KR20160038196A - Eco-friendly floating type floor material - Google Patents

Abstract

The present invention provides an environmentally friendly flooring material capable of being installed without an adhesive including a transparent layer formed by extruding, calendaring, or blow-molding a composition containing a crystalline polylactic acid resin. A non-isothermal crystallization half-life (t_1/2) of the crystalline polylactic acid resin lasts for 10-10^3 minutes. The environmentally friendly nonslip flooring material contains 5-65 wt% of the crystalline polylactic acid resin. A first fitting protrusion unit and a first insertion groove unit are formed in two lateral surfaces of the flooring material. A first fitting protrusion unit corresponding to the first insertion groove unit and a second insertion groove unit corresponding to the first fitting protrusion unit are formed in the remaining two lateral surfaces of the flooring material. An embodiment of the present invention provides the environmentally friendly flooring material capable of being installed without an adhesive; and provides excellent slip preventing performance, excellent machinability, and excellent restoring force.

Description

{ECO-FRIENDLY FLOATING TYPE FLOOR MATERIAL}

Friendly non-stick construction type flooring.

BACKGROUND ART Floor materials using petroleum resins such as polyvinyl chloride (PVC) are widely used as flooring in buildings such as houses, mansions, apartments, offices, and shops. Such a bottom material is manufactured by extrusion method, car rendering or the like using a resin such as polyvinyl chloride (PVC). However, since the raw materials are obtained entirely from crude oil, which is a limited resource, it is expected that problems such as difficulty in supplying raw materials in the future due to depletion of petroleum resources are expected to occur. In addition, the dismantled flooring material is treated by landfill or incineration method. However, the landfill method has a problem that the flooring material takes a long time to be completely decomposed, and the incineration method generates harmful dioxins to the human body, There is a problem that secondary environmental pollution which pollutes environment and damages surrounding animals or plants is caused by emission of a large amount of contaminating substances.

Therefore, although the flooring material is manufactured using polylactic acid resin, which is a biodegradable material, there is a problem that the molding loss due to extrusion molding or car rendering method is poor due to poor workability and the raw material adheres to the manufacturing apparatus . In addition, due to the winter heating, the viscosity and elasticity of the flooring material greatly changes and the restoring force is lowered, so that the floor is partially recessed and the flat floor condition can not be maintained for a long time.

Also, in the process of applying the flooring material, the adhesive is applied to the finished surface of the flooring material and adhered thereto. The components of the adhesive are harmful to the human body and pollute the environment.

In one embodiment of the present invention, there is provided an environmentally friendly non-adhesive flooring material which realizes excellent biodegradability, excellent processability, low material loss rate, and excellent restoring force.

In one embodiment of the present invention, a flooring material comprising a transparent layer formed by extrusion molding, car rendering or blow molding a composition comprising a crystalline polyphasic acid resin, wherein the non-isothermal crystallization rate index ( _{t 1/2) (non-} isothermal crystallization half-life) is from about 10 minutes to about 10 ³ minutes, and the amount of the crystalline polylactic acid resin, from about 5% to about 65% by weight, and two of the sides of said bottom ash Wherein the first insertion protrusion and the first insertion recess are formed on the side surface and the second insertion protrusion corresponding to the first insertion recess and the second insertion recess corresponding to the first insertion protrusion are formed on the other two side surfaces, And provides a construction type flooring.

The first fitting protrusion and the second fitting groove may be formed on two side surfaces of the side surface of the bottom material.

The first and second insertion protrusions and the first insertion protrusions may be engaged with each other so that the first insertion protrusions and the first insertion recesses are engaged with each other.

Wherein at least one fine protrusion or at least one fine groove is formed in both of the first fitting protrusion and the second fitting protrusion, and in both of the first insertion groove and the second insertion groove, At least one micro-groove or at least one micro-projection may be formed.

The crystallization rate constant calculated according to the Abrami spinning formula of the crystalline polyunsaturated resin may be from about 0.001 to about 3.12.

The viscosity change rate of the composition according to the following equation 1 may be from about 2% to about 20%

 [Equation 1]

Viscosity change rate (? V,%) = (Vf-Vi) / Vix100

In the above formula, Vi is the viscosity at the time when the temperature is elevated from the predetermined temperature and reached 160 ° C, and Vf is the viscosity at the time when the temperature is maintained at 160 ° C for 10 minutes from the point when the temperature reaches 160 ° C.

The tan δ measured for the transparent layer at a temperature of from about 80 ° C. to about 140 ° C. may be from about 0.1 to about 1.0.

The weight ratio of L-lactic acid to D-lactic acid among the total polymerizable compounds constituting the crystalline polyphosphoric acid resin may be about 1: 0.01 to about 1: 0.12.

The content of D-lactic acid in the total polymerizable compound constituting the crystalline polyphosphoric acid resin may be about 1 wt% to about 10 wt%.

The composition may or may not further comprise an amorphous poly (lactic acid) resin.

When the composition further comprises an amorphous poly (lactic acid) resin, the weight ratio of the crystalline poly (lactic acid) resin to the amorphous poly (lactic acid) resin may be about 1:19 to less than about 100: 0.

When the crystalline polyphasic acid resin has a molecular weight distribution of from about 1.7 to about 2.2 and the composition further comprises an amorphous polyphasic acid resin, the molecular weight distribution of the amorphous polyphasic resin may be from about 1.5 to about 2.1.

Wherein the crystalline polyphasic acid resin has a weight average molecular weight of about 160,000 g / mol to about 250,000 g / mol,

When the composition further comprises an amorphous poly lactic acid resin, the weight average molecular weight of the amorphous poly lactic acid resin may be about 160,000 g / mol to about 250,000 g / mol.

The melt index of the transparent layer may be from about 2 g / 10 min to about 8 g / 10 min according to the conditions of ASTM D1238.

The composition may further comprise at least one selected from the group consisting of a plasticizer, a melt strength enhancer, a lubricant, and other additives.

The plasticizer content may be up to about 20% by weight.

The transparent layer may further comprise at least one selected from the group consisting of a print layer, a random layer of a chip, a white layer, a dimensionally stable layer, a base layer, a balance layer and a combination thereof on the lower surface of the transparent layer.

Wherein the environmentally friendly non-adhesive flooring material is a transparent layer / a print layer or a chip; a laid layer / a white layer / a base layer; Or a transparent layer / a print layer or a chip; a laid layer / a white layer / a dimensionally stable layer / a base layer; Or a transparent layer / a print layer or a chip; a laid layer / a white layer / a base layer / a balance layer; Or a laminate including a structure of a transparent layer / a print layer or a laminate layer of a chip / a white layer / a dimensionally stable layer / a base layer / a balance layer.

At least one of the print layer, the raid layer as the chip, the white layer, the dimensional stability layer, the base layer, and the balance layer may include the crystalline polyphthalic acid resin, the amorphous polyphthalic acid resin, or both.

Environmentally friendly, non-adhesive construction floors can achieve excellent biodegradability, good processability, low material loss rates, and excellent resilience.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view schematically showing a cross section of an environmentally friendly non-adhesive type flooring according to an embodiment of the present invention. FIG.
FIG. 2 is a schematic view schematically showing a cross-section of the environmentally-friendly non-adhesive construction type floor material further comprising a printing layer, a white layer, a dimensionally stable layer, a base layer and a balance layer.
3 is a schematic plan view of the eco-friendly non-adhesive construction floor material.
4 is a cross-sectional view schematically showing a connection structure in a state in which an environmentally friendly non-adhesive flooring material according to Embodiment 1 is applied.
5 is a cross-sectional view schematically showing a connection structure in a state in which an environmentally friendly non-adhesive flooring material according to a second embodiment is applied.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification. In the drawings, the thickness is enlarged to clearly represent the layers and regions. In the drawings, for the convenience of explanation, the thicknesses of some layers and regions are exaggerated.

Hereinafter, the formation of any structure in the "upper (or lower)" or the "upper (or lower)" of the substrate means that any structure is formed in contact with the upper surface (or lower surface) of the substrate However, the present invention is not limited to not including other configurations between the substrate and any structure formed on (or under) the substrate.

In one embodiment of the present invention, a flooring material comprising a transparent layer formed by extrusion molding, car rendering or blow molding a composition comprising a crystalline polyphasic acid resin, wherein the non-isothermal crystallization rate index ( _{t 1/2) (non-} isothermal crystallization half-life) is from about 10 minutes to about 10 ³ minutes, and the amount of the crystalline polylactic acid resin, from about 5% to about 65% by weight, and two of the sides of said bottom ash Wherein the first insertion protrusion and the first insertion recess are formed on the side surface and the second insertion protrusion corresponding to the first insertion recess and the second insertion recess corresponding to the first insertion protrusion are formed on the other two side surfaces, And provides a construction type flooring.

The polylactic acid resin is, for example, an eco-friendly resin produced by lactic acid fermentation of vegetable starch or a polylactic acid resin which is generally crystallized at a processing temperature range due to a slower crystallization rate than other types of resins used for flooring Is low. Accordingly, since the viscosity of the composition containing the same can be easily varied within a relatively wide range, the molding processability is very low, so that the molding is not smoothly proceeded to a specific shape, or the productivity is low due to high raw material loss rate due to adherence to a manufacturing apparatus. There is a problem.

Further, even after the product molding of the poly (lactic acid) resin as the bottom material is completely completed, the crystallization of the poly (lactic acid) resin is not sufficiently progressed, and the crystallization progresses further in the course of use so that the physical properties of the bottom material can easily be changed. Is low in heat resistance and low in restitution force, so that the pressing of the flooring material easily occurs at a high temperature such as a winter heating temperature and thus the durability is insufficient.

Such a poly (lactic acid) resin may be formed by polycondensation of monomers containing lactic acid, for example, by polycondensation reaction of L-lactic acid and D-lactic acid, but is not limited thereto .

In addition, when the flooring material is not fixed with an adhesive or the like, the flooring material is pushed and lifted. To solve this problem, when a flooring material is applied with an adhesive or the like, volatile organic compounds are generated and are very harmful to the human body and the environment.

Thus, in one embodiment, the content of the non-isothermal crystallization rate index (t _1/2) and at the same time about 10 minutes to form a lower level of from about 10 ^thirds of the crystalline polylactic acid resin to about 5 wt% To about 65% by weight, the viscosity change rate of the composition comprising the crystalline polyunsaturated resin can be advantageously realized at an appropriately low level of about 2% to about 20%, as described below.

Accordingly, the crystallization of the crystalline polyphasic acid resin proceeds at an appropriate rate at a suitable temperature, and the molding processability during extrusion molding, car-rendering, or blow molding of the composition containing the crystalline polyphasic acid resin is effectively improved, And productivity can be increased, so that excellent processability and excellent economical efficiency can be realized.

At the same time, since the crystallization is sufficiently advanced in the finished product, crystallization does not proceed further in the course of the subsequent use, so that the physical properties of the environmentally friendly non-adhesive floor coating material are maintained at a uniform level, and the heat resistance at high temperature is high, The pressing force of the bottom material does not easily occur, so that the flat bottom shape is maintained for a long time, thereby realizing long-term uniformity of physical properties and excellent durability.

Further, in the side surface of the environmentally-friendly non-sticking type floor material, the fitting protrusions and the insertion grooves are formed on two side surfaces of the side surface of the bottom material, and the fitting protrusions and the insertion grooves corresponding to the other two sides are formed, It can be fixed by interlocking, thereby realizing a better environment friendliness and effectively improving the sliding and lifting of the flooring.

In addition, as described above, the eco-friendly non-adhesive type flooring material can be further improved in workability, so that the shape of the fitting protrusions and the insertion groove portions can be more easily formed, and the fixing can be firmly secured.

FIG. 1 schematically shows a cross-section of an environmentally friendly non-adhesive type flooring material 100 according to an embodiment of the present invention.

Wherein the environmentally friendly non-adhesive floor coating material (100) is a flooring material comprising a transparent layer formed by extrusion molding, car rendering or blow molding a composition comprising a crystalline polyphasic acid resin, wherein the non- the rate index _{(t 1/2) (non} -isothermal crystallization half-life) of about 10 minutes to about 10 ³ minutes, and the amount of the crystalline polylactic acid resin, from about 5% to about 65% by weight, the side of the floor And a second insertion protrusion corresponding to the first insertion recess and a second insertion recess corresponding to the first insertion protrusion are formed on the other two side surfaces of the first insertion protrusion and the second insertion protrusion, .

The first fitting protrusion and the second fitting groove may be formed on two side surfaces of the side surface of the bottom material. Accordingly, the second fitting protrusions and the second fitting recesses can be formed on the other two side surfaces perpendicular to each other.

For example, the side surface of the bottom material may include longitudinal side surfaces and width side surfaces, and the two side surfaces perpendicular to each other may be longitudinal side surfaces and lateral side surfaces.

Thereby, the first fitting projection and the first fitting groove are formed on both the one longitudinal side face and one widthwise side, and the second fitting protrusion and the second insertion protrusion are formed on both the other longitudinal side face and the other lateral side face, And the second insertion groove are formed, so that the environmentally friendly non-adhesive flooring materials 100 can be interlocked in the longitudinal direction and the width direction.

That is, when the plurality of flooring materials are to be constructed, the first and second insertion protrusions and the first insertion protrusions may be engaged so that the first and second insertion protrusions and the first insertion recesses are engaged with each other without using an adhesive, As a result, they can be interlocked and fixed without adhesives, thereby realizing better environmental friendliness and effectively improving the sliding and lifting of the flooring.

Referring to FIG. 3, 'longitudinal direction' herein refers to a relatively longer side of the four sides of the environmentally-friendly non-stick construction floor material 100, and 'width' refers to a relatively shorter side do. The 'length' and the 'width' may be arbitrarily referred to when the lengths of the four sides of the environmentally-friendly non-sticky flooring 100 are all the same.

3, the first fitting protrusion 301 and the first insertion groove 302 may have a shape in which the upper surface is planar and the lower surface includes protrusions and grooves, and the second The fitting protrusion 301 'and the second insertion groove 302' may have a shape in which the upper surface includes protrusions and grooves, and the lower surface is planar, but is not limited thereto.

In one embodiment, at least one fine protrusion or at least one fine groove is formed in both of the first fitting protrusion and the second fitting protrusion, and the fine protrusion or the second protrusion is formed in both of the first insertion groove and the second insertion groove. At least one micro-groove or at least one micro-projection corresponding to the micro-grooves may be formed to firmly connect the eco-friendly non-adhesive flooring material 100.

In addition, the workability of the environmentally-friendly non-adhesive type floor material 100 can be improved and the shape of the fine protrusions and the fine grooves can be formed more precisely, and the environmentally non- .

The first and second fitting protrusions; The first and second insertion grooves; The fine protrusions; And the fine grooves may be formed in a shape known in the art so as to be interlockingly connected when the floor material 100 is installed and may be formed into various shapes according to the purpose and function of the invention and are not particularly limited Do not.

In one embodiment, the non-isothermal crystallization rate index (t _1/2) is then heated to the crystalline polylactic acid resin melt at a certain temperature of a temperature above the melting temperature and held for a certain time at the specified temperature, then the Crystallization of the crystalline polyphasic acid resin at a specific temperature while cooling to a specific temperature among temperatures lower than the crystallization temperature at a cooling rate of about 2.5 DEG C / min, about 5 DEG C / min, about 10 DEG C / min, State, that is, the time taken to reach the degree of semi-crystallization. Non-isothermal crystallization rate index (t _1/2) of the crystalline polylactic acid resin is specifically, can be measured under the conditions of a cooling rate of about 2.5 ℃ / min.

Specifically, in this specification, were measured by using a differential scanning calorimeter (Differential Scanning Calorimetry, DSC) of the non-isothermal crystallization rate index (t _1/2), for example, the crystalline polylactic acid resin, from about 10 ℃ / min to a temperature of about 250 ° C, and then the crystalline polyphasic acid resin in a molten state was cooled to about 0 ° C at a cooling rate of about 2.5 ° C / min to measure the time to reach the half crystallinity by non-isothermal crystallization Although by definition a non-isothermal crystallization rate index (t _1/2), but is not limited to the above-described measurement method.

The crystalline polyester-isothermal crystallization rate index _{(t 1/2) (non} -isothermal crystallization half-life) of the lactic acid resin is from about 10 to about 10 minutes can be ³ minutes. By having a non-isothermal crystallization rate index within the above range, the crystallization rate of the crystalline polyphosphoric acid resin can be controlled at a suitable rate at a suitable temperature, so that the molding processability during the extrusion molding, car rendering or blow molding of the composition is effectively improved, It is possible to realize excellent processability and excellent economical efficiency.

In addition, the composition may comprise, for example, from about 5% to about 65% by weight of the crystalline polyphthalic acid resin, and more specifically from about 10% to about 50% by weight. As described above, since the crystallization rate of the crystalline polyphasic acid resin can be controlled at a suitable rate by appropriately adjusting the crystallization rate of the crystalline polyester resin, May not proceed any further. Accordingly, since the physical properties of the environmentally-friendly non-adhesive type floor material 100 are maintained at a uniform level and the heat resistance at high temperature is high, so that the restoring force is increased, so that the pressing of the floor material does not easily occur, and the flat bottom shape is retained for a long time Uniformity of excellent physical properties for a long period of time and excellent durability can be realized.

The crystallization rate index (t _1/2) of the crystalline polylactic acid resin by the US Abraham equation (Equation Avrami) crystallization rate constant (rystallization rate constant) is substituted by a calculation to be about 0.001 to about 3.12. By having a crystallization rate constant within the above range, the viscosity change rate of the composition can be reduced to effectively improve the molding processability in the extrusion molding, car rendering or blow molding process, thereby increasing the workability of the composition and reducing the material loss rate Excellent economical efficiency can be realized. Specifically, when the crystallization rate constant is greater than about 3.12, the phenomenon of sticking at a processing temperature increases during extrusion molding, car rendering, or blow molding to increase the material loss rate. When the crystallization rate constant is less than about 0.001, the fluidity at the processing temperature is too high, It is difficult to mold into shape.

The Abraham equation can be defined as:

[Equation 1]

Log (-ln (1-X _t )) = logK _n + _n logt

Wherein X _t is a volume fraction of the crystallized phase, n is an avrami index, t is a crystallization rate index, and K _n is a crystallization rate constant. Thus, the crystallization rate constant can thus be calculated using the Abraham equation according to methods known in the art.

Wherein the composition has a viscosity change rate of from about 2% to about 20% according to the following formula 2:

[Equation 2]

Viscosity change rate (? V,%) = (Vf-Vi) / Vix100

In the above equation, Vi is the viscosity at the time when the temperature is elevated from the predetermined temperature and reaches about 160 DEG C, and Vf is the viscosity at the time when the temperature is reached at about 160 DEG C and held at about 160 DEG C for about 10 minutes. Specifically, Vi means a time point at which the temperature of the composition reaches a stable temperature of about 160 ° C, and the temperature of the composition reaches a temperature of about 160 ° C to reach a state having a uniform overall viscosity.

In order to stably reach the temperature of the composition at the time of measuring Vi, the rate of temperature increase may be, for example, about 10 ° C / min, but depending on the specific composition of the composition, And can be appropriately changed within a range that can be achieved, and is not particularly limited.

Also, the viscosity change rate of the composition may be, for example, from about 2% to about 20%, and more specifically from about 2% to about 15%. By having the viscosity change ratio within the above range, the viscosity can be more uniformly maintained at the processing temperature of extrusion molding, car drawing or blow molding, effectively improving the molding processability, thereby increasing the workability of the composition and reducing the material loss rate. .

Floor materials formed using a composition containing a poly (lactic acid) resin generally have poor heat resistance, so that a change in physical properties at a high temperature such as a heating temperature in the winter is greatly changed, resulting in reduced restorative force and easy pilling.

Thus, one embodiment in, the amount of non-isothermal crystallization rate index (t _1/2) and at the same time about 10 minutes to limit the suitably low level of about 10 ^thirds of the crystalline polylactic acid resin, about 5, as described above To about 65% by weight, such that the tan δ measured for the transparent layer 110 at a temperature of about 80 캜 to about 140 캜 may be from about 0.1 to about 1.0. By keeping the tan δ at a uniform level within a narrow range of about 0.1 to about 1.0 at the high temperature in the above range, the change in the physical properties of the environmentally friendly non-adhesive flooring material 100 can be effectively suppressed and the pressing phenomenon can be improved, By increasing the restoring force of the environmentally friendly non-adhesive type flooring material 100, the flat bottom shape can be maintained for a long time, thereby realizing excellent durability for a long period of time.

Specifically, the tan delta can be obtained from the result of viscoelasticity measured at a temperature of about -70 DEG C to about 150 DEG C, at a frequency of 1 Hz and at a heating rate of 3 DEG C / min, Lt; RTI ID = 0.0 > tan < / RTI > at temperatures as low as above, the physical properties can be maintained at a uniform level. Further, the maximum value of tan? Obtained from the result of the viscoelasticity may be, for example, from about 1.0 to about 2.5, and the maximum value may be within a temperature range of about 50 占 폚 to about 80 占 폚.

The melt index of the transparent layer 110 may be, for example, about 2 g / 10 min to about 8 g / 10 min according to the conditions of ASTM D1238, and specifically about 3 g / 10 min to about 7 g / May be ten minutes. The molded eco-friendly non-adhesive type flooring material 100 can have excellent mechanical properties while having a melt index within the above range to facilitate molding of the flooring material during extrusion molding, car rendering, or blow molding, thereby realizing excellent workability.

The weight ratio of L-lactic acid to D-lactic acid among the total polymerizable compounds constituting the crystalline polyphosphoric acid resin may be about 1: 0.01 to about 1: 0.12. By having the weight ratio within the above range, the crystalline polyphasic acid resin can be formed with regular orientation and more easily arranged in the process of crystallization, and the crystallization rate of the crystalline polyphasic acid resin can be adjusted to a low level, It is possible to further suppress the change in the physical properties of the environmentally-friendly non-sticky flooring material 100 at a high temperature while further decreasing the viscosity change rate of the composition.

The content of the D-lactic acid among the total polymerizable compounds constituting the crystalline polyphosphoric acid resin may be about 1 wt% to about 10 wt%. By including the D-lactic acid in the weight range within the above range, the crystallization rate of the crystalline polyphosphoric acid resin can be controlled to a low level, and thereby the viscosity of the composition can be further reduced, 100) can be further suppressed.

In one embodiment, the composition may or may not include an amorphous poly (lactic acid) resin.

When the composition further comprises the amorphous polyphasic acid resin, the weight ratio of the crystalline polyphasic acid resin to the amorphous polyphasic acid resin may be, for example, from about 1:19 to less than about 100: 0, 1: greater than 4 to less than about 100: greater than 0.

Thus, when the composition does not contain the amorphous polylactic acid resin or contains the amorphous resin, the viscosity change ratio according to the formula 2 of the composition may be appropriately adjusted to be about 2% to about 20% The viscosity can be more uniformly maintained at the processing temperature of the extrusion molding, car rendering or blow molding, thereby effectively improving the molding processability, thereby increasing the workability of the composition and reducing the material loss rate. Can be implemented.

When the crystalline polyphasic acid resin has a molecular weight distribution of from about 1.7 to about 2.2 and the composition further comprises an amorphous polyphasic acid resin, the molecular weight distribution of the amorphous polyphasic resin may be from about 1.5 to about 2.1. By having the molecular weight distribution within the above range, it is possible to realize the necessary mechanical properties while easily forming the bottom material by properly controlling the melt viscosity and the melt strength during the extrusion molding, car rendering or blow molding of the composition including the above.

The molecular weight distribution can be defined as a value indicating the distribution of the molecular weight, which is a value obtained by dividing the weight average molecular weight by the number average molecular weight. When the molecular weight distribution is smaller than the above range, deformation of the flooring material easily occurs and durability is lowered. When the molecular weight distribution is larger than the above range, the molding processability of the composition is significantly deteriorated.

In one embodiment, when the crystalline polyunsaturated fatty acid resin has a weight average molecular weight of about 160,000 g / mol to about 250,000 g / mol and the composition further comprises an amorphous poly (lactic acid) resin, the weight average molecular weight of the amorphous poly From about 160,000 g / mol to about 250,000 g / mol. By having the weight average molecular weight within the above range, the viscosity change rate of the composition is reduced to a low level as described above, and the molding processability is further improved, and at the same time, the change in physical properties of the environmentally- . In addition, resistance to surface friction and moisture is improved, and excellent abrasion resistance and hydrolysis resistance can be realized.

Wherein the crystalline polyphasic acid resin has a number average molecular weight of about 80,000 g / mol to about 120,000 g / mol, and when the composition further comprises an amorphous polyphasic acid resin, the amorphous polyphasic acid resin has a number average molecular weight of about 90,000 g / mol To about 130,000 g / mol. By having the number average molecular weight within the above range, the molecular weight distribution is formed at the level within the above-mentioned respective ranges together with the weight average molecular weight within the above range, whereby the melt viscosity and the melt strength of the composition can be appropriately controlled, Can be implemented.

The composition may further comprise at least one selected from the group consisting of a plasticizer, a melt strength enhancer, a lubricant, and other additives.

As the plasticizer, eco-friendliness can be achieved by using, for example, a benzoate-based, citrate-based, phosphate-based plasticizer and the like. The plasticizer may also comprise up to about 20% by weight. As described above, since the composition is improved in molding processability, the plasticizer is not contained or the content of the plasticizer is less than about 20% by weight, so that the bleeding phenomenon of the plasticizer is effectively suppressed. The compatibility with the component can be maintained at a good level and desired physical properties can be easily realized.

The acrylic copolymer may be used in an amount of about 0.1 to about 20 parts by weight per 100 parts by weight of the total polylactic acid resin combined with the crystalline polyphasic acid resin and the amorphous polylactic acid resin By weight to improve the melt strength or heat resistance, thereby enabling car rendering and press processing.

The lubricant may be contained in a proportion of about 0.01 to about 10 parts by weight based on 100 parts by weight of the total polylactic acid resin combined with the crystalline polyphasic acid resin and the amorphous polyphasic acid resin, It is possible to effectively prevent the rolls or presses from being adhered to each other. The type of the lubricant is not particularly limited, but it can be eco-friendly including an environmentally friendly higher fatty acid. Specifically, stearic acid which is a saturated higher fatty acid having 18 carbon atoms can be used.

The transparent layer 110 may be formed from the composition and finally formed into a film or a sheet using, for example, extrusion molding, car rendering, or blow molding.

In addition, the transparent layer 110 may have a thickness of about 0.05 mm to about 1.0 mm and may have a thickness within the above range, thereby preventing the thickness of the environmentally friendly non-adhesive flooring material 100 from being excessively increased, It is possible to sufficiently protect the pattern or pattern of the printed layer or the chip inlay layer which is laminated on the lower side.

The transparent layer 110 may further include at least one selected from the group consisting of a print layer, a chip layer, a white layer, a dimensionally stable layer 140, a base layer, a balance layer, and a combination thereof on the lower surface of the transparent layer 110.

For example, the environmentally friendly flooring material may include a transparent layer / a print layer or a chip, a laid layer / a white layer / a base layer; Or a transparent layer / a print layer or a chip; a laid layer / a white layer / a dimensionally stable layer / a base layer; Or a transparent layer / a print layer or a chip; a laid layer / a white layer / a base layer / a balance layer; Or a laminate including a structure of a transparent layer / a print layer or a laminate layer / a white layer / a dimensionally stable layer / a base layer / a balance layer which is a chip, but the present invention is not limited thereto. Further, a surface treatment layer may be further formed on the upper surface of the transparent layer.

FIG. 2 is a plan view of the surface treatment layer 170, the transparent layer 110, the print layer 120, the white layer 130, the dimensionally stable layer 140, the base layer 150 and the balance layer 160, Of the environmentally friendly flooring 100 '. The print layer 120 may be replaced with a layer of a randomly oriented layer according to the purpose and function of the invention.

Hereinafter, each layer constituting the eco-friendly floor material 100 'will be described. Wherein at least one of the print layer 120, the raid layer, the white layer 130, the dimension stabilizing layer 140, the base layer 150, and the balance layer 160 is formed of the crystalline polyunsaturated resin, The amorphous polyphthalic acid resin, or both of them, and thereby can realize excellent environmental friendliness, excellent processability, low material loss rate and excellent restoring force at the same time.

In addition, each of the layers may further include at least one selected from the group consisting of a melt strength enhancer, a lubricant, and other additives, and the content thereof may be appropriately adjusted according to the properties and functions of the respective layers. no.

The surface treatment layer 170 is formed on the surface of the print layer 120 or the chip 130 for the purpose of improving the surface quality such as scratch resistance and abrasion resistance of the environmentally friendly surface layer 100 ' May be formed on the laid layer. The surface treatment layer 170 may be formed by applying an ultraviolet curable composition known in the art such as, for example, a urethane acrylate-based UV curable composition onto the print layer 120 or a layer of the present invention, But is not limited thereto.

As described above, the transparent layer 110 protects patterns, patterns, and the like formed on the print layer 120 or the random layer, which is the chip, and is formed on the print layer 120 or the random layer, which is the chip.

The print layer 120 may be formed by applying a pattern to the surface of the white layer 130 stacked on the bottom in various ways such as transfer printing, gravure printing, screen printing, offset printing, rotary printing, or flexo printing have.

The chip inlay layer may be formed to include chips made of poly (lactic acid) resin or separate chips such as perfume chips, or the chip inlay layer may include wood chips or the like instead of a separate chip , But it is not limited to such a configuration that the chip appears to be embedded when viewed from the surface of the environmentally friendly floor material 100 '.

The white layer 130 is a layer of white color, and the print layer 120 or the chip inlay layer, which is stacked on the print layer 120 or the chip inlay layer, The adhesion between the dimension-stabilizing layer 140 and the layer-stacking layer 140 can be improved, thereby realizing excellent durability.

Wherein the dimension stabilizing layer (140) further comprises glass fiber, and the mass per unit area of the glass fiber contained in the dimension stabilizing layer (140) is about 30 g / mm ² To about 150 g / mm < ² >. By having a mass per unit area within the above range, it is possible to realize excellent dimensional stability by reducing dimensional strain even under high temperature and high humidity conditions, and maintain high adhesion with other layers stacked on the upper and lower layers to realize excellent durability. That is, the dimension stabilizing layer 140 may have a structure in which the binder resin is impregnated with glass fiber, and may include at least one selected from the group consisting of acrylic resin, melamine resin, poly (lactic acid) resin, But is not limited to, a fiber impregnated structure.

The base layer 150 supports the upper transparent layer 110, the printed layer 120, and a layer of a laid layer, which are the most basic layers of the environmentally friendly flooring material 100 ' can do.

The balance layer 160 is a part to be adhered to the floor surface during construction, and protects the back surface opposite to the surface of the environmentally-friendly floor material 100 ', and protects the floor from moisture.

At least one of the white layer 130, the chip layer of the chip, the base layer 150 and the balance layer 160 may be formed of TiO ₂ , CaCO ₃ , wood powder, Mica, glass fiber, Starch, natural fiber, rice hull, rosin, talc, and combinations thereof.

The eco-friendly flooring material 100 'may be produced by, for example, extrusion molding, car-rendering, blow molding or the like to produce the respective layers in the form of films or sheets, and then using them in a lamination process known in the art But it is not limited thereto.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of the right.

Hereinafter, examples and comparative examples of the present invention will be described. The following embodiments are only examples of the present invention, and the present invention is not limited to the following embodiments.

( Example )

Example 1 (a transparent layer: containing a crystalline polyphasic acid resin as a binder resin)

(Preparation of transparent layer)

65% by weight of crystalline polylactic acid resin (Nature Works, 4032D) having a weight ratio of L-lactic acid to D-lactic acid of 1: 0.015 and a weight average molecular weight of 200,000 g / mol, 20% by weight of benzoate plasticizer, And 0.1% by weight of stearic acid as a higher fatty acid were kneaded at 160 DEG C by a Banbury mixer and then subjected to primary and secondary mixing using a two-roll mill at 160 DEG C, and then the prepared raw materials were mixed at a temperature of 170 DEG C Car rendering processing was performed to prepare a transparent layer as a film having a thickness of 0.5 mm.

(Print layer and white layer preparation)

100 parts by weight of a polylactic acid resin (Nature Works, 4032D), 12 parts by weight of a benzoate plasticizer, 10 parts by weight of an acrylic copolymer, 1 part by weight of stearic acid, 50 parts by weight of calcium carbonate and 20 parts by weight of titanium dioxide A white layer was prepared as a white sheet having a thickness of 0.2 mm, and a printing layer was formed by applying a pattern to the surface of the white layer through a gravure printing or transfer printing method Respectively.

(Base layer preparation)

100 parts by weight of a polylactic acid resin (Nature Works, 4032D), 15 parts by weight of a benzoate plasticizer, 10 parts by weight of an acrylic copolymer, 2 parts by weight of stearic acid and 500 parts by weight of calcium carbonate, Car render processing under the same conditions as in the above-mentioned process to prepare a base layer as a sheet having a thickness of 2 mm.

(Balance layer preparation)

100 parts by weight of a polylactic acid resin (Nature Works, 4032D), 15 parts by weight of a benzoate plasticizer, 10 parts by weight of an acrylic copolymer, 1 part by weight of stearic acid and 150 parts by weight of calcium carbonate, And a balance layer was prepared as a sheet having a thickness of 1.2 mm.

The prepared transparent layer, the white layer in which the print layer was laminated, the base layer and the balance layer were laminated by a structure of a transparent layer / a print layer / a white layer / a base layer / a balance layer, and then heat and pressure were applied by using a press device, A non-adhesive environmentally friendly flooring was prepared by applying the connecting structure of EP No. 0843763 of Unilin Co., Ltd. using a Teonor facility.

Example 2 (transparent layer: including both crystalline polyphasic acid resin and amorphous polyphasic resin)

55% by weight of crystalline polylactic acid resin (Nature Works, 4032D) having a weight ratio of L-lactic acid to D-lactic acid of 1: 0.015 and a weight average molecular weight of 200,000 g / mol and an amorphous polylactic acid resin having a weight average molecular weight of 180,000 g / 10% by weight of a benzoate-based plasticizer, 10% by weight of an acrylic copolymer, and 0.1% by weight of stearic acid as a higher fatty acid were kneaded at 160 DEG C by a Banbury mixer, The prepared raw material was car-rendered at a temperature of 170 DEG C to prepare a transparent layer as a film having a thickness of 0.5 mm, and then printed in the same manner and under the same conditions as in Example 1 A white layer, a base layer, and a balance layer in which layers were stacked were prepared.

The prepared transparent layer, the white layer in which the print layer was laminated, the base layer and the balance layer were laminated by a structure of a transparent layer / a print layer / a white layer / a base layer / a balance layer, and then heat and pressure were applied by using a press device, A non-adhesive environmentally friendly flooring material was prepared by applying the connecting structure of EP No. 1704291 of Vallinge using a Teonor facility.

Example 3 (the transparent layer: the content ratio of the crystalline polyphasic acid resin and the amorphous polyphasic acid resin is different from that of Example 2)

35% by weight of a crystalline polylactic acid resin (Nateure Works, 4032D) having a weight ratio of L-lactic acid to D-lactic acid of 1: 0.015 and a weight average molecular weight of 200,000 g / mol and a weight average molecular weight of 180,000 g / (Nateure Works, 6302D), 15% by weight of a benzoate plasticizer, 10% by weight of an acrylic copolymer and 0.1% by weight of stearic acid as a higher fatty acid were kneaded at 160 DEG C by a Banbury mixer, Except that the prepared raw material was subjected to car rendering processing at a temperature of 170 DEG C and a transparent layer was prepared as a film having a thickness of 0.5 mm and the same conditions as in Example 1 and A non-adhesive environmentally friendly flooring having a laminated structure of a transparent layer / a print layer / a white layer / a base layer / a balance layer was prepared.

Example 4 (the transparent layer: the content ratio of the crystalline polyphasic acid resin and the amorphous polyphasic acid resin is different from that of Examples 2 and 3)

6 wt% of a crystalline polylactic acid resin (Nateure Works, 4032D) having a weight ratio of L-lactic acid to D-lactic acid of 1: 0.015 and a weight average molecular weight of 200,000 g / mol and an amorphous poly (Nateure Works, 6302D), 20% by weight of a benzoate plasticizer, 15% by weight of an acrylic copolymer and 1% by weight of stearic acid as a higher fatty acid were kneaded at 160 DEG C by a Banbury mixer, Except that the prepared raw material was subjected to car rendering processing at a temperature of 170 DEG C and a transparent layer was prepared as a film having a thickness of 0.5 mm and the same conditions as in Example 1 and A non-adhesive environmentally friendly flooring having a laminated structure of a transparent layer / a print layer / a white layer / a base layer / a balance layer was prepared.

Comparative Example 1 (when the crystallization rate of the crystalline polyphasic acid resin is different from that of Example 1)

65% by weight of crystalline polylactic acid resin (Nature Works, 2500HP) having a weight ratio of L-lactic acid to D-lactic acid of 1: 0.009 and a weight average molecular weight of 200,000 g / mol, 20% by weight of benzoate- And 0.1% by weight of stearic acid as a higher fatty acid were kneaded at 180 캜 with a Banbury mixer, followed by primary and secondary mixing using two rolls at 180 캜, and then the prepared raw materials were mixed at a temperature of 200 캜 Green non-sticking construction having a laminated structure of a transparent layer / a print layer / a white layer / a base layer / a balance layer by the same conditions and methods as in Example 1 except that a transparent layer was prepared as a film having a thickness of 0.5 mm. Type flooring.

Comparative Example 2 (when the weight ratio of the crystalline polyphasic resin to the amorphous polyphasic resin is different)

2% by weight of a crystalline polylactic acid resin (Nature Works, 4032D) having a weight ratio of L-lactic acid to D-lactic acid of 1: 0.015 and a weight average molecular weight of 200,000 g / mol and an amorphous polylactic acid resin having a weight average molecular weight of 180,000 g / The mixture was kneaded at 180 DEG C with a Banbury mixer at 58 DEG C by using a Banbury mixer, and the kneaded product was kneaded at 180 DEG C The same conditions and methods as in Example 1 were used except that the prepared raw materials were subjected to car-rendering at a temperature of 200 캜 to prepare a transparent layer as a film having a thickness of 0.5 mm, followed by primary and secondary mixing using a two- , An environmentally friendly non-adhesive type flooring having a laminated structure of a transparent layer / a print layer / a white layer / a base layer / a balance layer was prepared.

Comparative Example 3 (transparent layer: including only amorphous polyunsaturated water as binder resin)

A composition containing 65 wt% of an amorphous polylactic acid resin (Hisun, PLA 101L) having a weight average molecular weight of 190,000 g / mol, 20 wt% of a benzoate plasticizer, 15 wt% of an acrylic copolymer, and 0.1 wt% of stearic acid as a higher fatty acid Kneaded at 140 ° C using a Banbury mixer and then subjected to primary and secondary mixing using a two-roll mill at 140 ° C. Then, the prepared raw material was car-reworked at a temperature of 150 ° C to form a transparent layer An eco-friendly non-adhesive construction flooring having a laminated structure of a transparent layer / a print layer / a white layer / a base layer / a balance layer was produced under the same conditions and the same manner as in Example 1.

Comparative Example 4 (when the weight average molecular weight of the crystalline poly (lactic acid) resin was large)

65% by weight of a crystalline polylactic acid resin (Purac, custom made) having a weight ratio of L-lactic acid to D-lactic acid of 1: 0.015 and a weight average molecular weight of 260,000 g / mol, 20% by weight of a benzoate plasticizer, And 0.1% by weight of stearic acid as a higher fatty acid were kneaded at 200 ° C by a Banbury mixer and then subjected to primary and secondary mixing using two rolls at 200 ° C. Then, the prepared raw materials were mixed at 210 ° C Green non-sticking construction having a laminated structure of a transparent layer / a print layer / a white layer / a base layer / a balance layer by the same conditions and methods as in Example 1 except that a transparent layer was prepared as a film having a thickness of 0.5 mm. Type flooring.

Comparative Example 5 (when the weight average molecular weight of the crystalline poly (lactic acid) resin was small)

65% by weight of a crystalline polylactic acid resin (Hisun, PLA 210L) having a weight ratio of L-lactic acid to D-lactic acid of 1: 0.13 and a weight average molecular weight of 130,000 g / mol, 20% by weight of a benzoate plasticizer, And 0.1% by weight of stearic acid as a higher fatty acid were kneaded at 160 DEG C by a Banbury mixer and then subjected to primary and secondary mixing using a two-roll mill at 160 DEG C, and then the prepared raw materials were mixed at a temperature of 170 DEG C Green non-sticking construction having a laminated structure of a transparent layer / a print layer / a white layer / a base layer / a balance layer by the same conditions and methods as in Example 1 except that a transparent layer was prepared as a film having a thickness of 0.5 mm. Type flooring.

( Experimental Example )

The viscoelasticity and the melt index of each of the transparent layers of Examples 1-3 and Comparative Examples 1-5 were measured and the rate of change of viscosity of the composition used for forming each of the transparent layers was measured and described in Table 1 below. The crystallization rate of the crystalline polyphasic acid resin contained in the composition is measured and the weight average molecular weight and the number average molecular weight of each of the crystalline polyphasic acid resin and the amorphous polyphasic acid resin contained in the composition are measured and then the molecular weight distribution is calculated, Are shown in Table 2 below.

Experimental Example  One: Viscoelastic

Measurement method: The films as the respective transparent layers were prepared as a sample having a width of 5.3 mm and a length of 18 mm, and a film having a thickness of -70 ° C to 150 ° C was prepared using DMA (TA company, DMA Q800) Lt; / RTI > A frequency of 1 Hz, a temperature raising rate of 3 占 폚 / min, and an amplitude gamma of 15 占 퐉, and an air atmosphere.

Experimental Example  2: Resilience

Measuring method: The upper surface of each of the environmentally friendly non-adhesive type flooring material was kept at 80 캜 for 15 hours under a load of 60 kg / m ² , and then the load was removed and left for 1 hour, Were visually observed and their restorative power was measured.

The case where the upper surface of the environmentally friendly floor material is restored and returned to the flat floor state is indicated by " ", the case where the pressing phenomenon has hardly occurred is indicated by "DELTA & ".

Experimental Example  3: Viscosity change rate

Measurement method: Measured using a rheometer (manufactured by Anton Paar).

Specifically, each composition was placed in the rheometer set at 80 DEG C, and the gap between the plate and the plate was adjusted. Then, the temperature was elevated at a rate of 5 DEG C / min to measure a viscosity Vi at 160 DEG C, The viscosity change rate Vf was measured at 160 ° C for 10 minutes after the temperature reached 160 ° C, and then the viscosity change rate was calculated according to the above-described formula 2 in one embodiment.

Experimental Example  4: Non-isothermal  Crystallization rate and crystallization rate constant

Measurement method: Measured using a Differential Scanning Calorimeter (DSC) (TA Corporation, Discovery).

Specifically, the temperature was raised from room temperature to 250 ° C at a heating rate of 10 ° C / min, maintained at 250 ° C for 5 minutes, and then cooled to 0 ° C at a cooling rate of 2.5 ° C / min. When the crystallization degree finally reached is 1, the time taken to reach the point of time when the crystallinity is 0.5 is defined as the crystallization rate index. The crystallization rate constant k was calculated by substituting the above non-isothermal crystallization rate index into the Abraham equation according to the above-mentioned equation (1).

Experimental Example  5: Weight average molecular weight ( Mw ), Number average  Molecular Weight( Mn ) And molecular weight distribution

Each polylactic acid resin was dissolved in Chloroform at a concentration of 0.25% by weight and subjected to gel permeation chromatography (manufactured by Agilent, 1200, Column: PLgel 10 μm Mixed-B * 2 ea, PLgel 10 μm Guard * 1 ea, Detector: RID). Flow rate: 1.0 mL / min, solvent: chloroform, standard: polystyrene.

Then, the molecular weight distribution (Mw / Mn) was calculated by dividing the weight average molecular weight (Mw) by the number average molecular weight (Mn).

Experimental Example  6: Melt index ( melt index )

Measuring method: Measured using a weight of 2.16 kg at a temperature of 190 캜 according to the conditions of ASTM D1238, and the above measurement was repeated ten times, and averaged value thereof was evaluated as a melt index.

Dynamic viscoelasticity (tan?) Viscosity change rate (%) Melt Index (g / 10 min) dynamic stability Example 1 0.1 to 0.3
3 3 ○ Example 2 0.1 to 0.4 4 3 ○ Example 3 0.2 to 0.6 8 4
○ Example 4 0.35 to 1.0 20 6
△ Comparative Example 1 0.01 to 0.2 0 0
X Comparative Example 2 0.4 to 1.1 22 7
X Comparative Example 3 0.4 to 1.5 25 7 X Comparative Example 4 0.05 to 0.25 0 0 X Comparative Example 5 0.3-1.1 25 15 X

Crystallization rate index (t _1/2)
(minute) The crystallization rate constant (K) Molecular weight distribution
(c-PLA, a-PLA) Weight average molecular weight
(g / mol) Number average molecular weight
(g / mol) Example 1 20 2 1.9 c-PLA: 20 million c-PLA: 100,000 Example 2 20 2 c-PLA: 1.9, a-PLA: 1.85 c-PLA: 20 million
a-PLA: 20 million c-PLA: 100,000
a-PLA: 11 million Example 3 20 2 c-PLA: 1.9, a-PLA: 1.85 c-PLA: 20 million
a-PLA: 20 million c-PLA: 100,000
a-PLA: 11 million Example 4 20 2 c-PLA: 1.9, a-PLA: 1.85 c-PLA: 20 million
a-PLA: 20 million c-PLA: 100,000
a-PLA: 11 million Comparative Example 1 9 3.12 2.0 c-PLA: 20 million c-PLA: 11 million Comparative Example 2 9 3.12 c-PLA: 2.0, a-PLA: 2.0 c-PLA: 20 million
a-PLA: 19 million c-PLA: 11 million
a-PLA: 9 million Comparative Example 3 Not measurable Not measurable 2.0 a-PLA: 19 million a-PLA: 9 million Comparative Example 4 8 3.5 2.2 c-PLA: 26 million c-PLA: 150,000 Comparative Example 5 1.005 × 10 ³ 2.72 1.75 c-PLA: 13 million c-PLA: 8 million

The eco-friendly non-adhesive type flooring material according to Example 1-4 is suitable for all of the non-isotropic crystallization rate index, the crystallization rate constant, the melt index, the rate of change in viscosity, and the degree of change in viscoelasticity, Processability; And physical properties such as workability, structural balance, restitution force, and the like can be realized at an excellent level at the same time. Also, it can be clearly expected that the connection structure on the side of each environmentally friendly non-stick type floor material is easily formed into a desired shape and is firmly bonded without an adhesive, thereby realizing excellent environment friendliness.

On the other hand, the eco-friendly non-adhesive type flooring according to Comparative Examples 1 and 4 had a small non-isothermal crystallization rate index and a value of zero as the melt index and the viscosity change rate, so that blending did not occur at a processing temperature of about 160 ° C, The workability and workability are inferior and the physical properties such as workability, structural balance and restoring force are inferior. In addition, the eco-friendly non-adhesive type flooring material according to Comparative Example 2 had a low crystallization rate index, poor processability and workability, and a large amount of amorphous poly lactic acid resin, so that the degree of change in viscoelasticity, the rate of change in viscosity, The physical properties such as workability, structural balance and restoring force were also inferior. In addition, the eco-friendly non-adhesive type flooring material according to the comparative example 3 has a crystallization rate index, a degree of change of the viscoelasticity, a rate of change in viscosity, and a melt index of about 160 ° C Processability such as moldability and Banbury mold release easily melted at processing temperature; And physical properties such as workability, structural balance, and restoring force were all inferior. In addition, in Comparative Example 5, the crystallization rate index, the degree of change in the viscoelasticity, the rate of change in viscosity, and the melt index were remarkably large, resulting in poor processability and inferior physical properties such as workability, structural balance and restoring force.

As described above, it can be clearly expected that the flooring according to Comparative Example 1-5 is inferior in workability and the side connection structure can not be formed in a desired shape and can not be firmly coupled, thereby causing lifting and panning of the flooring.

100, 100 ': 300: Environmentally friendly flooring
110: transparent layer 120: print layer 130: white layer 140: dimensional stability layer
150: base layer 160: balance layer 170: surface treatment layer
301: first fitting projection
302: first insertion groove
301 ': second fitting protrusion
302 ': a second insertion groove

Claims (19)

A flooring comprising a transparent layer formed by extrusion molding, car rendering or blow molding a composition comprising a crystalline polyphasic resin,
The non-isothermal crystallization rate index of the crystalline polylactic acid resin _{(t 1/2) (non} -isothermal crystallization half-life) of 10 minutes to 10 ³ minutes, and the amount of the crystalline polylactic acid resin is 5% to 65% by weight ,
A first fitting protrusion and a first insertion protrusion are formed on two side surfaces of the side surface of the bottom material, a second fitting protrusion corresponding to the first insertion protrusion and a second fitting protrusion corresponding to the second fitting protrusion, Formed with an insertion groove
Eco - friendly non - stick construction flooring. The method according to claim 1,
Wherein the first and second insertion protrusions are formed on two side surfaces of the side surface of the bottom material,
Eco - friendly non - stick construction flooring. The method according to claim 1,
The first and second insertion protrusions and the first insertion protrusion are engaged with each other so that the first insertion protrusion and the first insertion protrusion are engaged with each other
Eco - friendly non - stick construction flooring. The method according to claim 1,
At least one fine protrusion or at least one fine groove is formed in both the first and second fitting protrusions,
At least one micro-groove or at least one micro-projection corresponding to the micro-projection or the micro-groove is formed in both the first insertion groove and the second insertion groove
Eco - friendly non - stick construction flooring. The method according to claim 1,
Wherein the crystallization rate constant calculated according to the Abrami spinning formula of the crystalline polyphosphoric acid resin is 0.001 to 3.12
Eco - friendly non - stick construction flooring. The method according to claim 1,
The composition has a viscosity change rate of 2% to 20% according to the following equation 1
Eco-friendly non-adhesive construction flooring:
[Equation 1]
Viscosity change rate (? V,%) = (Vf-Vi) / Vix100
In the above formula, Vi is the viscosity at the time when the temperature is elevated from the predetermined temperature and reached 160 ° C, and Vf is the viscosity at the time when the temperature is maintained at 160 ° C for 10 minutes from the point when the temperature reaches 160 ° C. The method according to claim 1,
Wherein the transparent layer has a tan? Of 0.1 to 1.0 as measured at a temperature of 80 to 140 占 폚
Eco - friendly non - stick construction flooring. The method according to claim 1,
Wherein the weight ratio of L-lactic acid to D-lactic acid in the total polymerizable compounds constituting the crystalline polyphasic acid resin is from 1: 0.01 to 1: 0.12
Eco - friendly non - stick construction flooring. The method according to claim 1,
Wherein the content of D-lactic acid in the total polymerizable compound constituting the crystalline polyphasic acid resin is 1 wt% to 10 wt%
Eco - friendly non - stick construction flooring. The method according to claim 1,
Wherein the composition does not comprise or further comprises an amorphous poly
Eco - friendly non - stick construction flooring. The method according to claim 1,
When the composition further comprises an amorphous polyphasic acid resin, the weight ratio of the crystalline polyphasic acid resin to the amorphous polyphasic acid resin is less than 1: 19 to less than 100: greater than 0
Eco - friendly non - stick construction flooring. The method according to claim 1,
Wherein the crystalline polyphasic acid resin has a molecular weight distribution of 1.7 to 2.2,
When the composition further comprises an amorphous poly lactic acid resin, the amorphous poly lactic acid resin has a molecular weight distribution of 1.5 to 2.1
Eco - friendly non - stick construction flooring. The method according to claim 1,
Wherein the crystalline polyphasic acid resin has a weight average molecular weight of 160,000 g / mol to 250,000 g / mol,
When the composition further comprises an amorphous poly lactic acid resin, the amorphous poly lactic acid resin has a weight average molecular weight of 160,000 g / mol to 250,000 g / mol
Eco - friendly non - stick construction flooring. The method according to claim 1,
The transparent layer has a melt index according to the conditions of ASTM D1238 of 2 g / 10 min to 8 g / 10 min
Eco - friendly non - stick construction flooring. The method according to claim 1,
Wherein the composition further comprises at least one selected from the group consisting of a plasticizer, a melt strength enhancer, a lubricant, and other additives
Eco - friendly non - stick construction flooring. 16. The method of claim 15,
When the content of the plasticizer is 20% by weight or less
Eco - friendly non - stick construction flooring. The method according to claim 1,
Further comprising on the lower surface of the transparent layer at least one selected from the group consisting of a printing layer, a radial layer as a chip, a white layer, a dimensional stability layer, a base layer, a balance layer,
Eco - friendly non - stick construction flooring. 18. The method of claim 17,
A transparent layer / a print layer or a chip; a laid layer / a white layer / a base layer; Or a transparent layer / a print layer or a chip; a laid layer / a white layer / a dimensionally stable layer / a base layer; Or a transparent layer / a print layer or a chip; a laid layer / a white layer / a base layer / a balance layer; Or a layered structure including a structure of a transparent layer / a print layer or a chip-like laid layer / a white layer / a dimensionally stable layer / a base layer /
Eco - friendly non - stick construction flooring. 18. The method of claim 17,
Wherein at least one of the print layer, the raid layer as the chip, the white layer, the dimensional stability layer, the base layer and the balance layer includes the crystalline polyphasic acid resin, the amorphous polyphasic acid resin,
Eco - friendly non - stick construction flooring.

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