KR102061887B1 - Wax-treated wood flooring panel for shock absorption and reducing noise between floors and constructing method thereof - Google Patents

Abstract

The present invention relates to a wax-treated wood flooring panel for absorbing impact and reducing a noise between floors and a construction method thereof. According to the present invention, the wax-treated wood flooring panel has more excellent effects of reducing lightweight and heavyweight impact sound and is suitable for a standard value of floor impact sound blocking performance of the Ministry of Land, Infrastructure, and Transport. Accordingly, the wax-treated wood flooring panel for absorbing impact and reducing a noise between floors and the construction method thereof of the present invention can be usefully used as the wood flooring panel for reducing a noise between floors of an apartment house.

Description

Wax-treated wood flooring panel for shock absorption and reducing noise between floors and constructing method

The present invention relates to a wood-based floorboard for the shock-absorbing and interlaminar noise reduction and its construction method.

More than seven out of ten Koreans live in apartment houses, apartment houses, multi-family houses, etc. (2017 Population Housing Survey). Can be. As individualism swells, the dialogue between neighbors is cut off, and the conflict between floor noise continues to increase year by year, leading to arson and murder. Most of the apartment houses in Korea's early (early 1960s and early 1980s) were ramen (column) structures, but in the early 1980s, wall structures were developed and built for reasons of constructability, economic feasibility, and shortening of air. The structured apartment houses make up the majority.

In order to reduce the damage caused by the noise between floors, the government revised the `` Regulations on Housing Construction Standards, '' etc. based on Article 21 of the Housing Act, and the concrete slab thickness (from 180mm to 210mm) and floor impact sound blocking performance criteria (lightweight impact sound below 58dB, heavy impact sound 50dB) It has been implemented since May 2014, and it also operates inter-noise dispute mediation support agencies (inter-noise neighboring centers, happiness support centers with our family). At present, there are two types of floor structure of multi-unit house in Korea: slab thickness less than 180mm before the standard is strengthened and slab thickness 210mm (standard floor structure) after strengthening. As the thickness of the floor slab is thinner, the possibility of floor impact sound problem is much higher. Therefore, it is expected that the frequency of disputes will be higher in the multi-family houses that were built before the reinforcement of the standard, which was constructed in consideration of construction performance and economic efficiency without considering floor impact sound blocking performance. Therefore, residents living in multi-unit houses constructed before the standard reinforcement are not free from floor noise, and they have no choice but to solve the floor noise by using wooden floorboards and mats to reduce floor noise. According to the status of the application for consultation of floor noise counseling by the Floor Noise Neighbor Center, the number of counseling cases tended to decrease as of 2014, but the difference is insignificant, and the problem of floor noise is a social problem to be managed continuously. Table 1).

Application for Consultation on Floor Noise (As of November 30, 2016 year 2012 2013 2014 2015 2016. November Number 8,795 18,523 20,641 19,278 17,071

The main reason for the noise between floors received is that 'children's sound' accounts for more than half (72.1%) of the total number of cases. Monthly operational report).

The noise level that is currently being received is believed to have occurred in MDUs that were built before the strengthening of MDU construction standards (May 2014), but according to the survey data for each year of completion of MDUs, it was received from 2012 to November 2016. Of the 19,616 on-site diagnosis cases, 43.8% were completed before 2009, 16.1% were completed after 2009, and 40.1% were unable to confirm the completion year. The solution to floor noise in these apartments is to replace floor finishing materials by remodeling. As floor noise becomes a serious social problem, sales of wood-based floorboards and mats for floor noise reduction are on the rise.

According to the report of the safety survey of the floor noise reduction products for multi-unit households (November 2013) of the Korea Consumer Resource Center, 38 kinds of test subjects showed a difference in the degree of light impact, but there was a light impact impact reduction effect. In addition, the effect of reducing the weight impact sound was insignificant or insignificant. In particular, the effect of reducing the weight impact sound by floor finishing materials (PVC-based, wood-based) was difficult to expect.

Despite the problems of floor noise in apartments, if the majority of people are accustomed to apartment culture, a convenient living space, and it is difficult to change the culture of life in reality, it is necessary to reduce the noise between floors with the power of science and technology to provide a pleasant culture to the people. There is.

As a technique for wood-based floorboards for shock absorption and floor noise reduction in a multi-family house, Korean Unexamined Patent Publication No. 2018-0114677 discloses a non-foaming sound insulating sheet and a sound insulating floor comprising the same, and in Korean Patent No. 1548932. Although an interlayer flooring material for preventing interlayer noise due to a weight impact has been disclosed, the wood-based floorboard for shock absorption and interlayer noise reduction of the present invention and a construction method thereof have not been disclosed.

The present invention is derived from the above requirements, the present invention provides a wax-based wooden floorboard for shock absorption and interlayer noise reduction, and a construction method thereof, the light weight and the wax-treated wooden floorboard according to the invention The present invention was completed by confirming that the reduction effect on the weight impact sound was not only superior to the conventional floorboard but also appeared below the reference value of the Ministry of Land, Infrastructure and Transport, and that the impact sound and the floor noise generated in the apartment house can be reduced.

In order to achieve the above object, the present invention is a wood-based floorboard consisting of a decorative layer and a base layer, the base layer is a wax penetrates into the interior of the base layer, the lower portion of the base layer in contact with the heating finish floor surface is a wax layer It provides a wood-based floorboard for shock absorption and interlayer noise reduction, characterized in that formed.

The present invention also provides a method of constructing a wooden floorboard for shock absorption and interlayer noise reduction comprising applying an epoxy resin adhesive to the heating finish floor surface, and bonding the wooden floorboard of the present invention.

In addition to the effect of reducing the impact sound of the wax, hydrophobic wax has penetrated into the base material (plywood, fiber board, and single plate), which provides high water resistance and dimensional stability, so that a large amount of water may be left on the floor during use after construction. It doesn't happen at all.

Currently, the problem of wood floorboards other than the floor impact noise is the lack of water resistance, so that water swells into the gap between the floorboard and the floorboards and swells (in the case of reinforced floor using fiberboard as a base, Edge swelling) Discoloration (other wood-based floorboards) due to water absorption occurs, so the entire floorboard needs to be replaced, resulting in economic losses (partial replacement is impossible). The wood-based floorboards of the present invention are hydrophobic. Wax has the advantage of reducing this economic loss.

Figure 1 shows the basic configuration of the wood-based floorboard, ① + ② is a decorative layer, ③ is a base (core) layer.

The present invention is a wood-based floorboard consisting of a decorative layer and a base layer, the base layer is a shock absorption, characterized in that the wax is penetrated into the interior of the base layer, the lower portion of the base layer in contact with the heating finish floor surface is formed with a wax layer And it relates to a wood-based floorboard for interlayer noise reduction.

The decorative layer is preferably any one selected from natural wood, natural veneer and melamine resin impregnated paper, but is not limited thereto. The melamine resin impregnated paper may be LPM (Low Pressure Laminate) or HPM (High Pressure Laminate), but It is not limited.

The base layer is preferably, but not limited to, plywood, wood or fiberboard (preferably MDF).

The wood-based floorboard is a step of immersing the wood-based floorboard consisting of a decorative layer and a base layer until the bubble is not generated in the melted wax liquid at 60 ~ 70 ℃ to penetrate the wax into the base layer; And (2) solidifying the wax penetrated after the step (1), and then immersing it in a molten wax liquid at 60 to 70 ° C. to form a wax layer on a lower portion of the base layer in contact with the heating finish bottom surface. What is prepared by a manufacturing method comprising is not limited thereto.

The end plate may be further bonded to a lower portion of the base layer on which the wax layer of the wood-based floorboard is formed, but is not limited thereto.

The present invention also relates to a method of constructing a wooden floorboard for shock absorption and interlayer noise reduction comprising applying an epoxy resin adhesive to a heated finishing floor surface and bonding the wooden floorboard of the present invention.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for explaining the present invention in more detail, it is obvious to those skilled in the art that the scope of the present invention is not limited thereto.

The present invention is based on [relationship between floor condition and heavy impact sound shielding performance] presented by the Land and Housing Research Institute (Table 2), a wood system having light weight and weight impact sound reduction performance that cannot be achieved by conventional wood floor boards. An attempt was made to develop floorboards.

Relationship between floor condition and heavy shock sound isolation performance Condition of the floor Heavy shock sound blocking performance Whether it can be used to manufacture wood floorboards Improved Worse density If large If small ○ thickness Thick Thin × Rigidity Strong Weak ○ Modulus of elasticity If large If small ○ Compressive strength If large If small ○ Surface material flexibility Almost irrelevant

In general, wood-based floorboards are composed of a base layer (core, bottom junction) and a decorative layer (surface layer) (FIG. 1), and are classified into four types according to the material of the base layer and the decorative layer (Table 3)

Type and composition of wood floorboard division Wood floor Plywood floor Reinforced floor River floor Material (core) material Plywood or solid wood Plywood Fiberboard Plywood Decorative layer Natural wood (wood veneer)
(Thickness 2 mm or more) Natural veneer Low Pressure Laminate (LPM) High Pressure Laminate (HPM) Construction method Adhesive construction Adhesive construction Click construction Adhesive construction

1. Wax treatment

In the present invention, the wax treatment for the base layer is divided into a step of penetrating into the base layer and forming a wax layer under the base layer.

In the present invention, wood-based floorboards are immersed in a barrel containing a wax liquid melted at 60 to 70 ° C. to infiltrate wax into the base layer, thereby strengthening the base layer. When the wooden floorboard is immersed in the heated wax liquid container, the air existing inside the wood cells constituting the substrate is heated and expanded to be released to the outside, and the wax penetrates into the space of the cell lumen occupied by the air and is replaced by wax. do. In the present invention, by immersing the wood-based floorboard in the molten wax liquid confirmed the release of air from the generation of bubbles from the base layer, the bubble generation is stopped after a certain time, this time point to no further air discharge It was.

In the case of wax treatment, in the case of the reinforced floor where the base layer is made of fiberboard, wax penetration into the fiberboard is easier than that of the plywood.

In the embodiment of the present invention, the steel ridge of 10 (width) x 800 (length) x 7.5 (thickness) mm was first immersed for about 15 minutes to infiltrate the wax into the plywood.

Thereafter, the wood-based floorboard was removed from the wax liquor container, and the wax was completely cooled and solidified, and then immersed again to form a wax layer having a thickness of 1.0 and 2.0 mm under the wax-infiltrated wood-based floorboard base layer. At this time, the soaking time was treated within a short time so that the previously generated wax layer was not dissolved again in the heated wax liquid.

The wax penetration into the base material of the wood floorboard having the above dimensions was about 30.8 kg / m3 (primary immersion treatment), and when the 1 mm thick wax layer was formed on the base of the immersion wood floorboard, the average was about 1.2 kg / m2. The amount of wax was treated by wax, and the amount of wax was treated by an average amount of about 2.8 kg / m2 when forming a wax layer having a thickness of 2 mm, and the throughput varies depending on the size of the wood-based floorboard and the type of substrate (plywood, fiberboard, wood veneer, etc.). Can be.

In the flooring immersion treatment, the amount of wax treatment is expressed by volume, and in the treatment of forming the wax layer, the amount of wax treatment is indicated as the area (in the wax layer formation treatment, there is no wax penetration into the base material).

When the decorative layer is bonded after wax treatment to the substrate, the bonding strength may be weakened by the wax, so the wax treatment is characterized in that it is applied to the finished wood-based floorboards. It is preferable to prevent the contamination of the decorative layer by the wax by attaching the vinyl sheet and waxing and removing the adhesive vinyl sheet after the wax has solidified.

Waxed wood floorboards have a wax layer on the bottom, making it difficult to adhere to concrete slabs with adhesive. Therefore, wood veneers of 1 mm thickness are joined mechanically, using straight or U-shaped Taka nails, under the wax layer. To prevent poor adhesion.

In the case of reinforcing floor using the base layer as a fiber board (see Table 3), the method of installing on the slab is not bonding by using an adhesive, but because the floor board and the floor board are clicked (suspended), There is no need for additional joining.

5. Floor impact sound test and analysis

[How to measure]

The floor impact sound measurement method is based on KS F 2865 (Low Weight and Weight Impact Sound Reduction Laboratory Measurement Method by Floor Finishing Material) .The floor impact sound measurement room {(Measurement chamber slab thickness 180mm, volume of receiving chamber 60㎥ (KS standard 50㎥ or more)) Measured in

Floor impact sound generation is light weight and heavy impact sound, light impact sound is tapping machine and heavy impact sound is the impact point at the designated five points of the slab (at least 50cm away from the wall) according to KS F 2865 method ) Was generated. Impact Sound Measurement Lightweight and heavy impact sound generated at the excitation point of the facility slab is obtained by using a microphone (interlayer sound level meter) at the sound collection point of five designated measuring points (50 cm or more from the internal wall) inside the facility according to the KS F 2865 method. Measured.

[Analysis of bottom impact sound measurement results]

1) When the impact sound data measured and stored by the microphone (model name CESVA SC260) in the sound receiving chamber were downloaded to the analysis program (CESVA Capture Studio), 25 light and heavy impact sound measurement data were obtained per test specimen.

2) The measured light impact sound octave band measurement results are evaluated by comparison with the prescribed reference value.The evaluation method is a curve connecting the octave band measurement results of the center frequency 125 ~ 2,000Hz by KS F 2863-1 (2017). The inverted A characteristic reference curve is shifted up and down by 1dB up and down to move the reference curve as low as possible in the range that the total of the values exceeding the reference curve for 5 octave bands does not exceed 10dB. Afterwards, the inverse A characteristic weighted normalized floor impact sound level was derived from the reference curve value of the 500 Hz band, and the lightweight floor impact sound blocking performance of the test body was evaluated. Data analysis and evaluation of this process was performed using the CESVA Capture Studio analysis program.

3) The measured weight shock sound octave band measurement result is evaluated by comparing with the prescribed reference value, and the evaluation method is inverse to the curve connecting the octave band measurement result of the center frequency 63 ~ 500Hz by KS F 2863-2 (2017). The A characteristic reference curve is shifted up and down by 1dB up and down to move the reference curve as low as possible within the range that the total of the measured values exceeding the reference curve in 4 octave bands does not exceed 8 dB. After that, inverse A characteristic weight normalized floor impact sound level is derived from the reference curve value of 500 Hz band to evaluate the weight floor impact sound blocking performance of the test specimen. Data analysis and evaluation of this process was performed using the CESVA Capture Studio analysis program.

6. bottom impact sound Reduction  effect

The bottom impact sound reduction effect according to the wax treatment degree is as shown in Table 4.

division Practice Wax layer thickness 1mm Wax layer thickness 2mm Lightweight Shock Sound (dB) 61 53 53 Heavy impact sound (dB) 53 49 48

Floor Impact Sound Blocking Performance Standards by Ministry of Land, Infrastructure and Transport: Lightweight Impact Sound 58dB, Weight Impact Sound 50dB

Claims (5)

As a wood-based floorboard consisting of a decorative layer and a base layer,
The wood floorboard is
(1) after forming the decorative layer and the base layer, attaching an adhesive vinyl sheet for preventing wax penetration to the surface of the decorative layer;
(2) after the step (1), the wood-based floorboard is immersed in the molten wax liquid at 60 ~ 70 ℃ to penetrate the wax inside the substrate layer; And
(3) After the step (2), the permeated wax is solidified, and again immersed in the molten wax liquid at 60 ~ 70 ℃ to form a wax layer of 1 ~ 2mm in the lower part of the base layer in contact with the heating finish bottom surface The wood-based floorboard for shock absorption and interlayer noise reduction, characterized in that it is manufactured by a manufacturing method comprising a. The wooden floorboard of claim 1, wherein the decorative layer is any one selected from among natural wood, natural veneer, and melamine resin impregnated paper. The wooden floorboard of claim 1, wherein the base layer is plywood, wood, or fiberboard. The wood floor board for shock absorption and interlayer noise reduction according to claim 1, wherein a single plate is further bonded to a lower portion of the base layer on which the wax layer of the wood floor board is formed. A method of constructing a wooden floorboard for shock absorption and interlayer noise reduction comprising applying an epoxy resin adhesive to a heated finish floor surface and bonding the wooden floorboard according to any one of claims 1 to 4.

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