KR200282842Y1 - Printed wooden flooring - Google Patents

Abstract

The present invention relates to a printed wooden floorboard, comprising: a) a wooden substrate; b) a UV curable putty layer; c) a UV curable base color layer; d) a UV curable printed layer; e) UV curable undercoat; f) a UV curable middle layer; And g) a UV curable top coat layer.

The printed floorboard of the present invention is a floorboard having a high-quality texture by forming various colors and vivid patterns by forming a UV-curable printing layer on a low-grade wood material such as plywood, and having excellent adhesion and wear resistance between layers.

Description

Printed Parquet {PRINTED WOODEN FLOORING}

The present invention relates to a wooden floorboard, and more particularly to a printed wooden floorboard.

Conventional printed wooden floorboards form an aqueous base color layer on a lower wood substrate, such as plywood, and a printed layer using solvent thereon, and then form a UV cured top coat as the final top. This method has a problem in that the adhesion between the layers is weak because each print layer and the bottom, middle, and top coat layers are different, and the UV top layer alone is too weak to protect the print layer due to the characteristics of the floorboard.

In addition, in order to preserve the natural pattern of wood substrates such as plywood, the pattern may be printed directly on wood substrates such as plywood, as disclosed in Korean Utility Model Publication No. 1999-39074.In this case, the printing ink is clean by spreading along the fibers of wood. If you cannot print clearly and cannot completely hide the natural pattern of wood materials such as plywood only by printing ink, the natural pattern of wood materials such as plywood is different from the pattern you want to print, or you can print on MDF, PB, HDF, etc. If there is no problem, the desired printed pattern cannot be obtained.

The present invention has been made in view of the problems of the prior art, and an object of the present invention is to provide a printed floorboard having a high-quality printed layer having excellent interlayer adhesion of each layer coated on a wooden substrate such as plywood and having excellent wear resistance.

Another object of the present invention is to provide a printed floorboard in which a clear and clean pattern is printed without bleeding of the printing ink.

It is yet another object of the present invention to provide a printed floorboard exhibiting a high quality texture from a low quality wooden substrate.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the coating layer of the printed wooden floorboard of this invention.

Reference numeral 1 is a wood substrate, 2 is a UV curable putty layer, 3 is a UV curable base color layer, 4 is a UV curable print layer, 5 is a UV curable undercoat layer, 6 is a UV curable middle layer, and 7 is UV curable top coat layer.

The present invention, in order to achieve the above object, in the printed wooden floorboard,

From below

a) wood substrate;

b) a UV curable putty layer;

c) a UV curable base color layer;

d) a UV curable printed layer;

e) UV curable undercoat;

f) a UV curable middle layer; And

g) UV curable top coat

It provides a printed wooden floorboard comprising a.

Hereinafter, the present invention will be described in detail.

The present invention provides a printed floorboard having a high-quality print layer with excellent interlayer adhesion of each layer to be painted, excellent wear resistance, and clear and clean patterns without smearing of printing ink. It is intended to exhibit a high quality texture from the wood substrate. In addition, when a high hardness ceramic powder such as alumina is included in the upper and upper coats, it is possible to have higher wear resistance and mirror surface.

Specifically, after the putty layer is formed on a lower wooden substrate such as plywood, particle board (PB), middle density fiber board (MDF), high density fiber board (HDF), and the like, a base color layer is formed thereon. A print layer having a predetermined pattern is formed on the base color layer. Next, a transparent or translucent undercoat, a middlecoat, and a topcoat layer are formed to protect the printed layer. That is, the base color of the floorboard is to be expressed in the lower layer, to implement a predetermined pattern in the printed layer thereon, and to protect the printed layer on the surface. Therefore, the printing state is clear and the surface performance as a floor is excellent. In addition, each layer is made of UV (ultra-violet) curable resin, there is no heterogeneous layer between each layer is excellent adhesion between layers.

Hereinafter, each layer will be described.

The UV curable putty layer of b) makes the uneven surface of the wood substrate flat and fills the base. At this time, when the UV curing putty layer is cured and polished, a flatter mirror surface can be obtained, and a clear color and a clear printed layer can be obtained.

For this purpose UV curable putty layer

340 to 460 parts by weight of polyurethane or epoxy acrylate resin;

300 to 400 parts by weight of a bifunctional acrylate monomer;

140 to 190 parts by weight of a multifunctional acrylate monomer;

43 to 57 parts by weight of a thickener;

26 to 34 parts by weight of the photoinitiator; And

4 to 6 parts by weight of antifoam

UV-curable putty paint containing a coated with a dry coating thickness of 40 to 60 ㎛ (preferably maintaining the coating amount of 50 g / ㎡) on a substrate such as wood plywood, and then UV-cured to prepare. It is desirable that such putty layer is hardened by ultraviolet rays to be completely cured and then polished finely to make a mirror surface.

The UV curable base color layer of c) is to provide the effect of completely blocking the discoloration of the base material than when printing directly on the substrate such as wood plywood using the base color. In particular, it was difficult to obtain a mirror surface (mirror surface) by applying a large amount of an aqueous emulsion directly onto the base material at about 100 g / m 2, but a small amount of UV curable base color paint was applied on a finely ground putty at about 20 g / m 2. Can get In addition, since the UV curable resin is used, strong chemical bonding can be achieved between the putty layer below and the printing layer above, thereby obtaining strong interlayer adhesion.

For this purpose, the UV curable base color layer is

470 to 630 parts by weight of polyurethane or epoxy acrylate resin;

43 to 57 parts by weight of monofunctional acrylate monomer;

64 to 86 parts by weight of the bifunctional acrylate monomer;

64 to 86 parts by weight of the multifunctional acrylate monomer;

68 to 92 parts by weight of a solvent such as ketone;

17 to 23 parts by weight thickener;

85 to 115 parts by weight of pigment;

21 to 29 parts by weight of photoinitiator; And

Defoamer 21 to 29 parts by weight

UV-curable base color paint comprising a coated with a dry coating thickness of 15 to 20 ㎛ (preferably maintaining a coating amount of 18 g / ㎡) on the wood plywood with the putty layer is prepared by UV curing. Such a UV curable base color layer is preferably to be semi-radiated by weakly irradiating ultraviolet light.

The UV curable printing layer of the d) is a layer to give a predetermined pattern to the wooden floorboards,

85 to 115 parts by weight of pigment;

119 to 161 parts by weight of epoxy acrylate resin;

300 to 400 parts by weight of a bifunctional acrylate monomer;

290 to 390 parts by weight of a multifunctional acrylate monomer;

34 to 46 parts by weight of photoinitiator;

0.85 to 1.15 parts by weight of a polymerization inhibitor;

14 to 20 parts by weight of reaction accelerator (preferably amine); And

8.5 to 11.5 parts by weight of a wax (anti-scratch; preferably polyethylene)

It is preferable to produce a printing ink containing a coating film with a dry coating thickness of 10 to 15 μm (preferably maintaining a coating amount of 15 g / m 2) on the wood laminate substrate on which the base color layer is formed. The printing method may use various methods, and gravure printing is particularly preferable. It is preferable that such a printed layer is semi-cured by weak ultraviolet rays, and then, even after coating the intermediate layer, it is preferably cured by incorporating strong ultraviolet rays and completely integrated.

The UV curable undercoat layer of e) and the UV curable intermediate layer of f) are layers for protecting the printed layer below, and provide a stronger mirror surface (strong surface). In particular, the inclusion of ceramic powder (400 mesh traditional powder) such as alumina provides stronger wear resistance, stronger mirror surface, and far-infrared emission effect. Under such a condition, if the intermediate degree is not painted, the printed floor board becomes weak as a flooring material. The undercoat and the intermediate layer are layers that connect and integrate the lower wood veneer substrate, the putty layer and the upper print layer and the upper coat layer.

Therefore, after initial application, it is semi-hardened with weak ultraviolet light (semi-dry state is physically the same as complete dry, and UV-curable medium to be applied thereon is dry enough to chemically crosslink with the top), After forming the top layer, strong ultraviolet light is applied to the top layer to integrate the top layer.

If necessary, after complete curing with strong UV light, polish finely with abrasive paper and apply top coat.

For this purpose, the UV curable undercoat is

255 to 345 parts by weight of polyurethane or polyester resin;

470 to 630 parts by weight of epoxy acrylate resin;

47 to 63 parts by weight of a multifunctional acrylate monomer;

Antifoam 8.5-11.5 parts by weight;

30 to 40 parts by weight of photoinitiator; And

30 to 70 parts by weight of ceramic powder (wear resistance and far infrared emission), if necessary

A UV curable undercoat comprising a coating is formed by coating with a dry coating thickness of 50 to 80 μm (preferably maintaining a coating amount of 50 g / m 2) on the wood laminate substrate on which the printing layer is formed.

In addition, the UV curable middle layer

285 to 385 parts by weight of polyester resin;

425 to 575 parts by weight of epoxy acrylate resin;

30 to 40 parts by weight of the polyfunctional acrylate monomer;

Antifoam 8.5-11.5 parts by weight;

43 to 57 parts by weight of photoinitiator;

51 to 69 parts by weight of an abrasive; And

Smoothing agent 8.5 to 11.5 parts by weight

A UV curable intermediate paint comprising a coating is formed by coating with a dry coating thickness of 50 to 80 μm (preferably maintaining a coating amount of 60 g / m 2) on the wood laminate substrate on which the undercoat is formed.

The UV curable top coating layer of g) is a layer which protects the printed layer and the surface of the floorboard and provides wear resistance to the floorboard. In particular, the inclusion of a ceramic powder such as alumina (400 mesh traditional powder) provides a stronger wear resistance and antimicrobial effect.

For this purpose, the UV curable topcoat is

540 to 740 parts by weight of polyurethane or polyester resin;

85 to 115 parts by weight of epoxy acrylate resin;

25 to 35 parts by weight of monofunctional acrylate monomer;

30 to 40 parts by weight of a matting agent (such as silica);

8 to 12 parts by weight of wax;

95 to 135 parts by weight of a solvent (preferably ketone, xylene, isopropyl alcohol);

25 to 35 parts by weight of photoinitiator;

Leveling agent 8.5 to 11.5 parts by weight; And

25 to 35 parts by weight of ceramic powder (wear resistance and antibacterial), if necessary

It is preferable that the top coat comprising a coated with a dry coating thickness of 10 to 20 ㎛ (preferably maintaining the coating amount of 15 g / ㎡) on the wood laminated substrate formed with the intermediate layer is preferably produced. This top coat is subjected to strong ultraviolet rays after application so as to fully cure.

The coating method of each layer can be carried out in a variety of ways, preferably by using a roller coating.

Printed wooden floorboards of the present invention to fit the floorboards

The thickness of the a) wood substrate is 6 to 15 mm, the thickness of the b) putty layer is 40 to 60 ㎛, the thickness of the UV curable base collar layer of c) is 15 to 20 ㎛, The thickness of the ultraviolet curable printed layer is 10 to 15 μm, the thickness of the ultraviolet curable undercoat layer of e) is 50 to 80 μm, the thickness of the ultraviolet curable intermediate layer of f) is 50 to 80 μm, and g) It is preferable that the thickness of the ultraviolet curable top coat layer is 10-20 micrometers. The thickness of such wooden floorboards can be added or subtracted from each layer as needed, and is not an absolute thickness.

The floorboard of the present invention manufactured as described above may be made of a high-quality floorboard including a natural wood pattern from a wooden substrate such as a low-grade plywood.

The present invention will be described in more detail with reference to the following examples. However, the examples are provided to illustrate the present invention and are not limited thereto.

EXAMPLE

(The furtherance composition)

After the base material of the wood chipboard was prepared and the surface was ground with abrasive paper, the wood powder was shaken off with compressed air or the like.

(Putty layer formation)

The ultraviolet curable putty of the following composition was apply | coated on the base material of a wooden board.

400 parts by weight of polyurethane acrylate resin;

315 parts by weight of trimethylol propylen grilcol diacrylate (TPGDA) as a bifunctional acrylate monomer;

100 parts by weight of trimethylol prophane triacrylate (TMPTA) as a polyfunctional acrylate monomer;

120 parts by weight of AEROSIL 380 (manufactured by DEGUSSA, Germany) as a thickener;

57 parts by weight of ILGACURE 184 (manufactured by CIBAGEIGY, Switzerland) as a photoinitiator;

3 parts by weight of TPO (manufactured by BASF, Germany) as a photoinitiator; And

Antifoaming agent 5 parts by weight of silicone antifoaming agent BYK A 501 (manufactured by BYK, Germany).

An ultraviolet curable putty (manufactured by dimming paint) was applied using a putty roll coater to completely fill the plywood's eyelids, or only a portion of the plywood if necessary. At this time, the putty was applied once or twice depending on the roughness of the base.

The applied putty was then irradiated with an ultraviolet lamp to completely cure completely. The UV lamp used a mercury lamp with a capacity of 80 watt / cm, and one or several lamps were used at the same time depending on the passing speed of the lamp.

The cured putty surface was then ground finely using abrasive paper # 220.

(Base color layer formation)

540 parts by weight of epoxy acrylate resin (manufactured by self);

75 parts by weight of 2-hydroxypropyl acrylate as a monofunctional acrylate monomer;

75 parts by weight of trimethylol propylen grilcol diacrylate (TPGDA) as a bifunctional acrylate monomer;

75 parts by weight of trimethylol prophane triacrylate (TMPTA) as a polyfunctional acrylate monomer;

50 parts by weight of methyl ethyl ketone (MEK) as a solvent;

30 parts by weight of AEROSIL 380 (manufactured by DEGUSSA, Germany) as a thickener;

80 parts by weight of color pigments (manufactured by BASF, Germany);

15 parts by weight of TPO (manufactured by BASF, Germany) as a photoinitiator; And

35 parts by weight of DAROCURE 1173 (manufactured by CIBAGEIGY, Switzerland) as a photoinitiator;

Antifoaming agent 25 parts by weight of a silicone antifoaming agent BYK A 501 (manufactured by Germany BYK).

The UV-curable base color (manufactured by light-painting paint) of the above composition was applied once or several times depending on the color using a general roll coater on the substrate of the wood plywood on which the putty layer was formed. Next, an ultraviolet lamp was applied to the applied base color layer and semi-dried. The UV lamp used an indium-gallium lamp having a capacity of 80 watt / cm, and one or several lamps were used at the same time depending on the passing speed of the substrate.

(Print layer formation)

Printing was performed by gravure printing using a cylinder (used as needed from 1 degree | time to 3 degree | times, etc.). At this time, the printing cylinder is not directly printed on the substrate, the pattern is transferred to the rubber roller that rotates and the rubber roller is printed directly on the substrate.

The composition of the printing ink used is as follows.

100 parts by weight of color pigments (manufactured by BASF, Germany);

140 parts by weight of epoxy acrylate resin (manufactured by itself);

350 parts by weight of trimethylol propylen grilcol diacrylate (TPGDA) as a bifunctional acrylate monomer;

342 parts by weight of trimethylol prophane triacrylate (TMPTA) as a polyfunctional acrylate monomer;

15 parts by weight of TPO (manufactured by BASF, Germany) as a photoinitiator;

25 parts by weight of DAROCURE 1173 (manufactured by CIBAGEIGY, Switzerland) as a photoinitiator;

1 part by weight of hydroquinone as a polymerization inhibitor;

17 parts by weight of amine as a reaction accelerator; And

10 parts by weight of polyethylene wax as wax.

The floorboard thus printed was gelled using a weakly ultraviolet lamp. The UV lamp used a lamp of 80 watt / cm capacity.

(Sublayer formation)

A coat of the following composition was applied on the printed layer once or several times using a rollacotta or a reverse rollacotta.

300 parts by weight of polyester resin (manufactured by itself);

550 parts by weight of epoxy acrylate resin (manufactured by itself);

55 parts by weight of trimethylol prophane triacrylate (TMPTA) as a polyfunctional acrylate monomer;

10 parts by weight of EFKA 2720 (manufactured by EFKA, Netherlands) as an antifoaming agent;

35 parts by weight of BK-6 (manufactured by Miwon Corporation) as a photoinitiator; And

50 parts by weight of alumina ceramic powder (400 mesh traditional).

Next, the undercoat which is an ultraviolet curable paint was semi-dried using a ultraviolet lamp weakly. When applied several times, the gel was gelled using an ultraviolet lamp in between. The UV lamp used a 80 watt / cm mercury lamp and used one or several lamps simultaneously, depending on the passage speed of the substrate.

(Middle Layer Formation)

The intermediate | middle which is the ultraviolet curable paint of the following composition was apply | coated once or several times on the said undercoat layer using reverse roll lacotta.

335 parts by weight of polyester resin;

500 parts by weight of epoxy acrylate resin (manufactured by itself);

35 parts by weight of trimethylol prophane triacrylate (TMPTA) as a polyfunctional acrylate monomer;

10 parts by weight of EFKA 2720 (manufactured by EFKA, Netherlands) as an antifoaming agent;

50 parts by weight of BK-6 (manufactured by Miwon Corporation) as a photoinitiator;

30 parts by weight of Zn-STEARATE as an abrasive;

30 parts by weight of talc powder (TALC POWDER; 325 mesh tradition) as an abrasive; And

10 parts by weight of EFKA 3883 (manufactured by EFKA, Netherlands) as a leveling agent.

Next, the intermediate | middle paint which is the applied ultraviolet curable paint was semi-dried using the ultraviolet lamp weakly. When applied several times, gelation was carried out using an ultraviolet lamp in between. UV lamps used mercury lamps with a capacity of 80-120 watts / cm and used one or several lamps simultaneously, depending on the passage speed of the substrate.

In addition, in order to further improve the quality of the top coat, the UV lamp was strongly used to completely cure the middle layer, the undercoat layer, the print layer and the base color layer, and then finely polished using # 320 abrasive paper.

(Top Layer Formation)

The coating composition of the following composition was apply | coated several times on the said intermediate | middle layer using the top coat roll lacotta. Drying of the top coat completely hardens all of the applied midway, bottom coat, printed layer, base color layer and top coat by using an ultraviolet lamp strongly. The ultraviolet lamp used a mercury lamp with a capacity of 80 to 120 watt / cm, and simultaneously used one or several lamps depending on the passage speed of the substrate.

640 parts by weight of polyester resin;

100 parts by weight of epoxy acrylate resin (manufactured by itself);

30 parts by weight of 2-hydroxy ethyl acrylate as a monofunctional acrylate monomer;

35 parts by weight of OK-412 (manufactured by DEGUSSA, Germany) as a matting agent;

10 parts by weight of polyethylene wax as wax;

55 parts by weight of methyl ethyl ketone (MEK) as a solvent;

15 parts by weight of xylene (XYLENE) as a solvent;

45 parts by weight of isopropyl alcohol as a solvent;

8 parts by weight of BK-6 (manufactured by Miwon Corporation) as a photoinitiator;

22 parts by weight of DAROCURE 1173 (manufactured by CIBAGEIGY, Switzerland) as a photoinitiator;

10 parts by weight of EFKA 3883 (manufactured by EFKA, Netherlands) as a leveling agent; And

30 parts by weight of alumina ceramic powder (400 mesh traditional).

1 is a cross-sectional view showing each coating layer formed as described above.

The printed floorboard manufactured as described above can implement vivid patterns on plywood, which is a low-grade material, and has excellent adhesion between layers and wear resistance by using UV-curable resins from the lower layer to the uppermost layer.

The printed floorboard of the present invention is a floorboard having a high-quality texture by forming various colors and vivid patterns by forming a UV-curable printing layer on a low-grade wood material such as plywood, and having excellent adhesion and wear resistance between layers.

Claims (10)

Printed wood floorboards, From below a) wood substrate; b) a UV curable putty layer; c) a UV curable base color layer; d) a UV curable printed layer; e) UV curable undercoat; f) a UV curable middle layer; And g) UV curable top coat Wood floorboards, including. The method of claim 1, UV curable putty layer of b) 340 to 460 parts by weight of polyurethane or epoxy acrylate resin; 300 to 400 parts by weight of a bifunctional acrylate monomer; 140 to 190 parts by weight of a multifunctional acrylate monomer; 43 to 57 parts by weight of a thickener; 26 to 34 parts by weight of the photoinitiator; And 4 to 6 parts by weight of antifoam Printed wooden floorboards formed by coating a UV curable putty paint comprising a coating on the wood laminated substrate and UV-cured. The method of claim 1, UV curable base color layer of c) 470 to 630 parts by weight of polyurethane or epoxy acrylate resin; 43 to 57 parts by weight of monofunctional acrylate monomer; 64 to 86 parts by weight of the bifunctional acrylate monomer; 64 to 86 parts by weight of the multifunctional acrylate monomer; Solvent 68 to 92 parts by weight; 17 to 23 parts by weight thickener; 85 to 115 parts by weight of pigment; 21 to 29 parts by weight of photoinitiator; And Defoamer 21 to 29 parts by weight Printed wooden floorboards formed by coating a UV curable base color paint comprising a putty layer on the UV cured. The method of claim 1, UV curable printing layer of d) 85 to 115 parts by weight of pigment; 119 to 161 parts by weight of epoxy acrylate resin; 300 to 400 parts by weight of a bifunctional acrylate monomer; 290 to 390 parts by weight of a multifunctional acrylate monomer; 34 to 46 parts by weight of photoinitiator; 0.85 to 1.15 parts by weight of a polymerization inhibitor; 14 to 20 parts by weight of reaction accelerator; And 8.5 to 11.5 parts by weight of wax Printed wooden floorboards are formed by applying a printing ink comprising a on the base color layer, and irradiated with ultraviolet rays. The method of claim 1, UV curable undercoat of e) 255 to 345 parts by weight of polyurethane or polyester acrylate resin; 470 to 630 parts by weight of epoxy acrylate resin; 47 to 63 parts by weight of a multifunctional acrylate monomer; Antifoam 8.5-11.5 parts by weight; And 30 to 40 parts by weight of photoinitiator Printed wooden floorboards are formed by applying a UV-curable undercoat comprising a coating on the printing layer, and irradiated with ultraviolet rays. The method of claim 5, Printed wooden floorboards, wherein the UV curable undercoat further comprises 30 to 70 parts by weight of ceramic powder. The method of claim 1, UV curable intermediate layer of f) 285 to 385 parts by weight of polyester resin; 425 to 575 parts by weight of epoxy acrylate resin; 30 to 40 parts by weight of the polyfunctional acrylate monomer; Antifoam 8.5-11.5 parts by weight; 43 to 57 parts by weight of photoinitiator; 51 to 69 parts by weight of an abrasive; And Smoothing agent 8.5 to 11.5 parts by weight Printed wooden floorboards are formed by applying a UV curable intermediate coating comprising a coating on the undercoat layer, and irradiated with ultraviolet rays. The method of claim 1, UV curable top coat layer of g) 540 to 740 parts by weight of polyurethane or polyester acrylate resin; 85 to 115 parts by weight of epoxy acrylate resin; 25 to 35 parts by weight of monofunctional acrylate monomer; 30 to 40 parts by weight of a matting agent; 8 to 12 parts by weight of wax; Solvent 95 to 135 parts by weight; 25 to 35 parts by weight of photoinitiator; And Smoothing agent 8.5 to 11.5 parts by weight Printed wooden floorboards are formed by applying a UV curable top coat comprising a coating on the intermediate layer and irradiated with ultraviolet rays. The method of claim 8, Printed wooden floorboards, wherein the UV-curable top coat further comprises 25 to 35 parts by weight of ceramic powder. The method of claim 1, A) the thickness of the wood chipboard is 6 to 15 mm, B) the thickness of the putty layer is 40 to 60 ㎛, The thickness of the UV curable base color layer of c) is 15 to 20 ㎛, The thickness of the UV curable printing layer of d) is 10 to 15 ㎛, The thickness of the UV curable undercoat layer of e) is 50 to 80 ㎛, The thickness of the UV curable intermediate layer of f) is 50 to 80 ㎛, The thickness of the UV curable top coat layer of g) is 10 to 20 ㎛ Printed wooden floorboards.