KR102365699B1 - Polyvinyl chloride tile flooring - Google Patents

Abstract

The present invention is a polyvinyl chloride tile flooring material, more specifically, a back layer sequentially from the floor; base layer; printed layer; and a film layer; in the tile flooring material comprising: the base layer having the thickest thickness is soft and the same as that of the conventional polyvinyl chloride tile flooring material, but the easy layer and the film layer are manufactured to be rigid, which is required as an existing tile flooring material It relates to a polyvinyl chloride tile flooring material that has improved the uneven transfer and pressability of the floor while satisfying the physical properties.

Description

Polyvinyl chloride tile flooring {Polyvinyl chloride tile flooring}

The present invention is a polyvinyl chloride tile flooring material, more specifically, a back layer sequentially from the floor; base layer; printed layer; and a film layer; in the tile flooring material comprising: the base layer having the thickest thickness is soft and the same as that of the conventional polyvinyl chloride tile flooring material, but the easy layer and the film layer are manufactured to be rigid, which is required as an existing tile flooring material It relates to a polyvinyl chloride tile flooring material that has improved the uneven transfer and pressability of the floor while satisfying the physical properties.

As an example of a flooring material, reinforced flooring is a laminate of a surface layer including a paper or fibrous substrate impregnated with a thermosetting resin such as melamine resin or phenol resin on the upper surface of a wood substrate such as MDF (Medium Density Fiberboard) or HDF (High Density Fiberboard). .

The hardened flooring has the advantage of being hard, but there is a problem that the resin of the surface layer absorbs moisture and is discolored or deformed. Vinyl (PVC) tile flooring has been developed.

For example, the polyvinyl chloride (PVC) tile flooring material is disclosed in Korean Patent Laid-Open Publication No. 10-2016-0027660.

However, the polyvinyl chloride (PVC) tile flooring material has problems such as uneven transfer and pressability of the floor due to the low strength of the finished tile flooring material according to the plasticizer prescription.

Therefore, there is an urgent need to develop a PVC tile flooring material that has the same rigid characteristics as the reinforced flooring while having the strong advantage of moisture resistance of the existing PVC tile flooring material.

KR 10-2016-0027660 A (published date: 2016.03.10)

The present invention has been devised to solve the above problems, and the thickest base layer is soft and the same as the conventional polyvinyl chloride tile flooring material, but the easy layer and the film layer are manufactured to be hard, which is required as an existing tile flooring material. An object of the present invention is to provide a polyvinyl chloride tile flooring material that is satisfactory in physical properties while improving uneven transfer and pressability of the floor.

In order to achieve the above object,

The present invention provides an easy layer sequentially from the bottom; base layer; printed layer; and a film layer; as a tile flooring material comprising:

The easy layer and the film layer provide a polyvinyl chloride tile flooring comprising 5-20 parts by weight of an acrylic resin and 1.5-20 parts by weight of a plasticizer based on 100 parts by weight of each polyvinyl chloride resin.

The polyvinyl chloride tile flooring material of the present invention has the same thickness as the conventional polyvinyl chloride tile flooring material as the thickest base layer is soft. It has the effect of improving the uneven transfer and pressability of the floor.

1 is a side cross-sectional view showing an embodiment of a laminated structure of a polyvinyl chloride tile flooring material according to the present invention.
Figure 2 is a side cross-sectional view showing another embodiment of the laminated structure of the polyvinyl chloride tile flooring according to the present invention.

1, the present invention is

the backing layer 10 sequentially from the bottom; base layer 20; printed layer 30; and a film layer 40; as a tile flooring 1 comprising:

The easy layer 10 and the film layer 40 each contain 5-20 parts by weight of an acrylic resin and 1.5-20 parts by weight of a plasticizer based on 100 parts by weight of a polyvinyl chloride resin. it's about

Hereinafter, each layer constituting the tile flooring 1 of the present invention will be described in detail as follows.

Easy Layer (10)

The easy layer 10 prevents distortion and warpage of the tile flooring material, and may contain 5-20 parts by weight of an acrylic resin and 1.5-20 parts by weight of a plasticizer based on 100 parts by weight of a polyvinyl chloride resin.

The polyvinyl chloride resin may be a general-purpose polyvinyl chloride resin that can be applied to both soft and hard products as a vinyl chloride homopolymer.

The polyvinyl chloride resin may have a polymerization degree of, for example, 650-890 or 700-850. When it is less than the above range, durability and mechanical properties are lowered, and when it exceeds the above range, workability is lowered, so that it can have a degree of polymerization within the above range.

The acrylic resin is intended to improve workability and physical properties by increasing the load in a short time to accelerate the mixing speed, and an acrylic resin having a relatively high glass transition temperature and rigidity may be used.

The acrylic resin may be, for example, a random copolymer of methyl methacrylate and an acrylic monomer other than methyl methacrylate.

The acrylic monomer may be, for example, an alkyl acrylate monomer, an alkyl methacrylate monomer, or a mixture thereof.

The alkyl acrylate monomer is, for example, methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, sec- butyl acrylate, tert- butyl acrylate , methylbutyl acrylate, amyl acrylate, isoamyl acrylate, n-hexyl acrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, pentadecyl acrylate, dodecyl acrylate, isobornyl acrylate, It may be at least one selected from the group consisting of phenyl acrylate, benzyl acrylate, phenoxyethyl acrylate, 2-hydroxyethyl acrylate, 2-methoxyethyl acrylate, glycidyl acrylate and allyl acrylate. .

The alkyl methacrylate monomer is, for example, ethyl methacrylate except methyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, sec-butyl Methacrylate, tert-butyl methacrylate, amyl methacrylate, isoamyl methacrylate, n-hexyl methacrylate, cyclohexyl methacrylate, 2-ethylhexyl methacrylate, pentadecyl methacrylate, dodecyl methacrylate, isobornyl methacrylate, phenyl methacrylate, benzyl methacrylate, phenoxyethyl methacrylate, 2-hydroxyethyl methacrylate, 2-methoxyethyl methacrylate, glycy It may be at least one selected from the group consisting of dil methacrylate and allyl methacrylate.

The acrylic resin may further include an unsaturated monomer copolymerizable with the methyl methacrylate in addition to the methyl methacrylate and the acrylic monomer.

The unsaturated monomer may include, for example, unsaturated carboxylic acids such as methacrylic acid and acrylic acid; 1-alkenes, such as 1-hexene and 1-heptene; branched alkenes such as vinylcyclohexane, 3,3-dimethyl-1-propene, 3-methyl-1-diisobutylene, and 4-methyl-1-pentene; acrylonitrile; vinyl esters such as vinyl acetate; styrene; substituted styrene having an alkyl substituent in a side chain such as α-methylstyrene and α-ethylstyrene; substituted styrene having an alkyl substituent on the ring, such as vinyltoluene and p-methylstyrene; halogenated styrenes such as monochlorostyrene, dichlorostyrene, tribromostyrene and tetrabromostyrene; maleic acid derivatives such as maleic anhydride, methyl maleic anhydride, maleimide and methyl maleimide; Diene, such as divinylbenzene, etc. are mentioned.

The acrylic resin is, for example, a random copolymer of methyl methacrylate and methacrylic acid; random copolymers of methyl methacrylate, methyl acrylate and methacrylic acid; Or it may be a random copolymer of methyl methacrylate, n-butyl acrylate and styrene, and in a specific embodiment of the present invention, the acrylic resin is a random copolymer of methyl methacrylate, n-butyl acrylate and styrene. can be used

The acrylic resin may have, for example, a weight average molecular weight of 800,000-1,500,000 g/mole or 1,000,000-1,200,000 g/mole. If it is less than the above range, workability and physical properties may be reduced, and if it exceeds the above range, the melt efficiency is lowered, so that the processability improvement effect is insignificant and the easy layer 10 is easily broken due to brittleness within the above range. It may have a weight average molecular weight.

In addition, the acrylic resin may have, for example, a relative viscosity (η _Rel ) of 1-5 or 2-4 at 20-25°C. If it is less than the above range, physical properties may be deteriorated, and if it exceeds the above range, the processability improvement effect is insignificant and the easy layer 10 brittles and breaks easily, so it may have a relative viscosity within the above range.

In addition, the acrylic resin may have, for example, a glass transition temperature of 85-120°C or 90-115°C. When it is less than the above range, the effect of increasing the strength cannot be expected because the glass transition temperature increasing effect of the easy layer 10 is insignificant. .

In addition, the acrylic resin may be included in an amount of 5-20 parts by weight or 5-15 parts by weight based on 100 parts by weight of the polyvinyl chloride resin. When it is less than the above range, the effect of improving processability is insignificant, and when it exceeds the above range, the acrylic resin has a low specific heat and cools quickly, so that calender processability is deteriorated, and thus it may be included within the content range.

In addition, the easy layer 10 may include a plasticizer.

In this case, since the easy layer 10 of the present invention includes the acrylic resin, the content of the plasticizer used can be minimized compared to the conventional polyvinyl chloride alone resin composition.

The plasticizer may be at least one selected from the group consisting of a phthalate-based plasticizer, a terephthalate-based plasticizer, a benzoate-based plasticizer, a citrate-based plasticizer, a phosphate-based plasticizer, and an adipate-based plasticizer.

The phthalate-based plasticizer may be, for example, at least one selected from the group consisting of dibutyl phthalate, diethylhexyl phthalate, diisononyl phthalate, diisodecyl phthalate and butyl benzyl phthalate.

As the terephthalate-based plasticizer, an eco-friendly plasticizer, for example, dioctyl terephthalate may be used.

The benzoate-based plasticizer is, for example, 2-(2-(2-phenylcarbonyloxyethoxy)ethoxy)ethyl benzoate, glyceryl tribenzoate, trimethylolpropane tribenzoate, isononyl benzoate, 1 -methyl-2-(2-phenylcarbonyloxypropoxy)ethyl benzoate, 2, 2, 4-trimethyl-1, 3-pentanediol dibenzoate, n-hexyl benzoate and trimethylol propanetribenzoate It may be at least one selected from the group consisting of.

The citrate-based plasticizer may be, for example, at least one selected from the group consisting of acetyl tributyl citrate, acetyl triisobutyl citrate, acetyl triethylhexyl citrate, and tributyl citrate.

The phosphate-based plasticizer may be, for example, at least one selected from the group consisting of tricresyl phosphate and tributyl phosphate.

The adipate-based plasticizer may be, for example, at least one selected from the group consisting of bis(2-ethylhexyl)adipate, dimethyl adipate, monomethyl adipate and dioctyl adipate diisononyl adipate.

The plasticizer may be used in 1.5-20 parts by weight or 2-15 parts by weight based on 100 parts by weight of the polyvinyl chloride resin. If it is less than the above range, gelling properties are insufficient and processability and productivity are reduced due to an increase in load. And since the effect of improving compressibility is insignificant and the tile flooring material may be bent, it may be used within the above content range.

In addition, the easy layer 10 of the present invention may further include one or more selected from the group consisting of fillers and thermal stabilizers.

The filler may be at least one selected from the group consisting of calcium carbonate, wood powder, mica, amorphous silica, talc, zeolite, magnesium carbonate, calcium sulfate, calcium phosphate, magnesium phosphate, aluminum oxide, kaolin, ATH (Alumina trihydrate) and talc. there is.

The filler may preferably be calcium carbonate, and in this case, it is advantageous in terms of price and versatility, and may increase heat resistance and durability.

The filler may be used in 20-80 parts by weight, 20-60, or 20-40 parts by weight based on 100 parts by weight of the polyvinyl chloride resin. If it is less than the above range, there is a concern about the price increase of the tile flooring material, and if it exceeds the above range, workability is reduced, so it can be used within the above range.

The heat stabilizer is necessary for conventional polyvinyl chloride resin processing, and the type is not limited. For example, at least one selected from the group consisting of epoxidized soybean oil, metal salt, calcium-zinc-based and barium-zinc-based may be used. can

The heat stabilizer may be used in 1-6 parts by weight based on 100 parts by weight of the polyvinyl chloride resin.

The easy layer 10 may have, for example, a thickness of 0.1-0.5 mm or 0.15-0.4 mm, which may be the same as or slightly thicker than the film layer 40 to be described later. If it is less than the above range, although the easy layer is hard, it has no effect on the change in strength of the finished tile flooring material, so problems such as uneven transfer and pressability of the floor cannot be solved, bending of the tile flooring cannot be prevented, and the above range cannot be exceeded. In this case, as it is formed thicker than necessary, manufacturing costs increase and problems may occur when cutting the tile flooring material, so the thickness may be within the above range.

base layer (20)

In the present invention, the base layer 20 is a layer that provides physical properties required as a tile flooring material such as dimensional stability and cutability, and 30-50 parts by weight of a plasticizer and 500-800 parts by weight of a filler based on 100 parts by weight of a polyvinyl chloride resin may include

Since the polyvinyl chloride resin, plasticizer, and filler are the same as described above, overlapping descriptions will be omitted.

Specifically, the plasticizer may be included in an amount of 30-50 parts by weight or 35-45 parts by weight based on 100 parts by weight of the polyvinyl chloride resin. Since excellent processability can be imparted within the above range, it is preferably included within the above range.

In addition, the filler may be used in 500-800 parts by weight, or 600-750 parts by weight based on 100 parts by weight of the polyvinyl chloride resin. If it is less than the above range, there is a concern about the price increase of the tile flooring material, and if it exceeds the above range, workability is reduced, so it can be used within the above range.

The base layer 20 may further include a thermal stabilizer, and the description thereof is the same as described above, so the overlapping description will be omitted.

The heat stabilizer may be included in an amount of 1-6 parts by weight based on 100 parts by weight of the polyvinyl chloride resin.

The base layer 20 may have a thickness of, for example, 0.5-5 mm or 1-3 mm. If it is less than the above range, the dimensional stability required as a tile flooring material cannot be satisfied, and the effect of improving the uneven transfer and pressing properties of the floor is insignificant despite laminating a hard film layer to be described later. As it is formed, it may have a thickness within the above range because it is not appropriate due to an increase in manufacturing cost.

printed layer (30)

On the other hand, the printed layer 30 laminated on the base layer 20 is to give various appearance and design effects to the tile flooring, 25-30 parts by weight of a plasticizer and a heat stabilizer based on 100 parts by weight of the polyvinyl chloride resin 1-5 parts by weight and 20-30 parts by weight of a pigment may be included.

The polyvinyl chloride resin, plasticizer, and heat stabilizer are the same as the polyvinyl chloride resin, plasticizer, and heat stabilizer included in the easy layer 10 described above, so the overlapping description will be omitted.

The pigment may be titanium dioxide (TiO ₂ ), but is not limited thereto.

The print layer 30 may be formed through transfer printing on the surface of the white sheet laminated (laminated) on the base layer 20 , but is not limited thereto and directly on the base layer 20 by gravure (gravure). ) or may be formed through screen printing or the like.

The printed layer 30 may have a thickness of, for example, 0.01-1 mm or 0.05-0.5 mm, and in this case, various appearance and design effects may be imparted to the tile flooring material.

film layer (40)

The film layer 40 is laminated on the upper part of the printed layer 30 to protect the lower printed pattern or pattern, and also to increase the stiffness of the tile flooring material to improve the uneven transfer and pressability of the floor, It may include 5-20 parts by weight of an acrylic resin and 1.5-20 parts by weight of a plasticizer based on 100 parts by weight of the polyvinyl chloride resin.

Since the polyvinyl chloride resin, the acrylic resin and the plasticizer are the same as the polyvinyl chloride resin, the acrylic resin and the plasticizer included in the easy layer 10 described above, the overlapping description will be omitted.

The plasticizer may be used in 1.5-20 parts by weight or 2-15 parts by weight based on 100 parts by weight of the polyvinyl chloride resin. If it is less than the above range, gelling properties are insufficient and processability and productivity are reduced due to an increase in load. And since the effect of improving compressibility is insignificant and the tile flooring material may be bent, it may be used within the above content range.

The film layer 40 may further include a thermal stabilizer. Since the thermal stabilizer is the same as the above-described thermal stabilizer, the overlapping description will be omitted.

The heat stabilizer may be included in an amount of 1-6 parts by weight based on 100 parts by weight of the polyvinyl chloride resin.

The film layer 40 may have, for example, a thickness of 0.1-0.5 mm or 0.12-0.4 mm. If it is formed below the above range, there is a risk of damage as it is formed too thinly, so it is difficult to protect the printed layer 30 located below. It may have a thickness within the range.

The film layer 40 may have, for example, a glass transition temperature of 39-83°C, or 50-80°C. By having a glass transition temperature within the above range, the strength (stiffness) of the tile flooring material of the present invention is increased to improve the uneven transfer and pressability of the floor.

In addition, the tile flooring 1 of the present invention is selectively laminated on the film layer 40 to improve the scratch resistance and abrasion resistance of the surface of the tile flooring material, and a UV coating layer 50 to prevent the adhesion of contaminants. It may further include. (See FIG. 2)

UV Coating Layer (50)

The UV coating layer 50 may be formed by coating a conventional photocurable resin.

The thickness of the UV coating layer 50 may be 0.005-0.1mm or 0.01-0.05mm. If it is less than the above thickness, it is difficult to expect an effect of improving physical properties such as scratch resistance, and if it exceeds the above range, it is formed too thick, so material cost is high or the appearance quality of the tile flooring may be deteriorated, so it can have a thickness within the above range there is.

Each layer of the tile flooring 1 of the present invention may further include an additive for selectively controlling physical properties. The additive includes one or more selected from antistatic agents, ultraviolet absorbers, flame retardants, natural waxes, antioxidants, lubricants, colorants, stabilizers, wetting agents, thickeners, foaming agents, defoamers, coagulants, gelling agents, anti-settling agents, antioxidants, and the like. may be used, and their types and contents are not particularly limited.

The easy layer 10, the base layer 20, the printing layer 30, and the film layer 40 except for the UV coating layer 50 of the tile flooring material 1 of the present invention is, for example, extrusion molding, calender molding Alternatively, each of the above layers may be manufactured in a film or sheet shape by blow molding.

Subsequently, using a plywood process, etc. known in the art, the tile flooring 1 may be formed by applying a temperature of 150-190° C. and a pressure of 50-100 kg/cm ² .

The polyvinyl chloride tile flooring material of the present invention has the same thickness as the conventional polyvinyl chloride tile flooring material as the thickest base layer is soft. It has the effect of improving the uneven transfer and pressability of the floor.

The tile flooring of the present invention may have a Shore D hardness of 65-75 or 68-73.

The tile flooring material of the present invention may have, for example, a thermal deformation temperature of 30-75°C or 40-70°C measured in accordance with ISO 75-1.

In addition, the tile flooring material of the present invention may have a strength (stiffness) of 25-60 gf·cm or 30-55 gf·cm measured using TOYOSEIKI's TABER STIFFNESS TESTER as an example.

Within the above range, there is an effect of improving the uneven transfer and pressing properties of the tile flooring material.

Hereinafter, preferred examples are presented to help the understanding of the present invention, but the following examples are merely illustrative of the present invention, and it will be apparent to those skilled in the art that various changes and modifications are possible within the scope and spirit of the present invention, It goes without saying that such changes and modifications fall within the scope of the appended claims.

[Example]

1. Manufacture of tile flooring

<Example 1>

(Formation of easy layer)

For 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 7 parts by weight of acrylic resin (LG Chemical, PA912), 5 parts by weight of plasticizer (LG Chemical, DOTP), 20 parts by weight of calcium carbonate and 3 parts by weight of heat stabilizer A composition for preparing an easy layer was prepared by kneading with a Banbari mixer.

Then, the composition for preparing the easy layer was calendered at a temperature of 160° C. to form an easy layer having a thickness of 0.2 mm.

(Formation of base layer)

To 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 40 parts by weight of a plasticizer (LG Chemical, DOTP), 650 parts by weight of calcium carbonate, and 4 parts by weight of a heat stabilizer were kneaded with a Banbari mixer to prepare a base layer composition did

Then, the composition for preparing the base layer was calendered at a temperature of 160° C. to form a base layer having a thickness of 1.9 mm.

(Formation of printed layer)

25 parts by weight of a plasticizer (LG Chemical, DOTP), 3 parts by weight of a heat stabilizer, and 25 parts by weight of a pigment (TiO ₂ ) to 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S) to produce a white sheet by kneading with a Banbari mixer A composition was prepared.

Then, the composition for preparing a white sheet was calendered at a temperature of 160° C. to form a white sheet having a thickness of 0.1 mm.

Then, a printed pattern was formed on the surface of the white sheet through gravure printing or transfer printing to form a printed layer.

(Film layer formation)

With respect to 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 7 parts by weight of acrylic resin (LG Chemical, PA912), 5 parts by weight of plasticizer (LG Chemical, DOTP) and 3 parts by weight of heat stabilizer were kneaded with a Banbari mixer. A composition for preparing a film layer was prepared.

Then, the composition for preparing the film layer was calendered at a temperature of 160° C. to form a film layer having a thickness of 0.15 mm.

A base layer is laminated on the easy layer prepared above, a printed layer is laminated on the base layer, a film layer is laminated on the printed layer, and then thermally laminated at a temperature of 160° C. to form an easy layer, a base layer, A tile flooring material in which a printed layer and a film layer were laminated was prepared.

<Example 2>

A tile flooring material was manufactured by forming in the same composition and method as in Example 1 above, except that the easy layer and the film layer were prepared by the following composition and method.

(Formation of easy layer)

For 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 7 parts by weight of acrylic resin (LG Chemical, PA912), 10 parts by weight of plasticizer (LG Chemical, DOTP), 20 parts by weight of calcium carbonate and 3 parts by weight of heat stabilizer A composition for preparing an easy layer was prepared by kneading with a Banbari mixer.

Then, the composition for preparing the easy layer was calendered at a temperature of 160° C. to form an easy layer having a thickness of 0.2 mm.

(Film layer formation)

With respect to 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 7 parts by weight of acrylic resin (LG Chemical, PA912), 10 parts by weight of plasticizer (LG Chemical, DOTP) and 3 parts by weight of heat stabilizer were kneaded with a Banbari mixer. A composition for preparing a film layer was prepared.

Then, the composition for preparing the film layer was calendered at a temperature of 160° C. to form a film layer having a thickness of 0.15 mm.

<Example 3>

A tile flooring material was manufactured by forming in the same composition and method as in Example 1 above, except that the easy layer and the film layer were prepared by the following composition and method.

(Formation of easy layer)

Based on 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 7 parts by weight of acrylic resin (LG Chemical, PA912), 15 parts by weight of plasticizer (LG Chemical, DOTP), 20 parts by weight of calcium carbonate and 3 parts by weight of heat stabilizer A composition for preparing an easy layer was prepared by kneading with a Banbari mixer.

Then, the composition for preparing the easy layer was calendered at a temperature of 160° C. to form an easy layer having a thickness of 0.2 mm.

(Film layer formation)

With respect to 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 7 parts by weight of acrylic resin (LG Chemical, PA912), 15 parts by weight of plasticizer (LG Chemical, DOTP) and 3 parts by weight of heat stabilizer were kneaded with a Banbari mixer. A composition for preparing a film layer was prepared.

Then, the composition for preparing the film layer was calendered at a temperature of 160° C. to form a film layer having a thickness of 0.15 mm.

<Comparative Example 1>

A tile flooring material was prepared by forming in the same composition and method as in Example 1 above, except that the backing layer was not included.

<Comparative Example 2>

A tile flooring material was manufactured by forming in the same composition and method as in Example 1 above, except that the easy layer and the film layer were prepared by the following composition and method.

(Formation of easy layer)

To 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 27 parts by weight of a plasticizer (LG Chemical, DOTP), 20 parts by weight of calcium carbonate, and 3 parts by weight of a heat stabilizer were kneaded with a Banbari mixer to prepare a composition for preparing an easy layer did

Then, the composition for preparing the easy layer was calendered at a temperature of 160° C. to form an easy layer having a thickness of 0.2 mm.

(Film layer formation)

A composition for preparing a film layer was prepared by kneading 33 parts by weight of a plasticizer (LG Chemical, DOTP) and 3 parts by weight of a heat stabilizer with respect to 100 parts by weight of a polyvinyl chloride resin (LG Chemical, LS 080S) with a Banbari mixer.

Then, the composition for preparing the film layer was calendered at a temperature of 160° C. to form a film layer having a thickness of 0.15 mm.

<Comparative Example 3>

A tile flooring material was manufactured by forming the easy layer in the same composition and method as in Example 1 above, except that the easy layer was prepared by the following composition and method.

(Formation of easy layer)

To 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 27 parts by weight of a plasticizer (LG Chemical, DOTP), 20 parts by weight of calcium carbonate, and 3 parts by weight of a heat stabilizer were kneaded by a Banbari mixer to prepare a composition for preparing an easy layer did

Then, the composition for preparing an easy layer was calendered at a temperature of 160° C. to form an easy layer having a thickness of 0.2 mm.

<Comparative Example 4>

A tile flooring material was prepared by forming the film layer in the same composition and method as in Example 1 above, except that the film layer was prepared by the following composition and method.

(Formation of film layer)

A composition for preparing a film layer was prepared by kneading 33 parts by weight of a plasticizer (LG Chemical, DOTP) and 3 parts by weight of a heat stabilizer with respect to 100 parts by weight of a polyvinyl chloride resin (LG Chemical, LS 080S) with a Banbari mixer.

Then, the composition for preparing the film layer was calendered at a temperature of 160° C. to form a film layer having a thickness of 0.15 mm.

<Comparative Example 5>

A tile flooring material was manufactured by forming the base layer in the same composition and method as in Comparative Example 2 above, except that the base layer was prepared by the following composition and method.

(Formation of base layer)

Based on 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 10 parts by weight of an acrylic resin (LG Chemical, PA912), 5 parts by weight of a plasticizer (LG Chemical, DOTP), 650 parts by weight of calcium carbonate, and 4 parts by weight of a heat stabilizer A composition for preparing a base layer was prepared by kneading with a Banbari mixer.

Then, the composition for preparing the base layer was calendered at a temperature of 160° C. to form a base layer having a thickness of 1.9 mm.

<Comparative Example 6>

A tile flooring material was manufactured by forming in the same composition and method as in Example 1 above, except that 30 parts by weight of acrylic resin (LG Chemical, PA912) included in each of the easy layer and the film layer was used.

<Comparative Example 7>

A tile flooring material was prepared by forming in the same composition and method as in Example 1 above, except that 3 parts by weight of the acrylic resin (LG Chemical, PA912) included in each of the easy layer and the film layer was used.

<Comparative Example 8>

A tile flooring material was manufactured by forming in the same composition and method as in Example 1 above, except that 30 parts by weight of a plasticizer (LG Chemical, DOTP) included in each of the easy layer and the film layer was used.

<Comparative Example 9>

A tile flooring material was manufactured by forming in the same composition and method as in Example 1 above, except that 1 part by weight of a plasticizer (LG Chemical, DOTP) included in each of the easy layer and the film layer was used.

2. Measurement of physical properties of tile flooring

The glass transition temperature (Tg) of the film layers of Examples 1-3 and Comparative Examples 1-9 prepared in 1 above, and the surface pressing properties, workability, scratch resistance, cutting properties, curling properties, thermal deformation temperature and The strength (stiffness) was measured and shown in Table 1 below.

-Glass transition temperature (℃) of the film layer: measured by DSC (differential scanning calorimetry).

-Surface pressing property (mm): After pressing the tile flooring material at a pressure of 1000 psi for 24 hours, the pressure was removed and the pressing depth after 24 hours was measured.

-Processability: After forming the easy layer and the film layer in two rolls, the surface thereof was visually checked.

(Good: The surface of the molded easy layer and film layer is smooth

Defect: The surface of the molded easy layer and film layer is not smooth and rough)

-Scratch resistance: The scratch resistance of the tile flooring was measured using a ball tip scratch tester.

- Cutability: When the tile flooring material was cut, the cut surface was visually checked.

(Good: the cut surface is smooth

Defect: The cut surface is not smooth and is rough)

-Curling property: The warpage of the tile flooring was visually confirmed.

(○: bending, X: non-bending)

-Heat deformation temperature: A tile flooring material was prepared as a specimen of 10mm*5mm in width*length and was measured in accordance with ISO 75-1.

-Strength: The strength of the tile flooring was measured using TOYOSEIKI's TABER STIFFNESS TESTER.

- For polyvinyl chloride resin, polyvinyl chloride resin having a degree of polymerization of 840 was used (LG Chem, LS 080S).

- The acrylic resin has a weight average molecular weight of 1,000,000-1,200,000 g/mol, a relative viscosity (η _Rel ) of 2-4 at 20-25 ° C, and a glass transition temperature of 85-120 ° C. Methyl methacrylate, n-butyl acrylate and a random copolymer of styrene (LG Chem, PA 912).

- As a plasticizer, dioctyl terephthalate was used (LG Chem, DOTP).

As confirmed in Table 1, Examples 1-3, which are tile flooring materials according to the present invention, satisfy physical properties such as cutting properties and curling properties required as a flooring material, but compared to Comparative Example 2, which is a conventional polyvinyl chloride tile, heat It can be seen that the scratch resistance and surface pressing properties are improved due to the high deformation temperature and strength.

On the other hand, in Comparative Example 1, which is a tile flooring material that does not include an easy layer, and Comparative Example 3, in which only the film layer except for the easy layer is hard, there is a problem in the curling property of the tile flooring material, and the heat deformation temperature and strength are low, so scratch resistance and It can be seen that the improvement in surface pressability is insignificant.

In addition, Comparative Example 4, in which only the easy layer excluding the film layer was hard, had a low thermal deformation temperature and strength, so the improvement in scratch resistance and surface compression properties was insignificant, and Comparative Example 5, in which a thick base layer was manufactured as a hard base layer, had poor processability. It can be seen that it is defective and the cutability is not excellent.

In addition, in Comparative Example 6 containing the acrylic resin in excess of a specific content in the easy layer and the film layer, and Comparative Example 7 including the acrylic resin in less than a specific content, it was confirmed that the processability was reduced and, in particular, the cutability of Comparative Example 6 was also reduced. can

On the other hand, Comparative Example 8 containing a plasticizer in excess of a specific content in the easy layer and the film layer did not improve scratch resistance and surface compression due to low heat deformation temperature and strength, and Comparative Example 9 containing a plasticizer in less than a specific content It can be confirmed that the workability and cutability are deteriorated.

1: tile flooring 10: ground floor
20: base layer 30: printed layer
40: film layer 50: UV coating layer

Claims (15)

the back layer sequentially from the bottom; base layer; printed layer; And as a tile flooring comprising a film layer,
The easy layer and the film layer are each a hard layer comprising 5-20 parts by weight of an acrylic resin and 1.5-20 parts by weight of a plasticizer with respect to 100 parts by weight of a polyvinyl chloride resin,
The base layer is a soft layer comprising 30-50 parts by weight of a plasticizer and 500-800 parts by weight of a filler based on 100 parts by weight of a polyvinyl chloride resin,
The polyvinyl chloride resin is a polyvinyl chloride tile flooring material having a polymerization degree of 650-890. delete The method of claim 1,
The acrylic resin is a polyvinyl chloride tile flooring material that is a random copolymer of methyl methacrylate and an acrylic monomer other than methyl methacrylate. 4. The method of claim 3,
The acrylic monomer is an alkyl acrylate monomer, an alkyl methacrylate monomer, or a mixture thereof. 4. The method of claim 3,
The acrylic resin is polyvinyl chloride tile flooring further comprising an unsaturated monomer. 6. The method of claim 5,
The unsaturated monomer is an unsaturated carboxylic acid, 1-alkene, branched alkene, acrylonitrile, vinyl ester, styrene, substituted styrene having an alkyl substituent in the side chain, substituted styrene having an alkyl substituent in the ring, halogenated styrene, maleic Polyvinyl chloride tile flooring which is one selected from the group consisting of acid derivatives and dienes. The method of claim 1,
The acrylic resin is a polyvinyl chloride tile flooring material that is a random copolymer of methyl methacrylate, n-butyl acrylate and styrene. The method of claim 1,
The acrylic resin is a polyvinyl chloride tile flooring material having a weight average molecular weight of 800,000-1,500,000 g/mol. The method of claim 1,
The acrylic resin is a polyvinyl chloride tile flooring material having a relative viscosity (η _Rel ) of 1-5 at 20-25°C. The method of claim 1,
The thickness of the easy layer and the film layer is each 0.1-0.5mm polyvinyl chloride tile flooring. delete The method of claim 1,
The film layer is a polyvinyl chloride tile flooring material having a glass transition temperature of 39-83 ℃. The method of claim 1,
The tile flooring material is a polyvinyl chloride tile flooring material having a Shore D hardness of 65-75. The method of claim 1,
A polyvinyl chloride tile flooring material having a thermal deformation temperature of 30-75°C measured in accordance with ISO 75-1 of the tile flooring material. The method of claim 1,
The strength (stiffness) of the tile flooring material is a polyvinyl chloride tile flooring material of 25-60gf·cm.

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