KR102166132B1 - Method of manufacturing floorboards for reducing noise between floors and floorboards using the same - Google Patents

Abstract

The present invention relates to a method for manufacturing a floor board for reducing a noise between floors and, more specifically, to a method for manufacturing a floor board for reducing a noise between floors and a floor board using the same, which can be economically produced and effectively absorb and reduce impact sound or vibration inducing the noise between the floors through a simple structure change additionally having a cork board having buffer properties, capable of absorbing and reducing the impact sound or the vibration which is a cause of the noise between the floors in a commercial facility such as a shopping mall or an apartment house such an apartment and a villa, thereby increasing satisfaction with respect to products. The method for manufacturing a floor board for reducing a noise between floors manufactures the floor board by stacking and attaching a surface base part (20) and a first plywood (30) and a cork board (40) and a second plywood (50) in order and cold-pressing the same by cold-press.

Description

Method of manufacturing floorboards for reducing noise between floors and floorboards using the same}

The present invention relates to manufacturing a floorboard for reducing inter-floor noise, and more particularly, in commercial facilities such as shopping centers, apartments, villas, etc., which can absorb and reduce impact sound or vibration that causes inter-floor noise. Manufacturing of floorboards for reducing interlayer noise that can increase product satisfaction by enabling economical production through simple structural change with additional buffering cork boards and effectively absorbing and reducing impact sounds or vibrations that cause interlayer noise. It relates to a method and a floorboard using the same.

Urban residential environments in Korea have been developed mainly in the form of apartments and apartment houses as dense residential spaces due to efficient use of narrow land and rising land prices for commercial or residential use.

In general, apartments, multi-family houses, row houses, officetels, and buildings are separated by slabs of concrete between floors and floors.

On this slab, styrofoam is usually installed on the slab for insulation and heating piping, and foam concrete is poured on it, heating piping is performed, and floor work leading to the final plastering mortar work is performed.

However, in spite of such slab floor construction, in multi-storey buildings, when impact or friction is applied to the floor due to people's walking, falling objects, moving furniture, etc., the resulting impact and friction sounds are transmitted to the lower floors through the slab. Therefore, there was a problem that noise pollution caused by interfloor noise was serious.

The interfloor noise is generally divided into a light-weight impact sound that contains high-frequency components, such as a falling impact sound of objects or moving fricatives of furniture, and a weight impact sound, which is a noise of low-frequency components, which is mainly generated by walking or running by children. However, as the problem of interfloor noise has recently emerged seriously, the lightweight impact sound must be 58 decibels (dB) or less, and the weight impact sound must be 50 decibels (dB) or less, or it must be constructed with a standard floor structure determined and notified by the Minister of Construction and Transportation. The regulations on housing construction standards for inter-floor noise have been reinforced or revised.

Accordingly, various techniques have been proposed to solve the problem of interlayer noise.

For example, in Korean Utility Model Registration No. 20-331857, a styrofoam layer having heat insulation, sound insulation, and moisture-proof properties, a porous upper and lower nonwoven fabric layer adhered by an adhesive on the top and bottom of the styrofoam layer, and the upper nonwoven fabric layer are laminated on the upper surface and the surface A means for reducing inter-floor noise consisting of a natural foam rubber layer with embossing is proposed, and in Korean Utility Model Registration No. 20-345879, a foam layer formed by mixing foam resin and concrete under the finishing mortar layer on the floor slab between the building floors. And, in the interlayer noise absorption structure in which the interlayer noise reduction member is interposed between the foam layer and the floor slab, the interlayer noise member is a first absorbent layer composed of a rigid synthetic resin foam from the top, and air in which the protrusions and recesses are regularly intersected. An interlayer noise absorption structure in which a second absorbent layer composed of a containing layer and a soft synthetic resin foam is sequentially stacked is proposed.

However, most of the conventional interlayer noise reduction members, including the above technologies, employ a wet method, so the construction is very cumbersome and the air is long. In addition, the blocking of noise depends only on the sound insulation or vibration-proof characteristics of the material itself, and the contact area of the reducing member to the slab is large, and the load of finishing materials such as mortar during the finishing work of embossing or protrusions. There is a problem that the actual noise reduction effect is not so great because it is pressed by.

As another example, Korean Patent Registration No. 10-0883183 includes a first member made of polyethylene; A second member attached to one surface of the first member, having an air layer formed therebetween, and made of a vinyl material; An inter-floor noise reduction material of a building constructed of a third member attached to one surface of the second member and laminated between the concrete floor surface and the indoor floor material was provided.

In other words, the inter-floor noise reduction material of the building suppresses the generation of inter-floor noise as much as possible and provides comfort to those who are active in the indoor space of the building, and the inter-floor noise reduction materials that are connected to each other are not separated from each other. And the moisture-proof function is more excellent, so that the effect of preventing corrosion of the concrete floor and indoor flooring.

However, in the prior art, by installing an insulation or noise reduction material on the concrete floor, it is possible to reduce to some extent the impact sound applied to the floor directly transmitted to the lower floor, but the impact sound applied to the floor surface There is a problem in that it is not possible to reduce or prevent the impact sound or noise transmitted to the lower layer through the wall formed integrally with the surface.

In addition, in order to solve the above problems, Korean Patent Registration No. 10-1267523 discloses an inter-floor noise prevention system that prevents the noise of the upper floor from being transmitted to the lower floor through the wall of a residential building.

That is, in the conventional interfloor noise prevention system, the floor layer of the residential space is not fixed to the wall, and the gap is maintained at a predetermined interval to reduce the occurrence of interfloor noise.

However, the conventional inter-floor noise prevention system has a complex structure and is difficult to construct, and since it is not possible to place heavy furniture or the like directly on the insulating material, a mortar must be separately installed thereon. In this case, the floor and wall thickness are excessively increased. There was this.

Korean Patent Registration No. 10-0883183 Korean Patent Registration No. 10-1267523 Korean Utility Model Registration No. 20-331857 Korean Utility Model Registration No. 20-345879

The present invention is to solve the above problems, by bonding the first plywood laminated with 3 to 7 layers of veneer using an adhesive at the bottom of the surface base portion, and applying the adhesive to both sides of a cork board at the bottom After bonding, the second plywood laminated with three layers of veneer is bonded and bonded by cold or hot press. The voids provided in the hexagonal honeycomb cork board play the role of air cushion, thereby reducing interlayer noise 20~ It can be reduced to 30 decibels (dB), and cushioning and elasticity are distributed by the air gap provided in the cork board to reduce fatigue when walking, and have excellent thermal insulation/warmability, which saves heating costs. It reduces harmful components (radon, chromium, etc.) from concrete) and has strong durability against moisture, which helps reduce the deformation of the floor and maintains temperature and humidity, thereby preventing warpage, and also due to the simplicity of the process and the saving of raw materials. A floorboard manufacturing method for reducing interlayer noise and using the same, which solves the problem of cracking due to contraction and expansion by applying heat during ondol, as it is economical and has excellent wear resistance, impact resistance, discoloration resistance, cold resistance, durability, and heat resistance. Its purpose is to provide a floorboard.

Specific means for achieving the above object,

"The first plywood 30 constructed by bonding the surface base portion 20 to which the adhesive 10 is applied to the bottom surface and the veneers of 3 to 7 with an adhesive 10 and an adhesive on the bottom of the first plywood 30 ( 10) is applied to the cork board 40 and the second plywood 50 bonded by applying the adhesive 10 to the bottom of the cork board 40 are sequentially laminated and bonded and cold pressed with a cold press. Including, the thickness of the surface base portion 20 is limited to 0.2 ~ 4mm, the thickness of the first plywood 30 is limited to 2.5 ~ 4mm, the thickness of the cork board 40 is limited to 0.6 ~ 3mm, and the second The plywood 50 is configured to be limited to a thickness of 2.5 to 4 mm, and the cold press is cold-pressed at a pressure of 5 to 10 kg/cm ² for 30 to 60 minutes, and the adhesive 10 is 54.1% water and polyvinyl alcohol ( Polyvinyl alcohol) 4.0%, polyvinyl acetate 41.5%, polyoxyethylene nonylphenol ether 0.2%, sodium acetate 0.1% and ammonium persulfate 0.1% are mixed A method for manufacturing a floorboard for reducing interlayer noise, comprising limited to 8 to 15 g/cm ² of the applied amount of the adhesive 10,
The first plywood 30 formed by bonding the surface base portion 20 to which the adhesive 10 ′ is applied and the veneers of 3 to 7 with an adhesive 10 ′, and an adhesive on the bottom of the first plywood 30 The cork board 40 adhered by applying (10') and the second plywood 50 adhered by applying the adhesive 10' to the bottom of the cork board 40 are sequentially laminated and bonded, and then hot-pressed with a hot-pressing press. Including manufacturing, the thickness of the surface base portion 20 is 0.2 ~ 4mm, the thickness of the first plywood 30 is limited to 2.5 ~ 4mm, the thickness of the cork board 40 is limited to 0.6 ~ 3mm, and The second plywood 50 is configured to be limited to a thickness of 2.5 to 4 mm, and the hot press is hot-pressed at a pressure of 5 to 10 kg/cm ² for 30 to 60 minutes, and the adhesive 10' is urea melamine co-condensation. 70.48% resin, 14.1% polyvinyl acetate (PVAc) emulsion, 14.1% wheat flour as an extender, and 1.32% ammonium chloride (NH ₄ Cl) are mixed, and the amount of the adhesive (10') applied is 8~ A method for manufacturing a floorboard for reducing inter-floor noise, including those limited to 15g/cm ² ,
The first plywood 30 and the second plywood 50 have a thickness of 2.5 to 4 mm MDF (Medium Density Fiberboard) or HDF (High Density Fiberboard); ,
The surface base portion 20 is any of natural veneer, processed veneer, LPM (Low Pressure Melamine impregnated paper), HPM (High Pressure Melamine Sheet), PET Sheet, Olefin Sheet, PVC Sheet, Cork Sheet, and natural and artificial leather Sheet. Floorboard manufacturing method for reducing interlayer noise, characterized in that consisting of one,
The first plywood 30 and the first plywood 30 formed by bonding the surface base portion 20 to which the adhesive (10,10') is applied and the veneers of 3 to 7 with an adhesive (10,10') The cork board 40 adhered by applying an adhesive (10, 10') to the bottom of the cork board 40 and the second plywood 50 adhered by applying the adhesive (10, 10') to the bottom of the cork board 40 are sequentially Laminated and bonded and cold-pressed with a cold press or hot-pressed with a hot press, the thickness of the surface base portion 20 is 0.2 ~ 4mm, the thickness of the first plywood 30 is limited to 2.5 ~ 4mm, the The thickness of the cork board 40 is limited to 0.6 to 3 mm, and the thickness of the second plywood 50 is limited to 2.5 to 4 mm, and the cold or hot pressure condition is 5 minutes by using a cold or hot press for 30 to 60 minutes. Cold or hot pressure at a pressure of ~10 kg/cm ² , but the adhesive 10 contains 54.1% water, 4.0% polyvinyl alcohol, 41.5% polyvinyl acetate, and polyoxyethylene nonylphenol ether. (Polyoxyethylene nonylphenol ether) 0.2%, sodium acetate (Sodium Acetate) 0.1% and ammonium persulfate (Ammonium Persulfate) 0.1% is a mixture of 0.1%, and the adhesive (10') is composed of urea melamine cocondensation resin 70.48% And polyvinyl acetate (PVAc) emulsion 14.1%, wheat flour 14.1% as an extender, and 1.32% ammonium chloride (NH ₄ Cl) are mixed, and the amount of the adhesive (10,10') applied is 8 to 15 g Floorboards for reducing inter-floor noise, including those limited to /cm ² ,
The first plywood 30 and the second plywood 50 are floorboards for reducing inter-layer noise comprising selecting any one of MDF (Medium Density Fiberboard) or HDF (High Density Fiberboard) having a thickness of 2.5 to 4 mm,
The surface base portion 20 is any of natural veneer, processed veneer, LPM (Low Pressure Melamine impregnated paper), HPM (High Pressure Melamine Sheet), PET Sheet, Olefin Sheet, PVC Sheet, Cork Sheet, and natural and artificial leather Sheet. It is possible to achieve the above object by using a "floorboard for reducing interlayer noise, characterized in that it is made of one" as its constitutive feature.

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The present invention having the above-described configuration can reliably block moisture penetration while maintaining the pattern of the surface substrate to be laminated while having a large surface hardness, and there is little heat shrinkage or thermal expansion, and interlayer delamination between components and moisture can penetrate. There are no possible voids, and the interlayer noise can be reduced to 20~30 decibels (dB), and the cushioning and elasticity by the voids provided in the cork board disperse the load transmitted to the body when walking, reducing fatigue when walking. It has excellent heat insulation/heat retention, saves heating costs, reduces harmful ingredients (radon, chromium, etc.) from molten (concrete), has strong durability against moisture, reduces deformation of the floor and prevents bending by enabling maintenance of temperature and humidity. In addition, it has excellent abrasion resistance, impact resistance, discoloration resistance, cold resistance, durability, heat resistance, etc., while at the same time promoting economical efficiency through the simplicity of the process and saving raw materials. By applying heat during ondol, it solves the problem of cracking due to shrinkage and expansion. It can be effective.

In the above, the present invention has been illustrated and described by way of example of a specific preferred embodiment, but the present invention is not limited to the above-described embodiment, and within the scope of the spirit of the present invention, ordinary knowledge in the technical field to which the present invention belongs. Various changes and modifications will be possible by those who have

1 is an exploded front view of the inventor's floorboard,
Figure 2 is a combined cross-sectional view of the floorboard manufactured by the present inventors floorboard manufacturing method for reducing interlayer noise,
3 is a combined cross-sectional view of the floorboard manufactured by the method of manufacturing a floorboard for reducing interlayer noise according to the present invention, showing that the first plywood and the second plywood are selected from either Medium Density Fiberboard (MDF) or High Density Fiberboard (HDF). It is a cross-sectional view.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in the present specification are exemplified only for the purpose of describing the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention are Since various changes can be added and may have various forms, all changes, equivalents, or substitutes included in the spirit and scope of the present invention are included, and terms or words used in the specification and claims are conventional or dictionary. The meaning and concept consistent with the technical idea of the present invention are not limited to the meaning, and based on the fact that the inventor can appropriately define the concept of terms in order to describe his own invention in the best way. Should be interpreted as. Accordingly, the embodiments described in the specification of the present invention and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, but are substituted at the time of filing of the present invention. It will be understood that various equivalents and variations that may be made are possible or exist.

In addition, unless otherwise defined in the specification of the present invention, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Have. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this specification. Does not.

Hereinafter, a method of manufacturing a floorboard for reducing inter-floor noise and a floorboard using the same will be described in detail with reference to the drawings.

1 is a separate front view of the inventor's floorboard, FIG. 2 is a combined cross-sectional view of the floorboard manufactured by the inventors' floorboard manufacturing method for interlayer noise reduction, and FIG. 3 is a floorboard manufactured by the inventor's floorboard manufacturing method for interlayer noise reduction It is a combined cross-sectional view showing that the first plywood and the second plywood are selected from either Medium Density Fiberboard (MDF) or High Density Fiberboard (HDF).

First, a method of manufacturing a floorboard for reducing interlayer noise in the present invention is as follows.

[Example 1]

In this embodiment, first, the adhesive 10 is applied to the bottom of the surface base portion 20 having a thickness of 0.2 to 4 mm,

The surface base portion 20 is any of natural veneer, processed veneer, LPM (Low Pressure Melamine impregnated paper), HPM (High Pressure Melamine Sheet), PET Sheet, Olefin Sheet, PVC Sheet, Cork Sheet, and natural and artificial leather Sheet. It is preferable that it is made of one, and in addition, it may include a sheet and printed matter for the surface decoration of the floorboard.

As described above, after the surface base portion 20 is positioned at the top, the following components are sequentially adhered to the lower portion thereof with an adhesive 10, specifically,

A first plywood 30 having a thickness of 2.5 to 4 mm formed by bonding 3 to 7 veneers with an adhesive 10; A cork board 40 having a thickness of 0.6 to 3 mm adhered by applying an adhesive 10 to the bottom of the first plywood 30; A second plywood 50 having a thickness of 2.5 to 4 mm adhered by applying an adhesive 10 to the bottom of the cork board 40; Is sequentially laminated and bonded.

After that, it was prepared by cold pressing with a cold press at a pressure of 5 to 10 kg/cm ² for 30 to 60 minutes.

At this time, preferably, the veneer (V) has excellent durability unlike ordinary veneers, and in the case of the general veneer, the outer periphery of the wood is cut to a certain thickness, whereas the veneer adopted in this embodiment is general It is manufactured by laminating and bonding veneers and cutting them in a horizontal direction with a certain thickness from the top by standing at 90 degrees, and its durability and other efficacy are different from general veneers.

On the other hand, the adhesive 10 is water 54.1%, polyvinyl alcohol (Polyvinyl alcohol) 4.0%, polyvinyl acetate (Polyvinyl acetate) 41.5%, polyoxyethylene nonylphenol ether (Polyoxyethylene nonylphenol ether) 0.2% and sodium acetate (Sodium) It is a mixture of 0.1% of Acetate and 0.1% of Ammonium Persulfate. It has excellent adhesion and can be adhered to various substrates (wood, plywood, HPM, metal plate, etc.) without distinction. As an excellent one,

It is preferable that the applied amount of the adhesive 10 is limited to 8 to 15 g/cm ² .

More preferably, as shown in Fig. 3, the first plywood 30 and the second plywood 50 have a thickness of 2.5 to 4 mm, and either one of MDF (Medium Density Fiberboard) or HDF (High Density Fiberboard) is selected. May be.

This is illustrated in FIGS. 1 to 3.

[Example 2]

In the case of this embodiment, the difference from Example 1 is that in the case of Example 1, a cold-pressing press is used for bonding, and as a result of this, the adhesive during cold-pressing has a difference in the adhesive used as the hot-pressing press is used. Is,

The surface base portion 20 is any of natural veneer, processed veneer, LPM (Low Pressure Melamine impregnated paper), HPM (High Pressure Melamine Sheet), PET Sheet, Olefin Sheet, PVC Sheet, Cork Sheet, and natural and artificial leather Sheet. It is preferable that it is made of one, and in addition, it may include a sheet and printed matter for the surface decoration of the floorboard.

As described above, after the surface base portion 20 is positioned at the top, the following components are sequentially adhered to the lower portion thereof with an adhesive 10'. Specifically,

A first plywood 30 having a thickness of 2.5 to 4 mm formed by bonding 3 to 7 veneers with an adhesive 10 ′; A cork board 40 having a thickness of 0.6 to 3 mm bonded by applying an adhesive 10 ′ to the bottom of the first plywood 30; A second plywood 50 having a thickness of 2.5 to 4 mm adhered by applying an adhesive 10 to the bottom of the cork board 40; Is sequentially laminated and bonded.

After that, it is manufactured by hot pressing with a hot press at a pressure of 5 to 10 kg/cm ² for 30 to 60 seconds.

At this time, preferably, the veneer (V) has excellent durability unlike ordinary veneers, and in the case of the general veneer, the outer periphery of the wood is cut to a certain thickness, whereas the veneer adopted in this embodiment is general It is manufactured by laminating and bonding veneers and cutting them in a horizontal direction with a certain thickness from the top by standing at 90 degrees, and its durability and other efficacy are different from general veneers.

On the other hand, the adhesive (10') adopted in this embodiment is a mixture of 70.48% of urea melamine cocondensation resin, 14.1% of polyvinyl acetate (PVAc) emulsion, 14.1% of wheat flour as an extender, and 1.32% of ammonium chloride (NH ₄ Cl). It was made.

In addition, preferably, the amount of the adhesive (10, 10') applied is limited to 8 to 15 g/cm ² .

More preferably, as shown in Fig. 3, the first plywood 30 and the second plywood 50 have a thickness of 2.5 to 4 mm, and either one of MDF (Medium Density Fiberboard) or HDF (High Density Fiberboard) is selected. May be.

This embodiment is also as shown in FIGS. 1 to 3.

By implementing the present invention in Examples 1 and 2 as described above, interlayer noise can be reduced to 20 to 30 decibels (dB), and cushioning and elasticity are transmitted to the body when walking by the voids provided in the cork board. By distributing the load, it reduces fatigue when walking, and has excellent thermal insulation/warmability, saving heating costs, reducing harmful components (radon, chromium, etc.) from molten (concrete), and having strong durability against moisture, reducing deformation of the floor and reducing temperature and humidity. It also enabled the maintenance of

Hereinafter, another configuration of the present invention, a floorboard for reducing inter-floor noise, will be described with reference to the drawings.

First, looking at another configuration of the present invention together with the drawings in FIGS. 1 to 3,

A surface base portion 20 having a thickness of 0.2 to 4 mm to which adhesives 10 and 10 ′ are applied to the bottom surface;

A first plywood 30 having a thickness of 2.5 to 4 mm formed by bonding 3 to 7 veneers with an adhesive (10, 10');

A cork board 40 having a thickness of 0.6 to 3 mm bonded by applying an adhesive 10 and 10 ′ to the bottom of the first plywood 30;

A second plywood 50 having a thickness of 2.5 to 4 mm bonded by applying an adhesive 10, 10 ′ to the bottom of the cork board 40; and sequentially bonding using the laminated adhesive 10,

It is manufactured by cold pressure with a cold press or hot press with a hot press, and is cold-pressed at a pressure of 5 to 10 kg/cm ² for 30 to 60 minutes using a cold press during the cold press,

The adhesive (10) adopted at this time was 54.1% of water, 4.0% of polyvinyl alcohol, 41.5% of polyvinyl acetate, 0.2% of polyoxyethylene nonylphenol ether, and sodium acetate. Acetate) 0.1% and ammonium persulfate (Ammonium Persulfate) 0.1% is preferably made by mixing,

It is more preferable that the applied amount of the adhesive 10 is limited to 8 to 15 g/cm ² .

More preferably, as shown in Fig. 3, the first plywood 30 and the second plywood 50 have a thickness of 2.5 to 4 mm, and either one of MDF (Medium Density Fiberboard) or HDF (High Density Fiberboard) is selected. May be.

On the other hand, the surface base portion 20 is a natural veneer, processed veneer, LPM (Low Pressure Melamine impregnated paper), HPM (High Pressure Melamine Sheet), PET Sheet, Olefin Sheet, PVC Sheet, Cork Sheet, natural and artificial leather sheet It is most preferable to consist of any one of them, but in addition, it may include a sheet and printed matter for the surface decoration of the floorboard.

Next, replacing the cold pressure and bonding by hot pressure using a hot pressure press also belongs to the present invention,

During hot pressure, it is possible to manufacture floorboards by hot pressing with a pressure of 5 to 10 kg/cm ² for 30 to 60 seconds using a hot pressure press, and the adhesive (10') adopted at this time is 70.48% urea melamine cocondensation resin and polyvinyl acetate (polyvinyl acetate) PVAc) emulsion 14.1%, wheat flour as an extender 14.1% and ammonium chloride (NH ₄ Cl) 1.32% is preferably a mixture,

It is more preferable that the applied amount of the adhesive (10, 10') is limited to 8 to 15 g/cm ² .

In addition, in this embodiment, the surface base portion 20 is a natural veneer, processed veneer, LPM (Low Pressure Melamine impregnated paper), HPM (High Pressure Melamine Sheet), PET Sheet, Olefin Sheet, PVC Sheet, Cork Sheet, natural veneer. And it is preferably made of any one of the artificial leather sheet, in addition to that may include a sheet (sheet) and prints for the surface decoration of the floorboard.

The present invention having the above-described configuration can reliably block moisture penetration while maintaining the pattern of the surface substrate to be laminated while having a large surface hardness, and there is little heat shrinkage or thermal expansion, and interlayer delamination between components and moisture can penetrate. There are no possible voids, and the interlayer noise can be reduced to 20~30 decibels (dB), and the cushioning and elasticity by the voids provided in the cork board disperse the load transmitted to the body when walking, reducing fatigue when walking. It has excellent heat insulation/heat retention, saves heating costs, reduces harmful ingredients (radon, chromium, etc.) from molten (concrete), has strong durability against moisture, reduces deformation of the floor and prevents bending by enabling maintenance of temperature and humidity. In addition, it has excellent abrasion resistance, impact resistance, discoloration resistance, cold resistance, durability, heat resistance, etc., while at the same time promoting economical efficiency through the simplicity of the process and saving raw materials. By applying heat during ondol, it solves the problem of cracking due to shrinkage and expansion. It can be effective.

As described above, although the present invention has been described by a limited embodiment and drawings, the present invention is not limited to the above embodiment, as well as from the above description by a person having ordinary technical knowledge in the field to which the present invention belongs. It goes without saying that various modifications and variations may be possible.

Therefore, the technical idea in the present invention should be grasped by the claims described below, but it will be apparent that all of the equivalent or equivalent modifications thereof belong to the scope of the technical idea of the present invention.

10: adhesive 10': adhesive
20: surface base portion 30: first plywood
40: cork board 50: second plywood
V: veneer

Claims (15)

The first plywood 30 formed by bonding the surface base portion 20 to which the adhesive 10 is applied to the bottom surface and the veneers of 3 to 7 with an adhesive 10 and an adhesive 10 on the bottom of the first plywood 30 ) Is applied to the cork board 40 and the second plywood 50 bonded by applying the adhesive 10 to the bottom of the cork board 40 are sequentially laminated and bonded, and cold-pressed with a cold press. and,
The thickness of the surface base portion 20 is 0.2 ~ 4mm, the thickness of the first plywood 30 is limited to 2.5 ~ 4mm, the thickness of the cork board 40 is limited to 0.6 ~ 3mm, and the second plywood 50 ) Of 2.5~4mm thick,
The cold press is cold pressed at a pressure of 5 to 10 kg/cm ² for 30 to 60 minutes,
The adhesive 10 is water 54.1%, polyvinyl alcohol (Polyvinyl alcohol) 4.0%, polyvinyl acetate (Polyvinyl acetate) 41.5%, polyoxyethylene nonylphenol ether (Polyoxyethylene nonylphenol ether) 0.2% and sodium acetate (Sodium Acetate) It is limited to a mixture consisting of 0.1% and 0.1% of ammonium persulfate.
Floorboard manufacturing method for reducing interlayer noise, including the amount of the adhesive (10) is limited to 8 ~ 15g / cm ² .
The first plywood 30 formed by bonding the surface base portion 20 to which the adhesive 10 ′ is applied and the veneers of 3 to 7 with an adhesive 10 ′, and an adhesive on the bottom of the first plywood 30 The cork board 40 adhered by applying (10') and the second plywood 50 adhered by applying the adhesive 10' to the bottom of the cork board 40 are sequentially laminated and bonded, and then hot-pressed with a hot-pressing press. Including manufacturing,
The thickness of the surface base portion 20 is 0.2 ~ 4mm, the thickness of the first plywood 30 is limited to 2.5 ~ 4mm, the thickness of the cork board 40 is limited to 0.6 ~ 3mm, and the second plywood 50 ) Of 2.5~4mm thick,
The hot pressure press is hot-pressed at a pressure of 5-10 kg/cm ² for 30-60 minutes,
The adhesive 10' is composed of a mixture of 70.48% of urea melamine cocondensation resin, 14.1% of polyvinyl acetate (PVAc) emulsion, 14.1% of wheat flour as an extender, and 1.32% of ammonium chloride (NH ₄ Cl),
Floorboard manufacturing method for reducing interlayer noise, including the amount of the adhesive (10') is limited to 8 ~ 15g / cm ² .
The method according to claim 1 or 2,
The first plywood 30 and the second plywood 50 has a thickness of 2.5 to 4mm MDF (Medium Density Fiberboard) or HDF (High Density Fiberboard), comprising selecting any one of floorboard manufacturing method for reducing interlayer noise.
delete delete delete The method according to claim 1 or 2,
The surface base portion 20 is any of natural veneer, processed veneer, LPM (Low Pressure Melamine impregnated paper), HPM (High Pressure Melamine Sheet), PET Sheet, Olefin Sheet, PVC Sheet, Cork Sheet, and natural and artificial leather Sheet. Floorboard manufacturing method for reducing interlayer noise, characterized in that consisting of one.
The first plywood 30 and the first plywood 30 formed by bonding the surface base portion 20 to which the adhesive (10,10') is applied and the veneers of 3 to 7 with an adhesive (10,10') The cork board 40 adhered by applying an adhesive (10, 10') to the bottom of the cork board 40 and the second plywood 50 adhered by applying the adhesive (10, 10') to the bottom of the cork board 40 are sequentially Including lamination bonding and manufacturing by cold pressing with a cold press or hot pressing with a hot press,
The thickness of the surface base portion 20 is 0.2 ~ 4mm, the thickness of the first plywood 30 is limited to 2.5 ~ 4mm, the thickness of the cork board 40 is limited to 0.6 ~ 3mm, and the second plywood 50 ) Of 2.5~4mm thick,
Cold or hot pressure conditions are cold or hot at a pressure of 5 to 10 kg/cm ² for 30 to 60 minutes using a cold or hot press,
The adhesive 10 is water 54.1%, polyvinyl alcohol (Polyvinyl alcohol) 4.0%, polyvinyl acetate (Polyvinyl acetate) 41.5%, polyoxyethylene nonylphenol ether (Polyoxyethylene nonylphenol ether) 0.2% and sodium acetate (Sodium Acetate) It consists of limited to that consisting of a mixture of 0.1% and ammonium persulfate (Ammonium Persulfate) 0.1%,
The adhesive 10' is composed of a mixture of 70.48% of urea melamine cocondensation resin, 14.1% of polyvinyl acetate (PVAc) emulsion, 14.1% of wheat flour as an extender, and 1.32% of ammonium chloride (NH ₄ Cl),
Floorboard for reducing interlayer noise, comprising the amount of the adhesive (10, 10') is limited to 8 ~ 15g / cm ² .
The method of claim 8,
The first plywood 30 and the second plywood 50 are floorboards for reducing inter-layer noise comprising selecting any one of MDF (Medium Density Fiberboard) or HDF (High Density Fiberboard) having a thickness of 2.5 to 4mm.
delete delete delete delete delete The method of claim 8,
The surface base portion 20 is any of natural veneer, processed veneer, LPM (Low Pressure Melamine impregnated paper), HPM (High Pressure Melamine Sheet), PET Sheet, Olefin Sheet, PVC Sheet, Cork Sheet, and natural and artificial leather Sheet. Floorboard for reducing inter-floor noise, characterized in that consisting of one.

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