RU2808051C1 - Method for manufacturing corrugated veneer panel - Google Patents

Abstract

FIELD: woodworking industry.

SUBSTANCE: invention relates to the production of joinery and construction products from wood materials. The outer and inner layers are prepared by deforming their opposite end areas. Two bends are made at one end to form a step protruding outward. At the other end, two bends are made to form a step going inward. Moreover, the distance between adjacent bends is chosen such as to ensure, when assembling the panel, the location between the outer and inner layers of the intermediate layer and the formation of a tenon from the steps protruding outward, and from the steps going inward a groove corresponding in size to the tenon. Veneer sheets are prepared by corrugating them, the outer surfaces of the waves of corrugated veneer are coated with an adhesive composition, an intermediate layer is formed by laying sheets of corrugated veneer on top of each other with a cross arrangement of waves, the intermediate layer is placed between the outer and inner layers. While the adhesive composition dries, the outer layer, intermediate layer, and inner layer are pressed against each other.

EFFECT: thermal insulation properties and rigidity of the panel are increased, the consumption of adhesives during the manufacturing process is reduced, the convenience of connecting adjacent panels during assembly is ensured, ensuring the thermal insulation properties of the butt joint, preserving the natural properties of wood.

1 cl, 4 dwg

Description

The invention relates to the woodworking industry, in particular to the production of joinery and construction products from wood materials and can be used as a panel-type cladding material for interior decoration.

A known method for manufacturing corrugated cardboard boards [Lukash A.A., Lukutsova N.P. Corrugated cardboard is an effective thermal insulation material // Construction Materials, 2014. No. 10. P. 24-27] characterized by the presence of air gaps inside. Each layer of corrugated board is assembled from strips (pieces) of corrugated cardboard, so that it is equal to the area of the finished board. Each subsequent layer is assembled from strips, laying them so as to cover the joints between the strips of the previous layer. The layers are connected to each other with a stapler using metal staples.

The disadvantages of the known method of manufacturing corrugated boards are the high labor intensity of the work due to the need to connect a large number of strips with overlapping joints between the strips of the previous layer and the need to use metal staples, the tendency of cardboard to swell quickly even with short-term contact with water, the difficulty of installing adjacent boards due to the lack of mounting grooves along the edges

There is a known method for manufacturing layered wood material made in the form of outer and inner layers glued together, for example, from veneer [Kulikov V.A., Chubov A.B. Technology of glued materials and boards. Moscow: Forest Industry, 1984. P. 8].

The disadvantage of this method of manufacturing layered wood material is the absence of air gaps between adjacent layers, which leads to an increase in the mass of the finished product, an increase in the consumption of adhesives necessary to cover the entire area of the joined elements, and low thermal insulation rates.

There is a known method for manufacturing veneered panels (Wall panels made of veneer for interior decoration // Strir.ru, 2023. - Electronic resource. - Access mode: https://strir.ru/vnutren-otdelka/paneli/shponirovannye (access date 04/20/2023 ) consisting of two main layers. The first layer is the base, made of MDF boards or chipboard sheets, the second layer is decorative, made of veneer. The first layer and the second are connected to each other with an adhesive joint.

The disadvantages of the known method for manufacturing veneer panels are the need to use dissimilar materials in production such as MDF boards, chipboard sheets, poor thermal insulation properties, low rigidity, and the difficulty of installing adjacent panels due to the lack of mounting grooves along the edges.

There is a known method for manufacturing a cellular plywood board [Description of patent RU 2252865. Method of gluing wood laminated materials. Announced 12/08/2003, published 05/27/2005] consisting of several layers. When manufacturing a cellular plywood board made in the form of glued outer and inner layers, each inner layer is made of parallel strips of material placed at intervals. Each previous layer is the basis for the subsequent layer, the stripes of which are placed at an angle to the stripes of the previous one, while starting from the third inner layer, the stripes are positioned offset relative to the stripes of the first inner layer. The interval between stripes is set less than the width of the strip, and the offset value is less than the difference between the width of the strip and the interval.

The disadvantages of the known method of manufacturing cellular plywood boards are high material intensity and labor intensity of production due to the need to use a large number of strips laid in a certain way relative to each other, large mass, poor thermal insulation properties, difficulty in installing adjacent panels due to the lack of mounting grooves along the edges, low rigidity of plywood slabs

The closest in essence and taken as a prototype is the method of manufacturing a plywood panel [Description of patent RU 193354. Plywood panel. Announced 06/10/2019, published 10/25/2019] formed by sequential laying from bottom to top: a dry longitudinal sheet of peeled veneer; a transverse sheet of peeled veneer with glue applied on both sides; lattice structure of the inner layer made of slats from formatted plywood trims; a transverse sheet of peeled veneer with glue applied on both sides; dry longitudinal sheet of peeled veneer.

The disadvantage of the known method of manufacturing plywood panels is the high complexity of the manufacturing process due to the need to manufacture elements of the lattice structure and connecting them to each other, the high consumption of adhesive for fastening the elements of the lattice structure, large mass, poor thermal insulation properties due to the presence of a large number of “cold bridges” in in the form of elements of a lattice structure, the complexity of installing adjacent panels due to the lack of mounting grooves along the edges and high heat loss through the joints of adjacent panels due to the absence of a barrier to the direct movement of air flow.

The technical result of the method for manufacturing a corrugated veneer panel is to obtain a product with increased thermal insulation properties and high rigidity, low consumption of adhesives during the manufacturing process, ease of joining adjacent panels during assembly, ensuring the thermal insulation properties of the butt seam, preserving the natural property of wood, characterized as the ability to “breathe” .

The technical result is achieved by the fact that in the method of manufacturing a corrugated veneer panel, characterized by preparing the outer and inner layers by deforming their opposite end areas, two bends are made from one end to form a step protruding outward, and from the other end two bends are made to form a step extending inward, and the distance between adjacent bends is chosen such as to ensure that when assembling the panel, the location between the outer and inner layers of the intermediate layer and the formation of a tenon from the steps protruding outward, and from the steps extending inwards a groove corresponding in size to the tenon, veneer sheets are prepared by corrugating it, the outer surfaces of the corrugated waves The veneer is coated with an adhesive composition, an intermediate layer is formed by laying sheets of corrugated veneer on top of each other with a cross arrangement of waves, the intermediate layer is placed between the outer and inner layers, while the adhesive composition dries, the outer layer, the intermediate layer, and the inner layer are pressed against each other.

In fig. Figure 1 shows a diagram of the implementation of a method for manufacturing a corrugated veneer panel.

In fig. Figure 2 shows the inner layer of the corrugated veneer panel.

In fig. Figure 3 shows a view of a corrugated veneer panel with a cut out of one fourth part, obtained using the proposed method.

In fig. Figure 4 shows a top view of two corrugated veneer panels connected together, obtained using the proposed method.

The method for manufacturing a corrugated veneer panel involves preparing the outer 1st and inner 2nd layers by deforming their opposite end areas; on each layer, two bends 3, 4 are made from one end to form a step 5 protruding outward. From the other end, two bends 6, 7 are made to form an outgoing step inside the step 8. The distance between adjacent bends 3 and 4, 6 and 7 is chosen so as to ensure, when assembling the panel, the location between the outer 1 and inner 2 layers of the intermediate layer 9 and the formation of a tenon from the steps 5 protruding outward, and a groove from the steps 8 extending inward corresponding to the size of the spike. To make the intermediate layer 9, veneer sheets 10, 11 are prepared by corrugating it, the outer surfaces of the corrugated veneer waves are coated with an adhesive composition. An intermediate layer is formed by laying sheets of corrugated veneer on top of each other with a cross pattern of waves. The intermediate layer 9 is placed between the outer 1 and inner 2 layers. While the adhesive composition dries, the outer layer, intermediate layer, and inner layer are pressed against each other.

The method of manufacturing a corrugated veneer panel is implemented as follows. The required number of veneer sheets are produced. By mechanical deformation after preliminary steaming, an outer step 5 is formed from one end on the sheets that perform the function of the outer and inner layers, and an internal step 8 from the other. By mechanical deformation after preliminary steaming, the veneer sheets used in the manufacture of the intermediate layer are given a corrugated shape. An adhesive composition is applied to the outer surfaces of the corrugated veneer waves. An intermediate layer is formed by laying sheets of corrugated veneer on top of each other with a cross pattern of waves. The intermediate layer 9 with an adhesive composition applied to the outer surfaces of the waves is placed between the outer 1 and inner 2 layers, while the outer and inner layers are combined so that their outer steps 5 coincide. While the adhesive composition dries, the outer layer, the intermediate layer, and inner layer to each other.

By making the inner layer of corrugated veneer sheets, laid with a cross pattern of waves on adjacent sheets, air pockets are created that increase the thermal insulation properties of the panel. Thanks to the laying of corrugated veneer sheets in the inner layer with a cross pattern of waves, equal strength and rigidity of the structure in different directions will be ensured, while reducing the total weight of the panel compared to analogues. Laying corrugated veneer sheets in the inner layer with a cross arrangement of waves promotes point contact of adjacent layers, which will ensure a minimum number of cold “bridges” and will help improve thermal insulation properties compared to analogues that have a large area of “cold bridges”. This arrangement of corrugated sheets allows the adhesive composition to be applied only to the crests of their waves, which will help minimize the use of adhesives compared to analogues and make corrugated panels highly environmentally friendly. The main area of the veneer sheets will not be coated with an adhesive composition, which will preserve the natural properties of wood, characterized as the ability to “breathe”.

If it is necessary to use several panels together, adjacent panels are connected by placing the tongue of one panel in the groove of another.

Due to the fact that from the opposite end areas of the outer and inner layers, two bends are made from one end to form a step protruding outward, and from the other end two bends are made to form a step extending inward, and the distance between adjacent bends is chosen so as to ensure that when assembling the panel The arrangement between the outer and inner layers of the intermediate layer and the formation of a tenon from the steps protruding outward, and from the steps extending inwards a groove corresponding in size to the tenon, ensures the convenience of connecting several panels to each other while eliminating heat loss through this connection.

Claims (1)

A method for manufacturing a corrugated veneer panel, characterized by preparing the outer and inner layers by deforming their opposite end areas, two bends are made from one end to form a step protruding outwards, from the other end two bends are made to form a step extending inwards, and the distance between adjacent bends is chosen such that In order to ensure, when assembling the panel, the location between the outer and inner layers of the intermediate layer and the formation of a tenon from the steps protruding outwards, and from the steps extending inwards a groove corresponding to the size of the tenon, veneer sheets are prepared by corrugating it, the outer surfaces of the waves of corrugated veneer are coated with an adhesive composition, an intermediate is formed layer by laying sheets of corrugated veneer on top of each other with a cross arrangement of waves, the intermediate layer is placed between the outer and inner layers, while the adhesive composition dries, the outer layer, intermediate layer, and inner layer are pressed against each other.