JP2000296585A - Decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative sheet generating no harmful gas at a time of combustion and excellent in bending processability, abrasion resistance and damage receiving resistance at a time of Vcut processing or lapping processing. SOLUTION: As the substrate layer of a decorative sheet, an olefinic resin substrate sheet constituted of a propylene type block copolymer consisting of a propylene/α-olefin random copolymer component (A) and a propylene/α- olefin random copolymer component (B) of which the α-olefin content is different from that of the random copolymer component (A) is used and an ink layer is laminated on the single surface or both surfaces thereof and a thermoplastic polyester resin layer is further laminated on the ink layer to obtain a decorative sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative sheet which is adhered to a plywood or a steel plate and is used as a surface material of building materials, electric appliances and furniture. More specifically, the present invention relates to a decorative sheet which is excellent in bending workability such as lapping and V-cut processing, and in a product after processing, has excellent surface wear resistance and scratch resistance.

[0002]

2. Description of the Related Art Conventionally, a decorative sheet which is attached to a plywood or a steel plate and used as a decorative material is mainly made of a vinyl chloride resin because of its superior secondary workability such as lapping and V-cut. Has been widely used. However, materials that can replace vinyl chloride resin have been demanded due to increasing environmental problems in recent years.

In such a background, Japanese Patent Application Laid-Open No. 8-23001
As disclosed in Japanese Patent Application Laid-Open Publication No. 13-132, and Japanese Patent Application Laid-Open No. 8-267682, a method has been proposed in which, for example, a propylene-α-olefin random copolymer is used as a substitute for a vinyl chloride resin.

[0004] The propylene-α-olefin random copolymer and the like have problems in that there is no specific description of the polymerization composition or that the bent portion is whitened during lapping or V-cutting. Furthermore, in the structure of the decorative sheet described in JP-A-8-267682 described above, since the printing layer is on the outermost layer, there is also a problem that the ink is peeled off due to friction or the like, or the surface is scratched. Was left.

[0005]

SUMMARY OF THE INVENTION The present invention is excellent in bending workability during lapping and V-cutting, and
It is an object of the present invention to provide an environment-friendly cosmetic sheet which is excellent in abrasion resistance and damage resistance and does not generate harmful gas even during combustion.

[0006]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, as a base layer of a decorative sheet, two kinds of propylene-α-olefin random copolymer components were used. A propylene-based block copolymer (X) comprising (A) and (B), wherein the propylene-α-
Intrinsic viscosity of olefin random copolymer component (B), propylene-α-olefin random copolymer component (A)
And the intrinsic viscosity ratio of (B), and the product of the intrinsic viscosity ratio and the weight ratio of the propylene-α-olefin random copolymer components (A) and (B) are within a certain range. A cosmetic sheet in which an olefin-based resin base sheet composed of the united product (X) is used, an ink layer is laminated on one or both surfaces thereof, and a thermoplastic polyester resin layer is further laminated on the surface of the ink layer has been proposed. We found a solution and completed the present invention.

The present invention has the following configuration. (1) A decorative sheet in which an ink layer is laminated on one or both surfaces of an olefin-based resin substrate sheet, and a thermoplastic polyester resin layer is further laminated on the surface of the ink layer, wherein the olefin-based resin substrate sheet is Is a propylene-α-olefin random copolymer component (A) having a propylene content of 90% by weight or more and a propylene content of 5%.
A propylene-based block copolymer (X) comprising 5-90% by weight of a propylene-α-olefin random copolymer component (B), wherein the propylene-α-olefin random copolymer component (B) Intrinsic viscosity [η] _B
In There 1.3~3.5dl / g, wherein [eta] The intrinsic viscosity [eta] The intrinsic viscosity ratio of _A to _B and propylene -α- olefin copolymer component _{(A) [η] B /} [η] _A is 0.5 ~
1.3, and the content of each W _A of the propylene block copolymer (X) of propylene -α- olefin random copolymer component in the (A) and (B), when the W _B (W _A / W _B ) × ([η] _B /) of the weight ratio W _A / W _B and the intrinsic viscosity ratio [η] _B / [η] _A
A cosmetic sheet characterized by using a propylene-based block copolymer (X) having [η] _A ) in the range of 1.0 to 4.5. (2) The propylene-based block copolymer (X) comprises 5 parts of the propylene-α-olefin random copolymer component (A).
The cosmetic sheet according to the above (1), comprising 0 to 90% by weight and 10 to 50% by weight of the propylene-α-olefin random copolymer component (B). (3) The α-olefin constituting the propylene-α-olefin random copolymer component (A) is ethylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1
The cosmetic sheet according to the above item (1) or (2), which is one or more selected from -decene, 4-methyl-1-pentene and 3-methyl-1-pentene. (4) The α-olefin polymerization unit constituting the propylene-α-olefin random copolymer component (B) is ethylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 4-methyl The cosmetic sheet according to any one of the above (1) to (3), which is one or more kinds selected from -1-pentene and 3-methyl-1-pentene. (5) The thickness of the thermoplastic polyester resin layer is 0.01 m
m. (6) The above (1) to (1), wherein the thickness of the base sheet made of an olefin resin is 0.02 to 0.5 mm, and the wetting index of one or both surfaces of the base sheet is 36 mN / m or more. 5) The cosmetic sheet according to any one of the above items.

[0008]

Embodiments of the present invention will be described below. The cosmetic sheet of the present invention has three or more layers in which an ink layer is laminated on one or both surfaces of an olefin-based resin substrate sheet which is a substrate layer, and a thermoplastic polyester resin layer is further laminated on the surface of the ink layer. A decorative sheet having a structure, preferably a decorative sheet having five or more layers in which a primer layer is provided on both sides of the base sheet or between the base sheet and the ink layer and between the ink layer and the thermoplastic polyester resin layer. Sheet.

The olefin-based resin base sheet is an opaque sheet provided with a hiding property by a color pigment or an ink layer.

The outermost thermoplastic polyester resin layer has a total light transmittance of 80% or more when measured alone according to JIS K 7105 "Testing method for optical properties of plastics" measuring method A. Is preferred. The above-mentioned thermoplastic polyester resin layer can be optionally embossed with a wood grain pattern or the like by a known method and wiping, if necessary.

In the present invention, the olefin resin constituting the olefin resin base material sheet comprises a propylene-α-olefin random copolymer component (A) having a propylene content of 90% by weight or more and a propylene content of 55 to 55% by weight. 9
A propylene-based block copolymer (X) comprising 0% by weight of a propylene-α-olefin random copolymer component (B).

The propylene-α-olefin random copolymer component (A) has a propylene content of 90% by weight.
Or more, preferably 92% by weight or more, more preferably 94% by weight.
It is a random copolymer of at least% by weight. If the polypropylene content is 90% by weight or more, the heat resistance is high, and it can be suitably used as a cosmetic sheet.

The α-olefin used in the production of the propylene-α-olefin random copolymer component (A) includes ethylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, -Methyl-1-
Penten, 3-methyl-1-pentene and the like can be mentioned, and among them, ethylene is preferred from the viewpoint of production cost.

On the other hand, the propylene-α-olefin random copolymer component (B) has a propylene content of 55 to 90.
% By weight, preferably 55 to 85% by weight of the random copolymer. If the propylene content is in the range of 55 to 90% by weight, the impact resistance at low temperatures is sufficient.

The α-olefin used in the production of the propylene-α-olefin random copolymer component (B) includes ethylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, -Methyl-1-
Penten, 3-methyl-1-pentene and the like can be mentioned, and among them, ethylene is preferred from the viewpoint of production cost.

The propylene-α-olefin random copolymer component (B) has an intrinsic viscosity [η] _B measured in tetralin at 135 ° C. of 1.3 to 3.5 dl / g.
And the intrinsic viscosity ratio [η] _B / [η] _A between the intrinsic viscosity [η] _A and the intrinsic viscosity [η] _A of the propylene-α-olefin random copolymer component (A) measured under the same conditions is 0. 5
To 1.3, preferably 0.6 to 1.2.

The intrinsic viscosity [η] _B of the propylene-α-olefin random copolymer component (B) affects the productivity of the decorative sheet, and the propylene-α-olefin random copolymer component (A), ( B) intrinsic viscosity ratio [η] _B /
[Η] _A affects the dispersibility of the propylene-α-olefin random copolymer component (B) in the propylene-α-olefin random copolymer component (A). Propylene-
The intrinsic viscosity of the α- olefin random copolymer component _(B) [η] B is small enough to increase the productivity of the olefin resin substrate sheet, the limit of propylene -α- olefin random copolymer component (A) When the viscosity ratio [η] _B / [η] _A is within the above range, sufficient impact resistance at low temperatures can be obtained.

The propylene block copolymer used in the present invention and (X) is the amount of propylene -α- olefin random copolymer component (A) W _A and propylene -α- olefin random copolymer component (B ) the weight ratio W _a / W _B with the generation amount W _B of the intrinsic viscosity ratio of both said copolymer component and the [η] _B / [η] product of _{a (W a / W B)} × ( [Η] _B
/ [Η] _A ) is a propylene-based block copolymer having a range of 1.0 to 4.5.

The product of the weight ratio of the two copolymer components and the limiting viscosity ratio is an index representing the whitening resistance of the decorative sheet (meaning that the folded portion when the sheet is folded is hard to whiten). When the value is within the above range, the whitening resistance is excellent, and whitening does not occur in the bent portion at the time of lapping or V-cut of the decorative sheet.

The specific composition of the propylene-based block copolymer (X) of the present invention is such that the propylene-α-olefin random copolymer component (B) is 10% based on the weight of the composition.
５０50% by weight. When the composition of the propylene-based block copolymer (X) is within this range, a cosmetic sheet having excellent heat resistance, impact resistance, and whitening resistance, and excellent bending properties such as lapping and V-cut can be obtained. .

The propylene-based block copolymer (X) of the present invention may contain, if necessary, known antioxidants, neutralizing agents, antistatic agents, weathering agents, dispersants, and the like used in conventional polyolefins. Various additives such as an anti-blocking agent, a slip agent, a synthetic rubber, a synthetic resin, an inorganic filler (such as talc, calcium carbonate, magnesium hydroxide, silica, and mica), and a coloring agent can be added.

The olefin resin substrate sheet of the present invention can be produced by using the above-mentioned propylene block copolymer (X) by various known and publicly-known molding methods, such as an extrusion molding method, a calendar molding method, and a compression molding method. And a method of manufacturing by a cast molding method.

The extrusion molding method and the calender molding method are preferred because of the good productivity among the known and used molding methods. Specifically, an extruder, a T-die, a cooling roll, a guide roll, a take-up roll, a trimming cutter, a fixed-size cutting cutter, a T-die sheet forming apparatus equipped with a winder and the like, a Banbury mixer, a mixing roll, a warming roll, It is more preferable to manufacture with a calender forming apparatus including an extruder, a calender roll, a take-off roll, a cooling roll, a trimming cutter, a masking, a fixed-size cutting cutter, a winding machine and the like.

The olefin resin substrate sheet of the present invention has a wetting index on one side or both sides of 36 mN / m or more,
Preferably 38 mN / m or more, more preferably 40 mN / m
The surface treatment is performed so as to be N / m or more. Examples of the surface treatment method include known corona treatment and flame plasma treatment. Among them, corona treatment is preferable from the viewpoint of stability of treatment degree and safety at the time of treatment. When the wetting index is 36 mN / m or more, the adhesive force between the olefin-based resin base sheet and the ink layer is increased, and the printing characteristics are improved.

The thickness of the olefin resin substrate sheet of the present invention is 0.02 to 0.5 mm, preferably 0.04 to 0.5 mm.
3 mm, particularly preferably 0.06 to 0.2 mm.

The ink layer of the present invention is formed by printing by a known and publicly used printing method. Specific printing methods include gravure printing, offset printing, screen printing, and the like. Examples of the ink used for forming the ink layer include an ink using a urethane-based resin, a chlorinated polyolefin or the like as a vehicle, but an ink containing no halogen element such as chlorine is preferable from an environmental point of view.

The ink layer according to the present invention is not limited to a single layer, and may be used to form a pattern with an improved design such as woodgrain or marble.
It may be a stack of several layers.

It is preferable to provide a primer layer between the olefin-based resin base sheet and the ink layer of the present invention because the adhesion between the olefin-based resin base sheet and the ink layer is improved. Further, it is more preferable to provide a primer layer on the outermost surface of the surface to be adhered to a base material as a decorative material such as plywood or a steel plate since the adhesiveness when the decorative sheet and the base material are bonded is improved. The primer layer is formed by applying a primer to the surface of the olefin-based resin base material sheet using a gravure coater, a roll coater, or the like. As the primer to be used, those known as known olefin primers, specifically, primers such as polyurethane-based, polyester-based, and chlorinated polyolefin-based primers can be used, and primers that do not contain elements such as chlorine from the environmental viewpoint are used. Is preferred.

The thermoplastic polyester resin layer of the present invention is a transparent or translucent layer,
It is laminated on the ink layer by a known technique such as an extrusion lamination method by melt extrusion coating.

The thermoplastic polyester resin used in the present invention is a copolymer obtained as an ester from an aromatic dicarboxylic acid such as terephthalic acid and isophthalic acid and an aliphatic diol such as ethylene glycol and butanediol. Specific examples include polyethylene terephthalate and polybutylene terephthalate.

If the thickness of the thermoplastic polyester resin layer of the present invention is 0.01 mm or more, preferably 0.02 mm or more, the surface of the decorative sheet may be cracked or cracked during folding such as lapping or V-cut. Does not occur. From the viewpoint of economy, the thickness of the thermoplastic polyester resin layer is preferably set to 0.10 mm or less.

If necessary, known antistatic agents, weathering agents, antiblocking agents, slip agents and the like can be added to the thermoplastic polyester resin layer of the present invention.

It is preferable to provide a primer layer of polyurethane, polyester, acrylic resin or the like between the ink layer of the present invention and the thermoplastic polyester resin layer in order to improve the adhesion between the ink layer and the thermoplastic polyester resin layer. Is preferred.

Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. The measuring methods used in the examples and comparative examples are as follows.

(1) Intrinsic viscosity (unit: dl / g): Using tetralin (tetrachloronaphthalene) as a solvent,
Under a temperature condition of 135 ° C., an automatic viscosity measurement device (AVS2
Using a mold (manufactured by Mitsui Toatsu Co., Ltd.), the intrinsic viscosity [η] _{A of} the propylene-α-olefin random copolymer component (A) extracted from the polymerization process, and then the propylene block copolymer component The intrinsic viscosity [η] _WHOLE of (X) was directly measured. The intrinsic viscosity [η] _B of the propylene-α-olefin random copolymer component (B) was calculated from the following equation using the values of [η] _A and [η] _WHOLE . [Η] _B = ([η] _WHOLE / W _B ) − ([η] _A × W _A /
W _B) W _A: the amount of propylene -α- olefin random copolymer component (A) W _B: the amount of propylene -α- olefin random copolymer component (B)

(2) Propylene content (unit weight%): Measured by an infrared absorption spectrum method using a 1760X FT-IR apparatus manufactured by Perkin Elmer.

(3) Weight of random copolymer components (A) and (B): Magnesium, which is a catalyst residue in each copolymer obtained during the polymerization process, is analyzed by inductively coupled plasma emission spectroscopy ( The weight of the random copolymer components (A) and (B) was calculated from the polymer yield per unit amount of the catalyst.

(4) Secondary workability: thickness 3 mm, width 100
A decorative sheet was stuck on a plywood having a thickness of 5 mm, and a V-cut product was evaluated as ○ when there was no whitening or cracking in a portion bent at a right angle, and x when whitening or cracking was observed.

(5) Scratch resistance: JIS K 5400
According to the Pencil Scratch Resistance Test Method described in “General Paint Test Method”, using a STH-100 type scratch tester manufactured by Kasai Corporation, using a pencil having a concentration symbol of H, load 1 kg.
When no scratch was observed when the sheet surface was scratched by 10 mm, the evaluation was ○, and when the scratch was observed, the evaluation was ×.

(6) Method for Producing Propylene Block Copolymer (X) The propylene block copolymer (X) used in each of the Examples and Comparative Examples was obtained by the following production method.

In a first polymerization step, 0.5 g of a titanium-containing solid catalyst component having an average particle diameter of 115 μm, which had been preactivated, was placed in a horizontal polymerization vessel (L / D = 6, inner volume: 100 liters) having stirring blades. / Hr, an organic silane compound such as triethylaluminum and diisopropyldimethoxysilane is continuously supplied at an Al / Si molar ratio of 6, and propylene and ethylene are maintained while maintaining the polymerization temperature and pressure described in Table 1 below. And a hydrogen gas for adjusting the molecular weight is continuously supplied at a ratio shown in Table 1 to obtain a predetermined propylene-α-olefin random copolymer component (A). Next, the propylene-α-olefin random copolymer component (A) and the propylene-α-olefin random copolymer were used in a second polymerization step using a polymerization vessel having the same size as that used in the first polymerization step having stirring blades. A predetermined amount of each of a mixed gas of propylene and ethylene, hydrogen gas, and oxygen gas as a polymerization activity inhibitor was continuously supplied to produce the polymer component (B), and the copolymerization reaction was conducted under the conditions shown in Table 1. Was carried out to obtain a predetermined propylene-based block copolymer (X).

Examples of the titanium-containing solid catalyst component include a titanium compound supported on an inorganic carrier such as a magnesium compound, a silica compound, and alumina, and an organic carrier such as polystyrene. Any known product such as a product obtained by reacting an electron-donating compound such as an ether such as methyl-2-isobutyl-1,3-dimethoxypropane or an ester such as di-n-butyl phthalate or diisobutyl phthalate can be used. . For example, spraying a magnesium compound-alcohol solution, partially drying the solid component, and then treating the partially dried solid component with an electron donating compound such as titanium halide and di-n-butyl phthalate. Containing solid catalyst component (Japanese Unexamined Patent Publication No.
No. 03), and a titanium-containing solid catalyst component obtained by treating a simple substance of magnesium with a titanium halide and an electron donating compound (Japanese Patent Application Laid-Open No. 4-103604).

In the preactivation treatment of the titanium-containing solid catalyst component, the amount of the organoaluminum compound used is not particularly limited, but is usually 0.1 to 1 mol of titanium atom in the titanium-containing solid catalyst component. 1 to 40 mol,
It is preferably used in the range of 0.2 to 20 mol, and an α-olefin such as ethylene, propylene, 1-butene, 1-
0.1 to 100 g, preferably 0.5 to 50 g, of one or more α-olefins such as pentene and 1-hexene per 10 g of the titanium-containing solid catalyst component at 10 to 80 ° C. for 10 minutes to 48 hours. Is reacted.

The organic silane compound used as necessary in the preactivation treatment may be the same as or different from the organic silane compound used in the main polymerization described above. In addition to the organic silane compound, diisobutyldimethoxysilane, di-t-
Butyldimethoxysilane, cyclohexylmethyldimethoxysilane, diphenyldimethoxysilane, and the like can be used. In the preactivation treatment, the organic silane compound may be used in advance in an amount of 0.01 to 10 mol, preferably 0.05 to 5 mol, per 1 mol of the organic aluminum compound.

As the organoaluminum used in the above preactivation treatment, triethylaluminum is preferable.

Example 1 The olefin-based block copolymer (X) constituting the olefin-based resin base sheet was composed of two propylene-ethylene copolymer components (A) and (B). component (a), an intrinsic viscosity [eta] of _{(B) a, [η]} B is and either a 2.1 dl / g, a weight ratio W _a / W _B 4.0, the copolymer component (B A) propylene-ethylene block copolymer having a content of 20% by weight was obtained by gas phase polymerization. To 100 parts by weight of the obtained block copolymer, 0.1 part by weight of a phosphorus-based heat stabilizer and 0.1 part by weight of calcium stearate were added and pelletized, and then 10 m by a T-die-air knife type film forming apparatus. / Min at a rate of 0.1% constituting the olefin-based resin base material layer of the present invention.
A 5 mm sheet was produced. A polyurethane formed by subjecting one surface of the olefin-based resin sheet to a corona discharge treatment so as to have a wetting index of 40 mN / m, and then adding a tolylene diisocyanate as a curing agent to the polyester polyol using a gravure coater on the surface. A polyurethane-based ink (trade name: Lamister, manufactured by Toyo Ink Co., Ltd.) was further applied as an ink layer as an ink layer so that the coating amount after drying was 2.5 g / m ² . Further, after the above-mentioned polyurethane-based primer was applied again, the outermost layer was formed as a thermoplastic polyester resin layer in an amount of 0.0
A polyethylene terephthalate film having a thickness of 2 mm was laminated by a dry lamination method to obtain a decorative sheet having a five-layer structure. The secondary workability and damage resistance were evaluated using the obtained cosmetic sheet. The results are shown in Table 1 below.
Shown in The obtained decorative sheet was excellent in secondary workability, and had good scratch resistance on the sheet surface.

Example 2 The olefin-based block copolymer (X) constituting the olefin-based resin base sheet was composed of two propylene-ethylene copolymer components (A) and (B). The intrinsic viscosities [η] _A and [η] _{B of the} components (A) and (B) are all 1.8 dl / g, the weight ratio W _A / W _B is 2.5, and the copolymer component (B) 5) A decorative sheet having a five-layer structure was obtained in accordance with Example 1, except that a propylene-ethylene block copolymer having a content of 29% by weight was obtained by vapor phase polymerization. The obtained cosmetic sheet was evaluated for secondary workability and scratch resistance. The results are shown in Table 1 below. The obtained decorative sheet was excellent in secondary workability, and had good scratch resistance on the sheet surface.

Example 3 A decorative sheet having a five-layer structure was obtained in accordance with Example 1, except that an olefin resin base sheet having a thickness of 0.08 mm was used. The obtained cosmetic sheet was evaluated for secondary workability and scratch resistance. The results are shown in Table 1 below. The obtained cosmetic sheet is excellent in secondary workability,
The sheet surface had good scratch resistance.

Example 4 A decorative sheet having a five-layer structure was obtained according to Example 1, except that a 0.02 mm-thick polybutylene terephthalate film was laminated as a thermoplastic polyester resin layer.
The obtained cosmetic sheet was evaluated for secondary workability and scratch resistance. The results are shown in Table 1 below. The obtained decorative sheet was excellent in secondary workability, and had good scratch resistance on the sheet surface.

Comparative Example 1 On the surface of a base sheet similar to the olefin-based resin base sheet subjected to the corona discharge treatment described in Example 1, a polyurethane primer was applied under the same conditions as in Example 1 using a gravure coater. Further, a polyurethane-based ink was applied thereon to obtain a three-layered decorative sheet. The secondary workability and the damage resistance were evaluated using the obtained cosmetic sheet.
The results are shown in Table 1 below. Although the obtained cosmetic sheet was excellent in secondary workability, the sheet surface was inferior in scratch resistance and peeling of the ink layer was observed.

Comparative Example 2 The olefin-based block copolymer (X) constituting the olefin-based resin substrate sheet was composed of two types of propylene-ethylene copolymer components (A) and (B). component (a), an intrinsic viscosity _{[η] a, [η]} B , respectively 1.6 and 2.9 dl / g, and 3.8 weight ratio W _a / W _B, the copolymer (B) Component (B) content of 21
A cosmetic sheet having a five-layer structure was obtained in accordance with Example 1, except that a propylene-ethylene block copolymer in an amount of about 10% by weight was obtained by vapor phase polymerization. The secondary workability and the damage resistance were evaluated using the obtained cosmetic sheet. The results are shown in Table 1 below. Although the obtained cosmetic sheet had good scratch resistance on the sheet surface, whitening of the bent portion was observed in the secondary workability evaluation.

[0052]

The cosmetic sheet of the present invention does not generate harmful gas containing chlorine during combustion, and is an environmentally friendly sheet. In addition, the sheet is excellent in bending workability such as lapping processing and V-cut processing, and in a product after secondary processing, is hardly scratched on the surface and has excellent durability, and is a cosmetic sheet that can be suitably used as a cosmetic material.

[0053]

[Table 1]

Continued on the front page F-term (reference) 4F100 AK03A AK07 AK08A AK41D AK42 AK64A AK66A AK67A AL01A AL02A BA03 BA04 BA10A BA10C BA10D GB07 GB41 GB81 HB31B HB31C JA06A JA20A JB16D JK00 JL00 JL01 PG00

Claims (6)

[Claims] 1. A decorative sheet having an ink layer laminated on one or both surfaces of an olefin resin substrate sheet, and a thermoplastic polyester resin layer laminated on the surface of the ink layer. The material sheet has a propylene-α-olefin random copolymer component (A) having a propylene content of 90% by weight or more and a propylene-α-olefin random copolymer component (B) having a propylene content of 55 to 90% by weight. ), Wherein said propylene-α
-The intrinsic viscosity [η] _{B of the} olefin random copolymer component (B) is 1.3 to 3.5 dl / g, and the intrinsic viscosity of the [η] _B and the propylene-α-olefin copolymer component (A) Intrinsic viscosity ratio with [η] _A [η] _B / [η] _A is 0.5 to
1.3, and the content of each W _A of the propylene block copolymer (X) of propylene -α- olefin random copolymer component in the (A) and (B), when the W _B (W _A / W _B ) × (η) _B / of the weight ratio W _A / W _B and the intrinsic viscosity ratio [η] _B / [η] _A
A cosmetic sheet characterized by using a propylene-based block copolymer (X) having [η] _A ) in the range of 1.0 to 4.5. 2. A propylene-based block copolymer (X) comprising:
The cosmetic according to claim 1, wherein the propylene-α-olefin random copolymer component (A) is contained in a proportion of 50 to 90% by weight and the propylene-α-olefin random copolymer component (B) is contained in a proportion of 10 to 50% by weight. Sheet. 3. The α-olefin constituting the propylene-α-olefin random copolymer component (A) is ethylene,
1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 4-methyl-1-pentene and 3-
The cosmetic sheet according to claim 1, wherein the cosmetic sheet is at least one selected from methyl-1-pentene. 4. The α-olefin polymerization unit constituting the propylene-α-olefin random copolymer component (B) is composed of ethylene, 1-butene, 1-pentene, 1-hexene,
The cosmetic sheet according to any one of claims 1 to 3, wherein the cosmetic sheet is one or more selected from -octene, 1-decene, 4-methyl-1-pentene, and 3-methyl-1-pentene. 5. A thermoplastic polyester resin layer having a thickness of 0.1 mm.
The decorative sheet according to any one of claims 1 to 4, which is not less than 01 mm. 6. The base sheet made of an olefin resin has a thickness of 0.02 to 0.5 mm, and the wetting index of one or both surfaces of the base sheet is 36 mN / m or more. The cosmetic sheet according to any one of claims 5 to 10.