KR20160020634A - Glueless locking flooring material - Google Patents

Abstract

The present invention provides an unbonded flooring material. According to an embodiment of the present invention, the unbonded flooring material has excellent rigidity when compared to a thickness, has excellent coupling strength, has excellent heat resistance property, and has excellent stability for size. The flooring material includes a base material layer formed in a single layer. The base material layer includes: a thermoplastic resin; and an organic fiber dispersed in the thermoplastic resin. Both sides facing each other of the flooring material are a first side unit and a second side unit, and the flooring material has a first protrusion unit and a first groove unit on the first side unit. The flooring material has a second groove unit corresponding to the first protrusion unit, and a second protrusion unit corresponding to the first groove unit on the second side unit.

Description

Non-adhesive flooring {GLUELESS LOCKING FLOORING MATERIAL}

Non-adhesive flooring.

Flooring materials used in buildings such as homes and offices may be based on thermoplastic resins such as polyvinyl chloride (PVC). Recently, there has been a rapid growth in the market for a non-adhesive flooring material which is formed by joining flooring materials by joining and joining flooring materials by forming grooves on the flooring material without using an adhesive in the construction of a flooring material based on a thermoplastic resin. Such non-adhesive flooring materials should be easy to install, but also have excellent fastening strength and tensile load. On the other hand, a flooring material using polyvinyl chloride or the like has a low heat resistance, so that shrinkage may occur particularly in the case of a floor heating floor, and in particular, a fiber sheet or a fiber scrim It is common to separately prepare and laminate, or to introduce additives to prevent shrinkage. As described above, it is considered that non-adhesive flooring based on a thermoplastic resin is excellent in tensile load and fastening strength to a thickness and securing excellent heat resistance and dimensional stability against a heat source.

An embodiment of the present invention provides a non-adhesive floor material excellent in rigidity and fastening strength to thickness and excellent in heat resistance and dimensional stability.

In one embodiment of the present invention, a flooring material comprising a base layer formed of a single layer, wherein the base layer comprises a thermoplastic resin and organic fibers dispersed in the thermoplastic resin, And a bottom portion having a first protrusion and a first groove formed on the first side portion, the bottom portion having a second groove portion having a shape corresponding to the first protrusion on the second side portion, And a second protrusion having a shape corresponding to the one groove portion.

The bottom layer may have a total thickness of about 5.0 mm or less.

The substrate layer may have a thickness of from about 2.0 mm to about 3.5 mm.

The base layer may contain about 0.1 to about 10 parts by weight of the organic fibers per 100 parts by weight of the thermoplastic resin.

The thermoplastic resin may be selected from the group consisting of polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVF), chlorinated polyvinyl chloride (CPVC), polyvinyl alcohol (PVA), polyvinyl acetate And may include at least one selected from the group consisting of polyvinyl butyrate (PVB), polyethylene (PE), polypropylene (PP), and combinations thereof.

The organic fibers may include at least one selected from the group consisting of polyamide fibers, polyolefin fibers, polyester fibers, polyacrylic fibers, polyvinyl alcohol fibers, and combinations thereof.

The organic fibers may have an average diameter of about 2 [mu] m to about 20 [mu] m.

The organic fibers may have an average length of from about 1 mm to about 50 mm.

The base layer may be one in which the organic fibers are oriented.

The non-adhesive flooring material may further include a backing layer at a lower portion of the base material layer, and may further include a printing layer and a surface layer on the base material layer.

The base layer may have a tensile load of at least about 30 kgf.

The non-adhesive floor material may have a long side fastening strength of about 200N or more of one floor material and the other floor material.

The non-adhesive flooring material may have a short side bonding strength of about 200N or more of one flooring material and the other flooring material.

The non-adhesive flooring material exhibits excellent rigidity with respect to thickness, excellent bonding strength between the flooring materials, and excellent heat resistance and dimensional stability.

1 schematically illustrates a perspective view of a non-adhesive flooring according to one embodiment of the present invention.
2 schematically shows the first side portion and the second side portion.
Fig. 3 schematically shows a configuration in which one non-stick floor is fastened with another non-stick floor.
4 schematically shows a cross section of the substrate layer.
5 is a schematic cross-sectional view of the non-adhesive floor material taken along its lengthwise direction.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art to which the invention pertains. Only.

In order to clearly illustrate the features of the present invention, certain parts or thicknesses of the drawings have been represented by the same reference numerals throughout the specification. Hereinafter, the present invention will be described in detail with reference to the drawings.

One embodiment of the present invention is a flooring comprising a substrate layer formed of a single layer, wherein the substrate layer comprises a thermoplastic resin and organic fibers dispersed in the thermoplastic resin, Wherein the bottom portion is formed with a second groove portion having a shape corresponding to the first projecting portion on the second side portion and a second groove portion having a shape corresponding to the first projecting portion on the second side portion, And a second projecting portion having a shape corresponding to the groove portion.

1 schematically illustrates a perspective view of a non-adhesive flooring according to one embodiment of the present invention. The non-adhesive floor material is applied without using an adhesive. Referring to FIG. 1, the opposite side surfaces are the first side surface portion and the second side surface portion. Specifically, the first side surface portion of the two surfaces and the second side surface portion of the two surfaces . ≪ / RTI > Referring to FIG. 1, 'length' herein refers to a relatively longer side of the first side and second side, and 'width' refers to a relatively shorter side. If the lengths of the first side portion and the second side portion are the same, the 'length' and the 'width' may be arbitrarily referred to.

The non-adhesive floor material may be constructed by connecting a plurality of non-adhesive floor materials. Specifically, the first side portion of one bottom material may be combined with the second side portion of the other bottom material to form a long side or a short side side.

FIG. 2 is a longitudinal cross-sectional view of the non-adhesive floor material, specifically showing the first side portion and the second side portion. 2, the first side portion 110 includes a first protrusion 10, and the second side portion 120 includes a second groove portion having a shape corresponding to the first protrusion 10 20). The first side part 110 includes a first groove part 11 at an end of the first projecting part 10 that extends inwardly of the bottom member and the second side part 120 is connected to the first groove part 11) having a shape corresponding to the first protrusion (21). The first protrusion 10 engages with the second groove 20 and the first groove 11 engages with the second protrusion 21 so that the non-adhesive flooring can be connected and constructed without an adhesive , An excellent fastening strength can be secured.

Fig. 3 schematically shows a shape in which one non-stick floor is fastened to the other non-stick floor in the longitudinal or width direction. Referring to FIG. 3, the first projection 10 of the non-adhesive floor material can be fastened to the second groove portion 20 of the other non-adhesive floor material, and the first groove portion 11 of the non- And can be fastened to the second projection 21 of the other non-adhesive floor material. In this way, a plurality of non-adhesive flooring members can be fastened and bonded to each other to enable construction without an adhesive, and at the same time excellent rigidity and durability can be realized.

In the non-adhesive floor material, the first projecting portion and the second projecting portion may be manufactured in various shapes to improve the fastening strength depending on the application, and the same applies to the first groove portion and the second projecting portion.

The non-adhesive flooring material is applied without an adhesive, and it is an important problem to secure dimensional stability due to temperature change as compared with the adhesive flooring material fixed by an adhesive.

Generally, thermoplastic resins have low heat resistance. Therefore, in the case of a floor material using a substrate layer containing the same, a fiber sheet or a fiber cloth is laminated between a plurality of base layers in order to ensure dimensional stability and heat resistance. However, in the case of producing a floor material by laminating a fiber sheet or a fiber cloth between a plurality of base layers, a separate laminating equipments are required in the manufacturing process, so that the manufacturing cost of the floor material is increased and the overall thickness of the product is increased do. In addition, when the thickness of a plurality of base layers is reduced in order to form the thickness of the bottom material, the fiber sheet or the fiber cloth or the like is exposed to the outside to increase the defective processing rate, and problems such as distortion, ≪ / RTI >

To solve this problem, the non-adhesive flooring includes a base layer formed of a single layer, and the base layer may include a thermoplastic resin and organic fibers dispersed in the thermoplastic resin. The base layer is formed as a single layer, which means that the layer serving as the base layer is formed in only one layer in the non-adhesive flooring.

The non-adhesive flooring material can be made to have a thin thickness by including the base layer formed of a single layer, and the manufacturing cost can be reduced, and a favorable effect in distribution and construction can be obtained.

Further, the base layer includes a thermoplastic resin and organic fibers dispersed in the thermoplastic resin, whereby it is possible to secure excellent dimensional stability and heat resistance without preparing or laminating a separate fiber base paper or fiber sheet, The strength can be secured. In addition, manufacturing costs and manufacturing time can be saved.

Fig. 4 schematically shows a cross section of the base layer 1, and shows a cross section of the base layer 1 when the non-adhesive flooring 100 is cut in the longitudinal direction. The base layer (1) comprises a thermoplastic resin and organic fibers (A) dispersed in the thermoplastic resin, and the organic fibers (A) are evenly dispersed in the thermoplastic resin, And heat resistance can be ensured.

The non-adhesive flooring material may have a total thickness of about 5.0 mm or less, specifically about 4.0 mm or less. When the total thickness of the bottom material satisfies the above range, easiness of distribution and construction can be ensured, and manufacturing cost can be saved. In addition, the non-adhesive floor material can secure excellent working strength and bonding strength even in the above range of thickness by including the base layer.

2 and 3, the non-adhesive flooring material 100 is required to manufacture the first protrusion 10 and the first groove portion 11 in the first side portion 110 at the time of manufacture, The second groove portion 20 and the second projection portion 21 should be manufactured on the second side surface portion 120. Specifically, the non-adhesive floor material 100 includes a first protruding portion 10 and a first protruding portion 10 that are formed in the first side surface portion 110 and the second side surface portion 120, respectively, 11, the second trench 20, and the second projection 21, as shown in Fig. At this time, it is one of the important factors to secure an excellent processing strength while manufacturing the non-adhesive floor material to a thin thickness in the above range.

As described above, when the bottom layer includes a plurality of base layers and a fiber base fabric or a fiber sheet formed therebetween, the thickness thereof may be difficult to realize thinly. Further, when the thickness of a plurality of base layers is reduced in order to realize a thin thickness of such a bottom material, there is a possibility that a fiber cloth or a fibrous sheet is exposed and some tearing may occur when the working region such as a protruding portion and a groove portion is processed. In addition, this causes defects in fitting property when the protruding portion and the groove portion are fastened, resulting in lowering of the fastening strength. Further, the fiber fabric or fiber sheet is exposed to the outside, which may cause problems such as distortion, deviation, cracks, etc. during use after the construction of the flooring.

In contrast, the non-adhesive flooring material 100 can be manufactured to have a thickness in the above range by including the base material layer formed as a single layer. In spite of this thin thickness, the first projection 10, the first groove portion 11 ), The second groove portion 20 and the second projecting portion 21 can be secured and the defect rate can be minimized. In addition, it is possible to ensure excellent strength and rigidity during use despite the thinness of the above range through the base layer.

Referring to Fig. 4, the base layer 1 may have a thickness d1 of about 2 mm to about 4 mm. When the thickness (d1) of the base layer satisfies the above range, excellent strength can be ensured while not thickening the entire thickness of the non-adhesive flooring material, and excellent heat resistance and dimensional stability can be realized.

5 is a schematic cross-sectional view of a non-adhesive flooring according to an embodiment of the present invention taken along the long side. 5, the non-adhesive floor material 100 includes the base layer 1, and may further include a back layer 2 at the bottom of the base layer 1, 1, a printing layer 3 and a surface layer 3 may be further included.

The printing layer 3 imparts an aesthetic effect to the non-adhesive floor material. The printing layer 3 may be formed of various patterns or patterns on the base layer, or may be embossed or embossed. Also, they are manufactured using various colors and can be manufactured by a gravure printing or screen printing method.

The printing layer 3 may include the same thermoplastic resin as the base layer 1, and in this case, the adhesion with the base layer 1 is improved, and the durability of the non-adhesive flooring can be improved.

The surface layer 4 protects the print layer 3, thereby improving scratch resistance and surface properties of the non-adhesive floor material.

Specifically, the surface layer 4 is formed of a transparent resin, and the kind thereof is not particularly limited. For example, the surface layer 4 may be formed of a resin such as a polyvinyl chloride (PVC) resin, a urethane (meth) acrylate resin, , Silicone (meth) acrylate resin, (PVB polyvinyl butyral (PVB) resin, and combinations thereof).

If necessary, the surface layer 4 can be cured by ultraviolet rays, and in this case, the effect of improving the durability and the wear resistance can be obtained.

The back layer 2 is positioned below the base layer 1 to maintain the balance of the structure, and it is possible to prevent the non-adhesive floor material from bending or twisting.

 Specifically, the backside layer 2 may include thermoplastic resin and talc, and about 100 to about 300 parts by weight of the talc may be included in 100 weight parts of the thermoplastic resin.

The backside layer 2 may include the same thermoplastic resin as the base layer 1, and in this case, the adhesion between the backside layer and the base layer may be improved to improve the durability of the non-adhesive flooring.

Further, the thickness of the back layer 2 may be similar to the total thickness of the print layer 3 and the surface layer 4, for example, the difference may be about 0.3 mm or less, for example, 0.2 mm Lt; / RTI > When the difference between the thickness of the back layer 2 and the total thickness of the print layer 3 and the surface layer 4 satisfies the above range, it is possible to prevent the non-adhesive floor material from bending or twisting. Concretely, when the thickness of the back layer 2 is equal to the total thickness of the print layer 3 and the surface layer 4, this effect can be maximized.

Referring to FIG. 5, as described above, the non-adhesive floor material may have a total thickness d2 of about 5.0 mm or less, specifically about 4.0 mm or less. The total thickness (d2) of the bottom material satisfies the above range, so that the manufacturing cost can be saved and the ease of distribution and construction can be ensured. In addition, excellent work strength and fastening strength can be secured through the base layer 1 even in the above-mentioned range of thickness.

The base layer 1 includes a thermoplastic resin and an organic fiber (A). Specifically, about 0.1 to about 10 parts by weight of the organic fiber may be included in 100 parts by weight of the thermoplastic resin. When the organic fiber is contained in an amount of less than about 0.1 part by weight, the effect of improving the heat resistance and rigidity of the flooring material can not be obtained and it is difficult to realize the effect of improving the tensile load and the fastening strength. There is a possibility that the workability is lowered.

The thermoplastic resin may be, for example, polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVF), chlorinated polyvinyl chloride (CPVC), polyvinyl alcohol (PVA) But are not limited to, one or more selected from the group consisting of polyvinyl acetate (PVAc), polyvinyl butyrate (PVB), polyethylene (PE), polypropylene (PP), and combinations thereof.

Specifically, the thermoplastic resin may be polyvinyl chloride (PVC), or a resin mixed with polyvinyl chloride (PVC) and polyvinyl butyrate (PVB). In this case, a favorable effect can be obtained in terms of workability.

The organic fiber (A) may be contained in the base material layer (1) in a state of being dispersed in the thermoplastic resin, which can improve the strength of the non-adhesive floor material.

Specifically, the organic fibers may include at least one selected from the group consisting of polyamide fibers, polyolefin fibers, polyester fibers, polyacrylic fibers, polyvinyl alcohol fibers, and combinations thereof.

The polyamide-based fibers may include at least one member selected from the group consisting of aromatic polyamide fibers, nylon fibers, and combinations thereof. The polyolefin-based fibers may include polypropylene (PP) fibers, polyethylene (PE) Teflon fibers, and combinations thereof. In addition, the polyacrylic fiber may include at least one selected from the group consisting of polyacrylonitrile (PAN) fiber, modacryl fiber, and combinations thereof.

For example, the organic fibers may include polyamide-based fibers, and specifically include aromatic polyamide fibers. In this case, it is possible to obtain a great advantage of improving the mechanical strength and dimensional stability of the bottom material.

The organic fibers may have an average diameter of about 2 [mu] m to about 20 [mu] m. When the average diameter of the organic fibers is less than about 2 탆, it is difficult to realize the effect of improving the heat resistance and dimensional stability of the non-adhesive floor material and improving the tensile load and the fastening strength. When the average diameter is more than about 20 탆, The dispersibility and processability can be lowered during the production process.

In addition, the organic fibers may have an average length of about 1 mm to about 50 mm. When the average length of the organic fibers is less than about 1 mm, it is difficult to realize the effect of improving the dimensional stability. When the average length of the organic fibers is more than about 50 mm, the fibers are not uniformly dispersed in the thermoplastic resin during the production of the flooring. There is a possibility that the durability and the strength of the bottom material may be lowered.

The base layer includes a thermoplastic resin and an organic fiber, and the organic fiber is dispersed in the thermoplastic resin to have an orientation property. Since the organic fibers have an orientation property, the non-adhesive floor material including the base layer can realize excellent heat resistance and durability.

The fact that the organic fibers have orientation does not mean that all the organic fibers are parallel, but means that the fibers are arranged with directionality in any one specific direction.

For example, referring to FIGS. 1 and 5, the organic fibers of the substrate layer 1 may have an orientation on the long side of the non-adhesive floor material 100, Excellent heat resistance and dimensional stability can be realized.

The base layer is a liquid solvent having low volatility. The base layer may further include a plasticizer which facilitates processing by imparting soft physical properties to the thermoplastic resin and imparts flexibility to the bottom material.

Specifically, the plasticizer is selected from the group consisting of diisononyl phthalate (DINP), dioctyl phthalate (DOP), biphthalate-based dioctyl terephthalate (DOTP), aliphatic dibasic acid ester-based dioctyl adipate (DOA) And the like.

For example, the plasticizer may include dioctyl phthalate (DOP) or dioctyl terephthalate (DOTP), in which case the plasticizer may improve the dispersing effect of the organic fibers, The tensile load of the non-adhesive floor material including the non-adhesive floor material can be increased and excellent dimensional stability can be ensured.

The non-adhesive floor material includes a base layer containing a thermoplastic resin and organic fibers so as to have a strength suitable for processing the first projection and the first projection on the first side face and for processing the second projection and the second projection on the second side face . In addition, the non-adhesive floor material can secure a superior strength to the thickness by containing the base layer.

Specifically, the base layer may have a tensile load of at least about 30 kgf, for example, at least about 50 kgf. When the tensile load of the base layer satisfies the above range, the non-adhesive floor material including the base layer can exhibit excellent bonding strength and exhibit excellent strength and rigidity.

The non-adhesive flooring material is characterized in that one flooring material is fastened to and joined to the other flooring material. Specifically, the first projection of one flooring material is fastened to the second groove part of the other flooring material, And is fastened to the second projection of the other flooring.

At this time, the long side coupling strength of the one bottom material and the other bottom material may be about 200N or more, for example, about 380N or more. In addition, the short side tightening strength of the one bottom material and the other bottom material may be about 200N or more, for example, about 420N or more. The bonding strength in the longitudinal direction and the width direction of the bottom material satisfies the above range, so that the excellent durability and rigidity can be ensured even though the non-adhesive floor material is applied without the adhesive.

The 'clamping strength' means the magnitude of the tensile force at the moment when two flooring members are separated by applying a tensile force after one flooring member is fastened to the other flooring member. It can be seen that the larger the value, the more firmly the two flooring members are bonded . The fastening strength in the longitudinal direction means a fastening strength in the case of applying a tensile force after fastening the first side portion and the second side portion of the long side of the two bottoms, Means the fastening strength when a tensile force is applied after fastening the first side portion and the second side portion of the short side.

The non-adhesive flooring material includes the base material layer, and the base material layer can be produced in the following manner. Specifically, the base layer may be prepared by mixing and dispersing organic fibers in a thermoplastic resin to prepare a composition, followed by thermo-compression. At this time, the heat-pressing may be performed by a calendering process or a pressing process. For example, the base layer can be produced by heat-pressing through a calendering process. In this case, the organic fibers are easy to be oriented and advantageous for mass production of the non-adhesive flooring.

In addition, the composition for forming the base layer may contain at least one member selected from the group consisting of stabilizers, colorants, fillers, and combinations thereof, if necessary.

The stabilizer improves the thermal stability of the thermoplastic resin. The stabilizer is not particularly limited and includes, for example, Ba / Zn stearic acid, Ca / Zn stearic acid, Tin stearic acid, lead stearic acid, And the like. For example, the composition may include Ba / Zn-based stearic acid. In this case, the effect of improving the viscosity stability and thermal stability of the base layer can be realized.

The filler is added to increase the strength, heat resistance and durability of the bottom material and to reduce the cost. The type of the filler is not particularly limited. For example, talc, fly ash, blast furnace slag ), And combinations thereof.

The coloring agent means a coloring dye or pigment added to realize aesthetic effect and practical effect depending on the use of the flooring material. The flooring material may include various dyes, pigments and mixtures thereof depending on the use thereof .

The base layer is formed from a composition in which the organic fibers are mixed and dispersed in the thermoplastic resin itself, so that the non-adhesive flooring can include the base layer as a single layer, thereby reducing the defective ratio at the time of production and improving the durability and heat resistance Can be easily implemented.

Hereinafter, specific embodiments of the present invention will be described. However, the embodiments described below are only intended to illustrate or explain the present invention, and thus the present invention should not be limited thereto.

<Production Example>

Manufacturing example  One

A thermoplastic resin containing a polyvinyl chloride (PVC) resin (LS100) and a polyvinyl butyrate (PVB) resin (Scrap Co., Ltd., regenerated PVB resin) in a weight ratio of 95: 5, And 0.5 part by weight of an anionic aromatic polyamide fiber (Dupont, Kevlar). To the composition, 22 parts by weight of a plasticizer (NEO-T, APEX) and 270 parts by weight of calcium carbonate were further mixed. The above composition is kneaded in a banbury mixer for about 3 minutes to about 4 minutes and then heat-pressed at 160 ° C to 180 ° C using a calender process so that the aromatic polyamide fiber is oriented in the thermoplastic resin Layer.

Manufacturing example  2

Heat resistant nylon fiber was oriented in the thermoplastic resin in the same manner as in Preparation Example 1, except that 5 parts by weight of high heat-resistant nylon fiber was added to 100 parts by weight of the thermoplastic resin.

Manufacturing example  3

A thermoplastic resin containing a polyvinyl chloride (PVC) resin (LS100) and a polyvinyl butyrate (PVB) resin (Scrap Co., Ltd., regenerated PVB resin) in a weight ratio of 95: 5, , 22 parts by weight of an adherend plasticizer (NEO-T, aekyung) and 270 parts by weight of calcium carbonate. The above composition was kneaded in a banbury mixer for about 3 minutes to about 4 minutes, and then the base layer was formed by hot pressing at 160 ° C to 180 ° C using a calender process.

&Lt; Examples and Comparative Examples &

Example  1: 4.0T Non-adhesive  Manufacture of flooring

The base layer of Production Example 1 was prepared to a thickness of 3.36 mm, and a back layer containing polyvinyl chloride (PVC) resin was laminated to the bottom of the base layer by a roll plywood method to a thickness of 0.25 mm. Subsequently, a print layer containing polyvinyl chloride (PVC) resin was laminated on the base layer by a roll plywood method to a thickness of 0.09 mm, and a polyvinyl chloride (PVC) resin Was laminated to a thickness of 0.30 mm to prepare a flooring material having a total thickness of 4.0 mm. Subsequently, the first projecting portion and the first projecting portion were processed on the first side portion of the bottom material, and the second projecting portion and the second projecting portion were processed on the second side portion to produce a non-adhesive flooring having a total thickness of 4.0 mm.

Example  2: 3.2 T Non-adhesive  Manufacture of flooring

A non-adhesive flooring having a total thickness of 3.20 mm was prepared in the same manner as in Example 1, except that the base layer of Production Example 1 was produced to have a thickness of 2.56 mm.

Example  3: 3.2 T Non-adhesive  Manufacture of flooring

A non-adhesive flooring having a total thickness of 3.2 mm was prepared in the same manner as in Example 2, except that the base layer of Production Example 2 was produced to a thickness of 2.56 mm.

Comparative Example  1: Manufacture of flooring containing fiber cloth

The base layer of Production Example 2 was prepared to a thickness of 1.86 mm to provide a first base layer and a back layer of PVC was laminated to the bottom of the base layer by a roll plywood method to a thickness of 0.25 mm. Next, a glass fiber scrim made in the form of a mesh having a hole interval of 4 mm was laminated on the first base layer using glass fibers having a diameter of 14 탆. The base layer of Production Example 2 was laminated on the glass fiber mat with a thickness of 1.5 mm to laminate the second base layer. Subsequently, a print layer containing polyvinyl chloride (PVC) resin was laminated on the base layer to a thickness of 0.09 mm by a roll plywood method. A surface layer including a polyvinyl chloride (PVC) resin was laminated on the print layer by a roll plywood method to a thickness of 0.3 mm to prepare a bottom layer having a total thickness of 4.0 mm. Then, The protruding portion and the first groove portion were machined and the second groove portion and the second protruding portion were machined on the second side portion to produce a non-adhesive floor material having a total thickness of 4.0 mm.

<Evaluation>

Experimental Example  One: The base layer  Measurement of tensile load

All the base layers of Production Examples 1 to 3 were prepared to a thickness of 2 mm, and samples having a width of 20 mm and a length of 150 mm were produced. The tensile load of each sample was measured at a tensile speed of 200 mm / min using a tensile tester (M350-5kN, Testometric)

Experimental Example  2: Measurement of bonding strength of flooring

A sample having a width of 100 mm and a length of 100 mm was prepared for the non-adhesive flooring materials of Examples 1 to 3 and Comparative Example 1. For the sample, the first side portion of one bottom material was joined with the second side portion of the other bottom material, and the fastening strength and width of the long side were measured using a tensile tester (M350-5kN, Testometric) And the fastening strength of the short side was measured. Specifically, a tensile force of 0.5 mm / min was applied to the sample in the longitudinal direction and the width direction to measure the tensile force at the moment when the two floor materials were separated, and the fastening strength in the longitudinal direction and the fastening strength in the width direction were measured, 1.

Experimental Example  3: Measurement of dimensional stability of flooring

Samples having a width of 150 mm and a length of 1,219 mm were prepared for the non-adhesive flooring materials of Examples 1 to 3 and Comparative Example 1, respectively. Then, the length and width of the sample were measured at room temperature to determine initial dimensions, respectively. Thereafter, the sample was stored at 80 DEG C for 6 hours, and then stored at room temperature for 2 hours. Then, the length and width were measured, and the respective late dimensions were measured. Based on the initial dimensions and the latter dimensions, the dimensional change ratio in the longitudinal direction and the width direction of the flooring material was measured according to the following general formula (1). It can be seen that the smaller the dimensional change ratio is, the better the dimensional stability is.

[Formula 1]

Dimensional change ratio (%) = (Later dimension - Initial dimension) / Initial dimension x 100

The base layer
Tensile load [kgf] Fastening strength [N] Dimensional change rate [%] Lengthwise
(long side) Width direction
(short side) Lengthwise
(long side) Width direction
(short side) Example 1 57 450 450 0.05 0.06 Example 2 57 380 420 0.05 0.04 Example 3 44 350 410 0.07 0.08 Comparative Example 1 43 350 400 0.07 0.08

In Examples 1 to 3, a base layer containing a thermoplastic resin and an organic fiber was contained, and the tensile load of the base layer was 50 kgf or more. As a result, in Comparative Example 1 It can be seen that the non-adhesive flooring materials of Examples 1 to 3 exhibit excellent stiffness and bonding strength as compared with Comparative Example 1.

In the case of Examples 1 to 3, the base layer was included as a single layer, and in Examples 1 and 2, as compared with Comparative Example 1 comprising two or more base layers and a separate glass fiber base cloth, Or the thinner the thickness, the better the fastening strength in the longitudinal direction and the width direction, and the better the dimensional stability is. It can also be seen that, even in the case of Example 3, the bonding strength and the dimensional stability are similar or better than those of Comparative Example 1, even though the thickness is thinner. Thus, it can be seen that Examples 1 to 3 exhibit excellent physical properties while reducing the defective ratio in the production.

On the other hand, the base layers of Examples 1 and 2 include aromatic polyamide fibers, and Example 3 includes nylon fibers which are one of aliphatic polyamide fibers. In Examples 1 and 2, more excellent bonding strength and dimensional stability are realized as compared with Example 3. As a result, when organic fibers include aromatic polyamide fibers, excellent bonding strength and dimensional stability compared to the thickness .

The non-adhesive flooring material includes a base layer including a thermoplastic resin and an organic fiber in one layer, thereby facilitating the construction of the non-adhesive construction during the manufacturing process and reducing the defective rate. In addition, through the base layer, excellent rigidity and fastening strength can be realized in spite of a relatively thin thickness, and an effect of excellent heat resistance and dimensional stability can be obtained.

100: Non-adhesive flooring
110: first side portion
120: second side portion
10: first protrusion
11: first groove
20: second groove
21: second protrusion
1: substrate layer
2: backside layer
3: Printing layer
4: Surface protective layer
A: Organic fiber
d1: thickness of the base layer
d2: thickness of non-adhesive flooring

Claims (14)

A flooring comprising a substrate layer formed as a single layer,
Wherein the base layer comprises a thermoplastic resin and organic fibers dispersed in the thermoplastic resin,
Wherein the opposite side surfaces of the bottom material are a first side surface portion and a second side surface portion,
Wherein the bottom member forms a first projection and a first groove on the first side surface,
Wherein the bottom member has a second groove portion having a shape corresponding to the first projection portion and a second projection portion having a shape corresponding to the first groove portion on the second side surface portion
Non adhesive flooring.
The method according to claim 1,
The flooring has a total thickness of 5.0 mm or less
Non adhesive flooring.
The method according to claim 1,
Wherein the base layer has a thickness of 2.0 mm to 3.5 mm
Non adhesive flooring.
The method according to claim 1,
Wherein the base layer contains 0.1 to 10 parts by weight of the organic fibers per 100 parts by weight of the thermoplastic resin
Non adhesive flooring.
The method according to claim 1,
The thermoplastic resin may be selected from the group consisting of polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVF), chlorinated polyvinyl chloride (CPVC), polyvinyl alcohol (PVA), polyvinyl acetate At least one member selected from the group consisting of polyvinyl butyrate (PVB), polyethylene (PE), polypropylene (PP), and combinations thereof
Non adhesive flooring.
The method according to claim 1,
Wherein the organic fibers include at least one selected from the group consisting of polyamide fibers, polyolefin fibers, polyester fibers, polyacrylic fibers, polyvinyl alcohol fibers, and combinations thereof
Non adhesive flooring.
The method according to claim 1,
Wherein the organic fiber comprises an aromatic polyamide-based fiber
Non adhesive flooring.
The method according to claim 1,
The organic fibers have an average diameter of 2 to 20 [micro] m
Non adhesive flooring.
The method according to claim 1,
The organic fibers have an average length of 1 mm to 50 mm
Non adhesive flooring.
The method according to claim 1,
Wherein the base layer is a layer in which the organic fibers are oriented
Non adhesive flooring.
The method according to claim 1,
Further comprising a backing layer under the substrate layer,
Further comprising a printing layer and a surface layer on the base layer
Non adhesive flooring.
The method according to claim 1,
The base layer has a tensile load of 30 kgf or more
Non adhesive flooring.
The method according to claim 1,
The long side fastening strength of one flooring material and the other flooring material is not less than 200 N
Non adhesive flooring.
The method according to claim 1,
The short side tightening strength of one flooring material and the other flooring material is not less than 200 N
Non adhesive flooring.

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