JPH11100470A - Olefin-based copolymer composition and decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition capable of exhibiting effects such as no emission of a harmful gas in incineration, no damage to an incinerator in refuse disposal by incineration, prevention of an environmental pollution, etc., by using both a specific olefin-based copolymer and an inorganic mixture. SOLUTION: This composition is obtained by mixing (A) 100 pts.wt. of an olefin-based copolymer having a molecular structure preferably of the formula (R is an alkyl having the number of carbons made by subtracting 2 from the number of carbons constituting an α-olefin; (n) and (m) are each a repeating number of an integer), 0.85-0.91 g/cm<3> density and 0.5-20 g/10 minutes melt index with (B) 10-300 pts.wt. of an inorganic mixture (preferably calcium carbonate, aluminum hydroxide, titanium dioxide, etc.). The composition is processed by a calender processing, etc., to form a resin layer, which is laminated to one side of one substrate of paper, woven fabric, knitted fabric or nonwoven fabric and integrated to give a decorative sheet improved in flexibility and excellent in handle and design.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative sheet, especially a wallpaper, in which a synthetic resin composition and a resin layer formed by calendering or extruding the composition are laminated on a substrate.
The present invention relates to products used for ceilings, other building materials, furniture, and the like.

[0002]

2. Description of the Related Art Conventionally, as a material of this kind of synthetic resin composition or decorative sheet, a vinyl chloride resin is generally used because of its excellent workability and design. Further, a patent application using a thermoplastic elastomer (hereinafter, referred to as TPO) as another material has been filed (Japanese Patent Laid-Open No. 6-1).
6832, JP-A-8-3380).

[0003]

However, those using a vinyl chloride resin generate harmful gases such as hydrogen chloride at the time of combustion, and corrode the incinerator during incineration and disposal, or emit gas during a fire. It has been pointed out that poisoning may occur. Therefore, as a substitute for the vinyl chloride resin, TPO described in the above-mentioned patent application is partially used. However, TPO is mainly produced by blending an olefin-based synthetic rubber and a polyolefin resin. When a large amount of an inorganic compound is added, the melt viscosity increases, and it becomes difficult to carry out calendering and extrusion with existing equipment. On the other hand, in the case of a composition mainly composed of TPO to which an inorganic compound is not added so much, the temperature dependence of the melt viscosity is high and the processing temperature range is narrow, so that it is difficult to control the temperature, and the product sheet is dense and uniform foamed. There is a problem that cells are not formed and the feel is rubber-like and lacks flexibility.

[0004] The present invention solves the above problems,
No harmful gas such as hydrogen chloride is generated at the time of incineration or fire. Therefore, there is no risk of polluting the environment. It is an object of the present invention to provide a decorative sheet having uniform foam cells, rich in flexibility, and excellent in texture and design.

[0005]

According to the present invention, there is provided a composition comprising at least an olefin copolymer and an inorganic compound, wherein the olefin copolymer has a density of 0.1%. 85 to 0.91 (g / cm
³ ) The melt index (hereinafter referred to as MFR) is 0.
5 to 20 (g / 10 minutes), wherein the inorganic compound is 10 to 300 parts by weight based on 100 parts by weight of the ethylene-based copolymer. I do.

Further, in order to solve the above-mentioned problems, the present invention relates to an olefin copolymer composition characterized in that the olefin copolymer is a copolymer of ethylene and an α-olefin. Is preferred.

Further, in order to solve the above-mentioned problems, the olefin-based copolymer is characterized in that the molecular structure is represented by the following formula: Is preferred.

In the formula, R is an alkyl group having the number of carbon atoms obtained by subtracting 2 from the number of carbon atoms constituting the α-olefin;
n and m are the number of repetitions consisting of integers, and the range of n and m is not particularly limited within the above range of the density of the resin to the MFR.

[0008] In order to solve the above-mentioned problems, the present invention provides an olefin-based composition, wherein the inorganic compound is at least one selected from calcium carbonate, aluminum hydroxide, magnesium hydroxide and titanium dioxide. It is preferable to use a copolymer composition.

In order to solve the above-mentioned problems, the present invention provides a method for forming a resin layer by calendering, extruding or the like on the olefin-based copolymer composition to form a paper, woven cloth, knitted cloth or nonwoven cloth. A decorative sheet laminated and integrated on one surface of any one type of base material.

In order to solve the above-mentioned problems, it is preferable that the present invention provides a decorative sheet characterized in that a skin layer is formed on the surface of the resin layer.

The olefin copolymer used in the present invention includes, for example, α-olefins such as ethylene and propylene and butene, vinyl aromatics such as styrene, cyclic olefins, diolefins, dienes, non-conjugated dienes, and polar monomers. And the like. In particular, among these copolymers, the α-olefin is a copolymer of ethylene with at least one selected from propylene, butene-1, hexene-1, octene-1, and higher α-olefins, Polymerized using a metallocene catalyst, the comonomer content was 20%
The density is lower than the copolymer of the same component by the conventional Ziegler-Natta type catalyst, the melt strength is high despite the narrow molecular weight distribution, and the inorganic compound is highly filled. It is suitable for the present invention because of its excellent workability.

Here, the metallocene catalyst is a polymerization catalyst having a structure in which a metal atom is sandwiched between two 5-membered cyclopentadienyls, and is usually used together with a co-catalyst such as methylaluminoxane (MAO). Used. Examples of the olefin copolymer using such a metallocene catalyst,
There are Engage manufactured by Dupont Dow Elastomer, Tuffmer H manufactured by Mitsui Petrochemical Industries, and others. In addition, a plurality of types of resins can be blended and used depending on the hardness, workability, state of foam cells, and the like of the decorative sheet. A blend of an olefin-based copolymer with a metallocene catalyst and a copolymer without using a metallocene catalyst, and a blend of an ethylene-based copolymer with an olefin-based copolymer other than ethylene-based or an olefin-based homopolymer. Can be used as well.

The olefin copolymer has a density of 0.8.
5 to 0.91 (g / cm ³ ), preferably 0.86 to 0.88 (g / cm ³ ), and an MFR of 0.5 to 20
(G / 10 min), preferably in the range of 1 to 7 (g / 10 min). Density and MFR
The reason for limiting the range to such a range is that if the density is higher than the range, the sheet lacks flexibility and the texture is impaired, and conversely, if the density is lower than the range, the versatility is poor and it is not suitable for industrial production. It is. When the MFR is smaller than the above range, the melt viscosity becomes higher, and it becomes difficult to process with the current equipment and conditions. Conversely, when the MFR is larger than the above range, it becomes difficult to form a sheet. The MFR here is AST
According to the definition of MD1238, density and MF
The range of R is also applied to a case where a plurality of types of resins having different densities and / or MFRs are used by blending. In this case, the density and MFR of the blended resin may be within the above ranges.

The inorganic compound used in the present invention is mainly added for imparting flame retardancy, improving workability, increasing the amount or coloring, etc. For this purpose, it is dispersed uniformly in the composition. Any material having compatibility can be used. In particular, aluminum hydroxide, magnesium hydroxide, and titanium dioxide are suitable for the above purpose. Another purpose of imparting flame retardancy is a borate such as zinc borate. As the inorganic extender, talc, clay, silica and the like are appropriately used in addition to the calcium carbonate.

In addition to the above-mentioned compounds, various compounds can be added for the purpose of improving workability and various physical properties of products. For example, as the foaming agent, there is a thermal decomposition type foaming agent such as azodicarbonamide (ADCA), which can be appropriately selected according to the purpose, and is used by adding 2 to 10 parts by weight to 100 parts by weight of the resin. Further, a foaming accelerator such as zinc stearate may be used in combination. As processability improvers, lubricating agents such as metal fatty acid salts such as zinc stearate, magnesium stearate and potassium stearate, fatty acid amides and polyethylene wax for the purpose of improving the thermal stability and imparting lubricity during calendering and extrusion. To copolymer 1
0.5 to 5.0 parts by weight, preferably 0.5 to 2.0 parts by weight, can be added to 00 parts by weight. Also,
As the colorant, various inorganic and organic pigments, and flame retardants other than chlorine-based flame retardants, for example, phosphate-based flame retardants and the like can also be used. Further, if necessary, an appropriate amount of an ultraviolet absorber, an antistatic agent, an antioxidant, an antifungal agent and the like may be added.

As a typical method of manufacturing a decorative sheet, there are calendering and extrusion, and the decorative sheet according to the present invention can be processed by any method. Next, typical production methods of calendering and extrusion will be described. First, in the case of calendering, a predetermined composition (MFR of resin is 2 to 7) manufactured by stirring and mixing in advance.
(Preferably, a composition of (g / 10 minutes)) is charged into a Banbury or an intermix, melted and kneaded, rolled to a predetermined thickness by a calender to form a sheet, and laminated on a base material such as a backing paper or a cloth. I do.

The working temperature of the calender is 100 to 160 ° C., preferably 110 to 140 ° C. In addition, if necessary, print printing by gravure printing or the like, heat the resin layer to which the foaming agent is added to the decomposition temperature of the foaming agent or more to foam, and then form a squeezed pattern on the surface by embossing May be. Further, the surface of the resin layer may be subjected to a surface treatment such as a corona treatment or a primer treatment or a matting treatment. The backing paper of the substrate can be appropriately selected from those used for vinyl wallpaper. Usually, for example, inorganic paper in which aluminum hydroxide, glass fiber, or the like is mixed in pulp, flame-retardant paper in which various flame retardants are mixed in pulp, or general paper that is not subjected to such special treatment is used.

Next, in the case of extrusion processing, among the above-mentioned compositions, various inorganic compounds, foaming agents, flame retardants, and other compounds are made into high-concentration pellets using polyethylene as a medium, and the resulting pellets are mixed with an olefin-based pellet. Polymer (MFR8 to 20 (g / 1
(Preferably 0 minutes)) and a tumbler or the like at a predetermined ratio, and then a sheet is formed by an extruder and laminated and integrated with a backing paper or the like. Processing methods such as lamination with a backing paper, print printing, foaming, embossing, and surface treatment are the same as those in the above-described calendering. In addition, the reason for passing through the pellet preparation step is to completely disperse the compound in the resin, and when the dispersibility is good such as an olefin copolymer polymerized using a metallocene catalyst, The step of preparing pellets may be omitted, and the compound may be directly kneaded and extruded.

The skin layer used in the present invention is mainly used for protecting the decorative sheet from scratches and dirt, and for enhancing the design. Usually, a transparent olefin-based film, acrylic-based film, polyester-based film, fluorine-based film, or the like is laminated by heat-sealing or an adhesive. Although the thickness of the film varies depending on the use of the decorative sheet, it is 0.010 to 0.050 mm, preferably 0.01 to 0.050 mm.
It is 5 mm to 0.030 mm. If necessary, inorganic or organic matting agents such as silica, coloring agents, fungicides,
A film to which an antimicrobial agent, an ultraviolet absorber or the like is added may be used. As a stain preventing agent, there is a crystalline film (hereinafter referred to as a modified olefin-based film) obtained by saponifying and modifying an ethylene-vinyl acetate copolymer, for example, an EVAL film (manufactured by Kuraray).

[0020]

EXAMPLES Examples of the present invention will be described, and the results of comparative experiments with comparative examples will be described below. Examples 1 and 2 are examples of an olefin-based copolymer composition, and Examples 3 and 5 are examples of a decorative sheet. Comparative Examples 1 and 2 are comparative examples of a decorative sheet using TPO, and Comparative Example 3 is a comparative example of a decorative sheet using a vinyl chloride resin.

Formulation 1 100 parts by weight of olefin copolymer (Tuffa-H manufactured by Mitsui Petrochemical Industries, Ltd.) (density: 0.87 (g / cm ³ ), MFR: 3.6 (g / 10 minutes)) 50 parts by weight of calcium 30 parts by weight of aluminum hydroxide 15 parts by weight of titanium dioxide 6 parts by weight of foaming agent (ADCA) 1 part by weight of zinc stearate

Formulation 2 70 parts by weight of olefin-based copolymer (Engage manufactured by Dupont Dow Elastomer Co.) (density: 0.88 (g / cm ³ ), MFR: 18 (g / 10 minutes)) NUC polyethylene (Nihon Unicar Co., Ltd.) 30 parts by weight (density: 0.93 (g / cm ³ ), MFR: 11 (g / 10 minutes)) (density of the blend resin of the olefin copolymer and NUC polyethylene: 0.90 (g / cm ³ )) cm ³ ), MFR: 15 (g / 10 minutes)) 50 parts by weight of calcium carbonate 30 parts by weight of aluminum hydroxide 15 parts by weight of titanium dioxide 1 part by weight of zinc stearate

Formulation 3 TPO (calender molding application type) 100 parts by weight (MFR: 50 (g / 10 min)) 70 parts by weight of calcium carbonate 15 parts by weight of titanium dioxide 4 parts by weight of foaming agent (ADCA) 1 part by weight of zinc stearate

Formulation 4 TPO (extrusion molding type) 70 parts by weight (MFR: 50 (g / 10 min)) Polyethylene 30 parts by weight (density 0.93 (g / cm ³ ), MFR: 11 (g / 10 min) )) 70 parts by weight of calcium carbonate 15 parts by weight of titanium dioxide 1 part by weight of zinc stearate

Formulation 5 Vinyl chloride resin (degree of polymerization 800) 100 parts by weight Plasticizer (DOP) 60 parts by weight Calcium carbonate 100 parts by weight Zinc borate 10 parts by weight Titanium dioxide 15 parts by weight Blowing agent (ADCA) 4 parts by weight Stabilizer (Barium zinc stearate) 3 parts by weight

Example 1 A predetermined amount of each of the formulations described in Formulation 1 was charged into a blender or a Henschel mixer, and stirred and mixed at room temperature for 3 minutes to obtain a predetermined composition.

Example 2 50 parts by weight of the olefin copolymer and the other components in the blend of the blend according to the blend 2 were stirred and mixed at room temperature for 3 minutes with a blender or a Henschel mixer.
Extrude into a string with an extruder set at 0 ° C., cool and cut with a pelletizer to form predetermined pellets, and stir with the remaining olefin copolymer in the same blend to obtain a predetermined composition. Was.

Example 3 As shown in FIG. 1, the composition of Example 1 was kneaded with a plast mill at 40 rpm for 5 minutes at 120 ° C.
Rolling is performed at a roll temperature of 20 ° C. to form a sheet having a thickness of about 0.2 mm. Next, the sheet is laminated on a base material 12 of flame-retardant paper to form a resin layer 11. A surface treatment agent for matting is printed on the surface by gravure printing to form a printed layer 15, which is then placed in an oven at 220 ° C. for 120 hours.
After heating and foaming for 2 seconds, the sheet was passed between squeezing rolls having a predetermined shape, and then cooled to form a squeezed pattern 14 on the surface, thereby obtaining a decorative sheet 1 having an expansion ratio of about 3 times.

Example 4 As shown in FIG. 2, the composition of Example 2 was put into a hopper of an extruder and extruded from a T-die at a set temperature of 160 ° C. to form a 0.30 mm thick sheet. Next, this sheet was laminated on a base material 12 of an inorganic paper to form a resin layer 11, and a printing layer 15 having a matting treatment agent formed on the surface by gravure printing in the same manner as in Example 3 was used. Thus, a non-foaming decorative sheet 1 was obtained.

Example 5 As shown in FIG. 3, in Example 1, the base material 12 of the flame-retardant paper was used.
Immediately after foaming by heating at 220 ° C. for 120 seconds in an oven after laminating the sheet to form the resin layer 11,
A modified olefin-based film having a thickness of 0.015 mm to which an inorganic matting agent has been added is laminated to form a skin layer 13, and at the same time, a squeezed pattern 14 is formed on the surface by passing between squeezing rolls having a predetermined shape. An expandable decorative sheet 1 was obtained.

Comparative Example 1 A composition was prepared from the composition according to Formulation 3 in the same manner as in Example 1, and this composition was prepared using the same apparatus as in Example 3.
A foamable decorative sheet was obtained under the same conditions and procedures as in Example 3 except that the processing conditions were a plastmill kneading temperature of 170 ° C and a roll rolling temperature of 150 ° C.

COMPARATIVE EXAMPLE 2 Among the formulations according to Formulation 4, 40 parts by weight of TPO and another formulation in the same formulation were pelletized in the same manner as in Example 2,
A predetermined composition was prepared by stirring with the remaining TPO in the same formulation, and then this composition was extruded with a T-die in the same manner as in Example 4 to obtain a non-foamable decorative sheet.

Comparative Example 3 The composition of Formulation 5 was stirred and mixed at 80 ° C. for 3 minutes to prepare a composition, and the composition was rolled at 130 ° C. for 5 minutes under kneading conditions of a plast mill. 150 ° C
A foaming decorative sheet was obtained by using the same apparatus as in Example 3 except that rolling was performed according to the same procedure.

Results of Comparative Experiment Comparative Example 1 and the decorative sheet prepared in Examples 3 to 5 described above.
Comparative experiments were performed on the decorative sheets prepared in Nos. 1 to 3 for their texture and appearance, state of foam cells, and workability.

Regarding the feel and appearance, the decorative sheets of Examples 3 to 5 are rich in flexibility and have almost the same texture as the decorative sheet made of vinyl chloride resin, while Comparative Example 1
In the case of the decorative sheets using TPO and No. 2, dense foam cells were not formed, and the texture was rubber-like. In particular, the foamed products of Example 3 and Example 5 were compared with other foamed products,
The compressive strain recovery speed was high, and the recovery of the dent of the finger mark after pressing the surface with the finger was the fastest.

As for the state of the foam cells, the cross sections of the decorative sheets of Examples 3 and 5 and Comparative Examples 1 and 3 were compared. As a result, the state of the foam cells was dense and uniform in all the examples. While the decorative sheet made of vinyl chloride resin of Example 3 was almost the same as the sheet of Comparative Example 1 made of TPO, the foamed cells were large and non-uniform overall, the walls separating the cells were thick, and the cell formation was poor. It was incomplete.

As for the processability, when the roll characteristics of Example 3 according to the present invention, Comparative Example 1 of TPO and Comparative Example 5 using a vinyl chloride resin are compared, the gelation of Example 3 and Comparative Example 3 is rapid. The grouping on the roll was good. In Comparative Example 1, gelation was slow. Example 3 had the best dispersibility (the speed at which the blend was mixed and became uniform), followed by Comparative Example 3 and Comparative Example 1. Next, Comparative Example 2 has the largest temperature dependency, and it is difficult to control the temperature during extrusion. On the other hand, Example 4 has a wide processing temperature range and is easy to control the temperature. Is Comparative Example 3
It was able to be processed under almost the same conditions.

[0038]

According to the first aspect of the present invention, harmful gases such as hydrogen chloride are generated at the time of incineration by using the above-mentioned olefin-based copolymer and an inorganic compound as the material of the composition. In addition, the calorie during combustion is small, does not damage the incinerator, is safe even in the event of fire, and has the effect of preventing environmental pollution.

According to the second aspect of the present invention, there is provided the first aspect.
In addition to the effects described above, the use of the olefin-based copolymer has a low density and a low melt viscosity and a good dispersibility, so that it has excellent processing characteristics and an effect of improving productivity.

According to the third aspect of the invention, in addition to the effects of the first and second aspects, since the resin composition does not contain a double bond, it has excellent weather resistance and thermal stability, and has an effect of enhancing durability. To play.

In the invention according to claim 4, claim 1 is
In addition to the effects of (1) to (3), by adding the inorganic compound as described above, the product is provided with flame retardancy, the processing temperature range is widened, the cost is reduced, and the product appearance is improved by coloring. And has the effect of increasing added value.

In the invention according to claim 5, claim 1 is
In addition to the effects of the above items 4, the decorative sheet using the composition can be manufactured by a general-purpose device such as a calendering process or an extrusion process, and the cost required for new equipment can be reduced. In addition, the resulting product sufficiently satisfies standards such as flame retardancy, is rich in flexibility, has good printability, and exhibits excellent design properties. Furthermore, the foam cells are uniform, the texture is good, the surface is smooth, the dents of finger marks after pressing the surface with a finger are quickly recovered and returned, and the effect of maintaining a good appearance is exhibited. In addition, it is lighter than vinyl chloride resin products, and is easier to handle during transportation and construction.

In the invention according to claim 6, claim 1 is
In addition to the effects of 5 to 5, a skin layer is provided on the surface,
Protecting the sheet surface has the effect of preventing damage and improving durability.

[Brief description of the drawings]

FIG. 1 is a partially enlarged sectional view of a decorative sheet according to the present invention.

FIG. 2 is a partially enlarged sectional view of a decorative sheet according to the present invention.

FIG. 3 is a partially enlarged sectional view of a decorative sheet according to the present invention.

[Explanation of symbols]

1: decorative sheet, 11: resin layer, 12: base material, 13: skin layer, 14: drawn pattern, 15: printed layer

[Procedure amendment]

[Submission date] December 24, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

Examples of the olefin copolymer used in the present invention include ethylene and propylene, α-olefins such as butene, vinyl aromatics such as styrene, cyclic olefins, diolefins, dienes, non-conjugated dienes, and polar monomers. And the like. In particular, among these copolymers, the α-olefin is a copolymer of ethylene with at least one selected from propylene, butene-1, hexene-1, octene-1, and higher α-olefins, Polymerized using a metallocene catalyst, the comonomer content was 20%
It has a lower density and a higher melt tension despite its narrow molecular weight distribution compared to conventional copolymers of the same component with a conventional Ziegler-Natta type catalyst. It is suitable for the present invention because of its excellent workability.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

The olefin-based copolymer has a density of 0.1.
85 to 0.91 (g / cm ³ ), preferably 0.86
0.88 (g / cm ³ ), MFR 0.5 to 20
(G / 10 min), preferably in the range of 1 to 7 (g / 10 min). Density and MFR
The reason for limiting to this range is that if the density is higher than the range, the sheet lacks flexibility and the texture is impaired. It is. If the MFR is smaller than the above range, the melt tension becomes too high, and it becomes difficult to process with existing equipment and conditions. Conversely, if the MFR is larger than the above range, it becomes difficult to form a sheet. In this specification,
MFR is ASTM D1238 unless otherwise specified.
(Temperature 190 ° C, load 2160g, time 10 minutes)
It is according to the fixed. Further, the range of density and MFR are
The present invention is also applied to a case where a plurality of types of resins having different densities and / or MFRs are blended and used. In this case, shake
Even if the single resin before blending is out of the range,
It is sufficient that the density and MFR of the resin after loading fall within the above ranges.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

Formulation 3 TPO (calender molding application type) 100 parts by weight (MFR: 50 (g / 10 minutes) temperature 230 ° C., load 10 kg ) Calcium carbonate 70 parts by weight Titanium dioxide 15 parts by weight TOP 15 parts by weight Blowing agent ( ADCA) 4 parts by weight Zinc stearate 1 part by weight

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

Formulation 4 TPO (extrusion molding type) 70 parts by weight (MFR: 50 (g / 10 minutes) temperature 230 ° C., load 10 kg ) Polyethylene 30 parts by weight (density 0.93 (g / cm ³ ), MFR : 11 (g / 10 min)) 70 parts by weight of calcium carbonate 15 parts by weight of titanium dioxide 15 parts by weight of TOP 1 part by weight of zinc stearate

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

Regarding the texture and appearance, the decorative sheets of Examples 3 to 5 are rich in flexibility and have almost the same texture as the decorative sheet made of vinyl chloride resin, whereas the decorative sheet of Comparative Example 1 using the TPO is used. In the case, dense foam cells were not formed, and the texture was rubber-like. In particular, the foamed products of Example 3 and Example 5 had a higher compression strain recovery speed than the other foamed products, and had the fastest recovery and recovery of the dents of finger marks after pressing the surface with a finger.

Claims (6)

[Claims] 1. A composition comprising at least an olefin copolymer and an inorganic compound, wherein the olefin copolymer has a density of 0.85 to 0.91 (g / c).
m ³ ) and a melt index of 0.5 to 20 (g / 1)
0 minutes), wherein the amount of the inorganic compound is from 10 to 300 parts by weight based on 100 parts by weight of the olefin-based copolymer. 2. The olefin copolymer composition according to claim 1, wherein the olefin copolymer is a copolymer of ethylene and an α-olefin. 3. The olefin copolymer composition according to claim 1, wherein said olefin copolymer has a general molecular structure represented by the following formula. Embedded image In the formula, R is 2 from the number of carbon atoms constituting the α-olefin.
Is an alkyl group having the number of carbon atoms, and n and m are repeating numbers each consisting of an integer. 4. The olefin copolymer composition according to claim 1, wherein said inorganic compound is at least one selected from calcium carbonate, aluminum hydroxide, magnesium hydroxide and titanium dioxide. 5. A resin layer is formed by processing the olefin-based copolymer composition according to claim 1 by calendering, extrusion, or the like, and forms any one of paper, woven fabric, knitted fabric, and nonwoven fabric. A decorative sheet laminated and integrated on one side of the substrate. 6. The decorative sheet according to claim 5, wherein a skin layer is formed on a surface of said resin layer.