JP2014113997A - Extrusion molding having core material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extrusion molding having enlarged holding power of a holding part by mounting on a flange, the extrusion molding in which a coating body and a holding part around a core part comprise a thermoplastic elastomer.SOLUTION: In an extrusion molding having a core material, a molding body 1 is formed of the core material 3 having an approximately U-shaped cross section in the longitudinal direction and a coating body 2 made of a thermoplastic elastomer. The coating body 2 has each projecting holding part 4, 4 formed inside the side parts 7, 7 of the core material 3, and a contact part 6 comprising a thermoplastic elastomer composition having a material different from that of the holding part 4 is formed at least on a part or on the whole on the tip side of the holding part 4 having a contact with a flange, to thereby prevent dropout of the molding body 1 from the flange.

Description

  The present invention relates to an extrusion-molded article having a core material such as a weather strip and a trim that is attached to a flange at the periphery of an opening of a vehicle body such as an automobile door, trunk, and back door.

  Covering formed around the core (3) of the extruded product for the purpose of weight reduction and recycling in an extruded product having a core material to be attached to the flange at the periphery of the vehicle body opening, such as an automobile door, trunk, and back door The material of the body (2) is changed from rubber to thermoplastic elastomer, the covering (2) and the holding part (4) (4) are formed of the same thermoplastic elastomer, and the molded product body (1) is connected to the flange (5 ) And the holding portion (4) is in contact with and held by the flange (5), but there is a problem that the holding force is small.

  JP 2006-44341 A   JP 2011-25906 A

Therefore, the material of the holding part (4) according to the example disclosed in Patent Document 1 is made of a part of the holding part (4) that comes into contact with the flange (5) by hardness shore A20-50 (type A durometer hardness 20-50). However, since the holding portion is made of a soft material and has a low holding force with the flange, there is a problem that the molded product body (1) falls off the flange (5).
Further, according to the example disclosed in Patent Document 2 in which the contact layer (6) is formed on the surface of the holding part (4) in FIG. 11, the powder (phenol antioxidant) contained in the thermoplastic elastomer of the holding part (4). Component) is transferred to the contact layer (6) over time and the powder is extracted on the surface of the contact layer (6), so that the contact layer (6) and the flange (5) are easily slipped. The holding power of (6) and the flange (5) is remarkably impaired, and there is a problem that the molded product body (1) falls off from the flange (5).

  The present invention solves the above-described problems. In an extruded product having a core material, the molded product body (1) is composed of a core material (3) having a substantially U-shaped cross section in the longitudinal direction and a thermoplastic elastomer. The covering body (2) is formed with holding portions (4) and (4) projecting from the inner side of the side portions (7) and (7) of the core material (3). A contact portion (6) made of a thermoplastic elastomer composition made of a material different from that of the holding portion (4) is formed on at least a part or the whole of the front end side of the holding portion (4) in contact with the flange (5). The problem that the molded body (1) falls off the flange is solved.

And the thermoplastic elastomer composition of this contact part (6) is,
Component (a) 30-70 parts by weight of polyethylene polymerized by a single site catalyst, or a copolymer based on it
Component (b) a block copolymer comprising at least two polymer blocks A mainly composed of vinyl aromatic compounds and at least one polymer block B mainly composed of conjugated diene compounds, and / or 5 to 25 parts by weight of a hydrogenated block copolymer obtained by hydrogenation,
Component (c) 10-30 parts by weight of a crystalline ethylene or propylene homopolymer or a crystalline copolymer based on this ethylene or propylene
Component (d) A thermoplastic resin composition (A) comprising 5 to 25 parts by weight of a rubber softening agent is blended, and the thermoplastic resin composition (A) is 100 parts by weight,
A thermoplastic elastomer composition comprising 2 to 8 parts by weight of component (e) petroleum resin and / or hydrogenated petroleum resin obtained by hydrogenation.

  Furthermore, component (f) inorganic filler is blended in the thermoplastic elastomer resin composition of the contact portion (6) described above, and the blending amount of the component (f) inorganic filler is the thermoplastic resin composition. (A) It is a thermoplastic elastomer composition characterized by blending 1 to 20 parts by weight of component (f) inorganic filler with respect to 100 parts by weight.

  A contact portion (6) having a lower side (L) longer than an upper side (S) of the holding portion (4) is formed in a part of the holding portion (4).

  A contact portion (6) is formed on the entire holding portion (4).

  The contact portion (6) is formed in the holding portion (4) on one side.

  The contact portion (6) is formed in the holding portions (4) and (4) on both sides of one and the other.

  The holding portion (4) is formed on one of the side portions (7).

  The thermoplastic elastomer composition of the contact portion (6) is formed on a part of the covering (2) inside the side portion (7).

The covering (2) is characterized in that it is formed on a part or the whole of the periphery of the core (3).
In addition, the inside of one of the core members (3) is characterized in that the cover (2) and the core member (3) are not thermally fused to form a space (17).

  The contact portion (6) is formed of an adhesive thermoplastic elastomer composition.

  The contact portion (6) is formed of a thermoplastic elastomer composition having a type A durometer hardness of 50 to 90, and the contact portion (6) is made of a material harder than the holding portion (4). It is characterized by being formed.

  The core material (3) is formed of a hard synthetic resin or metal.

Since the present invention is configured as described above, the molded product body (1) is formed by a core material (3) having a substantially U-shaped cross section in the longitudinal direction and a covering body (2) of a thermoplastic elastomer, and the core. The holding part (4) (4) is formed inside the side parts (7) and (7) of the material (3) by the covering body (2) to form the holding part (4) and contact the flange (5). The surface of the flange (5) is formed by forming a contact portion (6) made of a thermoplastic elastomer composition of a material different from that of the holding portion (4) on a part of 4), and the contact portion (6) is adhesive. The problem is that the molded body (1) is less slippery from the flange (5), the holding force is increased, and the molded body (1) falls off. (6) is a thermoplastic elastomer composition having a type A durometer hardness of 50 to 90, and the holding (4) By forming the harder material of the thermoplastic elastomer composition, it is possible to reliably hold the flange (5).
A contact portion (6) whose lower side L is longer than the upper side S is formed at a part of the holding portion (4) at the tip of the holding portion (4) so that the contact surface with the flange (5) is increased and held. There is an effect that power improves.
Furthermore, the powder (components such as phenolic antioxidant) contained in the thermoplastic elastomer of the holding part (4) is not transferred to the surface of the contact part (6) due to the change over time, and the contact is not caused. There exists an effect that the adhesiveness of a part (6) is not impaired.

  It is a vertical side view of the molded product main body which has a core material of this invention.   It is the vertical side view which formed the contact part from which the lower part side (L) becomes longer than the upper part side (S) of the holding | maintenance part of the molded article main body of this invention.   It is the vertical side view which formed the contact part in the whole holding | maintenance part of the molded article main body of this invention.   It is the vertical side view in which the contact part formed in the holding part of the both opposite sides of the molded product main body of this invention.   It is the vertical side view which the contact part formed in a part of one holding part of the molded article main body of this invention, and formed the contact part in the whole other holding part.   It is a vertical side view in which the holding part of the molded product main body of the present invention is formed on one side part, and a contact part is formed on a part of the covering inside the other side part.   The molded product body of the present invention is a longitudinal side view in which a space is formed inside one side.   It is the slope view which formed the cut part in the core material of this invention.   It is a manufacturing method of the extrusion molded article which has a core material which manufactures the core material of this invention continuously.   It is a vertical side view which shows the state which mounted | wore the flange of the vehicle body opening part periphery with the molded article main body of this invention.   It is a longitudinal cross-sectional view of the molded product main body which has the conventional core material.

Referring to the drawings as an embodiment of the present invention, what is shown in FIG. 1 is a core material such as a weather strip and a trim that is attached to a flange (5) at the periphery of a vehicle body opening such as an automobile door, trunk, and back door. 1 shows a cross section of an extruded molded product having a molded product main body (1) comprising a core material (3) made of synthetic resin or metal having a substantially U-shaped cross section in the longitudinal direction and an olefinic thermoplastic elastomer or styrene thermoplastic elastomer. The holding body (4) (4) is formed on the inner side of the side part (7) (7) of the core material (3), and the flange (2) is formed on the covering body (2). A contact portion (6) made of a thermoplastic elastomer composition made of a material different from that of the holding portion (4) is formed on a part of the holding portion (4) on one side in contact with (5) of the holding portion (4). It is formed in a part on the tip side.
And this contact part (6) is formed with the adhesive thermoplastic elastomer composition, this contact part (6) is formed with the thermoplastic elastomer composition of type A durometer hardness 50-90, and this contact part (6) is formed of a thermoplastic elastomer composition made of a material harder than the holding portion (4).
Furthermore, the covering (2) is formed on a part or the whole of the periphery of the core material (3) as necessary, and the periphery of the core material (3) and the covering body (2) are made of gold during extrusion molding. As shown in FIG. 7, the core material (3) and the cover (2) are not partially heat-sealed inside the core material (3) as shown in FIG. ).

  In the structure shown in FIG. 2, a contact portion (6) whose lower side (L) is longer than the upper side (S) of the holding portion (4) is formed in a part of the holding portion (4).

  In the case shown in FIG. 3, a contact portion (6) is formed on the entire holding portion (4).

4 shows a part in which holding portions (4) and (4) projecting from the side portions (7) and (7) of the core material (3) are formed, and are in contact with the flange (5). The contact portions (6) and (6) are formed in the holding portions (4) and (4) on both sides of the cover, and the covering (2) is formed around the core (3).
Furthermore, the shape of the hollow seal portion (9) is formed by various various shapes such as a square shape, a circular shape, and an oval shape as necessary, and the outside of the connecting portion (8) of the core material (3) or the shape shown in FIG. In this way, it is formed at a desired position outside the side portion (7).

  5, the contact portion (6) is formed on a part of one holding portion (4), and the contact portion (6) is formed on the other small holding portion (4).

  6, the holding part (4) is formed only inside one side part (7), and inside the other side part (7), the contact part (6 ) Is formed.

  In the structure shown in FIG. 7, on one inner side of the core material (3), the cover (2) and the core material (3) are not thermally fused to form a space (17), and the cover (2) The thermoplastic elastomer composition of the contact portion (6) is formed on a part of and the entire holding portion (4).

  FIG. 8 shows a core material (3) having a substantially U-shaped cross section used in the present invention, in which cut portions (16) and (16) are formed. The cut portions (16) and (16) have various desired shapes. Cut into shape.

9 shows a manufacturing method for continuously producing a core (3) of a hard synthetic resin and a covering (2) made of an olefin-based thermoplastic elastomer or a styrene-based thermoplastic elastomer. The first extruder ( 21), a hard synthetic resin is injected into the core material (3) having a substantially U-shaped cross section by the first die (22), and after passing through the first cooling water tank (23), the take-off roller (24). After that, the excision parts (16) and (16) are desired as shown in FIG. 6 in the side parts (7) and (7) and the connection part (8) of the core material (3) having a substantially U-shaped cross section by the excision machine (25). Cut into various shapes.
Then, the molten thermoplastic elastomer that enters the inside of the second mold die (27) and forms the covering (2) and the holding portion (4) injected into the second extrusion molding machine (26), 3 The molten thermoplastic elastomer composition forming the contact portion (6) injected into the extruder (28) passes through the injection pipes (30) and (30), and the inside of the second mold die (27). And heat-sealing around the core (3), and then pass through the second cooling tank (29).
In the case of forming the hollow seal portion (9), a fourth extruder is further added to heat melt around the core material (3) and the cover (2) inside the second mold die (27). To wear.

  11 shows a state in which the molded product body (1) of FIG. 10 is mounted on the flange (5) at the periphery of the vehicle body opening.

For the thermoplastic elastomer composition forming the contact portion (6),
Component (a): Essential component Polyethylene polymerized with a single-site catalyst, or a copolymer based on it, preferably polyethylene polymerized with a single-site catalyst, preferably a single-site catalyst (metallocene catalyst) High-density polyethylene (low-pressure polyethylene), low-density polyethylene (high-pressure polyethylene), linear low-density polyethylene (ethylene and a small amount, preferably 1 to 10 mol% of butene-1, hexene-1, octene) 1 or more selected from polyethylene, ethylene-propylene copolymer, ethylene / vinyl acetate copolymer, and the like.

Preferably, it is an ethylene octene copolymer having a specific gravity of 0.92 or less and a melting point of 95 ° C. or less and produced using a metallocene catalyst (single site catalyst).
These generally have a melt flow rate (MFR) of 0.5 g / 10 min or more at a temperature of 190 ° C. and a load of 2.16 kg. One or more of these may be combined.

Component (b): Essential component A block copolymer comprising at least two polymer blocks A mainly composed of vinyl aromatic compounds and at least one polymer block B mainly composed of conjugated diene compounds, or What is obtained by hydrogenation or a mixture thereof, for example, vinyl aromatic compounds having a structure such as ABA, BABA, ABAABA, etc. Examples thereof include conjugated diene compound block copolymers and / or hydrogenated products thereof.

  The above (hydrogenated) block copolymer (wherein (hydrogenated) block copolymer means a block copolymer and / or a hydrogenated block copolymer) is a vinyl aromatic compound in an amount of 5 to 60. % By weight, preferably 20 to 50% by weight.

  The polymer block A mainly composed of a vinyl aromatic compound is preferably composed only of a vinyl aromatic compound, or a copolymer of a vinyl aromatic compound of 50% by weight or more, preferably 70% by weight or more and a conjugated diene compound. Block or hydrogenated product.

  The polymer block B mainly composed of a conjugated diene compound is preferably composed of only a conjugated diene compound, or a copolymer block of a vinyl aromatic compound with 50% by weight or more, preferably 70% by weight or more of a conjugated diene compound. Or its hydrogenated product.

  In each of the polymer block A mainly composed of the vinyl aromatic compound and the polymer block B mainly composed of the conjugated diene compound, the distribution of the vinyl compound or the conjugated diene compound in the molecular chain is random and tapered (in the molecular chain). Along which the monomer component increases or decreases), partly in block form, or any combination thereof.

  When there are two or more polymer blocks A mainly composed of vinyl aromatic compounds or polymer blocks B mainly composed of conjugated diene compounds, they may have the same structure or different structures.

  As the vinyl aromatic compound constituting the (hydrogenated) block copolymer, for example, one or more kinds can be selected from styrene, α-methylstyrene, vinyltoluene, p-tert-butylstyrene, and the like. Of these, styrene is preferred. Further, as the conjugated diene compound, for example, one or more kinds are selected from butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-1,3-butadiene, etc., among which butadiene, isoprene, and these The combination of is preferable.

  The micro bond in the polymer block B mainly composed of the conjugated diene compound can be selected arbitrarily.

  In the butadiene block, the 1,2-micro bond is preferably 20 to 50%, particularly preferably 25 to 45%.

  In the polyisoprene block, 70 to 100% by weight of the isoprene compound has 1,4-micro bonds, and at least 90% or more of the aliphatic double bonds based on the isoprene compound are hydrogenated. Those are preferred.

  The weight average molecular weight of the (hydrogenated) block copolymer used in the present invention having the structure described above has a lower limit of 5,000 or more, preferably 10,000 or more, more preferably 80,000 or more, and an upper limit. Is in the range of 400,000 or less, preferably 300,000 or less, more preferably 150,000 or less. The molecular weight distribution (ratio (Mw / Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn)) is preferably 10 or less, more preferably 5 or less, and more preferably 2 or less. The molecular structure of the (hydrogenated) block copolymer may be linear, branched, radial, or any combination thereof.

Component (c): Essential component The component (c) used in the present invention includes a crystalline ethylene or propylene homopolymer or a crystalline copolymer mainly composed of ethylene or propylene. For example, high-density polyethylene, low-density polyethylene, crystalline ethylene polymer such as ethylene / butene-1 copolymer, isotactic polypropylene, propylene / ethylene copolymer, propylene / butene-1 copolymer, propylene / Examples thereof include crystalline propylene-based polymers such as ethylene butene-1 terpolymer. Among these, a polypropylene resin is preferable.

Component (d): Essential Component The rubber softener component (d) used in the present invention may be a non-aromatic rubber softener component or an aromatic rubber softener component, and an ester plasticizer. In particular, non-aromatic mineral oils and ester plasticizers are preferred. Non-aromatic mineral oil softeners include paraffin softeners in which the number of carbon atoms in the paraffin chain accounts for 50% or more of the total number of carbon atoms.

Component (e): Essential component The petroleum resin component (e) used in the present invention is copolymerized from raw materials of unsaturated hydrocarbons obtained in various industries of the petroleum refining industry and petrochemical industry, particularly the decomposition process of naphtha. Aliphatic petroleum resin made from C5 fraction, aromatic petroleum resin made from C9 fraction, alicyclic petroleum resin made from dicyclopentadiene, and terpene Examples thereof include copolymer resins, copolymer petroleum resins obtained by copolymerization of two or more of these, and hydrogenated petroleum resins obtained by hydrogenating them. The hydrogenated petroleum resin of the above-described resin can be obtained by hydrogenating the above resin by a method known to those skilled in the art. Specifically, Imabe (hydrogenated petroleum resin) manufactured by Idemitsu Petrochemical Co., Ltd., Alcon (hydrogenated petroleum resin) manufactured by Arakawa Chemical Industries, Ltd., and Clearon (hydrogenated terpene resin) manufactured by Yashara Chemical Co., Ltd. Commercial products such as Escorez (aliphatic hydrocarbon resin) manufactured by Tonex Co., Ltd. can be used.

  The thermoplastic resin composition (A) is composed of components (a), (b), (c), and (d), and the blending amounts thereof are (a) 30 to 70 parts by weight, (b) 5 -25 parts by weight, (c) is 10-30 parts by weight, and (d) is 5-25 parts by weight. Preferably, (a) is 40-60 parts by weight, (b) is 10-20 parts by weight, (c) is 15-25 parts by weight, and (d) is 10-20 parts by weight.

  As for the compounding quantity of a component (e), 2-8 weight part is preferable with respect to 100 weight part of thermoplastic resin compositions (A).

(F) Inorganic filler The thermoplastic elastomer composition of this invention can mix | blend an inorganic filler (f) component as needed. In addition to the effect of improving some physical properties such as compression set of a molded article obtained from the thermoplastic elastomer composition, the component (f) has an economic advantage due to the increase in the amount. As component (f), wollastonite, chlorite, calcium carbonate, talc, silica, diatomaceous earth, barium sulfate, magnesium carbonate, magnesium hydroxide, mica, clay, titanium oxide, carbon black, glass fiber, hollow glass balloon, Examples thereof include carbon fiber, calcium titanate fiber, natural silicic acid, and synthetic silicic acid (white carbon). Of these, calcium carbonate, wollastonite, chlorite and talc are particularly preferred.
The amount of component (f) is preferably 1 to 20 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition (A) when blended.

  Moreover, although the usage example of the material of the molded article main body (1) used for this invention is demonstrated, it is not limited to this. The core material (3) having a substantially U-shaped cross section is made of a metal or a hard synthetic resin, and the hard synthetic resin is an olefin resin or olefin such as a polypropylene resin having a type A durometer hardness (JIS K6253, value after 15 seconds) of 90 or more. A mixed synthetic resin in which 20 to 50% by weight of a powder such as talc is mixed with a system resin is used to increase the rigidity and reduce the linear expansion coefficient.

  Further, the covering (2) and the holding part (4) are formed of an olefin-based thermoplastic elastomer or a styrene-based thermoplastic elastomer, and use type A durometer hardness (JIS K6253, value after 15 seconds) 50-80. It is preferable.

Moreover, as a material of the thermoplastic elastomer composition which forms a contact part (6), it is preferable to use the thermoplastic elastomer composition of type A durometer hardness (JIS K6253, 15 second after value) 50-90.
Furthermore, it is preferable to use a type A durometer hardness (JIS K6253, value after 15 seconds) 20 to 50 as the olefinic thermoplastic elastomer or styrene thermoplastic elastomer forming the hollow seal portion (9).

  Next, although the material used in the Example of the thermoplastic elastomer composition which forms the contact part (6) of this invention is demonstrated, this invention is not limited to this.

The material of the thermoplastic elastomer composition forming the contact portion (6) is as component (a):
Product name: KS240, manufactured by Nippon Polyethylene Co., Ltd., metallocene catalyst ethylene / 1-hexene copolymer, density 0.88 g / cm 3, MFR (190 ° C., 21.18 N) 2.2 g / 10 min 50 parts by weight As component (b),
Product name: Septon 4055, manufactured by Kuraray Co., Ltd., -styrene-isoprene block copolymer, styrene content 30% by weight, isoprene content 70% by weight, weight average molecular weight 260,000, molecular weight distribution 1.3, hydrogenation The rate of 90% or more as 15 parts by weight component (c),
Product name: FW4BT, manufactured by Nippon Polypro Co., Ltd., polypropylene random copolymer, MFR (230 ° C., 21.18N) 7 g / 10 min as 20 parts by weight component (d),
Product name: Diana process oil PW-90, manufactured by Idemitsu Kosan Co., Ltd., non-aromatic hydrocarbon rubber softener (Oil) (paraffinic oil), 15 parts by weight ((a) + ( b) + (c) + (d) = 100 parts by weight)
As component (e)
Product name: Imarp P-140, manufactured by Idemitsu Petrochemical Co., Ltd., petroleum resin, softening point 140 ° C., average molecular weight 910, density 1.03 as 5 parts by weight component (f),
The following physical property values were obtained using a pellet-like material obtained by blending, melting and kneading 10 parts by weight of calcium carbonate (CaCO3): NS400 (manufactured by Sankyo Seiko Co., Ltd.).

The thermoplastic elastomer composition (hereinafter simply referred to as material A) forming the contact portion (6) had the following physical property values.
1. Type A durometer hardness 74 (JIS K6253, value after 15 seconds)
2. Tensile strength 14MPa (JIS K6251)
3. 100% tensile stress 2.8 MPa (JIS K6251)
4. Elongation 810% (JIS K6251)

Next, the following physical property values were obtained for the olefinic thermoplastic elastomer (hereinafter simply referred to as material B) manufactured by Riken Technos Co., Ltd., which forms the holding portion (4) used in the examples.
1. Type A durometer hardness 71 (JIS K6253, value after 15 seconds)
2. Tensile strength 17MPa (JIS K6251)
3. 100% tensile stress 3.1 MPa (JIS K6251)
4. Elongation 960% (JIS K6251)

In Example 1, the molded product body (1) in which the contact portion (6) made of the material A is formed on the holding portion (4) made of the material B is extruded to form the molded product as shown in FIG. The body (1) is mounted on the flange (5), and the holding force and insertion force are measured and shown in Table 1.
In Comparative Example 1, the molded product body (1) having only the holding portion (4) made of the material B not forming the contact portion (6) is extruded and the molded product body (1) is flanged as shown in FIG. It is attached to (5) and the holding force and insertion force are measured and shown in Table 1.
As is clear from Table 1, it can be seen that Example 1 in which the contact portion (6) is formed has a large holding force and is excellent. And it turns out that the problem that a molded article main body (1) falls off from a flange is solved.
In addition, ○ of evaluation is good and x judges bad.

DESCRIPTION OF SYMBOLS 1 Molded article main body 2 Cover body 3 Core material 4 Holding part 5 Flange 6 Contact part 7 Side part 8 Connection part 9 Hollow seal part 16 Cutting part 17 Space part 21 First extrusion molding machine 22 First die die 23 First cooling Water tank 24 Take-off roller 25 Cutting machine 26 Second extrusion molding machine 27 Second mold die 28 Third extrusion molding machine 29 Second cooling tank 30 Injection pipe S Upper side L Lower side

Claims (15)

  In an extrusion molded product having a core material attached to a flange (5) at the periphery of a car body opening of an automobile, the molded product body (1) is constituted by a core material (3) having a substantially U-shaped cross section in the longitudinal direction and a covering (2). A part of the holding part (4) that is formed and forms holding parts (4) and (4) inside the side parts (7) and (7) of the core material (3) and contacts the flange (5) An extruded product having a core material, wherein a contact portion (6) made of a thermoplastic elastomer composition is formed on the core material. The thermoplastic elastomer composition of the contact portion (6) according to claim 1, wherein the component (a) is a polyethylene polymerized with a single site catalyst, or a copolymer mainly composed of 30 to 70 parts by weight.
Component (b) a block copolymer comprising at least two polymer blocks A mainly composed of vinyl aromatic compounds and at least one polymer block B mainly composed of conjugated diene compounds, and / or 5 to 25 parts by weight of a hydrogenated block copolymer obtained by hydrogenation,
Component (c) 10-30 parts by weight of a crystalline ethylene or propylene homopolymer or a crystalline copolymer based on this ethylene or propylene
With respect to 100 parts by weight of the thermoplastic resin composition (A) comprising 5 to 25 parts by weight of component (d) rubber softener,
The extruded product having a core material according to claim 1, wherein 2 to 8 parts by weight of component (e) petroleum resin and / or hydrogenated petroleum resin obtained by hydrogenation is blended. The component (f) inorganic filler is added in an amount of 1 to 20 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition (A) in the thermoplastic elastomer resin composition of the contact part (6) according to claim 2. An extruded product having a core material according to claim 2, wherein parts are blended.   The contact portion (6) having a lower side (L) longer than an upper side (S) of the holding portion (4) is formed in a part of the holding portion (4). An extruded product having the core material according to any one of the above items.   The extruded part having a core material according to any one of claims 1 to 4, wherein a contact part (6) is formed on the entire holding part (4).   The extruded product having a core material according to any one of claims 1 to 5, wherein the contact portion (6) is formed on the holding portion (4) on one side.   6. The extrusion molding having a core material according to any one of claims 1 to 5, wherein the contact portion (6) is formed on the holding portions (4) and (4) on both sides of one and the other. Goods.   The extruded part having a core material according to any one of claims 1 to 6, wherein the holding part (4) is formed on one of the side parts (7).   9. The thermoplastic elastomer composition of the contact portion (6) is formed on a part of the covering (2) inside the side portion (7), according to claim 1. Extruded product with a core material.   The extrusion-molded article having a core material according to any one of claims 1 to 9, wherein the covering body (2) is formed on a part or the whole of the periphery of the core material (3).   The space (17) is formed in any one of the inside of the core material (3), wherein the covering (2) and the core material (3) are not thermally fused. An extruded product having the core material according to claim 1.   The extruded product having a core material according to any one of claims 1 to 11, wherein the contact portion (6) is formed of an adhesive thermoplastic elastomer composition.   The extruded product having a core material according to any one of claims 1 to 12, wherein the contact portion (6) is formed of a thermoplastic elastomer composition having a type A durometer hardness of 50 to 90. .   The extrusion molding having a core material according to any one of claims 1 to 13, wherein the covering (2) is formed of a thermoplastic elastomer composition made of a material harder than the holding portion (4). Goods.   The extruded product having a core material according to any one of claims 1 to 14, wherein the core material (3) is formed of a hard synthetic resin or a metal.

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