FI129411B - Antimicrobial wood material based piece of furniture with laminated plastic coating - Google Patents

Abstract

The invention relates to an antimicrobial wood-based furniture (1, 2, 3, 5), which has a plastic laminate coating, which comprises a plastic laminate coating installed on the surface of the furniture, advantageously its contact surface, which laminate coating has a thickness of 0.4-1.4 mm and which laminate coating comprises one or more superimposed films (641 ... 646), each film of which is made of impregnated paper, especially melamine resin or polyester resin. In the invention, antimicrobial effect against at least S.aureus and E.coli has been provided in the plastic laminate coating of the furniture, the antimicrobial effect of the plastic laminate coating tested according to standards ISO 22196 or JIS Z 2801 eliminating at least 95% of the bacteria used in the test. impregnating one or more films in the plastic laminate coating with at least one batch of resin, in which an additive containing silver has been added in such an amount that each film containing silver in the laminate coating has silver in an amount of 0.005-0.0 v%, calculated from the total weight of the resin contained in each film containing silver.

Description

The invention relates to an antimicrobial wood-based furniture according to claim 1, comprising a plastic laminate coating mounted on the surface of the furniture, preferably a contact surface having a thickness of one to 0.4 mm and each having a lamella thickness of 0.4 to 1.4 mm. (641 to 645), each film of which is formed of paper impregnated with a resin, in particular a melamine resin or a polyester resin. The invention also relates to a method according to claim 18 for coating furniture with an antimicrobial plastic laminate coating. and some similar low pressure laminates have been disclosed in the patent literature. However, the known laminates have been used primarily for larger surfaces and levels, in which case the antimicrobial treatments required for such surface surfaces have been based on the verification of a certain antimicrobial treatment efficiency and not on the cost-effectiveness of individual furniture. In furniture, laminate surfaces may be a relatively small part of the furniture, but the cost of the silver treatment they require can be high. The latter N problem is particularly great due to the current tightening of cost and hygiene requirements. furniture used in public spaces such as schools and in the reception areas of health centers.

O

N I The present invention is intended to eliminate or at least alleviate the problems encountered in the prior art.

Thus, the main object of the invention is to provide a cost-effective way to treat smaller laminate surfaces used in furniture.

N silver compounds antimicrobial and thus treated furniture.

In addition, it is an object of the invention to provide a method of treating furniture in such a way that it always has at least a certain effect of reducing the growth and multiplication of bacteria in the state in which they are installed compared to the corresponding untreated furniture.

The antimicrobial furniture of the present invention having a plastic laminate coating achieves the above objectives. Accordingly, the invention relates to an antimicrobial wood-based furniture according to claim 1, which is coated with a plastic laminate coating. The furniture is preferably a table, chair or reception desk.

More specifically, the invention relates to an antimicrobial wood-based furniture (1, 2, 3, 5) having a plastic laminate coating comprising a plastic laminate coating mounted on the surface of a piece of furniture, preferably a contact surface, having a thickness of 0.4 to 1.4 mm and a laminate coating comprises one or more overlapping films ($ 641 to $ 64), each film being formed of paper impregnated with resin, in particular - melamine resin or polyester resin. In this case, the plastic laminate coating of the furniture is provided with antimicrobial activity against at least S. aureus and E. coli, whereby at least 95% of the bacteria used in the test one or more films of the plastic laminate coating in at least one batch of resin to which a silver-containing additive has been added in such an amount that each silver-containing film of the laminate coating contains 0.005 to 0.1% by weight of silver based on the total weight of the resin contained in each silver-containing film

N = 25 - and

The antimicrobial effect of the O-plastic laminate coating is obtained by impregnating a plurality of resin batches on a paper comprising the uppermost film of the plastic laminate coating, especially on decorative paper. 0.1% by weight, based on the total weight of the resin batches contained in said uppermost film, a gradient containing antibacterial silver (Ag) is formed in the uppermost film of the plastic laminate coating, the amount of silver increasing as the a batch of resin, such as a batch of polyester or melamine resin, so that only the most recent resin batch has been added with a silver-containing additive in such a way that the upper film of the laminate coating contains silver, 0.005 to 0.1% by weight, calculated the total weight of the resin batches used to make said film. The closest prior art to the invention is disclosed in WO

The invention as defined in claim 1, 18 or 23 differs from the foregoing closest prior art in that a gradient containing antibacterial silver (Ag) is formed in the top film of the plastic laminate coating, where the amount of silver increases as it moves from the interior of the paper to its surface layer. A preferred embodiment of the invention comprises a table with a plastic laminate coating, the wooden table top of which is provided with a plastic laminate coating and one or more wooden table legs or metal legs are connected below the wooden table top. The plastic laminate coating of the wooden table top is 0.4 to 1.4 mm thick and the plastic laminate coating comprises overlapping film layers, each film comprising a resin impregnated paper layer, wherein the plastic laminate coating is in at least one film layer, one of which is a plastic laminate main coating. a total of 0.005 to 0.1%, based on the weight of the resin batches used to make each silver-treated film layer of the plastic laminate coating. In this case, the silver-treated film layer contains a total of 0,0015 to N 25 0,4% of silver (Ag), calculated on the weight of the silver-containing resin batches.

O 2 Another preferred embodiment of the invention relates to a receiving counter having a plate-like operating surface made mainly of wood, comprising an upturned lid of the working surface and a lower operating surface below which the base is made of wood and which is directed directly downwards from the working surface of the counter. The cover-side surface of the use level is provided with a plastic laminate coating, and below said use level is associated a base made of a wood material, which comprises a wood surface covered with a plastic laminate or a plastic film,

The plastic laminate coating of the application level and the plastic laminate coating or plastic film of the stand are provided with antimicrobial activity at least against S. aureus and E. coli.

The plastic laminate coating comprises overlapping film layers, each film comprising a resin-impregnated paper layer.

In this case, at least one film layer of the plastic laminate coating, one of which is the uppermost film layer of the plastic laminate coating, contains 0.005 to 0.1% silver (Ag), based on the total weight of the resin used to make each silver-treated film layer of the plastic laminate coating. - The plastic film of the stand is a self-adhesive melamine film with a thickness of 0.2 to 1 mm.

The plastic film consists of overlapping film layers, and the plastic film contains 0.005 to 0.1% by weight of silver (Ag) based on the total weight of the resin used to make each silver-treated film layer.

Another preferred embodiment of the invention relates to a coating above the seat level of a wooden frame chair or to a backrest coating which is a plastic laminate coating.

The plastic laminate coating has a thickness of 0.4 to 1.4 mm, and said plastic laminate coating comprises overlapping film layers, each film comprising a resin-impregnated paper layer, wherein the plastic laminate coating has at least one film layer (one) of which is the main a total of 0.005 to 0.1%, based on the total weight of the resin used to make each layer of silver-treated film in the plastic laminate coating.

Preferably, the majority of said antibacterial silver (Ag) is impregnated into the uppermost decorative paper of the plastic = laminate coating.

N 25 - In another preferred embodiment of the invention, a gradient of antibacterial silver (Ag) is provided on the uppermost paper of the plastic laminate coating, such as decorative paper, where the amount of silver increases as it moves from the interior of the decorative paper to its surface layer. = In the latter embodiment of the invention, the decorative paper is impregnated twice with a resin such as melamine resin and only a silver-containing additive is added to the last batch of resin.

This last batch of resin contains so much silver that about 0.005 to 0.1% by weight of silver is obtained in the decorative paper, based on the total weight of the resin used to impregnate the decorative paper of the plastic laminate coating.

Thus, a silver gradient is obtained in the decorative paper in which only the thin surface layer of the decorative paper contains silver, the inner part of the decorative paper being impregnated with an additive-free resin such as melamine resin.

Preferably, the plastic laminate is a low pressure laminate in which the paper layers are first impregnated with resin and then the overlapping paper layers are pressed together at a compression pressure of less than 2.0 MPa.

The invention preferably uses a continuous roll lamination process, and in thin laminates the compression pressure is at most 2.0 MPa and in thicker laminates the compression pressure is preferably 2-4 MPa.

In a preferred embodiment of the invention, the at least one vertical edge of the operating table of the wooden table top or the counter is further provided with an elongate polymeric edge which is either an edge strip or an edge molding.

The polymer edge is provided with antimicrobial activity against at least S. aureus and E. coli and is 0.5-5 mm thick, in which case a silver-containing additive has been added to the resin used in the preparation of the polymer edge so that there is silver in the polymer edge (Ag ) 0.005 to 0.1% by weight, based on the total weight of the resin treated with the silver-containing additive used to make said polymeric edge.

The edge band is an elongated polymer edge made of a polyester-based or acrylic butadiene-styrene-based resin having a thickness of 0.5 to 4 mm, preferably 1 to 2 mm, and the edge band to be silver (Ag) 0.005 to 0.1% by weight based on the total weight of the resin used to make the polymer edge.

The polymer molding is an elongated polymer edge made of a polyurethane-based resin (polyol + isocyanate) with a thickness of 1 to 5 mm and a silver (Ag) content of 0.005 to 0.1% by weight, based on the total weight of the resin used to make the polymer edge.

N 25 - The term antimicrobial coating means a plastic, paint, laminate, or composite coating that has been tested in accordance with ISO 22196 or JIS 2 2801 and that eliminates at least 95% of the bacteria used in the test that come into contact with such a coating. . = Resin (e.g. polyester resin, abs resin, polyurethane resin) in the present invention means a resin for laminating paper layers comprising> polymer components (e.g. monomers, pre-accelerated polymer, etc.), an optional accelerator and a catalyst.

The present invention is based, firstly, on the fact that the plastic laminate coating of a furniture such as a table, chair or counter (such as a reception desk) is provided with antimicrobial power so that the plastic laminate coating meets the requirements of the above-mentioned ISO 22196 or JIS 2 2801 antimicrobial test. The plastic laminate is then - preferably a low pressure laminate in which the paper layers are first impregnated with resin and then the overlapping paper layers are pressed together at a compression pressure of less than 4.0 MPa. It is often more cost-effective to use low-pressure laminates in furniture than high-pressure laminates because the life cycle of the furniture is often relatively short.

- The amount of silver in the plastic laminate coating is kept low by adding only a very small amount of silver compounds (only about 0.005-0.1% by weight) to its surface layers, preferably decorative paper, based on the weight of the resin batches used to impregnate each silver-containing paper layer of the plastic laminate. Third, despite the very low amount of silver compounds, the antimicrobial efficacy of the added - silver compounds has been confirmed, preferably using silver compounds bound to the support. These measures have the advantage that only the amount of silver compounds added to the contact surfaces of the furniture is sufficient to ensure sufficient antimicrobial efficacy of the furniture, for example in public administration furniture (eg schools, health centers, etc.), but the cost of silver treatment remains low.

Preferably, silver compounds are added to the selected contact surfaces of the furniture in such an amount and in such a form that the antimicrobial activity of the silver compounds on the contact surfaces against certain pathogenic bacteria satisfies the antimicrobial activity against selected pathogens defined in ISO 22196 or JIS Z 2801. Selected pathogens include at least S. aureus and E. coli. Em. according to the test protocol, the antimicrobial potency of the active substance must be such that it kills = 95% of the selected pathogens from a given antimicrobially treated surface compared to the untreated surface.

I = The contact surfaces with silver are the table top with a plastic laminate coating on the table top and the top surface with the plastic laminate coating on the operating level at the reception desk. In addition, vertical edges with a polymer coating that are confined to the table top of the table and the counter top of the counter can be treated. The chairs, in turn, may have a contact surface to be treated and a backrest provided with an antibacterial plastic laminate coating.

In the invention, the selected contact surface of the counter, table or chair is thus coated with a plastic laminate. Such a contact surface coated with a plastic laminate is above the table top, above the counter top, the seat level of the chair, the back of the chair or the armrests of the chair. The invention also relates to a plastic laminate coating for use on a contact surface of furniture. The plastic laminate coating comprises overlapping film layers, each comprising at least one resin-impregnated paper layer. The plastic laminate coating consists of a plurality of overlapping film layers, each film layer comprising a film formed of a resin-impregnated paper layer (s).

- An antimicrobic effect has been formed on the plastic laminate coating by preferably adding 0.005 to 0.1% by weight of silver to the resin impregnated only on the top decorative paper of the plastic laminate, as a silver compound bound to the support. The resin is preferably a melamine resin or a polyester resin. The amount of silver is calculated from the total weight of the resin batches added to the decorative paper.

- Here, each film layer is understood to consist of a film using the same polymeric resin for impregnating the same type of paper. Thus, several identical layers of paper may be superimposed on the same film if they are impregnated with the same resin material.

The silver compound bound to the support is preferably a silver phosphate glass having a silver content of 0.1 to 10 mol%, preferably 0.5 to 5 mol%, more preferably 0.5 to 2 mol%. A preferred embodiment of the invention comprises a plastic laminate coating which has a thickness of 0.4 to 1.4 mm and is intended for coating furniture. The plastic laminate coating comprises overlapping film layers, each film comprising a & resin impregnated paper layer, wherein the plastic laminate coating in at least one film layer, one of which is the top film layer of the plastic laminate coating 0.00%, is silver (Ag). , calculated on the total weight of the resin incorporated in each silver-containing film of the plastic laminate coating.

In another preferred embodiment of the invention, a gradient containing antibacterial silver (Ag) is provided on the uppermost paper of the plastic laminate coating> 30, such as decorative paper, where the amount of silver increases as it moves from the interior of the decorative paper to its surface layer.

In the latter embodiment of the invention, the decorative paper is impregnated twice with a resin such as melamine resin, and only a silver-containing additive is added to the last batch of resin. This last resin batch thus contains about 0.015-0.4% by weight of silver, based on the weight of said last resin batch, such as the melamine resin batch. In this way, a silver gradient is obtained in the decorative paper, in which only the thin surface layer of the decorative paper contains silver, the inner part of the decorative paper being impregnated with an additive-free resin such as melamine resin. In this case, the silver-treated film layer contains a total of 0.005 to 0.1% of silver (Ag), based on the resin incorporated in the silver-containing film, i.e. the total weight of all resin batches. In another preferred embodiment of the invention, the polymer edge of the table or counter is further formed antimicrobial by adding an amount of silver compound bound to the support to the polyurethane resin during the casting step of the polymer polymer casting. The polymer edge made of polyurethane casting has a thickness of 1 to 5 mm and contains 0.005 to 0.1% by weight of silver, based on the weight of the polyurethane resin used to cast said polymer edge. In yet another preferred embodiment of the invention, the polymeric edge of the table or counter is an edge strip formed antimicrobic by adding a silver compound to the polyester resin or abs resin forming the edge strip to the extent that the edge strip having a thickness of 0.00-4 mm contains silver. 0.1% by weight based on the weight of the polyester resin or abs resin used to make the edge tape. In the following, the invention is further illustrated by reference to the accompanying figures.

OF

O <25 - Figures 1A and 1B each show a perspective view of a multi-legged table and T two different groups of customer chairs on opposite sides of a table top of this table.

I a = Figure 2A shows a perspective view of an electric table with adjustable legs and a group of customer chairs and an office chair around it.

LO o S 30 Figure 2B further illustrates a separate oblique view of Figure 2A.

N able electric table.

Figure 2C, in turn, shows an upturned view of the office chair shown in Figure 2A.

Figure 3 shows an elevated view of a group of furniture comprising a table with a footrest and four customer chairs around it.

Figure 4A shows a pair of customer chairs that can be used in the furniture groups shown in Figure 1A, 1B or 2A to replace the customer chair groups shown therein.

Figures 4B and 4C show various customer chairs that can be used in the customer chair groups shown in Figures 1A, 1B, and 2A.

Figures 5A and 5B each show office spaces in which several groups of furniture according to the invention are arranged.

Figure 6 shows the reception desk and the office chairs used in connection with it.

Figures 7A-7G schematically show various contact surfaces equipped with antimicrobial treatments.

The structures shown in Figures 1-7 and what aspect of the invention each figure is intended to illustrate will now be described.

Figure 1A is a perspective view of an antimicrobial furniture assembly according to the invention arranged in one and the same office space.

Figure 1A shows a table 3 and four customer chairs 1 around it; 1-14, the set of customer chairs 11-14 being adapted for use with said table 3.

There are two customer chair groups on the opposite side of the table.

The first group of customer chairs consists of customer chairs 1; 1! and, 1; 12 and the second group of N customer chairs consist of customer chairs 1; 13 and 1; 14, which groups of customer chairs are located on opposite sides of the table top 31 of the table 3. 2 The table 3 comprises a table top 31 made of a wood material, such as solid wood or furniture board.

The total thickness of each plastic laminate coating 310c is about 0.8 mm.

Only an antimicrobial silver compound has been added to the plastic laminate coating 310c above the table top 31 in a manner similar to that shown in Fig. 7C and its description to form an antimicrobial plastic laminate coating 310c, 64.

In this case, the top surface film 64 ”, 64a was completely omitted from the plastic laminate and was replaced by impregnating the top decorative paper 642, 64b (cf. Fig. 7C) once or twice with melamine resin. The silver-containing silver phosphate glass contained 0.1 to 10 mol% of silver. The general formula of the silver phosphate glass used was CaaoNazo <PsoAgx, where x = 0.1-10, preferably x = 0.5-5. The silver phosphate glass was preferably included only in the latter batch of resin used to impregnate the decorative paper. In this way, a thin surface film containing a silver compound was formed on the decorative paper. Thus, the thin surface layer of the uppermost decorative paper 64b (cf. Fig. 7C) of the plastic laminate coating 310c of the table top 31 contained silver after treatment of about 0.005 to 0.1% by weight based on the weight of the silver-treated resin batch added to the surface layer of the decorative paper. The last batch of resin used for the impregnation of the decorative paper then contained approximately 0.015-0.4 wt% silver (Ag) and the decorative paper itself contained approximately 0.005-0.1 wt% silver (Ag) based on all the resin batches used for the impregnation of the decorative paper. - Between the plastic laminate coatings on the top and bottom of the table top 31 of the table 3 there is an area of the end (edge) of the wooden table top 31 of the table 3, through which the vertical plane is transverse to the plane 31a above the table top 31. An elongate polymeric edge 33d is formed in the vertical edge 33 of the end of the table top 31 shown in Fig. 1A, which is formed as an antimicrobial polymer edge 33d, 63. The polymeric edge 33d of the edge 33 may be either or an edge resin strip 33e made of abs resin (cf. Fig. 7G). An antimicrobial silver compound, such as the above-mentioned silver phosphate glass having the general formula CasoNa20-xPsoAgx, where x = 0.1-10, especially 0.5-5, is added to the polyurethane resin (edge casting) or polyester resin (edge & tape) forming the polymer edge N 25 33d. in the manufacturing step of said polymer edge 33d in a manner similar to that illustrated in connection with the description of Fig. 7G.

O - A continuous back support 11 rises from the seat level 10 of each chair 1, which is at the same time a backrest 113. The upward-facing back support 11 has a wooden frame and is covered with N 30 plastic laminate 11c on both sides. The plastic laminate coating 11c of the backrest / backrest has been treated as an antimicrobial plastic laminate coating 11c, 64 D with a silver compound such as silver phosphate glass. The preparation of the plastic laminate coating 11c and its treatment as antimicrobial is described in more detail below in connection with Fig. 7C. The chairs 1 shown in Figure 1A; 11, 1; 17, 1; 19, 1; The films 64 to 64 $ 64 of the plastic laminate coatings 11 (cf. Fig. 7C) are all based on polyester resin. Alternatively, films for the plastic laminate coating of the backrest / backrest 11, 113

641 ... 645 can be formed by impregnating the paper laminate papers of the backrest / backrest 11, 113 with melamine resin. In these antimicrobial plastic laminate coatings, either the top decorative paper 642, 64b, the top decorative paper 642, 64b and the top surface film 64 !, 64a or all films 64 ... 64 were impregnated with polyester resin (or melamine resin) at least once. Figure 7C). Silver compounds (as silver phosphate glass or zeolite-bound silver) bound to the support were added to the polyester resin to provide antimicrobial treatment. The amount of antimicrobial silver in all treatments was 0.005 to 0.1% by weight, based on the total weight of the resin batches of all paper layers treated with the silver-containing additive. In general, however, silver was included only in the resin batch / batches that were impregnated into the top decorative paper. Chairs 1; 1! and, 1; 1? the contact surfaces further comprise the surfaces of the armrests 14 of the legs 13 and / or the backrest 11 of these chairs. The horizontal armrest portions 14c of the armrests 14 are made of molded thermosetting plastic. Among the resin used for the molding, a microbicide-supported silver compound, especially silver phosphate glass, has been added in the manufacturing step to such an extent that the molding of the arm parts 14c contains 0.005 to 0.1% by weight of silver (Ag) based on the weight of the resin used in the molding. Fig. 1B also shows a perspective view of another <25 - antimicrobial furniture assembly according to the invention, which is arranged in one and the same office space. Figure 1B also shows a table 3 and four customer chairs N 1 around it; 11-1; 1 *, which is a set of customer chairs 1; 11-1; 1 * is adapted for use with said table E. The set of customer chairs has two groups of customer chairs on the opposite side N of the table, located on opposite sides of the table plate 31 of the table 3. 3> The table 3 also includes a rectangular table top 31 made of a wood material, such as solid wood or furniture board.

By furniture board in this application is meant the body material of a table top or countertop, which may be particle board, plywood or fibreboard, in particular mdf board.

The upper side 31a and also the lower side of the table top 31 are provided with a wood veneer coating 3106 having a thickness of 0.5-4 mm, preferably 0.6-1.5 mm.

The wood veneer coating 310b above the table top 31a is provided with an antimicrobial paint or varnish coating 61 having a total film thickness of 40 to 120 μm depending on the amount of binder in the paint or varnish coating and the number of paint / varnish layers. -40 μm). - 0.005-0.1% by weight of silver bound to the carrier has been added to the paint or varnish coating, based on the dry weight of the paint / varnish layers of the paint or varnish coating.

Generally, only an antimicrobial silver compound is added to the paint or varnish layers of the wood veneer coating 310b above the table top 31 in a manner similar to that illustrated in Figs. 7D-7E.

However, there are applications in which the wood veneer coating below the table top is also provided with an antimicrobial paint or varnish coating 61. Between the top and bottom wood veneer coatings of the table 3 there is a vertical edge 33 of the table top 31 perpendicular to the plane 31a above the table top 31.

An elongate antimicrobial polymer edge 33d, 63 parallel to the top edge 31b of the table top 31 may be formed at the end 33 of the table top 31 as previously described in connection with Fig. 1A.

Instead of the polymer edge 33d, the vertical edge 33 of the table top 31 can also be provided with a separate wooden strip to provide an edge strip (not shown in the figures). The edge strip can then be provided with an antimicrobial wood paint coating such as a lacquer coating.

The treatment of the wood paint coating as an antimicrobicide can be carried out in a manner similar to that described in connection with Figures 7D-7E and their description.

A Below the rectangular wooden table top 31 of the table 3 shown in Fig. 1B, four wooden table legs (edge = foot) 34 are connected at the corners of the table top 31; Chapter 34b.

Each edge foot 34b has an antimicrobial wood paint N-30 coating 61b.

The treatment of the wood paint coating to antimicrobicide can be performed in a manner similar to that described in connection with Figures 7D-7E and their description.

An antimicrobial wood paint coating 61b is formed on the table leg 3; 34b N thus spraying or otherwise applying to each table leg 34; 34b paint or one or more uniform coats of paint with a wet thickness of about 100.

ros (dry thickness about 20-40 μm). Selected paint layers contain a silver-containing antimicrobial carrier-bound compound such as zeolite or silver phosphate glass. The silver phosphate glass or zeolite is alloyed with the wood paint to such an extent that each selected paint layer, especially the top paint layer, contains 0.005 to 0.1% by weight of dry silver of the dry weight of said dry paint film. In practice, the top layer of paint used for the surface treatment of the product should thus contain silver, preferably 0.005 to 0.1% by weight, based on the dry weight of the binder contained in the paint. Chairs 1; 13 and 1; 1 * the plastic laminate coating 64 on the backrests is made and produced as antimicrobic in a manner similar to that shown in Figure 1A for chairs 1; 17, 1; —1%, 1; 13, 1; 14 for plastic laminate coatings. Here again, the films 64-64% of the plastic laminate coating 64 may all be based on either a polyester resin or a melamine resin as described in Figure 7C and its description below. Both all the edges 105 of the seat level 10 and all the edges 115 of the backrest 11 have been treated with the antimicrobial furniture lacquer 62 in the same manner as in the embodiment shown in Fig. 1A. These edges are considered as contact surfaces in the customer chairs 1. Figure 2A shows a perspective view of a two-legged so-called electric table 3, and Figure 2A shows two customer chairs 1 around an electric table 3 and one office chair.

2. The electric table 3 of Fig. 2A is further shown separately in Fig. 2B, and the office chair 2 of Fig. 2A is shown separately in Fig. 20. The details of the invention shown in these Figs. 2A, 2B and 2C will be described below. The end plate 31 of the electric table 3 is a furniture plate coated on the top and bottom with a plastic laminate coating 310c (the underside can also be coated only with counter paper). In the manufacturing step of the plastic laminate coating 31; 310c has been made antimicrobial. The plastic laminate-A coating 320c (or counter paper) on the underside 31b of the electric table 3 is not considered to be a contact surface, so it is omitted - usually not treated with antimicrobial silver compounds or the like. However, there are = applications where the underside of the tabletop can also be treated as antimicrobial.

N N 30 - The preparation of the plastic laminate coating 310c above the table top 31 of the electric table 3 and the formation of said laminate coating as antimicrobic was performed in a manner similar to that described in connection with the description of Figs. 1A and 7C. A polymeric edge 33d was added to all the vertical edges 33 of the table top 31 of the electric table 3, to which microbicidal silver compounds were added in such an amount that the polymeric edge

33d was found to meet the antimicrobial activity against selected pathogenic bacteria as defined in ISO 22196 or JIS 2 2801. The antimicrobial polymer edge 33d, 63 containing silver compounds was prepared in a manner similar to that described in connection with the table shown in Figures 1A. The preparation of the polymer edge 38d itself and the addition of silver compounds to the polymer edge are described in more detail in Figure 7G and its description. Referring to Figs.

- Below the electric table 3 there are two metal, height-adjustable table legs 35; 35c treated by powder coating. The legs 35c provided with the adjustment mechanism of the electric table 3 are generally not considered to be contact surfaces, in which case no microbicidal compounds have been added to the powder paint coating therein.

Figures 4A and 4B and 4C show various chairs 1, in particular customer chairs - which can be used in the groups of furniture shown in Figures 1A, 1B and 2A instead of the customer chairs shown therein. They use a variety of antimicrobial coatings that are capable of eliminating at least 95% of the selected pathogenic bacteria in the aforementioned ISO 22196 or JIS Z 2801 tests.

Thus, Figure 4A shows a pair of chairs 1; 1 'and 1; 1 ”, which can be used, for example, in the furniture assembly shown in Fig. 2A, instead of the customer chairs shown therein.

The set of chairs 9 shown in Figure 4A; 92 chairs 1; 11, 1; 1? are both metal-framed customer chairs. 1 of these customer chairs; 11, 1; The outwardly visible surfaces are - again potential coatings provided with antimicrobial silver coatings. Each customer chair 1; 1! and, 1; 1? comprises a wooden frame seat 10, the upper and side edges of which are provided with either an antimicrobial plastic laminate coating 10c; 64. A seat level 10 antimicrobial laminate coating 10c; - 64 (melamine laminate or polyester laminate) and the amount of silver contained = was similar to that described in Figure 7C. In the case of an additive-treated film, the upper mass of the laminate coating is then 0.005 to 0.1% by weight of silver, based on the weight of the resin used to make the top film layer. N The underside of the seat level 10 is generally painted and the paint surface has not been treated with an antimicrobial silver compound, as the underside of the seat level 10 is generally not considered to be a contact surface that should be treated with silver compounds.

Both customer chairs 1; 11, 1; 1? the seat level 10 rises upwards from a back support 11 having a metal support frame 112 in which an upwardly extending wooden backrest 113 is placed in the support frame 112. coated with an antimicrobial powder coating 61; 61a. The amount of microbicidal silver was 0.005 to 0.1% by weight based on the dry weight of the powder coating layer 61a. A plate-shaped wooden backrest 113 placed in the metal support frame 112 of the backrest 11, which can be made of mold, plywood or solid wood.

First customer chair 1; 1! each side of the backrest 113 is coated with a plastic laminate coating 11c having an antimicrobial treatment. Each side of the backrest 113 is coated with a plastic laminate coating 11c based on melamine resin. The total thickness of the plastic laminate coating on each side of the backrest 113 is about 0.4 to 0.8 mm, and an antimicrobial silver compound has been added to the plastic laminate coating on each side in a manner similar to that illustrated in Figure 7C. The production of the plastic laminate coating 11c, 64 (melamine laminate) and the amount of silver contained therein was similar to that described in Fig. 7C: in this case too the plastic laminate top film 64 ", 64a was completely omitted and .

The silver-containing silver phosphate glass in which the silver phosphate glass has the general formula CasoNa 2 O-xPsoAgx and x is 0.1 to 10, preferably 0.5 to 5, was included only in the resin used for impregnating the latter decorative paper. Thus, a thin resin-containing surface film with a silver N 25 compound was formed directly on the decorative paper. After the treatment, the thin surface film of the uppermost decorative paper 64b again contained about 0.005 to 0.1% of silver, based on the amount of resin embedded in the uppermost surface film.

O - 1 for both chairs; 11, 1; 12 all 4 feet are metal legs 13 (so-called tubular legs) = coated with powder coating 13d3. The powder paint coating 13d3 of each chair leg is formed as an antimicrobic powder coating 61; 61a, as described in more detail below in connection with the description of Fig. 7F. Powder coating 61; 61a is formed by spraying or otherwise applying to each chair leg 13 a uniform layer of powder paint of about 100 μm, which, when dried, forms a powder paint coating 61a of about 50 to 60 μm.

(powder paint film) containing a silver-containing antimicrobial carrier-bound compound such as zeolite-bound silver or silver phosphate glass.

Silver phosphate glass or silver-containing zeolite is doped in the powder paint to such an extent that the dry paint film 61a contains 0.005% to 0.1% by weight of silver on the dry weight of the powder paint.

Figure 3, in turn, illustrates a group of furniture in the same space, such as an office room, whose furniture is adapted to be used simultaneously.

This group of furniture includes a table 3 with a metal-coated round table top 30. The table top rests on a metal post leg 35; 35a and the base thereon to the floor.

Post leg 35; 35a can also be made of solid wood, and as such is coated with furniture paint or varnish in a conventional manner.

The paint coating of the post leg 35 is generally not provided with antimicrobial power because the post leg is not normally in contact with the user who - rests on the table top.

In the embodiment of the invention shown in Fig. 3, there is a metal-coated table top 30 above and below the table top 3. The vertical edge 30b of the table top 30 is provided with a polymer edge 30d, which here is a polyester-based edge band 30e.

The polymeric edge 30b of the metal-coated table top 30 is formed antimicrobially by adding silver bound to the carrier to the polyester resin forming the edge tape 30e to the extent that the edge tape having a thickness of 0.5 to 4 mm contains silver 0.005 to 0.1% by weight based on the weight of the polyester resin or abs resin used to make the edge tape. - 1 for all customer chairs shown in Figure 3; 17-1; 14 seat level 10 and the backrest O 25 support / backrest 11,113 are made of wood.

All visible surfaces of the seat level 10 and the backrest / backrest + 11,113 have been treated for antimicrobial activity, ie they A eliminate at least 95% of the bacteria used in the test in ISO 22196 or JIS 2 2801.

Chairs 1; 12.1; 13, and 1; The backrest 11 17 consists of a continuous wooden = framed backrest 113. Both the seat levels 10 and the backrests 11 are coated on the front and back with a plastic laminate 11 based on polyester resin or melamine resin; 11c, and silver phosphate glass having the general formula CasoNa 2 O-xPsOAgx wherein X = 0.1 to 10, preferably 0.5 to N 5 is added to this plastic laminate during manufacture, as described in more detail in Fig. 7C.

The plastic laminate coating thus obtained has a thickness of 0.4 to 1.4 mm and contains only silver on the uppermost decorative paper.

The decorative paper contains 0.005 to 0.1% by weight of silver, based on the total weight of the polyester resin batches or melamine resin batches on which the decorative paper is impregnated.

1 for each customer chair; 11-1; The vertical edge (edge) 105 of the 14 seat levels and the vertical edge (edge) 115 of the backrest 11c are further provided with a paint coating 105d, 115d having 1-3 layers of paint and silver bound to the carrier, for example in the form of silver phosphate glass, is added to the uppermost paint layer.

The general formula for silver phosphate glass is CasoNa20-x <P50Agx, where X = 0.1 to 10, preferably 0.5 to 5, whereby 0.005 to 0.1% by weight of silver is obtained in the uppermost paint film, based on the dry weight of the paint coating 105d, 115d, such as the lacquer coating. .

The thickness of the top paint layer when dry is 0.20-0.40 μm if the dry weight of the paint or varnish is 20-40% by weight, respectively. Figure 7C shows a typical antimicrobial plastic laminate 64, which in the figure is a melamine laminate 641, which may be e.g. the laminate coating 310c of the wooden table top 31, the laminate coating of the counter 5 made of wood material the laminate coating 11c of the backrest 11 made of wood material of the chair 1 or the laminate coating 10c of the seat 10 made of wood material of the chair 1.

The plastic laminate 64 shown in the figure has six films 64! ... $ 64 which are pressed together by heat.

There may be fewer transparencies.

These films 641 to 645 are indicated in the figure by reference numerals 64a, 64b, 64c, 64c, 64b.

Of these, reference numeral 64a denotes a surface film which is, for example, a cellulosic paper impregnated with a melamine resin of 60 to 80 g / m 2.

Reference numeral 64b denotes a decorative paper impregnated with a melamine resin of 120 to 150 g / m 2. Reference numeral 64c, in turn, denotes a base paper impregnated with a phenolic resin of 120 to 150 g / m 2. Instead of or in addition to melamine resin, e.g. phenolic resins and polyester resins.

With regard to the general manufacturing technique of plastic laminate 64, reference is made here to the prior art = Koponen, H 1991, processing and development of wood products 538, Otatieto Oy, Espoo.

E Plastic laminate 64 can be treated as antimicrobial in various ways: only its N 30 - top decorative paper 642, 64b, top decorative paper 642, 64b io and top surface film 64 ", 64a or all films 647 ... 64 ° can be treated antimicrobially.

In addition, the top surface film 647, N 64a can also be omitted and the top decorative paper 64?

The amount of antimicrobial silver in all treatments is 0.005 to 0.1% by weight, however, based only on the resin batches of the silver-treated films.

Silver is added to the films among a suitable additive.

Preferably, the silver is added bound to the support, i.e., either as a silver phosphate glass or as a zeolite, to a film-forming resin such as a melamine resin when the paper is impregnated with the resin.

By selecting only a certain plastic laminate film (s) 64 '... $ 64 for antimicrobial treatment, a very cost-effective treatment method suitable for large production volumes is obtained.

In a preferred embodiment, silver was added to the plastic laminate 64 as silver phosphate glass.

The general formula of the silver phosphate glass was CasoNa 2 O-xPsoAgx, where X = 0.1 to 10, preferably 0.5 to 5. The silver phosphate glass-treated plastic laminate 64 thus produced can be used as a laminate coating in, among other things, a laminate coating 310c above a wood-paneled table top 31, a laminate coating above a receiving counter 5, a laminate coating 11c for a chair backrest 11 or a chair cover 1c.

The surface of the table top 31 and the receiving counter 5 are usually treated only from above, i.e. from the use side with silver phosphate glass. Fig. 7G schematically shows the area of the end of the wooden table top 31

An elongate antimicrobial polymer edge 33d, 63 is formed at the end of the table top 31 in the direction of the top edge 31b of the table top.

An antimicrobial silver compound, such as the above-mentioned silver phosphate glass having the general formula Ca3soNazo-x <P50Agx) in which x = 0.1 to 10, preferably x = 0.5 to 5, is added to the polyurethane resin (edge molding) or polyes blade resin (edge band) in the polymer edge manufacturing step.

A Figures 5A and 5B each show a plurality of antimicrobial furniture assemblies separated by room dividers (s). 87, 8; 82, 8; 8% 8; 84 ... 8 ". The furniture belonging to each of the 2 furniture assemblies 8; 87, 8; 82, 8; 83: 8; 84, etc. is intended to be used simultaneously.

In the following, the three furniture assemblies 8: 8 ', 8; 8? and 8; 83. Thus to the set of furniture visible on the right 8; 8! includes a table 3 with a metal-coated table top 30.

The vertical edge 30b of the metal table top adjoining the top and bottom of the table top may be provided with a polymer edge 30d such as an edge strip 30e or an edge cast 30f. If the table top is made entirely of antimicrobial brass or copper alloy with at least 60% copper, the vertical edge 30b may be left untreated.

However, if the vertical edge 30b of the metal-coated table 3 has a polymeric edge 30d, it is formed antimicrobially by adding to the polyurethane resin in the casting step an amount of silver compound bound to the support such that the polyurethane casting polymeric edge has a thickness of % by weight of the polyurethane resin used to cast said polymeric edge.

- The polymeric edge 30d of the metal-coated table 3 can be formed antimicrobial, also such that the polymeric edge is an edge band 30e formed antimicrobicid by adding 0.5 silver -4 mm contains 0.005% to 0.1% by weight of silver, based on the weight of the polyester resin or abs resin used to make the edge band. This furniture set 8; 8! the metal-coated table 3 thus belonging is thus very similar to the structure of the table top and the stand and the antimicrobial treatment of the table top previously illustrated in Fig. 3. The 3-leg 35 of this table; 35a, with respect to the manufacture of the antimicrobial powder coating, the thickness of the coating and the amount of silver in the coating, reference is made to Figure 7F and its description. N Figure 5A also shows two similar furniture assemblies 8 in the foreground center and left; 8? and 8; 83, which consists of an electric table 3 provided with adjustable legs and both an office chair 2. The general structure of both the office chair 2 and the electric table and the antimicrobial coatings are similar to those previously described in connection with the description of Figs. 2A and 2B.

N Fig. 5B also shows various furniture assemblies 8 used in an open-plan office; 8, 8; 82 ... 8; 87. Furniture assemblies 8; 8? ... 8; 87 comprise similar furniture assemblies consisting of an electric table 3 provided with adjustable legs and an office chair 2. The general structure of both the office chair 2 and the electric table and their antimicrobial coatings are similar to those previously described in connection with the description of Figures 2A and 2B.

The table top made of the furniture board of the electric table 3 is coated on the top with a plastic laminate coating 310c, and in the manufacturing step of the plastic laminate coating 310c, silver compounds bound to the carrier against.

- The plastic laminate coating (or backing paper) on the underside of the electrical table 3 is generally not considered to be the contact surface (cf. the description of the electrical table coatings in Figure 2A). Here again, an antimicrobial polymer edge containing silver was formed from the vertical edge adjoining above the electric table 3, the silver content and the manufacturing method of which are referred to herein in Fig. 7G and its description.

Figure 6 illustrates two different sets of furniture 8; 81 and 8; 82. First set of furniture in the foreground 8; 81 comprises a reception desk 5 with two associated office chairs 2; 2! and 2; 22.

Second set of furniture visible in the rear 8; 8? in turn comprises a conference table 3, a sofa 7 and a customer chair 1.

- Furniture set 8; 8? the structure and treatment of the sofa 7 as antimicrobial is similar to that described above in the furniture assembly 8 of Fig. 5B; 81. The sofa 7 consists of a seat part and a backrest part, which, with the exception of the sofa legs, are covered (upholstered) around it with a fabric upholstery N having an antimicrobial treatment. The customer chair is also upholstered throughout with fabric upholstery 66 with antimicrobial treatment. The antimicrobial textile upholstery of the sofa 7 is made microbicidal by incorporating silver I-containing polyamide fibers or isothiazolidine compounds or organofunctional silanes as described in more detail, e.g. in connection with the description of Figure 7B.

N Lo Conference table 3 has a table top made of furniture board or solid wood,> 30 - below which four wooden table legs extend downwards. The table top may be coated with a laminate coating, preferably a plastic laminate coating.

as shown in Figure 7C and its specification.

The top film of the plastic laminate (decorative paper + melamine resin) contains 0.005% to 0.1% by weight of silver, based on the weight of the melamine resin added to the top film.

The receiving counter 5 comprises a base 55 on which rests a plate-like operating surface 50 made mainly of wood. The base 55 has a wooden surface which may be covered with a plastic laminate or a plastic film.

Not all surfaces of the stand 55 are generally considered to be contact surfaces, but only the front of the stand facing the customer.

This part of the stand is generally considered to be a contact surface and its plastic laminate coating (melamine resin based) is treated as antimicrobial, as illustrated in connection with Figure 7C.

The surface 50a side of the use plane 50 is provided with an antimicrobial coating, which may be a paint coating, a plastic laminate coating, or a plastic film.

Such an antimicrobial coating has been tested in accordance with ISO 22196 or JIS 2 2801 and eliminates at least 95% of the selected bacteria used in the test.

The vertical edges 53 of the use plane 50 are provided with a polymeric edge, which may be an edge strip or an edge molding, the manufacture of which as antimicrobial has been described previously.

Thus, if the polymeric edge is a polyester-based edge band 33d, said edge band is formed antimicrobial by adding silver bound to the carrier to the polyester resin forming the edge band to the extent that the edge band having a thickness of 0.5 to 4 mm contains silver 0.005 to 0.1 p % by weight of polyester = 25 resin used to make the edge band.

Such an antimicrobial coating shall be retested in accordance with ISO 22196 N or JIS Z 2801 and shall eliminate at least 95% of the bacteria used in the test. - - The polymer rim could also be an edge casting made of polyurethane with a thickness of 1-5 mm and mixed with 0.003-0.1 wt. polyol + isocyanate) by weight.

N If the cover of the use tray 50 is coated with a plastic laminate, preferably a melamine laminate, it is provided with an antimicrobial silver compound in a manner similar to that described in more detail in Fig. 7C.

In this case, the melamine laminate 641, which is then the laminate coating of the receiving counter 5 made of wood material. The plastic laminate 64 can be treated as an antimicrobicide in various ways - as described in Figure 7C. However, the amount of antimicrobial silver in all treatments is 0.005 to 0.1% by weight, calculated only for films treated with silver. Preferably, the silver is added bound to the support, i.e., either as a silver phosphate glass or as a zeolite, to a film-forming resin such as a melamine resin when the paper is impregnated with the resin. In a preferred embodiment of the invention, silver was added to the working plane plastic laminate as silver phosphate glass. The general formula of the silver phosphate glass was Ca3oNa2O- <PsoAgx, where X = 0.1-10, preferably 0.5-5. The silver phosphate-treated plastic laminate 64 thus prepared can be used as a laminate coating in the laminate coating 50a above the other use plane 50. The lower surface of the customer service counter 5 is usually treated only with silver phosphate glass from above, i.e. from the use side. The other side, i.e. the underside of the operating plane associated with the stand 55, is usually left untreated antimicronically.

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Reference number list 1 Chair, multiple legs 11-14 customer chair set chair seat level 10a textile upholstery 10a1,10a2, 10a3, 10a4 various textile upholstery 10b wood veneer coating 10c plastic laminate coating 10

N CL | 105d wood paint coating 7 10e wood surface

O

N T 11 backrest = N 20 110 backrest support frame made of wood

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Backrest support frame made of LO> 112 metal

N 113 backrest 11a textile upholstery

11b wood veneer coating 11c plastic laminate coating 11d paint coating 11d1 lacquer coating 11d2 (wood) paint coating 11d3 powder coating 115 backrest edge, edging 115d paint coating 13 chair leg, metal 130 chair legs 14 metal armrest 14 | 15 chair legs, wooden 7 150 wooden table legs

N I 15d wood paint coating N 20 16 combined chair leg and armrest, wooden

LO 2 16a armrest section

N 16b leg section 17 wooden armrest

17d wood paint coating 2 office chair, pole leg 20 office chair seat 20a textile upholstery 21 back support, backrest 21a textile upholstery 22 headrest 22a textile upholstery 23 adjustable foot 27 armrest 27a support arm 28b stand 29 adjusters 3 table table top, metal

O

N I 30b vertical edge of table top N 20 30d polymer edge>> 30e edge strip & 30f edge casting 31 table top, wood surface

31a table top 310a paint coating 310b wood veneer coating 310c plastic laminate coating 310d plastic film 33 table top vertical edge 33a paint surface, paint coating 33d polymer edge 33e edge strip 33f edge casting 31b table top underside 320a paint surface 320b wood veneer 320b wood veneer | 34a post leg 7 34b edge leg

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N I 35 table leg, metal N 20 35a post leg>> 35b edge leg

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Leg 4 cabinet with N 35c adjustment mechanism

41 cabinet 41a Door 41b puller 41c roof 5 counter 50 operating level 50a cover 53 vertical edge 55 stand 6 antimicrobially treated material 60 metal surface 61 paint coating 61a powder coating 61b wood coating 62 lacquer 621, 62? lacquer coating layers / films N. | 63 polymer edge 7 64 plastic laminate

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N I 641..64 $ plastic laminate films N 20 641 melamine laminate> 2 64a surface film

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N 64b decorative paper 64c base paper

65 plastic film 65a melamine film, self-adhesive 66 textile upholstery 66a silver bonded to polyamide fibers 66b silane derivative 66c isothiazolidine 67 injection molded part 68 brass surface 69 copper surface 7 sofa 8 Furniture set 81,82,82 furniture set chair set 9

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Claims (24)

Patent claims An antimicrobial wood-based furniture (1, 2, 3, 5) having a plastic laminate coating comprising a plastic laminate coating installed on the surface of the furniture, advantageously its contact surface, which laminate coating has a thickness of 0.4-1.4 mm and which laminate coating comprises one or more superimposed films (641,645), each of which consists of resin, in particular melamine resin or polyester resin, impregnated paper, characterized in that antimicrobial effect against at least S.aureus and E.coli has been arranged in the plastic laminate coating of the furniture, wherein = the antimicrobial effect of the plastic laminate coating tested according to standards ISO 22196 or JIS 2 2801 eliminates at least 95% of the bacteria used in the test, the antimicrobial effect of the furniture plastic laminate coating has been achieved by impregnating one or more films in the plastic laminate coating with at least one batch of resin containing silver in such quantity as each film containing silver in the laminate coating has silver in an amount of 0.005-0.1 v-%, calculated from the total weight of the resin contained in each film containing silver, and the antimicrobial effect of the plastic laminate coating has been achieved by impregnating a paper comprising the top of the plastic laminate coating. multi-batch resin film, in the last of which batches of resin have been added an additive containing silver in such an amount that the top film of the laminate coating contains silver in an amount of 0.005-0.1 v-%, calculated by the = total weight of the resin batches included in said top film, wherein S in the top film of the plastic laminate coating has formed a gradient that T comprises antibacterial silver (Ag), where the amount of silver increases as one goes from the inner part of the N paper to its surface layer, by impregnating the decorative paper of the plastic laminate coating with two consecutive N sets of resin, such as polyester or melamine resin sets, so that only in the N last batch of resin has added an additive containing silver in such an amount that the top film of the laminate coating contains silver in an amount of N 0.005-0.1 v-%, calculated from the total weight of the resin batches used in the manufacture of said film. An antimicrobial wood material-based piece of furniture (1, 2, 3, 5) according to claim 1, which piece of furniture is a table (3) having a table top made of wood material, to which the lower side of the table top made of wood material is connected one or more table legs in wood or metal legs, the upper side of the table top made of wooden material being equipped with a plastic laminate coating, which has a thickness of 0.4-1.4 mm and which laminate coating comprises one or more superimposed films (641,645), of which each film is constituted of resin, in particular melamine resin or polyester resin, impregnated paper, characterized in that an antimicrobial effect against at least S.aureus and E.coli has been arranged in the plastic laminate coating of the table top, the antimicrobial effect of the plastic laminate coating being tested according to ISO 22196 or 95% the bacteria used in the test, table top = plastic laminate coating antimicrobial = effect has been achieved by impregnating one or more films in the plastic laminate coating with at least one batch of resin, in which an additive containing silver has been added in such an amount that each film containing silver in the laminate coating has silver in an amount of 0.005-0.1 v%, calculated from the total weight of the resin contained in said film. An antimicrobial wood material-based table (3) according to claim 2, wherein at least one vertical edge (30b, 33) (A12, A22) of the table top made of wood material is further equipped with a polymer edge (33d, 63), in which antimicrobial has been arranged effect against at least S.aureus and E.coli by adding to the polymer edge an additive containing silver, so that the N polymer edge antimicrobial effect tested according to standards ISO 22196 or N JIS Z 2801 eliminates at least 95% of the bacteria used in the test, = characterized of that the polymer edge is O - an elongate of polyester-based or acrylic-butadiene-styrene-based resin = prepared edging (33e), having a thickness of 0,5-4 mm, and containing N silver (Ag) in an amount of 0,005-0,1 v-% calculated from the total weight of the polyester-based or acrylic-butadiene-styrene-based resin contained in the edging strip S (33e) or an elongated polyurethane-based polymer casting (33f) having a thickness of 1-5 mm, and which polymer casting contains silver (Ag) in an amount of 0.005-0 , 1 v-% calculated from the total weight of the polyurethane-based resin (polyol + polyisocyanate) contained in said polymer casting. An antimicrobial wood-based table (3) according to claim 2 or 3, characterized in that also the lower surface of the table top (30, 31) made of wood is equipped with a plastic laminate coating (310c, 64), which has a thickness of 0.4- 1.4 mm and which laminate coating comprises one or more superimposed films (641,645), each of which consists of resin, in particular melamine resin or polyester resin, impregnated paper, characterized in that in the lower surface of the table top plastic laminate coating has been arranged antimicrobial - effect against at least S.aureus and E.coli, the antimicrobial effect of the plastic laminate coating tested according to ISO 22196 or JIS 2 2801 eliminating at least 95% of the bacteria used | the antimicrobial effect of the lower surface of the table top plastic laminate coating has been achieved by impregnating one or more films in the plastic laminate coating with at least one batch of resin, in which an additive containing silver in such an amount has been added that the resin batch has silver (Ag) in such an amount , that each film containing silver in the laminate coating has silver in an amount of 0.005-0.1% by weight, calculated from the total weight of the resin contained in said film. O An antimicrobial wood material-based table (3) according to claim 4, - characterized in that the upper and A lower surface of the table top (31) made of wood material is equipped with a plastic laminate coating made of polyester or melamine resin, in which antimicrobial effect has been arranged on a method = defined in claim 8. 3 A wood material-based antimicrobial table (3) according to claim 4 or 5, characterized in that the lower surface N of the table top made of wood material is equipped therewith with a glueable plastic film or a counter paper, in which antimicrobial effect against at least S.aureus and E.coli by adding an additive containing silver to the plastic film or backing paper so that the plastic film or backing paper has an antimicrobial effect as tested according to ISO 22196 or JIS 2 2801 eliminates at least 95% of the bacteria used in the test, the plastic film or backing top layer comprises a paper impregnated with a polyester, melamine, urea or phenolic resin, in which an additive has been added, which comprises carrier-bound silver in an amount of 0.005-0.1 v-% calculated from the weight of polyester , melamine, urea or phenolic resins added to the decorative paper. A wood material-based antimicrobial table (3) according to claim 2 or 6, characterized in that the decorative paper of the table top plastic laminate is impregnated with a polyester, melamine, urea or phenolic resin, which contains 0.005-0.10 v-% carrier-bound silver calculated from the said amount of polyester, melamine, urea or phenolic resin added to the decorative paper. An antimicrobial wood-based furniture according to claim 1, which furniture is an antimicrobial chair with a wooden frame, the upper side or back part of the seat, especially the back part of the backrest, is coated with a plastic laminate coating, which laminate has a thickness of 0.4-1.4 mm and which laminate coating comprises one or more superimposed films (64 '... 64 °%), each of which is made of resin-impregnated paper, characterized in that | the plastic and / or backrest plastic laminate coating has been provided antimicrobial - effect against at least S.aureus and E.coli, the antimicrobial effect of the plastic laminate coating tested according to standards ISO 22196 or JIS 2 2801 eliminating at least 95% of the bacteria used | the test, the antimicrobial effect of the O-seat and / or the back part of the O-seat and / or the back part - has been achieved by impregnating one or more films in the A plastic laminate coating with at least one batch of resin, in which one has been added - an additive containing silver in such an amount silver in the laminate coating has silver in an amount of 0.005-0.1 v-%, calculated N of the total weight of the resin contained in said film. N o An antimicrobial chair (1, 2) with a wooden frame according to claim 8, wherein N comprises a seat (10, 20) with a wooden frame, to which a backrest (11, 21) directed upwards from the seat (10, 20) is joined, which backrest consists of either a back part (113, 21) or a wooden, plastic or metal support frame (110, 112), in which a back part (113) with wooden surface rests, and in addition is joined to the seat (10, 20) of said chair with one or more wooden frames at the bottom of the seat coupled, downwardly directed chair legs (15, 13), in which chair (1, 2) the upper side of the seat is equipped with a plastic laminate coating (10c), in which antimicrobial effect has been arranged, or the back part (113, 21) is equipped with a plastic laminate coating (11c), in which antimicrobial effect has been provided in a manner defined in claim 9. Antimicrobial wooden material-based chair (1, 2) according to claim 8 or 9, characterized in that also the chair legs of the chair (1) or the work chair (2), and / or the upper side and / or the side surfaces of armrests (14, 27) which are coupled to the backrest, are provided with a plastic laminate coating (64), in particular a polyester or melamine laminate coating, having a thickness of 04-14 mm and comprising one or more superimposed films (64! ... 645), each of which film consists of resin impregnated paper, the antimicrobial effect of the plastic laminate coating of the seat and / or the back part being achieved by impregnating one or more films in the plastic laminate coating with at least one batch of resin, in which an additive containing silver is added in such an amount that each film containing silver in the laminate coating has silver in an amount of 0.005-0.1% by weight, calculated from the total weight of the resin contained in said film. Antimicrobial chair according to claim 10, characterized in that on the upper and / or side surfaces of the wooden surfaces of the armrests there are mainly plastic laminates made of polyester or melamine resin, which have a thickness of 0.4-1.4 mm, containing silver (Ag) in an amount of 0.005-0.1 v-% calculated from the weight of - the resin in the silver-treated laminate film, and where the silver is A mainly in the top decorative paper, which is treated with a resin - containing silver compound. a a An antimicrobial wood-material-based piece of furniture (1, 2, 3, 5) according to claim 1, N which piece of furniture is a counter (5) such as a receiving counter, which has a disc-shaped use level (50) made mainly of wood material which N comprises the use level upwards facing cover (50a) and the lower side of the utility level, to which the lower side has been connected a column (55) made directly of wood material directed downwards from the utility level of the counter, the surface (50) of the cover (50a) of the counter (50) being equipped with a plastic laminate coating , in which antimicrobial effect has been provided, which plastic laminate coating has a thickness of 0.4-1.4 mm and which laminate coating comprises one or more superimposed films (641,645), each film of which is made of resin-impregnated paper, characterized by that in the plastic laminate coating of the disk (5) an antimicrobial effect has been arranged against at least S.aureus and E.coli, the antimicrobial effect of the plastic laminate coating being tested according to standards ISO 22196 or JIS 2,2801 eliminates at least 95% of the bacteria used in the test, the antimicrobial = effect of the plastic laminate coating of the disk (5) has been achieved by impregnating one or more films in the plastic laminate coating with at least one batch of resin in which a silver-containing additive has been added. amount that each film containing silver in the laminate coating has silver in an amount of 0.005-0.1% by weight, calculated from the total weight of the resin contained in said film. An antimicrobial wood-based disk (5) according to claim 12, wherein at least one vertical edge (53) of the utility level (50) is further provided with a polymer edge, in which antimicrobial effect against at least S.aureus and E.coli has been provided, wherein the antimicrobial effect of the polymer edge tested according to standards ISO 22196 or JIS 2 2801 eliminates at least 95% of the bacteria used in the test, characterized in that the polymer edge is an elongated polyester-based or acrylic butadiene styrene-based resin-produced edging (33e) having a thickness of 0.5 -4 mm, and containing 0 silver (Ag) in a proportion of 0,005-0,1 v-% calculated from the total weight of the - polyester-based or acrylic-butadiene-styrene-based resin containing the edging strip ea (33e) or E an elongated polyurethane-based polymer casting ( 33f) which has an N thickness of 1-5 mm, and which polymer casting contains silver (Ag) in an N amount of 0.005-0.1 v-% calculated from the total weight of the> pol yurethane-based resin (polyol + polyisocyanate) containing the S polymer casting, an elongated polyester polymer-based or abs-polymer-based edging (33e), having a thickness of 0,5-4 mm, containing silver (Ag) in an amount of 0,005-0,1 v-% calculated from the total weight of polyester or the abs resin used in the preparation of the polymer contained in the edging (33e) or an elongated polyurethane-based polymer casting (33f) having a thickness of 0,5-5 mm, preferably 1-5 mm, and which polymer casting contains silver (Ag ) in an amount of 0.005-0.1 v-% calculated from the total weight of the polyurethane resin (polyol + polyisocyanate) used for said polymer casting. Antimicrobial wood material-based disk (5) according to claim 12 or 13, characterized in that also the column (55) made of wood material, which is coupled at the lower side of said level of use, is coated with plastic laminate (11c, 64), in which it has been arranged antimicrobial effect against at least S.aureus and E.coli, the antimicrobial effect of the laminate coating tested according to standards ISO 22196 or JIS Z 2801 eliminating at least 95% of the bacteria used in the test, said laminate coating having a thickness of 0.4-1.4 mm, and said laminate coating comprises one or more superimposed films (641,645), each film of which is resin impregnated paper and the antimicrobial effect of the plastic laminate coating has been achieved by impregnating one or more films in the plastic laminate coating with at least N a batch of resin, in which has been added to an additive containing silver in such an amount of N that each film containing silver in laminate coatings has a silver in a T amount of 0.005-0.1% by weight, calculated from the total weight of the resin contained in said film. = = An antimicrobial wood-based furniture according to any one of the preceding claims, characterized in that the additive containing silver having S added to the resin set (64c) of the plastic laminate coating or to the polymer (63) formed> of the polymer edge, especially the edge casting or edging, comprises silver bonded in a solid carrier compound, such as silver bound in phosphate glass or zeolite. An antimicrobial wood-based furniture according to claim 15, characterized in that the additive comprises silver phosphate glass, the general formula of which is Ca An antimicrobial wood-based furniture according to claim 1, characterized in that the frame of the table top (31) is made of a furniture board, such as chipboard, veneer or fibreboard, especially MDF board. A method of coating a piece of furniture with a plastic laminate coating according to claim 1, characterized in that the method comprises the following steps: manufacturing a plastic laminate coating (310c, 64), which plastic laminate has a thickness of 0.4-1.4 mm, by gluing on top of each other several films (641 ... 645), each of which consists of resin, in particular with melamine resin or polyester resin, impregnated paper, the one or more films of the plastic laminate coating being impregnated with at least one batch of resin during the production of the plastic laminate coating, in which an additive containing silver has been added in such an amount that each film of the laminate coating containing silver has silver in an amount of 0.005-0.1 v%, calculated from the total weight of the resin contained in said film, each film treated with silver having an antimicrobial effect against at least S.aureus and E.coli, said antimicrobial of the selected plastic laminate coating power tested according to ISO 22196 or JIS Z 2801 standards eliminates at least 95% of the bacteria used | the test, - coating the surface of a piece of furniture with the plastic laminate coating. Process according to Claim 18, characterized in that only the uppermost N decorative paper is treated with a polyester or melamine resin which contains a silver compound. e Process according to Claim 18 or 19, characterized in that silver is added in the form of silver bound in a solid carrier compound, such as phosphate glass or zeolite. N io Process according to Claim 20, characterized in that the silver is added as S silver phosphate glass, the general formula of which is Ca 3 O Method according to claim 18, characterized in that the plastic laminate is a low-pressure laminate, where the paper layers are first impregnated with resin and then superimposed paper layers have been pressed together with a compression pressure below 4.0 MPa. An antimicrobial plastic laminate coating (310c, 64), which can be adapted to the surface of a wood-based furniture in a manner defined in claim 18 by using a plastic laminate coating defined in claim 1, wherein | the plastic laminate coating has been arranged antimicrobial effect against at least = S.aureus and E.coli so that the antimicrobial effect of the plastic laminate coating tested according to standards ISO 22196 or JIS 2 2801 eliminates at least 95% of the bacteria used in the test and said plastic laminate coating has a thickness of 0,4 1.4 mm, and it is produced by gluing on each other several films (641,645), each film consisting of resin impregnated paper, characterized in that said antimicrobial effect of plastic laminate coating has been achieved by impregnating one or more films in the plastic laminate coating with at least one batch of resin, in which an additive containing silver has been added in such an amount that each film containing silver in the laminate coating has silver in an amount of 0.005-0.1 v-%, calculated from the total weight of the resin contained in said film. The plastic laminate coating according to claim 23, wherein the plastic laminate coating is a low pressure laminate, where the paper layers are first impregnated with resin and then superimposed paper layers have been pressed together - with a compression pressure below 4.0 MPa. O N - N I a a N N LO o O N