Simple-installation flooring material

Abstract

To provide a simple-installation flooring material capable of suppressing a reduction in adhesive strength due to plasticizer migration over time when the flooring material is simply installed using a double-sided tape.SOLUTION: A simple-installation flooring material 5 of the present invention comprises a resin layer 1 containing a plasticizer, a plasticizer prevention layer 2, and a double-sided tape 3, in this order.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a flooring material that can be easily installed by laminating a double-sided tape onto a resin layer containing a plasticizer. [Background technology]

[0002] Traditionally, the most common method for installing flooring materials is to use adhesive to bond them to the base, but after applying the adhesive, it is necessary to leave it for the adhesive to develop, which makes installation time-consuming. In addition, adhesive installations have a high adhesive strength, making them difficult to remove, and often leave adhesive residue on the base. As the unevenness of the remaining adhesive affects the surface of the new flooring to be installed, it was necessary to treat the base to make it smooth before installation.

[0003] Another application method that does not use adhesives is to use double-sided tape (see, for example, Patent Document 1). Application methods using double-sided tape do not require any standing time and are easier to peel off than adhesives, so they can shorten the work time. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-131870 Summary of the Invention [Problem to be solved by the invention]

[0005] When using double-sided tape for installation, some of the tape may remain on the substrate when it is removed for positioning adjustments, etc. Also, over time, plasticizers migrate from the flooring material to the double-sided tape, reducing its adhesive strength. Furthermore, the migration of plasticizers can cause problems such as peeling at the interface between the flooring material and the double-sided tape, or between the double-sided tape and the substrate.

[0006] SUMMARY OF THE INVENTION The present invention is intended to solve the above problems and has as its object to provide an easily applied flooring material that allows for easy application and maintains sufficient adhesive strength even after the passage of time. [Means for solving the problem]

[0007] The means adopted by the present invention to achieve the above object is to provide a plasticizer-blocking layer between the plasticizer-containing resin layer of the flooring material and the double-sided tape. That is, it is an easy-to-install flooring material that is made by laminating a resin layer containing a plasticizer, a plasticizer-blocking layer, and a double-sided tape in this order.

[0008] The plasticizer-containing resin layer preferably contains vinyl chloride resin or rubber.The thickness of the plasticizer-blocking layer is preferably 1 to 150 μm.

[0009] Furthermore, it is preferable that the easy-to-install flooring material has a ratio (F / G) of the resin layer side peel strength (F) to the substrate side peel strength (G) after fixing to the substrate with the double-sided tape of 1.1 to 10.0. [Effects of the Invention]

[0010] According to the present invention, simple installation using double-sided tape is possible, and when re-applying flooring during renovation, it is possible to prevent a decrease in adhesive strength at the interface between the double-sided tape and the plasticizer-preventing layer laminated on the plasticizer-containing resin layer. Therefore, when peeling off, the interface between the plasticizer-preventing layer laminated on the plasticizer-containing resin layer and the double-sided tape does not peel off, so no double-sided tape remains on the substrate. This eliminates the labor required to remove the double-sided tape remaining on the substrate before installing new flooring. [Brief explanation of the drawings]

[0011] [Figure 1] Cross section of easy-to-install flooring [Figure 2] Cross-section of the simple flooring material after installation [Figure 3] Schematic diagram of adhesive strength test [Figure 4]Schematic diagram of resin layer side peel strength [Figure 5] Schematic diagram of base side peel strength [Figure 6] Structural example of a resin layer containing a plasticizer [Figure 7] Cross-section of conventional easy-to-install flooring DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0013] The easy-to-install flooring material of the present invention comprises a laminate including a plasticizer-containing resin layer and a plasticizer-preventing layer, and a double-sided tape laminated thereon. The plasticizer-containing resin layer contains at least one thermoplastic resin or rubber selected from the group consisting of vinyl chloride resins such as vinyl chloride resins and vinyl chloride copolymers, chlorinated polyethylene, and acrylic resins, synthetic rubbers such as butyl rubber, ethylene propylene rubber, acrylonitrile butadiene rubber, acrylic rubber, and chloroprene rubber, and natural rubber. Two or more of these thermoplastic resins or rubbers may also be used in combination.

[0014] The plasticizer used in the present invention is added for the purpose of softening the resin layer containing the plasticizer and improving its processability, etc. Examples of the plasticizer that can be used include phthalate ester plasticizers, polyester plasticizers, sulfonate ester plasticizers, phosphate ester plasticizers, adipate ester plasticizers, epoxy plasticizers, etc. Among these, polyester plasticizers are preferred, and polyester plasticizers that are polycondensates of aliphatic dibasic acids and diols are more preferred. Examples of the aliphatic dibasic acid of the polyester plasticizer include succinic acid, maleic acid, fumaric acid, glutamic acid, adipic acid, azelaic acid, sebacic acid, and dodecanedicarboxylic acid. Examples of the diol include 1,2-propylene glycol, 1,2-butanediol, 1,3-butanediol, 2-methyl-1,3-propanediol, neopentyl glycol, 3-methyl-1,5-pentanediol, 2,2-diethyl-1,3-propanediol, 2,2,4-trimethyl-1,3-pentanediol, 2-ethyl-1,3-hexanediol, 2-butyl-2-ethyl-1,3-propanediol, 2-methyl-1,8-octanediol, and 1,12-octadecanediol. These plasticizers can be used alone or in combination of two or more kinds.

[0015] Although there are no particular restrictions on the amount of plasticizer added, it is preferable to add 5 to 100 parts by weight, and more preferably 20 to 80 parts by weight, of the plasticizer per 100 parts by weight of the total amount of the thermoplastic resin or rubber. When multiple plasticizers are used, it is preferable that the total amount of the various plasticizers added is within the above-mentioned range.

[0016] In addition to the plasticizer, various compounding agents can be added to the plasticizer-containing resin layer, such as stabilizers, fillers, colorants, flame retardants, ultraviolet absorbers, processing aids, antistatic agents, antibacterial agents, and antifungal agents.

[0017] The shape of the resin layer containing the plasticizer can be a long sheet or a tile, and the type can be a single layer or a multi-layer consisting of, for example, an upper layer and a lower layer, but there is no particular limitation. The resin layer containing the plasticizer may also be composed of multiple layers, and as long as some of the multiple layers contain a plasticizer, there may be a layer that does not contain a plasticizer. Furthermore, the resin layer may have a substrate made of a woven or nonwoven fabric such as glass fiber or polyester fiber.

[0018] A substrate can be laminated onto the plasticizer-containing resin layer to reduce shrinkage due to heating, etc. The substrate can be a woven or nonwoven fabric made of polyester fiber or glass fiber. There are no restrictions on the position of the substrate; as shown in Figure 6, it can be laminated below the lower layer (6-1), between the upper and lower layers (6-2), or inside the lower layer (6-3).

[0019] The plasticizer prevention layer forms a laminate together with the plasticizer-containing resin layer and is provided to prevent the plasticizer from migrating from the plasticizer-containing resin layer to the double-sided tape. A layer made of a crosslinked polymer is suitable as the plasticizer prevention layer, and in particular, a coating film formed from an ultraviolet-curable paint, an electron-beam-curable paint, or the like, which can form a crosslinked polymer layer by irradiating with ultraviolet rays or electron beams, is preferred. Furthermore, if necessary, a primer may be applied to the resin layer before laminating the plasticizer prevention layer on the plasticizer-containing resin layer.

[0020] UV-curable paints, electron beam-curable paints, etc. contain reactive oligomers and monomers as essential components, and UV-curable paints contain photopolymerization initiators such as hydroxyacetophenone, aminoacetophenone, benzoin, benzoin ether, benzil ketal, benzophenone, thioxanthone, phosphine oxide, glyoxyester, and oxyacetic acid ester. They may also contain inorganic fillers as matting agents or anti-settling agents. Furthermore, these paints are essentially solvent-free. Oligomers are polymers with a repeating number of monomers of 2 to 20, and are also called prepolymers. Oligomers have 2 to 6 reactive double bonds at the end and exist in a wide range of states, from low-viscosity liquids to semi-solids. Typical oligomers include urethane acrylate, epoxy acrylate, and polyester acrylate. Monomers include monofunctional monomers with one reactive double bond, difunctional monomers with two, and polyfunctional monomers with three or more reactive double bonds, and various acrylate monomers can be used. There are no particular limitations on the inorganic fillers added to paints as matting agents or anti-settling agents, and common fillers can be used. Examples include calcium carbonate, silica, talc, mica, clay, diatomaceous earth, alumina, titanium oxide, magnesium hydroxide, zinc oxide, calcium silicate, and aluminum hydroxide, which can be used alone or in combination. Calcium carbonate and silica are preferred from the standpoints of cost and availability.

[0021] When a paint containing the above-mentioned inorganic fillers is used to create a plasticizer-blocking layer, the plasticizer migrating from the plasticizer-containing resin layer is adsorbed by the inorganic filler contained in the plasticizer-blocking layer, which is expected to have the effect of delaying the migration of the plasticizer. On the other hand, some inorganic fillers may reduce the adhesive strength between the adhesive of the double-sided tape and the plasticizer-blocking layer. In such cases, it is preferable to use a glossy paint that contains almost no inorganic filler. Therefore, the addition of inorganic fillers to the paint must be designed by taking into account the balance between these two factors.

[0022] Various compounding agents can be added to ultraviolet curing paints, electron beam curing paints, etc. For example, light stabilizers, fillers, flame retardants, antistatic agents, antibacterial agents, antifungal agents, etc. can be added as needed.

[0023] The thickness of the plasticizer prevention layer is preferably 1 to 150 μm, and more preferably 50 to 100 μm. If it is less than 1 μm, the plasticizer prevention effect will not be sufficient, and if it is thicker than 150 μm, cracks may occur during processing or application, and the plasticizer prevention effect may not be achieved.

[0024] There are no particular restrictions on the adhesive used for the double-sided tape, and common adhesives can be used. Examples include rubber-based, acrylic-based, and silicone-based adhesives. The substrate can be a nonwoven fabric, film, foam, or Japanese paper. Although there are no particular restrictions, a film substrate is preferred because it is less likely to break. There are no particular limitations on the type or presence of a release liner to protect the adhesive surface of the double-sided tape, and examples of the type include paper and film types.

[0025] The double-sided tape may be composed of adhesives consisting of the same components on the resin layer side (laminate side) and the base side, but in order to ensure a difference in peel strength between the resin layer side (laminate side) and the base side so that no double-sided tape remains on the base when the easy-to-install flooring material is peeled off from the base, it is possible to use adhesives consisting of different components on the resin layer side (laminate side) and the base side.

[0026] The resin layer side peel strength (F) refers to the peel strength measured in the peel test shown in Figure 4. After a laminate consisting of a plasticizer-containing resin layer and a plasticizer-blocking layer is fixed to a substrate with double-sided tape, i.e., after fixing an easy-to-install flooring material to the substrate, the laminate consisting of a plasticizer-containing resin layer and a plasticizer-blocking layer is peeled at a 90° angle at interface A between the double-sided tape and the substrate. The substrate side peel strength (G) refers to the peel strength measured in the peel test shown in Figure 5. After a laminate consisting of a plasticizer-containing resin layer and a plasticizer-blocking layer is fixed to a substrate with double-sided tape, i.e., after fixing an easy-to-install flooring material to the substrate, the laminate is peeled at a 90° angle at interface B between the substrate and the double-sided tape, as shown in Figure 5.

[0027] There are no particular restrictions on the peel strength of the substrate, but if the peel strength of the substrate is too low, problems such as peeling or shifting from the substrate may occur during use. JIS A 5536 "Adhesives for Floor Finishing Materials" specifies that the peel strength of acrylic adhesives must be 10N / 25mm or more (peel speed 200mm / min).

[0028] Removing and reapplying a simple flooring material to adjust its position during temporary installation is called repositioning, while the ability to remove and reapply it is called repositionability. During temporary installation, it is preferable that the peel strength of the substrate is not too high so that it can be easily removed, and that after the position is determined and the actual installation is completed, it exhibits a certain level of strength to prevent problems such as peeling from the substrate or shifting. There are no particular restrictions on the peel strength of the substrate for repositioning, but it is preferable that it be 10 N / 25 mm or more after final application. It is also preferable that no adhesive remains on the substrate during temporary application or final application.

[0029] If double-sided tape remains on the base when repositioning, the film cannot be repositioned, so it is preferable that the resin layer side peel strength (F) is higher than the base side peel strength (G), and the lower limit of the ratio (F / G) of the resin layer side peel strength (F) to the base side peel strength (G) is preferably 1.1. To increase the ratio (F / G) of the resin layer-side peel strength (F) to the substrate-side peel strength (G), it is necessary to increase the resin layer-side peel strength (F) or decrease the substrate-side peel strength (G). While there is no upper limit to the resin layer-side peel strength (F), the amount of crosslinking agent in the adhesive of the double-sided tape may be reduced to increase it. In this case, the resin layer-side peel strength (F) increases, but the holding power decreases, which may lead to slippage between the double-sided tape and the laminate after application, resulting in poor application. Therefore, it is preferable that the resin layer-side peel strength (F) is not too high. A low substrate-side peel strength (G) may cause problems such as peeling or slippage between the substrate and the double-sided tape during use, so it is preferable to achieve a certain level of strength. Therefore, the upper limit of the ratio (F / G) of the resin layer-side peel strength (F) to the substrate-side peel strength (G) is preferably 10.0, and more preferably 7.0. In order to prevent double-sided tape from remaining on the substrate during repairs, it is preferable that the resin layer side peel strength (F) be higher than the substrate side peel strength (G), and therefore it is preferable that the ratio (F / G) of the resin layer side peel strength (F) to the substrate side peel strength (G) remains between 1.1 and 10.0 even after the passage of time. In the examples described below, the strength ratio (F / G) between the initial peel strength on the resin layer side (F) and the peel strength on the base side (G) is evaluated assuming the time of repositioning, and the strength ratio (F / G) after accelerated heating is evaluated assuming the time of repair.

[0030] Of the surfaces between the double-sided tape 3 and the laminate 4 in Figure 1, the surface on the laminate side to which the double-sided tape is attached, i.e., the surface of the plasticizer-preventing layer 2 facing the double-sided tape 3, is referred to as the adherend surface of the double-sided tape. There are no particular restrictions on the surface roughness (Ra) of the adherend surface, but Ra is preferably less than 5 μm, and more preferably 1 μm or less. Furthermore, Ra is preferably 0.3 to 1 μm. When a woven fabric substrate is laminated on a resin layer containing a plasticizer, the unevenness of the woven fabric may affect the adherend surface, increasing the surface roughness. If the surface roughness increases, the double-sided tape may not adhere well to the laminate, potentially reducing the resin layer side peel strength (F). The surface roughness can be reduced by laminating a plasticizer prevention layer, but if it is too small, the anchor effect will not be exerted and the resin layer side peel strength (F) may be reduced. [Example]

[0031] The present invention will be described in detail below with reference to examples, but the present invention is not limited to the following examples.

[0032] <Creation of Laminate> [Example 1] The upper layer was 1 mm thick, the lower layer was 1 mm thick, and a woven fabric substrate was laminated inside the lower layer, and a 2.0 mm thick resin layer containing a plasticizer was used. An acrylic matte UV-curable paint was applied to the underside of the plasticizer-containing resin layer cut to A4 size using a 15 μm bar coater. This was then irradiated with UV light at 365 nm with an integrated light dose of 300 to 500 mJ / cm. 2 After curing, it was confirmed with a digital microscope that the thickness of the UV-curable coating was 15 μm. [Example 2] A laminate was prepared in the same manner as in Example 1, except that the ultraviolet curable coating material was applied using a 50 μm bar coater. [Example 3] The ultraviolet curable coating was applied using a spacer and a glass rod so that the thickness of the coating was 150 μm. A laminate was produced in the same manner as in Example 1 except for the coating method.

[0033] [Comparative Example] The comparative example shows the results of a test in which no ultraviolet curable coating material was laminated, but double-sided tape was attached to the lower layer of the plasticizer-containing resin layer.

[0034] <Initial adhesive strength> A 25mm x 200mm piece of double-sided tape (acrylic adhesive, film substrate) was applied to the surface of the anti-plasticizer layer of the laminate, and then cured at 21°C for at least 24 hours. The laminate and double-sided tape were peeled off approximately 50mm from one end, and then fixed with the upper and lower chucks of a peel tester so that the laminate and double-sided tape were at a 180° angle. While maintaining the 180° angle, the tape was pulled at a rate of 50mm / min, and peeled to 25mm, 40mm, 55mm, 70mm, and 85mm, and the average of the measurements at five points was taken as the adhesive strength.

[0035] <Adhesive strength after accelerated heating> After applying double-sided tape to the laminate using the method described above, the laminate was heat-cured in an oven at 60°C for 4 weeks. After heat curing, the laminate was cured for 24 hours at 21°C. After curing, the laminate was cut into 30 mm widths in the same manner as described above, and a peel test was carried out using a peel tester.

[0036] <Confirming the effect of preventing plasticizers> The retention rate of adhesive strength after accelerated heating relative to the initial adhesive strength was calculated using the following formula, and the results are shown in Table 1. Retention rate [%] = (adhesive strength after heating) / initial adhesive strength) x 100

[0037] [Table 1]

[0038] Table 1 shows that in the easy-to-install floor materials of Examples 1 to 3, which have a plasticizer-blocking layer, the adhesive strength retention rate at the interface between the laminate and the double-sided tape is higher than in Comparative Example 1, which does not have a plasticizer-blocking layer, and no decrease in adhesive strength occurs. Note that the adhesive strength retention rate is greater than 100% in Examples 1 to 3, which is thought to be due to improved adhesion between the coating of the plasticizer-blocking layer and the double-sided tape in the early stages of accelerated heating.

[0039] [Example 4] The same plasticizer-containing resin layer as in Example 1 was used. An acrylic glossy UV-curable paint was applied to the lower layer of the plasticizer-containing resin layer cut to A4 size using a 50 μm bar coater. This was then irradiated with UV light with an integrated light dose of 550 to 1000 mJ / cm at 365 nm. 2 A 25mm x 200mm piece of double-sided tape (acrylic adhesive, PET film substrate) was applied to the surface of the anti-plasticizer layer of the laminate with a 5kg roller, and the laminate was left to cure at 21°C for at least 16 hours to create an easy-to-install flooring material. [Example 5] An easy-to-apply flooring material was prepared in the same manner as in Example 4, except that the ultraviolet curing paint was applied using a spacer and a glass rod so that the thickness was 100 μm. [Example 6] The UV-curable coating was applied using a spacer and a glass rod so that the thickness was 100 μm. This was then irradiated with a UV irradiator with an integrated light intensity of 300 to 500 mJ / cm at 365 nm. 2 An easy-to-apply flooring material was prepared in the same manner as in Example 4, except for the application method and the application method. [Example 7] An easy-to-apply flooring material was prepared in the same manner as in Example 4, except that the ultraviolet curable paint was applied using a spacer and a glass rod so that the thickness was 150 μm.

[0040] <Preparing the test specimen> The easy-to-install flooring materials of Examples 4 to 7 and the easy-to-install flooring material of the comparative example (which does not have a UV-curable paint layer on top, but has double-sided tape attached to the bottom layer of a resin layer containing the same plasticizer as in Example 1) were cut into 30 mm x 220 mm pieces and used as test specimens. <Measurement of initial peel strength of resin layer side> The test specimen was attached to a SUS plate and pressed with a 5 kg roller 10 times. The test specimen was then cured at 21°C for 24 hours. The SUS plate was fixed to a peel tester, and the laminate and double-sided tape were peeled for 50 mm or more. One end of the laminate was then gripped with an upper chuck and fixed at a 90° angle. Referring to JIS Z 0237, the laminate was pulled at a speed of 300 mm / min and peeled up to 85 mm. The average of five measurements was taken as the resin layer side peel strength. For the comparative examples, the resin layer was peeled from the double-sided tape and measured in the same manner as in the examples to determine the resin layer side peel strength.

[0041] <Accelerated heat test for resin layer peel strength> After attaching the test specimen to a SUS plate using the method described above, it was heat-cured in an oven at 60°C. After heat curing, it was cured at 21°C for 24 hours. After curing, a 90° peel test was carried out in the same manner as described above. The test was carried out for a maximum of 4 weeks, with heat curing periods of one week each.

[0042] <Measurement of initial peel strength on the substrate side> A 90° peel test was carried out in the same manner as in measuring the initial peel strength of the resin layer side, except that peeling occurred between the double-sided tape of the test specimen and the SUS plate.

[0043] <Accelerated heat test for base peel strength> A 90° peel test was conducted in the same manner as the accelerated heat test for resin layer side peel strength, except that peeling occurred between the double-sided tape of the test specimen and the SUS plate.

[0044] <Calculation of peel strength ratio> The strength ratio (F / G) of the resin layer side peel strength (F) to the substrate side peel strength (G) of Examples 4 to 7 was calculated using the substrate side peel strength (G) of Example 5. Since it is believed that the thickness of the ultraviolet curing coating does not affect the substrate side peel strength (G), the calculation was performed using the substrate side peel strength (G) of Example 5. Table 2 shows the measured peel strength on the resin layer side (F) and the peel strength on the substrate side (G) as well as the calculated strength ratio (F / G).

[0045] [Table 2]

[0046] As can be seen from Table 2, Examples 4 to 7, in which an ultraviolet curing paint was laminated, had higher initial strength than the Comparative Example. The strength ratio in the accelerated heating test was 1.1 or more for Examples 4 to 7, but less than 1 for the Comparative Example. It is believed that laminating an ultraviolet curing paint can prevent the plasticizer from migrating from the resin layer containing the plasticizer to the double-sided tape.

[0047] To evaluate repositionability, a peeling test was conducted assuming temporary construction, and a peeling test assuming permanent construction when temporary construction is followed by permanent construction.

[0048] <Peeling test assuming temporary construction> The test specimen was attached to a SUS plate and pressed against it with a 5 kg roller 10 times. Immediately afterward, the SUS plate was secured to a peel tester. The double-sided tape on the test specimen was peeled from the SUS plate for at least 50 mm, and then one end of the specimen was gripped with the upper chuck and fixed at a 90° angle. Based on JIS Z 0237, the laminate was pulled at a speed of 300 mm / min and peeled to 25 mm, 40 mm, 55 mm, 70 mm, and 85 mm. The average of the five measurements was taken as the resin layer peel strength. This was the first test value. After peeling, the same test specimen used in the first test was reattached to the SUS plate and subjected to a similar pressure-bonding and 90° peel test. This was the second test value. The same test specimen was then reattached to the SUS plate and subjected to a pressure-bonding and 90° peel test. This was the third test value. After each 90° peel test, the SUS plate was observed for residual adhesive. The results are shown in Table 3.

[0049] [Table 3]

[0050] The test was conducted assuming that the tape would be peeled off after application for positioning during construction and then reapplied. Since a low measured value is preferable for ease of peeling, Example 5 in Table 3 is preferred.

[0051] <Peeling test assuming actual construction> After the third 90° peel test described above, the same specimen was pressed in the same manner as in the preliminary peel test and then cured at 21°C for 24 hours. After curing, a 90° peel test was conducted in the same manner. This is the test value for the actual application. After the 90° peel test, the SUS plate was inspected for residual adhesive. The results are shown in Table 4.

[0052] [Table 4]

[0053] The test was conducted assuming that the actual construction was carried out after positioning during construction. Since a strength of 10 N / 25 mm or more is preferable for the actual construction to prevent problems such as peeling or misalignment, Example 5 in Table 3 is more preferable.

[0054] <Surface roughness measurement> For the laminates of Examples 2, 5, and 6, and the comparative example, the surface to which double-sided tape is applied when creating an easily installed flooring material was used as the adherend, and the surface roughness of the adherend surface was measured. Surface roughness Ra was measured using a Mitutoyo Corporation SURF TEST SJ-410 at a speed of 0.5 mm / sec over a measurement range of 4 mm. The retention rate of peel strength after 4 weeks of accelerated heating testing relative to the initial peel strength of the resin layer side was calculated using the following formula. The results are shown in Table 5. Resin layer side peel strength retention rate [%] = (peel strength after 4 weeks of accelerated heating test) / (initial strength) ×100

[0055] [Table 5]

[0056] The comparative example in Table 5 has a large surface roughness Ra due to the unevenness of the substrate used in the plasticizer-containing resin layer. In Examples 2, 5, and 6, a UV-curable coating was applied to the underside of the resin layer and laminated as a plasticizer-blocking layer, resulting in a small surface roughness Ra. Examples 2 and 5 have good resin layer peel strength retention. Examples 5 and 6 differ in the integrated light intensity used to cure the UV-curable coating. Since Example 5 has a higher surface roughness than Example 6, it is believed that the anchor effect is exerted and the retention rate is high. While the retention rates of Example 6 and the comparative example are almost the same, Example 6 is better in the initial strength and accelerated heating test of the resin layer peel strength in Table 2, suggesting that a surface roughness Ra of less than 5 μm is preferable. [Industrial Applicability]

[0057] By providing a plasticizer-blocking layer on an easy-to-install flooring material laminated with double-sided tape, sufficient adhesive strength can be maintained even over time, preventing peeling at the interface between the flooring material and the double-sided tape. Therefore, the present invention is suitable for flooring materials in various buildings and vehicles. [Explanation of symbols]

[0058] 1. Resin layer containing plasticizer 2. Anti-plasticizer layer 3 double-sided tape 4 Laminate 5 Easy-to-install flooring 6. Base 7 Upper layer 8 Base material 9 Lower layer

Claims

1. a resin layer containing a plasticizer; a plasticizer prevention layer; A simple construction flooring material made by laminating the double-sided tape and the adhesive tape in this order.

2. 2. The easily laid floor material according to claim 1, wherein the resin layer containing the plasticizer contains vinyl chloride resin or rubber.

3. 3. The easily laid floor material according to claim 1, wherein the thickness of the plasticizer-preventing layer is 1 to 150 μm.

4. The ratio (F / G) of the resin layer side peel strength (F) to the base side peel strength (G) after fixing to the base with the double-sided tape is 1.1 to 10.0.

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