Tile-type decorative flooring material containing non-slip foam and its manufacturing method

The tile-type decorative floor material addresses the adhesion and slippage issues in existing olefin-based foam products by incorporating fine embossed plastic foam and adhesion film layers, enabling adhesive-free loose lay construction with improved slip resistance and sound absorption.

JP7679046B2Active Publication Date: 2025-05-19ドンシンポリマーカンパニーリミテッド +1
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Patent Information

Application Number
JP2024019691
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-02-10
Filing Date
2024-02-13
Publication Date
2025-05-19
Estimated Expiration
2041-01-28

AI Technical Summary

Technical Problem

Existing decorative floor materials with olefin-based foams struggle with poor adhesion to the bottom surface, leading to slippage issues during loose lay construction, which necessitates the use of adhesives.

Method used

A tile-type decorative floor material is developed, featuring a base material with a surface treatment layer, transparent layer, design printing layer, and base layer, combined with a fine embossed plastic foam layer and adhesion film layer. The fine embossments on the back surface of the plastic foam layer improve adhesion and reduce slippage without the need for adhesives.

Benefits of technology

The solution significantly enhances the slip resistance between the floor material and the bottom surface, allowing for effective loose lay construction without adhesives, while maintaining impact sound absorption and walking comfort.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a tile-type decorative flooring material as a laminated product of plastic foam having an impact sound-absorption function, which has a significant improvement in terms of slippage between the product and the floor surface among products that do not use adhesives during installation or are mounted on a place to which a small amount of an adhesive is applied.SOLUTION: A tile-type decorative flooring material comprises: a flooring material part 10 including a surface-processed layer 101, a clear layer 102, a design-print layer 103 and an underlayer 106; and a micro-embossed plastic foam part 20 including a plastic foam layer 201 and an adhesive film layer 202 with micro-embossing formed on a rear surface of the plastic foam layer. The density of the plastic foam layer is 20-200 kg / m3. The adhesive film layer and a lowermost portion of the plastic foam layer have micro-embossing with alternately arranged concavities and convexities.SELECTED DRAWING: Figure 1
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Description

Technical Field

[0001] The present invention relates to a tile-type decorative floor covering including a non-slip foamed foam and a method for manufacturing the same. More specifically, among products of decorative floor coverings applied to building floors and floorings, in tile-structured products that are cut into unit sizes for construction, the present invention relates to a tile-type decorative floor covering that significantly improves slippage between the product and the bottom surface in a construction process without using an adhesive.

Background Art

[0002] Here, background art related to the present invention is provided, but these do not necessarily mean known art. Generally, floor (decorative) materials such as floor sheets and tiles are constructed on building floors and floorings. As base materials such as floor sheets and tiles, vinyl chloride, which is light, flexible, and excellent in cushioning properties and sound absorption properties, is mainly used for manufacturing. For example, the base material is manufactured by mixing or laminating other materials with polyvinyl chloride (PVC) or vinyl chloride. Such a base material is usually composed of a plurality of layers laminated, such as a transparent layer, a printing layer, a resin-impregnated dimensional reinforcement layer, a foamed layer, and a base layer. The transparent layer protects the ink surface printed on the printing layer, the printing layer has a decorative function by imparting color and pattern, the resin-impregnated dimensional reinforcement layer is a glass fiber impregnated with PVC paste sol, which reinforces the dimensional safety of the product, the foamed layer imparts cushioning properties, and the base layer has a function of reinforcing the thickness and adhering to the bottom surface. Further, on the transparent film layer, a surface treatment layer for improving abrasion resistance and scratch resistance may be further formed as needed. Such a base material is manufactured by adjusting each layer according to the application and is used in a wide range of fields.

[0003] For example, in the following Patent Document 1 applied for and registered by the applicant of the present invention, a glass fiber mat layer manufactured by sheet-forming glass fiber or rock wool is formed between an upper PVC layer and a lower PVC layer, and then, after thermocompression, a transparent film layer made of a printing layer and a PVC resin is sequentially formed on the upper part of the base material layer, and a balance layer made of a PVC resin, a plasticizer, and a filler is formed on the lower part of the base material layer. A method for manufacturing a decorative floor material is disclosed. Such a base material is used alone in the process of finishing the floor of a building, or is used after being adhered to various types of adherends with an adhesive. In recent years, in order to remove the odor caused by the use of adhesives and minimize the influence of volatile organic compounds, a non-slip functional base material has been developed that minimizes the use of adhesives during construction by forming a functional layer for preventing slipping on the lower part of the base material layer.

[0004] On the other hand, in the case of general base materials, especially floor tiles cut in unit sizes, an adhesive is applied to the floor, and tiles are laid thereon to adhere the bottom surface and the tiles, minimizing dimensional changes. However, in recent years, the harmfulness of adhesives has been pointed out, and since a base material that minimizes dimensional changes is being developed, loose lay products that are constructed by simply placing the product on the construction floor without using an adhesive or using a small amount of adhesive have been developed in various ways. These products are attracting attention as products that are easy to construct, cost-saving, and free from the harmfulness of adhesives. In general, for the above-mentioned loose lay products, a material with excellent adhesion to the bottom surface is laminated on the back surface of the base material. However, in products that use an olefin-based foam combined with polyethylene, polypropylene, etc. and are designed to absorb impact sound, since the foam has poor adhesion to the bottom surface, in reality, due to its slipperiness, loose lay construction cannot be performed, and the use of an adhesive is inevitable.

[0005] In order to improve this, various attempts have been made, such as treating the back surface of the plastic foam with an adhesive-functional treatment agent or laminating an adhesive sheet. However, there are problems such as inducing blocking that occurs during storage, transferring the adhesive component, or damaging the surface layer of the base material. To improve this, Patent Document 4 discloses a product characterized by laminating an adhesive layer on the back surface of a base material and attaching a release paper for easy construction. However, since the adhesive and the release paper are attached, there are problems such as inconvenient handling, complicated processes, and the requirement of additional equipment, resulting in high costs.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0007] An object of the present invention is to provide a tile-type decorative floor material that laminates a plastic foam having an impact sound absorption function and significantly improves the slipperiness between the product and the bottom surface in a product that does not use an adhesive or is constructed on a portion where a small amount of adhesive is applied during construction. However, the object of the present invention is not limited to the above object, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

Means for Solving the Problems

[0008] The tile-type decorative floor material of the present invention includes a base material portion including a surface treatment layer, a transparent layer, a design printing layer, and a base layer, and a fine embossed plastic foam portion including a plastic foam layer and an adhesion film layer having fine embosses formed on the back surface of the plastic foam layer. The density of the plastic foam layer is 20 to 200 kg / m 3 and the lowermost part of the plastic foam layer and the adherent film layer have fine embossings with unevenness arranged alternately, the fine embossings are characterized in that unevenness having a depth (a) is provided at a constant interval (b) and satisfy the following formula 1. Here, [formula 1] is a ≥ 1 / 3 * b, where 0.08 mm ≤ a ≤ 0.8 mm and 0.2 ≤ b ≤ 2 mm.

[0009] The plastic foam layer can be a layer containing 3 to 10 parts by weight of an azodicarbonamide foaming agent, 0.2 to 1.5 parts by weight of an accelerator, 0.1 to 1 part by weight of a foam stabilizer, and other additives with respect to 100 parts by weight of an olefin resin, and having cushioning properties.

[0010] The adherent film layer is preferably an olefin-based film containing 0.1 to 1 part by weight of an antioxidant, 0.1 to 1 part by weight of a processing aid, and other additives with respect to 100 parts by weight of an olefin resin and having a thickness of 10 to 200 μm. The adherent film layer can be a PVC film containing 30 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, and other additives with respect to 100 parts by weight of a PVC resin and having a thickness of 10 to 200 μm. The surface treatment layer preferably contains 20 to 40% by weight of monoester, 10 to 20% by weight of oligomer, 10 to 20% by weight of polydiacrylate, 0.5 to 5% by weight of silicon, and other additives, and is a layer with a thickness of 5 to 20 μm cured by ultraviolet rays.

[0011] The transparent layer is preferably a layer containing 10 to 50 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, and other additives with respect to 100 parts by weight of a PVC resin and formed with a thickness of 0.1 to 1 mm. The design printing layer preferably contains 1 to 20 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 0 to 20 parts by weight of a filler, 1 to 5 parts by weight of a processing aid, and other additives with respect to 100 parts by weight of a PVC resin, and is a layer formed with a thickness of 0.05 to 0.2 mm.

[0012] The base layer can contain 10 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 50 to 600 parts by weight of a filler, 1 to 5 parts by weight of a processing aid, and other additives with respect to 100 parts by weight of a PVC resin, and is a layer formed with a thickness of 0.5 to 5 mm. The base material part further includes an intermediate layer provided between the design printing layer and the base layer. The intermediate layer preferably contains 10 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 50 to 500 parts by weight of a filler, 1 to 5 parts by weight of a processing aid, and other additives with respect to 100 parts by weight of a PVC resin, and is a layer formed with a thickness of 0.2 to 2 mm.

[0013] The base material part further includes any one or more layers selected from the group consisting of an intermediate layer, a dimensional reinforcement layer, and a balance layer. The intermediate layer contains 10 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 50 to 500 parts by weight of a filler, 1 to 5 parts by weight of a processing aid, and other additives with respect to 100 parts by weight of a PVC resin, and is a layer formed with a thickness of 0.2 to 2 mm. The dimensional reinforcement layer is formed by impregnating a glass fiber mat into a liquid paste sol containing 50 to 90 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 10 to 150 parts by weight of a filler, 2 to 10 parts by weight of a viscosity modifier, and other additives with respect to 100 parts by weight of a PVC paste resin, and heating and curing it to a thickness of 0.3 to 6 mm. The balance layer preferably contains 10 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 50 to 500 parts by weight of a filler, 1 to 5 parts by weight of a processing aid, and other additives with respect to 100 parts by weight of a PVC resin, and is a layer formed with a thickness of 0.3 to 3 mm. The manufacturing method of the tile - type decorative floor material of the present invention includes the steps of laminating a base layer, a design printing layer, a transparent layer, and a surface treatment layer to form a base material part; extruding a plastic foam layer composition on the back surface of the base layer, foaming or chemically foaming after electron beam cross - linking to form a plastic foam layer; and extruding a contact film layer composition while adhering it to the back surface of the plastic foam layer to form a contact film layer.

Effects of the Invention

[0014] According to the present invention, among the products of decorative floor materials, the tile - type decorative floor material of the present invention, in the decorative floor material with a tile structure that is cut into unit sizes for construction, includes a cushion layer composed of plastic foam by chemical foaming at the lower part, and at the lowermost part of the cushion layer, it includes fine uneven embossments for preventing slipping. Thereby, it has the effects of improving the walking feeling and absorbing impact sound by the cushion layer of plastic foam, and the fine uneven embossments at the lowermost part can significantly improve the slippage between the product and the bottom surface in the construction process without using an adhesive, providing a decorative floor material. In particular, in recent years, the construction of loose - lay tiles that avoid the harmfulness of adhesives and are constructed on places where no adhesive or a small amount of adhesive is applied can significantly improve the phenomenon that the base material is pushed due to the difference in the adhesion density between the bottom surface and the base material.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0016] All technical and scientific terms used in this specification shall have the same meaning as commonly understood by those having ordinary skill in the art, unless otherwise indicated. Also, throughout this specification and the claims, unless otherwise indicated, the term "comprise (comprises, comprising)" shall mean including the stated item, step, or group of items and steps, and is not intended to exclude any other item, step, or group of items and steps. In the following detailed description of the present invention, it should be understood that the terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the present invention, which is limited only by the appended claims. On the other hand, various embodiments of the present invention are combinable with any other embodiments unless a clear contrary indication is given. In particular, any feature indicated as being preferred and advantageous is combinable with any other feature indicated as being preferred and advantageous. Hereinafter, embodiments of the present invention and the effects thereof will be described with reference to the accompanying drawings.

[0017] A tile-type decorative floor material according to an embodiment of the present invention includes a base material part 10 and a fine embossed plastic foam part 20. FIG. 1 shows a specific example of the tile-type decorative floor material according to an embodiment of the present invention. The base material part 10 includes a surface treatment layer 101, a transparent layer 102, a design printing layer 103, an intermediate layer 104, a dimensional reinforcement layer 105, a base layer 106, and a balance layer 107. The base material part 10 includes the surface treatment layer 101, the transparent layer 102, the design printing layer 103, and the base layer 106, and may appropriately include the intermediate layer 104, the dimensional reinforcement layer 105, and the balance layer 107.

[0018] For example, the base material part 10 can be laminated and configured with a surface treatment layer 101, a transparent layer 102, a design printing layer 103, an intermediate layer 104, an underlayer 106, and a balance layer 107, or with a surface treatment layer 101, a transparent layer 102, a design printing layer 103, an underlayer 106, and a balance layer 107, or with a surface treatment layer 101, a transparent layer 102, a design printing layer 103, and an underlayer 106, or with a surface treatment layer 101, a transparent layer 102, a design printing layer 103, an intermediate layer 104, a dimensional reinforcement layer 105, an underlayer 106, and a balance layer 107, or with a surface treatment layer 101, a transparent layer 102, a design printing layer 103, an intermediate layer 104, a dimensional reinforcement layer 105, and an underlayer 106.

[0019] The tile - type decorative floor material according to the present invention is manufactured by forming a fine - embossed plastic foam part including a plastic foam layer and an adhesive film layer having fine embosses on the lowermost part of the base material part after forming the base material part. For example, when the base material part includes a surface treatment layer, a transparent layer, a design printing layer, and an underlayer, after laminating the underlayer, the design printing layer, the transparent layer, and the surface treatment layer to form the base material part, a plastic foam layer is formed on the back surface of the underlayer, and an adhesive film layer is formed on the back surface of the plastic foam layer, whereby the manufacturing is possible. The surface treatment layer 101 is a layer for improving surface physical properties such as scratch resistance, stain resistance, abrasion resistance, and durability. It contains 20 - 40 wt% of monoester, 10 - 20 wt% of oligomer, 10 - 20 wt% of polydiacrylate, 0.5 - 5 wt% of silicon, and other additives, and is coated with a roll coater or an air knife coater, and is cured by ultraviolet rays to form a layer with a thickness of 5 - 20 μm.

[0020] The transparent layer 102 is a layer for protecting the design printing pattern of the base material and maintaining the durability such as abrasion, friction, contamination, and deformation of the base material. It contains 10 - 50 parts by weight of a plasticizer, 1 - 5 parts by weight of a stabilizer, and other additives with respect to 100 parts by weight of PVC resin, and is a layer formed by processing in a calender process, and its thickness is preferably 0.1 - 1 mm. The design printing layer 103 is a layer formed by applying a design pattern through transfer printing, gravure printing, screen printing, offset printing, rotary printing, or flexographic printing on the surface of a white or colored sheet. The design printing layer contains 1 to 20 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 0 to 20 parts by weight of a filler, 1 to 5 parts by weight of a processing aid, 0.5 to 5 parts by weight of a pigment, and other additives based on 100 parts by weight of PVC resin. It can be processed in a calendar process, and a sheet with a thickness of 0.05 to 0.2 mm can be heat-bonded and laminated.

[0021] The intermediate layer 104 is included to minimize the unevenness of the design printing layer and maintain smoothness. It contains 10 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 50 to 500 parts by weight of a filler, 1 to 5 parts by weight of a processing aid, and other additives based on 100 parts by weight of PVC resin. It is a layer formed by processing in a calendar process, and its thickness is preferably 0.2 to 2 mm. The dimensional reinforcement layer 105 is configured by utilizing a glass fiber mat to minimize dimensional changes in the base material part. More specifically, glass-like fibers fibrillated with E-glass are cut at an appropriate unit length, dispersed in white water, formed into a sheet by papermaking, and a glass-like fiber mat treated with a binder and dried by heating is used as a base material. It contains 50 to 90 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 10 to 150 parts by weight of a filler, 2 to 10 parts by weight of a viscosity modifier, and other additives based on 100 parts by weight of PVC paste resin. It is a sheet processed with a liquid paste sol, impregnated with the glass-like fiber mat in the paste sol, and heat-cured, and its thickness is 0.3 to 6 mm, preferably 0.3 to 1 mm.

[0022] The base layer 106 is a layer that contributes to the weight feeling and thickness of the base material and ensures hardness. It contains 10 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 50 to 600 parts by weight of a filler, 1 to 5 parts by weight of a processing aid, and other additives based on 100 parts by weight of PVC resin. It is a layer processed in a calendar process, and its thickness is 0.5 to 5 mm. The base layer here can endow different weights according to each formulation, soften or harden the hardness, and can be configured and thickened in various ways such as adding a foam layer to endow cushioning properties, so as to endow its functions.

[0023] The balance layer 107 is a layer that adjusts the warping of the base material and maintains the adhesion. It contains 10-60 parts by weight of a plasticizer, 1-5 parts by weight of a stabilizer, 50-500 parts by weight of a filler, 1-5 parts by weight of a processing aid, and other additives based on 100 parts by weight of a PVC resin, and is a layer processed by a calendering process, and its thickness is 0.3-3 mm. The fine embossed plastic foam part 20 includes a plastic foam layer 201 and an adhesion film layer 202. By providing fine concavo-convex embossing that widens the unit area at the lowermost part of the plastic foam layer 201, the adhesion between the bottom surface and the base material can be enhanced, and slipping can be prevented.

[0024] The plastic foam layer 201 contains 3-10 parts by weight of an azodicarbonamide foaming agent, 0.2-1.5 parts by weight of an accelerator, 0.1-1 part by weight of a foaming stabilizer, and other additives based on 100 parts by weight of an olefin resin, and is a layer formed by extrusion processing, followed by electron beam crosslinking, and then foaming or chemical foaming, and its thickness is 0.3-2 mm, and the density is 20-200 kg / m 3 It is preferably so. More specifically, the plastic foam layer 201 contains an olefin resin such as polypropylene and polyethylene, a foaming agent, an accelerator, a foaming stabilizer, and other additives, processes a foaming masterbatch with an extrusion T-die, irradiates it with an electron beam of 1-5 Mrad dose at a voltage of 200-700 kw, and then foams it through a foaming oven at 200°C - 250°C, or forms it by chemical foaming without electron beam irradiation. While laminating the adhesion film layer 202 here, a fine emboss is applied using an embossing roll, so that adhesion and embossing can be realized simultaneously.

[0025] The adhesion film layer 202 is an olefin-based film with a thickness of 10 to 200 μm containing 0.1 to 1 part by weight of an antioxidant, 0.1 to 1 part by weight of a processing aid, and other additives per 100 parts by weight of an olefin-based resin, or a PVC film with a thickness of 10 to 200 μm containing 30 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, and other additives per 100 parts by weight of a PVC resin, which is adhered while being extruded with a T-die, or in a form where the film processed with a T-die is wound up and laminated again to adhere to the plastic foam layer. Here, nitrile-butadiene rubber (NBR), ethylene-vinyl acetate (EVA), an acrylic resin with excellent adhesiveness, etc., which increase the adhesiveness of the adhesion film layer 202, can be added to maximize its function.

[0026] The embossing here is to apply fine male and female engraving to a circular metal roll, and the surface temperature of the metal roll is maintained at a temperature of 80 to 160 °C, which is pressure-bonded and adhered onto the plastic foam with an olefin-based resin film or a PVC film, and at the same time, embossing is applied. Also, in order to maximize the unit area, as shown in FIG. 2, the unevenness on the back surface of the plastic foam layer is arranged alternately in the machine direction and the width direction, so that the concave and convex parts can be repeatedly arranged alternately over the entire width.

[0027] The unevenness of the fine embossing is, as shown in FIG. 2, the unevenness having a depth (a) is provided at a constant interval (b). Here, the depth (a) of the unevenness is within the range of 0.08 to 0.8 mm and is larger than 1 / 3 of the interval (b). That is, the fine embossing according to the present invention satisfies the following formula 1. 〔Formula 1〕 a ≧ 1 / 3 * b Here, 0.08 mm ≦ a ≦ 0.8 mm and 0.2 ≦ b ≦ 2 mm.

[0028] When the above formula is satisfied, it becomes possible to develop a plastic foam for a decorative floor material that maximizes the unit area of the fine embossed plastic foam part 20 and significantly improves the slipperiness. Here, if the depth (a) and the interval (b) are outside the above range, it is difficult to embody the unevenness, the unit area is small, and the effect of improving the slipperiness is insufficient. Even when the depth (a) of the unevenness is 1 / 3 or less of the interval (b), the depth of the emboss (unevenness) is low and the unit area is small, so the effect of improving the slipperiness will be inferior.

[0029] The fine embossed plastic foam part 20 and the base material part 10 will be adhered by a known adhesion method. However, an acrylic or urethane-based adhesive is applied to the back surface of the base material part 10 by a gravure method or a slot die method, dried by heating, and then the fine embossed plastic foam part 20 is adhered. Or, a hot melt type adhesive is melted and applied to the back surface of the base material part 10 by a T-die at a high temperature, and the fine embossed plastic foam part 20 is adhered before it is cured. Or, a hot melt type adhesive is coated on the base material part 10 or the fine embossed plastic foam part 20 by a gravure method, dried by heating, and then they are laminated together. Any of various methods may be used for lamination. Here, it is important to prevent the fine emboss unevenness from disappearing or changing.

[0030] The decorative floor material according to the present invention laminates a plastic foam part with fine embosses at the bottom of a tile-shaped base material processed using a polyolefin resin such as polyvinyl chloride resin, polyethylene, or polypropylene. Therefore, it has excellent effects of walking feeling and impact sound absorption by a plastic cushion, improves the slipperiness due to the fine embosses on the back surface, and can provide a non-slip base material with high adhesion between the floor and the product even in a loose lay installation without using an adhesive.

[0031] 〔Example〕 From the bottom, a balance layer, a base layer, a middle layer, a design printing layer, a transparent layer, and a surface treatment layer are laminated to form a base material portion. A fine embossed plastic foam portion including a plastic foam layer (thickness 1.0 mm) and an adhesion film layer (thickness 10 μm) is laminated on the back surface of the balance layer. Here, in laminating an adhesion film layer formed of an olefin resin on an olefin-based foam having a density of 100 kg / m3 and a thickness of 1.0 mm, fine embosses with various depths (a) and intervals (b) were formed using a metal roll. The conditions of the embosses formed in the adhesion film layer are shown in Table 1 below.

[0032] The slipperiness of the base material manufactured as described above was tested. The test method was a test method according to the pendulum of BS-7976-2, which is a standard for slip tests such as the bottom surface and the road. With the surface on which the plastic foam was attached as the surface, the degree to which the pendulum slides was compared. To maximize the influence of slip, the distance of the contact portion with the slider was set to 6 mm, and the measured pendulum test value is shown in Table 1 below.

[0033]

Table 1

[0034] The features, structures, effects, etc. shown in the above examples can be combined or modified and implemented for other examples by those with ordinary knowledge in the field to which the examples belong. Therefore, it should be understood that the content regarding such combinations and modifications is included in the scope of the present invention.

Explanation of Reference Numerals

[0035] 10: Base material portion 20: Fine embossed plastic foam portion 101: Surface treatment layer 102: Transparent layer 103: Design printing layer 104: Middle layer 105: Dimension reinforcement layer 106: Base layer 107: Balance layer 201: Plastic foam layer 202: Adhesive film layer a: Depth b: Spacing

Claims

1. A base material portion including a surface treatment layer, a transparent layer, a design printing layer, and a base layer; A fine embossed plastic foam part including a plastic foam layer and an adhesive film layer having fine embossments formed on the back surface of the plastic foam layer, The density of the plastic foam layer is 20 to 200 kg / m 3 and The bottom of the plastic foam layer and the adhesive film layer have fine embossments in which concaves and convexes are alternately arranged, The fine embossing has projections and recesses having a depth (a) arranged at regular intervals (b) and satisfies the following formula 1: [Formula 1] a ≧ 1 / 3 * b Here, 0.08 mm≦a≦0.8 mm and 0.2≦b≦2 mm.

2. The plastic foam layer is a layer having cushioning properties, containing 3 to 10 parts by weight of an azodicarbonamide foaming agent, 0.2 to 1.5 parts by weight of an accelerator, 0.1 to 1 part by weight of a foam stabilizer, and other additives per 100 parts by weight of an olefin resin. The tile-type decorative floor material according to claim 1.

3. The adhesive film layer is an olefin-based film having a thickness of 10 to 200 μm, containing 0.1 to 1 part by weight of an antioxidant, 0.1 to 1 part by weight of a processing agent, and other additives relative to 100 parts by weight of an olefin-based resin.

4. The tile-type decorative floor material according to claim 1, characterized in that the adhesive film layer is a PVC film having a thickness of 10 to 200 μm, containing 30 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, and other additives relative to 100 parts by weight of PVC resin.

5. The tile-type decorative floor material according to claim 1, characterized in that the surface treatment layer is a layer having a thickness of 5 to 20 μm, which contains 20 to 40% by weight of monoester, 10 to 20% by weight of oligomer, 10 to 20% by weight of polydiacrylate, 0.5 to 5% by weight of silicone, and other additives, and is cured by ultraviolet light.

6. The tile-type decorative floor material according to claim 1, characterized in that the transparent layer is a layer formed to a thickness of 0.1 to 1 mm, containing 10 to 50 parts by weight of plasticizer, 1 to 5 parts by weight of stabilizer, and other additives relative to 100 parts by weight of PVC resin.

7. The tile-type decorative floor material according to claim 1, characterized in that the design printed layer contains 1 to 20 parts by weight of plasticizer, 1 to 5 parts by weight of stabilizer, 0 to 20 parts by weight of filler, 1 to 5 parts by weight of processing agent, and other additives relative to 100 parts by weight of PVC resin, and is a layer formed to a thickness of 0.05 to 0.2 mm.

8. The tile-type decorative floor material according to claim 1, characterized in that the base layer is a layer formed to a thickness of 0.5 to 5 mm, containing 10 to 60 parts by weight of plasticizer, 1 to 5 parts by weight of stabilizer, 50 to 600 parts by weight of filler, 1 to 5 parts by weight of processing preparation, and other additives relative to 100 parts by weight of PVC resin.

9. The base material portion further includes an intermediate layer provided between the design print layer and the base layer, The tile-type decorative floor material according to claim 1, characterized in that the intermediate layer is a layer formed to a thickness of 0.2 to 2 mm, containing 10 to 60 parts by weight of plasticizer, 1 to 5 parts by weight of stabilizer, 50 to 500 parts by weight of filler, 1 to 5 parts by weight of processing agent, and other additives relative to 100 parts by weight of PVC resin.

10. The base material further includes at least one layer selected from the group consisting of an intermediate layer, a dimensional reinforcing layer, and a balancing layer, and the intermediate layer includes 10 to 60 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 50 to 500 parts by weight of a filler, 1 to 5 parts by weight of a processing agent, and other additives relative to 100 parts by weight of PVC resin, and is a layer formed to a thickness of 0.2 to 2 mm; The dimensional reinforcement layer is a layer formed to a thickness of 0.3 to 6 mm by impregnating a glass fiber mat with a liquid paste sol containing 50 to 90 parts by weight of a plasticizer, 1 to 5 parts by weight of a stabilizer, 10 to 150 parts by weight of a filler, 2 to 10 parts by weight of a viscosity modifier, and other additives relative to 100 parts by weight of a PVC paste resin, and then heating and curing the liquid paste sol; The tile-type decorative floor material according to claim 1, characterized in that the balance layer is a layer formed to a thickness of 0.3 to 3 mm, containing 10 to 60 parts by weight of plasticizer, 1 to 5 parts by weight of stabilizer, 50 to 500 parts by weight of filler, 1 to 5 parts by weight of processing preparation, and other additives relative to 100 parts by weight of PVC resin.

11. A method for producing a tile-type decorative floor material according to any one of claims 1 to 10, A step of laminating a base layer, a design printing layer, a transparent layer, and a surface treatment layer to form a base part; A step of extruding a plastic foam layer composition on the back surface of the base layer, crosslinking the composition with an electron beam, and then foaming or chemically foaming the composition to form a plastic foam layer; and extruding an adhesive film layer composition and adhering it to the back surface of the plastic foam layer while providing fine embossing using an embossing roll to form an adhesive film layer.

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