KR20170095074A - Wooden floor materials with backside groove - Google Patents

Wooden floor materials with backside groove Download PDF

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Publication number
KR20170095074A
KR20170095074A KR1020160016604A KR20160016604A KR20170095074A KR 20170095074 A KR20170095074 A KR 20170095074A KR 1020160016604 A KR1020160016604 A KR 1020160016604A KR 20160016604 A KR20160016604 A KR 20160016604A KR 20170095074 A KR20170095074 A KR 20170095074A
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KR
South Korea
Prior art keywords
wood
layer
flooring
groove portion
grooves
Prior art date
Application number
KR1020160016604A
Other languages
Korean (ko)
Inventor
손달호
Original Assignee
(주)경동월드와이드
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Publication date
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Priority to KR1020160016604A priority Critical patent/KR20170095074A/en
Publication of KR20170095074A publication Critical patent/KR20170095074A/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/02038—Flooring or floor layers composed of a number of similar elements characterised by tongue and groove connections between neighbouring flooring elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E04F15/102—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials of fibrous or chipped materials, e.g. bonded with synthetic resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2471/00—Floor coverings

Abstract

The present invention relates to a wooden floor material and, more specifically, relates to a wooden floor material formed with a groove portion on a backside of a base material layer in which the base material layer is composed of natural timber, shaped timber, or a composite material of timber and plastic; and a surface pattern layer stacked on the base material layer. According to the present invention, the wooden floor material has improved stability of size by buffering deformation such as bending or twisting of synthetic timber expanded by heat, and the groove portion formed on a backside of the base material layer. In addition, by having a larger area where heat conducted from a bottom is conducted or having a greater area attached to the bottom by an adhesive, heat conduction and adhesiveness are able to be improved when compared to a conventional wooden floor material. As such, the wooden floor material of the present invention is able to be useful as an environmentally friendly material constructed on an indoor wooden floor.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a flooring material,

The present invention relates to a flooring material, and more particularly, to a flooring material improved in dimensional stability, adhesiveness and thermal conductivity as compared with conventional flooring materials.

Natural timber is mainly used as an exterior or interior material for a building such as a floorboard, a ceiling board, a door, a door frame, a window, a fence and the like due to an increase in consumer's preference for wood and improvement in aesthetics due to natural texture. However, due to the inherent physical properties of wood, which is easily deformed due to external temperature change, humidity, shock, etc., the exterior material of the building using such natural wood has a problem of deforestation caused by the cutting of wood, There is a problem that it is difficult to be used and that the antimicrobial activity is low so that the service life is shortened,

In order to solve such a problem, there is a method in which a piece of natural wood or a fibrous material is pressed into a plate shape by pressing with an adhesive, or a laminated natural wood is pressed together with an adhesive, Instead of using natural wood as it is, it has been used to make processed wood. However, such processed wood has also been unsuitable as an environmentally friendly material, such as volatile organic compounds, which are known to be harmful to human bodies such as formaldehyde.

Recently, a synthetic wood (also referred to as "Wood-Plastic Composite (WPC)") produced by mixing natural wood and synthetic resin followed by injection or extrusion has appeared, And it has attracted attention as a substitute for natural wood as the interior material of a building due to its low cost and appearance. These synthetic timbers combine the advantages of natural wood with the advantages of synthetic resins by reducing the amount of natural wood added and adding synthetic resins. As a result, the disadvantages of conventional natural wood such as moisture resistance, heat resistance and strength are compensated, and volatile organic compounds harmful to the human body are hardly released, and after the use, they can be collected and recycled through a process such as grinding It is also suitable as an environmentally friendly material.

The inventors of the present invention have found that when the flooring material is manufactured from synthetic wood and the indoor floor floor is constructed using the synthetic flooring material based on the advantages of the synthetic wood, It has been confirmed that a problem arises such that the synthetic resin mixed therein expands and the product bends or twists, that is, the dimensional stability is lowered due to heat.

Accordingly, the inventors of the present invention have recognized the necessity of development of a flooring material having excellent dimensional stability against heat while maintaining the advantages of the synthetic wood as described above, and have come up with the present invention.

Korean Patent No. 10-0679815

As mentioned above, one object of the present invention is to provide a flooring having excellent dimensional stability against heat while maintaining the advantages of synthetic wood.

Another object of the present invention is to provide a flooring material excellent in dimensional stability and excellent in thermal conductivity as described above.

Still another object of the present invention is to provide a flooring material which is excellent not only in the thermal conductivity as described above but also in adhesiveness to the floor to be applied.

In order to achieve the above object, the present invention provides a flooring material in which a surface pattern layer is laminated on a base layer made of natural wood, processed wood or a wood-plastic composite material, and a groove is formed on a back surface of the base layer do.

And the groove portion formed on the back surface of the substrate layer is formed so that the first groove portion formed in the longitudinal direction of the flooring material and the second groove portion formed in the width direction of the flooring material are mutually orthogonal.

Wherein the first groove portion has a plurality of grooves at an interval of 1 to 5 mm, the second groove portion has a plurality of grooves at an interval of 20 to 50 mm, and the grooves constituting the first groove portion and the second groove portion are all formed of 1 (W) of 5 to 5 mm and a depth of 20 to 50% of the thickness of the base layer.

In the flooring of the present invention, due to the grooves formed on the back surface of the substrate layer, deformation such as warping or distortion of the synthetic wood expanded due to heat is buffered to improve dimensional stability and also the area where heat transmitted from the floor is conducted, The thermal conductivity and adhesiveness can be improved as compared with the conventional flooring floor material. Therefore, the flooring material of the present invention can be usefully used as an environmentally friendly material applied to the floor of a room.

However, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is an exploded perspective view of a flooring according to an embodiment of the present invention.
2 is a longitudinal cross-sectional view of a flooring according to an embodiment of the present invention.
3A is a plan view showing a back surface of a substrate layer 40 of a flooring material of the present invention and a groove portion 50 (first groove portion 51 and second groove portion 53) formed on the back surface thereof, And a groove 50 formed on the back surface of the layer 40. As shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein, but may include other equivalents or alternatives. In the drawings, the thicknesses of layers and regions are exaggerated for clarity. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. something to do.

1 and 2 are an exploded perspective view of a flooring material according to an embodiment of the present invention and a cross-sectional view of the flooring material cut in the longitudinal direction, respectively.

1 and 2, a flooring according to the present invention includes a surface layer 20 laminated on a base material layer 40 and a groove 50 formed on a back surface of the base material layer 40 do.

The base layer 40 serves as a support for the flooring according to the present invention and may have a thickness of 3 to 25 mm, preferably 3 to 25 mm. The base layer 40 may be made of natural wood, processed wood or wood-plastic composite material, and the processed wood may be veneer, plywood, laminated wood, MDF, Is preferably made of a wood-plastic composite material.

The wood-plastic composite material is made of wood powder, a plastic resin and a crosslinking agent. In particular, the raw materials can be homogeneously mixed and compounded with an extruder at a high temperature to melt the plastic resin and the cross-linking agent to coat and bind the wood powder, and then to mold them into a flooring.

In the wood-plastic composite material, the wood powder derived from natural wood of any kind can be used, and it is preferable that the moisture content is 7% or less, and the particles of the wood powder have an average particle diameter of 0.1 to 3.0 mm, Or less is 10% or less and 1.0 mm or more is 10% or less. The plastic resin is preferably one or more selected from the group consisting of polyethylene (PE), polypropylene (PP), and polystyrene (PS), but is not limited thereto. In addition, the crosslinking agent is preferably a coupling agent having a maleic anhydride content of about 3% or more, but is not limited thereto.

In the wood-plastic composite material, the wood and the plastic resin are contained in a weight ratio of 60 to 85:15 to 40, preferably 70 to 80:20 to 30, and more preferably 73 to 77: 23 to 27, , The crosslinking agent is included in an amount of 1 to 5 parts by weight, preferably 2 to 4 parts by weight, based on 100 parts by weight of the mixture of the wood and the plastic resin.

3A and 3B are plan views showing the back surface of the base layer 40. FIG.

Referring to FIGS. 3A and 3B, a groove 50 is formed on the back surface of the base layer 40.

The groove portion 50 is formed such that a first groove portion 51 formed in the longitudinal direction of the flooring material and a second groove portion 53 formed in the width direction of the flooring material are orthogonal to each other.

The first groove 51 has a plurality of grooves formed at an interval F of 1 to 5 mm and the second grooves 53 has a plurality of grooves formed at an interval F of 20 to 50 mm.

The grooves constituting the first groove portion 51 and the second groove portion 53 may all have a width W of 1 to 10 mm, preferably 1 to 5 mm, more preferably 3 to 5 mm, (D) may be 20 to 50% of the thickness of the base layer (40).

The grooves 50 serve to buffer deformation such as warpage or distortion of the expanded wood-plastic composite material due to the heat applied from the floor, but also to an area where the heat transmitted from the floor is conducted, It enlarges the area and improves the thermal conductivity and adhesion.

A surface pattern layer 20 is formed on the base layer 40.

The surface layer layer 20 protects the surface of the base layer 40 and imparts an aesthetic effect to the flooring material according to the present invention. The high-pressure melamine (HPM), the low pressure melamine , LPM) or vignetting (0.4 to 3T) can be used.

When a melamine sheet (HPM or LPM) composed of a print layer having a thickness of 0.4 to 0.7 mm and a melamine-impregnated overlay sheet is used as the surface pattern layer 20, the problem of discoloration due to ultraviolet rays is improved, And scratch resistance and impact resistance can be improved.

When the veneer is used as the surface pattern layer 20, it is used for expressing natural texture and design. Any suitable species can be used. In general, the wood block is sliced and used, and 0.3 to 0.7 mm is used .

The surface pattern layer 20 may be formed on the base layer 40 through an adhesive layer 30 which may be an epoxy or polyurethane based paint or a polyisocyanate Based resin, and ethylene-vinyl acetate-based resin.

A wood core layer (not shown) may optionally be interposed between the substrate layer 40 and the surface pattern layer 20. The wood core layer may be made of processed wood, Veneer plywood or fiberboard.

The coating layer 10 may be formed on the surface pattern layer 20, for example, by UV coating the surface for the purpose of improving discoloration and increasing abrasion resistance.

In the flooring according to the present invention, a tongue and groove (T & G) coupling structure having a protruding portion on one side in the longitudinal direction and a groove for fitting a protruding portion on the other side may be formed, It is the same. In addition, a click system or a connection structure by a connector may be formed.

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

However, the following examples illustrate the present invention in detail, and the present invention is not limited by the following examples.

Production of flooring material having grooves formed on the back surface of the substrate layer

HPM having a thickness of 0.4 mm having a coating layer formed on its surface was laminated on a base layer having a thickness of 5.6 mm made of the same material as shown in Table 1 below. The back surface of the base layer had a width (W) of 1 to 5 mm and a A plurality of grooves having a depth D of 3 mm are formed at intervals of 1 to 5 mm and 20 to 50 mm in the longitudinal direction and in the width direction respectively and are formed at an interval of 800 mm in the longitudinal direction and 95 mm in the width direction The flooring of Examples 1 and 2 was prepared.

In order to confirm the effect of the grooves formed on the back surface of the substrate layer as described above, the flooring materials of Comparative Examples 1 and 2, which are the same as those of the flooring materials of Examples 1 and 2, .

The material of the base layer On the back surface of the substrate layer, Example Flooring Flooring 1 Plywood ○ Example Flooring 2 Wood-plastic composites ○ Comparative Example Flooring 1 Plywood × Comparative Example Flooring 2 Wood-plastic composites ×

Confirming the effect of flooring with grooves on the back of the base layer

Using the four kinds of flooring materials of the examples and the flooring materials of the comparative examples prepared in Example 1, the products were adhered to a concrete model of a predetermined size with an adhesive for ondol flooring according to a conventional ondol flooring method, and after 72 hours And the adhesive was cured sufficiently to complete the construction of the ondol floor.

The above-mentioned ondol floor was subjected to i) heating at a temperature of 80 ° C for 24 hours, and the shrinkage or expansion of the floor was measured to calculate the percent change in percentage, and ii) (Iii) The concrete model was heated to 60 ℃, and the time taken for the temperature of the floor to rise to 50 ℃ was measured to confirm the thermal conductivity (Table 2). In addition, iv) the concrete model was heated to 60 ° C and then the temperature change of the flooring was measured according to the passage of time (Table 3).

Dimensional change ratio (%) Adhesion (%) Thermal Conductivity (s) Example Flooring Flooring 1 -0.01 to -0.03 148 530 Example Flooring 2 0.01 to 0.03 152 370 Comparative Example Flooring 1 -0.05 ~ -0.10 100 660 Comparative Example Flooring 2 0.06 to 0.09 100 540

start
Temperature One
minute 2
minute 3
minute 4
minute 5
minute 6
minute 7
minute 8
minute 9
minute 10
minute 11
minute 12
minute 13
minute Example
Flooring
One
19.5

25

33.5

37.3

41

43.8

45.9

47.8

49.3

50.7

51.5

52.3

53

53.1
Example
Flooring
2
19.5

27

36.7

41

44.6

47.1

49.2

51

52

53.2

53.8

54.7

55.3

55.4
Comparative Example
Flooring
One
19.5

21

24

28.8

33.1

37

40.6

43.7

45.6

47.2

48.8

49.7

49.9

49.9
Comparative Example
Flooring
2
19.5

21.5

28.3

35.1

39.8

43.2

45.1

46.8

48.6

50

50.8

51.5

52.1

52.1

The results are shown in Table 2. In the case of the example flooring materials 1 and 2 in which the grooves were formed on the back surface of the substrate layer, the dimensional stability of the flooring material, the comparative example in which both the adhesive property and the thermal conductivity were not formed, It can be seen that it is remarkably improved compared with the flooring materials 1 and 2.

In the case of the dimensional stability, the dimensional change due to the shrinkage phenomenon of the flooring material was stabilized by the grooves formed on the back surface of the flooring material using the plywood as the base material layer (examples of the flooring material 1 and the flooring material of the comparative example 1) In the case of the flooring material using the plastic composite material as the substrate layer, the dimensional change due to the expansion phenomenon of the flooring material is stable due to the grooves formed on the backside (Example Flooring 2 and Comparative Example Flooring 2).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed exemplary embodiments. It will be possible to change it appropriately.

10 paint layer 20 surface pattern layer
30 Adhesive layer 40 Base layer
50 groove
51 first groove portion (groove portion in the longitudinal direction) 53 second groove portion (groove portion in the width direction)

Claims (9)

A flooring material having a surface layer laminated on a base layer,
The substrate layer is made of natural wood, processed wood or wood-plastic composite material,
Wherein a first groove portion formed in a longitudinal direction of the flooring material and a second groove portion formed in a width direction of the flooring material are formed orthogonally to each other on a back surface of the substrate layer.
The method according to claim 1,
Wherein the processed wood is a veneer, a plywood, a gypsum board or a MDF.
The method according to claim 1,
The wood-plastic composite material is composed of wood powder, a plastic resin and a crosslinking agent,
The wood and the plastic resin are contained in a weight ratio of 60 to 85:15 to 40,
The plastic resin is at least one selected from the group consisting of polyethylene (PE), polypropylene (PP) and polystyrene (PS)
Wherein the crosslinking agent is included in an amount of 1 to 5 parts by weight based on 100 parts by weight of the mixture of the wood and the plastic resin.
The method according to claim 1,
Wherein the first grooves have a plurality of grooves at intervals of 1 to 5 mm, and the second grooves have a plurality of grooves at intervals of 20 to 50 mm.
The method according to claim 1,
Wherein the grooves constituting the first groove portion and the second groove portion are formed to have a width (W) of 1 to 5 mm and a depth of 20 to 50% of the thickness of the base layer.
The method according to claim 1,
Wherein the base layer has a thickness of 3 to 25 mm.
The method according to claim 1,
Wherein a wood core layer is interposed between the base layer and the surface pattern layer.
The method according to claim 1,
Wherein the surface pattern layer is at least one selected from the group consisting of a veneer, a high-pressure melamine (HPM) layer, a low-pressure melamine (LPM) layer, a PP, a PVC and a PET sheet.
The method according to claim 1,
Wherein the flooring material is additionally formed with a connection structure by a T & G (Tongue and Groove), a click system, or a connector.
KR1020160016604A 2016-02-12 2016-02-12 Wooden floor materials with backside groove KR20170095074A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101858939B1 (en) 2018-03-20 2018-06-27 이종현 Manufacturing method for flooring having improved adhesive property
KR20220010787A (en) * 2020-07-20 2022-01-27 황성현 Floor tile for reducing floor noise
KR102404851B1 (en) * 2021-04-19 2022-06-07 (주)팬아시아 Wood flooring panel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101858939B1 (en) 2018-03-20 2018-06-27 이종현 Manufacturing method for flooring having improved adhesive property
KR20220010787A (en) * 2020-07-20 2022-01-27 황성현 Floor tile for reducing floor noise
KR102404851B1 (en) * 2021-04-19 2022-06-07 (주)팬아시아 Wood flooring panel

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