably water-based in order to impregnate and soften more effectively the layers of cardboard to be bonded in a curved configuration.
  • Figures 1 and 2 illustrate schematically the method according to the invention by showing, together with the forming press in partial cross- section, two plasterboard panels before and after bonding them in a curved configuration;
  • Figures 3 and 4 illustrate, by way of partial sectional views of the forming press before and during bonding of the two curved panels, additional arrangements for the case in which tighter curves, i.e., having a smaller radius, are required;
  • Figure 5 is a transverse sectional view of the curved component produced with the forming press as shown in Figures 1 and 2;
  • Figure 6 is a transverse sectional view of the curved component produced with the forming press as shown in Figures 3 and 4;
  • Figures 7, 8 and 9 show additional embodiments of components that can be manufactured with the method according to the invention. Ways of carrying out the Invention
  • the plasterboard panels A and B which in the sectional view of Figure 1 are formed respectively by the layers of cardboard 1 and 3 with the interposed plaster sheet 2 and by the layers of cardboard 4 and 6 with the interposed plaster sheet 5, before their clamping between the female mold part C and the male mold part D of the forming press, are spread with vinyl glue or other suitable water-based bonding agent in the layers of cardboard 3 or 4, i.e., in the contact faces of the two panels to be joined by overlapping and compression.
  • the retention time of the pairs of curved panels inside the forming press can be shortened significantly, and production times can be speeded up, by spreading onto the surfaces to be bonded bands or strips of water-based vinyl adhesive alternated with bands or strips of hot-melt adhesive, such as self- curing urea resin in an aqueous solution, which sets more quickly than vinyl adhesive.
  • Figures 3 and 4 show that if the curvature to be imparted by means of the female mold part F and the male mold part G of the molding press is particularly significant or marked, the panels A and B to be curved and bonded simultaneously, after spreading suitable adhesives on the faces 3 and 4 to be joined, are laterally provided, alongside their extension and during their insertion in the forming press, with a flexible metal sheet E, which by being arranged so as to lie on the outside of the curve to be formed, in the specific case in contact with the cardboard layer 6 of the panel B, ensures perfect curving of the panels and a substantially uniform distribution of the radial fractures in the plaster sheets 2 and 5.
  • a further operational advantage, while performing the described method, can be provided, especially in cases where curving is particularly significant or marked, by a plurality of free rollers H which, being arranged at the margins of the cavity of the mold and so that their axes are parallel to the generatrix of the curve, convert into a rolling friction the friction of the flexible metal sheet E or, if said metal sheet is not present, of the plasterboard panels A and B alone when the assembly, pushed by the male mold part or half-mold G, descends forcibly into the mold part or female half-mold F to assume the shape provided in the forming press.
  • the devised method compatibly with the ordinary requirements of compression formation, allows the greatest freedom of choice of radii and extent of the curves ( Figures 5 and 6) and in the succession of curves and countercurves ( Figures 7 and 8) or also in the combination of curved portions with other straight ones ( Figure 9).

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)
  • Making Paper Articles (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Finishing Walls (AREA)

Abstract

Platerboard panels (A, B) formed by layers of cardboard (1,3) with a sandwiched plaster sheet (2) and by layers of cardboard (4,6) with a further sandwiched plaster sheet (5), are clamped between a female half mold part (C) and a male half mold part (D) of a forming press, are spread with vinyl adhesive or other suitable water-based adhesive at the layers of cardboard (3, 4). In each one of the two panels, the plaster sheet (2, 5) is fractured radially and the layer of cardboard (3) on the outside of the curvature is stretched and the layer (4) on the inside is compressed. The bonding of the layer of cardboard (3) of the first panel (A) to the layer of cardboard (4) of the second panel (B) forces the two panels to a permanent, stable equilibrium of the respective opposite curving tensions.

Description

METHOD FOR CURVING PLASTERBOARD PANELS, AND COMPONENTS THUS OBTAINED Technical Field
The present invention relates to a method for the mass-production of curved components for finishing masonry work or other structures, obtained from normally commercially available flat plasterboard panels, which are already widely used in the building sector for the most disparate uses since in addition to offering good thermal and acoustic insulation they have an appreciable structural strength and are particularly suitable to be completed by simply painting or with any other surface treatment or covering.
The plasterboard panels to which the invention relates are those of the most common type, constituted by a sheet or plate of plaster sandwiched between two layers of cardboard. Background Art Currently such panels can be used not only in the original flat shape but also as contoured components which are obtained, by way of a method devised by the same inventor and disclosed in Italian patent application MI 96 A 001586, by bonding together with adhesives two plasterboard panels or two portions of a same folded panel, subjected beforehand to multiple cuts and/or wedge-shaped incisions formed in the cardboard of the faces to be joined and in the layer of plaster in order to be able to fold in a hinge-like fashion, at each one of said cuts and incisions, the intact cardboard of the exposed surfaces of said coupling.
However, this method, which is already widely appreciated in the building sector, does not allow to produce curved surfaces, which still require casting concrete or plaster in appropriate formwork or the use of elements produced on site with plywood, hardboard or other flexible material. Disclosure of the Invention The method according to the invention arises from the problem of providing the workers in the building sector and in the interior-decoration sector the possibility to easily build, at particularly low cost and without specific manual skills, curved surfaces that are perfectly executed because they are formed by means of prefabricated elements to be installed on site and completed in the same manner required by conventional plasterboard panels.
Generally speaking, the method according to the present invention is as simple as it is novel and inventive and consists in curving and joining simultaneously, in appropriate forming presses, two or more plasterboard panels that are superimposed after adequately spreading the surfaces in contact with a suitable bonding agent, which is preferably water-based in order to impregnate and soften more effectively the layers of cardboard to be bonded in a curved configuration.
Brief description of the drawings In order to better describe the new method and the components obtained thereby, the accompanying drawings show, only by way of non-limitative example:
Figures 1 and 2, illustrate schematically the method according to the invention by showing, together with the forming press in partial cross- section, two plasterboard panels before and after bonding them in a curved configuration;
Figures 3 and 4, illustrate, by way of partial sectional views of the forming press before and during bonding of the two curved panels, additional arrangements for the case in which tighter curves, i.e., having a smaller radius, are required;
Figure 5, is a transverse sectional view of the curved component produced with the forming press as shown in Figures 1 and 2;
Figure 6, is a transverse sectional view of the curved component produced with the forming press as shown in Figures 3 and 4; Figures 7, 8 and 9, show additional embodiments of components that can be manufactured with the method according to the invention. Ways of carrying out the Invention
With reference to the drawings, the plasterboard panels A and B, which in the sectional view of Figure 1 are formed respectively by the layers of cardboard 1 and 3 with the interposed plaster sheet 2 and by the layers of cardboard 4 and 6 with the interposed plaster sheet 5, before their clamping between the female mold part C and the male mold part D of the forming press, are spread with vinyl glue or other suitable water-based bonding agent in the layers of cardboard 3 or 4, i.e., in the contact faces of the two panels to be joined by overlapping and compression.
Such spreading, by impregnating the treated cardboard layers and making them malleable, facilitates their curving, while the plaster sheets 2 and 5, being rigid, undergo a succession of radial fractures 7 that are more or less closely spaced depending on the curving radius, the thickness of said sheets and the consequent difference between the outermost and the innermost circumferences of each sheet.
Continuing pressing of the two curved and superimposed panels A and B, all through the time required for the evaporation of the aqueous base and for the setting of the bonding agent, permanently stabilizes the curving imposed , by the forming press. This occurs because in each one of the two plasterboard panels to be joined the plaster sheet is fractured radially, and the layer of cardboard on the outside of the curve is stretched and the layer on the inside is compressed. Accordingly, the bonding of the cardboard layer 3 of the panel A to the cardboard layer 4 of the panel B forces the two to a permanent, stable, equilibrium of the respective opposite curving tensions, i.e., the contraction tension for the cardboard layer 3 and the elongation tension for the cardboard layer 4.
The retention time of the pairs of curved panels inside the forming press can be shortened significantly, and production times can be speeded up, by spreading onto the surfaces to be bonded bands or strips of water-based vinyl adhesive alternated with bands or strips of hot-melt adhesive, such as self- curing urea resin in an aqueous solution, which sets more quickly than vinyl adhesive.
Figures 3 and 4 show that if the curvature to be imparted by means of the female mold part F and the male mold part G of the molding press is particularly significant or marked, the panels A and B to be curved and bonded simultaneously, after spreading suitable adhesives on the faces 3 and 4 to be joined, are laterally provided, alongside their extension and during their insertion in the forming press, with a flexible metal sheet E, which by being arranged so as to lie on the outside of the curve to be formed, in the specific case in contact with the cardboard layer 6 of the panel B, ensures perfect curving of the panels and a substantially uniform distribution of the radial fractures in the plaster sheets 2 and 5.
A further operational advantage, while performing the described method, can be provided, especially in cases where curving is particularly significant or marked, by a plurality of free rollers H which, being arranged at the margins of the cavity of the mold and so that their axes are parallel to the generatrix of the curve, convert into a rolling friction the friction of the flexible metal sheet E or, if said metal sheet is not present, of the plasterboard panels A and B alone when the assembly, pushed by the male mold part or half-mold G, descends forcibly into the mold part or female half-mold F to assume the shape provided in the forming press.
Although the illustrated examples of embodiment show the production of curved elements by joining two plasterboard panels by compression, this does not rule out the possibility of coupling even more than two panels so as to meet enhanced requirements of insulation, mechanical strength or other requirements.
As regards also the profiles or shapes to be produced, the devised method, compatibly with the ordinary requirements of compression formation, allows the greatest freedom of choice of radii and extent of the curves (Figures 5 and 6) and in the succession of curves and countercurves (Figures 7 and 8) or also in the combination of curved portions with other straight ones (Figure 9).
Clearly, without altering the general characteristics that have been illustrated and described, the method according to the invention and the elements provided thereby are susceptible of further modifications and variations, which are in any case within the scope of the appended claims.
The disclosures in Italian Patent Application No. FO2001A000015 from which this application claims priority are incorporated herein by reference.

Claims

1. A method for curving plasterboard panels, mainly comprising the steps of: curving and joining simultaneously, by pressing in suitable forming presses, two or more superimposed plasterboard panels, each formed by a sheet of plaster sandwiched between two layers of cardboard, after previously spreading a suitable bonding agent, which is preferably water- based, in order to impregnate and soften more effectively the layers of cardboard to be mated and bonded in a curved configuration.
2. The curving method according to claim 1, characterized in that the spreading step of the water-based bonding agent comprises impregnating the cardboard layers which are to be bonded so as to make them malleable, and to facilitate curving thereof, while the curving step comprises for the adjacent plaster sheets, which are rigid, formation of a succession of radial fractures which divaricate toward the outside of the curve at intervals that vary depending on the set radius of curvature and the thickness of said plaster sheets.
3. The curving method according to the preceding claims, characterized in that the pressing step carried out for the plasterboard panels to be curved and joined in a superimposed configuration, is performed for the time required for the evaporation of the aqueous base and for the setting of the adhesive, and comprises stabilization of the curving imparted by the forming press, by subjecting the layers of cardboard of each plasterboard panel to a deformation, which is a stretching deformation for the layer on the outside of the curve and a compression deformation for the layer on the inside of said curve, to reach permanent, stable, equilibrium of the opposite curving tensions of the two layers of cardboard that belong to different panels and are directly subjected to affect the bonding.
4. The curving method according to the preceding claims, characterized in that it comprises spreading in said spreading step the plasterboard panels to be joined in a curved configuration for bonding, with vinyl adhesive or other suitable water-based bonding agent.
5. The curving method according to claims 1, 2 and 3, characterized in that the retention time of the plasterboard panels inside the forming press during said pressing step is reduced significantly by way of an additional spreading step comprising spreading onto the surfaces to be joined bands or strips of water-based vinyl adhesive alternated with bands or strips of hot- melt glue, such as self-curing urea resin in aqueous solution, which has shorter setting times than the vinyl adhesive.
6. The curving method according to the preceding claims, characterized in that the curving step further comprises, in order to ensure even and exact curving of the plasterboard panels to be joined and a substantially uniform distribution of the radial fractures in the plaster sheets of said panels, during insertion of said panels between the female mold part and the male mold part of the forming press, arranging laterally, alongside said panels, a flexible metal sheet, which is arranged so that after the pressing step, the metal sheet lies on the outside of the curve formed by the plasterboard panels.
7. The curving method according to the preceding claims, characterized in that it further comprises the step of providing a plurality of free rollers, arranged at the margins of the cavity of the female half mold with axes thereof parallel to the generatrix of the curvature of the half mold, convert into rolling friction any of the friction with the flexible metal sheet E or, with the plasterboard panels A and B alone, upon pushing of the panel assembly by action the male half mold part G, to forcibly descend into the half mold F in order to assume the shape that is preset in the forming press.
8. Plasterboard panels curved by way of a method as set forth in any of the claims 1-9.
9. The plasterboard panels of claim 8, characterized in that they are constituted by curved components, formed by the compression bonding of two or more superimposed plasterboard panels (A,B), each comprising at least one sheet of plaster (2,5) interposed between two layers of cardboard (1,3,4,6), having curved portions of profiles of different shapes, said plaster sheets (2,5) comprising a succession of radial fractures which divaricate toward the outside of the curvature thereof and are arranged at intervals that vary depending on the radius of curvature and the thickness of said plaster sheets (2,5).
EP02771654A 2001-05-24 2002-05-22 Method for curving plasterboard panels, and component thus obtained Expired - Lifetime EP1389251B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT2001FO000015A ITFO20010015A1 (en) 2001-05-24 2001-05-24 METHOD FOR CURVING PLASTERBOARD PANELS AND ELEMENTS SO OBTAINED.
ITFO20010015 2001-05-24
PCT/EP2002/005613 WO2002095157A1 (en) 2001-05-24 2002-05-22 Method for curving plasterboard panels, and component thus obtained

Publications (2)

Publication Number Publication Date
EP1389251A1 true EP1389251A1 (en) 2004-02-18
EP1389251B1 EP1389251B1 (en) 2005-11-09

Family

ID=11442423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02771654A Expired - Lifetime EP1389251B1 (en) 2001-05-24 2002-05-22 Method for curving plasterboard panels, and component thus obtained

Country Status (11)

Country Link
EP (1) EP1389251B1 (en)
JP (1) JP2004525015A (en)
CN (1) CN1274929C (en)
AT (1) ATE309427T1 (en)
CA (1) CA2447701C (en)
DE (1) DE60207238T2 (en)
DK (1) DK1389251T3 (en)
ES (1) ES2253560T3 (en)
IT (1) ITFO20010015A1 (en)
RU (1) RU2286251C2 (en)
WO (1) WO2002095157A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFO20010015A1 (en) 2001-05-24 2002-11-24 Eurosistemi S R L METHOD FOR CURVING PLASTERBOARD PANELS AND ELEMENTS SO OBTAINED.
ITBO20080553A1 (en) * 2008-09-11 2010-03-12 Cierre Di Celli Roberto METHOD TO REALIZE A CURVED PANEL AND PANEL SO OBTAINED
DE102009047917B4 (en) 2009-10-01 2015-08-27 Fermacell Gmbh Multilayer, curved lightweight building board and method for its production
CN102059906B (en) * 2010-11-24 2013-05-01 南安市贝斯泰石业有限公司 Photo-permeable curved face stone and production method thereof
CN104947847A (en) * 2015-06-15 2015-09-30 深圳赤晓建筑科技有限公司 Arc-shaped sandwich board, arc-shaped wall body and production method of arc-shaped sandwich board
EP3826815A1 (en) * 2018-07-25 2021-06-02 Knauf Gips KG Method and device for forming a shaped gypsum plasterboard

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3176950B2 (en) * 1991-03-30 2001-06-18 チヨダウーテ株式会社 Method for producing gypsum board with uneven pattern
JPH04325201A (en) * 1991-04-25 1992-11-13 Yoshino Sekko Kk Molding method for curved surface board and mold frame for curbed surface formation
JPH08187817A (en) * 1995-01-12 1996-07-23 Chichibu Onoda Cement Corp Building material
IT1283521B1 (en) 1996-07-26 1998-04-21 Profil Gips Di Serafini Livio METHOD FOR THE CREATION OF FINISHING ELEMENTS FOR MASONRY AND SIMILAR WORKS FROM MULTILAYER SLABS AND ELEMENTS SO OBTAINED
IT1283378B1 (en) * 1996-07-31 1998-04-17 Xiloform S P A PROCEDURE AND MACHINE FOR THE MANUFACTURE OF CURVED PLYWOOD PROFILES, PARTICULARLY FOR COVERING PIPES AND
ITFO20010015A1 (en) 2001-05-24 2002-11-24 Eurosistemi S R L METHOD FOR CURVING PLASTERBOARD PANELS AND ELEMENTS SO OBTAINED.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02095157A1 *

Also Published As

Publication number Publication date
CA2447701A1 (en) 2002-11-28
ITFO20010015A0 (en) 2001-05-24
JP2004525015A (en) 2004-08-19
ITFO20010015A1 (en) 2002-11-24
RU2003137009A (en) 2005-05-27
DK1389251T3 (en) 2006-02-06
DE60207238T2 (en) 2006-03-23
CN1511214A (en) 2004-07-07
WO2002095157A1 (en) 2002-11-28
EP1389251B1 (en) 2005-11-09
CN1274929C (en) 2006-09-13
DE60207238D1 (en) 2005-12-15
CA2447701C (en) 2008-08-19
ATE309427T1 (en) 2005-11-15
RU2286251C2 (en) 2006-10-27
ES2253560T3 (en) 2006-06-01

Similar Documents

Publication Publication Date Title
US4078959A (en) Curved laminate panels
JP2007512977A5 (en)
US3137604A (en) Honeycomb structure and process of manufacture
KR890700473A (en) Honeycomb panel
CA2407932A1 (en) Honeycomb structure
EP1389251B1 (en) Method for curving plasterboard panels, and component thus obtained
JP2001079969A (en) Thermoformable laminated sheet
US3700522A (en) Process of making honeycomb panels
US20040148907A1 (en) Method for curving platerboard panels, and components thus obtained
JPS638254B2 (en)
CN108527945A (en) A kind of flexible honeycomb and manufacturing method of heart cell
US4199389A (en) Method of making curved laminated panels
JP2002210709A (en) Laminated lumber using bamboo and its manufacturing method
JP3370852B2 (en) Honeycomb panel having a curvature and a method of manufacturing the same
EP1667802A1 (en) A method of producing honeycomb structure
JPH0747509A (en) Laminated plywood and manufacture thereof
JP7389699B2 (en) wood material
JPS61185436A (en) Non-combustible panel and manufacture thereof
KR100785328B1 (en) A manufacturing method of plywood for pattern wood
JPH0141789B2 (en)
JP3204563B2 (en) Aramid sheet and honeycomb structure
JPH09290470A (en) Honeycomb core and its manufacture
JPH07156318A (en) Honeycomb core
JPH042645A (en) Inorganic fiber plate
JP2002067212A (en) Building laminated board and method for manufacturing the same

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20031114

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051109

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051109

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051109

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051109

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051109

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051109

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60207238

Country of ref document: DE

Date of ref document: 20051215

Kind code of ref document: P

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060209

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20050403865

Country of ref document: GR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060410

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060522

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060522

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2253560

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLAZ Examination of admissibility of opposition: despatch of communication + time limit

Free format text: ORIGINAL CODE: EPIDOSNOPE2

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

PLBA Examination of admissibility of opposition: reply received

Free format text: ORIGINAL CODE: EPIDOSNOPE4

26 Opposition filed

Opponent name: PROFILGESSI S.R.L

Effective date: 20060809

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060522

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20070524

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051109

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060522

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051109

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20090514

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20090513

Year of fee payment: 8

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20110615

Year of fee payment: 10

Ref country code: ES

Payment date: 20110519

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20110531

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110530

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120522

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130131

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60207238

Country of ref document: DE

Effective date: 20121201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121201

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20130820

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120523