FI118846B - Manufacturing process for parquet elements and parquet elements - Google Patents

Description

118846

Method for making a parquet element and a parquet element

FIELD OF THE INVENTION The present invention relates to a method for making a parquet element, comprising at least two sides, the first side having a groove and the second side having a groove.

The invention further relates to a parquet element comprising one or more structural layers of at least predominantly wood material, a first side having a groove tongue and a second side having a groove tongue, the tongue being formed so that the parquet element can be joined to adjacent parquet elements.

Background of the Invention

Parquet elements or boards are either solid wood or then plywood, for example, so that the hardwood in the board parquet has a tread on the side of the cladding space and below it a softwood frame or the like and possibly other functional layers. The parquet element is usually rectangular and has a groove on the first long side and a groove on the opposite side. Often there are also 20 tongues on the short sides, at the ends: a tongue at the first end and a tongue at the opposite end. In order to prevent the building elements from moving relative to one another, the tongs must be locked together: .. by some means. Conventionally, in the installation phase of building boards, * .v 'is applied to one of the two tongues, which, when cured, attaches the elements to one another. Also known as non-adhesive tongue-and-groove joints or lock-point tongue-and-groove joints in which the tongues are shaped so that the tongues are joined to each other •. * ··. mechanically lock together and at least not necessarily glue.

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The tongue and groove of the laminated wood parquet element is most often fitted to a support layer underneath the wear surface, i.e. välisäiekerrokseen. This is typically made of glued coniferous slats or ribs having a fiber direction * ·; · * perpendicular to the fiber direction of the tread. At some * “*: the fiber direction of the support layer - or more generally the structural layer on which the tongue is at least substantially formed - is parallel to that side of the parquet element. For example, in the case of a rectangular parquet element! this is the case at the ends of the parquet element. When a tongue is prepared for such a side, the strength of that tongue is quite low. Namely, as is known, wood material splits or breaks in the direction of the fibers substantially 118846 2 more easily than in other directions. In particular, the tongue of the tongue breaks easily, either before the parquet element is delivered to the installation site, for example, when the tongue is machined, or when the parquet element is installed. This in itself creates unnecessary quality costs. Attempts have been made to solve the problem by replacing the conifer drill bit with a plywood strip at the ends of the parquet element, and sometimes also in the middle of the parquet element. However, the strength provided by the plywood cannot be utilized if the parquet element has to be cut off at the softwood core. However, in addition, plywood is a relatively expensive material, so this is not a good solution economically. Further, the plywood bar behaves differently than the ha-10 lever bar when exposed to environmental factors such as humidity or temperature. This may result in reflection of the plywood flooring in the parquet floor or differences in interest rates.

BRIEF DESCRIPTION OF THE INVENTION It is an object of the present invention to provide a novel and improved method of manufacturing a parquet element and a parquet element which limit the above problem.

The method according to the invention is characterized in that the method: making a tongue blank, fitting a reinforcing element to the tongue blank, machining the tongue to said tongue blank so that said reinforcing element forms part of said tongue.

Further, the parquet element according to the invention is characterized. the fact that the tongue is formed of one or more of said structural layers and that at least one reinforcing element of said tongue is arranged in the tongue.

An advantage of the invention is that a strong and durable tongue structure can be achieved at a low cost to a side of the parquet element: .v, in which the fibers of the tongue are substantially parallel to that side. The advantage of the above is that the material and structure of the support frame of the parquet element is substantially uniform along the tongues so that the parquet element is. stable even when environmental factors change. A further advantage is that, thanks to the reinforcing element, the size of the tongue can be reduced without affecting the strength of the tongue. A further advantage is that installing reinforcing elements on the parquet floor-35 piston is quite simple even at the parquet installation site, which is why 118846 3 parquet elements can be cut anywhere and reinforced elements can be installed on the cut surface.

Still another idea of a preferred embodiment of the invention is that the reinforcing element is a drill pin. The advantage is that the drill pin is a commonly used component with good availability and very low cost.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained in more detail in the accompanying drawings, in which Fig. 1 schematically shows a detail of a parquet element according to the invention in perspective view, Fig. 2a schematically shows a reinforcing element of a parquet -15, and Fig. 2c schematically shows a detail of a parquet element made of the blank of Fig. 2a.

In the figures, the invention is illustrated in simplified form. Like parts are denoted by like reference numerals in the figures.

DETAILED DESCRIPTION OF THE INVENTION Fig. 1 is a schematic perspective view of a par-· · VI m chain element according to the invention. This parquet element 1 has a structure of *. *!; * Three layers. The top is a wood tread 2, * »[; ***, which, when installed, comes into the room, ie away from the subfloor. Surface 2 of wear Z "· * 25 may be surface treated with lacquer, oil or the like. Further, the parquet element comprises an intermediate layer 3 and a base layer 4 below the tread 2, which form a board parquet support layer. The layers 2-4 are typically made of wood and bonded to each other. by gluing.

The tread 2 usually has one, two or three parallel rods arranged parallel to ··· 30 parquet elements 1. The interlayer layer 3 consists of wooden slats, usually glued, which are usually · · * ·; · * made of softwood. Also, the bottom end layer 4 is mostly made of:: ··: glued softwood slats or wood veneer. The main direction of the wood fibers, i.e. the fiber direction, of the interlayer 3>: ··· is in most cases substantially perpendicular to the wear layer 2 and the fiber direction. Such a cross-flamed 118846 4 witch's basic structure keeps its parquet board in shape even though there is always some living in the wood. In addition to the previous layers, there may be other functional layers in the board parquet, such as sound-absorbing layers.

The batt layer 3 may also be made of a board material made mainly of wood, such as MDF, HDF or OSB material, particle board or similar material known per se.

Of course, the structure of the parquet element 1 may be different: for example, it may have more than three structural layers. On the other hand, the parquet element 10 1 can have only one support layer in addition to the tread. The so-called solid wood parquet has only one layer, which is thus functionally both a wear surface and a support layer. Further, the principal direction of the wood in the tread 2 may be perpendicular to the surface of the parquet element, or the like.

The parquet element 1 is rectangular in shape, having two longer sides and two shorter sides, i.e. ends. Of course, the parquet element 1 can be equally long on each side.

The sides of the parquet element 1 are formed with tongues, which are used for joining side-by-side board parquet. The first side has 20 tongue 8a and the second side has a female tongue 9. Said tongue 8a and 9 are naturally dimensioned so that the tongue 8a of the parquet element fits into the tongue 9 of a similar parquet element to be fastened thereto and the tongue 9 of the tongue element tongue 8a.

. ···. The second end 11 of the parquet element 1 is provided with a second groove t, v, a tongue 8b and a second tongue corresponding to the second tongue 8b, respectively, at one end. It should be noted that neither end nor the other tongue ***** is shown in the figure. The tongues 8a, 8b, 9 of the parquet element 1 are formed mainly by the intermediate tongue 3, and thus, for example, the tongue 8b of the second tongue 8b is formed by the tongue 3. The tongues 8a, 8b, 9 can of course be formed of the parquet element 1.

• ·. ··. The tongues at the ends of the parquet board, such as the tongue and groove 8b, may have the same * or different profile as the tongues on the sides. The tongue and groove joint between the parquet elements 1: 35 can be either glued or glued, so-called locking joint.

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118846 5

In the parquet element shown in Fig. 1, the main fiber direction of the wood material of the interlayer 3 is coincident with the end of the parquet element 1. Reinforcing elements 10 are attached to the groove 8b of the end of the parquet element 1, hereinafter referred to as the "element". The elements 10 are substantially narrower than the width of the end 11. The elements 10 can be made of solid wood or plywood. The element 10 is disposed in the tongue 8b such that the principal fiber direction of the element 10 is substantially perpendicular to the fiber direction of the intermediate web 10, and thus parallel to the fiber direction of the surface bar, The elements 10 are secured to the interlayer simply by squeezing.

The elements 10 shown in Fig. 1 are of rectangular cross-section, but this is of course not necessary, but the elements may have a cross-sectional shape, circular or the like.

The elements 10 substantially increase the strength of the tongue 12 and the entire male tongue, since the fiber direction of the element 10 is perpendicular to the fiber direction of the tongue 20. The distances between the elements 10 as well as the dimensions of the elements are chosen to achieve the desired reinforcing effect.

: .. **: The elements 10 can also be adapted, if necessary, or exclusively; 10 long sides of the parquet element.

···: * · '· Elements 10 can also be fitted to the tongue. Element 10. ···. 25 is preferably positioned and dimensioned so that the groove of the groove runs: v. via element 10.

Fig. 2a schematically shows a reinforcing element of a ***** parquet element according to the invention from the end, Fig. 2b shows a schematic view of a blank of a parquet element fitted with * · 30 reinforcing elements according to Fig. 2a. and Figure 2c schematically shows a detail of a parquet element made of the blank of Figure 2b.

. ···. 2a, the element 10 is substantially circular in cross-section. Element 10 is in the form of a circular cylinder with the edges of each *: '*' '35 end bevelled. However, beveling the ends is not necessary.

The element 10 shown in Figures 2a to 2c is preferably a wooden drill pin, which is 118846 6 per se known as a drawing tool, for example in the furniture industry, where it is used as a support for a joint between two joining parts, and also glued as a fastening member. The drill pin is reasonably priced and comes in many different sizes. The surface of the drill pin generally comprises longitudinal grooves not shown in the figures for simplicity of presentation. The drill pin is made of wood so that the fiber direction of the wood is substantially parallel to the longitudinal direction of the drill pin.

Of course, the circular cylindrical element 10 can be not only a drill pin but also an element specifically made to carry out the present invention.

The parquet element 1 according to the invention can be manufactured, for example, as follows: the tread 2, the intermediate ply 3 and the bottom ply 4 are bonded to each other in a manner known per se, for example by gluing. In the same context or thereafter, a tongue blank 13 is manufactured. "Tongue blank" herein refers to the side or part of a parquet element 1 in which either a male or a female tongue will be manufactured. Pont preform 13 can be manufactured at the Parket Road Embossing Plant during the manufacture of the parquet element 1 or at a later stage - even at the installation site of the parquet floor. The billet blank 13 can thus be formed, if necessary, by cutting the parquet element 1 at any of its 20 positions.

Fastening means for the preform 13 of the pont are made of elements 10 var-1 · 1. The fastening means are now a recess 14, which is produced, for example, by drilling or milling on the intermediate layer 3. The elements 10 are then attached to the recesses 14, see Fig. 2b. The elements 10 are fastened to · · · ···. 25, for example, by gluing or mechanical means, for example, simply by means of an anchorage adapter. Next, a tongue is made at the said edge of the blank by working out the • material from the blank. In the embodiment shown, a groove is machined to the edge, in the manufacture of which the material removed from the preform 13 of the groove is shown with a broken line in Fig. 2c. The punch is machined by sawing * * 1 · 1 30 clubs, milling etc. in a manner known per se.

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The drawings and the description related thereto are intended only to illustrate the idea of the invention. The details of the invention may vary from patent to patent. · 1 ·. requirements. Thus, it should be noted that the shapes of the elements 10 as well as the profile of the tongues shown in the figures are exemplary only.

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Claims (22)

A method for producing parquet elements, said parquet element comprising at least two sides, in which the first side is a male pontoon (8a, 8b) and in which the second side is a female pontoon (9), characterized by the method: a spontaneous blank ( 13), there is provided a reinforcing element (10) in the blank (13), the width of the reinforcing element (10) being substantially smaller than the length of the side 10, the sponge (8a, 8b, 9) being processed so that said reinforcing element (10) ) forms part of said spontaneous (8a, 8b, 9). Method according to claim 1, characterized in that the reinforcing element (10) is attached to the spontaneous blank (13) by gluing. 15 Method according to claim 1, characterized in that the reinforcing element (10) is mechanically attached to the blank (13). Method according to any of the preceding claims, characterized in that the parquet element (1) is a multilayer parquet board. Process according to any of claims 1-3, characterized in that the parquet element is a single-layer solid board of solid wood. 6. A method according to any of the preceding claims, characterized in that the reinforcing element (10) is veneered. ··· · Process according to any of claims 1-5, characterized in. because the reinforcing element (10) is plastic or plastic composite. • * i 25 8. A method according to any of the preceding claims, characterized in that the reinforcing element (10) is essentially in the form of a circular cylinder. Method according to claim 8, characterized in that the for the reinforcing element (10) is a drill pin. • e \ v 30 Method according to any of the preceding claims, characterized in that the reinforcing element (10) is made of wood and arranged in the blank so that the main fiber of the reinforcing element (10) is substantially perpendicular to the the edge of the parquet element. Method according to any of the preceding claims, characterized in that a male pontoon (8a, 8b) is produced from the spontaneous blank (13). Method according to any one of claims 1-10, characterized in that a female pontoon (9) is produced from the spontaneous blank (13). 118846 Parquet elements comprising one or several structural layers (2, 3, 4) which are mainly of wood material, a first side in which a male pontoon (8a, 8b) is arranged, and a second side in which a female pontoon (9 ), which are formed so that the parquet element (1) can be joined to adjacent parquet elements (1), which are formed spontaneously (8a, 8b, 9) by one or more of said structural layers (2, 3, 4). ) and that at least one element (10) reinforcing said spontaneously is arranged in said sponge (8a, 8b, 9), characterized in that the width of said reinforcing element (10) is substantially smaller than the length of said side. Parquet element according to claim 13, characterized in that the parquet element (1) has the shape of a rectangle such that it has two shorter sides and two longer sides. Parquet element according to claim 14, characterized in that the reinforcing element (10) is arranged on the short side of the parquet element (1). Parquet element according to claim 14 or 15, characterized in that the reinforcing element (10) is arranged on the long side of the parquet element (1). Parquet element according to any of claims 13-16, characterized in that it is a multi-layer parquet board. Parquet element according to any of claims 13-16, characterized in that it is a solid wood board. m Parquet element according to any one of claims 13-18, characterized in that the reinforcing element (10) is arranged in the male pontoon (8a,: ***: 25 8b). * ·· f1 · 1: 20. Parquet elements according to any of claims 13-19, characterized by. 1 · ·. This means that the reinforcing element (10) is arranged in the female sponge (9). Parquet element according to any one of claims 13-20, characterized in that the reinforcing element 30 (8a, 8b, 9) reinforced by the reinforcing element (10) is a slab to be glued. • · '"· 1 Parquet element according to any of claims 13-21, characterized in that the sponge (8a, 8b, 9) reinforced with the reinforcing element (10) is a reading pontoon. ·· ♦