JP2005144674A

JP2005144674A - Monolithic molded product of metal or woody material and thermoplastic resin and its manufacturing method

Info

Publication number: JP2005144674A
Application number: JP2003380783A
Authority: JP
Inventors: Hidetoshi Sakai; 秀敏坂井; Atsuhito Inoue; 篤人井上
Original assignee: Toray Industries Inc
Current assignee: Toray Industries Inc
Priority date: 2003-11-11
Filing date: 2003-11-11
Publication date: 2005-06-09

Abstract

<P>PROBLEM TO BE SOLVED: To provide a monolithic molded product enhanced in the degree of freedom of a shape having both of the characteristics of a metal or woody material and the characteristics of a thermoplastic resin molded product, and a method for manufacturing the same with high productivity. <P>SOLUTION: The surface of a molded product comprising a metal or wood is coated with a solution in which a thermoplastic resin becoming a film is dissolved to form a thermoplastic resin layer with a thickness of 10-100 μm and this thermoplastic resin film is thermally welded to the thermoplastic resin molded product to obtain the monolithic molded product wherein the metal or wood and a thermoplastic resin are integrated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は金属または木質系材料と熱可塑性樹脂を一体化することで、金属または木質系材料成形体では困難な複雑形状や熱可塑性樹脂成形体では不十分な剛性などの機械特性を各々補うことでより高機能な成形体を得る。具体的には、携帯端末や電子機器の筐体、土木建築関係や車両用の継ぎ手つき補強部材、土木建築関係の構造体や部品、家具や家電の部品、ＡＶ機器や電子機器の筐体などに関する。 The present invention integrates a metal or wood-based material and a thermoplastic resin to compensate for mechanical properties such as complicated shapes that are difficult for metal or wood-based material molded bodies and rigidity that is insufficient for thermoplastic resin molded bodies. To obtain a molded product with higher function. Specifically, cases for portable terminals and electronic devices, civil engineering and construction-related joint members for vehicles, civil engineering and construction-related structures and parts, furniture and household appliance parts, AV equipment and electronic device casings, etc. About.

鉄やアルミニウム合金などに代表される金属は、高い強度や剛性を生かし土木建築資材や車両の補強部材等に使用されている。中でも金属としては比較的軽量なアルミニウム合金やマグネシウム合金等は、ノート型パソコンや携帯電話等の携帯端末や電子機器、情報通信機器、家庭電化製品などの筐体としても使用されている。しかし、金属は優れた機械強度を有するものの、複雑形状の成形が困難であったり重量が大きくなることが問題とされている。 Metals typified by iron and aluminum alloys are used for civil engineering and building materials, vehicle reinforcement members, and the like, taking advantage of high strength and rigidity. Among these, relatively light aluminum alloys and magnesium alloys are also used as casings for portable terminals such as notebook computers and mobile phones, electronic devices, information communication devices, and home appliances. However, although metal has excellent mechanical strength, it has been a problem that it is difficult to form a complicated shape and the weight is increased.

一方、熱可塑性樹脂は射出成形等の成形加工技術の活用により複雑形状の成形が可能であり軽量であることから、前記アルミニウム合金やマグネシウム合金の用途と同様、携帯端末や電子機器、情報通信機器、家庭電化製品などの筐体に使用されている。しかし、熱伝導率が低いことから機器内で発生する熱を蓄積し内部部品の故障の原因になったり、強度や剛性が低いことを補うために肉厚を厚くし機器全体が大きくなったりする等が問題とされている。 On the other hand, since thermoplastic resins can be molded into complex shapes by utilizing molding technology such as injection molding and are lightweight, mobile terminals, electronic devices, and information communication devices are used in the same manner as the applications of aluminum alloys and magnesium alloys. Used in housings for home appliances. However, the low thermal conductivity causes heat generated in the equipment to accumulate, causing failure of internal components, and increasing the wall thickness to make up the overall equipment to compensate for low strength and rigidity. Etc. are regarded as problems.

これらの問題点を解決するために、特許文献１には金属製の平板の外周囲に設置する外周壁部の少なくとも一部を合成樹脂のアウトサート成形で形成する金属と樹脂の一体化成形体が記載されているが、金属と樹脂との間に接着剤となるものが無いため両者の間で十分な接着が得られない。金属製の平板に加工してアンダーカットを設けることで金属と樹脂の接着することも考えられるが、金属の形状が制約される。 In order to solve these problems, Patent Document 1 discloses a metal-resin integrated molded body in which at least a part of an outer peripheral wall portion installed on the outer periphery of a metal flat plate is formed by synthetic resin outsert molding. Although described, since there is no adhesive between the metal and the resin, sufficient adhesion cannot be obtained between the two. Although it is conceivable to bond the metal and the resin by forming a metal flat plate and providing an undercut, the shape of the metal is restricted.

金属と熱可塑性樹脂との接着力を改善するための接着剤として、特許文献２には金属と接着性を有する合成樹脂層と、熱可塑性樹脂と接着性を有する合成樹脂層、およびこれらの間に介挿されて両層を接着させる層間接着層を積層した合成樹脂層を、金属板と熱可塑性樹脂成形体の接着剤として使用する一体化成形体が記載されている。特許文献３には金属板に熱可塑性樹脂でラミネートもしくはプレコートした原板をプレス成形フォーミングし、該プレスフォーミングした金属部品を射出成形機の金型内に装着し、リブ、ボス等の構成部位を射出成形により形成した金属と熱可塑性樹脂の一体化成形体が記載されている。また、特許文献４には熱硬化性合成樹脂で被覆した金属フレームの熱硬化性合成樹脂面に熱可塑性樹脂を熱融着させて一体化成形体を得る方法が記載されている。しかしながら、これは平板を想定した金属板に接着剤層を形成させ、その後プレス成形した後に熱可塑性樹脂と一体化成形するため、金属の形状についてはプレス成形できる範囲であり形状の自由度が小さくなる。 As an adhesive for improving the adhesive force between a metal and a thermoplastic resin, Patent Document 2 discloses a synthetic resin layer having an adhesive property with a metal, a synthetic resin layer having an adhesive property with a thermoplastic resin, and a gap between them. An integrated molded body is described in which a synthetic resin layer in which an interlayer adhesive layer that is interposed between two layers is bonded is used as an adhesive between a metal plate and a thermoplastic resin molded body. In Patent Document 3, an original sheet obtained by laminating or pre-coating a metal plate with a thermoplastic resin is press-formed, the press-formed metal part is mounted in a mold of an injection molding machine, and components such as ribs and bosses are injected. An integrated molded body of a metal and a thermoplastic resin formed by molding is described. Patent Document 4 describes a method of obtaining an integrated molded body by thermally fusing a thermoplastic resin to a thermosetting synthetic resin surface of a metal frame coated with a thermosetting synthetic resin. However, this is because the adhesive layer is formed on a metal plate assuming a flat plate, and then press-molded and then integrally molded with the thermoplastic resin, so the metal shape is within the range that can be press-molded and the degree of freedom of the shape is small. Become.

また、針葉樹や広葉樹などに代表される木材および、集成材、合板、パーティクルボード、ファイバーボード等の木質材料は、高い強度や剛性を生かし土木建築資材や家具などに使用されている。しかし、木質系材料は優れた機械強度を有するものの、複雑形状の成形が困難であったり、腐敗や虫食いなどが問題とされている。 Moreover, wood materials such as conifers and hardwoods, and wood materials such as laminated timber, plywood, particleboard, and fiberboard are used for civil engineering and building materials, furniture, and the like by taking advantage of high strength and rigidity. However, although wood-based materials have excellent mechanical strength, it is difficult to form complex shapes, and rot and insect erosion are problems.

一方、熱可塑性樹脂は射出成形等の成形加工技術の活用により複雑形状の成形が可能であり、木質系材料の問題である腐敗や虫食いを防ぐ目的から前記木質系材料の用途と同様に土木建築資材や家具の部品などに使用されている。しかし、熱可塑性樹脂はクリープ特性に劣ることや剛性が低いため全てを補うまでには至っていない。 On the other hand, thermoplastic resins can be molded into complex shapes by utilizing molding technology such as injection molding, and civil engineering and architecture are used in the same way as the use of wooden materials for the purpose of preventing decay and insect erosion, which are problems of wooden materials. Used for materials and furniture parts. However, the thermoplastic resin is inferior in creep characteristics and low in rigidity, so that it has not been fully compensated.

これらの問題点を解決するため、さらには木質系材料の意匠性と熱可塑性樹脂の特性を生かして木質成形体と熱可塑性樹脂を一体化した成形体が提案されている。具体的には特許文献５に長さ５０ｍｍ以上の強化繊維を少なくとも５０重量％以上含有する熱可塑性樹脂シートと木質系薄板を積層成形してなる積層板、さらに当該熱可塑性樹脂シートと木質系薄板との間に軟化点が１５０℃以下の熱可塑性樹脂層を介在させる積層板が記載されている。また、特許文献６には天然木をスライスしたものに熱可塑性樹脂を含浸させ、この積層シートを金型キャビティー内面に沿わせてセットし射出成形時に溶融樹脂と一体化させる方法が記載されている。さらに、特許文献７には木質層の表面に熱可塑性樹脂に接着性を持つホットメルト接着剤層を備え、熱可塑性樹脂組成物からなる成形体と熱で一体化する方法が記載されている。しかし、これらは木質系成形体は板やシート状の成形体で、接着剤層を形成する際箇所は平面である必要があり、複雑な形状に対応することができない。
特開平４−３７０９３号公報（特許請求範囲）特開平５−２６９７８７号公報（特許請求範囲第１項）実開２００１−３１５１６２号公報（特許請求範囲第１項）実公２００１−２９８２７７号公報（特許請求範囲第１項）特開平６−２３８８２１号公報特公平７−５５５１５号公報特開２００３−１５４６０５号公報 In order to solve these problems, there has been proposed a molded body in which a wooden molded body and a thermoplastic resin are integrated by taking advantage of the design of a wooden material and the characteristics of a thermoplastic resin. Specifically, Patent Document 5 discloses a laminate obtained by laminating a thermoplastic resin sheet containing at least 50% by weight or more of reinforcing fibers having a length of 50 mm or more and a wood thin plate, and further, the thermoplastic resin sheet and the wood thin plate. And a laminate having a softening point of 150 ° C. or less interposed therebetween. Patent Document 6 describes a method in which a slice of natural wood is impregnated with a thermoplastic resin, this laminated sheet is set along the inner surface of the mold cavity, and is integrated with the molten resin at the time of injection molding. Yes. Furthermore, Patent Document 7 describes a method in which a hot-melt adhesive layer having adhesiveness to a thermoplastic resin is provided on the surface of a wood layer and integrated with a molded body made of a thermoplastic resin composition by heat. However, these wood-based molded bodies are plate- or sheet-shaped molded bodies, and when the adhesive layer is formed, the location needs to be a flat surface and cannot cope with complicated shapes.
JP-A-4-37093 (Claims) JP-A-5-269787 (Claim 1) Japanese Utility Model Publication No. 2001-315162 (Claim 1) Japanese Utility Model Publication No. 2001-298277 (Claim 1) Japanese Patent Laid-Open No. 6-238821 Japanese Patent Publication No. 7-55515 JP 2003-154605 A

本発明は、上述した問題点を解決し、形状の自由度が高く金属と熱可塑性樹脂と接着力が十分ある金属と熱可塑性樹脂一体化成形体を提供するものである。 The present invention solves the above-described problems and provides a metal / thermoplastic resin integrated molded article having a high degree of freedom in shape and sufficient adhesion between the metal and the thermoplastic resin.

上記目的を達成する本発明は以下の構成からなる。すなわち、
（１）金属または木質系材料の成形体と熱可塑性樹脂成形体と熱可塑性樹脂層からなる成形体であって、該金属または木質系材料の成形体と該熱可塑性樹脂成形体とが厚さ１０〜１００μｍの該熱可塑性樹脂層によって溶着されてなることを特徴とする金属または木質系材料と熱可塑性樹脂の一体成形体。 The present invention for achieving the above object has the following configuration. That is,
(1) A molded body comprising a molded body of a metal or wood-based material, a thermoplastic resin molded body, and a thermoplastic resin layer, wherein the molded body of the metal or wood-based material and the thermoplastic resin molded body are thick. An integrally molded body of a metal or wood-based material and a thermoplastic resin, which is welded by the thermoplastic resin layer of 10 to 100 µm.

（２）前記熱可塑性樹脂層を形成する熱可塑性樹脂が、溶媒１００重量％に対し５重量％以上可溶であることを特徴とする（１）記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 (2) The thermoplastic resin forming the thermoplastic resin layer is soluble in 5% by weight or more with respect to 100% by weight of the solvent. Integrated molded body.

（３）前記熱可塑性樹脂層を形成する熱可塑性樹脂の融点または軟化温度が８０〜２２０℃であることを特徴とする（１）または（２）記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 (3) The melting point or softening temperature of the thermoplastic resin forming the thermoplastic resin layer is 80 to 220 ° C. The metal or wood-based material according to (1) or (2) and the thermoplastic resin Integrated molded body.

（４）前記熱可塑性樹脂層を形成する熱可塑性樹脂がポリアミドであることを特徴とする（１）〜（３）のいずれかに記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 (4) The integrally formed article of the metal or wood-based material and the thermoplastic resin according to any one of (1) to (3), wherein the thermoplastic resin forming the thermoplastic resin layer is polyamide.

（５）前記熱可塑性樹脂層を形成する熱可塑性樹脂が、ポリアミド６、ポリアミド６６、ポリアミド６１０、ポリアミド１２から選択される２種類以上を共重合したポリアミドであることを特徴とする（１）〜（４）のいずれかに記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 (5) The thermoplastic resin forming the thermoplastic resin layer is a polyamide obtained by copolymerization of two or more selected from polyamide 6, polyamide 66, polyamide 610, and polyamide 12. (1) to (4) An integrally molded body of the metal or wood-based material according to any one of the above and a thermoplastic resin.

（６）前記熱可塑性樹脂成形体がポリアミド樹脂、スチレン系樹脂、ポリエステル樹脂からなることを特徴とする（１）〜（５）のいずれかに記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 (6) The thermoplastic resin molded body is made of a polyamide resin, a styrene resin, or a polyester resin, and the metal or wood material according to any one of (1) to (5) and the thermoplastic resin are integrated. Molded body.

（７）金属材料の成形体がアルミニウム合金またはマグネシウム合金であることを特徴とする（１）〜（６）のいずれかに記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 (7) The molded body of a metal material is an aluminum alloy or a magnesium alloy, The metal or wood-based material and thermoplastic resin integrated molded body according to any one of (1) to (6).

（８）金属または木質系材料と熱可塑性樹脂とからなる一体成形体を製造する方法において、（ａ）熱可塑性樹脂層となる熱可塑性樹脂を溶媒に溶かし被膜用熱可塑性樹脂溶液を得る工程、（ｂ）被膜用熱可塑性樹脂溶液を金属または木質系材料成形体表面にコーティングする工程、（ｃ）コーティングした被膜用熱可塑性樹脂溶液を乾燥し溶媒を飛ばして金属または木質系材料成形体の表面に１０〜１００μｍの熱可塑性樹脂層を形成した金属または木質系材料成形体を得る工程、（ｄ）金属または木質系材料からなる成形体の表面に形成した該熱可塑性樹脂層と熱可塑性樹脂成形体を熱溶着させ一体化する工程を有することを特徴とする金属または木質系材料と熱可塑性樹脂の一体成形体を製造する方法。 (8) In the method for producing an integrally molded body comprising a metal or wood-based material and a thermoplastic resin, (a) a step of dissolving a thermoplastic resin to be a thermoplastic resin layer in a solvent to obtain a thermoplastic resin solution for coating; (B) coating the thermoplastic resin solution for coating on the surface of the metal or wood-based material molding, (c) drying the coated thermoplastic resin solution for coating and removing the solvent to remove the surface of the molded metal or wood-based material A step of obtaining a metal or wood-based material molded body on which a 10 to 100 μm thermoplastic resin layer is formed, and (d) the thermoplastic resin layer and the thermoplastic resin molding formed on the surface of the metal or wood-based molded body A method for producing an integrally molded body of a metal or wood-based material and a thermoplastic resin, comprising the step of heat-welding and integrating the bodies.

（９）金属または木質系材料と熱可塑性樹脂とからなる一体成形体を製造する方法において、（ａ）熱可塑性樹脂層となる熱可塑性樹脂を溶媒に溶かし被膜用熱可塑性樹脂溶液を得る工程、（ｂ）被膜用熱可塑性樹脂溶液を金属または木質系材料成形体表面にコーティングする工程、（ｃ）コーティングした被膜用熱可塑性樹脂溶液を乾燥し溶媒を飛ばして金属または木質系材料成形体の表面に１０〜１００μｍの熱可塑性樹脂層を形成した金属または木質系材料成形体を得る工程、（ｅ）該熱可塑性樹脂層を形成した金属または木質系材料成形体を射出成形用の金型にインサートし熱可塑性樹脂を射出して金属または木質系材料成形体と熱可塑性樹脂を一体成形体とする工程を有することを特徴とする金属または木質系材料と熱可塑性樹脂の一体成形体を製造する方法。 (9) In a method for producing an integrally molded body comprising a metal or wood-based material and a thermoplastic resin, (a) a step of dissolving a thermoplastic resin to be a thermoplastic resin layer in a solvent to obtain a thermoplastic resin solution for coating; (B) coating the thermoplastic resin solution for coating on the surface of the metal or wood-based material molding, (c) drying the coated thermoplastic resin solution for coating and removing the solvent to remove the surface of the molded metal or wood-based material (E) Inserting the metal or wood-based material molded body formed with the thermoplastic resin layer into a mold for injection molding A metal or wood-based material and a thermoplastic resin, comprising the step of injecting a thermoplastic resin into a metal or wood-based material molded body and a thermoplastic resin as an integral molded body A method for producing the integrally molded body.

（１０）（ｃ）コーティングした被膜用熱可塑性樹脂溶液を乾燥し溶媒を飛ばして金属または木質系材料成形体の表面に１０〜５０μｍの熱可塑性樹脂層を形成した金属または木質系材料成形体を得る工程を有することを特徴とする請求項８または９に記載の金属または木質系材料と熱可塑性樹脂の一体成形体を製造する方法。 (10) (c) A metal or wood-based material molded body in which the coated thermoplastic resin solution for coating is dried and the solvent is removed to form a 10-50 μm thermoplastic resin layer on the surface of the metal or wood-based material molded body. A method for producing an integrally molded body of a metal or wood-based material and a thermoplastic resin according to claim 8 or 9, characterized by comprising a step of obtaining.

本発明の金属または木質系材料成形体と熱可塑性樹脂製成形体の一体化成形体は、金属等の持つ特性と熱可塑性樹脂が持つ特性を併せ持つ成形体を得ることが可能であり、高い強度が必要とされる成形体でも部分的に計量化を計ることができ、さらに金属では困難な複雑な形状を熱可塑性樹脂で成形一体化することで対応することができる。また、本発明の金属または木質系材料成形体と熱可塑性樹脂製成形体を一体化する方法は、金属または木質系材料と熱可塑性樹脂を簡単かつ強固に密着することができる。 The integrated molded body of the metal or wood-based material molded body and the thermoplastic resin molded body of the present invention can provide a molded body having both the characteristics of a metal and the characteristics of a thermoplastic resin, and has high strength. The required molded body can be partially weighed, and moreover, it is possible to cope by molding and integrating a complicated shape that is difficult with metal with a thermoplastic resin. Moreover, the method of integrating the metal or wood-based material molded body and the thermoplastic resin molded body of the present invention can easily and firmly adhere the metal or wood-based material and the thermoplastic resin.

本発明の金属と熱可塑性樹脂の一体成形体において、金属の材質としては特に限定するものはなくアルミニウム合金、マグネシウム合金、亜鉛合金、鉄、炭素鋼などがある。中でも計量で加工性が良いことからアルミニウム合金、マグネシウム合金が好ましい金属として挙げられる。 In the integrally molded article of the metal and thermoplastic resin of the present invention, the material of the metal is not particularly limited, and examples thereof include an aluminum alloy, a magnesium alloy, a zinc alloy, iron, and carbon steel. Among them, aluminum alloys and magnesium alloys are preferred metals because of their good workability in measurement.

本発明の木質系材料と熱可塑性樹脂の一体成形体において、木質系材料の材質としては特に限定するものはなく一般的に建築物や家具などに使用されている木質系材料を使用することができ、具体的にはサクラ、スギ、マツ、モミ、ヒノキ、ヒバ、ツガ等の針葉樹や、クリ、ブナ、ナラ、ケヤキ、カシ、ラワン、チーク等の広葉樹、挽板や小角材を繊維方向を互いに平行にして集成接着した集成材、切削した単板を繊維方向を互いに平行にして積層接着した単板積層材、木材を薄くはいだ板や単板の繊維方向を互いに直行させ奇数板を対称構成になるように重ね接着剤で張り合わせた合板、木材の小片であるチップ、フレーク、ウェファー、ストランド等を接着剤にて成形熱圧したパーティクルボード、木材繊維を主原料として板状に成形したファイバーボードなどが挙げられ、これらを任意の形状に切削加工等を施した成形体を木質系材料からなる成形体として表す。さらにこれら木質系材料からなる成形体には、表面に天然の化粧板を張ったものやプリント加工、塗装などの特殊加工化粧を施した物や、難燃処理を施したものも同様に用いることができる。 In the integrally formed article of the wood material of the present invention and the thermoplastic resin, the material of the wood material is not particularly limited, and it is possible to use a wood material that is generally used for buildings and furniture. Specifically, coniferous trees such as cherry, cedar, pine, fir, cypress, hiba, and moth, broadleaf trees such as chestnut, beech, oak, zelkova, oak, lawan, and teak, and sawed wood and small timber Laminated wood that is laminated and bonded in parallel to each other, Single-plate laminated material in which cut veneers are laminated and bonded with the fiber directions parallel to each other, odd-numbered plates are symmetrical by making the fiber direction of thinly laminated wood or veneer perpendicular to each other Plywood laminated with laminated adhesive to form a composition, chips, chips, flakes, wafers, strands, etc. that are small pieces of wood molded with adhesive, heat-pressed particle board, molded into a plate shape using wood fiber as the main raw material Such as fiber boards and the like, representing these were subjected to cutting or the like into a desired shape molded body as a molded body made of wood-based material. In addition, molded products made of these wood-based materials should be used in the same way as those with a natural decorative board on the surface, specially processed makeup such as print processing and painting, and those with flame retardant treatment. Can do.

また、金属または木質系材料成形体の表面に被膜する熱可塑性樹脂としては、水やアルコール類の溶媒に可溶な熱可塑性樹脂、さらには融点または軟化温度が８０〜２２０℃である熱可塑性樹脂であれば特に制限するものはなく、好ましくは溶媒１００重量％に対し熱可塑性樹脂が５重量％以上可溶できるもの、さらに好ましくは溶媒１００重量％に対し熱可塑性樹脂が１０重量％以上可溶できるものがある。具体的には、ポリアミド樹脂、スチレン系樹脂、ポリエステル系樹脂、オレフィン系樹脂などがあり、中でもポリアミド６、ポリアミド６６、ポリアミド６１０、ポリアミド１２から２種以上選択して共重合する共重合ポリアミドが好ましく、ジカルボン酸とジアミンとの塩およびω−アミノカルボン酸あるいはラクタムの共重合によって得られる。 In addition, the thermoplastic resin that coats the surface of the metal or wood-based material molded body includes thermoplastic resins that are soluble in water and alcohol solvents, and further thermoplastic resins that have a melting point or softening temperature of 80 to 220 ° C. If there is no particular limitation, the thermoplastic resin is preferably soluble in 5% by weight or more with respect to 100% by weight of the solvent, more preferably the thermoplastic resin is soluble in 10% by weight or more with respect to 100% by weight of the solvent. There is something you can do. Specifically, there are polyamide resin, styrene resin, polyester resin, olefin resin, etc. Among them, a copolymer polyamide selected from two or more of polyamide 6, polyamide 66, polyamide 610, and polyamide 12 is preferable. It can be obtained by copolymerization of a salt of dicarboxylic acid and diamine and ω-aminocarboxylic acid or lactam.

金属または木質系材料からなる成形体を被膜する熱可塑性樹脂の溶媒としては特に限定するものはないが、ポリアミド樹脂が可溶な溶媒としてはメタノール、エタノール、プロパノールその他の低級脂肪族アルコール、またこれらのアルコールに水、トリクレン、クロロホルム、四塩化炭素、ベンジルアルコール、フェノール、ギ酸、酢酸を少量加えた混合溶媒も挙げられる。 There are no particular limitations on the solvent for the thermoplastic resin that coats the molded body made of a metal or wood-based material, but examples of solvents in which the polyamide resin is soluble include methanol, ethanol, propanol, and other lower aliphatic alcohols. And a mixed solvent obtained by adding a small amount of water, tricrene, chloroform, carbon tetrachloride, benzyl alcohol, phenol, formic acid, and acetic acid to the alcohol.

本発明の熱可塑性樹脂成形体としては、熱融着可能であれば特に制限するものはなく一般的な熱可塑性樹脂を使用することができる。例えば、ポリエチレン、ポリプロピレン、ポリスチレン、エチレン／α−オレフィン共重合体などのオレフィン系樹脂、シンジオタクチックポリスチレン、ＡＳ樹脂（アクリロ二トリル／スチレン共重合体）、ＡＢＳ樹脂（アクリロニトリル／スチレン／ブタジエン）、ＨＩＰＳ（ハイインパクトポリスチレン）などのスチレン系樹脂、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレン２,６−ナフタレート、ポリブチレン２，６−ナフタレート、ポリエチレンイソフタレート、ポリブチレンイソフタレートなどの非液晶ポリエステル系樹脂およびこれらの共重合体、液晶ポリエステル、ポリフェニレンスルフィドに代表されるポリアリーレンスルフィド、ポリ塩化ビニル（ＰＶＣ）、塩化ビニリデン（ＰＶＤＣ）、ポリビニルアルコール（ＥＶＯＨ）、ポリカーボネート、変性ポリフェニレンエーテル、ポリスルホン、ポリエーテルスルホン、ポリエーテルイミド、ポリアミドイミド、ポリエーテルケトン、ポリエーテルエーテルケトン、ポリアセタール（ホモポリマー、コポリマー）など、ポリアミド６、ポリアミド６６、ポリアミド１２、ポリアミド６１０、ポリアミド６／６６コポリマー、ポリアミド６／１２コポリマー等のポリアミド系樹脂などが挙げられ、中でも金属成形体の表面に被膜する熱可塑性樹脂との熱融着が良好な熱可塑性樹脂としては、ポリアミド６、ポリアミド６６、ＡＢＳ樹脂、ＨＩ−ＰＳ樹脂、ポリブチレンテレフタレート樹脂、ポリエチレンテレフタレート樹脂、ポリカーボネート樹脂が挙げられる。 The thermoplastic resin molded article of the present invention is not particularly limited as long as it can be heat-sealed, and a general thermoplastic resin can be used. For example, polyethylene, polypropylene, polystyrene, olefin resins such as ethylene / α-olefin copolymer, syndiotactic polystyrene, AS resin (acrylonitrile / styrene copolymer), ABS resin (acrylonitrile / styrene / butadiene), Styrenic resins such as HIPS (high impact polystyrene), non-liquid crystalline polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene 2,6-naphthalate, polybutylene 2,6-naphthalate, polyethylene isophthalate, polybutylene isophthalate, and the like Copolymer, liquid crystal polyester, polyarylene sulfide represented by polyphenylene sulfide, polyvinyl chloride (PVC), vinylidene chloride (PVDC), Polyvinyl alcohol (EVOH), polycarbonate, modified polyphenylene ether, polysulfone, polyethersulfone, polyetherimide, polyamideimide, polyetherketone, polyetheretherketone, polyacetal (homopolymer, copolymer), polyamide 6, polyamide 66, Examples thereof include polyamide resins such as polyamide 12, polyamide 610, polyamide 6/66 copolymer, polyamide 6/12 copolymer, etc. Among them, a thermoplastic resin having good thermal fusion with a thermoplastic resin coated on the surface of a metal molded body Examples thereof include polyamide 6, polyamide 66, ABS resin, HI-PS resin, polybutylene terephthalate resin, polyethylene terephthalate resin, and polycarbonate resin.

本発明の金属または木質系材料成形体と熱可塑性樹脂成形体を一体化する方法としては、熱可塑性樹脂層を形成する熱可塑性樹脂を溶媒に溶かし、被膜用熱可塑性樹脂溶液を金属または木質系材料成形体の表面にコーティングした後乾燥させ、熱可塑性樹脂層と熱可塑性樹脂成形体を熱溶着で密着させるものであり、被膜用熱可塑性樹脂を溶媒に溶解する方法としては特に制限するものはなく、加熱撹拌した溶媒中に被膜用熱可塑性樹脂を添加して溶解させることが一般的な方法として挙げられる。 As a method for integrating the metal or wood-based material molded body and the thermoplastic resin molded body of the present invention, the thermoplastic resin for forming the thermoplastic resin layer is dissolved in a solvent, and the thermoplastic resin solution for coating is converted to a metal or wood-based material. The material molded body is coated and then dried, and the thermoplastic resin layer and the thermoplastic resin molded body are brought into close contact with each other by heat welding, and the method for dissolving the thermoplastic resin for coating in a solvent is particularly limited. As a general method, a thermoplastic resin for coating is added and dissolved in a solvent that is heated and stirred.

また、溶媒に被膜用熱可塑性樹脂を添加する量としては５重量％以上が好ましく、５重量％未満では金属または木質系材料成形体の表面に十分に熱可塑性樹脂層を形成させることができず、膜厚が薄くなる。金属または木質系材料成形体の表面に形成する被膜用熱可塑性樹脂層の膜厚は１０〜１００μｍであることが必要であり、さらには１０〜５０μｍが好ましく、１０μｍより薄いと熱可塑性樹脂成形体との熱溶着が悪く十分密着力が得られない。また、１００μｍより厚くなると膜厚を厚くするための工程が煩雑になるばかりか被膜用熱可塑性樹脂の強度が低い場合、熱可塑性樹脂層部分で破壊し見かけ上金属または木質系材料成形体と熱可塑性樹脂成形体の密着力が低いものとなる。 Further, the amount of the thermoplastic resin for coating added to the solvent is preferably 5% by weight or more, and if it is less than 5% by weight, a sufficient thermoplastic resin layer cannot be formed on the surface of the metal or wood-based material molded body. The film thickness becomes thinner. The film thickness of the thermoplastic resin layer for coating formed on the surface of the metal or wood-based material molded body must be 10 to 100 μm, more preferably 10 to 50 μm, and if it is thinner than 10 μm, the thermoplastic resin molded body Adhesive strength cannot be obtained sufficiently. Further, when the thickness is larger than 100 μm, not only the process for increasing the film thickness becomes complicated, but also when the thermoplastic resin for coating is low in strength, it breaks at the thermoplastic resin layer part and apparently becomes a metal or wood-based material molded body and heat The adhesive strength of the plastic resin molded product is low.

金属または木質系材料成形体に熱可塑性樹脂層を被膜する部分としては、熱可塑性樹脂成形体と一体化する部分のみに被膜を形成することも、金属成形体全体を被膜することも特に制限するものはなく、被膜した熱可塑性樹脂層と熱可塑性樹脂成形体が溶着して一体化することが重要である。 As a part to coat the thermoplastic resin layer on the metal or wood-based material molded body, it is particularly limited to form a film only on a part integrated with the thermoplastic resin molded body or to coat the entire metal molded body. There is nothing, and it is important that the coated thermoplastic resin layer and the thermoplastic resin molded body are welded and integrated.

金属または木質系材料成形体と熱可塑性樹脂成形体を熱溶着で一体化する方法としては、各々別々に作成した成形体を熱板溶着、超音波溶着、振動溶着、レーザー溶着等の方法で溶着させる方法が採用できる。また、金属または木質系材料成形体を射出成形機の金型キャビティ内に配置しインサート成形することで一体化することも可能である。 As a method of integrating the metal or wood-based material molded body and the thermoplastic resin molded body by thermal welding, the molded bodies created separately are welded by methods such as hot plate welding, ultrasonic welding, vibration welding, laser welding, etc. Can be adopted. It is also possible to integrate by molding a metal or wood-based material molded body in a mold cavity of an injection molding machine and insert molding.

本発明は金属または木質系材料成形体と熱可塑性樹脂成形体とが一体に成型されてなる成形体であり、その形状に自由度が大きく、かつその接着力が大きいため、携帯端末や電子機器の筐体、土木建築関係や車両用の継ぎ手つき補強部材などに好適である。 The present invention is a molded body formed by integrally molding a metal or wood-based material molded body and a thermoplastic resin molded body, and has a high degree of freedom in its shape and a large adhesive force. It is suitable for a casing, a civil engineering / architecture-related or a reinforcing member with a joint for vehicles.

以下、本発明の実施の形態を説明する。 Embodiments of the present invention will be described below.

［実施例］
金属成形体：金属成形体としてＡＳＴＭ１号ダンベルの半分の成形体１を、マグネシウム合金（ＡＺ９１）とアルミニウム合金（Ａ１０５０）で作成した。 [Example]
Metal molded body: A molded body 1 half of ASTM No. 1 dumbbell was formed as a metal molded body with a magnesium alloy (AZ91) and an aluminum alloy (A1050).

木質系材料成形体：木質系材料としてＡＳＴＭ１号ダンベルの半分の成形体１を、ヒノキと合板から切削加工を施し作成した。 Wood-based material molded body: As a wood-based material, a half-shaped molded body 1 of ASTM No. 1 dumbbell was prepared by cutting from cypress and plywood.

金属または木質系材料成形体被膜用熱可塑性樹脂：被膜用熱可塑性樹脂として”アミラン”ＣＭ８０００（融点１２８℃：東レ（株）製）と”アミラン”ＣＭ４０００（融点１４０℃：東レ（株）製）を使用した。 Thermoplastic resin for coating metal or wood-based material molding: “Amilan” CM8000 (melting point 128 ° C .: manufactured by Toray Industries, Inc.) and “Amilan” CM4000 (melting point 140 ° C .: manufactured by Toray Industries, Inc.) It was used.

溶媒：金属または木質系材料被膜成形体用熱可塑性樹脂を溶解する溶媒として、メタノール：水＝８０：２０ｗｔ％の混合溶媒を使用した。 Solvent: A mixed solvent of methanol: water = 80: 20 wt% was used as a solvent for dissolving the thermoplastic resin for metal or wood-based material film moldings.

金属または木質系材料成形体の被膜用熱可塑性樹脂溶液：メタノール／水の混合溶媒８０ｇを４５℃に温調し撹拌しながら被膜用熱可塑性樹脂２０ｇを徐々に添加し、完全溶解させて作成した。”アミラン”ＣＭ８０００を使用した溶液を溶液Ａとし、”アミラン”ＣＭ４０００を使用した溶液を溶液Ｂとした。 Thermoplastic resin solution for coating of metal or wood-based material molding: prepared by dissolving 80 g of methanol / water mixed solvent at 45 ° C. and gradually adding 20 g of thermoplastic resin for coating while completely stirring. . A solution using “Amilan” CM8000 was designated as Solution A, and a solution using “Amilan” CM4000 was designated as Solution B.

熱可塑性樹脂成形体：金属または木質系材料成形体と接合する熱可塑性樹脂として、”アミラン”ＣＭ１０１７（ポリアミド６：東レ（株）製）と”アミラン”ＣＭ１０１１Ｇ３０（ガラス繊維強化ポリアミド６：東レ（株）製）を使用した。この内”アミラン”ＣＭ１０１７はシリンダー温度２６０℃、金型温度８０℃で図４に示すＡＳＴＭ１号ダンベル５を成形し、図１に示す金属または木質系材料成形体１と同じ形状にするよう半分を切断し図４に示す熱可塑性樹脂成形体６を得た。 Thermoplastic resin molding: “Amilan” CM1017 (polyamide 6: manufactured by Toray Industries, Inc.) and “Amilan” CM1011G30 (glass fiber reinforced polyamide 6: Toray Industries, Inc.) as thermoplastic resins to be joined to metal or wood-based material moldings )). Among them, “Amilan” CM1017 is formed by molding ASTM No. 1 dumbbell 5 shown in FIG. 4 at a cylinder temperature of 260 ° C. and a mold temperature of 80 ° C., and halves so that it has the same shape as the metal or wood-based material molded body 1 shown in FIG. The thermoplastic resin molding 6 shown in FIG. 4 was obtained by cutting.

実施例１
マグネシウム合金でできた図１記載の金属成形体１の表面を一般のメタノールを使って洗浄し金属成形体表面に付着したゴミや油を拭き取った。その後、図２に示すように、金属成形体１をガラス容器内に入った溶液Ａ２内に熱可塑性樹脂成形体と一体化する部分として約５ｍｍを１分間浸漬させ取り出し８０℃×１００分乾燥させて金属成形体に付着した溶媒Ａのメタノール／水混合液を飛ばし、図３に示す様な金属成形体１の一部に”アミラン”ＣＭ８０００の被膜層３を形成させた金属成形体４を得た。この時”アミラン”ＣＭ８０００の被膜の厚さは２０μｍであった。 Example 1
The surface of the metal molded body 1 shown in FIG. 1 made of a magnesium alloy was washed with general methanol to wipe off dust and oil adhering to the surface of the metal molded body. Thereafter, as shown in FIG. 2, the metal molded body 1 is immersed in a solution A2 contained in a glass container for about 5 mm as a portion to be integrated with the thermoplastic resin molded body for 1 minute, and is taken out and dried at 80 ° C. for 100 minutes. Then, the methanol / water mixed solution of the solvent A adhering to the metal molded body was blown off to obtain a metal molded body 4 in which a coating layer 3 of “Amilan” CM8000 was formed on a part of the metal molded body 1 as shown in FIG. It was. At this time, the film thickness of “Amilan” CM8000 was 20 μm.

次に金属成形体４と熱可塑性樹脂成形体を一体化する方法について説明する。熱可塑性樹脂成形体としては”アミラン”ＣＭ１０１７を射出成形して得たＡＳＴＭ１号ダンベル５を半分に切断して図４に示すような熱可塑性樹脂成形体６を得た。得られた熱可塑性樹脂成形体６の接合面７を加熱ヒーターで約１８０℃に暖め均一に加熱された直後に、図４に示すように金属成形体４の”アミラン”ＣＭ８０００で被膜層を形成させた部分３に圧着し金属成形体と熱可塑性樹脂成形体の一体化成形体８を得た。 Next, a method for integrating the metal molded body 4 and the thermoplastic resin molded body will be described. As a thermoplastic resin molding, ASTM No. 1 dumbbell 5 obtained by injection molding “Amilan” CM1017 was cut in half to obtain a thermoplastic resin molding 6 as shown in FIG. Immediately after the joining surface 7 of the obtained thermoplastic resin molded body 6 is heated to about 180 ° C. with a heater and heated uniformly, a coating layer is formed with “Amilan” CM8000 of the metal molded body 4 as shown in FIG. A pressure-bonded portion 3 was obtained to obtain an integrated molded body 8 of a metal molded body and a thermoplastic resin molded body.

実施例２
アルミニウム合金でできた金属成形体１、溶液Ｂを使用した以外は実施例１と同じ条件で、金属成形体の表面に熱可塑性樹脂皮膜を形成させた成形体９を得る。金属成形体１の一部に”アミラン”ＣＭ４０００で被膜層１０を形成した膜厚は２０μｍであった。 Example 2
A molded body 9 in which a thermoplastic resin film is formed on the surface of the metal molded body is obtained under the same conditions as in Example 1 except that the metal molded body 1 made of an aluminum alloy and the solution B are used. The film thickness in which the coating layer 10 was formed on a part of the metal molded body 1 with “Amilan” CM4000 was 20 μm.

次に図５に示すように金属成形体９を東芝機械製ＩＳ５５射出成形機に搭載したＡＳＴＭ１号ダンベルを成形する金型１１のキャビティ１２内に配置し、シリンダー温度２６５℃、金型温度６０℃の条件で”アミラン”ＣＭ１０１１Ｇ３０を使用してインサート成形した。この時溶融状態の”アミラン”ＣＭ１０１１Ｇ３０はスプール１３を通ってキャビティ１２内に射出され金属成形体９の”アミラン”ＣＭ４０００を被膜した部分１０と一体化させて金型から取り出すことによって金属成形体と熱可塑性樹脂成形体の一体化成形体１４を得た。 Next, as shown in FIG. 5, the metal molded body 9 is placed in the cavity 12 of the mold 11 for molding ASTM No. 1 dumbbell mounted on an IS55 injection molding machine manufactured by Toshiba Machine, and the cylinder temperature is 265 ° C. and the mold temperature is 60 ° C. Insert molding was performed using “Amilan” CM1011G30 under the following conditions. At this time, the melted “Amilan” CM1011G30 is injected into the cavity 12 through the spool 13 and is integrated with the portion 10 coated with “Amilan” CM4000 of the metal molded body 9 and taken out from the mold. An integrated molded body 14 of a thermoplastic resin molded body was obtained.

比較例１、２
実施例１、２で使用したマグネシウム合金とアルミニウム合金のＡＳＴＭ１号ダンベルの半分の成形体を一般のメタノールを使って洗浄し金属成形体表面に付着したゴミや油を拭き取った金属成形体を、実施例２と同じ方法で金型キャビティ１２内に配置し、”アミラン”ＣＭ１０１１Ｇ３０を実施例２同様にインサート成形して金属成形体と熱可塑性樹脂成形体の一体成形体１４を得た。 Comparative Examples 1 and 2
The metal molded body in which the half of the ASTM No. 1 dumbbell made of magnesium alloy and aluminum alloy used in Examples 1 and 2 was washed with general methanol to wipe off dust and oil adhering to the surface of the metal molded body. It was placed in the mold cavity 12 in the same manner as in Example 2, and “Amilan” CM1011G30 was insert-molded in the same manner as in Example 2 to obtain an integrally molded body 14 of a metal molded body and a thermoplastic resin molded body.

金属成形体と熱可塑性樹脂成形体の密着力測定
実施例１、２および比較例１、２で得られた金属成形体と熱可塑性樹脂成形体の一体成形体を図６に示す様なＡＳＴＭＤ６３８に準拠した方法で引張り金属成形体と熱可塑性樹脂成形体の密着力を測定した。密着力測定結果を表１に示す。 Measurement of Adhesive Strength between Metal Molded Body and Thermoplastic Resin Molded Body ASTM D638 as shown in FIG. 6 shows the integrally molded body of the metal molded body and the thermoplastic resin molded body obtained in Examples 1 and 2 and Comparative Examples 1 and 2. The adhesion between the tensile metal molded body and the thermoplastic resin molded body was measured by a method based on the above. Table 1 shows the results of measurement of adhesion.

実施例３
ヒノキでできた図１記載の木質系材料からなる成形体１の表面を水を使って洗浄し木質系材料からなる成形体表面に付着した切削屑や油を洗い流す。その後図２に示すように、木質系材料からなる成形体１をガラス容器内に入った溶液Ａ２内に熱可塑性樹脂成形体と一体化する部分として約５ｍｍを１分間浸漬させ取り出し８０℃×１００分乾燥させて木質系材料からなる成形体に付着した溶媒Ａのメタノール／水混合液を飛ばし、図３に示す様な木質系材料からなる成形体１の一部に”アミラン”ＣＭ８０００の被膜３を形成させた木質系材料からなる成形体４を得る。この時”アミラン”ＣＭ８０００の被膜の厚さは１５μｍであった。

Example 3
The surface of the molded body 1 made of cypress made of the wood-based material shown in FIG. 1 is washed with water to wash away cutting chips and oil adhering to the surface of the molded body made of the wood-based material. Then, as shown in FIG. 2, the molded body 1 made of a wood-based material is immersed in a solution A2 contained in a glass container for about 5 mm as a portion to be integrated with the thermoplastic resin molded body for 1 minute and taken out. The methanol / water mixed solution of solvent A adhering to the molded body made of wood material after being partially dried is blown off, and “Amilan” CM8000 coating 3 is applied to a part of the molded body 1 made of wood material as shown in FIG. A molded body 4 made of a wood-based material on which is formed is obtained. At this time, the film thickness of “Amilan” CM8000 was 15 μm.

次に木質系材料からなる成形体４と熱可塑性樹脂成形体を一体化する方法について説明する。熱可塑性樹脂成形体としては”アミラン”ＣＭ１０１７を射出成形して得たＡＳＴＭ１号ダンベル５を半分に切断して図４に示すような熱可塑性樹脂成形体６を得た。得られた熱可塑性樹脂成形体６の接合面７を加熱ヒーターで約１８０℃に暖め均一に加熱された直後に、図４に示すように木質系材料からなる成形体４の”アミラン”ＣＭ８０００で被膜層を形成させた部分３に圧着し木質系材料からなる成形体と熱可塑性樹脂成形体の一体化成形体８を得る。 Next, a method for integrating the molded body 4 made of a wood-based material and the thermoplastic resin molded body will be described. As a thermoplastic resin molding, ASTM No. 1 dumbbell 5 obtained by injection molding “Amilan” CM1017 was cut in half to obtain a thermoplastic resin molding 6 as shown in FIG. Immediately after the joint surface 7 of the obtained thermoplastic resin molded body 6 was heated to about 180 ° C. with a heater and heated uniformly, the “Amilan” CM8000 of the molded body 4 made of a wood material as shown in FIG. An integrated molded body 8 of a molded body made of a wood-based material and a thermoplastic resin molded body is obtained by pressure bonding to the portion 3 on which the coating layer is formed.

実施例４
合板でできた木質系材料からなる成形体１、溶液Ｂを使用した以外は実施例１と同じ条件で、金属成形体の表面に熱可塑性樹脂皮膜を形成させた成形体９を得た。木質系材料からなる成形体１の一部に”アミラン”ＣＭ４０００で被膜層１０を形成した膜厚は１５μｍであった。 Example 4
A molded body 9 in which a thermoplastic resin film was formed on the surface of the metal molded body was obtained under the same conditions as in Example 1 except that the molded body 1 made of a wood-based material made of plywood and the solution B were used. The film thickness of the coating layer 10 formed of “Amilan” CM4000 on a part of the molded body 1 made of a wood material was 15 μm.

次に図５に示すように木質系材料からなる成形体９を東芝機械製ＩＳ５５射出成形機に搭載したＡＳＴＭ１号ダンベルを成形する金型１１のキャビティ１２内に配置し、シリンダー温度２６５℃、金型温度６０℃の条件で”アミラン”ＣＭ１０１１Ｇ３０を使用してインサート成形した。この時溶融状態の”アミラン”ＣＭ１０１１Ｇ３０はスプール１３を通ってキャビティ１２内に射出され木質系材料からなる成形体９の”アミラン”ＣＭ４０００を被膜した部分１０と一体化させて金型から取り出すことによって木質系材料からなる成形体と熱可塑性樹脂成形体の一体化成形体１４を得た。 Next, as shown in FIG. 5, a molded body 9 made of a wood-based material is placed in a cavity 12 of a mold 11 for molding an ASTM No. 1 dumbbell mounted on an IS55 injection molding machine manufactured by Toshiba Machine. Insert molding was performed using “Amilan” CM1011G30 at a mold temperature of 60 ° C. At this time, the melted “Amilan” CM1011G30 is injected into the cavity 12 through the spool 13 and is integrated with the portion 10 coated with “Amilan” CM4000 of the molded body 9 made of a wood-based material. An integrated molded body 14 of a molded body made of a wood-based material and a thermoplastic resin molded body was obtained.

比較例３、４
実施例３、４で使用したヒノキと合板のＡＳＴＭ１号ダンベルの半分の成形体を水を使って洗浄し木質系材料からなる成形体表面に付着した切削屑や油を洗い流した木質系材料からなる成形体を、実施例２と同じ方法で金型キャビティ１２内に配置し、”アミラン”ＣＭ１０１１Ｇ３０を実施例２同様にインサート成形して木質系材料からなる成形体と熱可塑性樹脂成形体の一体成形体１４を得た。 Comparative Examples 3 and 4
Made of wood-based material in which the half of the ASTM No. 1 dumbbell made of cypress and plywood used in Examples 3 and 4 was washed with water and the cutting waste and oil adhering to the surface of the wood-based material were washed away. The molded body is placed in the mold cavity 12 in the same manner as in Example 2, and “Amilan” CM1011G30 is insert-molded in the same manner as in Example 2 to integrally mold the molded body made of a wood-based material and the thermoplastic resin molded body. Body 14 was obtained.

木質系材料からなる成形体と熱可塑性樹脂成形体の密着力測定
実施例３、４および比較例３、４で得られた木質系材料からなる成形体と熱可塑性樹脂成形体の一体成形体を、図６に示す様なＡＳＴＭＤ６３８に準拠した方法で引張り、木質系材料からなる成形体と熱可塑性樹脂成形体の密着力を測定した。密着力測定結果を表１に示す。

Measurement of Adhesive Strength between Molded Material Made of Wood Material and Thermoplastic Resin Molded Body An integrally molded body of the molded material composed of the wood material obtained in Examples 3 and 4 and Comparative Examples 3 and 4 and the thermoplastic resin molded body 6 was pulled by a method based on ASTM D638 as shown in FIG. 6, and the adhesion between the molded body made of a wood-based material and the thermoplastic resin molded body was measured. Table 1 shows the results of measurement of adhesion.

本発明の実施例で使用した金属または木質系材料成形体の斜視図。The perspective view of the metal or wood type material molding used in the Example of this invention. 本発明の実施例で使用した溶液に金属または木質系材料成形体をコーティングする様子を示した斜視図The perspective view which showed a mode that the metal or wood type material molded object was coated to the solution used in the Example of this invention. 本発明の実施例で使用した金属または木質系材料成形体に熱可塑性樹脂層を被膜した成形体の斜視図。The perspective view of the molded object which coat | covered the thermoplastic resin layer on the metal or wood type material molded object used in the Example of this invention. 本発明の実施例で使用した金属または木質系材料成形体と熱可塑性樹脂成形体を一体した様子を示した斜視図The perspective view which showed a mode that the metal or the wood type material molded object used in the Example of this invention and the thermoplastic resin molded object were integrated. 本発明の実施例で使用した金属または木質系材料成形体を射出成形でインサート成形する様子を示した斜視図The perspective view which showed a mode that insert molding of the metal or the wood type material molded object used in the Example of this invention by injection molding 本発明の実施例で使用した金属または木質系材料成形体と熱可塑性樹脂成形体の密着力を測定した様子を示した正面図。The front view which showed a mode that the adhesive force of the metal or wood type material molded object used in the Example of this invention and the thermoplastic resin molded object was measured.

符号の説明Explanation of symbols

１金属または木質系材料成形体
２被膜用熱可塑性樹脂を溶解させた溶液
３金属または木質系材料成形体表面の”アミラン”ＣＭ８０００被膜層を形成した部分
４金属または木質系材料成形体に”アミラン”ＣＭ８０００を被膜した成形体
５熱可塑性樹脂を射出成形して得たＡＳＴＭ１号ダンベル成形体
６ ”アミラン”ＣＭ１０１７からなるＡＳＴＭ１号ダンベル成形体５を半分に切断した熱可塑性樹脂成形体
７熱可塑性樹脂成形体６で金属または木質系材料成形体との接合面
８金属または木質系材料成形体と熱可塑性樹脂成形体を溶着した一体成形体
９金属または木質系材料成形体に”アミラン”ＣＭ４０００を被膜した成形体
１０金属または木質系材料成形体表面の”アミラン”ＣＭ４０００被膜層を形成した部分
１１ＡＳＴＭ１号ダンベル成形用金型
１２ＡＳＴＭ１号ダンベル成形用金型キャビティ
１３ＡＳＴＭ１号ダンベル成形用金型スプール
１４金属または木質系材料成形体をインサート成形で熱可塑性樹脂と溶着させた一体成形体
１５引張試験機チャック 1 Metal or wood-based material molded body 2 Solution in which a thermoplastic resin for coating is dissolved 3 Amilan on the surface of the metal or wood-based material molded body formed with a CM8000 coating layer 4 Metal or wood-based material molded body with “Amilan” "Molded product CM8000 coated 5 ASTM 1 dumbbell molded product 6 obtained by injection molding of thermoplastic resin" Amilan "ASTM 10 dumbbell molded product 5 made of CM1017 cut in half 7 thermoplastic resin molded product 7 thermoplastic resin Bonded surface of molded product 6 with metal or wood-based material molded body 8 Integral molded body with metal or wood-based material molded body and thermoplastic resin molded body welded 9 Coating “Amilan” CM4000 on metal or wood-based material molded body Molded body 10 Part 11 ASTM1 where “Amilan” CM4000 coating layer is formed on the surface of the molded body of metal or wood-based material Dumbbell mold 12 ASTM dumbbell mold cavity 13 ASTM dumbbell mold spool 14 metal or integrally molded body 15 tensile tester chuck woody material molded body is welded to the thermoplastic resin by insert molding

Claims

金属または木質系材料の成形体と熱可塑性樹脂成形体と熱可塑性樹脂層からなる成形体であって、該金属または木質系材料の成形体と該熱可塑性樹脂成形体とが厚さ１０〜１００μｍの該熱可塑性樹脂層によって溶着されてなることを特徴とする金属または木質系材料と熱可塑性樹脂の一体成形体。 A molded body comprising a molded body of a metal or wood-based material, a thermoplastic resin molded body, and a thermoplastic resin layer, wherein the molded body of the metal or wooden material and the thermoplastic resin molded body have a thickness of 10 to 100 μm A metal or wood-based material and a thermoplastic resin-integrated molded body, which are welded by the thermoplastic resin layer.

前記熱可塑性樹脂層を形成する熱可塑性樹脂が、溶媒１００重量％に対し５重量％以上可溶であることを特徴とする請求項１記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 2. The integrally molded article of metal or wood-based material and thermoplastic resin according to claim 1, wherein the thermoplastic resin forming the thermoplastic resin layer is soluble in 5 wt% or more with respect to 100 wt% of the solvent. .

前記熱可塑性樹脂層を形成する熱可塑性樹脂の融点または軟化温度が８０〜２２０℃であることを特徴とする請求項１または２記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 The metal or wood-based material and thermoplastic resin-integrated molded body according to claim 1 or 2, wherein the thermoplastic resin forming the thermoplastic resin layer has a melting point or softening temperature of 80 to 220 ° C.

前記熱可塑性樹脂層を形成する熱可塑性樹脂がポリアミドであることを特徴とする請求項１〜３のいずれかに記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 The integrally molded body of a metal or wood-based material and a thermoplastic resin according to any one of claims 1 to 3, wherein the thermoplastic resin forming the thermoplastic resin layer is polyamide.

前記熱可塑性樹脂層を形成する熱可塑性樹脂が、ポリアミド６、ポリアミド６６、ポリアミド６１０、ポリアミド１２から選択される２種類以上を共重合したポリアミドであることを特徴とする請求項１〜４のいずれかに記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 The thermoplastic resin forming the thermoplastic resin layer is a polyamide obtained by copolymerizing two or more kinds selected from polyamide 6, polyamide 66, polyamide 610, and polyamide 12. An integral molded body of the metal or wood-based material according to claim 1 and a thermoplastic resin.

前記熱可塑性樹脂成形体がポリアミド樹脂、スチレン系樹脂、ポリエステル樹脂からなることを特徴とする請求項１〜５のいずれかに記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 6. The integrally molded article of metal or wood-based material and thermoplastic resin according to any one of claims 1 to 5, wherein the thermoplastic resin molded article comprises a polyamide resin, a styrene resin, or a polyester resin.

金属材料の成形体がアルミニウム合金またはマグネシウム合金であることを特徴とする請求項１〜６のいずれかに記載の金属または木質系材料と熱可塑性樹脂の一体成形体。 The molded body of a metal material is an aluminum alloy or a magnesium alloy, and the integrally molded body of a metal or wood-based material and a thermoplastic resin according to any one of claims 1 to 6.

金属または木質系材料と熱可塑性樹脂とからなる一体成形体を製造する方法において、（ａ）熱可塑性樹脂層となる熱可塑性樹脂を溶媒に溶かし被膜用熱可塑性樹脂溶液を得る工程、（ｂ）被膜用熱可塑性樹脂溶液を金属または木質系材料成形体表面にコーティングする工程、（ｃ）コーティングした被膜用熱可塑性樹脂溶液を乾燥し溶媒を飛ばして金属または木質系材料成形体の表面に１０〜１００μｍの熱可塑性樹脂層を形成した金属または木質系材料成形体を得る工程、（ｄ）金属または木質系材料からなる成形体の表面に形成した該熱可塑性樹脂層と熱可塑性樹脂成形体を熱溶着させ一体化する工程を有することを特徴とする金属または木質系材料と熱可塑性樹脂の一体成形体を製造する方法。 In a method for producing an integrally molded body comprising a metal or wood-based material and a thermoplastic resin, (a) a step of dissolving a thermoplastic resin to be a thermoplastic resin layer in a solvent to obtain a thermoplastic resin solution for coating; (b) A step of coating the surface of the metal or wood-based material molded body with the thermoplastic resin solution for coating; (c) drying the coated thermoplastic resin solution for film and removing the solvent; A step of obtaining a metal or wood-based material molded body on which a 100 μm thermoplastic resin layer is formed, (d) heat the thermoplastic resin layer and the thermoplastic resin molded body formed on the surface of the metal or wood-based molded body. A method for producing an integrally molded body of a metal or wood-based material and a thermoplastic resin, comprising a step of welding and integrating.

金属または木質系材料と熱可塑性樹脂とからなる一体成形体を製造する方法において、（ａ）熱可塑性樹脂層となる熱可塑性樹脂を溶媒に溶かし被膜用熱可塑性樹脂溶液を得る工程、（ｂ）被膜用熱可塑性樹脂溶液を金属または木質系材料成形体表面にコーティングする工程、（ｃ）コーティングした被膜用熱可塑性樹脂溶液を乾燥し溶媒を飛ばして金属または木質系材料成形体の表面に１０〜１００μｍの熱可塑性樹脂層を形成した金属または木質系材料成形体を得る工程、（ｅ）該熱可塑性樹脂層を形成した金属または木質系材料成形体を射出成形用の金型にインサートし熱可塑性樹脂を射出して金属または木質系材料成形体と熱可塑性樹脂を一体成形体とする工程を有することを特徴とする金属または木質系材料と熱可塑性樹脂の一体成形体を製造する方法。 In a method for producing an integrally molded body comprising a metal or wood-based material and a thermoplastic resin, (a) a step of dissolving a thermoplastic resin to be a thermoplastic resin layer in a solvent to obtain a thermoplastic resin solution for coating; (b) A step of coating the surface of the metal or wood-based material molded body with the thermoplastic resin solution for coating; (c) drying the coated thermoplastic resin solution for film and removing the solvent; A step of obtaining a metal or wood-based material molded body on which a thermoplastic resin layer of 100 μm is formed, (e) a metal or wood-based material molded body on which the thermoplastic resin layer is formed is inserted into a mold for injection molding, and thermoplasticity Integrating a metal or wood-based material and a thermoplastic resin, comprising a step of injecting a resin to form a metal or wood-based material molded body and a thermoplastic resin as an integral molded body A method for producing the form.

（ｃ）コーティングした被膜用熱可塑性樹脂溶液を乾燥し溶媒を飛ばして金属または木質系材料成形体の表面に１０〜５０μｍの熱可塑性樹脂層を形成した金属または木質系材料成形体を得る工程を有することを特徴とする請求項８または９に記載の金属または木質系材料と熱可塑性樹脂の一体成形体を製造する方法。 (C) A step of drying the coated thermoplastic resin solution for coating and removing the solvent to obtain a metal or wood-based material molded body having a 10-50 μm thermoplastic resin layer formed on the surface of the metal or wood-based material molded body. A method for producing an integrally molded body of a metal or wood-based material and a thermoplastic resin according to claim 8 or 9.