Method for producing a wood product by means of hot pressing and use of method

Abstract

A Method of producing a wooden product by means of a molding hot-pressing from a wooden blank which has one or several sections (A, B, C, D). Wherein as a material is selected an optional form of sawn timber or another timber, which is preferably selected from the group consisting of fresh sawn timber, dried timber, saw-surfaced lumber, planed timber, heat-treated timber, sodium silicate water-glass impregnated or salt impregnated or otherwise impregnated timber; wherein molding hot-pressing is performed essentially in a single-stage production process, which includes drying and molding hot-pressing of the wooden blank and essentially concurrent treating of the wooden blank both by binders of the wood itself and by treating chemicals and/or treating materials added in the production process which are selected from the group consisting of surface treatment agents, excipients, primers, impregnating agents, adhesives, adhesive films, adhesive gauzes; wherein the treatment chemicals are attached to the production process by using a hot-pressing pressing plate etc., pressing tool or pressing surface; and wherein the wood material, and binders thereof as well as the treating chemicals are allowed to adapt/move in relation to each other in the cooling phase of the production process until the locking phase, whereby the product is completed.

Claims

1. A method of producing a wooden product by means of a molding hot-pressing from a wooden blank which has one or several sections, wherein a material is selected from the group consisting of fresh sawn timber, dried timber, saw-surfaced lumber, planed timber, heat-treated timber, sodium silicate water-glass impregnated or salt impregnated or otherwise impregnated timber; wherein molding hot-pressing is performed essentially in a single-stage production process, which includes drying and molding hot-pressing of the wooden blank and essentially concurrent treating of the wooden blank both by binders of the wood itself and by treating chemicals or materials added in the production process which are selected from the group consisting of surface treatment agents, excipients, primers, impregnating agents, adhesives, adhesive films, adhesive gauzes, wherein the treatment chemicals are attached to the production process by using a hot-pressing pressing plate, pressing tool, or pressing surface; wherein moisture, temperature, vapor pressure, use of binders, and treatment chemicals or materials are monitored and optimized from inside of the blank by discharge outwards from the ends of the blank and by pressure pressing against the surfaces of the wooden blank; and wherein the wood material, and binders thereof as well as the treating chemicals are allowed to adapt and move in relation to each other in the cooling phase of the production process until the locking phase, whereby the product is completed.

2. The method according to claim 1, wherein the pressing is subjected mainly to a surface portion of the wooden blank, which is also compacted by the surface treatment.

3. The method according to claim 1, wherein surfaces to be bonded are molded by hot-pressing to comply with structured surfaces according to the topography of the timber.

4. The method according to claim 1, wherein the product is provided by means of the molding hot-pressing with a smooth surface, with a surface topography of the timber, or with surface with a desired embossed texture pattern is provided.

5. The method according to claim 1, characterized by the molding hot-pressing in the direction of the wooden blanks for extending the length of the product and/or for form-pressing ends of the product.

6. A use of the method according to claim 1 for the manufacture of a product selected from the group consisting of: different pillar, beam, timbers, wall, intermediate floor, door, window, outer cladding, decking, gardening, inner cladding, flooring, laminated wood, plate elements and components thereof with one or several sections.

7. The use according to claim 6, for the manufacture of a wooden product from sawn timber or another timber selected from a group consisting of fresh sawn timber, dried timber, saw-surfaced lumber, planed timber, heat-treated timber, sodium silicate water-glass impregnated or salt impregnated or otherwise impregnated timber.

8. The use according to claim 6 for providing at least one smooth surface, a surface with a topography of the timber, or a surface with a desired embossed texture pattern by means of the hot-pressing pressing surface.

9. The use of the method according to claim 1 wherein films and/or gauzes are attached to the surface of the product by means of the hot-pressing.

10. A method of producing a wooden product by means of a molding hot-pressing from a wooden blank which has one or several sections, wherein a material is selected from the group consisting of fresh sawn timber, dried timber, saw-surfaced lumber, planed timber, heat-treated timber, sodium silicate water-glass impregnated or salt impregnated or otherwise impregnated timber; wherein the molding of the wooden blank by hot-pressing, treatment of the wooden blank with binders of the wood itself and treating chemicals or treating materials, and attachment of the treatment chemicals to the wooded blank through a hot pressing plate, pressing tool, or pressing surface is performed in a substantially one-step production process, wherein the treatment chemicals are selected from the group consisting of surface treatment agents, excipients, primers, impregnating agents, adhesives, adhesive films, adhesive gauzes; wherein the wood material, wood binders, and treating chemicals are allowed to adapt and move in relation to each other in the cooling phase of the production process until the locking phase, whereby the product is completed; and wherein moisture, temperature, vapor pressure, use of binders, and treatment chemicals or materials are monitored and optimized from inside of the blank by discharge outwards from the ends of the blank and by pressure pressing against the surfaces of the wooden blank.

11. The method according to claim 10, wherein the pressing is subjected mainly to a surface portion of the wooden blank, which is also compacted by the surface treatment.

12. The method according to claim 10, wherein surfaces to be bonded are molded by hot-pressing to comply with structured surfaces according to the topography of the timber.

13. The method according to claim 10, wherein the product is provided by means of the molding hot-pressing with a smooth surface, with a surface topography of the timber, or with surface with a desired embossed texture pattern is provided.

14. The method according to claim 10, characterized by the molding hot-pressing in the direction of the wooden blanks for extending the length of the product and/or for form-pressing ends of the product.

15. A use of the method according to claim 10 for the manufacture of a product selected from the group consisting of: different pillar, beam, timbers, wall, intermediate floor, door, window, outer cladding, decking, gardening, inner cladding, flooring, laminated wood, plate elements and components thereof with one or several sections.

16. The use according to claim 15, for the manufacture of a wooden product from sawn timber or another timber selected from a group consisting of fresh sawn timber, dried timber, saw-surfaced lumber, planed timber, heat-treated timber, sodium silicate water-glass impregnated or salt impregnated or otherwise impregnated timber.

17. The use according to claim 15 for providing at least one smooth surface, a surface with a topography of the timber, or a surface with a desired embossed texture pattern by means of the hot-pressing pressing surface.

18. The use of the method according to claim 10 wherein films and/or gauzes are attached to the surface of the product by means of the hot-pressing.

Description

(1) The present invention will be described below with reference to the accompanying drawing, which illustrates equipment and a wooden blank suitable for implementing the method and uses of the present invention. In the drawing,

(2) FIG. 1 presents a raw wood sawing pattern,

(3) FIG. 2 presents an exemplary wooden blank having several sections and assembled suitable for hot-pressing the final product that is a wooden pillar, and

(4) FIG. 3 presents an exemplary final product hot-pressed from wooden blank having several sections and central cavity.

(5) The method according to the preferred embodiment of the invention for producing a wooden product from a wooden blank having one or several sections A, B, C, D by means of a hot-pressing is performed substantially in a one-step production process which comprises molding of the wooden blank by hot-pressing and substantially the same time treatment of the wooden blank both by means of wood's own binders and by added treating chemicals and/or materials selected from group consisting of surface treatment agents, excipients primer agents, impregnating products, adhesive agents, adhesive films and glue gauzes.

(6) During implementation of the production process, it is preferred that the wood material and its binders as well as treatment chemicals may live/move in relation to each other until the locking at the cooling stage of the production process, whereby the product is completed. At the production process treatment chemicals can be bonded by using a hot-pressing pressing plate or a corresponding pressing tool or pressing surface.

(7) In a production process the material to be treated may be selected quite freely. Material may be selected from the group consisting of a sawn timber or another timber in an optional form, for example, saw fresh or dried timber; saw surfaced timber; planed timber; heat treated timber; water-glass timber; or salt impregnated timber.

(8) In a preferred embodiment of the present invention for providing a compression, the pressing is subjected mainly to a surface portion of the product blank, which may be compacted by the surface treatment in this connection.

(9) During the substantially one-step production process according to the invention among other things moisture, temperature, vapor pressure, use of binders and treatment chemicals/materials can be monitored and optimized from inside 2 of the blank by means of discharge outwards from the ends of the blank and by means of the pressing pressure against the surfaces of the wooden blank.

(10) When the single-step production process of the present invention is applied, the surfaces to be bonded are formed by the hot-pressing to comply with structured surfaces according to the topography of the timber. In this case, the advantage is that the surfaces are molded and dimensioned to correspond substantially each other, whereby the total areas of the facing surfaces to be bonded are significantly larger than what are an areas of sawn or planed surfaces. In this connection, however, it is emphasizes that by using in the one-step production process according to the present invention, a suitable pressing surface it becomes possible to form a smooth surface or the outer surface corresponding a timber topography or any outer surface having a desired embossed texture pattern.

(11) The method of the present invention by means of which is carried out the substantially one-step production process, may be used for the manufacture of a product selected from the group consisting of: different pillar, beam, timbers, wall, intermediate floor, door, window, outer cladding, decking, gardening, inner cladding, flooring, laminated wood plate, kitchen cabinets, and furniture products/components. In this case, the sawn or another timber of an optional form to be used in the manufacture of the product can be selected from the group consisting of: sawn timber or other timber in an optional form, for example, saw fresh or dried timber; sawn timber surface; planed timber; heat treated wood; water glass timber; or salt impregnated wood.

(12) Using the method according to the present invention for implementing the substantially one-step production process, it is possible to monitor and control during the process among other things the use of binders and treatment chemicals/materials from inside 2 of the blank by means of the discharge occurring outwards from the ends of the blank out of emissions, and by means pressing pressure against the blank surfaces.

(13) For example, some preferred uses of the present invention are: the use for providing to the product at least one smooth surface, a surface corresponding to wood topography or surface with a desired embossed texture pattern by means of the hot-pressing pressing surface; and the use of attaching the films and/or gauzes surface of the product by hot-pressing.

(14) The present invention has been described above only by means of few preferred embodiment thereof. Naturally, this is intended or desired to limit the present invention, but many alternatives and variations functionally equivalent are possible within the scope defined by the scope of the accompanying claims. Thus and relating to the present invention, it is further stated for the good sake of order as follows.

(15) During the pressing phase, a structuring of the glue seam of the surface of final product can be increased by increasing the pressing pressure and especially the temperature of the target area, whereby the surface is squeezed more. The structuring will also grow, with the knots in the wood, and what more powerfully and helically differ from each other summerwood/springwood and what whorls are summerwood and springwood. A structured surface of the final product has particular value, e.g. for terrace board design as a slip resistance surface. One effective coating material for the terrace board is paraffin wax. A side pressing tool may serve a simple elastic or hard mat or list, e.g. mat or list of plastic. Product blanks that in parallel on flat plate with the slot mats or lists there between are pressed accurately to the same sum of widths measurement is not material. E.g. a plastic mat or list prevents the sticking of the side surfaces to each other because of effects of surface treatments agents and wood's own bonding agents.

(16) It is possible to obtain a good flame retardant to a wooden massive product by hot-pressing a paste being composed of non-combustible materials, i.e. minerals, as well as of water-glass functioning as binders and/or of plastic on the surface of the product. Powders may be of nano-dimensional category to obtain additional features of the nano-technology. Powders of the nano-dimensional category may carry the paste deep into the wood. It is also essential at that same there achieved a treatment which brings even conventional the product features.