Interlayer noise prevention material and method for manufacturing same

Abstract

The present invention relates to an interlayer noise prevention material that can overcome the limitations of existing interlayer noise prevention materials by combining a special vacuum polymer layer and a high-density multilayer high-compression micro-foam layer, and that has excellent noise attenuation efficiency and superior durability, and is thus applicable to various fields of construction. The present invention minimizes impact sounds and vibration sounds generated between residential boundaries of a building, particularly between upper and lower floors, to provide a comfortable residential environment, and can further contribute to energy savings by improving thermal insulation properties, and can contribute to environmental protection through material conservation and sustainable design. The interlayer noise prevention material for multi-story buildings is capable of effectively blocking noise and vibration through a combination of a polymer layer maintaining a vacuum state and a multilayer high-compression micro-foam layer, thereby minimizing inconvenience caused by noise generated from upper floors of multi-story buildings.

Description

inter-floor noise prevention material and method of manufacturing the inter-floor noise prevention material

[0001] The present invention relates to an innovative carbon dioxide-reducing inter-floor noise-blocking material that blocks noise and vibration, and a method for manufacturing said inter-floor noise-blocking material. More specifically, the invention relates to an inter-floor noise-blocking material and a method for manufacturing said inter-floor noise-blocking material that is universally applicable to various construction fields, as well as having excellent noise and vibration blocking effects and superior durability, by forming a high-density fine foam layer on the upper and lower surfaces of a vacuum polymer layer.

[0002] Generally, inter-floor noise refers to noise pollution that primarily occurs in multi-family or apartment buildings.

[0003] Inter-floor noise is a collective term for sounds such as toilet flushing, floor impact noise, piano playing, audio, conversation, and TV noise; among these, floor impact noise is classified into light impact noise (50 dB or less) and heavy impact noise (50 dB or more).

[0004] As life shifted from being centered on detached houses in the past to multi-unit housing becoming commonplace today, problems have begun to emerge. Due to the nature of multi-unit housing, where multiple households live separated by a single layer of walls and floors, disputes over noise between floors can occur frequently.

[0005] In particular, among inter-floor noises, floor impact sound (solid-borne sound) generated by direct impact on concrete surfaces has the characteristic of being easily transmitted to adjacent households.

[0006] This noise is primarily caused by sounds from the floors above and below, such as children running, dragging objects, or dropping them. Like other forms of noise pollution, inter-floor noise has a negative impact on mental and physical health, leading to social issues such as disputes between neighbors and complaints.

[0007]

[0008] Typically, sound insulation is the blocking of sound exchange with the outside, and a certain degree of sound insulation effect can be achieved by installing partitions or materials with interlocking slats made of materials that are difficult to propagate sound or vibrations to surround the inner surface of the wall, by configuring windows in double layers, or by using layers of sound-absorbing materials such as thick curtains or felt.

[0009] This soundproofing effect is widely used in floor surfaces between levels or walls between adjacent units in multi-unit buildings such as apartments, and is intended to minimize damage caused by noise and impact between units by fundamentally blocking the transmission of floor impact noise from the upper floor or noise from the adjacent unit to the lower floor or adjacent unit.

[0010] In particular, floor impact sound subject to sound insulation refers to the phenomenon where an impact applied to a structure (the floor of the upper floor) is transmitted to the structure in the form of vibration and then radiated to the ceiling or walls of the floor below.

[0011] As such, the quality of individual residential life has recently been significantly degraded due to noise occurring between upper and lower floors of multi-unit dwellings, and consequently, complaints regarding daily life are becoming frequent. Inter-floor noise is sound that acts as pollution in daily life, as it is transmitted through floor slabs or walls into adjacent units above, below, left, and right by solid-borne noise caused by people walking or falling objects on the upper floors of multi-unit dwellings such as apartments, and gas-borne noise generated by various acoustic devices. It is classified into light impact sound, which generates a lot of sound in the high-frequency range, and heavy impact sound, which generates a lot of sound in the low-frequency range, such as adult walking or children jumping.

[0012] In Korean housing, where sitting on the floor is the norm, there is a growing need for floor impact sound reduction materials capable of preventing heavyweight impact sounds in addition to lightweight impact sounds.

[0013] However, conventional simple methods, such as installing a buffer member between the floor slab layer and the ondol layer, have the disadvantage of having minimal effect in sound insulation and sound absorption, so there is a need to develop a more effective inter-floor noise shielding structure.

[0014] The present invention was developed to improve upon the aforementioned problems. The objective of the present invention is to provide an inter-floor noise prevention material capable of overcoming the limitations of existing inter-floor noise prevention materials by combining a vacuum special polymer layer and a high-density multilayer high-compression micro-foam layer, and a method for manufacturing said inter-floor noise prevention material.

[0015]

[0016] The problem that the present invention aims to solve is to provide an inter-floor noise prevention material that is applicable to various construction fields due to its excellent noise reduction efficiency and durability, and a method for manufacturing said inter-floor noise prevention material.

[0017]

[0018] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below.

[0019] To achieve the above objective, the present invention provides a method for manufacturing an inter-floor noise prevention material that is installed on a concrete slab of a multi-story building to block noise and vibration generated from the building floor, comprising: a first step of forming a vacuum polymer layer; and a second step of forming a multi-layer high-compression micro-foam layer on the upper and lower surfaces of the vacuum polymer layer; wherein the multi-layer high-compression micro-foam layer blocks external noise and vibration while protecting the upper and lower surfaces of the vacuum polymer layer.

[0020]

[0021] In the second step above, at least one laminated structure may be formed in which a multilayer high-compression microfoam layer is formed on the upper and lower surfaces of the vacuum polymer layer.

[0022]

[0023] The interior of the above vacuum polymer layer maintains a safe vacuum without a medium and maintains the vacuum state even under external shock.

[0024]

[0025] The above multilayer high-compression microfoam layer can improve compressive strength and sound absorption performance by protecting the upper and lower surfaces of the vacuum polymer layer while blocking external noise and vibration, and by having a high-density structure.

[0026]

[0027] Meanwhile, the present invention is a soundproofing material for inter-floor noise that is installed on a concrete slab of a multi-story building to block noise and vibration generated in the upper floors of a multi-story building, comprising: a vacuum polymer layer that maintains a vacuum state; and a multi-layer high-compression micro-foam layer formed on the upper and lower surfaces of the vacuum polymer layer, respectively; wherein the multi-layer high-compression micro-foam layer is formed in a laminated structure of at least one layer that protects the vacuum polymer layer while effectively blocking noise and vibration.

[0028]

[0029] The above vacuum polymer layer is configured to maintain a vacuum state inside the polymer material, thereby providing the function of absorbing external shocks and blocking noise.

[0030]

[0031] The above multilayer high-compression micro-foaming layer is made of polyurethane or polyethylene material and can be configured to minimize the transmission of noise by forming a fine foam structure under high compression.

[0032]

[0033] The above multilayer high-compression microfoam layer can be configured to reduce noise by compressing a polyurethane material under high pressure to form a small bubble structure, thereby absorbing energy when noise passes through the foam layer.

[0034]

[0035] The above laminated structure can be configured such that the vacuum polymer layer and the multilayer high-compression microfoam layer are alternately laminated to block inter-floor noise in multilayer buildings.

[0036]

[0037] A protective film may be additionally attached to the upper and lower surfaces of the above laminated structure to prevent damage during construction.

[0038]

[0039] The thickness of the vacuum polymer layer is formed to be 5 mm to 20 mm, which can provide an optimal noise blocking effect.

[0040]

[0041] The above vacuum polymer layer may be configured to prevent discoloration or damage caused by ultraviolet rays by additionally applying a UV blocking coating to increase durability against changes in the external environment.

[0042]

[0043] The vacuum polymer layer may be configured to include: a multi-composite layer film having a tube shape; and a vacuum insulator inserted into the tube of the multi-composite layer film to support the inside of the tube of the film and to form a vacuum space for thermal insulation inside.

[0044]

[0045] The above multi-composite layer film may comprise a metal foil deposition layer, a nylon resin layer, a TIE adhesive layer, an ethylene vinyl alcohol barrier layer, a TIE adhesive layer, and an innermost heat-sealed layer.

[0046]

[0047] Furthermore, the multi-composite layer film may be composed of: a protective layer that absorbs and disperses external shocks; a barrier layer that is adhered to the lower part of the protective layer and blocks the inflow of external gas or moisture; and a heat-welded layer that is adhered to the lower part of the barrier layer and adheres to the surface of the vacuum insulation.

[0048]

[0049] A flame-retardant coating layer with a flame retardant added can be formed on the upper part of the above protective layer.

[0050]

[0051] The flame-retardant coating layer may be formed by coating a composition of 20 to 80 parts by weight of the flame retardant and 20 to 80 parts by weight of a polymer resin and an organic solvent on the upper surface of the protective layer.

[0052]

[0053] The above flame retardant may be composed of one or more substances selected from phosphorus compounds, nitrogen compounds, aluminum hydroxide, and antimony trioxide.

[0054]

[0055] The above multi-composite layer film has an oxygen permeability (cc / m²) 2 .24h.atm); 0, moisture permeability (g / m² 2 .24h.atm); 0, and thermal conductivity (kcal / mh℃) (or W / (m·k); 0.0001 or less may be configured.

[0056]

[0057] The above vacuum insulation may be composed of a honeycomb structure in which a plurality of unit vacuum insulations in the shape of a regular hexagonal prism with a hollow formed therein are continuously connected.

[0058]

[0059] In the above vacuum insulation, coupling grooves and coupling protrusions are alternately formed on the side of the vacuum insulation to allow for size adjustment, and the coupling protrusions can be configured to be fitted into the coupling grooves for assembly.

[0060]

[0061] A connecting hole connecting the space formed by the unit vacuum insulation can be further formed on the side wall of the unit vacuum insulation.

[0062]

[0063] The structure may be such that the multilayer high-compression microfoam layer is deposited or adhered to the upper and lower surfaces of the vacuum polymer layer (100).

[0064]

[0065] The above multilayer high-compression microfoam layer is composed of a foaming elastic material and a foaming agent additive that forms air holes, wherein the foaming elastic material is composed of 93% to 98% by weight, and the foaming agent additive may be composed of 2% or more and 7% or less by weight to maintain hardness and form air holes.

[0066]

[0067] The above foamed elastic material is EVA, and can be configured to prevent inter-floor noise by removing external noise or vibration as it passes through a plurality of air holes created by a foaming agent additive of 2 weight percent or more.

[0068]

[0069] For noise prevention, the holes have a size of 0.6 mm or less, and the vacuum polymer layer and the multilayer high-compression microfoam layer can be combined by injection molding without the use of a separate adhesive.

[0070]

[0071] The above multilayer high-compression microfoam layer can be bonded via a physical compression method without using an adhesive to increase the bonding strength with the vacuum polymer layer.

[0072] The inter-floor noise prevention material of the present invention can be manufactured in a modular form to facilitate maintenance after construction and configured with a structure that allows for individual replacement when necessary.

[0073] As explained above, the present invention has the following effects.

[0074] First, by minimizing impact and vibration noise occurring between residential boundaries of a building, particularly between upper and lower floors, it provides a comfortable living environment. Furthermore, it can contribute to energy savings by improving thermal insulation and contribute to environmental protection through material conservation and sustainable design.

[0075]

[0076] Second, the inter-floor soundproofing material for multi-story buildings can effectively block noise and vibration through a combination of a polymer layer maintaining a vacuum state and a multi-layer high-compression micro-foam layer, thereby minimizing discomfort caused by noise generated on the upper floors of multi-story buildings.

[0077]

[0078] Third, the thickness and density of each layer can be adjusted, making it suitable for various building designs. By using flame-retardant materials to ensure fire safety, the safety of the building can be enhanced, and it can be applied to various fields such as residential, commercial, and high-end architecture.

[0079]

[0080] Fourth, it is manufactured in a modular form, making maintenance easy, and only damaged parts can be replaced individually, offering the advantages of both cost-effectiveness and practicality. It can also contribute to improving the living environment of multi-story buildings and reducing stress caused by noise issues.

[0081]

[0082] Fifth, existing inter-floor noise prevention materials are composed of polyurethane foam, which absorbs some of the sound and vibration, but have limitations in complete blocking. Even when composed of vacuum panels, they employ a vacuum structure containing insulating materials such as glass fiber or aerogel inside, so there is a problem where vibration noise still occurs due to vibration transmission through a solid medium. However, in the present invention, a multilayer high-compression micro-foam layer is formed on the upper and lower surfaces of a vacuum polymer layer that maintains a vacuum state, respectively. By maintaining a complete vacuum without a medium inside the vacuum polymer layer, the vacuum state is maintained even under external impact, thereby blocking noise at the source. Furthermore, the multilayer high-compression micro-foam layer protects the surface of the vacuum polymer layer with a high-density structure while simultaneously attenuating noise and vibration to about 1 / 10 to 1 / 20 of the existing level, and significantly improving compressive strength and sound absorption performance.

[0083]

[0084] Sixth, it has excellent thermal insulation and waterproofing effects, and has the advantage of being lightweight, making it easy to transport and handle. Furthermore, by using the method for manufacturing a soundproofing material for inter-floor noise in buildings according to the present invention, such a soundproofing material can be manufactured through a simple process while saving time and costs.

[0085]

[0086] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims.

[0087] FIG. 1 is a flowchart illustrating a method for manufacturing an interlayer noise prevention material according to the present invention.

[0088] FIG. 2 is a perspective view of an interlayer noise prevention material according to a first embodiment of the present invention.

[0089] FIG. 3 is a cross-sectional view of AA in FIG. 2.

[0090] FIG. 4 is a perspective view of an interlayer noise prevention material according to a second embodiment of the present invention.

[0091] FIG. 5 is a cross-sectional view of BB in FIG. 2

[0092] FIGS. 6 to 12 are drawings illustrating the manufacturing process of a vacuum polymer layer in an interlayer noise prevention material according to the present invention,

[0093] FIG. 6 is a drawing illustrating a process of sequentially unwinding a multi-composite layer film wound on a winding roll and forming a tube-shaped multi-composite layer film using a cutting line.

[0094] FIGS. 7 to 10 are drawings illustrating a process of forming a vacuum polymer layer by inserting a honeycomb-structured vacuum insulator into a tubular multi-composite layer film.

[0095] FIG. 11 is a plan view illustrating a process of exhausting air inside a multi-composite layer film using an air intake pipe.

[0096] FIG. 12 is a side view of FIG. 11

[0097] FIG. 13 shows the structure of a multi-composite layer film according to an example of the present invention.

[0098] FIG. 14 shows the structure of a multi-composite layer film according to another example of the present invention.

[0099] FIG. 15 is a perspective view illustrating a vacuum polymer layer according to the present invention.

[0100] FIG. 16 is a plan view of FIG. 15

[0101] FIG. 17 is a plan view illustrating a modular structure.

[0102] Hereinafter, an inter-floor noise prevention material according to a preferred embodiment of the present invention and a method for manufacturing the inter-floor noise prevention material will be described in detail with reference to the attached drawings.

[0103] FIG. 1 is a flowchart illustrating a method for manufacturing an interlayer noise prevention material according to the present invention.

[0104] FIG. 2 is a perspective view of an inter-floor noise prevention material according to a first embodiment of the present invention, FIG. 3 is a cross-sectional view AA of FIG. 2, FIG. 4 is a perspective view of an inter-floor noise prevention material according to a second embodiment of the present invention, and FIG. 5 is a cross-sectional view BB of FIG. 2.

[0105] FIGS. 6 to 12 are drawings illustrating the manufacturing process of a vacuum polymer layer in an interlayer noise prevention material according to the present invention, FIG. 6 is a drawing explaining the process of sequentially unwinding a multi-composite layer film wound on a winding roll to form a tube-shaped multi-composite layer film using a cutting line, FIGS. 7 to 10 are drawings explaining the process of forming a vacuum polymer layer by inserting a honeycomb-structured vacuum insulator into a tube-shaped multi-composite layer film, FIG. 11 is a plan view illustrating the process of discharging air inside the multi-composite layer film using an air intake pipe, and FIG. 12 is a side view of FIG. 11.

[0106] FIG. 13 is the structure of a multi-composite layer film according to one example of the present invention, and FIG. 14 is the structure of a multi-composite layer film according to another example of the present invention.

[0107] FIG. 15 is a perspective view illustrating a vacuum polymer layer according to the present invention, FIG. 16 is a plan view of FIG. 15, and FIG. 17 is a plan view illustrating a modular structure.

[0108] Referring to the drawing above, the method for manufacturing a floor noise prevention material according to the present invention is a method for manufacturing a floor noise prevention material (1)(2) that is installed on a concrete slab of a multi-story building to block noise and vibration generated from the floor of the building.

[0109] The method for manufacturing an interlayer noise prevention material according to the present invention comprises: a first step (S10) of forming a vacuum polymer layer (100); and a second step (S20) of forming a multilayer high-compression micro-foam layer (200) on the upper and lower surfaces of the vacuum polymer layer (100), wherein the multilayer high-compression micro-foam layer (200) protects the upper and lower surfaces of the vacuum polymer layer (100) while blocking external noise and vibration, which is a technical feature.

[0110] In the second step (S20) above, at least one laminated structure is formed in which a multilayer high-compression microfoam layer (200) is formed on the upper and lower surfaces of the vacuum polymer layer (100).

[0111] The interior of the above vacuum polymer layer (100) maintains a complete vacuum without a medium and maintains a vacuum state even against external impact.

[0112] For example, the air inside the vacuum polymer layer (100) is removed to create a vacuum state, thereby preventing noise from being transmitted.

[0113] The internal vacuum of the vacuum polymer layer (100) is, for example, 10 -2 ~10 -3 Maintain a low-temperature sealing state to enable the formation of Tor pressure.

[0114] The above vacuum polymer layer (100) may have an additional UV blocking coating applied to increase durability against external environmental changes, thereby preventing discoloration or damage caused by ultraviolet rays.

[0115] The above multilayer high-compression micro foam layer (200) can improve compression strength and sound absorption performance by protecting the upper and lower surfaces of the vacuum polymer layer (100) while blocking external noise and vibration, and by having a high-density structure.

[0116]

[0117] Hereinafter, an interlayer noise prevention material according to the present invention will be described in detail with reference to FIGS. 2 to 17.

[0118] The inter-floor noise prevention material (1)(2) according to the present invention is installed on the concrete slab of a multi-story building to block noise and vibration generated in the upper floors of the multi-story building.

[0119] The interlayer noise prevention material (1)(2) according to the present invention comprises a vacuum polymer layer (100) that maintains a vacuum state; and a multilayer high-compression microfoam layer (200) formed on the upper and lower surfaces, respectively, of the vacuum polymer layer (100); and the multilayer high-compression microfoam layer (200) is formed in a laminated structure of at least one layer that protects the vacuum polymer layer (100) and effectively blocks noise and vibration.

[0120] For example, as illustrated in FIGS. 2 and 3, the interlayer noise prevention material (1) according to the present invention may be a single-layer laminated structure consisting of a vacuum polymer layer (100) and a multilayer high-compression micro-foam layer (200) formed on the upper and lower surfaces of the vacuum polymer layer (100).

[0121] As illustrated in FIGS. 4 and 5, the interlayer noise prevention material (2) according to the present invention may be a two-stage laminated structure consisting of a vacuum polymer layer (100) and a multilayer high-compression micro-foam layer (200) formed on the upper and lower surfaces of the vacuum polymer layer (100).

[0122] The above laminated structure can be configured such that vacuum polymer layers and multilayer high-compression microfoam layers are alternately laminated to block inter-floor noise in multi-story buildings.

[0123] For example, noise blocking performance can be maximized by stacking multiple layers of alternating vacuum polymer layers and high-compression microfoam layers.

[0124] As shown in the enlarged drawing of FIG. 3, a protective film (F) may be additionally attached to the upper and lower surfaces of the laminated structure to prevent damage during construction.

[0125]

[0126] The above vacuum polymer layer (100) is configured to maintain the interior of the polymer material in a vacuum state to provide a function of absorbing external shocks and blocking noise.

[0127] Preferably, the thickness of the vacuum polymer layer (100) is formed to be 5 mm to 20 mm, thereby providing an optimal noise blocking effect.

[0128] Preferably, the vacuum polymer layer (100) may be configured to prevent discoloration or damage caused by ultraviolet rays by additionally applying a UV blocking coating (not shown) to increase durability against external environmental changes.

[0129] Referring to FIGS. 6 to 12, the vacuum polymer layer (100) may be configured to include: a multi-composite layer film (110) having a tube shape; and a vacuum insulator (120) inserted into the tube of the multi-composite layer film (110) to support the inside of the tube of the film (110) and to form a vacuum space (121) for insulation inside.

[0130] As shown in FIG. 6, the multi-composite layer film wound on the winding roll is sequentially unwound and the multi-composite layer film is cut to a certain length using the cutting line (116).

[0131]

[0132] As shown in FIGS. 11 and 12, a vacuum insulator (120) is inserted into the tube of the multi-composite layer film (110), and then air is discharged through an air intake pipe (P) connected to a vacuum pump (not shown) to discharge the air inside the multi-composite layer film (110), and then the multi-composite layer film (110) is sealed to form a vacuum polymer layer (100).

[0133]

[0134] Referring to FIG. 13, the multi-composite layer film (110) may comprise a metal foil deposition layer (111), a nylon resin layer (112), a TIE adhesive layer (113), an ethylene vinyl alcohol barrier layer (114), a TIE adhesive layer (115), and an innermost heat-sealed layer (116).

[0135]

[0136] Referring to FIG. 14, the multi-composite layer film (110) may comprise: a protective layer (111) that absorbs and disperses external shocks; a barrier layer (112) that is adhered to the lower part of the protective layer (111) and blocks the inflow of external gas or moisture; and a heat-welded layer (113) that is adhered to the lower part of the barrier layer (112) and adheres to the surface of the vacuum insulator (120).

[0137] A flame-retardant coating layer (114) with a flame retardant added can be formed on the upper part of the protective layer (111).

[0138] The flame-retardant coating layer (114) may be formed by coating a composition of 20 to 80 parts by weight of the flame retardant and 20 to 80 parts by weight of a polymer resin and an organic solvent on the upper surface of the protective layer (111).

[0139] The above flame retardant may be composed of one or more substances selected from phosphorus compounds, nitrogen compounds, aluminum hydroxide, and antimony trioxide.

[0140] Preferably, the multi-composite layer film (110) has an oxygen permeability (cc / m 2 .24h.atm); 0, moisture permeability (g / m² 2 .24h.atm); 0, and thermal conductivity (kcal / mh℃) (or W / (m·k); 0.0001 or less.

[0141] Preferably, as shown in FIG. 13, the vacuum insulation (120) is a honeycomb structure in which a plurality of unit vacuum insulations in the shape of a regular hexagonal prism with a hollow formed therein are connected in a continuous manner.

[0142] Preferably, as shown in FIG. 13 and FIG. 14, a connecting hole (H1) connecting the space formed by the unit vacuum insulation can be further formed on the side wall of the unit vacuum insulation.

[0143] Preferably, as shown in FIGS. 15 and 16, a coupling groove (121) and a coupling projection (122) are alternately formed on the side of the vacuum insulation body (120) so as to allow for size adjustment, and the coupling projection (122) can be fitted into the coupling groove (121) to be assembled.

[0144] The above multilayer high-compression fine foam layer (200) is made of polyurethane or polyethylene material and is configured to minimize the transmission of noise by forming a fine foam structure under high compression.

[0145] The above multilayer high-compression micro foam layer (200) can be configured to absorb energy and attenuate noise when noise passes through the micro foam layer by compressing a polyurethane material under high pressure to form a small bubble structure.

[0146] That is, the multilayer high-compression micro-foam layer (200) may be composed of a foaming elastic material and a foaming agent additive that forms a plurality of air holes (not shown), the foaming elastic material may be composed of 93% to 98% by weight, and the foaming agent additive may be composed of 2% or more and 7% or less by weight to maintain hardness and form air holes.

[0147] Preferably, the foamed elastic material is EVA, and noise or vibration generated from the outside is removed as it passes through a plurality of holes created by a foaming agent additive of 2 weight percent or more, thereby more effectively attenuating inter-floor noise.

[0148] For noise prevention, the above holes have a size of 0.6 mm or less, and the vacuum polymer layer (100) and the multilayer high-compression micro foam layer (200) may be combined by injection molding without the use of a separate adhesive.

[0149] Furthermore, the structure may be such that a multilayer high-compression microfoam layer (200) is deposited or bonded to the upper and lower surfaces of the vacuum polymer layer (100).

[0150]

[0151] Furthermore, the multilayer high-compression microfoam layer can be bonded via a physical compression method without using an adhesive to increase the bonding strength with the vacuum polymer layer.

[0152]

[0153] The interlayer noise prevention material of the present invention, as well as the vacuum insulation body, can be manufactured in a modular form (see FIG. 17) to facilitate maintenance after construction and configured to be individually replaceable when necessary.

[0154] Modular type (or modularization) refers to a configuration in which the inter-floor noise prevention material of the present invention is composed of unit noise prevention materials and configured so that these unit noise prevention materials can be easily connected or separated, thereby facilitating maintenance.

[0155]

[0156] Meanwhile, the legal standards for inter-floor noise in multi-unit housing, effective from January 2, 2023, are as shown in Table 1 below.

[0157] Noise Type Measurement Standards Daytime (06:00–22:00) Nighttime (22:00–06:00) Direct Impact Noise 1-Minute Equivalent Noise Level (Lea) 39 dB(A) 34 dB(A) Maximum Noise Level (Lmax) 57 dB(A) 52 dB(A) Airborne Noise 5-Minute Equivalent Noise Level (Lea) 45 dB(A) 40 dB(A)

[0158] As shown in Table 1, inter-floor noise in multi-unit dwellings (e.g., apartments) can be classified into direct impact noise and airborne noise. For reference, the equivalent noise level (Lea) refers to the average noise level over a certain period, and the maximum noise level (Lmax) represents the highest noise level during that period.

[0159]

[0160] Meanwhile, Table 2, which compares the performance of the interlayer noise prevention material (also known as eco-barrier) according to the present invention with that of a conventional panel, is as follows.

[0161] Characteristics Foam panel (conventional product) Vacuum panel (conventional product) Eco barrier (present invention) Sound blocking efficiency Approx. 30–50% Approx. 60–80% Over 95% Vibration blocking effect Low Medium High Durability Excellent Relatively Low Very Excellent Structural complexity Simple Somewhat complex Medium Manufacturing cost Low High Medium Application potential Limited Limited Diverse

[0162] As shown in Table 2, in terms of sound blocking efficiency, vibration blocking efficiency, and durability, the eco barrier of the present invention was confirmed to be over 95%, high, and very excellent.

[0163] Characteristics Foam Panel (Conventional Product) Vacuum Panel (Conventional Product) Eco Barrier (Present Invention) Direct Impact Noise (dB) Approx. 45–55 (dB) Approx. 35–45 (dB) 20 (dB) or less Airborne Noise (dB) Approx. 45–55 (dB) Approx. 30–40 (dB) 15 (dB) or less Noise Attenuation Rate (%) Approx. 20% Approx. 40% 90% or more Vibration Transmission Blocking Partial Reduction Somewhat Complex Complete Blocking (Removal of Medium) Durability Medium Low (Structural Weakening) Very Excellent (Including Protective Layer) Environmental Friendliness Medium Medium High (Material Saving and Sustainability)

[0164] As shown in Table 3, in terms of direct impact noise (daytime), airborne noise (daytime), and noise attenuation rate, the eco barrier of the present invention was confirmed to be 20 (dB) or less, 15 (dB) or less, and 90% or more (reduced to 1 / 10 to 1 / 20 of the level compared to the existing one).

[0165]

[0166] As explained above, the present invention has the following effects.

[0167] First, by minimizing impact and vibration noise occurring between residential boundaries of a building, particularly between upper and lower floors, it provides a comfortable living environment. Furthermore, it can contribute to energy savings by improving thermal insulation and contribute to environmental protection through material conservation and sustainable design.

[0168]

[0169] Second, the inter-floor soundproofing material for multi-story buildings can effectively block noise and vibration through a combination of a polymer layer maintaining a vacuum state and a multi-layer high-compression micro-foam layer, thereby minimizing discomfort caused by noise generated on the upper floors of multi-story buildings.

[0170]

[0171] Third, the thickness and density of each layer can be adjusted, making it suitable for various building designs. By using flame-retardant materials to ensure fire safety, the safety of the building can be enhanced, and it can be applied to various fields such as residential, commercial, and high-end architecture.

[0172]

[0173] Fourth, it is manufactured in a modular form, making maintenance easy, and only damaged parts can be replaced individually, offering the advantages of both cost-effectiveness and practicality. It can also contribute to improving the living environment of multi-story buildings and reducing stress caused by noise issues.

[0174]

[0175] Fifth, existing inter-floor noise prevention materials are composed of polyurethane foam, which absorbs some of the sound and vibration, but have limitations in complete blocking. Even when composed of vacuum panels, they employ a vacuum structure containing insulating materials such as glass fiber or aerogel inside, so there is a problem where vibration noise still occurs due to vibration transmission through a solid medium. However, in the present invention, a multilayer high-compression micro-foam layer is formed on the upper and lower surfaces of a vacuum polymer layer that maintains a vacuum state, respectively. By maintaining a complete vacuum without a medium inside the vacuum polymer layer, the vacuum state is maintained even under external impact, thereby blocking noise at the source. Furthermore, the multilayer high-compression micro-foam layer protects the surface of the vacuum polymer layer with a high-density structure while simultaneously attenuating noise and vibration to about 1 / 10 to 1 / 20 of the existing level, and significantly improving compressive strength and sound absorption performance.

[0176]

[0177] Sixth, it has excellent thermal insulation and waterproofing effects, and has the advantage of being lightweight, making it easy to transport and handle. Furthermore, by using the method for manufacturing inter-floor noise prevention material for buildings according to the present invention, such noise prevention material can be manufactured through a simple process while saving time and costs.

[0178]

[0179] Meanwhile, the present specification and drawings disclose preferred embodiments of the present invention. Although specific terms have been used, they are used merely in a general sense to facilitate the explanation of the technical content of the invention and to aid in understanding the invention, and are not intended to limit the scope of the invention.

[0180] It is obvious to those skilled in the art that, in addition to the embodiments disclosed herein, other variations based on the technical concept of the present invention are possible. For example, in this embodiment, a soundproofing material is installed on the concrete slab of a multi-story building to block noise and vibration generated from the upper floors of the multi-story building; however, it is also possible to install a soundproofing material inside the walls of the building to block noise and vibration generated from outside the walls.

Claims

1. In an inter-floor noise prevention material (1)(2) installed on a concrete slab of a multi-story building to block noise and vibration generated in the upper floors of a multi-story building, A vacuum polymer layer (100) maintaining a vacuum state; and a multilayer high-compression microfoam layer (200) formed respectively on the upper and lower surfaces of the vacuum polymer layer (100); comprising, The above multilayer high-compression micro-foam layer (200) is characterized by being formed with at least one layered structure that protects the vacuum polymer layer (100) and effectively blocks noise and vibration.

2. In Paragraph 1, The above vacuum polymer layer (100) is an interlayer noise prevention material that maintains the interior of the polymer material in a vacuum state to absorb external shocks and block noise.

3. In Paragraph 1, The above multilayer high-compression fine foam layer (200) is made of polyurethane or polyethylene material and is characterized by forming a fine foam structure in a high-compression state to minimize the transmission of noise, thereby forming an interlayer noise prevention material.

4. In Paragraph 3, The above multilayer high-compression micro foam layer (200) is a layered noise prevention material characterized by compressing a polyurethane material at high pressure to form a small bubble structure, thereby absorbing energy when noise passes through the foam layer to reduce noise.

5. In Paragraph 1, The above-described laminated structure is a soundproofing material for inter-floor noise in multi-story buildings, characterized in that the vacuum polymer layer (100) and the multi-layer high-compression micro foam layer (200) are alternately laminated.

6. In Paragraph 1, An interlayer noise prevention material characterized by having a protective film (F) additionally attached to the upper and lower surfaces of the above-described laminated structure to prevent damage during construction.

7. In Paragraph 1, An interlayer noise prevention material characterized by the vacuum polymer layer (100) having a thickness of 5 mm to 20 mm to provide an optimal noise blocking effect.

8. In Paragraph 1, The above vacuum polymer layer (100) is characterized by having an additional UV blocking coating applied to increase durability against external environmental changes, thereby preventing discoloration or damage caused by ultraviolet rays, and is an interlayer noise prevention material.

9. In Paragraph 1, The above vacuum polymer layer (100) A multi-composite layer film (110) having a tube shape; and An interlayer noise prevention material characterized by comprising: a vacuum insulation body (120) inserted into the tube of the multi-composite layer film (110) to support the inside of the tube of the film (110) and forming a vacuum space (121) for insulation inside.

10. In Paragraph 1, The above multi-composite layer film (110) is An interlayer noise prevention material comprising a metal foil deposition layer, a nylon resin layer, a TIE adhesive layer, an ethylene vinyl alcohol barrier layer, a TIE adhesive layer, and an innermost heat-sealed layer.

11. In Paragraph 1, The above multi-composite layer film (110) is An interlayer noise prevention material comprising: a protective layer (111) that absorbs and disperses external shocks; a barrier layer (112) that is adhered to the lower part of the protective layer (111) and blocks the inflow of external gas or moisture; and a heat-welded layer (113) that is adhered to the lower part of the barrier layer (112) and adheres to the surface of the vacuum insulation body (120).

12. In Paragraph 1, An interlayer noise prevention material characterized by having a flame-retardant coating layer (114) with a flame-retardant added formed on the upper part of the protective layer (111).

13. In Paragraph 12, The above flame-retardant coating layer An interlayer noise prevention material characterized by being formed by coating a composition of 20 to 80 parts by weight of the flame retardant and 20 to 80 parts by weight of a polymer resin and an organic solvent on the upper surface of the protective layer.

14. In Paragraph 13, The above flame retardant is an interlayer noise prevention material comprising one or more substances selected from phosphorus compounds, nitrogen compounds, aluminum hydroxide, and antimony trioxide.

15. In Paragraph 11, The above multi-composite layer film (110) is characterized by having an oxygen permeability (cc / m2.24h.atm); 0, a moisture permeability (g / m2.24h.atm); 0, and a thermal conductivity (kcal / mh℃) (or W / (m·k); 0.0001 or less), making it an interlayer noise prevention material.

16. In Paragraph 9, The above vacuum insulation body (120) is characterized by having a honeycomb structure in which a plurality of unit vacuum insulation bodies in the shape of a regular hexagonal prism with a hollow formed therein are continuously connected.

17. In Paragraph 16, An interlayer noise prevention material characterized by having a coupling groove (121) and a coupling projection (122) alternately formed on the side of the vacuum insulation body (120) to allow for size adjustment, and the coupling projection (122) being fitted into the coupling groove (121) to be assembled.

18. In Paragraph 16, An interlayer noise prevention material characterized by further forming a connecting hole (H1) on the side wall of the unit vacuum insulation to connect the space formed by the unit vacuum insulation.

19. In Paragraph 1, An interlayer noise prevention material characterized by a structure in which the multilayer high-compression microfoam layer (200) is deposited or bonded to the upper and lower surfaces of a vacuum polymer layer (100).

20. In Paragraph 1, The above multilayer high-compression micro-foaming layer (200) is It is composed of a foamed elastic material and a foaming agent additive that forms multiple air holes, and An interlayer noise prevention material characterized by the above-mentioned foamed elastic material comprising 93% to 98% by weight, and the above-mentioned foaming agent additive comprising 2% or more and 7% or less by weight to maintain hardness and form the above-mentioned holes.

21. In Paragraph 20, The above-mentioned foamed elastic material is EVA, and the inter-floor noise prevention material is characterized by attenuating inter-floor noise by removing external noise or vibration as it passes through a plurality of holes created by a foaming agent additive of 2 weight percent or more.

22. In Paragraph 20, An interlayer noise prevention material characterized in that, for noise prevention function, the holes have a size of 0.6 mm or less, and the vacuum polymer layer (100) and the multilayer high-compression micro foam layer (200) are combined by injection molding without the use of a separate adhesive.

23. In Paragraph 20, The above multilayer high-compression micro-foam layer (200) is characterized by being bonded through a physical compression method without using an adhesive to increase the bonding strength with the vacuum polymer layer (100), thereby forming an interlayer noise prevention material.

24. In Paragraph 1, An inter-floor noise prevention material characterized by a modular structure that allows for easy maintenance after construction and individual replacement when necessary.

25. A method for manufacturing inter-floor noise prevention material (1)(2) that is installed on a concrete slab of a multi-story building to block noise and vibration generated from the floor of the building, A first step (S10) of forming a vacuum polymer layer (100); and A second step (S20) of forming a multilayer high-compression microfoam layer (200) on the upper and lower surfaces of the vacuum polymer layer (100); wherein A method for manufacturing an interlayer noise prevention material characterized in that the above-described multilayer high-compression micro-foaming layer (200) protects the upper and lower surfaces of the above-described vacuum polymer layer (100) while blocking external noise and vibration.

26. In Paragraph 25, A method for manufacturing an interlayer noise prevention material, characterized in that in the second step (S20) above, at least one laminated structure is formed in which a multilayer high-compression micro-foaming layer (200) is formed on the upper and lower surfaces of the vacuum polymer layer (100).

27. In Paragraph 25, A method for manufacturing an interlayer noise prevention material characterized in that the interior of the vacuum polymer layer (100) maintains a safe vacuum without a medium and maintains a vacuum state even under external impact.

28. In Paragraph 25, A method for manufacturing an interlayer noise prevention material characterized by the above-described multilayer high-compression micro-foaming layer (200) protecting the upper and lower surfaces of the vacuum polymer layer (100) while blocking external noise and vibration, thereby improving compression strength and sound absorption performance with a high-density structure.

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