How to install floor covering sheets

By applying gypsum-based putty, smoothing, and using a urethane caulking agent to seal joints, the method addresses peeling issues of ultra-thin floor covering sheets, ensuring durability and environmental sustainability in installation.

JP7745855B2Active Publication Date: 2025-09-30NAOS TECH CO LTD +1
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Patent Information

Application Number
JP2023151093
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-09-19
Publication Date
2025-09-30
Estimated Expiration
2039-11-15

AI Technical Summary

Technical Problem

Existing floor covering sheets, especially ultra-thin ones, tend to peel from joints and the existing floor surface during installation, leading to potential tearing and material waste due to their thinness.

Method used

A method involving applying gypsum-based putty to the existing floor, smoothing it with sandpaper, adhering a 0.2 to 0.5 mm thick floor covering sheet with an acrylic-rosin adhesive, and sealing joints with a urethane caulking agent to enhance peel resistance.

Benefits of technology

The method provides excellent peel resistance, maintains the existing living environment, reduces material waste, and conserves building materials by preventing sheet peeling and joint lifting.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a construction method of a floor overwrapping sheet without changing existing dwelling environment, capable of saving building material to be used and reducing waste in building material exchange and having an excellent peeling resistance.SOLUTION: A construction method of a floor overwrapping sheet of the invention for adhering the floor overwrapping sheet to an existing floor surface and refurbishing comprises a first process of applying gypsum or gypsum putty on the existing floor surface before adhering the floor overwrapping sheet, and drying the gypsum or the gypsum putty applied on the existing floor surface, in which an acrylic adhesive agent is applied on a back surface of the floor overwrapping sheet, a second process of polishing and smoothing the existing floor surface and the dried gypsum or the gypsum putty, a third process of adhering the floor overwrapping sheet to the existing floor surface, and a fourth process of sealing a joint of the adhered floor overwrapping sheets with a urethane caulking agent.SELECTED DRAWING: Figure 2
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Description

[Technical Field]

[0001] The present invention relates to a method for installing a floor covering sheet, and more particularly to the installation of a floor covering sheet in floor renovation work. [Background technology]

[0002] In floor renovation work, floor covering sheets can be easily installed by simply laying them over the existing floor, eliminating the need to remove existing flooring, reducing the amount of waste material and making it known as an excellent construction method in terms of construction time, cost and the environment.

[0003] When applying a floor covering sheet to existing flooring, veneer flooring, cushion flooring, P-tiles, floor tiles, etc., there is a problem that the floor surface becomes higher by the thickness of the floor covering sheet, creating a step and causing a slight change to the living environment. On the other hand, the thinner the floor covering sheet, the better it is to make it as thin as possible, as it can be installed without changing the existing living environment, and it also saves on building materials and reduces waste when replacing building materials.

[0004] However, if the floor covering sheet is too thin, there is a problem that the sheet is prone to tearing and peeling. Although it is possible to make the sheet less likely to peel from the torn area by increasing the durability of the floor covering sheet, there is still a problem that the floor covering sheet can peel from the joints between other floor covering sheets, or between the floor covering sheet and the existing floor.

[0005] Patent Document 1 discloses a floor covering sheet. Although it is very easy to install, Patent Document 1 does not mention the thickness of the sheet. However, as mentioned above, when using a floor covering sheet like that in Patent Document 1, there are problems such as the sheets easily peeling off from the joints between the sheets and from the existing floor surface. (Patent Document 1) [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-355331 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention was invented in consideration of the above problems, and aims to provide a method for installing floor covering sheets that has excellent peel resistance at joint surfaces, etc., particularly in floor renovation work using ultra-thin floor covering sheets. [Means for solving the problem]

[0008] The method for installing the floor covering sheet of the present invention is the same as that of the existing Hardwood flooring, veneer flooring, cushion flooring, P-tiles, floor tiles (hereinafter referred to as "existing floor surface"). Attach the floor covering sheet to the In the method for forming a floor covering sheet, the thickness of the floor covering sheet is 0.2 to 0.5 mm, and an acrylic adhesive is applied to the back surface. Before attaching the floor covering sheet, gypsum or gypsum-based putty is applied to the existing floor surface, and the gypsum or gypsum-based putty applied to the existing floor surface is then applied to the existing floor surface. A first step of drying the gypsum-based putty, a second step of polishing the existing floor surface and the dried gypsum or gypsum-based putty to make them smooth, and a second step of applying the floor covering sheet to the existing floor surface. and a fourth step of sealing the joints between the attached floor covering sheets with a urethane caulking agent.

[0009] The method for applying a floor covering sheet of the present invention is characterized in that the acrylic adhesive is an acrylic-rosin adhesive. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a method for installing floor covering sheets with excellent peel resistance, which does not change the existing living environment, saves on building materials used, and reduces waste when building materials are replaced. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing an example of construction in Reference Example 1 of the present invention. [Figure 2] FIG. 2 is a diagram showing an example of construction in Example 1 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] The method for applying the floor covering sheet of the present invention will be described below. [Example]

[0013] (Reference example 1) Figure 1 shows a first example of a method for installing a floor covering sheet according to the present invention. Figure 1(a) shows the condition before installation. In this example, the existing floor surface is veneer flooring 51, 52, 53, and 55, and there are several scratches and dents on the deteriorated floor surface.

[0014] (First step) In the first step, gypsum putty 21, 22 is applied to the existing floor surface, for example, to the base flooring that has scratches and dents and is deteriorated. After the putty is applied, it is allowed to dry (Fig. 1(b)). In this case, the gypsum-based putty used may be gypsum.

[0015] (Second step) Since gypsum putty or gypsum increases in volume after drying, the existing floor surface and the floor surface to which the dried gypsum or gypsum putty has been applied should be sanded with sandpaper to make the floor surface smooth. First, the entire existing floor is sanded with #60 to #100 sandpaper. Next, the floor surface that has been coated with dried plaster or plaster-based putty is sanded with #180 to #240 sandpaper in areas where the putty is thick, and with #400 sandpaper in areas where the putty is thin, and then finished by sanding with #600 sandpaper (Figure 1(c)). This polishing process removes any existing coatings on the floor and improves the adhesive strength.

[0016] (Third step) A 0.2 to 0.5 mm thick floor covering sheet 11 is attached to the existing floor surface (Figure 1(d)). The back of the floor covering sheet is coated with an acrylic adhesive or an acrylic-rosin adhesive. Acrylic adhesives and acrylic-rosin adhesives have high adhesive strength, but can be easily removed without damaging the floor by using a release agent such as methylcyclohexane, making them very easy to install. After the floor covering sheet has been applied, if there are any joints in the existing floor surface, a cutter is used to cut off the excess sheet to fit the joints, and a scraper is used to create a neat joint (Figure 1(e)).

[0017] (Fourth step) A urethane-based caulking agent is injected into the joints 41, 42, 43 between the floor covering sheets 11, 12, 13, 14 and allowed to dry (Fig. 1(f)).

[0018] For example, if an acrylic caulking agent is used here, the volume of the caulking agent will shrink, and if a very thin floor covering sheet is used, the volume of the caulking agents 41, 42, and 43 injected into the joints will also decrease if an acrylic caulking agent is used, causing the joints to lift up and the floor covering sheet to peel off.

[0019] In contrast, when a urethane-based caulking agent is used, the volume of the caulking agent does not shrink and no tensile stress is applied to the joints or joints, so the caulking agent will not peel off.

[0020] Example 1 Figure 2 shows a first embodiment of the method for installing a floor covering sheet of the present invention. Figure 2(a) shows the state before installation. In this example, the existing floor surface is cushion flooring 61, and there are some scratches and dents on the deteriorated floor surface.

[0021] (First step) In the first step, gypsum putty 21, 22 is applied to the existing floor surface, for example, to the base flooring that has scratches and dents and is deteriorated. After the putty is applied, it is allowed to dry (Fig. 2(b)). In this case, the gypsum-based putty used may be gypsum.

[0022] (Second step) Since gypsum putty or gypsum increases in volume after drying, the existing floor surface and the floor surface to which the dried gypsum or gypsum putty has been applied should be sanded with sandpaper to make the floor surface smooth. First, the entire existing floor is sanded with #60 to #100 sandpaper. Next, the floor surface that has been coated with dried plaster or plaster-based putty is sanded with #180 to #240 sandpaper in areas where the putty is thick, and with #400 sandpaper in areas where the putty is thin, and then finished by sanding with #600 sandpaper (Figure 2(c)). This polishing process removes any existing coatings on the floor and improves the adhesive strength.

[0023] (Third step) A floor covering sheet 11 with a thickness of 0.2 to 0.5 mm is attached on top of the existing floor surface (Figure 2(d)). The backside of the floor covering sheet 11 is coated with an acrylic adhesive or an acrylic-rosin adhesive. Acrylic adhesives and acrylic-rosin adhesives have high adhesive strength, but can be easily removed without damaging the floor by using a release agent such as methylcyclohexane, making them very easy to install.

[0024] (Fourth step) A urethane caulking agent is poured into the joint 31 between the floor covering sheets 11 and 12 and allowed to dry (FIG. 2(e)).

[0025] For example, if an acrylic caulking agent is used, the volume of the caulking agent will shrink, and if a very thin floor covering sheet is used, tensile stress will be applied to the floor covering sheet and the caulking agent, destroying the joints between the floor covering sheets, and in the worst case scenario, the floor covering sheet will peel off.

[0026] In contrast, when a urethane-based caulking agent is used, the volume of the caulking agent does not shrink and no tensile stress is applied to the joints or joints, so the caulking agent will not peel off. [Industrial Applicability]

[0027] According to the present invention, it is possible to provide a method for installing floor covering sheets with excellent peel resistance, which does not change the existing living environment, saves on building materials used, and reduces waste when building materials are replaced. [Explanation of symbols]

[0028] 11, 12, 13, 14 Floor covering sheet 21, 22 Putty 31, 41, 42, 43 Caulking agent (sheet joints) 51 Veneer flooring (existing floor) 61 Cushion flooring (existing floor)

Claims

1. In a construction method for renovating existing flooring, veneer flooring, cushion flooring, P-tiles, or floor tiles (hereinafter referred to as "existing floor surface") by applying a floor covering sheet, The thickness of the floor covering sheet is 0.2 to 0.5 mm, and the back surface has an acrylic adhesive. a first step of applying gypsum or gypsum-based putty to the existing floor surface and drying the gypsum or gypsum-based putty applied to the existing floor surface before attaching the floor covering sheet; a second step of sanding the existing floor surface and the dried gypsum or gypsum-based putty to make them smooth; a third step of attaching the floor covering sheet to the existing floor surface; A method for installing floor covering sheets, characterized in that it comprises a fourth step of sealing the joints between the attached floor covering sheets with a urethane-based caulking agent.

2. 2. The method for applying a floor covering sheet according to claim 1, wherein the acrylic adhesive is an acrylic-rosin adhesive.

3. The method for installing a floor covering sheet according to claim 1, characterized in that the entire existing floor surface is sanded with #60 to #100 sandpaper. Next, the floor surface to which dried plaster or plaster-based putty has been applied is sanded with #180 to #240 sandpaper in areas where the putty is thick and with #400 sandpaper in areas where the putty is thin, and then finished by sanding with #600 sandpaper.

Citation Information

Patent Citations

  • Flooring sheet and method for installing the same

    JP2001355331A

  • Floating interior-finishing structure of building

    JP2003172019A

  • Finishing material, finishing surface construction method, floor, wall and reentrant part of wall and floor

    JP2005256362A

  • Method for partially repairing floor material for flooring of building

    JP2012062729A

  • Adhesive sheet for floor, and construction method therefor

    JP2012149430A