KR20090038118A - Interior flooring using paper and synthetic resin layer - Google Patents

Abstract

An interior flooring member is provided to improve the surface strength of the flooring member and to improve the decorative effect by using various colors of papers. An interior flooring member is composed of a base material layer(10), a printed surface layer(20), and a coated surface layer(21). The printed surface layer is composed of a paper layer(25) of 180~300g/m^2, a synthetic resin layer(24), and a printed pattern layer(23).

Description

Interior flooring using paper and synthetic resin layer

The present invention relates to an interior flooring material using a synthetic resin layer printed in various patterns and a paper layer of various colors. The paper layer and the printed synthetic resin layer are laminated, integrated at a constant temperature and pressure, and then appropriately configured on the upper substrate layer. By this it is possible to implement a variety of image effects, and relates to a flooring material excellent in physical properties such as pressing, stamping, scratching.

As shown in the cross-sectional view of FIG. 1, the conventional natural veneer laminated plywood onboard floorboard is formed by coating only the UV coating on the surface of the natural veneer 22 to form a general surface coating layer 21, or the veneer layer Only resin impregnation had a structure laminated with the water-resistant plywood layer 10 'with the adhesive bond layer 30 interposed therebetween.

In the case of such a conventional ondol floorboard, the purpose of maximizing the natural texture, but has a problem that the natural veneer 22 is pressed, stamped or scratched by the limitation of the physical properties.

As another conventional flooring material, melamine decorative plate reinforced floor (LPM floor) has strong surface properties against crushing, chipping, and scratching due to the impregnation of melamine resin, but paper containing titanium dioxide (TiO ₂ ) to maximize the degree of resin impregnation. Because of the use, the printability against the impregnation performance is inferior and there is a disadvantage that it is difficult to implement a natural texture (Reality) such as natural veneer.

Korean Patent Registration No. 258600 discloses a vinyl chloride flooring material in which a melamine sheet is laminated on top of a vinyl chloride sheet layer, but the present invention and the type and detail configuration of the flooring material are different.

Korean Patent Registration No. 451482 discloses a flooring material in which a phenolic composite resin is impregnated with paper, and a dry prepreg is thermocompression-molded on the upper surface of a PVC base or a water-resistant plywood layer to form a transparent protective layer and a shape layer. The detail configuration of the surface layer is different.

Korean Patent Laid-Open Publication No. 2006-5011 discloses a Hanji floor board in which an adhesive layer, an impregnated Hanji layer and a shape paper layer, and a urethane UV coating layer are sequentially stacked on a water-resistant plywood, but the detailed structure of the surface layer differs from the present invention. Do.

It is an object of the present invention to provide a flooring material having improved interior effects and surface properties.

In order to achieve the above object, the present invention provides an interior floor covering comprising a printing surface layer having a paper layer and a synthetic resin printing layer.

The flooring material of the present invention includes a base layer, an adhesive layer, a printed surface layer and a surface coating layer from below, and the printing surface layer is composed of a paper layer, a synthetic resin layer and a printed pattern layer from below.

In the present invention, the base layer is made of wood-based boards, such as water-resistant plywood, strand board, particle board (PB), MDF (Medium Density Fiberboard), HDF (High Density Fiberboard), WFPC (Wood Fiber Plastic Composite), By using grooves in the grooves, dimensional stability and gap opening can be improved.

In the present invention, the adhesive layer may use a thermosetting melamine resin, a thermosetting or room temperature urethane or epoxy resin, polyvinyl alcohol, polyvinylacetate, or the like, and a room temperature curing resin is preferable.

In the present invention, the basis weight of the paper used for the paper layer is preferably 180 to 300 g / ㎡ in consideration of surface strength improvement and weight problems. The paper layer is paper processed in various colors, and the paper is urea resin, urea melamine resin, melamine resin, phenol resin, acryl resin, polyester resin, unsaturated polyester resin, epoxy resin, polyvinyl acetate resin, polyvinyl alcohol It can be impregnated with one or more resins selected from resins and urethane resins, and the impregnated resin is impregnated with 40 to 50% by weight of paper, and then dried and semi-cured in an oven at 80 to 150 ° C. for 0.5 to 3 minutes. It is preferable to use it, and several sheets of paper may be used for higher surface strength.

In the present invention, the synthetic resin layer is preferably transparent in consideration of printing minimization. Synthetic resins include Poly Vinyl Chloride (PVC), Ploy Ethylene (PE), Poly Propylene (PP), Ploy Ethylene Terephthalate (PET), Ploy Ethylene Terephthalate Glycolmodified (PETG), High Impact Polystyrene (HIPS), and Acrylonitrile Butadiene Styrene (ABS). Polyurethane (PU), Styrene Butadiene Styrene Block Copolymer (SBS), Styrene Ethylene Butadiene Styrene Block Copolymer (SEBS), Syndiotactic Poly Stylene (SPS), Styrene Ethylene Propylene Styrene Block Copolymer (SEPS), and the like are preferably used.

Particularly preferred resins are PVC, PETG, and in the case of PVC can cause environmental pollution using a plasticizer, it is preferable to use PETG in consideration of environmentally friendly aspects.

In the present invention, the printed pattern layer is printed on the synthetic resin layer using an organic or inorganic dye, or pigment, in order to realize various pattern printing on the synthetic resin, after processing the synthetic resin on the sheet gravure using a dye or pigment By printing, patterning can be pursued.

In order to improve the surface properties in the present invention, the printed surface layer is preferably composed of a single surface material by integrating the paper layer, the synthetic resin layer, and the printed pattern layer from the bottom by consolidation by high pressure press, thereby maintaining high strength. Can be.

In the present invention, the surface coating layer is composed of a surface primer layer, a lower coat layer, a middle coat layer and a top coat layer, and a monomer and oligomer having a relatively low molecular weight are used as the primer layer, and ceramics and glass chops are used in the lower coat to the top coat layer. ), Clay, silica, and the like are added to improve surface properties such as scratch resistance, thereby preventing surface damage such as chipping, cracking, and scratching by heavy or sharp objects.

The flooring material of the present invention finally has a connection structure by means of T & G (Tongue and Groove), click system, or connector to be mutually coupled.

The wood flooring material of the present invention can compensate for the shortcomings of the lack of natural texture reality of melamine decorative board reinforced floor by minimizing printing on the synthetic resin layer by the integration technology of the patterned synthetic resin layer and the paper layer having various colors. As a result, various colors of paper can give an interior effect.

In addition, it provides an excellent quality for the surface properties such as pressing, stamping, scratching which is the biggest disadvantage when using the plywood flooring material.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view of the floor covering according to the present invention, comprising a base layer 10, an adhesive layer 30, a printed surface layer 20, a surface coating layer 21 grooved on the back surface from below, and a printed surface layer Is composed of a paper layer 25, a synthetic resin layer 24 and a printed pattern layer 23 from below.

The base layer 10 is made of a wood-based board such as a plywood board, a strand board, PB, MDF, HDF, WFPC, etc., by using a grooved on the back side thereof, it is possible to improve the dimensional stability and gaps.

The adhesive constituting the adhesive layer 30 may use a thermosetting melamine resin, a thermosetting or room temperature urethane or epoxy resin, polyvinyl alcohol, polyvinylacetate, or the like, and a room temperature curing resin is preferable.

The paper layer 25 is paper processed in various colors, and the paper is urea resin, urea melamine resin, melamine resin, phenol resin, acrylic resin, polyester resin, unsaturated polyester resin, epoxy resin, polyvinyl acetate resin, poly Impregnated with at least one resin selected from vinyl alcohol resin and urethane resin, impregnated with impregnated resin 40 to 50% by weight based on the weight of the paper, and then dried and semi-cured in an oven at 80 to 150 ℃ for 0.5 to 3 minutes It is preferable to manufacture and use it, and several sheets of paper may be used for higher surface strength.

As for the basis weight of the paper used for the paper layer 25, 180-300 g / m <2> is suitable. If the basis weight of the paper is less than 180 g / ㎡ it can not pursue excellent surface strength improvement, if the basis weight of the paper exceeds 300 g / ㎡ it is difficult to use because the weight of the paper is too heavy.

Synthetic resin layer 24 is composed of a synthetic resin sheet, the synthetic resin used here may be PVC, PE, PP, PET, PETG, HIPS, ABS, PU, SBS, SEBS, SPS, SEPS and the like.

It is preferable that the synthetic resin layer 24 is transparent, and when printing wood grain, marble, mosaic, etc. on the synthetic resin layer 24, printing can be minimized by using the ground color of the paper layer 25.

The printed pattern layer 23 is printed on the synthetic resin layer 24 using an organic or inorganic dye or pigment. In order to realize various pattern printing on the synthetic resin, the synthetic resin 24 is processed into a sheet and then dyed. Alternatively, a pattern may be pursued by gravure printing using a pigment.

The printed surface layer 20 is preferably composed of one surface material by integrating the paper layer 25, the synthetic resin layer 24, and the printed pattern layer 23 from the bottom by consolidation by high pressure press. After lamination, the substrate was heated and pressurized at a pressure of 20 to 200 kg / cm 2 at a temperature of 110 to 180 ° C. for 15 to 30 minutes, and then cooled under the same pressure for 15 to 30 minutes, and then the printed surface layer 20 To complete).

The surface coating layer 21 is finished by the ultraviolet surface coating treatment on the printed pattern layer 20, the surface coating layer is generally composed of a surface primer layer, a lower layer, a middle layer and a top coat layer from below.

The primer layer is formed by ultraviolet curing of relatively low molecular weight monomers and oligomers (e.g., aqueous acrylics having a molecular weight of 100,000 to 200,000) in order to increase the impact resistance and tack resistance of the surface. desirable.

In order to increase the surface properties, an inorganic material such as glass chop may be added to the undercoat and the intermediate layer, and the amount is preferably 0.1 to 10% by weight.

Nanoinorganic materials, silica, etc. may be added to the top coat layer in order to increase scratch resistance and abrasion resistance of the surface, and the amount is preferably 0.1 to 10% by weight.

EXAMPLE

Laminating a synthetic resin layer 24 on which the printed pattern layer 23 was printed by gravure printing on the paper layer 25 and then integrating by thermal pressure to form a printed surface layer 20, and then waterproofing as the substrate layer 10. After applying the adhesive layer 30 on the plywood and then laminated and bonded the printed surface layer 20, by forming a surface coating layer 21 thereon, cutting and shape processing in the form of T & G, as shown in Figure 2 The flooring material which has the base material layer 10, the adhesive bond layer 30, the printed surface layer 20, and the surface coating layer 21 from the below was manufactured.

Specifically, the paper layer 25 was used by impregnating a white paper having a basis weight of 180 to 300 g / ㎡ 43% by weight with melamine or phenol resin, and then dried and semi-cured in an 80 to 150 ℃ oven for 0.5 to 3 minutes. Synthetic resin layer 24 was used to form a PETG on a 0.1 to 0.2 mm sheet, and then formed a printed pattern layer 23 of wood grain through gravure printing. After laminating the synthetic resin layer 24 having the paper layer 25 and the printed pattern layer 23, and heated and pressurized for 15 to 30 minutes at a pressure of 20 to 200 kg / ㎠ at a temperature of 110 to 180 ℃ in a press Subsequently, under the same pressure, the printed surface layer 20 was formed by simultaneously cooling and integrating for 30 minutes.

As the water-resistant plywood used as the substrate layer 10, a water-resistant plywood having a density of 0.6 g / cm 3 or more, a water content of 8.0 to 10.0%, and a thickness of 7.0 to 7.5 mm was used. In the case of thermosetting melamine resin, the coating amount is applied at 150 g / m 2 to form an adhesive layer 30, and in the case of thermosetting or room temperature urethane or epoxy resin, the coating amount is coated at 130 g / m 2. After the adhesive layer 30 was formed, the printed surface layer 20 was laminated thereon, and the thermosetting type was cured after hot pressing for 2 to 3 minutes at a pressure of 10 to 15 kgf / cm 2. Adhesion was carried out by pressing for 15 days at a pressure of 15 kgf / cm 2.

The surface coating layer 21 was formed on the printed surface layer 20 in the order of the surface primer layer, the undercoat layer and the intermediate layer, and 5 wt% of ceramic was added to the undercoat layer. After cutting using a tenoner to have a width of 85 to 95 mm and a length of 850 to 950 mm, T & G processing was performed on the side, and finally, a finished layer was coated by coating a top coat layer containing 5% by weight of nano-inorganic materials. .

[Comparative Example]

As shown in Fig. 1, the plywood floor is laminated with a natural veneer 22 with an adhesive layer 30 on top of the water-resistant plywood 10 'and treated with UV curing surface coating 21.

[Test Example]

The physical properties of the flooring materials of Examples and Comparative Examples were compared, and the results are shown in Table 1.

division Photographing Fragility Dimensional stability,% Scratch resistance Absorption Thickness Expansion Rate heating Immersion U type M type L W L W Example 40 cm 60 cm -0.14 -0.16 0.05 0.18 5.5 N 1.9% 4.7% Comparative example 10 cm 15 cm -0.15 -0.18 0.05 0.19 1.5 N 2.0% 5%

Surface testability of the test items in Table 1 is a measure of the drop height at which the surface damage occurs when a flat-blade screwdriver weighing 110 g falls freely on the surface of the floor covering (45 degrees horizontal). According to the measurement results of Table 1, in the case of the conventional plywood ondol floor (comparative example), when the flat-headed driver falls freely at the height of 10 cm, a mark is generated on the surface, whereas the flooring material of the present invention (example) is 40 cm Markings occurred at height.

The surface cracking property of the test item of Table 1 measured the fall height at which the surface is broken when freely dropping the iron hole of diameter 3cm and the weight of 286g perpendicular to the surface of the flooring material to be measured. According to the measurement results of Table 1, in the case of conventional plywood ondol floor (comparative example), the surface cracks occurred from 15 cm height when freely falling the iron balls, respectively, whereas the flooring material (example) of the present invention is 60 cm high. Surface cracking occurred from the drop of the iron ball at.

The dimensional stability of the test items in Table 1 is to measure the dimensional change rate of the length (L) and width (W) after leaving the flooring material to be measured in an 80 ℃ heating oven and a water bath for 24 hours. According to the measurement results of Table 1, the dimensional stability of the flooring material (example) of the present invention appeared to be similar to the conventional plywood ondol floor (comparative example).

The scratch resistance of the test items in Table 1 was measured by the method of Clause 3.15 of KS M3332 using a Clemens type scratch hardness tester. According to the measurement results of Table 1, the scratch resistance (5.5 N) of the floor covering material (example) of the present invention was superior to the conventional plywood ondol floor (1.5 N).

Absorption thickness expansion rate in the test items of Table 1 was measured for 24 hours (type U, type 6.9 of KS F3200), and for 2 hours (type M) in 70 ℃ hot water to measure the thickness change rate. According to the measurement result of Table 1, the absorption thickness expansion rate of the flooring material (example) of the present invention appeared similar to the conventional plywood ondol floor (comparative example).

Warp (bending) stability was compared with respect to the flooring material of Examples and Comparative Examples, the results are shown in Table 2.

division Warp stability W (width), mm L (length), mm Example 0.17 1.25 Comparative example 0.18 1.30

Warp stability in Table 2 is a measure of curl and dome values after the samples were placed in an 80 ± 2 ° C. oven for 24 hours. As a result of the measurement, warp stability of the flooring material (example) of the present invention and the conventional plywood ondol floor (comparative example) were similar in the width direction and the longitudinal direction.

Inferred from the above test results, the flooring material of the present invention has excellent surface properties compared to conventional plywood ondol floors for the surface chipping or damage caused by heavy or sharp objects, and the dimensional stability and warp stability are on the level of conventional ondol floors. Physical properties were equivalent to.

1 is a cross-sectional view of a conventional domestic plywood ondol floor.

2 is a cross-sectional view of the floor covering according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: base material layer

10´: waterproofing plywood layer

20: printing surface layer

21: surface coating layer

22: natural veneer

23: printed pattern layer

24: synthetic resin layer

25: paper layer

30: adhesive layer

Claims (10)

It includes a base material layer, a print surface layer, a surface coating layer from the bottom, A flooring material comprising a printed surface layer consisting of a paper layer, a synthetic resin layer and a printed pattern layer from below. The floor covering according to claim 1, wherein the basis weight of the paper used in the paper layer is 180 to 300 g / m 2. The method of claim 1, wherein the paper layer is selected from among urea resins, urea melamine resins, melamine resins, phenol resins, acrylic resins, polyester resins, unsaturated polyester resins, epoxy resins, polyvinyl acetate resins, polyvinyl alcohol resins, urethane resins. Flooring material characterized by impregnating paper with at least one resin selected. The flooring material according to claim 1, wherein the printed pattern layer is a layer printed by gravure printing on the synthetic resin layer. The method of claim 1, wherein the synthetic resin layer is poly vinyl chloride (PVC), Ploy Ethylene (PE), Ploy Ethylene Terephthalate (PET), Ploy Ethylene Terephthalate Glycolmodified (PETG), High Impact Polystyrene (HIPS), Acrylonitrile Butadiene Styrene (ABS). Polyurethane (PU), Styrene Butadiene Styrene Block Copolymer (SBS), Styrene Ethylene Butadiene Styrene Block Copolymer (SEBS), Syndiotactic Poly Stylene (SPS), Styrene Ethylene Propylene Styrene Block Copolymer (SEPS) Flooring material, characterized in that made. The flooring material according to claim 1, wherein the synthetic resin layer is transparent. The flooring material according to claim 1, wherein the printed surface layer is formed by consolidating a paper layer, a synthetic resin layer, and a printed pattern layer from the bottom by a compaction operation by a high pressure press. The method of claim 1, wherein the substrate layer is made of one or more wood-based boards selected from a water resistant plywood, strand board, particleboard, medium density fiberboard (MDF), high density fiberboard (HDF), wood fiber plastic composite (WFPC) Flooring material characterized in that. The method according to claim 1, wherein the surface coating layer comprises a bottom coat layer, a middle coat layer and a top coat layer from below, and the bottom coat layer to the top coat layer are at least one inorganic material selected from ceramic, glass chop, clay, and silica. Flooring material characterized in that it comprises. The flooring material according to claim 1, wherein the flooring material has a connection structure by a Tongue and Groove (T & G), a click system, or a connector.

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