【０００６】
【課題を解決するための手段】
［１］ それぞれが異なる融点を有する、溶融接合可能な材料を積層した複合材の、それぞれの材料の層同士を接合する方法において、低融点材料同士の面を重ね合わせ、接合部を低融点材料の融点以上に加熱し、接合部の低融点材料を排除または薄層化すると共に溶融接合し、次いで高融点材料の超音波接合を行う積層複合材の接合方法、
［２］ 低融点材料の層が厚い時または加熱圧縮によりその排除が困難な時、積層複合材の接合部の低融点材料をあらかじめ除去してから接合を行う上記［１］に記載の積層複合材の接合方法、
［３］ 超音波接合部の一部において低融点材料があらかじめ除去され、接合面の一部において直接高融点材料同士及び低融点材料同士を接触させ、まず高融点材料同士を超音波接合し、ついで超音波接合部を低融点材料の溶融温度以上に加熱圧縮して低融点材料を接合させることを特徴とする積層複合材の接合方法、
［４］ 高融点材料がアルミニウムまたはアルミニウム合金である材料（以下これら両者をアルミニウム材という。）であり、低融点材料が熱可塑性プラスチックの積層複合材である上記［１］〜［３］のいずれかに記載の積層複合材の接合方法、
［５］ 高融点材料のアルミニウム材に、低融点材料の熱可塑性プラスチックをラミネートまたは塗装した積層複合材である上記［１］〜［４］のいずれかに記載の積層複合材の接合方法、
［６］ 高融点材料としてのアルミニウム材の合計の厚さが、０．０３〜２．０ｍｍである上記［１］〜［５］のいずれかに記載の積層複合材の接合方法、
［７］ 低融点材料が、ポリエチレン、ポリプロピレン、エチレン−酢酸ビニル共重合体、ポリアミド、ポリエステルまたはエンジニアリングプラスチックいずれかである上記［１］〜［５］のいずれかに記載の積層複合材の接合方法、[0006]
[Means for solving the problem]
[1] A method for joining layers of a composite material in which melt-bondable materials having different melting points are laminated together, the method comprising overlapping the surfaces of the low-melting-point materials, heating the joint to a temperature equal to or higher than the melting point of the low-melting-point material, removing or thinning the low-melting-point material at the joint and melt-bonding the materials, and then ultrasonically joining the high-melting-point material.
[2] The joining method for laminated composite materials according to the above [1], in which when the layer of the low-melting point material is thick or when it is difficult to remove it by heating and compression, the low-melting point material at the joining portion of the laminated composite material is removed in advance before joining;
[3] A method for joining laminated composite materials, characterized in that the low-melting point material is previously removed from a portion of the ultrasonic joint, high-melting point materials and low-melting point materials are directly contacted at a portion of the joining surface, the high-melting point materials are first ultrasonically joined, and then the ultrasonic joint is heated and compressed to a temperature equal to or higher than the melting temperature of the low-melting point material to join the low-melting point material.
[4] The method for joining laminated composite materials according to any one of [1] to [3] above, wherein the high melting point material is aluminum or an aluminum alloy (hereinafter both of these are referred to as aluminum materials), and the low melting point material is a laminated composite material of a thermoplastic plastic;
[5] The method for joining a laminated composite material according to any one of [1] to [4] above, wherein the laminated composite material is an aluminum material having a high melting point and a thermoplastic plastic material having a low melting point laminated or painted thereon.
[6] The method for joining a laminated composite material according to any one of [1] to [5] above, wherein the total thickness of the aluminum material as the high-melting point material is 0.03 to 2.0 mm.
[7] The method for joining laminated composite materials according to any one of [1] to [5] above, wherein the low-melting-point material is any one of polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyamide, polyester, and engineering plastic.
【０００７】
［８］ 内面に熱可塑性プラスチックを積層したアルミニウム薄板製蓋材を接合した、内面に熱可塑性プラスチックが積層されたアルミニウム材の複合材料製容器であって、蓋材及び容器本体の熱可塑性プラスチック同士が融着され、またアルミニウム同士が超音波融着されている容器、
［９］ フランジを有し、内面に熱可塑性プラスチックを積層したアルミニウム材薄板製蓋材と、内面に熱可塑性プラスチックが積層されたアルミニウム材の複合材料容器本体とからなる容器であって、容器本体のフランジ部内面と蓋材内面の熱可塑性プラスチック面の接合部の一部の熱可塑性プラスチックをあらかじめまたは接合時に除き、それらを重ね合わせ、該接合部を熱可塑性プラスチックの融点以上に加熱、加圧圧縮し、熱可塑性プラスチック同士を融着すると共にアルミニウム材同士を超音波接合をする積層複合材製容器の製造方法、
［１０］ フランジを有し、内面に熱可塑性プラスチックを積層したアルミニウム材薄板製蓋材と、内面に熱可塑性プラスチックが積層されたアルミニウム材の複合材料容器本体とからなる容器であって、容器本体のフランジ部内面と蓋材内面の熱可塑性プラスチック面の接合部の一部の熱可塑性プラスチックをあらかじめ除いてアルミニウム面同士及び熱可塑性プラスチック同士が接触するように重ね合わせ、該接合部のアルミニウム材同士を超音波接合し、ついで熱可塑性プラスチックの融点以上に加熱、加圧圧縮し、熱可塑性プラスチック同士を融着する積層複合材製容器の製造方法、
［１１］ アルミニウム材の厚さが、０．０３〜２．０ｍｍである上記［９］または［１０］に記載の積層複合材製容器の製造方法、
［１２］ 熱可塑性プラスチックが、ポリエチレン、ポリプロピレン、エチレン−酢酸ビニル共重合体、ポリアミド、ポリエステルまたはエンジニアリングプラスチックのいずれかである上記［９］または［１０］に記載の積層複合材製容器の製造方法、
［１３］ それぞれが異なる融点を有する、溶融接合可能な材料を積層した複合材を、低融点材料同士の面を重ね合わせ、接合部を低融点材料の融点以上に加熱し、接合部の低融点材料を排除または薄層化すると共に溶融接合し、次いで高融点材料の超音波接合を行った積層複合材、
［１４］ 超音波接合部の一部において低融点材料をあらかじめ除去して、接合面の一部において直接高融点材料同士及び低融点材料同士を接触させ、まず高融点材料同士を超音波接合し、ついで超音波接合部を低融点材料の溶融温度以上に加熱圧縮して低融点材料を接合させた積層複合材、
［１５］ フランジを有し、内面に熱可塑性プラスチックを積層したアルミニウム材薄板製蓋材と、内面に熱可塑性プラスチックが積層されたアルミニウム材の複合材料容器本体とからなる容器であって、容器本体のフランジ部内面と蓋材内面の熱可塑性プラスチック面の接合部の一部の熱可塑性プラスチックをあらかじめ除いてアルミニウム面同士及び熱可塑性プラスチック同士が接触するように重ね合わせ、熱可塑性プラスチックの融点以上に加熱、加圧圧縮し、熱可塑性プラスチック同士が融着し、次いで該接合部のアルミニウム材同士を超音波接合した積層複合材製容器又はケース、及び
［１６］ フランジを有し、内面に熱可塑性プラスチックを積層したアルミニウム材薄板製蓋材と、内面に熱可塑性プラスチックが積層されたアルミニウム材の複合材料容器本体とからなる容器であって、容器本体のフランジ部内面と蓋材内面の熱可塑性プラスチック面の接合部の一部の熱可塑性プラスチックをあらかじめ除いてアルミニウム面同士及び熱可塑性プラスチック同士が接触するように重ね合わせ、該接合部のアルミニウム材同士を超音波接合し、ついで熱可塑性プラスチックの融点以上に加熱、加圧圧縮し、熱可塑性プラスチック同士が融着された積層複合材製容器又はケース、を開発することにより上記の目的を達成した。[0007]
[8] A container made of a composite material of an aluminum material with a thermoplastic plastic laminated on the inner surface, to which a thin aluminum plate lid material with a thermoplastic plastic laminated on the inner surface is joined, in which the thermoplastic plastics of the lid material and the container body are fused together and the aluminum is ultrasonically fused together;
[9] A method for manufacturing a laminated composite container, which is a container comprising a lid material made of a thin aluminum plate having a flange and a thermoplastic laminated on the inner surface thereof, and a composite container body made of aluminum material having a thermoplastic laminated on the inner surface thereof, in which a part of the thermoplastic plastic at the joint between the inner surface of the flange portion of the container body and the thermoplastic plastic surface on the inner surface of the lid material is removed beforehand or at the time of joining, and the two are superimposed, and the joint is heated to a temperature above the melting point of the thermoplastic plastic and compressed under pressure, thereby fusing the thermoplastic plastics together and ultrasonically joining the aluminum materials together;
[10] A method for manufacturing a laminated composite container, which comprises a lid material made of a thin aluminum plate having a flange and a thermoplastic laminated on the inner surface thereof, and a composite container body made of aluminum material having a thermoplastic laminated on the inner surface thereof, in which a part of the thermoplastic plastic at the joint between the inner surface of the flange portion of the container body and the thermoplastic plastic surface on the inner surface of the lid material is removed in advance, and the two are overlapped so that the aluminum surfaces and the thermoplastic plastic surfaces come into contact with each other, and the aluminum materials at the joint are ultrasonically bonded together, and then heated to a temperature above the melting point of the thermoplastic plastic and compressed under pressure to fuse the thermoplastic plastics together;
[11] The method for producing a laminated composite container according to the above [9] or [10], wherein the thickness of the aluminum material is 0.03 to 2.0 mm.
[12] The method for producing a laminated composite container according to the above [9] or [10], wherein the thermoplastic plastic is any one of polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyamide, polyester, and engineering plastic.
[13] A laminated composite material in which melt-bondable materials each having a different melting point are laminated, the surfaces of the low-melting-point materials are overlapped, the joint is heated to a temperature equal to or higher than the melting point of the low-melting-point material, the low-melting-point material at the joint is removed or thinned and melt-bonded, and then ultrasonically bonded to the high-melting-point material.
[14] A laminated composite material in which the low-melting point material is previously removed from a portion of the ultrasonically bonded portion, and high-melting point materials and low-melting point materials are directly contacted with each other at a portion of the bonding surface, and the high-melting point materials are first ultrasonically bonded together, and then the ultrasonically bonded portion is heated and compressed to a temperature equal to or higher than the melting temperature of the low-melting point material to bond the low-melting point material.
[15] A laminated composite container or case has been developed, which has a flange and is made of a thin aluminum plate lid material with a thermoplastic plastic laminated on the inner surface, and a composite container body made of aluminum material with a thermoplastic plastic laminated on the inner surface, in which a portion of the thermoplastic plastic at the joint between the inner surface of the flange portion of the container body and the inner surface of the thermoplastic plastic surface of the lid material is removed in advance, the two are overlapped so that the aluminum surfaces and the thermoplastic plastic surfaces come into contact, heated to a temperature above the melting point of the thermoplastic plastic and compressed under pressure to fuse the thermoplastic plastics together, and then the aluminum materials at the joint are ultrasonically bonded together; and [16] A laminated composite container or case has been developed, which has a flange and is made of a thin aluminum plate lid material with a thermoplastic plastic laminated on the inner surface, and a composite container body made of aluminum material with a thermoplastic plastic laminated on the inner surface, in which a portion of the thermoplastic plastic at the joint between the inner surface of the flange portion of the container body and the inner surface of the thermoplastic plastic surface of the lid material is removed in advance, the two are overlapped so that the aluminum surfaces and the thermoplastic plastic surfaces come into contact, ultrasonically bonded together the aluminum materials at the joint, and then the two are heated to a temperature above the melting point of the thermoplastic plastic and compressed under pressure to fuse the thermoplastic plastics together.
【０００８】
【発明の実施の形態】
本発明に使用する溶融接合可能な材料の中の高融点材料としては、低融点材料に比較して高い融点を有し、超音波接合が可能なものであれば、鋼やステンレススティールも含め原則として何でも利用できるが、好ましくは低融点を有する金属、例えばアルミニウム、アルミニウム系合金、銅、銅合金、マグネシウム、マグネシウム合金、錫、錫合金、亜鉛、亜鉛合金などがあり、また熱可塑性プラスチックも使用可能である。この場合の熱可塑性プラスチックとしては、低融点材料となる熱可塑性プラスチックに比して高融点の熱可塑性プラスチックである。この場合、低融点材料としてポリエチレン、ポリプロピレンなどを用いる場合にはポリエステル、ポリアミド、エンジニアリングプラスチックなどが挙げられる。[0008]
[Embodiments of the Invention]
The high-melting-point material among the melt-bondable materials used in the present invention can be any material, including steel and stainless steel, that has a higher melting point than the low-melting-point material and can be ultrasonically bonded. However, metals with low melting points, such as aluminum, aluminum alloys, copper, copper alloys, magnesium, magnesium alloys, tin, tin alloys, zinc, and zinc alloys, are preferred. Thermoplastics can also be used. In this case, the thermoplastic plastic has a higher melting point than the thermoplastic plastic used as the low-melting-point material. In this case, when polyethylene, polypropylene, or the like is used as the low-melting-point material, examples of suitable materials include polyester, polyamide, and engineering plastics.