KR-102963579-B1 - Antibacterial, flame-retardant, anti-slip, and floor noise-reducing eco-friendly flooring manufactured with Hinoki cypress water-based adhesive

Abstract

The present invention relates to a method for manufacturing an eco-friendly flooring material with antibacterial, flame-retardant, anti-slip, and inter-floor noise reduction properties using an eco-friendly adhesive, and to an eco-friendly flooring material utilizing the same. By manufacturing and using an eco-friendly adhesive by mixing cypress sap, extracted from cypress leaves containing the highest amount of phytoncides, with EVA, an eco-friendly adhesive raw material, in a certain ratio, the flooring material itself is enabled to possess antibacterial performance, a function for reducing harmful substances, and a function for improving indoor air quality.

Inventors

• 박철우
• 이호권
• 최재연
• 이종만

Dates

Publication Date

20260512

Application Date

20251126

Claims (5)

1. In a flooring material in which a surface finishing layer (110), an adhesive (120), a water-resistant plywood layer (130), an adhesive (140), and a fabric layer (150) are laminated and bonded in sequence, The adhesive (120, 140) is manufactured to contain 50-60% EVA, 20-30% water, and 10-20% cypress water based on total weight, and The above cypress water is cypress sap that has been homogenized by being dispersed using a dispersion device, and The above fabric layer (150) is manufactured by mixing a high-elasticity material (151) and a fabric core (152) and molding them as a single unit, The above high-elasticity material (151) is molded to wrap around the fabric core (152), and The flooring material is characterized in that the above high-elasticity material (151) is a material including EVA.
2. In claim 1, The above surface finishing layer (110) is manufactured as a single unit by sequentially laminating an embossed high-hardness melamine resin plate (HPL) (111) and kraft paper (112) and applying heat and pressure to enhance wear resistance and durability, and The above-mentioned embossed high-hardness melamine resin plate (HPL) (111) is a flooring material characterized by having a surface layer formed using an embossing technique to prevent slipping.
3. In claim 1 or 2, The above-mentioned waterproof plywood layer (130) is manufactured by applying a flame-retardant liquid (131) to a waterproof plywood (132), and is characterized by having an enhanced flame-retardant function, and is a flooring material.
4. In claim 2, The above-mentioned embossed high-hardness melamine resin plate (HPL) (111) is a flooring material characterized by being manufactured by mixing aluminum oxide powder and flame retardant powder with a melamine resin impregnation layer, thereby enhancing flame retardancy and durability.
5. In claim 1, A flooring material characterized by reducing interlayer noise by utilizing the shock-absorbing function of EVA included in the adhesive (120, 140) and the elastic function of the high-elasticity material (151) together.

Description

Antibacterial, flame-retardant, anti-slip, and inter-floor noise-reducing eco-friendly flooring manufactured with Hinoki cypress water-based adhesive The present invention relates to a method for manufacturing an eco-friendly flooring material that utilizes an eco-friendly adhesive to provide antibacterial, flame-retardant, anti-slip, and interlayer noise reduction properties, and to an eco-friendly flooring material using the same. The types of wooden flooring for indoor construction are as follows: solid wood flooring finished with UV coating, which involves applying a reinforcing paint to the surface layer of the solid wood and curing it with UV light; decorative wood flooring finished with other materials such as melamine resin board (HPL) on top of fiberboard (MDF, HDF) and plywood. This section provides an overview of the current market for interior wooden flooring. Painted solid wood flooring has limited use due to its low abrasion resistance and lower surface strength compared to other finishes like HPL or film, as well as the excessive cost associated with using solid wood. While flooring utilizing fiberboard (MDF, HDF) as the base layer once enjoyed significant demand, its use is gradually declining because the fiberboard is susceptible to moisture, leading to defects after installation. Currently, decorative wood flooring, featuring plywood base layers with improved abrasion resistance and durability, is being adopted in apartments, houses, school classrooms, and commercial spaces. Meanwhile, sick building syndrome is continuously occurring due to interior finishing materials in newly constructed or remodeled buildings. This is believed to be due to the increased use of chemicals in the manufacturing and installation methods of interior finishing materials, as well as the primary use of industrial and general adhesives. Consequently, indoor air quality is deteriorating and having adverse effects on the human body. Therefore, in order to improve and enhance indoor air quality, it has become necessary to develop eco-friendly adhesives used in the manufacturing of interior finishing materials and to develop eco-friendly interior finishing materials utilizing these adhesives. This section examines the problems associated with conventional wooden flooring. While the use of wood interior finishing materials is increasing due to their eco-friendly nature, the thinness of wood poses a disadvantage in that it is vulnerable to fire, highlighting the need for methods to address this issue. Recently, frequent fires in townhouses and apartments have led to stricter fire-retardant and flame-retardant performance requirements for building interior finishing materials. Furthermore, the smooth surface of the HPL (High-Performance Laminate) forming the surface layer of the flooring raises concerns about slipping accidents involving children and residents. Consequently, anti-slip surface treatment technology is required to mitigate these risks. The necessity of flooring materials capable of reducing inter-floor noise is as follows: Recently, inter-floor noise in townhouses and apartments has been a persistent social issue, leading to complaints and even violent incidents. While heavy impact noise—such as the thumping sounds caused by people running or heavy objects falling—is primarily determined by the floor structure, light impact noise—compared to the sound of light objects falling, footsteps, or chairs being dragged—can be reduced by flooring materials. Accordingly, flooring materials capable of reducing inter-floor noise are required. Let us examine the prior art literature: (Patent Document 1) is a prior patent document held by the applicant. The indoor flooring material (10) comprises a surface finishing layer (11), a first adhesive layer (13), a core layer (15), a second adhesive layer (13'), and a wood-based board (17). The core layer (15) is manufactured by impregnating a fabric (151) with a liquid PVC gel, and is manufactured to form PVC gel layers (152, 152') on the upper and lower parts of the fabric (151). The liquid PVC gel contains activated carbon or copper slag having an antibacterial function. A water-based adhesive capable of bonding to a PVC gel layer (152, 152') is used for the first adhesive layer (13) and the second adhesive layer (13'). (See identification numbers [0037], [0038], [0042]) (Patent Document 2) relates to a method for manufacturing an antibacterial flooring material containing Houttuynia cordata. It describes using a mixture of Houttuynia cordata powder and melamine resin. (See abstract) (Patent Document 3) describes a method for constructing a floor using an anti-slip flooring material. It describes using polyolefin powder coated with silane. (See abstract) FIG. 1a is a schematic drawing illustrating an eco-friendly flooring material according to the present invention. FIG. 1b is a diagram illustrating a method for manufacturing an eco-friendly flooring material according to t