JP2001315280A - Foamed laminate sheet of polyolefin resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foamed laminate sheet of a polyolefin resin with various outstanding physical properties such as moldability and surface performance, used as a building member for a wall material and the like or as a surface material for a notice board and the like. SOLUTION: This foamed laminate sheet of a polyolefin resin comprises a foamed resin layer (A) which contains 100-700 pts.wt. ethylene/α-olefin copolymer with a density of 0.86-0.92 g/cm3, a melt flow rate of 0.5-40 g/10 min. and the ratio (Mw/Mn) of weight-average molecular weight (Mw) to number-average molecular weight (Mn) of 1.5-5 as a copolymer of an ethylene and a 3-12C α-olefin obtained by polymerization using a metallocene catalyst and 0-30 pts.wt. olefin elastomer and a nonwoven fabric layer (B) containing 30-70 wt.% cotton fiber and 70-30 wt.% chemical fiber laminated on one of the faces of the foamed resin layer (A).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyolefin resin foam laminated sheet suitable as an interior material of a building or a bulletin board surface material, and a bulletin board surface material using the foam laminated sheet.

[0002]

2. Description of the Related Art Conventionally, the interior material of a building and the surface material of a bulletin board for posting a bulletin board have excellent surface performance such as a pin hole that is not conspicuous when a pin is pierced, and are also flame retardant and durable. Therefore, a laminated sheet in which a base material such as paper is laminated on a foamed sheet made of a vinyl chloride resin is widely used because of its excellent price and low cost. However, when the laminated sheet is incinerated after use, measures such as the use of an acid-resistant incinerator are required, and there is a problem in that separation and treatment are troublesome and costly. Further, there is a problem that the plasticizer contained in the foamed sheet made of the vinyl chloride resin blows out and easily contaminates the surface of the laminated sheet and other articles in contact with the laminated sheet.

[0003] As substitutes for foamed sheets made of vinyl chloride resin, polyolefin resin and vinyl acetate resin are used.
There is a foam sheet made of ethylene-vinyl acetate resin. For example, as a foamed sheet made of a vinyl acetate resin, there has been proposed a foamed sheet formed by coating a base paper with an emulsion of a vinyl acetate resin containing a foaming agent to form a film, and then subjecting the film to heat foaming. However, the sheet has a problem that the sheet surface is easily stained due to poor water resistance of the sheet. In order to improve this, water-resistant resin is coated on the sheet surface, or a resin film is laminated on the sheet surface by lamination.
There was a problem that cost increased. In addition, as a foamed sheet made of ethylene-vinyl acetate resin or polyethylene resin, a pyrolytic foaming agent is added to these resins, the sheet is formed by an extruder or a roll forming machine, and then a heating device or a heating furnace is used. Some of them are obtained by foam molding. However, these sheets have insufficient foaming properties and have not been satisfactory in terms of performance including appearance and the like.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a polyolefin resin foam laminated sheet which is excellent in surface performance such as inconspicuous pin hole marks, cushioning property, moldability, construction adhesiveness and the like.

[0005]

The gist of the present invention resides in a foamed laminated sheet made of a polyolefin resin in which a layer (B) is laminated on one side of a layer (A). Layer (A): (1) obtained by polymerization using a metallocene catalyst,
(A) a copolymer of ethylene and an α-olefin having 3 to 12 carbon atoms, and (b) a density of 0.86 to 0.9.
2g / cm ³ , (c) melt flow rate is 0.5 to 4
0 g / 10 min, and (d) the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is 1.5 to 5
Ethylene-α-olefin copolymer 100 to 70
Part by weight, (2) a foamed resin layer containing 0 to 30 parts by weight of an olefin-based elastomer Layer (B): 30 to 70% by weight of cotton fiber and chemical fiber 70
Non-woven fabric containing up to 30% by weight

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The polyolefin resin used in the layer (A) of the present invention has a density of 0.8 obtained by polymerization using a metallocene catalyst.
6 to 0.92 g / cm ³ , melt flow rate of 0.5
-40 g / 10 min, more preferably 0.8-30 g / 1
0 minute, and weight average molecular weight (Mw) determined by gel permeation chromatography (GPC)
(Mw / Mn) is 1.5.
To 5, preferably 2 to 4 ethylene-α-olefin copolymers.

As the α-olefin to be copolymerized with ethylene, one having 3 to 12 carbon atoms is used. Such materials include, for example, propylene, 1-butene, 1-
Examples thereof include pentene, 1-hexene, 1-heptene, 1-octene, 4-methyl-1-pentene, and 1-decene, and one or a mixture of two or more thereof is used. The mixing ratio of α-olefin to ethylene is preferably 5 to 40% by weight.

A metallocene catalyst (also referred to as a single-site catalyst or a Kaminsky catalyst) is disclosed in
8, JP-A-7-118431, JP-A-7-118431
A catalyst comprising a metallocene-based transition metal complex and an organoaluminum compound as disclosed in, for example, JP-A-148895, and may be used while being supported by an inorganic substance.

As the metallocene transition metal complex, for example, a transition metal (titanium, zirconium, hafnium) selected from group 4B is added to a cyclopentadienyl group, a substituted cyclopentadienyl group, a dicyclopentadienyl group, a substituted dicyclo A pentadienyl group, an indenyl group, a substituted indenyl group, a tetrahydroindenyl group, a substituted tetrahydroindenyl group, a fluorenyl group or a substituted fluorenyl group, which are coordinated with one or two ligands; Those in which two groups are crosslinked by a covalent bond are coordinated, and those having ligands such as a hydrogen atom, an oxygen atom, a halogen atom, an alkyl group, an alkoxy group, an aryl group, and an acetylacetonate group. can give.

Further, as the organoaluminum compound,
Alkyl aluminum and chain or cyclic aluminoxane are mentioned, as alkyl aluminum, triethyl aluminum, triisobutyl aluminum, dimethyl aluminum chloride, diethyl aluminum chloride, methyl aluminum dichloride, ethyl aluminum dichloride, dimethyl aluminum fluoride, diisobutyl aluminum hydride, Examples thereof include diethylaluminum hydride and ethylaluminum sesquichloride.The chain or cyclic aluminoxane can be produced by bringing the above-mentioned alkylaluminum into contact with water. Water, or water of crystallization of complex salt or water adsorbed by organic or inorganic compounds It can be obtained by reacting aluminum.

Examples of a carrier for supporting the metallocene catalyst include silica gel, zeolite, and diatomaceous earth. The ethylene-α-olefin copolymer obtained by polymerization using a metallocene catalyst (hereinafter referred to as “metallocene-based ethylene-α-olefin copolymer”) is obtained by using a Ziegler catalyst, a solid catalyst, or the like. Flexibility, mechanical strength, etc. are superior to those obtained by polymerization.

The layer (A) contains a metallocene ethylene-α
-An olefin elastomer can be further blended with the olefin copolymer. As the olefin-based elastomer, ethylene-propylene copolymer, ethylene-propylene
Propylene-diene copolymer (ethylene-propylene-
Ethylene-propylenes such as ethylidene norbornene, ethylene-propylene-methylenenorbornene, ethylene-propylene-dicyclopentadiene, ethylene-propylene-1,4-hexadiene, ethylene-propylene-methyloctadiene, ethylene-propylene-vinylnorbornene, etc. Elastomers and ethylene-1-butene copolymers, ethylene-1-butene-diene copolymers (ethylene-1-butene-ethylidene norbornene, ethylene-1-butene-methylenenorbornene, ethylene-1-butene-dicyclopentadiene, Ethylene-1-
Ethylene or butane having 3 to 12 carbon atoms, such as butene-1,4-hexadiene, ethylene-1-butene-methyloctadiene, and ethylene-1-butene-vinylnorbornene.
Α-olefin copolymers and the like and mixtures thereof. Among them, an ethylene-propylene elastomer is particularly preferable.

The compounding amount of the olefin elastomer is expressed by weight ratio, metallocene ethylene-α-olefin copolymer / olefin elastomer = 100 to 70/0 to 3
0, preferably metallocene-based ethylene-α-olefin copolymer / olefin-based elastomer = 85 to 75/1
5 to 25. By blending the olefin-based elastomer, the foamability and tensile strength of the layer (A) are further improved. The compounding ratio of the olefin elastomer is 30/70
When the ratio exceeds 3, the surface of the layer (A) becomes uneven at the time of molding the layer (A), and the appearance is inferior.

The layer (A) is a foamed layer. In order to obtain the foamed layer, for example, a foaming agent is previously added to the resin composition, and as described later, when the layer (A) is formed, What is necessary is just to foam at the time of lamination of A) and layer (B), or after lamination. As the foaming agent, it is preferable to use a pyrolytic foaming agent.
Examples of the pyrolytic foaming agent include commonly used organic foaming agents and inorganic foaming agents. Examples of the organic foaming agent include azo compounds such as azodicarbonamide, azobisformamide, azobisisobutyronitrile, and diazoaminobenzene, N, N'-dinitrosopentamethylenetetramine, N, N'-dimethyl N, N Nitroso compounds such as' -dinitroterephthalamide, benzenesulfonylhydrazide, P-toluenesulfonylhydrazide, P,
Examples include sulfonyl hydrazide compounds such as P'-oxybisbenzenesulfonyl hydrazide. Examples of the inorganic foaming agent include sodium bicarbonate, ammonium carbonate, ammonium bicarbonate, and ammonium nitrite.

The compounding amount of the blowing agent is 0.5 to 10 parts by weight per 100 parts by weight of the total amount of the metallocene ethylene-α-olefin copolymer and the olefin elastomer. If the amount of the foaming agent is small, a sufficient expansion ratio cannot be obtained, and a sufficient cushioning property of the laminated sheet cannot be obtained. If the amount is too large, the moldability of the layer (A) is reduced or the layer (A) is colored.

The layer (A) of the present invention may contain cork powder for imparting a design property. The cork powder contains 0.5 parts by weight per 100 parts by weight of the total amount of the metallocene ethylene-α-olefin copolymer and the olefin elastomer.
It is advisable to mix 〜50 parts by weight. When the amount of cork powder is small, the effect of imparting design properties by adding cork powder is small. On the other hand, when the amount of the cork powder is large, the surface of the layer (A) becomes rough or the edge of the layer (A) tends to be cut off, so that the productivity deteriorates and the layer (A) Also tends to deteriorate. More preferred amount of cork powder is 3
１５15 parts by weight.

The cork powder has an average particle diameter of 200 to 3
000 μm, preferably 500-2000 μm. Cork powder having a small average particle size requires time and effort for pulverization, and tends to be powdered when mixed with a resin component or the like, and may contaminate the periphery. When the average particle diameter of the cork powder is large, the sheet is broken at the time of forming the layer (A), the heat generated by the frictional resistance of the cork powder increases, and the foaming and coloring accompanying the generation of gas due to the decomposition of the cork powder. And sheet forming becomes difficult.

The average particle size of the cork powder is such that the integrated value of the weight of each fraction measured by a JIS sieve is 50% of the total.
It is expressed as the particle diameter at the point where In addition, the average particle diameter of the cork powder is within the above specific range,
It is preferable that the cork powder has a particle diameter of 70% by weight or more, preferably 80% by weight or more based on the whole particle diameter.

The moisture contained in the cork powder is not particularly problematic as long as the cork powder does not significantly absorb moisture. For example, when the cork powder has a water content exceeding 10% by weight, foaming during molding becomes severe. Problems in molding are likely to occur. In such a case, for example, use after reducing the water content in advance with an oven or a hopper dryer, etc., or prior to mixing with the resin, stir while heating only the cork powder in the mixer to be used to perform the drying process. Then, a method of adding a resin may be used. The water content of the cork powder is preferably 3% by weight or less.

The cork powder used in the present invention is bark obtained from cork oak, and may be obtained by pulverizing this bark. The bark may include an inner skin and an outer skin in addition to the cork layer. Further, a cork sheet or a cork formed in a block shape may be crushed and recycled as cork particles. Further, it is preferable to add a flame retardant to the layer (A) of the present invention in order to impart flame retardancy. Examples of the flame retardant include commonly used organic and inorganic flame retardants. Examples of the organic flame retardant include polyphosphate and phosphorus ester flame retardants such as ammonium polyphosphate and the like, nitrogen-based, halogen-based, and bromine-based flame retardants. Examples include compounds, aluminum hydroxide, magnesium hydroxide, antimony trioxide, sodium antimonate, zirconium compounds, borax, zinc borate, molybdenum trioxide, and composite inorganic substances that are complexes of these compounds. Among them, non-halogen flame retardants which do not generate harmful halogen gases at the time of fire or incineration after use, particularly polyphosphate flame retardants, are preferred.

The flame retardant is preferably added in an amount of 1 to 50 parts by weight per 100 parts by weight of the total of the metallocene-based ethylene-α-olefin copolymer and the olefin-based elastomer. If the amount is small, sufficient flame retardancy cannot be obtained,
On the other hand, when the addition amount of the flame retardant is large, the moldability deteriorates and the physical properties of the layer (A) deteriorate. In the layer (A) of the present invention,
In addition to the above components, if necessary, other resins and inorganic fillers, a foam decomposition accelerator, a lubricant, a surfactant, an anti-blocking agent, a pigment, an antibacterial agent, etc. Good.

The layer (A) of the present invention is prepared, for example, by kneading a pellet of a metallocene-based ethylene-α-olefin copolymer, an olefin-based elastomer resin, a foaming agent, and if necessary, a cork powder and other additives with a Banbury mixer. Thereafter, it is obtained by forming into a sheet shape with a heating roll, a calender roll, or the like. Alternatively, using a twin-screw extrusion kneader equipped with a hot cut device,
The sheet may be formed into a pellet by an extruder equipped with a T-die. The molding temperature is preferably 150 to 200 ° C,
In particular, when cork powder is blended, the molding temperature is more preferably 160 to 180 ° C. in order to prevent coloring of the cork powder due to heat.

The thickness of the layer (A) thus formed is preferably in the range of 0.05 to 5 mm. If the thickness is small, the sheet is likely to break during molding. Particularly, when cork powder is added, a hole may be generated and the sheet may be broken, making molding impossible. On the other hand, when it is thick, the molding speed decreases, the productivity of the sheet decreases, and the workability at the time of secondary processing tends to deteriorate. More preferably, the thickness of the layer (A) is 0.1 to 1 mm.

The nonwoven fabric constituting the layer (B) of the laminated sheet of the present invention comprises 30 to 70% by weight of cotton fibers and 70% by weight of chemical fibers.
It is a nonwoven fabric containing about 30% by weight. When the amount of the cotton fiber is small, sufficient adhesive strength with a starch-based adhesive or the like usually used for application bonding cannot be obtained. When the amount of the cotton fiber is large, the adhesion to the layer (A) is poor, and when the layer (A) is foamed after laminating the layer (A) and the layer (B), the layer (A) peels off, Produces blisters. The mixing ratio of the cotton fiber and the chemical fiber is 50 to 60% by weight of the cotton fiber and the chemical fiber in terms of the balance between the thermal adhesiveness to the layer (A) and the adhesive strength to the starch-based adhesive used during construction. A range of 50 to 40% by weight is particularly preferred.

As the cotton fiber, cotton lint obtained from raw cotton or fiber from cotton linter may be used. The chemical fibers are preferably made of a thermoplastic resin, and include, for example, polyester resin fibers, polyamide resin fibers such as nylon, polyolefin resin fibers such as polypropylene and polyethylene, and mixtures thereof. In the case of composite chemical fibers composed of two or more resins, fibers of sheath-core type, side-by-side type, eccentric sheath-core type, sea-island type, multi-segment type, etc. can be used.

The basis weight of the layer (B) is from 10 to 200 g / m ^2.
Is preferred. If the basis weight is small, wrinkles may be formed during lamination with the layer (A). If the basis weight is large, the laminated sheet becomes rigid when formed into a laminated sheet, causing a problem in workability and increasing costs. Is not preferred. A more preferred basis weight is 20 to 150 g / m ² . The nonwoven fabric may be manufactured by a spunlace method or a wet spunbond method.

The method of laminating the layer (A) and the layer (B) is as follows.
The layer (B) may be laminated simultaneously with the formation of the layer (A). Alternatively, it can also be obtained by molding the layer (A) and laminating the layer (B). The foaming of the layer (A) may be performed before or after lamination with the layer (B), but the foaming after laminating is performed on the layer (A) and the layer (B).
Is preferable since the adhesiveness of the resin becomes good. The foam is electric,
The heating may be performed on a single wafer or continuously using a heating furnace using gas or the like. The temperature of the heating furnace is preferably from 160 to 250C. When cork powder is blended in the layer (A), the temperature is more preferably set to 160 to 210 ° C. in order to prevent coloring of the cork powder due to heat. The expansion ratio of the layer (A) is 1.1 to 10
Times, particularly preferably 2 to 5 times. If the foaming ratio is small, the cushioning property of the layer (A) is inferior, and when a laminated sheet is used as a bulletin board surface material or the like, pin sticking marks are easily noticeable, which is not preferable. On the other hand, when the expansion ratio is large, the mechanical strength of the layer (A) decreases, which is not preferable.

Further, a grain may be formed on at least one surface of the layer (A). The shape of the grain is satin-like, stripe-like,
Any of a lattice shape and a polka dot shape may be used. In order to apply a texture to the layer (A), embossing is performed in-line using an embossing roll or the like stamped with the texture during the formation of the foamed sheet, or the foamed sheet that has been cooled is heated so that it can be deformed under pressure. The concave and convex pattern may be transferred off-line by softening and pressing the surface provided with the concave and convex pattern.

The foam laminated sheet thus obtained can be used as it is as a bulletin board, an interior material of a building, or the like. Alternatively, a bulletin board having a frame material attached thereto may be attached to a wood-based material such as an insulation board or a plywood with an adhesive, cut into an appropriate size, and attached.

[0030]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the following examples. <Physical Properties of Polyolefin Resin> (1) Density: Measured by a density gradient tube method using a methanol / benzyl alcohol mixture according to ASTM D1505. (2) Melt flow rate (MFR): ASTM D12
38. (3) Mw / Mn: Mw and Mn were measured from a calibration curve (using standard polystyrene) using gel permeation chromatography (GPC) using trichlorobenzene as a solvent, and calculated from the measured values. <Evaluation of Sheet and Foam Laminated Sheet> (1) Sheet Formability: Ease of forming was evaluated when a sheet was prepared by a forming machine. The evaluation criteria are as follows.

・ ・ ・: The sheet could be prepared and wound without any problem. Δ: A sheet could be prepared, but the appearance was inferior. X: The sheet could not be formed. (2) Sheet foaming moldability: When the sheet was foamed in a heating foaming furnace, the appearance of the sheet after foaming was evaluated. The evaluation criteria are as follows.

・ ・ ・: The sheet could be foamed without any problem, and the appearance was good. Δ: The sheet was foam-formed, but the appearance was poor. ×: Poor foaming of sheet (cannot hold air bubbles),
Also, the appearance was poor. (3) Foam laminated sheet surface pin stab performance: A plywood having a thickness of 5 mm was used as a base material, and a foam laminated sheet was fixed on the plywood. Insertion and removal were repeated 50 times, and the occurrence of pin marks was visually evaluated. The evaluation criteria are as follows.

・ ・ ・: The resistance to pin sticking is small. Marks of pin holes are not so noticeable. Δ: There is a slight resistance to pin sticking. Pin holes are slightly noticeable. ×: High resistance to pin stab. Pin hole marks are very noticeable. (4) Sheet / nonwoven fabric adhesion: The sheet was peeled off from the nonwoven fabric, and the adhesion was evaluated. The evaluation criteria are as follows.

・ ・ ・: Strong adhesive strength, causing cohesive failure of the nonwoven fabric. Δ: Adhesive strength was slightly weak, and peeled off at the interface between the sheet and the nonwoven fabric. ×: Adhesion strength was weak, and it easily peeled off at the interface between the sheet and the nonwoven fabric. (5) Workability of the foam laminated sheet: Using a construction adhesive (JISA 6922) specified by the Wall Covering Material Association, the adhesive composition and bonding are performed according to the wall covering standard construction method of the Association. The workability was evaluated.

The base material was a plywood wall having a thickness of 10 mm, and a test was conducted in which a foam laminated sheet was applied to the same vertical wall as in practical use. At this time, the influence on the workability due to the curl and the like of the foamed laminated sheet and the state of adhesion to the wall surface after the adhesion work were visually evaluated. The evaluation criteria are as follows.・ ・ ・: Can be attached without any problem in construction. The adhesive strength after construction is also sufficient.

Δ: After the application, the foamed laminated sheet slightly floated. Adhesive strength after construction is somewhat insufficient. X: peeled off without being fixed by the adhesive. Almost no adhesive strength. <Example 1> Metallocene-based ethylene-α-olefin copolymer (EG81 manufactured by DuPont Dow Elastomer Co., Ltd.)
00) 80 parts by weight and 20 parts by weight of an ethylene-propylene elastomer (EP57P manufactured by Nippon Synthetic Rubber Co., Ltd.) at a composition ratio shown in Table 1 were added with a foaming agent, and an internal mixer (manufactured by Minami-Senju Seisakusho Co., Ltd.) MS-3600), temperature 160 ° C., rotor speed 50 rpm, kneading time 7
After kneading under the conditions of a temperature of 160 ° C. with a heating roll (manufactured by Ishikawajima-Harima Heavy Industries, Ltd.), the thickness is 0.5 mm.
Created a sheet. This is designated as layer (A), and the basis weight is 40 g.
/ M ² nonwoven fabric on one surface of a layer consisting of (Unitika Ltd. Esukotto) (B), were laminated using a laminator layer (A) is a surface temperature of 170 ° C.. With respect to this laminated sheet, the adhesive strength between the sheet and the nonwoven fabric was evaluated, and the laminated sheet was heated and foamed in a heating furnace at a temperature of 210 ° C. for 2 minutes to obtain a foamed laminated sheet. The foam laminated sheet was evaluated for surface pin sticking performance, workability, and the like. The results are summarized in Table 1. <Example 2> A sheet and a foam laminated sheet were prepared in the same manner as in Example 1 except that the composition of the sheet was as described in Table 1, and the obtained sheets were evaluated as in Example 1. . The results are summarized in Table 1. <Comparative Example 1> A sheet and a foam laminated sheet were prepared in the same manner as in Example 1 except that the composition of the sheet was as described in Table 1, and the obtained sheets were evaluated in the same manner as in Example 1. . The results are summarized in Table 1. <Comparative Example 2> Cotton nonwoven fabric (Unitika Co., Ltd.) as the nonwoven fabric
A sheet and a foam laminated sheet were prepared in the same manner as in Example 1 except that Cot Ace Co., Ltd. was used, and each obtained sheet was evaluated. The results are summarized in Table 1. <Comparative Example 3> Example 1 except that an olefin-based nonwoven fabric (Elves manufactured by Unitika Ltd.) was used as the nonwoven fabric.
A sheet and a foam laminated sheet were prepared in the same manner as described above, and the obtained sheets were evaluated. The results are summarized in Table 1.

[0037]

[Table 1]

* EG8100: metallocene ethylene-
α-olefin copolymer, α-olefin; octene-
1. Density: 0.870 g / cm ³ MFR; 1.0 g / 10 min EP57P: Ethylene-propylene elastomer LF625F: Low density polyethylene AC # 3: Azodicarbonamide

[0039]

The foamed laminated sheet made of a polyolefin resin of the present invention is excellent in surface performance such as invisible pin holes when a pin is pierced, and further excellent in various properties such as tensile properties and design properties. It is suitably used for interior materials of buildings, bulletin boards, and the like.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C08J 9/04 101 C08J 9/04 101 C08L 23/08 C08L 23/08 F-term (reference) 4F074 AA02 AA21 AA25 AA98 BA03 BA04 BA05 BA13 BA14 BA16 BA17 BA18 BA20 CA12 CA29 CC04Y CC22X CC32Y DA50 DA54 4F100 AJ04B AK01B AK03A AK03B AK41B AK46B AK62A AK62B AK64A AK66A AK66B AK66B AL05A AL01A01A01 DG01A01 AP01A01 YY00B 4J002 AB013 BB051 BB052 BB102 BB151 BB152 DE256 DF006 DF036 EQ016 ES006 ET006 EV266 FD130 FD326 GF00 GL00 4J100 AA02P AA03Q AA04Q AA07Q AA15Q AA16Q AA17Q AA19 DA A14 DA14

Claims (5)

[Claims] 1. A foamed laminated sheet made of a polyolefin resin in which a layer (B) is laminated on one side of a layer (A). Layer (A): (1) obtained by polymerization using a metallocene catalyst,
(A) a copolymer of ethylene and an α-olefin having 3 to 12 carbon atoms, and (b) a density of 0.86 to 0.9.
2g / cm ³ , (c) melt flow rate is 0.5 to 4
0 g / 10 min, and (d) the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is 1.5 to 5
Ethylene-α-olefin copolymer 100 to 70
Part by weight, (2) a foamed resin layer containing 0 to 30 parts by weight of an olefin-based elastomer Layer (B): 30 to 70% by weight of cotton fiber and chemical fiber 70
Non-woven fabric containing up to 30% by weight 2. The method according to claim 1, wherein the olefin-based elastomer is ethylene-
The polyolefin resin foam laminated sheet according to claim 1, which is a propylene elastomer. 3. The foamed laminated sheet made of a polyolefin resin according to claim 1, wherein the chemical fiber in the layer (B) contains at least one selected from a polyester resin, a polyamide resin and a polyolefin resin. . 4. The layer (A) having an average particle size of 200 to 5000
The polyolefin resin foam laminated sheet according to any one of claims 1 to 3, which comprises a cork powder of μm. 5. A bulletin board surface material comprising the polyolefin resin foamed laminated sheet according to any one of claims 1 to 4.