WO2014041576A1 - Procédé pour produire un produit composite souple comportant une couche de bois - Google Patents

Procédé pour produire un produit composite souple comportant une couche de bois Download PDF

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Publication number
WO2014041576A1
WO2014041576A1 PCT/IT2013/000243 IT2013000243W WO2014041576A1 WO 2014041576 A1 WO2014041576 A1 WO 2014041576A1 IT 2013000243 W IT2013000243 W IT 2013000243W WO 2014041576 A1 WO2014041576 A1 WO 2014041576A1
Authority
WO
WIPO (PCT)
Prior art keywords
wood
sheets
layer
adhesive
organic solvents
Prior art date
Application number
PCT/IT2013/000243
Other languages
English (en)
Inventor
Monica NICCOLINI
Original Assignee
Filbo Snc Di M. Mauri E B. Nicolini E C.
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 Filbo Snc Di M. Mauri E B. Nicolini E C. filed Critical Filbo Snc Di M. Mauri E B. Nicolini E C.
Priority to EP13801839.5A priority Critical patent/EP2903815A1/fr
Publication of WO2014041576A1 publication Critical patent/WO2014041576A1/fr

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
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary 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
    • B32B21/10—Next to a fibrous or filamentary 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
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/08—Coating on the layer surface on wood 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/026—Wood 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
    • B32B2437/00—Clothing
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/02—Open containers
    • B32B2439/06—Bags, sacks, sachets
    • 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
    • B32B2451/00—Decorative or ornamental articles

Definitions

  • the invention is directed at the wood processing sector, and in particular relates to a process for producing a flexible composite product provided with a layer of wood.
  • wood which is a symbol of sturdiness, has always been used in the building, and in particular in the furnishing, sector, to make solid strong furniture guaranteeing durability.
  • the peculiarity of the wood used in these sectors is that of being flexible, in order to be able to produce "soft" items, without detracting from the aesthetic appearance of the wood.
  • Patent no. 1233469 having Martinuzzo Alberto as applicant discloses a method for producing flexible multi-ply sheets from an external veneer in high quality wood or vegetable tissue.
  • This method provides for application of the veneer to a thin flat sheet made of flexible and thermoformable plastic material by means of the interposing of a layer of thermoformable adhesive material to form, under pressure, a flat laminate with external surfaces devoid of raised areas and/or projections.
  • the prior art method also provides for the application, under pressure, to the entire face of the sheet of plastic material of the flat ply thus obtained, opposite the face to which the veneer is applied, of a cut of fabric through interposing of a layer of thermoformable adhesive material.
  • the degree of flexibility achieved by the wood is due solely to its coupling with the sheet of plastic material.
  • the flexibility is therefore only due to the intrinsic properties of the backing material, but the physical properties of the wood are not modified by the process.
  • the sheet of composite material can be curved, flexed and bent only parallel to the direction of the grain of the wood, while in the direction against the grain it tends to break or crack.
  • the surface of the wood can only be dry cleaned or with the use of damp cloths, but cannot be washed completely in water, as the wood is not treated and isolated to allow it to come into direct contact with running water.
  • the object of the invention is to define a process for producing a flexible composite product provided with a layer of wood that guarantees the maximum flexibility thereof, meaning that it can be stitched and bent in all directions and that the flexible wooden product and the final item produced therewith can be washed completely.
  • Another object of the invention is to define a simple, rapid and inexpensive process that uses safe materials and respects the environment.
  • a two-component varnish comprising a mixture of synthetic resins, organic solvents and pigments to the surface of said sanded sheets, wherein said varnish is obtained by mixing a finishing enamel with a catalyst based on polyisocyanates and a thinner based on a mixture of halogen-free organic solvents.
  • said first adhesive is of polyurethane or vinyl type, water- resistant and thermofusible; while said second adhesive is based on vinyl acetate resins.
  • said two-component varnish is obtained by adding one part of catalyst to seven parts by volume of finishing enamel composed of a mixture of synthetic resins, organic solvents and pigments and diluting the product obtained with 20% of thinner.
  • said method comprises, after the step of gluing said sheets onto said textile fiber backing, the further step of calibrating the sheets of wood obtained, taking them to a thickness of 4/10 of mm.
  • said method comprises, after the step of gluing said sheets onto said textile fiber backing, the further step of gluing said sheets of composite wood obtained to a sheet made of flexible material.
  • said flexible material is chosen from hide, leather, cuoietto leather, eco-leather and fabric.
  • said step of gluing said sheets of composite wood to a sheet made of flexible material comprises the use of universal glue.
  • the invention also relates to a flexible composite product provided with a layer of wood, comprising:
  • said two-component varnish comprises a mixture of synthetic resins, organic solvents and pigments, and is obtained by mixing a finishing enamel with a catalyst based on polyisocyanates, and a thinner based on a mixture of halogen-free organic solvents.
  • the present invention also includes an item produced with a flexible composite product provided with a layer of wood as claimed.
  • the process for producing a flexible composite product provided with a layer of wood according to the invention has many advantages, essentially due to the properties of the materials and of the products applied to the surface of the wood, i.e. the vinyl adhesive and the two-component varnish that act in synergy with each other.
  • the vinyl adhesive used is already widely used with different functions to those of the present invention in the wood and paper industries, prevalently for mounting furniture, gluing tables, frames and wooden structures and in generic common carpentry work.
  • it is instead advantageously used as base coat to prepare for spreading of the subsequent layer of two- component varnish.
  • Said vinyl adhesive advantageously ensures a very high degree of flexibility of the article without any risk of damaging or breaking the sheet of wood.
  • the article even reaches a degree of flexibility as high as 98%.
  • the flexibility is guaranteed in both the direction of the grain of the wood, but surprisingly also in the opposite direction, against the grain.
  • the two-component varnish spread on the vinyl adhesive advantageously produces an opaque effect similar to smooth leather, improves the tactile and optical properties of the backing, and therefore of the sheet of wood on which it is spread, and makes the backing resistant to chemical and physical agents, such as scratches.
  • said varnish completely isolates the layer of wood, protecting it from water and humidity: the product thus obtained can therefore be washed, obtaining maximum cleanliness and is therefore suitable to be used in a wide variety of applications, even to produce fashion and leather items.
  • thermofusible polyurethane or vinyl adhesive interposed between the sheet of wood and the textile fiber backing is water-resistant: the whole composite product is therefore resistant to running water and can be immersed totally therein, without the risk of the layers becoming detached.
  • Figs. 1 and 2 represent, schematically and with proportions intentionally deformed for reasons of clarity, respectively in a cross section and in a partly sectional axonometric view, a flexible composite product provided with a layer of wood produced with the process according to a possible embodiment of the invention;
  • Figs. 3-5 represent, in an axonometric view, some objects produced with the article obtained with the process according to the invention.
  • a flexible composite product 1 provided with a layer of wood.
  • the product is in the form of composite sheet and substantially comprises a sheet of wood 2, a textile fiber backing 3 and a sheet of flexible material 7.
  • the wording sheets of wood 2 is intended without distinction as veneers, both sliced and rotary cut, edge-banding, reconstituted, inlays, etc... obtained from one or more species of wood.
  • said sheet of wood 2 has a thickness of around 6/10 of mm; said textile fiber backing 3 is a fabric or a NW nonwoven fabric; said flexible material 7 can be of various kinds according to application requirements, and for example chosen from hide, leather, cuoietto leather, eco-leather and fabric. Between said sheet of wood 2 and said textile fiber backing 3 there is interposed a layer of a first adhesive 4, made of polyurethane or vinyl, thermofusible and water-resistant.
  • a layer of a second adhesive 5 of vinyl type in aqueous dispersion On the sheet of wood 2 there is provided a layer of a second adhesive 5 of vinyl type in aqueous dispersion.
  • Said vinyl adhesive 5 is based on vinyl acetate resins.
  • This product is characterized by medium viscosity, setting speed with a wide range of adhesion possibilities, and the appearance of the dry film of glue is slightly opalescent.
  • the two-component varnish compound 6 to be applied essentially comprises:
  • a first example of an optimal preparation expressed by volume of said two-component varnish 6 is given by seven parts of finishing enamel and one part of catalyst, the product obtained being diluted with 20% thinner.
  • a second example of preparation expressed in weight of said two- component varnish 6 is:
  • the first step of the process according to the invention consists in providing sheets of wood 2 with a thickness of 6/10 of mm, and of gluing a textile fiber backing 3 onto them by means of a first adhesive 4, of polyurethane or vinyl thermofusible water-resistant type.
  • the composite product 1 is then left to dry before being cold pressed.
  • a second adhesive 5 of vinyl type in aqueous dispersion is spread on said sheets 2, in particular on the free surface of the wood, and left to dry at room temperature for at least one day.
  • a two-component varnish 6 comprising, dosed as described above, a finishing enamel based on a mixture of synthetic resins, organic solvents and pigments, a catalyst based on polyisocyanates, and a thinner comprising a mixture of halogen-free organic solvents.
  • the synergic effect that is created between the adhesive 5 and the two- component varnish 6 determines the particular flexibility of the flexible composite product 1 thus obtained and in particular of the layer of wood.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Moulding By Coating Moulds (AREA)
  • Golf Clubs (AREA)

Abstract

L'invention concerne le domaine du traitement du bois, et porte en particulier sur un procédé pour produire un produit composite souple (1) comportant une couche de bois, lequel procédé comprend les étapes consistant à : - fournir des feuilles de bois (2) avec une épaisseur de 6/10 mm ; - coller lesdites feuilles (2) sur un revers de fibre textile (3) à l'aide d'un premier adhésif résistant à l'eau (4) ; et lequel comprend les étapes supplémentaires consistant à : - étaler un second adhésif vinylique (5) en dispersion aqueuse sur la surface desdites feuilles (2) appliquées audit revers (3) ; - sabler lesdites feuilles (2) revêtues par ledit second adhésif (5) ; - appliquer un vernis à deux composants (6) comprenant un mélange de résines synthétiques, de solvants organiques et de pigments à la surface desdites feuilles sablées (2), ledit vernis (6) étant obtenu par mélange d'un émail de finition avec un catalyseur basé sur des polyisocyanates, et d'un diluant basé sur un mélange de solvants organiques sans halogènes.
PCT/IT2013/000243 2012-09-14 2013-09-12 Procédé pour produire un produit composite souple comportant une couche de bois WO2014041576A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13801839.5A EP2903815A1 (fr) 2012-09-14 2013-09-12 Procédé pour produire un produit composite souple comportant une couche de bois

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITCO2012A000043 2012-09-14
IT000043A ITCO20120043A1 (it) 2012-09-14 2012-09-14 Procedimento per produrre un manufatto composito flessibile provvisto di uno strato di legno

Publications (1)

Publication Number Publication Date
WO2014041576A1 true WO2014041576A1 (fr) 2014-03-20

Family

ID=47138010

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2013/000243 WO2014041576A1 (fr) 2012-09-14 2013-09-12 Procédé pour produire un produit composite souple comportant une couche de bois

Country Status (3)

Country Link
EP (1) EP2903815A1 (fr)
IT (1) ITCO20120043A1 (fr)
WO (1) WO2014041576A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100027476A1 (it) * 2021-10-26 2023-04-26 Sozzi Arredamenti S P A Pannello stratificato in massello di legno e metodo di produzione dello stesso.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960639A (en) * 1971-08-16 1976-06-01 Yodogawa Steel Works, Limited Method of making a laminated metal-based facing
DE3026818A1 (de) * 1980-07-16 1982-02-11 Johannes 4784 Rüthen Schulte Naturfurnier und verfahren zum herstellen eines naturfurniers
US4636548A (en) * 1985-01-30 1987-01-13 Basf Aktiengesellschaft Binders for aqueous primers for wood paints
DE29919712U1 (de) * 1999-11-10 2000-03-30 Rindfleisch, Ursula, 65620 Waldbrunn Holzfurnier-Blattmaterial
WO2003028994A1 (fr) * 2001-09-24 2003-04-10 Decospan N.V. Revetement mural comprenant une couche superieure de bois deplacage
FR2922137A1 (fr) * 2007-10-15 2009-04-17 Faurecia Interieur Ind Snc Procede de revetement d'une piece par une couche de matiere ligneuse, et piece revetue d'une telle couche.
EP2497635A1 (fr) * 2011-03-10 2012-09-12 Augustin Rauch Corps stratifié flexible en bois et son procédé de fabrication

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960639A (en) * 1971-08-16 1976-06-01 Yodogawa Steel Works, Limited Method of making a laminated metal-based facing
DE3026818A1 (de) * 1980-07-16 1982-02-11 Johannes 4784 Rüthen Schulte Naturfurnier und verfahren zum herstellen eines naturfurniers
US4636548A (en) * 1985-01-30 1987-01-13 Basf Aktiengesellschaft Binders for aqueous primers for wood paints
DE29919712U1 (de) * 1999-11-10 2000-03-30 Rindfleisch, Ursula, 65620 Waldbrunn Holzfurnier-Blattmaterial
WO2003028994A1 (fr) * 2001-09-24 2003-04-10 Decospan N.V. Revetement mural comprenant une couche superieure de bois deplacage
FR2922137A1 (fr) * 2007-10-15 2009-04-17 Faurecia Interieur Ind Snc Procede de revetement d'une piece par une couche de matiere ligneuse, et piece revetue d'une telle couche.
EP2497635A1 (fr) * 2011-03-10 2012-09-12 Augustin Rauch Corps stratifié flexible en bois et son procédé de fabrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100027476A1 (it) * 2021-10-26 2023-04-26 Sozzi Arredamenti S P A Pannello stratificato in massello di legno e metodo di produzione dello stesso.

Also Published As

Publication number Publication date
ITCO20120043A1 (it) 2014-03-15
EP2903815A1 (fr) 2015-08-12

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