JP7232387B2 - Adhesion method and laminated magnet - Google Patents

Adhesion method and laminated magnet Download PDF

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JP7232387B2
JP7232387B2 JP2018167751A JP2018167751A JP7232387B2 JP 7232387 B2 JP7232387 B2 JP 7232387B2 JP 2018167751 A JP2018167751 A JP 2018167751A JP 2018167751 A JP2018167751 A JP 2018167751A JP 7232387 B2 JP7232387 B2 JP 7232387B2
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adhesive composition
adhesive layer
thickness
bonded
adhesive
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JP2020041022A (en
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博人 井手野
好治 南
静香 山脇
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PROTERIAL, LTD.
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Description

本開示の実施形態は、接着方法及び積層磁石に関する。 Embodiments of the present disclosure relate to bonding methods and laminated magnets.

昨今、次世代の自動車として、電気自動車（ＥＶ：Ｅｌｅｃｔｒｉｃ Ｖｅｈｉｃｌｅ）の実用化が進んでいる。ＥＶ用モータには、Ｒ－Ｔ－Ｂ系焼結磁石（Ｒは希土類元素のうち少なくとも一種でありＮｄおよびＰｒの一方を必ず含む、Ｔは遷移金属元素のうち少なくとも一種でありＦｅを必ず含む）に代表される希土類系永久磁石などの磁石をケイ素鋼板などで形成されたロータの中に埋め込んだ、いわゆるＩＰＭモータ（Ｉｎｔｅｒｉｏｒ Ｐｅｒｍａｎｅｎｔ Ｍａｇｎｅｔ Ｍｏｔｏｒ）や、ＳｙｎＲＭ（Ｓｙｎｃｈｒｏｎｏｕｓ Ｒｅｌｕｃｔａｎｃｅ Ｍｏｔｏｒ）と呼ばれるブラシレスモータなどがある。また、Ｒ－Ｔ－Ｂ系焼結磁石は、ハードディスクドライブのボイスコイルモータ（ＶＣＭ）、産業機器用モータなどの各種モータや家電製品用モータなどにも使用されている。 In recent years, electric vehicles (EVs) have been put into practical use as next-generation automobiles. RTB system sintered magnets (R is at least one of rare earth elements and always contains one of Nd and Pr, T is at least one of transition metal elements and always contains Fe) are used in EV motors. ) in which a magnet such as a rare earth permanent magnet is embedded in a rotor formed of a silicon steel plate or the like, a so-called IPM motor (Interior Permanent Magnet Motor), a brushless motor called SynRM (Synchronous Reluctance Motor), etc. be. RTB sintered magnets are also used in voice coil motors (VCM) for hard disk drives, various motors such as motors for industrial equipment, and motors for home electric appliances.

磁石に交流磁界がかかると渦電流が発生して渦電流損失が起こる。従って、例えばＩＰＭに用いる磁石は、磁石に発生する渦電流を低減する必要がある。そのため、磁石を複数の磁石片に分割し、それらを互いに電気的に絶縁した状態で積層し、積層磁石として用いる方法が提案されている。 When an alternating magnetic field is applied to a magnet, eddy currents are generated and eddy current loss occurs. Therefore, magnets used for IPM, for example, need to reduce eddy currents generated in the magnets. Therefore, a method has been proposed in which a magnet is divided into a plurality of magnet pieces, which are laminated while being electrically insulated from each other, and used as a laminated magnet.

例えば、特許文献１には、磁石片と磁石片の間に薄膜でも優れた絶縁性を有する被膜を形成し、絶縁被膜の膜厚と、一体化磁石体の積層方向の全長に対する絶縁被膜の膜厚の総和の割合を、特定の値に設定する方法が記載されている。 For example, in Patent Document 1, a film having excellent insulation is formed between magnet pieces even if it is a thin film. A method for setting the percentage of the total thickness to a specific value is described.

国際公開第０１／９５４６０号WO 01/95460

ところで、ＩＰＭに用いる磁石は、ケイ素鋼板などで形成されたロータに設けられたスロットに挿入して組み込まれる場合が多いことから、高い寸法精度が必要とされる。しかしながら、これらの要求を満たす積層磁石を製造するためには、特許文献１に記載の方法では、例えば絶縁性被膜の厳密な膜厚管理が必要であり、膜厚ごとの寸法精度を高くすることが容易ではなかった。
本開示の様々な実施形態は、寸法精度の高い接着方法および積層磁石を提供する。 By the way, magnets used in IPMs are often assembled by being inserted into slots provided in a rotor made of a silicon steel plate or the like, so high dimensional accuracy is required. However, in order to manufacture a laminated magnet that satisfies these requirements, the method described in Patent Document 1 requires, for example, strict film thickness control of the insulating film, and it is necessary to improve the dimensional accuracy for each film thickness. was not easy.
Various embodiments of the present disclosure provide bonding methods and laminated magnets with high dimensional accuracy.

本開示の接着方法は、例示的な実施形態において、接着剤組成物を準備する工程と、第１の接着対象物上に前記接着剤組成物を塗布する工程と、前記接着剤組成物が塗布された前記第１の接着対象物上に第２の接着対象物を設けて接合し、接合体を形成する工程と、前記接合体の前記接着剤組成物を硬化させて接着層を形成するように加熱する工程と、を含み、前記接着剤組成物を準備する工程では、前記接着層の厚み（μｍ）をｙ、係数をａ、フィラーの粒径（Ｄ５０）（μｍ）をｂ、前記接着層に含まれる熱硬化性樹脂の厚み（μｍ）をｃ、フィラーと前記接着層に含まれる熱硬化性樹脂との質量混合比をｄとしたとき、下記（１）、（２）、（３）式を満たすように準備する。
１０≦ｙ≦５０ （１）
０．９５×ａ×ｂ＋ｃ≦ｙ≦１．０５×ａ×ｂ＋ｃ （２）
ａ＝１．９４×ｄ＋０．６８ （３）
ある実施形態において、前記フィラーの粒度分布は、前記フィラーの粒径（Ｄ５０）が前記フィラーの最大粒径の１／２以下である。
ある実施形態において、前記第１の接着対象物上に塗布する前記接着剤組成物の粘度は、２０Ｐａ・ｓ以上５００Ｐａ・ｓ以下である。
ある実施形態において、前記塗布する工程では、前記接着剤組成物を前記第１の接着対象物上に複数個所に塗布し、前記第１の接着対象物上に第２の接着対象物を設けて接合することで塗布された少なくとも１箇所が加圧されて広がった時の長半径又は短半径を基準としたとき、前記第１の接着対象物と前記第２の接着対象物との間で押し広がった時の前記接着剤組成物同士の重なりが、塗布した時の中心から長半径又は短半径の１／２以下となるように塗布する。
ある実施形態において、前記塗布する工程では、前記接着剤組成物を前記第１の接着対象物上に複数個所に塗布し、前記第１の接着対象物上に第２の接着対象物を設けて接合することで塗布された少なくとも１箇所が加圧されて広がった時の半径を基準としたとき、前記第１の接着対象物と前記第２の接着対象物との間で押し広がった時の前記接着剤組成物同士の重なりが、塗布した時の中心から半径の１／２以下となるように塗布する。
ある実施形態において、前記接着層の厚みの変位は０．０１ｍｍ以下である。
ある実施形態において、前記フィラーの最大粒径は、前記接着層の厚みから前記接着層に含まれる熱硬化性樹脂の厚みを差し引いた大きさ以下である。
ある実施形態において、前記第１の接着対象物と前記第２の接着対象物は磁石である。 In an exemplary embodiment, the bonding method of the present disclosure comprises the steps of: preparing an adhesive composition; applying the adhesive composition on a first object to be bonded; providing a second object to be bonded on the first object to be bonded and bonding them to form a bonded body; and curing the adhesive composition of the bonded body to form an adhesive layer. In the step of preparing the adhesive composition, the thickness (μm) of the adhesive layer is y, the coefficient is a, the particle diameter (D 50 ) (μm) of the filler is b, and the The following (1), (2), ( 3) Prepare to satisfy the formula.
10≤y≤50 (1)
0.95×a×b+c≦y≦1.05×a×b+c (2)
a = 1.94 x d + 0.68 (3)
In one embodiment, the particle size distribution of the filler is such that the particle size (D 50 ) of the filler is 1/2 or less of the maximum particle size of the filler.
In one embodiment, the viscosity of the adhesive composition applied onto the first object to be bonded is 20 Pa·s or more and 500 Pa·s or less.
In one embodiment, in the applying step, the adhesive composition is applied to a plurality of locations on the first object to be bonded, and a second object to be bonded is provided on the first object to be bonded. Pressing between the first object to be bonded and the second object to be bonded when the long radius or the short radius is used as a reference when at least one place applied by bonding is pressurized and spread The adhesive composition is applied so that the overlap between the adhesive compositions when spread is 1/2 or less of the major radius or the minor radius from the center of the application.
In one embodiment, in the applying step, the adhesive composition is applied to a plurality of locations on the first object to be bonded, and a second object to be bonded is provided on the first object to be bonded. Based on the radius when at least one place applied by bonding is pressurized and spread, when it is pushed and spread between the first bonding object and the second bonding object The adhesive composition is applied so that the overlapping of the adhesive compositions is 1/2 or less of the radius from the center when applied.
In one embodiment, the thickness variation of the adhesive layer is 0.01 mm or less.
In one embodiment, the maximum particle size of the filler is equal to or less than the thickness of the adhesive layer minus the thickness of the thermosetting resin contained in the adhesive layer.
In one embodiment, the first adhesion object and the second adhesion object are magnets.

本開示の積層磁石は、他の例示的な実施形態において、第１の磁石と、前記第１の磁石上に設けられる接着層と、前記接着層上に設けられる第２の磁石と、を有し、前記接着層は、前記接着層の厚み（μｍ）をｙ、係数をａ、フィラーの粒径（Ｄ５０）（μｍ）をｂ、前記接着層に含まれる熱硬化性樹脂の厚み（μｍ）をｃ、フィラーと前記接着層に含まれる熱硬化性樹脂との質量混合比をｄとしたとき、下記（１）、（２）、（３）式を満たす。
１０≦ｙ≦５０ （１）
０．９５×ａ×ｂ＋ｃ≦ｙ≦１．０５×ａ×ｂ＋ｃ （２）
ａ＝１．９４×ｄ＋０．６８ （３）
ある実施形態において、前記フィラーの粒度分布は、前記フィラーの粒径（Ｄ５０）が前記フィラーの最大粒径の１／２以下である。
ある実施形態において、前記接着層の厚みの変位は０．０１ｍｍ以下である。
ある実施形態において、前記フィラーの最大粒径は、前記接着層の厚みから前記接着層に含まれる熱硬化性樹脂の厚みを差し引いた大きさ以下である。 A laminated magnet of the present disclosure, in another exemplary embodiment, includes a first magnet, an adhesive layer provided on the first magnet, and a second magnet provided on the adhesive layer. In the adhesive layer, y is the thickness (μm) of the adhesive layer, a is the coefficient, b is the particle size (D 50 ) (μm) of the filler, and b is the thickness (μm) of the thermosetting resin contained in the adhesive layer. ) is c, and the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer is d, the following equations (1), (2), and (3) are satisfied.
10≤y≤50 (1)
0.95×a×b+c≦y≦1.05×a×b+c (2)
a = 1.94 x d + 0.68 (3)
In one embodiment, the particle size distribution of the filler is such that the particle size (D 50 ) of the filler is 1/2 or less of the maximum particle size of the filler.
In one embodiment, the thickness variation of the adhesive layer is 0.01 mm or less.
In one embodiment, the maximum particle size of the filler is equal to or less than the thickness of the adhesive layer minus the thickness of the thermosetting resin contained in the adhesive layer.

本開示によれば、寸法精度の高い接着方法および積層磁石を提供することができる。 According to the present disclosure, it is possible to provide a bonding method and a laminated magnet with high dimensional accuracy.

第１の塗布方法に関する図であり、（ａ）は接着剤組成物を塗布した状態を示す上面図であり、（ｂ）は第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。FIG. 2 is a diagram related to a first application method, (a) is a top view showing a state in which an adhesive composition is applied, and (b) is a first adhesion when a second adhesion target is provided and joined. FIG. 4 is a top view showing the state of the object and the adhesive composition; 第２の塗布方法に関する図であり、（ａ）は接着剤組成物を塗布した状態を示す上面図であり、（ｂ）は（ａ）で塗布された接着剤組成物の１箇所が加圧されて広がった時の状態を示す上面図であり、（ｃ）は（ａ）で塗布された１箇所が、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。FIG. 4 is a diagram relating to a second coating method, (a) is a top view showing a state in which the adhesive composition is applied, and (b) is a pressure applied at one location of the adhesive composition applied in (a). FIG. 4C is a top view showing a state when the adhesive is applied and spread, and FIG. FIG. 3 is a top view showing the state of the agent composition; 第３の塗布方法に関する図であり、（ａ）は接着剤組成物を塗布した状態を示す上面図であり、（ｂ）は第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。FIG. 3 is a diagram relating to a third application method, (a) is a top view showing a state in which the adhesive composition is applied, and (b) is a first adhesion when a second adhesion target is provided and joined. FIG. 4 is a top view showing the state of the object and the adhesive composition; 第４の塗布方法に関する図であり、（ａ）は接着剤組成物を塗布した状態を示す上面図であり、（ｂ）は第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。FIG. 4 is a diagram relating to a fourth application method, (a) is a top view showing a state in which the adhesive composition is applied, and (b) is a first adhesion when a second adhesion target is provided and joined. FIG. 4 is a top view showing the state of the object and the adhesive composition; 第５の塗布方法に関する図であり、（ａ）は接着剤組成物を塗布した状態を示す上面図であり、（ｂ）は第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。FIG. 10 is a diagram related to a fifth application method, (a) is a top view showing a state in which the adhesive composition is applied, and (b) is a first adhesion when a second adhesion target is provided and joined. FIG. 4 is a top view showing the state of the object and the adhesive composition; 第６の塗布方法に関する図であり、（ａ）は接着剤組成物を塗布した状態を示す上面図であり、（ｂ）は第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。FIG. 10 is a diagram related to a sixth application method, (a) is a top view showing a state in which the adhesive composition is applied, and (b) is a first adhesion when a second adhesion target is provided and joined. FIG. 4 is a top view showing the state of the object and the adhesive composition; 第６の塗布方法にかかる他の塗布方法に関する図であり、（ａ）は接着剤組成物を塗布した状態を示す上面図であり、（ｂ）は第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図であり、（ｃ）は（ａ）で塗布された１箇所が、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。FIG. 10 is a view related to another coating method according to the sixth coating method, (a) is a top view showing a state in which the adhesive composition is applied, and (b) is a second bonding object provided and joined. FIG. 4C is a top view showing the state of the first object to be bonded and the adhesive composition at the time, and (c) is a state where one portion coated in (a) is provided and bonded to the second object to be bonded. FIG. 4 is a top view showing the state of the first object to be bonded and the adhesive composition; 第７の塗布方法にかかる他の塗布方法に関する図であり、（ａ）は接着剤組成物を塗布した状態を示す上面図であり、（ｂ）は第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。FIG. 10 is a diagram related to another coating method according to the seventh coating method, (a) is a top view showing a state in which the adhesive composition is applied, and (b) is a second bonding object provided and bonded. FIG. 4 is a top view showing the state of the first object to be bonded and the adhesive composition at the time of bonding; 第１の冶具の実施形態に関する断面図であり、（ａ）は冶具を用いて接合体を固定した状態の断面図であり、（ｂ）は保持部材の断面図である。FIG. 4A is a cross-sectional view of the first jig according to the embodiment, FIG. 7A is a cross-sectional view of a state in which the joined body is fixed using the jig, and FIG. 7B is a cross-sectional view of the holding member; 第１の冶具の実施形態に関する断面図であり、（ａ）は第１の押し込み部材の断面図であり、（ｂ）は第２の押し込み部材の断面図である。FIG. 4A is a cross-sectional view of the first jig embodiment, where (a) is a cross-sectional view of the first pushing member and (b) is a cross-sectional view of the second pushing member. 第２の冶具の実施形態に関する断面図であり、（ａ）は冶具を用いて接合体を固定した状態の断面図であり、（ｂ）は保持部材の断面図である。FIG. 4A is a cross-sectional view of a second embodiment of a jig, where (a) is a cross-sectional view of a state in which a joined body is fixed using the jig, and (b) is a cross-sectional view of a holding member; 第２の冶具の実施形態に関する断面図であり、（ａ）は第１の押し込み部材の断面図であり、（ｂ）は第２の押し込み部材の断面図である。FIG. 4A is a cross-sectional view of a second jig embodiment, where (a) is a cross-sectional view of the first pushing member and (b) is a cross-sectional view of the second pushing member; 実施例１に関する、接着層厚みに対するフィラーの粒径(Ｄ５０)と、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比の関係を示すグラフである。4 is a graph showing the relationship between the particle diameter (D 50 ) of filler with respect to the adhesive layer thickness and the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer, relating to Example 1. FIG. 実施例１に関する、フィラーの粒径と質量混合比の関係を示すグラフである。4 is a graph showing the relationship between filler particle size and mass mixing ratio in Example 1. FIG. 実施例２に関する積層磁石の斜視図であり、（ａ）は接着剤組成物を塗布した状態を示す斜視図であり、（ｂ）は加熱硬化後の積層磁石の斜視図である。FIG. 3 is a perspective view of a laminated magnet relating to Example 2, where (a) is a perspective view showing a state in which an adhesive composition is applied, and (b) is a perspective view of the laminated magnet after heat curing. 実施例２に関する各サンプルの接着層厚みの変位を示すグラフである。10 is a graph showing the variation in adhesive layer thickness of each sample in Example 2. FIG.

本発明者は検討の結果、接着層厚みは、フィラーの粒径(Ｄ５０)と、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比との間の一次関数の相関関係により決まることを知見した。また、更なる検討の結果、目的とする接着層厚みを得る際には、一次関数の相関関係を考慮した上で、フィラーの粒径(Ｄ５０)と、接着層に含まれる熱硬化性樹脂の厚みと、フィラーと接着層に含まれる熱硬化性樹脂との質量混合比を管理することにより、寸法精度の高い接着が可能となることが分かった。 As a result of investigation by the present inventors, the thickness of the adhesive layer is determined by the linear function correlation between the particle diameter ( D50 ) of the filler and the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer. I found out. Further, as a result of further studies, when obtaining the desired thickness of the adhesive layer, after considering the correlation of the linear function, the particle size (D 50 ) of the filler and the thermosetting resin contained in the adhesive layer and the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer enables adhesion with high dimensional accuracy.

工程１：接着剤組成物を準備する工程
接着剤組成物を準備する工程では、熱硬化性樹脂とフィラーを準備する。熱硬化性樹脂にフィラーを添加することで、フィラーが第１の接着対象物と第２の接着対象物との間においてスペーサとして機能するため、接着層の絶縁性を高められる。 Step 1: Step of Preparing Adhesive Composition In the step of preparing the adhesive composition, a thermosetting resin and a filler are prepared. By adding a filler to the thermosetting resin, the filler functions as a spacer between the first bonding object and the second bonding object, so that the insulation of the adhesive layer can be enhanced.

熱硬化性樹脂の材質は、絶縁性を有し加熱することで硬化するものであればよく、例えばエポキシ樹脂などを用いることができる。また、フィラーを添加した際に粘度が上がるため、フィラーを入れる前の粘度が１００Ｐａ・ｓ以下のものを用いる。 The material of the thermosetting resin may be any material as long as it has insulating properties and can be cured by heating. For example, an epoxy resin can be used. Further, since the viscosity increases when the filler is added, the viscosity before adding the filler is 100 Pa·s or less.

フィラーの材質は、絶縁性、耐熱性を有し、熱硬化性樹脂中の成分と反応しないものであればよく、例えばアルミナやシリカガラスなどを用いることができる。 Any material can be used for the filler as long as it has insulating properties and heat resistance and does not react with components in the thermosetting resin. For example, alumina, silica glass, or the like can be used.

また、接着剤組成物を準備する工程では、加熱硬化後に形成される接着層の厚みの精度を高めるため、目標とする接着層厚みに対して、下記（１）～（３）を満たすように熱硬化性樹脂とフィラーを準備する。後述する実施例１に示すように、接着層厚みは、フィラーの粒径(Ｄ５０)と、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比との間の一次関数の相関関係により決まる。一次関数の相関関係を考慮した上で、フィラーの粒径(Ｄ５０)と、接着層に含まれる熱硬化性樹脂の厚みと、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比とが下記（１）～（３）を満たすように熱硬化性樹脂とフィラーを準備することにより、寸法精度の高い接着が可能となる。
接着層の厚み（μｍ）をｙ、係数をａ、フィラーの粒径（Ｄ５０）（μｍ）をｂ、接着層に含まれる熱硬化性樹脂の厚み（μｍ）をｃ、フィラーと、接着層に含まれる熱硬化性樹脂との質量混合比をｄとしたとき、（１）、（２）、（３）式を満たす。
１０≦ｙ≦５０ （１）
０．９５×ａ×ｂ＋ｃ≦ｙ≦１．０５×ａ×ｂ＋ｃ （２）
ａ＝１．９４×ｄ＋０．６８ （３） In addition, in the step of preparing the adhesive composition, in order to increase the accuracy of the thickness of the adhesive layer formed after heat curing, the following (1) to (3) are satisfied with respect to the target adhesive layer thickness. Prepare thermosetting resin and filler. As shown in Example 1 described later, the thickness of the adhesive layer is determined by the linear function correlation between the particle diameter (D 50 ) of the filler and the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer. Determined. After considering the correlation of the linear function, the particle size (D 50 ) of the filler, the thickness of the thermosetting resin contained in the adhesive layer, and the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer By preparing a thermosetting resin and a filler so that the following (1) to (3) are satisfied, adhesion with high dimensional accuracy becomes possible.
y is the thickness (μm) of the adhesive layer, a is the coefficient, b is the particle size (D 50 ) (μm) of the filler, c is the thickness (μm) of the thermosetting resin contained in the adhesive layer, the filler and the adhesive layer When the mass mixing ratio with the thermosetting resin contained in is d, the formulas (1), (2), and (3) are satisfied.
10≤y≤50 (1)
0.95×a×b+c≦y≦1.05×a×b+c (2)
a = 1.94 x d + 0.68 (3)

接着層の厚みｙは、（１）式に示すように１０μｍ以上５０μｍ以下の間で厚みを設定することが望ましい。１０μｍ未満の厚みであると絶縁性能が低下する可能性があり、５０μｍより厚くなると、寸法精度が低下する可能性があるからである。接着組成物を準備する工程においては、任意の狙い厚みを設定すればよい。なお、設定した狙い厚み通りになっているかを確認するために硬化後の接着層の厚みを測定する場合は、断面を切断研磨して断面画像を撮り、画像解析ツールを使用して断面画像データから接着層の色（すなわち加熱硬化後の熱硬化性樹脂の色とフィラーの色）を識別し、接着層の面積から平均厚みを算出して求める。 The thickness y of the adhesive layer is desirably set between 10 μm and 50 μm as shown in formula (1). This is because if the thickness is less than 10 μm, the insulation performance may deteriorate, and if the thickness exceeds 50 μm, the dimensional accuracy may deteriorate. Any target thickness may be set in the step of preparing the adhesive composition. In addition, when measuring the thickness of the adhesive layer after curing in order to check whether it is the set target thickness, cut and polish the cross section, take a cross-sectional image, and use the image analysis tool to analyze the cross-sectional image data. The color of the adhesive layer (that is, the color of the thermosetting resin and the color of the filler after heat curing) is identified from the above, and the average thickness is calculated from the area of the adhesive layer.

フィラーの粒径（Ｄ５０）ｂは、フィラーの最大粒径の半分程度となるものを用いることが望ましい。また、フィラーの最大粒径は、目標とする接着層の厚みから熱硬化性樹脂の厚みを差し引いた値となるものを用いることが望ましい。フィラーの最大粒径が目標とする接着層の厚みよりも大きい値であると、寸法精度が低下する可能性があり、また接着性も低下する可能性があるからである。 The particle size (D 50 )b of the filler is preferably about half the maximum particle size of the filler. Moreover, it is desirable to use a filler whose maximum particle size is a value obtained by subtracting the thickness of the thermosetting resin from the target thickness of the adhesive layer. This is because if the maximum particle diameter of the filler is larger than the target thickness of the adhesive layer, the dimensional accuracy may decrease, and the adhesiveness may also decrease.

また、フィラーの粒径（Ｄ５０）は、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比と相関関係があるため、（１）式に加え、（２）、（３）式を満たすように準備する必要がある。なお、（３）式の質量混合比の値はアルミナを想定した場合の式であるため、アルミナ以外の材質を用いる場合はアルミナを用いた場合との差分を考慮した上で混合する必要があり、アルミナ以外の材質の質量混合比をｄ´、アルミナ質量をｅ、アルミナ比重をｆ、アルミナ以外の材質の比重をｆ´、接着層に含まれる熱硬化性樹脂の質量をｇとしたとき、（４）式を満たすように準備するとよい。
ｄ´＝（ｅ×ｆ´/ｆ）/ｇ （４） In addition, since the particle diameter (D 50 ) of the filler has a correlation with the mass mixing ratio of the thermosetting resin contained in the filler and the adhesive layer, in addition to the formula (1), the formulas (2) and (3) should be prepared to meet. In addition, since the value of the mass mixing ratio in formula (3) is a formula when alumina is assumed, when using a material other than alumina, it is necessary to mix after considering the difference from the case where alumina is used. , where d is the mass mixing ratio of materials other than alumina, e is the mass of alumina, f is the specific gravity of alumina, f' is the specific gravity of materials other than alumina, and g is the mass of the thermosetting resin contained in the adhesive layer, (4) should be prepared so as to satisfy the formula.
d'=(e×f'/f)/g (4)

また、フィラーの粒径（Ｄ５０）は、加熱硬化した状態の接着層に含まれているフィラーの粒径（Ｄ５０）であるが、加熱によりフィラーの粒径（Ｄ５０）が大きく変化することはないため、接着剤組成物を準備する工程においては、硬化前のフィラーの粒径（Ｄ５０）、すなわち粉末状の状態のフィラーの粒径（Ｄ５０）を適用してもよい。粉末状の状態のフィラーの粒径（Ｄ５０）を測定する場合は、フランホーファ法（レーザー回折）により測定して求める。また、加熱硬化した状態の接着層に含まれているフィラーの粒径（Ｄ５０）を測定する場合は、加熱硬化後の断面を切断研磨して断面画像を撮り、画像解析ツールを使用して断面画像データのフィラーの色を識別し、それぞれのフィラーの大きさを測定して算出する。 In addition, the particle size (D 50 ) of the filler is the particle size (D 50 ) of the filler contained in the heat-cured adhesive layer, but the particle size (D 50 ) of the filler changes greatly due to heating. Therefore, in the step of preparing the adhesive composition, the particle size (D 50 ) of the filler before curing, ie, the particle size (D 50 ) of the filler in powder form may be applied. When measuring the particle size (D 50 ) of the powdery filler, it is determined by the Fraunhofer method (laser diffraction). In addition, when measuring the particle diameter (D 50 ) of the filler contained in the heat-cured adhesive layer, the cross-section after heat-curing is cut and polished, a cross-sectional image is taken, and an image analysis tool is used. The color of the filler in the cross-sectional image data is identified, and the size of each filler is measured and calculated.

熱硬化性樹脂の厚みｃは、加熱硬化した状態の接着層に含まれている熱硬化性樹脂の厚みである。接着組成物を準備する工程においては、使用する熱硬化性樹脂の組成などから硬化後の厚みを求めることにより熱硬化性樹脂の厚みを設定すればよい。熱硬化樹脂が設定した厚みどおりになっているかを確認するためには、加熱硬化後の断面を切断研磨して断面画像を撮り、画像解析ツールを使用して断面画像データから熱硬化性樹脂の色を識別し（フィラーは除く）、熱硬化性樹脂の面積から平均厚みを算出する。 The thickness c of the thermosetting resin is the thickness of the thermosetting resin contained in the heat-cured adhesive layer. In the step of preparing the adhesive composition, the thickness of the thermosetting resin may be set by determining the thickness after curing from the composition of the thermosetting resin to be used. In order to check whether the thermosetting resin has the set thickness, cut and polish the cross section after heat curing, take a cross-sectional image, and use an image analysis tool to determine the thickness of the thermosetting resin from the cross-sectional image data. Identify the color (excluding filler) and calculate the average thickness from the area of the thermosetting resin.

フィラーと接着層に含まれる熱硬化性樹脂との質量混合比ｄは、後述する実施例１で得られた知見、すなわちフィラーの粒径(Ｄ５０)と、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比との間の一次関数の相関関係を考慮して設定する。加熱硬化後のフィラーと接着層に含まれる熱硬化性樹脂との質量混合比を求める場合は、断面を切断研磨して断面画像を撮り、画像解析ツールを使用して断面画像データから熱硬化性樹脂とフィラーの色を識別し、それぞれの面積を測定し、質量を考慮した上で算出する。 The mass mixing ratio d between the filler and the thermosetting resin contained in the adhesive layer is determined by the knowledge obtained in Example 1 described later, that is, the particle diameter (D 50 ) of the filler and the thermosetting resin contained in the filler and the adhesive layer. It is set in consideration of the linear function correlation between the mass mixing ratio of the curable resin. When calculating the mass mixing ratio of the thermosetting resin contained in the adhesive layer and the filler after heat curing, cut and polish the cross section, take a cross-sectional image, and use an image analysis tool to convert the cross-sectional image data into the thermosetting resin. Determine the color of the resin and filler, measure the area of each, and calculate after considering the mass.

工程２：第１の接着対象物上に接着剤組成物を塗布する工程
第１の接着対象物上に接着剤組成物を塗布する工程では、工程１で準備した接着剤組成物を第１の接着対象物上に、例えばディスペンサーやスキージ等を用いて塗布する工程である。第１の接着対象物は、例えば磁石などがあげられるがこれに限られない。 Step 2: Step of applying the adhesive composition onto the first object to be adhered In the step of applying the adhesive composition onto the first object to be adhered, the adhesive composition prepared in Step 1 is applied to the first object. This is a step of applying the adhesive onto the object to be adhered using, for example, a dispenser or a squeegee. Examples of the first object to be adhered include, but are not limited to, a magnet.

接着剤組成物の粘度は、フィラーと、接着層に含まれる熱硬化性樹脂の質量混合比の値により変化する。フィラーと、接着層に含まれる熱硬化性樹脂の質量混合比の値が大きくなるほど粘度が高くなり、値が小さくなるほど粘度が小さくなる。粘度が高くなると、フィラーの密度が高くなるため接着層の厚みが安定し、寸法精度が高くなる。粘度が低くなると接着層の厚みが不安定になる。 The viscosity of the adhesive composition varies depending on the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer. The larger the value of the mass mixing ratio between the filler and the thermosetting resin contained in the adhesive layer, the higher the viscosity, and the smaller the value, the smaller the viscosity. As the viscosity increases, the density of the filler increases, which stabilizes the thickness of the adhesive layer and increases the dimensional accuracy. When the viscosity is low, the thickness of the adhesive layer becomes unstable.

しかし、接着剤組成物の粘度が高すぎてしまうと接着面のフィラーの専有面積が大きくなってしまうため、接着強度が低下してしまう可能性がある。また、ディスペンサーで塗布する場合、粘度が高すぎてしまうと詰まりが生じてしまうため、吐出量が不安定になりやすくなり、寸法精度が低下する可能性がある。そのため、２０Ｐａ・ｓ以上～５００Ｐａ・ｓ以下となるような粘度であることが望ましい。よって、フィラーと、接着層に含まれる熱硬化性樹脂の質量混合比の値は、粘度が２０Ｐａ・ｓ以上５００Ｐａ・ｓ以下の範囲における一番大きな値に設定することが好ましい。より接着層の厚みが安定し、寸法精度を高くすることができる。 However, if the viscosity of the adhesive composition is too high, the area occupied by the filler on the adhesive surface becomes large, which may reduce the adhesive strength. In addition, when applying with a dispenser, if the viscosity is too high, clogging will occur, so the discharge amount tends to be unstable, and there is a possibility that the dimensional accuracy will decrease. Therefore, it is desirable that the viscosity be 20 Pa·s or more and 500 Pa·s or less. Therefore, it is preferable to set the value of the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer to the largest value in the viscosity range of 20 Pa·s or more and 500 Pa·s or less. The thickness of the adhesive layer is more stable, and the dimensional accuracy can be improved.

接着剤組成物の塗布方法としては、第１の接着対象物の全体に接着剤組成物を塗布する方法と、単数箇所や複数箇所に塗布する方法があげられる。いずれの方法で塗布しても良いが、例えば、第１の接着対象物の全体に塗布する場合には、第２の接着対象物を設けて接合体を形成する際に接着剤組成物が接着面からはみ出さないように塗布するとよい。接着剤がはみ出してしまうと、接着層を形成した後に除去加工を行う必要が出てくるためである。また、除去加工に伴い研磨粉が接着層の隙間に入り込み、絶縁不良を発生させる可能性があるからである。単数箇所や複数箇所に塗布する具体的な塗布方法については、図１乃至図８を用いて説明する。 Examples of the method of applying the adhesive composition include a method of applying the adhesive composition to the entire first object to be adhered, and a method of applying the adhesive composition to a single portion or a plurality of portions. Although any method may be used for application, for example, when the adhesive composition is applied to the entire first object to be adhered, the adhesive composition adheres when the second object to be adhered is provided to form a bonded body. It should be applied so that it does not protrude from the surface. This is because if the adhesive protrudes, it will be necessary to remove it after forming the adhesive layer. In addition, there is a possibility that polishing powder may enter the gaps between the adhesive layers during the removal process, causing poor insulation. A specific coating method for coating a single portion or a plurality of portions will be described with reference to FIGS. 1 to 8. FIG.

（第１の塗布方法）
本塗布方法は、接着面が正方形の場合で、接着剤組成物を単数箇所に塗布する方法である。図１（ａ）は第１の接着対象物の接着面が正方形で、接着剤組成物を単数箇所塗布した状態を示す上面図であり、図１（ｂ）は図１（ａ）のように塗布した後、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。なお、図１（ｂ）は、第２の接着対象物を透過した図である。 (First coating method)
This application method is a method in which the adhesive composition is applied to a single portion when the adhesive surface is square. FIG. 1(a) is a top view showing a state in which the adhesion surface of the first object to be adhered is square, and the adhesive composition is applied to a single point, and FIG. 1(b) is as shown in FIG. 1(a). FIG. 4 is a top view showing the state of the first object to be bonded and the adhesive composition when the second object to be bonded is provided and bonded after the application. In addition, FIG.1(b) is the figure which penetrate|transmitted the 2nd adhesion|attachment target object.

図１（ａ）に示すように、例えば、接着剤組成物１を第１の接着対象物２ａの２つの対角線Ｔ１の交点（中心）Ｋ１上に接着剤組成物１を点状に塗布する。また、接着剤組成物１を、接着剤組成物１が塗布された第１の接着対象物２ａ上に第２の接着対象物（不図示）を設けて加圧したとき、図１（ｂ）に示すように接着面Ｍ１からはみ出さずに概略円状に押し広がるように塗布する。 As shown in FIG. 1(a), for example, the adhesive composition 1 is applied in dots on the intersection (center) K1 of two diagonal lines T1 of the first object 2a. Further, when the adhesive composition 1 is applied to the first object to be bonded 2a to which the adhesive composition 1 is applied and a second object to be bonded (not shown) is provided and pressurized, FIG. As shown in , the adhesive is applied so as to spread out in a substantially circular shape without protruding from the adhesive surface M1.

本塗布方法のように塗布することで、全体に塗布する方法よりも容易に接着剤組成物の厚みの均一性を確保しながらはみ出さずに設けることができる。そして、接着層を形成した際の接着層の寸法精度を高くすることが可能となる。 By applying the adhesive composition according to the present application method, it is possible to provide the adhesive composition more easily than the method of applying the adhesive composition over the entire surface while ensuring the uniformity of the thickness of the adhesive composition. Then, it becomes possible to improve the dimensional accuracy of the adhesive layer when the adhesive layer is formed.

（第２の塗布方法）
本塗布方法は、接着剤組成物を複数箇所に塗布する点で第１の塗布方法とは異なる。なお、第１の本塗布方法と同様の構成であるものについては同じ符号を付している。図２（ａ）は第１の接着対象物の接着面が正方形で、接着剤組成物を２箇所塗布した状態を示す上面図であり、図２（ｂ）は図２（ａ）で塗布された接着剤組成物の少なくとも１箇所（図２（ｂ）では２箇所）が加圧されて広がった時の状態を示す上面図である。また、図２（ｃ）は、図２（ａ）で塗布された１箇所が、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。なお、図２（ｂ）及び（ｃ）は、第２の接着対象物を透過した図である。 (Second coating method)
This application method differs from the first application method in that the adhesive composition is applied to a plurality of locations. In addition, the same code|symbol is attached|subjected about the thing which is the same structure as the 1st main coating method. FIG. 2(a) is a top view showing a state in which the adhesion surface of the first object to be adhered is square and the adhesive composition is applied to two locations, and FIG. FIG. 2B is a top view showing a state when at least one location (two locations in FIG. 2B) of the adhesive composition is pressed and spread. In addition, FIG. 2(c) shows the state of the first adhesion object and the adhesive composition when the one applied in FIG. 2(a) is provided with the second adhesion object and bonded. It is a top view. 2(b) and 2(c) are views through the second bonding object.

図２（ａ）に示すように、例えば、接着剤組成物１を、第１の接着対象物２ａの接着面Ｍ１における、一方に対向する一対の辺（図中左右の辺）の中心線（図中Ｄ１方向の中心線）Ｘ１に線対称となるように所定の間隔をあけ、かつ他方に対向する一対の辺（図中上下の辺）の中心線（図中Ｄ２方向の中心線）Ｘ２に線対称となるように中心線Ｘ２に交差して線状（帯状）に２箇所塗布する。 As shown in FIG. 2( a ), for example, the adhesive composition 1 is applied to the center line (left and right sides in the figure) of a pair of sides (right and left sides in the figure) facing each other on the bonding surface M1 of the first bonding object 2 a. The center line (the center line in the D1 direction in the figure) X2 of a pair of sides (the upper and lower sides in the figure) facing the other at a predetermined interval so as to be line symmetrical with X1 (the center line in the D2 direction in the figure) X2 It is applied linearly (strip-like) at two points across the center line X2 so as to be symmetrical to each other.

また、接着剤組成物１を第１の接着対象物２ａ上に複数個所に塗布し、第１の接着対象物２ａ上に第２の接着対象物（不図示）を設けて接合することで、図２（ｂ）に示すように接着面Ｍ１からはみ出さないように概略楕円状に押し広がる。その時の接着剤組成物同士の重なりは、塗布された少なくとも１箇所が加圧されて広がった時の長半径又は短半径（図２（ｃ）では短半径Ｒ１）を基準とし、塗布した時の中心Ｋ２から長半径又は短半径の１／２以下（図２（ｂ）に示す短半径Ｒ１の１／２以下）となるように塗布する。なお、塗布した時の中心Ｋ２は、本塗布方法の場合は長方形状であるため接着剤組成物１の対角線Ｔ２の交点を中心Ｋ２としているが、その他多角形状の場合も同様に対角線の交点を中心とすることができる。また、多角形状以外の形状、例えば楕円形状等の場合は、長軸と短軸の交点を中心とする。 Further, by applying the adhesive composition 1 to a plurality of locations on the first object to be bonded 2a, and providing a second object to be bonded (not shown) on the first object to be bonded 2a and bonding, As shown in FIG. 2(b), it spreads out in a substantially elliptical shape so as not to protrude from the bonding surface M1. At that time, the overlap between the adhesive compositions is based on the major radius or minor radius (minor radius R1 in FIG. 2(c)) when at least one applied area is pressurized and spread. It is applied so that it is less than 1/2 of the major axis or the minor axis (1/2 or less of the minor axis R1 shown in FIG. 2(b)) from the center K2. Note that the center K2 at the time of application is a rectangular shape in the case of this coating method, so the center K2 is the intersection of the diagonal lines T2 of the adhesive composition 1, but in the case of other polygonal shapes, the intersection of the diagonal lines is also the center K2. can be centered. In the case of a shape other than a polygonal shape, such as an elliptical shape, the center is the intersection of the major axis and the minor axis.

接着剤組成物１同士が重なる場合、重なった部分が局所的に厚くなってしまうため、あらかじめ図２（ｃ）に示すように図２（ａ）で塗布された１箇所が加圧されて広がった時の短半径Ｒ１を測定しておき、塗布した時の中心Ｋ２から短半径Ｒ１の１／２以下で重なる位置を把握してから塗布するとよい。これにより、局所的に厚くなることを抑制できる。 When the adhesive composition 1 overlaps with each other, the overlapped portion becomes thick locally. Therefore, as shown in FIG. It is preferable to measure the minor radius R1 when applied, and to grasp the position where the minor radius R1 overlaps from the center K2 when applied by 1/2 or less of the minor radius R1 before applying. As a result, local thickening can be suppressed.

本塗布方法のように塗布することで、単数箇所に塗布する場合よりも接着剤組成物１が設けられる面積を広くすることが可能となる。また、接着剤組成物の厚みの均一性を確保することが可能となり、接着層を形成した際の接着層の寸法精度を高くすることができる。 By applying like this application method, it becomes possible to widen the area where the adhesive composition 1 is provided, as compared with the case where the adhesive composition 1 is applied to a single location. In addition, it becomes possible to ensure the uniformity of the thickness of the adhesive composition, and it is possible to improve the dimensional accuracy of the adhesive layer when the adhesive layer is formed.

（第３の塗布方法）
本塗布方法は、接着面が長方形である点で第１の塗布方法とは異なる。なお、第１の塗布方法と同様の構成であるものについては同じ符号を付している。図３（ａ）は第１の接着対象物の接着面が長方形で、接着剤組成物を単数箇所塗布した状態を示す上面図であり、図３（ｂ）は図３（ａ）のように塗布した後、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。なお、図３（ｂ）は、第２の接着対象物を透過した図である。 (Third application method)
This application method differs from the first application method in that the adhesive surface is rectangular. In addition, the same code|symbol is attached|subjected about the thing with the same structure as the 1st coating method. FIG. 3(a) is a top view showing a state in which the bonding surface of the first object to be bonded is rectangular, and the adhesive composition is applied to a single point, and FIG. 3(b) is as shown in FIG. 3(a). FIG. 4 is a top view showing the state of the first object to be bonded and the adhesive composition when the second object to be bonded is provided and bonded after the application. Note that FIG. 3B is a transparent view of the second object to be bonded.

図３（ａ）に示すように、例えば、接着剤組成物１を第１の接着対象物２ｂの２つの対角線Ｔ３の交点Ｋ３上に接着剤組成物１を点状に塗布する。また、接着剤組成物１を、接着剤組成物１が塗布された第１の接着対象物２ｂ上に第２の接着対象物（不図示）を設けて、加圧したとき、図３（ｂ）に示すように接着面Ｍ２からはみ出さずに概略円状に押し広がるように塗布する。 As shown in FIG. 3(a), for example, the adhesive composition 1 is applied in dots on the intersection point K3 of two diagonal lines T3 of the first object 2b. Further, when the adhesive composition 1 is applied to the first object to be bonded 2b to which the adhesive composition 1 is applied and a second object to be bonded (not shown) is provided and pressurized, FIG. ), the adhesive is applied so as to spread out in a substantially circular shape without protruding from the adhesive surface M2.

本塗布方法のように塗布することで、全体に塗布する方法よりも容易に接着剤組成物の厚みの均一性を確保しながらはみ出さずに設けることができる。そして、接着層を形成した際の接着層の寸法精度を高くすることが可能となる。 By applying the adhesive composition according to the present application method, it is possible to provide the adhesive composition more easily than the method of applying the adhesive composition over the entire surface while ensuring the uniformity of the thickness of the adhesive composition. Then, it becomes possible to improve the dimensional accuracy of the adhesive layer when the adhesive layer is formed.

（第４の塗布方法）
本塗布方法は、接着剤組成物を複数箇所に塗布する点で第３の塗布方法とは異なる。なお、第３の塗布方法と同様の構成であるものについては同じ符号を付している。図４（ａ）は第１の接着対象物の接着面が長方形で、接着剤組成物を２箇所塗布した状態を示す上面図であり、図４（ｂ）は図４（ａ）のように塗布した後、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。なお、図４（ｂ）は、第２の接着対象物を透過した図である。 (Fourth coating method)
This application method differs from the third application method in that the adhesive composition is applied to a plurality of locations. In addition, the same code|symbol is attached|subjected about the thing with the same structure as the 3rd coating method. FIG. 4(a) is a top view showing a state in which the bonding surface of the first object to be bonded is rectangular, and the adhesive composition is applied to two locations, and FIG. 4(b) is as shown in FIG. 4(a). FIG. 4 is a top view showing the state of the first object to be bonded and the adhesive composition when the second object to be bonded is provided and bonded after the application. In addition, FIG. 4B is a transparent view of the second bonding object.

図４（ａ）に示すように、例えば、接着剤組成物１を、第１の接着対象物２ａの接着面Ｍ１における長辺方向（図中Ｄ３方向）の中心線Ｘ３に線対称となるように所定の間隔をあけ、かつ短辺方向（図中Ｄ４方向）の中心線Ｘ４に線対称となるように中心線Ｘ４上に点状に２箇所塗布する。 As shown in FIG. 4(a), for example, the adhesive composition 1 is applied so as to be symmetrical about the center line X3 in the long side direction (D3 direction in the figure) on the bonding surface M1 of the first bonding object 2a. , and two spots are applied on the center line X4 so as to be symmetrical with respect to the center line X4 in the short side direction (D4 direction in the figure).

また、接着剤組成物１を、接着剤組成物１が塗布された第１の接着対象物２ｂ上に第２の接着対象物（不図示）を設けて加圧したとき、図４（ｂ）に示すように接着面Ｍ２からはみ出さずに概略円状に押し広がるように塗布する。 Further, when the adhesive composition 1 is applied to the first object to be bonded 2b to which the adhesive composition 1 is applied and a second object to be bonded (not shown) is provided and pressurized, FIG. As shown in FIG. 2, the adhesive is applied so as to spread in a substantially circular shape without protruding from the adhesive surface M2.

なお、本塗布方法では、接着剤組成物１同士が重ならない位置に塗布されているが、重なるように塗布する場合は、あらかじめ塗布された１箇所が加圧されて広がった時の半径Ｒ２を測定しておき、塗布した時の中心Ｋ４から半径Ｒ２の１／２以下で重なる位置を把握してから塗布するとよい。 In this application method, the adhesive composition 1 is applied at positions that do not overlap each other. It is preferable to measure and apply after grasping the overlapping position from the center K4 at the time of application at a distance of 1/2 or less of radius R2.

本塗布方法のように塗布することで、単数箇所に塗布した場合よりも接着剤組成物１が設けられる面積を広くすることが可能となる。また、接着剤組成物の厚みの均一性を確保することが可能となり、接着層を形成した際の接着層の寸法精度を高くすることができる。 By applying like this application method, it becomes possible to widen the area where the adhesive composition 1 is provided, as compared with the case where the adhesive composition 1 is applied to a single place. In addition, it becomes possible to ensure the uniformity of the thickness of the adhesive composition, and it is possible to improve the dimensional accuracy of the adhesive layer when the adhesive layer is formed.

（第５の塗布方法）
本塗布方法は、接着面が長方形の場合で、接着剤組成物を線状（帯状）に複数箇所塗布する点で第４の塗布方法とは異なる。なお、第４の塗布方法と同様の構成であるものについては同じ符号を付している。図５（ａ）は第１の接着対象物の接着面が長方形で、接着剤組成物を２箇所塗布した状態を示す上面図であり、図５（ｂ）は図５（ａ）のように塗布した後、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。なお、図５（ｂ）は、第２の接着対象物を透過した図である。 (Fifth coating method)
This application method differs from the fourth application method in that the adhesive composition is applied linearly (strip-like) to a plurality of locations when the adhesive surface is rectangular. In addition, the same code|symbol is attached|subjected about the thing with the same structure as the 4th coating method. FIG. 5(a) is a top view showing a state in which the adhesive surface of the first object to be adhered is rectangular, and the adhesive composition is applied to two locations, and FIG. 5(b) is as shown in FIG. 5(a). FIG. 4 is a top view showing the state of the first object to be bonded and the adhesive composition when the second object to be bonded is provided and bonded after the application. In addition, FIG. 5B is a transparent view of the second bonding object.

図５（ａ）に示すように、例えば、接着剤組成物１を、第１の接着対象物２ａの接着面Ｍ１における長辺方向（図中Ｄ３方向）の中心線Ｘ３に線対称となるように所定の間隔をあけ、かつ短辺方向（図中Ｄ４方向）の中心線Ｘ４に線対称となるように中心線Ｘ４に直交して線状（帯状）に２箇所塗布する。 As shown in FIG. 5(a), for example, the adhesive composition 1 is applied so as to be symmetrical about the center line X3 in the long side direction (D3 direction in the drawing) on the bonding surface M1 of the first bonding object 2a. are spaced apart from each other by a predetermined interval, and are linearly (band-like) applied to two locations perpendicular to the center line X4 in the short side direction (D4 direction in the figure) so as to be symmetrical with respect to the center line X4.

また、接着剤組成物１を、接着剤組成物１が塗布された第１の接着対象物２ｂ上に第２の接着対象物（不図示）を設けて加圧したとき、図５（ｂ）に示すように接着面Ｍ２からはみ出さずに概略楕円状に押し広がるように塗布する。 Further, when the adhesive composition 1 is applied to the first object to be bonded 2b to which the adhesive composition 1 is applied and a second object to be bonded (not shown) is provided and pressurized, As shown in FIG. 2, the adhesive is applied so as to spread out in a substantially elliptical shape without protruding from the adhesive surface M2.

なお、本塗布方法では、接着剤組成物１同士が重ならない位置に塗布されているが、重なるように塗布する場合は第２の塗布方法と同様に、あらかじめ塗布された１箇所が加圧されて広がった時の短半径Ｒ３を測定しておき、塗布した時の中心Ｋ５から短半径Ｒ３の１／２以下で重なる位置を把握してから塗布するとよい。なお、塗布した時の中心Ｋ５は、本塗布方法の場合は長方形状であるため接着剤組成物１の対角線Ｔ４の交点を中心Ｋ５としているが、その他多角形状の場合も同様に対角線の交点を中心とすることができる。また、多角形状以外の形状、例えば楕円形状等の場合は、長軸と短軸の交点を中心とする。 In this application method, the adhesive composition 1 is applied at positions that do not overlap each other. It is preferable to measure the short radius R3 when the coating spreads out, and to grasp the position where the short radius R3 overlaps from the center K5 at the time of application by 1/2 or less of the short radius R3 before coating. In addition, the center K5 when applied is a rectangular shape in the case of this coating method, so the center K5 is the intersection of the diagonal lines T4 of the adhesive composition 1, but in the case of other polygonal shapes, the intersection of the diagonal lines is also the center K5. can be centered. In the case of a shape other than a polygonal shape, such as an elliptical shape, the center is the intersection of the major axis and the minor axis.

本塗布方法では、接着剤組成物１を、第１の接着対象物２ａの接着面Ｍ１における長辺方向（図中Ｄ３方向）の中心線Ｘ３に線対称となるように所定の間隔をあけ、かつ短辺方向（図中Ｄ４方向）の中心線Ｘ４に線対称となるように中心線Ｘ４に直交して線状（帯状）に２箇所塗布しているが、これに限られることはない。例えば短辺方向（図中Ｄ４方向）の中心線Ｘ４に線対称となるように所定の間隔をあけ、かつ長辺方向（図中Ｄ３方向）の中心線Ｘ３に線対称となるように中心線Ｘ３に直交して線状（帯状）に２箇所塗布してもよい。 In this coating method, the adhesive composition 1 is applied at predetermined intervals so as to be symmetrical about the center line X3 in the long side direction (D3 direction in the figure) on the bonding surface M1 of the first bonding object 2a, In addition, two linear (band-like) coatings are applied perpendicular to the center line X4 so as to be symmetrical with the center line X4 in the short side direction (D4 direction in the figure), but the present invention is not limited to this. For example, a predetermined interval is provided so as to be symmetrical to the center line X4 in the short side direction (D4 direction in the figure), and the center line is symmetrical to the center line X3 in the long side direction (D3 direction in the figure). You may apply|coat in 2 linear (strip|belt shape) orthogonal to X3.

本塗布方法のように塗布することで、単数箇所に塗布する場合よりも接着剤組成物１が設けられる面積を広くすることが可能となる。また、接着剤組成物の厚みの均一性を確保することが可能となり、接着層を形成した際の接着層の寸法精度を高くすることができる。 By applying like this application method, it becomes possible to widen the area where the adhesive composition 1 is provided, as compared with the case where the adhesive composition 1 is applied to a single location. In addition, it becomes possible to ensure the uniformity of the thickness of the adhesive composition, and it is possible to improve the dimensional accuracy of the adhesive layer when the adhesive layer is formed.

（第６の塗布方法）
本塗布方法は、第４の塗布方法よりも接着面の長辺方向の長さが長く、接着剤組成物を点状に更に多く塗布する点で第４の塗布方法とは異なる。図６（ａ）は第１の接着対象物の接着面が長方形で、接着剤組成物を５箇所塗布した状態を示す上面図であり、図６（ｂ）は図６（ａ）のように塗布した後、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。なお、図６（ｂ）は、第２の接着対象物を透過した図である。 (Sixth coating method)
This application method is different from the fourth application method in that the length of the adhesive surface in the long side direction is longer than in the fourth application method, and more adhesive composition is applied in dots. FIG. 6(a) is a top view showing a state in which the adhesive surface of the first object to be adhered is rectangular, and the adhesive composition is applied to five locations, and FIG. 6(b) is as shown in FIG. 6(a). FIG. 4 is a top view showing the state of the first object to be bonded and the adhesive composition when the second object to be bonded is provided and bonded after the application. Note that FIG. 6B is a transparent view of the second bonding object.

図６（ａ）に示すように、例えば、接着剤組成物１を、第１の接着対象物２ａの接着面Ｍ１における長辺方向（図中Ｄ５方向）の中心線Ｘ５に線対称となるように所定の間隔をあけ、かつ短辺方向（図中Ｄ６方向）の中心線Ｘ６に線対称となるように中心線Ｘ６上に所定の間隔をあけて点状に５箇所塗布する。 As shown in FIG. 6(a), for example, the adhesive composition 1 is applied so as to be symmetrical about the center line X5 in the long side direction (D5 direction in the drawing) on the bonding surface M1 of the first bonding object 2a. , and five dots are applied at predetermined intervals on the center line X6 so as to be symmetrical with respect to the center line X6 in the short side direction (D6 direction in the figure).

また、接着剤組成物１を、接着剤組成物１が塗布された第１の接着対象物２ｃ上に第２の接着対象物（不図示）を設けて加圧したとき、図６（ｂ）に示すように接着面Ｍ３からはみ出さずに概略円状に押し広がるように塗布する。 Further, when the adhesive composition 1 is applied to the first object to be bonded 2c to which the adhesive composition 1 is applied and a second object to be bonded (not shown) is provided and pressurized, FIG. As shown in , the adhesive is applied so as to spread out in a substantially circular shape without protruding from the adhesive surface M3.

なお、本塗布方法では、接着剤組成物１同士が重ならない位置に塗布されているが、重なるように塗布する場合は、例えば図７に示すように塗布するとよい。図７（ａ）は第１の接着対象物の接着面が長方形で、接着剤組成物を７箇所塗布した状態を示す上面図であり、図７（ｂ）は図７（ａ）のように塗布した後、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。また、図７（ｃ）は、図７（ａ）で塗布された１箇所が、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。なお、図７（ｂ）及び（ｃ）は、第２の接着対象物を透過した図である。 In this application method, the adhesive compositions 1 are applied at positions that do not overlap each other. FIG. 7(a) is a top view showing a state in which the bonding surface of the first object to be bonded is rectangular, and the adhesive composition is applied to seven locations, and FIG. 7(b) is the state shown in FIG. 7(a). FIG. 4 is a top view showing the state of the first object to be bonded and the adhesive composition when the second object to be bonded is provided and bonded after the application. FIG. 7(c) shows the state of the adhesive composition and the first object to be adhered when the second object to be adhered is provided and bonded to the one portion applied in FIG. 7(a). It is a top view. 7(b) and 7(c) are views through the second bonding object.

図７（ａ）に示すように、接着剤組成物１を図６（ａ）と同じように、第１の接着対象物２ａの接着面Ｍ１における長辺方向（図中Ｄ５方向）の中心線Ｘ５に線対称となるように所定の間隔をあけ、かつ短辺方向（図中Ｄ６方向）の中心線Ｘ６に線対称となるように中心線Ｘ６上に所定の間隔をあけて点状に７箇所塗布する。 As shown in FIG. 7(a), the adhesive composition 1 is applied to the center line of the bonding surface M1 of the first bonding object 2a in the long side direction (D5 direction in the figure) in the same manner as in FIG. 6(a). 7 points on the center line X6 at predetermined intervals so as to be symmetrical to the center line X6 in the short side direction (D6 direction in the figure). Apply to spots.

また、接着剤組成物１を、接着剤組成物１が塗布された第１の接着対象物２ｃ上に第２の接着対象物（不図示）を設けて、接着剤組成物１が第１の接着対象物２ｃと第２の接着対象物との間で目的とする接着層厚みが得られる程度に加圧したとき、図７（ｂ）に示すように接着面Ｍ３からはみ出さずに概略円状に押し広がるように塗布する。 Alternatively, the adhesive composition 1 is applied to the first object to be bonded 2c, and a second object to be bonded (not shown) is provided on the first object to be bonded 2c. When pressure is applied between the object to be bonded 2c and the second object to be bonded to the extent that the desired thickness of the adhesive layer is obtained, as shown in FIG. Apply so that it spreads out in a shape.

この場合、第２の塗布方法と同様に、あらかじめ塗布された少なくとも１箇所が第２の接着対象物により加圧されて広がった時の半径Ｒ４（図７（ｃ）の半径Ｒ４）を測定しておき、塗布した時の中心Ｋ６から半径Ｒ４の１／２以下で重なる位置を把握してから塗布するとよい。すなわち、接着剤組成物１を第１の接着対象物２ｃ上に複数個所に塗布し、第１の接着対象物２ｃ上に第２の接着対象物（不図示）を設けて接合することで塗布された少なくとも１箇所が加圧されて広がった時の半径を基準としたとき、第１の接着対象物２ｃと第２の接着対象物との間で押し広がった時の接着剤組成物同士の重なりが、塗布した時の中心から半径の１／２（図７（ｂ）では半径Ｒ４の１／２）以下となるように塗布する。 In this case, similarly to the second application method, the radius R4 (radius R4 in FIG. 7(c)) is measured when at least one previously applied area is pressurized by the second object to be bonded and spreads. It is preferable to apply after grasping the overlapping position within 1/2 of the radius R4 from the center K6 at the time of application. That is, the adhesive composition 1 is applied to a plurality of locations on the first object to be bonded 2c, and a second object to be bonded (not shown) is provided on the first object to be bonded 2c and bonded. When pressure is applied to at least one place and spreads, the adhesive composition spreads between the first bonding object 2c and the second bonding object when the radius is used as a reference. The coating is applied so that the overlap is less than 1/2 of the radius (1/2 of the radius R4 in FIG. 7(b)) from the center of the coating.

なお、本塗布方法では接着剤組成物を奇数箇所塗布しているが、偶数箇所であってもよく、接着剤組成物１同士が重なっても重ならなくてもどちらでもよい。 In this application method, the adhesive composition is applied to an odd number of places, but it may be applied to an even number of places, and the adhesive compositions 1 may or may not overlap each other.

本塗布方法のように塗布することで、単数箇所に塗布する場合よりも接着剤組成物１が設けられる面積を広くすることが可能となる。また、接着剤組成物の厚みの均一性を確保することが可能となり、接着層を形成した際の接着層の寸法精度を高くすることができる。 By applying like this application method, it becomes possible to widen the area where the adhesive composition 1 is provided, as compared with the case where the adhesive composition 1 is applied to a single location. In addition, it becomes possible to ensure the uniformity of the thickness of the adhesive composition, and it is possible to improve the dimensional accuracy of the adhesive layer when the adhesive layer is formed.

（第７の塗布方法）
本塗布方法は、第６の塗布方法よりも接着面の短辺方向の長さが短く、接着剤組成物を線状（帯状）に複数塗布する点で第６の塗布方法とは異なる。図８（ａ）は第１の接着対象物の接着面が長方形で、接着剤組成物を４箇所塗布した状態を示す上面図であり、図８（ｂ）は図８（ａ）のように塗布した後、第２の接着対象物を設けて接合した際の第１の接着対象物と接着剤組成物の状態を示す上面図である。なお、図８（ｂ）は、第２の接着対象物を透過した図である。 (Seventh coating method)
This application method is different from the sixth application method in that the length of the adhesive surface in the short side direction is shorter than that in the sixth application method, and that the adhesive composition is applied in a plurality of lines (strips). FIG. 8(a) is a top view showing a state in which the adhesive surface of the first object to be adhered is rectangular, and the adhesive composition is applied to four locations, and FIG. 8(b) is as shown in FIG. 8(a). FIG. 4 is a top view showing the state of the first object to be bonded and the adhesive composition when the second object to be bonded is provided and bonded after the application. Note that FIG. 8B is a transparent view of the second object to be bonded.

図８（ａ）に示すように、例えば、接着剤組成物１を、第１の接着対象物２ａの接着面Ｍ１における長辺方向（図中Ｄ７方向）の中心線Ｘ７に線対称となるように所定の間隔をあけ、かつ短辺方向（図中Ｄ８方向）の中心線Ｘ８に線対称となるように中心線Ｘ８に平行に所定の間隔をあけて線状（帯状）に４箇所塗布する。 As shown in FIG. 8(a), for example, the adhesive composition 1 is applied so as to be symmetrical about the center line X7 in the long side direction (D7 direction in the figure) on the bonding surface M1 of the first bonding object 2a. , and in parallel with the center line X8 in the short side direction (D8 direction in the figure) so that it is symmetrical with respect to the center line X8. .

また、接着剤組成物１を、接着剤組成物１が塗布された第１の接着対象物２ｄ上に第２の接着対象物（不図示）を設けて加圧したとき、図８（ｂ）に示すように接着面Ｍ４からはみ出さずに概略楕円状に押し広がるように塗布する。 Further, when the adhesive composition 1 is applied to the first object to be bonded 2d to which the adhesive composition 1 is applied and a second object to be bonded (not shown) is provided and pressurized, FIG. As shown in , the adhesive is applied so as to spread out in a substantially elliptical shape without protruding from the adhesive surface M4.

なお、本塗布方法では、接着剤組成物１同士が重ならない位置に塗布しているが、重なるように設ける場合は、あらかじめ塗布された１箇所が加圧されて広がった時の長半径Ｒ５を測定しておき、塗布した時の中心Ｋ７から長半径Ｒ５の１／２以下で重なる位置を把握してから塗布するとよい。なお、塗布した時の中心Ｋ７は、本塗布方法の場合は長方形状であるため接着剤組成物１の対角線Ｔ５の交点を中心Ｋ７としているが、その他多角形状の場合も同様に対角線の交点を中心とすることができる。また、多角形状以外の形状、例えば楕円形状等の場合は、長軸と短軸の交点を中心とする。 In this application method, the adhesive composition 1 is applied at positions where the adhesive composition 1 does not overlap with each other. It is recommended that the measurement be made in advance, and the overlapping position from the center K7 at the time of application to 1/2 or less of the long radius R5 should be grasped before application. Note that the center K7 at the time of application is a rectangular shape in the case of this coating method, so the center K7 is the intersection of the diagonal lines T5 of the adhesive composition 1, but in the case of other polygonal shapes, the intersection of the diagonal lines is also the center K7. can be centered. In the case of a shape other than a polygonal shape, such as an elliptical shape, the center is the intersection of the major axis and the minor axis.

更に、本塗布方法では接着剤組成物を偶数箇所塗布しているが、３箇所以上の奇数箇所であってもよく、接着剤組成物１同士が重なっても重ならなくてもどちらでもよい。 Furthermore, in this application method, the adhesive composition is applied to an even number of spots, but it may be applied to an odd number of spots of 3 or more, and the adhesive compositions 1 may or may not overlap each other.

本塗布方法のように塗布することで、単数箇所に塗布する場合よりも接着剤組成物１が設けられる面積を広くすることが可能となる。また、接着剤組成物の厚みの均一性を確保することが可能となり、接着層を形成した際の接着層の寸法精度を高くすることができる。 By applying like this application method, it becomes possible to widen the area where the adhesive composition 1 is provided, as compared with the case where the adhesive composition 1 is applied to a single location. In addition, it becomes possible to ensure the uniformity of the thickness of the adhesive composition, and it is possible to improve the dimensional accuracy of the adhesive layer when the adhesive layer is formed.

工程３：接着剤組成物が塗布された第１の接着対象物上に第２の接着対象物を設けて接合し、接合体を形成する工程
工程３では、接着剤組成物が塗布された第１の接着対象物上に第２の接着対象物を設けて接着剤組成物を押し広げるように加圧し、接合体を形成する工程である。第２の接着対象物は、例えば磁石などがあげられるがこれに限られない。 Step 3: A step of providing a second object to be adhered on the first object to be adhered to which the adhesive composition is applied and joining them to form a joined body In Step 3, the second object to be adhered to which the adhesive composition is applied In this step, a second object to be bonded is provided on one object to be bonded, and pressure is applied so as to spread the adhesive composition to form a bonded body. Examples of the second object to be adhered include, but are not limited to, a magnet.

また、接着剤組成物を押し広げるように加圧する時、冶具を用いて押し広げるとよい。冶具を用いることで接着剤組成物の厚みを均一にすることが可能になるためである。
冶具の実施形態については、図９乃至図１２を用いて説明する。 Moreover, when pressurizing the adhesive composition so as to spread it, it is preferable to spread it using a jig. This is because the use of the jig makes it possible to make the thickness of the adhesive composition uniform.
Embodiments of the jig will be described with reference to FIGS. 9 to 12. FIG.

（第１の冶具の実施形態）
図９（ａ）は、冶具１０を用いて接合体１１を固定した状態の断面図であり、図９（ｂ）は保持部材１２の断面図である。図９（ａ）に示すように、冶具１０は接合体１１を保持するための凹部Ｃ１が形成されている保持部材１２と、保持部材１２の凹部Ｃ１に配置される接合体１１に接し、テーパ形状に形成された第１の押し込み部材１３と、第１の押し込み部材１３に対して嵌合可能なテーパ形状に形成され、第１の押し込み部材１３と保持部材１２との間に設けることで第１の押し込み部材１３を介して接合体１１を加圧するための第２の押し込み部材１４とを有している。 (Embodiment of the first jig)
FIG. 9(a) is a cross-sectional view of a state in which the joined body 11 is fixed using the jig 10, and FIG. 9(b) is a cross-sectional view of the holding member 12. FIG. As shown in FIG. 9A, the jig 10 is in contact with a holding member 12 having a concave portion C1 for holding the joined body 11 and the joined body 11 disposed in the concave portion C1 of the holding member 12, and is tapered. A first pushing member 13 formed in a shape and a tapered shape that can be fitted to the first pushing member 13 , and provided between the first pushing member 13 and the holding member 12 . and a second pressing member 14 for pressing the joined body 11 through the first pressing member 13 .

また、冶具１０は、保持部材１２のＹ軸方向の少なくとも一方の端面に、Ｘ－Ｚ平面と平行な面を持つ位置調整部材（図示せず）が接するように設けられている。そして、位置調整部材は凹部Ｃ１を覆うように設けられており、例えばネジ等で取り付けられている。なお、本実施形態では位置調整部材はネジ等で取り付けられているが、これに限られることはなく、保持部材１２と一体となっていてもよい。 Moreover, the jig 10 is provided so that a position adjusting member (not shown) having a surface parallel to the XZ plane is in contact with at least one end surface of the holding member 12 in the Y-axis direction. The position adjusting member is provided so as to cover the concave portion C1, and is attached with screws or the like, for example. In this embodiment, the position adjusting member is attached with a screw or the like, but it is not limited to this and may be integrated with the holding member 12 .

保持部材１２及び位置調整部材は加熱温度に耐えられる素材で形成されており、例えば金属から形成されている。また、保持部材１２に形成されている凹部Ｃ１は第１の凹部Ｃ１ａと第２の凹部Ｃ１ｂを有している。 The holding member 12 and the position adjusting member are made of a material that can withstand the heating temperature, such as metal. Further, the recess C1 formed in the holding member 12 has a first recess C1a and a second recess C1b.

凹部Ｃ１は、図９（ａ）及び（ｂ）に示す通り、横断面（Ｘ－Ｚ断面）が略コ字型状を呈しており、縦断面（Ｙ－Ｚ断面）が略コ字型状（一方端面に位置調整部材を有する場合）又は略ロ字型状（両端面に位置調整部材を有する場合）を呈している。すなわち、開口面１２ａ側に開口部を有し、開口面１２ａと略平行に設けられた第１の底面１２ｂを有し、第１の底面１２ｂに対して略垂直に設けられた一対の第１の側面１２ｃを有している。 As shown in FIGS. 9A and 9B, the recess C1 has a substantially U-shaped cross section (XZ cross section) and a substantially U-shaped vertical cross section (YZ cross section). (when one end face has a position adjusting member) or substantially rectangular shape (when both end faces have a position adjusting member). That is, a pair of first bottom surfaces 12b having an opening on the side of the opening surface 12a, having a first bottom surface 12b provided substantially parallel to the opening surface 12a, and provided substantially perpendicular to the first bottom surface 12b. has a side surface 12c of

なお、第１の底面１２ｂは開口面１２ａと略平行に設けられ、第１の側面１２ｃが第１の底面１２ｂと略垂直に設けられているが、これに限られない。接合体１１に対して均一に圧力をかけることが可能であればどの様に設けられていてもよく、複数箇所で線接触や点接触可能な形状に設けてもよい。 Although the first bottom surface 12b is provided substantially parallel to the opening surface 12a and the first side surface 12c is provided substantially perpendicular to the first bottom surface 12b, the present invention is not limited to this. It may be provided in any manner as long as it is possible to uniformly apply pressure to the joined body 11, and may be provided in a shape that allows line contact or point contact at a plurality of locations.

第１の凹部Ｃ１ａの開口幅Ｗ１は、接合体１１を保持し、第１の押し込み部材１３と第２の押し込み部材１４により接合体１１に対して均一に圧力をかけられるよう調整可能な幅に設けられている。そして、第１の底面１２ｂの幅Ｗ２は第１の開口幅Ｗ１に対して狭くなるように設けられている。 The opening width W1 of the first concave portion C1a is adjustable so that the joined body 11 can be held and pressure can be uniformly applied to the joined body 11 by the first pushing member 13 and the second pushing member 14. is provided. The width W2 of the first bottom surface 12b is set narrower than the first opening width W1.

また、第１の開口面１２ａから第１の底面１２ｂまでの長さＷ３は、接合体１１の長さ、すなわち接合体１１に圧力が付与されるＺ軸方向に対して垂直に交差するＸ軸方向の長さ以上であることが望ましい。接合体１１の長さよりも短いと接合体１１に対して均一に圧力をかけることが難しくなるためである。 Further, the length W3 from the first opening surface 12a to the first bottom surface 12b is the length of the joined body 11, that is, the X-axis perpendicularly crossing the Z-axis direction in which pressure is applied to the joined body 11. It is desirable that it is equal to or greater than the length of the direction. This is because if the length is shorter than the length of the joined body 11 , it becomes difficult to uniformly apply pressure to the joined body 11 .

第２の凹部Ｃ１ｂは、２箇所設けられており、第１の側面１２ｃと第１の底面１２ｂとに接する接合体１１の角部１１ａと、第１の側面１２ｃと第１の底面１２ｂとに接する第２の押し込み部材１４の角部１４ａが位置する場所に設けられている。すなわち、図９（ａ）及び（ｂ）に示す通り、横断面（Ｘ－Ｚ断面）が略コ字型状を呈する凹部Ｃ１の底面の角部に、略４５度上向きと略４５度下向きにそれぞれ開口を有する略コ字型状の第２の凹部Ｃ１ｂが２箇所設けられている。また、第２の凹部Ｃ１ｂはＹ軸方向に沿って連通して設けられている。なお、本実施形態では、第２の凹部Ｃ１ｂは２箇所設ける構成としたが、いずれか一方設ける構成であってもよい。 Two second recesses C1b are provided, one at the corner 11a of the joined body 11 contacting the first side surface 12c and the first bottom surface 12b, and the other at the first side surface 12c and the first bottom surface 12b. It is provided at a place where the corner 14a of the second pushing member 14 that comes into contact is located. That is, as shown in FIGS. 9(a) and 9(b), at the corners of the bottom surface of the concave portion C1 whose cross section (XZ cross section) exhibits a substantially U-shape, there are approximately 45 degrees upward and approximately 45 degree downward angles. Two substantially U-shaped second recesses C1b each having an opening are provided. Also, the second concave portion C1b is provided in communication along the Y-axis direction. In this embodiment, two second recesses C1b are provided, but one of them may be provided.

また、第２の凹部Ｃ１ｂは、開口方向Ｅに対して交差する方向に第２の底部１２ｄが設けられており、第２の底部１２ｄに対して略垂直に一対の第２の側面１２ｅが設けられている。第２の開口幅Ｗ４は、接合体１１の角部１１ａの一部と、第２の押し込み部材１４の角部１４ａの一部が挿入可能となるような幅に設けられている。そして、第２の底面１２ｄは、挿入された接合体１１の角部１１ａと、第２の押し込み部材１４の角部１４ａに接触しない位置にある。 The second recess C1b has a second bottom 12d in a direction intersecting the opening direction E, and a pair of second side surfaces 12e substantially perpendicular to the second bottom 12d. It is The second opening width W4 is set so that a part of the corner 11a of the joined body 11 and a part of the corner 14a of the second pushing member 14 can be inserted. The second bottom surface 12 d is positioned so as not to contact the corner 11 a of the inserted assembly 11 and the corner 14 a of the second pushing member 14 .

図１０（ａ）は第１の押し込み部材１３の断面図、図１０（ｂ）は第２の押し込み部材１４の断面図を示す。図９（ａ）、図１０（ａ）、（ｂ）に示すように、第１の押し込み部材１３は、接合体１１に接触する接合体接触面１３ａと、第１の底面１２ｂに接触する底面接触面１３ｂと、押し込み部材接触面１３ｃと、底面接触面１３ｂと対向する対向面１３ｄとを有する。底面接触面１３ｂと対向面１３ｄとは接合体接触面１３ａに対して略垂直に設けられている。第２の押し込み部材１４と接触する押し込み部材接触面１３ｃは、接合体接触面１３ａに対して傾斜している。すなわち、底面接触面１３ｂから対向面１３ｄに向かって接合体接触面１３ａに近づくように傾斜している。 10(a) shows a sectional view of the first pushing member 13, and FIG. 10(b) shows a sectional view of the second pushing member 14. FIG. As shown in FIGS. 9A, 10A, and 10B, the first pushing member 13 has a bonded body contact surface 13a that contacts the bonded body 11 and a bottom surface that contacts the first bottom surface 12b. It has a contact surface 13b, a pushing member contact surface 13c, and a facing surface 13d facing the bottom contact surface 13b. The bottom contact surface 13b and the opposing surface 13d are provided substantially perpendicular to the joined body contact surface 13a. A pushing member contact surface 13c that contacts the second pushing member 14 is inclined with respect to the joined body contact surface 13a. That is, the bottom surface contact surface 13b is inclined toward the opposing surface 13d so as to approach the bonded body contact surface 13a.

底面接触面１３ｂと対向する対向面１３ｄは底面接触面１３ｂと略平行となるように設けられ、底面接触面１３ｂと対向面１３ｄとの長さＷ４は、接合体１１の長さ、すなわち接合体に圧力が付与されるＺ軸方向に対して垂直に交差するＸ軸方向の長さ以上であることが望ましい。接合体１１の長さよりも短くなると、接合体１１に対して均一に圧力をかけることが難しくなるためである。なお、対向面１３ｄは底面接触面１３ｂと必ずしも平行でなくともよい。 A facing surface 13d facing the bottom contact surface 13b is provided so as to be substantially parallel to the bottom contact surface 13b. It is desirable that the length in the X-axis direction perpendicularly crossing the Z-axis direction in which pressure is applied to is longer than or equal to the length in the X-axis direction. This is because if the length is shorter than the length of the joined body 11 , it becomes difficult to uniformly apply pressure to the joined body 11 . Note that the facing surface 13d does not necessarily have to be parallel to the bottom contact surface 13b.

第２の押し込み部材１４は、保持部材１２に接触する保持部材接触面１４ｂと、第１の底面１２ｂに接触する底面接触面１４ｃと、第１の押し込み部材１３と接触する押し込み部材接触面１４ｄと、底面接触面１４ｃと対向する対向面１４ｅとを有する。底面接触面１４ｃと対向面１４ｅとは保持部材接触面１４ｂに対して略垂直に設けられている。第１の押し込み部材１３と接触する押し込み部材接触面１４ｄは、保持部材接触面１４ｂに対して傾斜している。すなわち、底面接触面１４ｃから対向面１４ｅに向かって保持部材接触面１４ｂから離間するように傾斜し、第１の押し込み部材１３の押し込み部材接触面１３ｃに沿うような角度で傾斜している。なお、本実施形態では第１の押し込み部材接触面１３ｃに沿うような角度で傾斜しているが、加圧する圧力を調整するために必要に応じて異なる角度で傾斜させてもよい。 The second pushing member 14 has a holding member contact surface 14b that contacts the holding member 12, a bottom surface contact surface 14c that contacts the first bottom surface 12b, and a pushing member contact surface 14d that contacts the first pushing member 13. , a bottom contact surface 14c and a facing surface 14e. The bottom contact surface 14c and the opposing surface 14e are provided substantially perpendicular to the holding member contact surface 14b. A pushing member contact surface 14d that contacts the first pushing member 13 is inclined with respect to the holding member contact surface 14b. That is, the bottom surface contact surface 14 c is inclined toward the opposing surface 14 e so as to be separated from the holding member contact surface 14 b and inclined at an angle along the pushing member contact surface 13 c of the first pushing member 13 . In this embodiment, it is inclined at an angle along the first pressing member contact surface 13c, but it may be inclined at a different angle as necessary in order to adjust the pressure to be applied.

また、底面接触面１４ｃと対向する対向面１４ｅは底面接触面１４ｃと略平行となるように設けられ、底面接触面１４ｃと対向面１４ｅとの長さＷ５は、接合体１１の長さ以上であることが望ましい。そして、第１の押し込み部材１３の底面接触面１３ｂと対向面１３ｄとの長さＷ４以上であることが望ましい。接合体１１の長さあるいは第１の押し込み部材１３の底面接触面１３ｂと対向面１３ｄとの長さＷ４よりも短くなると、接合体１１に対して均一に圧力をかけることが難しくなるためである。なお、対向面１４ｅは底面接触面１４ｃと必ずしも平行でなくともよい。 Further, the opposing surface 14e facing the bottom contact surface 14c is provided so as to be substantially parallel to the bottom contact surface 14c, and the length W5 between the bottom contact surface 14c and the opposing surface 14e is equal to or greater than the length of the joined body 11. It is desirable to have It is desirable that the length between the bottom contact surface 13b and the opposing surface 13d of the first pushing member 13 is W4 or more. This is because if it is shorter than the length of the joined body 11 or the length W4 between the bottom contact surface 13b and the opposing surface 13d of the first pushing member 13, it becomes difficult to apply pressure uniformly to the joined body 11. . Note that the opposing surface 14e does not necessarily have to be parallel to the bottom contact surface 14c.

この様な冶具１０を用いて接合体１１の接着剤組成物１を加熱硬化させるには、まず保持部材１２に接合体１１を第１の凹部Ｃ１ａに配置する。この時、第１の底面１２ｂと第１の側面１２ｃ、図示しない位置調整部材に接するように配置する。また、第１の側面１２ｃに接合体１１の第１の接着対象物２が接するように配置する。なお、第１の側面１２ｃに第２の接着対象物３が接するように配置してもよい。 In order to heat-harden the adhesive composition 1 of the joined body 11 using such a jig 10, first, the joined body 11 is placed in the first concave portion C1a of the holding member 12. As shown in FIG. At this time, the first bottom surface 12b and the first side surface 12c are arranged so as to be in contact with a position adjusting member (not shown). Also, the first bonding object 2 of the joined body 11 is arranged so as to be in contact with the first side surface 12c. Note that the second bonding object 3 may be arranged so as to be in contact with the first side surface 12c.

そして、第１の底面１２ｂと位置調整部材、接合体１１に接するように第１の押し込み部材１３を配置する。この時、第１の押し込み部材１３の底面接触面１３ｂは第１の底面１２ｂと接触し、第１の押し込み部材１３の接合体接触面１３ａは接合体１１の第２の接着対象物３と接するように配置する。なお、第１の接着対象物２が接するように配置してもよい。 Then, the first pressing member 13 is arranged so as to be in contact with the first bottom surface 12 b , the position adjusting member, and the joined body 11 . At this time, the bottom surface contact surface 13b of the first pushing member 13 contacts the first bottom surface 12b, and the joined body contact surface 13a of the first pushing member 13 contacts the second bonding object 3 of the joined body 11. placed like this. It should be noted that they may be arranged so that the first object to be bonded 2 is in contact with them.

その後、第１の底面１２ｂと第１の側面１２ｃ、第１の押し込み部材１３の押し込み部材接触面１３ｃ、そして位置調整部材に接するように第２の押し込み部材１４を押し込む。この時、第２の押し込み部材１４の底面接触面１４ｃは第１の底面１２ｂと接触し、第２の押し込み部材１４の保持部材接触面１４ｂは第１の側面１２ｃと接触するように押し込む。 After that, the second pushing member 14 is pushed so as to contact the first bottom surface 12b, the first side surface 12c, the pushing member contact surface 13c of the first pushing member 13, and the position adjusting member. At this time, the bottom contact surface 14c of the second pushing member 14 contacts the first bottom surface 12b, and the holding member contact surface 14b of the second pushing member 14 contacts the first side surface 12c.

なお、第２の押し込み部材１４の底面接触面１４ｃは、加圧する程度に合わせて第１の底面１２ｂと必ずしも接触しなくてもよい。加圧する力は、第２の押し込み部材１４を第１の底面１２ｂの方向へと押し込むにつれて高くなるが、第１の押し込み部材１４を介して接合体１１を加圧するため、接合体１１に対して第１の押し込み部材１３から均一な圧力を加えられるからである。 The bottom surface contact surface 14c of the second pushing member 14 may not necessarily contact the first bottom surface 12b depending on the degree of pressure applied. The pressing force increases as the second pushing member 14 is pushed toward the first bottom surface 12b. This is because a uniform pressure can be applied from the first pushing member 13 .

この様な冶具１０を用いて接着剤組成物を押し広げるように加圧し、接合体１１を形成することで、接着剤組成物の厚みの均一性を確保することが可能となり、接着層を形成した際の接着層の寸法精度を高くすることができる。 By using such a jig 10 to apply pressure to spread the adhesive composition and form a joined body 11, it is possible to ensure uniformity in the thickness of the adhesive composition and form an adhesive layer. It is possible to improve the dimensional accuracy of the adhesive layer at the time of bonding.

（第２の冶具の実施形態）
本実施形態では、保持部材が複数の部材から構成され、第１の押し込み部材と第２の押し込み部材の形状が異なる点で第１の冶具の実施形態とは異なる。図１１（ａ）は、冶具を用いて接合体を固定した状態の断面図であり、図１１（ｂ）は保持部材の断面図である。図１１（ａ）に示すように、冶具２０は複数の部材から構成され、部材を組み合わせることで接合体１１を保持するための凹部Ｃ２が形成されている保持部材２１、保持部材２１に配置される接合体１１に接する第１の押し込み部材２２と、第１の押し込み部材２２と保持部材２１との間に設けることで第１の押し込み部材２２を介して接合体１１を加圧するための第２の押し込み部材２３とを有している。 (Embodiment of second jig)
This embodiment differs from the first jig embodiment in that the holding member is composed of a plurality of members, and the shape of the first pushing member and the second pushing member are different. FIG. 11(a) is a cross-sectional view of a state in which the joined body is fixed using a jig, and FIG. 11(b) is a cross-sectional view of the holding member. As shown in FIG. 11(a), the jig 20 is composed of a plurality of members, and by combining the members, a holding member 21 having a concave portion C2 for holding the joined body 11 is formed, and the holding member 21 is arranged. and a second pressing member 22 for pressurizing the joined body 11 via the first pressing member 22 by providing between the first pressing member 22 and the holding member 21 . and a pushing member 23 of .

また、冶具２０は、保持部材２１のＹ軸方向の少なくとも一方の端面に、Ｘ－Ｚ平面と平行な面を持つ位置調整部材（図示せず）が接するように設けられている。そして、位置調整部材は凹部Ｃ２を覆うように設けられており、例えばネジ等で取り付けられている。なお、本実施形態では位置調整部材はネジ等で取り付けられているが、これに限られることはなく、保持部材１２の部材の一部と一体となっていてもよい。 Moreover, the jig 20 is provided so that a position adjusting member (not shown) having a surface parallel to the XZ plane is in contact with at least one end surface of the holding member 21 in the Y-axis direction. The position adjusting member is provided so as to cover the concave portion C2, and is attached by screws or the like, for example. In this embodiment, the position adjusting member is attached with a screw or the like, but it is not limited to this, and may be integrated with a part of the holding member 12 .

保持部材２１及び位置調整部材は加熱温度に耐えられる素材で形成されており、例えば金属から形成されている。また、保持部材２１は第１の部材２１ａ、第２の部材２１ｂ、第３の部材２１ｃの三つの部材から構成されている。 The holding member 21 and the position adjusting member are made of a material that can withstand the heating temperature, such as metal. The holding member 21 is composed of three members, a first member 21a, a second member 21b, and a third member 21c.

第１の部材２１ａは、柱状形状に形成されており、接触面２１ａ－１上で接合体１１と接する。また、第１の部材２１ａは接触面２１ａ－１上で第２の部材２１ｂと接し、例えばネジ等を用いて固定される。第２の部材２１ｂが固定される位置は、接合体１１を保持することが可能な位置であり、第１の部材２１ａの接触面２１ａ－１の端部で固定される。なお、本実施形態では接触面２１ａ－１の端部で固定されているが、接合体１１を保持することが可能な位置であれば端部から離間した位置で固定されてもよい。 The first member 21a is formed in a columnar shape and is in contact with the joined body 11 on the contact surface 21a-1. Also, the first member 21a is in contact with the second member 21b on the contact surface 21a-1, and is fixed using screws or the like. The position where the second member 21b is fixed is a position where the joined body 11 can be held, and is fixed at the end of the contact surface 21a-1 of the first member 21a. In this embodiment, it is fixed at the end of the contact surface 21a-1, but it may be fixed at a position spaced apart from the end as long as the joined body 11 can be held.

第２の部材２１ｂは、段差を有する形状であり、厚みが厚い領域Ｆ１と厚みが薄い領域Ｆ２を有している。なお、厚みとは、接合体１１を加圧するＺ軸方向に対して垂直に交差するＸ軸方向の厚さである。厚みが厚い領域Ｆ１は接合体１１を保持する領域であり、第２の部材２１ｂの接合体接触面２１ｂ－１で接合体１１と接する。厚みが薄い領域Ｆ２は第１の押し込み部材２２と第２の押し込み部材２３を保持する領域であり、押し込み部材接触面２１ｂ－２で第１の押し込み部材２２と第２の押し込み部材２３と接する。そして、接合体接触面２１ｂ－１と押し込み部材接触面２１ｂ－２は略平行となるように設けられており、接合体接触面２１ｂ－１と押し込み部材接触面２１ｂ－２との間にある段差面２１ｂ－３を介して接続している。 The second member 21b has a stepped shape, and has a thick region F1 and a thin region F2. The thickness is the thickness in the X-axis direction that perpendicularly intersects the Z-axis direction in which the joined body 11 is pressed. The region F1 with the larger thickness is a region for holding the joined body 11, and is in contact with the joined body 11 at the joined body contact surface 21b-1 of the second member 21b. The thin region F2 is a region for holding the first pushing member 22 and the second pushing member 23, and contacts the first pushing member 22 and the second pushing member 23 at the pushing member contact surface 21b-2. The joined body contact surface 21b-1 and the pushing member contact surface 21b-2 are provided so as to be substantially parallel, and there is a step between the joined body contact surface 21b-1 and the pushing member contact surface 21b-2. They are connected via the surface 21b-3.

また、第２の部材２１ｂの厚みが厚い領域Ｆ１は、接合体１１を保持する際、接合体１１が第１の部材２１ａから突出しない程度の厚さであり、かつ第２の部材２１ｂの高さ（Ｚ軸方向の長さ）が接合体１１の高さ（Ｚ軸方向の長さ）より高くならないよう設けられている。また、厚みが薄い領域Ｆ２は、第１の押し込み部材２２と第２の押し込み部材２３を保持する際、後述する第３の部材２１ｃから突出しない程度の厚さとなるよう設けられている。なお、厚みが薄い領域Ｆ２は、第１の押し込み部材２２と第２の押し込み部材２３が突出するように設けてもよく、接合体１１に対して第１の押し込み部材２２から均一な圧力を加えられる厚みであればどの様な厚みであってもよい。 Further, the region F1 where the second member 21b is thick has a thickness such that the joined body 11 does not protrude from the first member 21a when the joined body 11 is held. The height (length in the Z-axis direction) is provided so as not to be higher than the height (length in the Z-axis direction) of the joined body 11 . Further, the thin region F2 is provided so as to have a thickness that does not protrude from a third member 21c, which will be described later, when holding the first pushing member 22 and the second pushing member 23. FIG. The thin region F2 may be provided so that the first pressing member 22 and the second pressing member 23 protrude, and a uniform pressure is applied to the joined body 11 from the first pressing member 22. Any thickness may be used as long as the thickness is sufficient.

第３の部材２１ｃは、Ｘ軸方向の長さが第１の部材２１ａと同じ程度の長さであり、柱状形状に形成されている。また、第３の部材２１ｃの接触面２１ｃ－１上で第２の押し込み部材２３と接する。 The third member 21c has approximately the same length in the X-axis direction as the first member 21a, and is formed in a columnar shape. Also, the contact surface 21c-1 of the third member 21c is in contact with the second pushing member 23. As shown in FIG.

そして、第３の部材２１ｃは接触面２１ｃ－１上で第２の部材２１ｂと接し、例えばネジ等を用いて固定される。第２の部材２１ｂが固定される位置は、第２の押し込み部材２３を保持することが可能な位置であり、第３の部材２１ｃの接触面２１ｃ－１の端部で固定される。また、第３の部材２１ｃの接触面２１ｃ－１が第１の部材２１ａの接触面２１ａ－１と略平行となるように固定される。なお、本実施形態では接触面２１ｃ－１の端部で固定されているが、第２の押し込み部材２３を保持することが可能な位置であれば端部から離間した位置で固定されてもよい。 The third member 21c is in contact with the second member 21b on the contact surface 21c-1, and fixed using screws or the like. The position where the second member 21b is fixed is a position where the second pushing member 23 can be held, and is fixed at the end of the contact surface 21c-1 of the third member 21c. Further, the contact surface 21c-1 of the third member 21c is fixed so as to be substantially parallel to the contact surface 21a-1 of the first member 21a. In this embodiment, it is fixed at the end of the contact surface 21c-1, but it may be fixed at a position away from the end as long as it is possible to hold the second pushing member 23. .

なお、本実施形態では保持部材２１が三つの部材から構成されているが、接合体１１と、第１の押し込み部材２２、第２の押し込み部材２３を配置することが可能であればこれに限られることはなく、第１の部材２１ａと第２の部材２１ｂ、または第２の部材２１ｂと第３の部材２１ｃが一体となり、二つの部材から構成されていても良い。また、第１の部材２１ａと第２の部材２１ｂの一部と、第２の部材２１ｂのその他の部分と第３の部材２１ｃが一体となった二つの部材であってもよく、三つの部材が一体となっていてもよい。 In this embodiment, the holding member 21 is composed of three members, but if it is possible to dispose the joined body 11, the first pushing member 22, and the second pushing member 23, it is limited to this. Instead, the first member 21a and the second member 21b or the second member 21b and the third member 21c may be integrated to form two members. Alternatively, the first member 21a and part of the second member 21b, and the other part of the second member 21b and the third member 21c may be integrated into two members, or three members. may be integrated.

図１２（ａ）は第１の押し込み部材の断面図、図１２（ｂ）は第２の押し込み部材の断面図を示す。図１１、図１２（ａ）、（ｂ）に示すように、第１の押し込み部材２２は、柱状形状に形成されており、接合体１１と、第２の部材２１ｂの段差面２１ｂ－３とに接する接触面２２ａが設けられている。また、第２の部材２１ｂの押し込み部材接触面２１ｂ－２と接する第２の部材接触面２２ｂと、第２の押し込み部材２３と接する接触面２２ｃとが設けられている。 FIG. 12(a) shows a cross-sectional view of the first pushing member, and FIG. 12(b) shows a cross-sectional view of the second pushing member. As shown in FIGS. 11, 12(a) and 12(b), the first pushing member 22 is formed in a columnar shape, and the joined body 11 and the stepped surface 21b-3 of the second member 21b A contact surface 22a is provided for contacting the . A second member contact surface 22b that contacts the pushing member contact surface 21b-2 of the second member 21b and a contact surface 22c that contacts the second pushing member 23 are provided.

図１１（ａ）、図１２（ａ）、（ｂ）に示すように、第２の押し込み部材２３は、柱状形状に形成されており、接合体１１を加圧する方向であるＺ軸方向の厚みが、第１の押し込み部材２２の厚みよりも厚くなるように形成されている。なお、第１の押し込み部材２２と第２の押し込み部材２３の厚みが同じであってもよく、第１の押し込み部材２１の厚みの方が厚くなるように形成されていてもよい。 As shown in FIGS. 11(a), 12(a), and 12(b), the second pushing member 23 is formed in a columnar shape and has a thickness in the Z-axis direction, which is the direction in which the joined body 11 is pressed. is formed to be thicker than the thickness of the first pushing member 22 . The thickness of the first pressing member 22 and the second pressing member 23 may be the same, or the thickness of the first pressing member 21 may be greater.

また、図１１、図１２（ａ）、（ｂ）に示すように、第２の押し込み部材２３は、第１の押し込み部材２２と接する押し込み部材接触面２３ａと、第２の部材２１ｂの押し込み部材接触面２１ｂ－２と接する第２の部材接触面２３ｂと、第３の部材２１ｃと接触する第３の部材接触面２３ｃとを有している。 11, 12(a), and 12(b), the second pushing member 23 has a pushing member contact surface 23a in contact with the first pushing member 22 and a pushing member contact surface 23a of the second pushing member 21b. It has a second member contact surface 23b in contact with the contact surface 21b-2 and a third member contact surface 23c in contact with the third member 21c.

この様な冶具２０を用いて接合体１１の接着剤組成物１を加熱硬化させるには、まず第１の部材２１ａ、第２の部材２１ｂ、第３の部材２１ｃを用いて保持部材２１を組み立て、接合体１１を第１の部材２１ａ上に配置する。この時、第１の部材２１ａの接触面２１ａ－１と、第２の部材２１ｂの接合体接触面２１ｂ－１、図示しない位置調整部材に接するように配置する。また、第１の部材２１ａの接触面２１ａ－１に接合体１１の第１の接着対象物２、または第２の接着対象物３のどちらか一方が接するように配置する。 In order to heat-harden the adhesive composition 1 of the joined body 11 using such a jig 20, first, the holding member 21 is assembled using the first member 21a, the second member 21b, and the third member 21c. , the joined body 11 is placed on the first member 21a. At this time, the contact surface 21a-1 of the first member 21a, the joined body contact surface 21b-1 of the second member 21b, and the position adjusting member (not shown) are arranged so as to be in contact with each other. Either the first bonding object 2 or the second bonding object 3 of the joined body 11 is arranged so as to be in contact with the contact surface 21a-1 of the first member 21a.

そして、第１の押し込み部材２２の接触面２２ａを、接合体１１と、第２の部材２１ｂの段差面２１ｂ－３と、位置調整部材に接するように第１の押し込み部材２２を配置する。また、第１の押し込み部材２２の第２の部材接触面２２ｂが第２の部材２１ｂの押し込み部材接触面２１ｂ－２と接するように配置する。なお、第１の押し込み部材２２は、第２の部材２１ｂの押し込み部材接触面２１ｂ－２と接触しなくてもよく、接合体１１と、第２の部材２１ｂの段差面２１ｂ－３とに接するように配置すればよい。 Then, the first pushing member 22 is arranged so that the contact surface 22a of the first pushing member 22 is in contact with the joined body 11, the stepped surface 21b-3 of the second member 21b, and the position adjusting member. Also, the second member contact surface 22b of the first pushing member 22 is arranged to contact the pushing member contact surface 21b-2 of the second member 21b. Note that the first pushing member 22 does not have to contact the pushing member contact surface 21b-2 of the second member 21b, but contacts the joined body 11 and the stepped surface 21b-3 of the second member 21b. should be placed as follows.

その後、第２の押し込み部材２３を、第１の押し込み部材２２の押し込み部材接触面２２ｃと、第２の部材２１ｂの押し込み部材接触面２１ｂ－２と、第３の部材２１ｃの接触面２１ｃ－１と、位置調整部材に接するように配置する。なお、第２の押し込み部材２３は、第２の部材２１ｂの押し込み部材接触面２１ｂ－２と接触しなくてもよい。加圧する力は第１の押し込み部材２２を介して接合体１１を加圧するため、接合体１１に対して第１の押し込み部材２２から均一な圧力を加えられるからである。 After that, the second pushing member 23 is placed on the pushing member contact surface 22c of the first pushing member 22, the pushing member contact surface 21b-2 of the second member 21b, and the contact surface 21c-1 of the third member 21c. and the position adjusting member. The second pushing member 23 does not have to contact the pushing member contact surface 21b-2 of the second member 21b. This is because the pressurizing force presses the bonded body 11 through the first pressing member 22 , so that uniform pressure can be applied to the bonded body 11 from the first pressing member 22 .

この様な冶具２０を用いて接着剤組成物を押し広げるように加圧し、接合体１１を形成することで、接着剤組成物の厚みの均一性を確保することが可能となり、接着層を形成した際の接着層の寸法精度を高くすることができる。 By using such a jig 20 to apply pressure to spread the adhesive composition and form the joined body 11, it is possible to ensure uniformity in the thickness of the adhesive composition and form an adhesive layer. It is possible to improve the dimensional accuracy of the adhesive layer at the time of bonding.

工程４：接合体の接着剤組成物を硬化させて接着層を形成するように加熱する工程
工程４では、形成した接合体の接着剤組成物を加熱硬化させる工程である。この時、接合体が冶具で固定された状態で加熱硬化を行う。なお、加熱硬化する際に冶具で固定された状態で行わなくてもよく、他の冶具で固定し直してもよく、また冶具で固定せずに加熱硬化を行ってもよい。
加熱温度は、接着対象物の材質、接着組成物の材質、冶具の材質、加熱時間等により異なるが、接着剤組成物が硬化する温度、例えば１００℃～２００℃である。 Step 4: Step of Heating to Curing the Adhesive Composition of the Bonded Body to Form an Adhesive Layer Step 4 is a step of heating and curing the adhesive composition of the formed bonded body. At this time, heat curing is performed while the joined body is fixed by a jig. It should be noted that the heat hardening may not be carried out while being fixed by a jig, it may be fixed again by another jig, or the heat hardening may be carried out without being fixed by a jig.
The heating temperature varies depending on the material of the object to be bonded, the material of the adhesive composition, the material of the jig, the heating time, etc., but it is the temperature at which the adhesive composition cures, for example, 100°C to 200°C.

本開示の接着方法は、第１の接着対象物及び第２の接着対象物に磁石（例えば、Ｒ－Ｔ－Ｂ系焼結磁石）を用いることにより、積層磁石を得ることができる。
すなわち、第１の磁石と第１の磁石上に設けられる接着層と、接着層上に設けられる第２の磁石と、を有し、接着層は、接着層の厚み（μｍ）をｙ、係数をａ、フィラーの粒径（Ｄ５０）（μｍ）をｂ、接着層に含まれる熱硬化性樹脂の厚み（μｍ）をｃ、フィラーと、接着層に含まれる熱硬化性樹脂との質量混合比をｄとしたとき、（１）、（２）、（３）式を満たすことにより、積層磁石を得ることができる。
１０≦ｙ≦５０ （１）
０．９５×ａ×ｂ＋ｃ≦ｙ≦１．０５×ａ×ｂ＋ｃ （２）
ａ＝１．９４×ｄ＋０．６８ （３） In the bonding method of the present disclosure, a laminated magnet can be obtained by using magnets (for example, RTB sintered magnets) for the first bonding object and the second bonding object.
That is, it has a first magnet, an adhesive layer provided on the first magnet, and a second magnet provided on the adhesive layer. a, the particle size (D 50 ) (μm) of the filler, b, the thickness (μm) of the thermosetting resin contained in the adhesive layer, c, and the mass mixing of the filler and the thermosetting resin contained in the adhesive layer A laminated magnet can be obtained by satisfying the equations (1), (2), and (3) where the ratio is d.
10≤y≤50 (1)
0.95×a×b+c≦y≦1.05×a×b+c (2)
a = 1.94 x d + 0.68 (3)

実施例１
本実施例では、第１の接着対象物及び第２の接着対象物として、縦８ｍｍ×横８ｍｍ×高さ８ｍｍの寸法で、２８ｗｔ％Ｎｄ－７０ｗｔ％Ｆｅ－１ｗｔ％Ｂ－１ｗｔ％Ｃｏ組成のＲ－Ｔ－Ｂ系焼結磁石を使用した。また、熱硬化性樹脂として粘度が１００Ｐａ・ｓ以下の一液性エポキシ樹脂を使用した。フィラーはアルミナを使用した。 Example 1
In this embodiment, as the first bonding object and the second bonding object, the dimensions are 8 mm long × 8 mm wide × 8 mm high, and are composed of 28 wt% Nd-70 wt% Fe-1 wt% B-1 wt% Co. An RTB system sintered magnet was used. A one-liquid epoxy resin having a viscosity of 100 Pa·s or less was used as the thermosetting resin. Alumina was used as the filler.

まず、接着剤組成物を準備した。具体的には、フィラーの粒径（Ｄ５０）が３．４μｍ、８μｍ、１０μｍのものを準備し、接着層に含まれる熱硬化性樹脂の厚みが約１０μｍとなるように調整した熱硬化性樹脂を準備した上で、フィラーと、接着層に含まれる熱硬化性樹脂の質量混合比（フィラーの質量／接着層に含まれる熱硬化性樹脂の質量）が０、０．３、０．６、０．９、１．２５となるようにそれぞれ混合した。なお、フィラーの粒径（Ｄ５０）は（株）日本レーザー製 ＨＥＬＯＳ＆ＲＯＤＥＳを使用し、フランホーファ法（レーザー回折）により測定を行った。 First, an adhesive composition was prepared. Specifically, filler particles having a particle diameter (D 50 ) of 3.4 μm, 8 μm, and 10 μm were prepared, and the thermosetting resin was adjusted so that the thickness of the thermosetting resin contained in the adhesive layer was about 10 μm. After preparing the resin, the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer (mass of the filler/mass of the thermosetting resin contained in the adhesive layer) is 0, 0.3, or 0.6. , 0.9 and 1.25, respectively. The particle size (D 50 ) of the filler was measured by the Fraunhofer method (laser diffraction) using HELOS & RODES manufactured by Nippon Laser Co., Ltd.

次に、第１の接着対象物（Ｒ－Ｔ－Ｂ系焼結磁石）上に図１のように接着剤組成物をそれぞれ塗布した。
そして、接着剤組成物が塗布された第１の接着対象物（Ｒ－Ｔ－Ｂ系焼結磁石）上に第２の接着対象物（Ｒ－Ｔ－Ｂ系焼結磁石）を設けて接合し、接合体を形成した。なお、接合は、第２の冶具の実施形態で記載した冶具を用いた。 Next, each adhesive composition was applied onto the first object to be adhered (RTB sintered magnet) as shown in FIG.
Then, a second bonding object (RTB sintered magnet) is provided on the first bonding object (RTB sintered magnet) coated with the adhesive composition and bonded and formed a conjugate. For joining, the jig described in the embodiment of the second jig was used.

その後、接着剤組成物が硬化するまで第２の冶具に固定された接合体を第２の冶具ごと加熱した。
加熱後に第２の冶具から接合体を取り出し、得られた積層磁石の接着層厚みを測定した。 After that, the assembly fixed to the second jig was heated together with the second jig until the adhesive composition was cured.
After heating, the joined body was taken out from the second jig, and the thickness of the adhesive layer of the obtained laminated magnet was measured.

なお、接着層厚みは、断面を切断研磨して断面画像を撮り、画像解析ツールを使用して断面画像データから接着層の色（すなわち加熱硬化後の熱硬化性樹脂の色とフィラーの色）を識別し、接着層の面積から平均厚みを算出して求めた。また、熱硬化性樹脂の厚みは、加熱硬化後の断面を切断研磨して断面画像を撮り、画像解析ツールを使用して断面画像データから熱硬化性樹脂の色を識別し、熱硬化性樹脂の面積から平均厚みを算出した。 The thickness of the adhesive layer can be determined by cutting and polishing the cross section, taking a cross-sectional image, and using an image analysis tool to determine the color of the adhesive layer from the cross-sectional image data (that is, the color of the thermosetting resin after heat curing and the color of the filler). was identified, and the average thickness was calculated from the area of the adhesive layer. In addition, the thickness of the thermosetting resin is determined by cutting and polishing the cross section after heat curing, taking a cross-sectional image, and using an image analysis tool to identify the color of the thermosetting resin from the cross-sectional image data. The average thickness was calculated from the area of .

図１３は、接着層厚みに対するフィラーの粒径(Ｄ５０)と、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比の関係をプロットで示したものである。また、混合比ごとに接着層厚みとフィラーの粒径（Ｄ５０）の相関関係を示すために、混合比ごとに近似値を求めて示した。 FIG. 13 is a plot showing the relationship between the particle size (D 50 ) of the filler with respect to the adhesive layer thickness and the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer. In order to show the correlation between the thickness of the adhesive layer and the particle diameter (D 50 ) of the filler for each mixing ratio, an approximate value was obtained for each mixing ratio and shown.

質量混合比が０の場合（フィラーを混合しない場合）、接着層に含まれる熱硬化性樹脂の厚みが約１０μｍであったため、接着層厚みは熱硬化性樹脂の厚みと同じ約１０μｍであった。 When the mass mixing ratio was 0 (when no filler was mixed), the thickness of the thermosetting resin contained in the adhesive layer was about 10 μm, so the thickness of the adhesive layer was about 10 μm, which is the same as the thickness of the thermosetting resin. .

質量混合比が０．３の場合、接着層に含まれる熱硬化性樹脂に加えてフィラーが混合されるため、接着層厚みは熱硬化性樹脂の厚み（約１０μｍ）よりも厚くなった。混合する粒径が大きくなればなるほど接着層厚みが厚くなり、一次関数の相関があることが分かった。 When the mass mixing ratio was 0.3, the filler was mixed in addition to the thermosetting resin contained in the adhesive layer, so the thickness of the adhesive layer was greater than the thickness of the thermosetting resin (approximately 10 μm). It was found that the larger the mixed particle size, the thicker the adhesive layer, and there is a linear function correlation.

質量混合比が０．６の場合、接着層厚みは混合する粒径が大きくなればなるほど接着層厚みが厚くなり、質量混合比が０．３の場合よりも一次関数の傾きは大きくなった。なお、接着層に含まれる熱硬化性樹脂の厚みは約１０μｍである。 When the mass mixing ratio was 0.6, the thickness of the adhesive layer increased as the mixed particle size increased, and the slope of the linear function became greater than when the mass mixing ratio was 0.3. The thickness of the thermosetting resin contained in the adhesive layer is approximately 10 μm.

質量混合比が０．９の場合も質量混合比が０．３、０．６の場合と同様に、接着層厚みは混合する粒径が大きくなればなるほど接着層厚みが厚くなり、一次関数の傾きについては質量混合比が０．３、０．６より大きくなった。なお、接着層に含まれる熱硬化性樹脂の厚みは約１０μｍである。 When the mass mixing ratio is 0.9, as in the cases where the mass mixing ratio is 0.3 and 0.6, the thickness of the adhesive layer increases as the particle size to be mixed increases, and the thickness of the adhesive layer increases as a linear function. As for the slope, the mass mixing ratio was greater than 0.3 and 0.6. The thickness of the thermosetting resin contained in the adhesive layer is approximately 10 μm.

質量混合比が１．２５の場合も、接着層厚みは混合する粒径が大きくなればなるほど接着層厚みが厚くなり、一次関数の傾きが一番大きくなった。なお、接着層に含まれる熱硬化性樹脂の厚みは約１０μｍである。 Also when the mass mixing ratio was 1.25, the thickness of the adhesive layer increased as the particle diameter to be mixed increased, and the slope of the linear function became the largest. The thickness of the thermosetting resin contained in the adhesive layer is approximately 10 μm.

これらの結果から、接着層厚みに対して、フィラーの粒径(Ｄ５０)と、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比との間に一次関数の相関関係が存在することが分かる。また、フィラーの混合状態等を考慮して±５％の変動があることを考慮すると、本開示の（２）式で示すことができる。 These results show that there is a linear function correlation between the filler particle size (D 50 ) and the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer with respect to the thickness of the adhesive layer. I understand. Also, taking into account that there is a variation of ±5% in consideration of the mixed state of the filler, etc., it can be expressed by the formula (2) of the present disclosure.

更に、フィラーの粒径(Ｄ５０)と、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比の一次関数の傾き（係数α）に関する相関関係の有無を検討するため、図１４に示すように各質量混合比（０．３、０．６、０．９、１．２５）の一次関数の傾き（係数α）をプロットしたところ、傾き（係数α）も相関関係があることがわかった。また、近似値をとると本開示の（３）式に示すように、一次関数の相関関係があることがわかった。 Furthermore, in order to examine whether or not there is a correlation between the particle size (D 50 ) of the filler and the slope (coefficient α) of the linear function of the mass mixing ratio of the thermosetting resin contained in the filler and the adhesive layer, it is shown in FIG. When plotting the slope (coefficient α) of the linear function for each mass mixing ratio (0.3, 0.6, 0.9, 1.25), it is found that the slope (coefficient α) is also correlated. rice field. Also, it was found that when approximate values are taken, there is a linear function correlation as shown in the formula (3) of the present disclosure.

このことから、言い換えれば（１）式に示す範囲内で（２）及び（３）式の相関関係を満たすようにフィラーの粒径(Ｄ５０)と、接着層に含まれる熱硬化性樹脂の厚みと、フィラーと接着層に含まれる熱硬化性樹脂の質量混合比を調整して接着剤組成物を準備することで、目標とする接着層厚みを得ることが可能である。 From this, in other words, the particle size (D 50 ) of the filler and the thermosetting resin contained in the adhesive layer so as to satisfy the correlation of the formulas (2) and (3) within the range shown in the formula (1) By adjusting the thickness and the mass mixing ratio of the filler and the thermosetting resin contained in the adhesive layer to prepare the adhesive composition, it is possible to obtain the target thickness of the adhesive layer.

例えば、図１３に示す通り、目標とする接着層厚みが２０μｍであったとすると、質量混合比が０．３の場合はフィラーの粒径（Ｄ５０）が約８．５μｍのものを準備すればよい。また、質量混合比が０．６の場合はフィラーの粒径（Ｄ５０）が約５．５μｍのものを準備すればよく、質量混合比が０．９の場合はフィラーの粒径（Ｄ５０）が約４μｍのものを準備し、質量混合比が１．２５の場合はフィラーの粒径（Ｄ５０）が約３μｍのものを準備すればよい。 For example, as shown in FIG. 13, if the target adhesive layer thickness is 20 μm, when the mass mixing ratio is 0.3, a filler with a particle size (D 50 ) of about 8.5 μm is prepared. good. In addition, when the mass mixing ratio is 0.6, it is sufficient to prepare a filler with a particle size (D 50 ) of about 5.5 μm, and when the mass mixing ratio is 0.9, the filler particle size (D 50 ) is about 4 μm, and when the mass mixing ratio is 1.25, the particle diameter (D 50 ) of the filler is about 3 μm.

このように、（１）式に示す範囲内で目標とする接着層厚みを設定し、（３）式で求めた一次関数の傾き（係数α）を（２）式に適用してあらかじめ準備を行うことが可能になるため、寸法精度の高い接着を行うことが可能になる。 In this way, the target adhesive layer thickness is set within the range shown in formula (1), and the slope (coefficient α) of the linear function obtained by formula (3) is applied to formula (2) to prepare in advance. Therefore, it is possible to perform bonding with high dimensional accuracy.

実施例２
Ｒ－Ｔ－Ｂ系焼結磁石の寸法が縦６ｍｍ×横４３ｍｍ×高さ８ｍｍである以外は実施例１と同様にして第１及び第２の接着対象物を準備した。また、実施例１と同様に、熱硬化性樹脂は粘度が１００Ｐａ・ｓ以下の一液性エポキシ樹脂を使用し、フィラーはアルミナを使用した。
本実施例について、図１５（ａ）、（ｂ）、図１６を用いて説明する。図１５（ａ）は接着剤組成物を塗布した状態を示す斜視図であり、（ｂ）は加熱硬化後の積層磁石の斜視図である。図１６は各サンプルの接着層厚みの変位を示すグラフである。 Example 2
First and second bonding objects were prepared in the same manner as in Example 1, except that the dimensions of the RTB sintered magnet were length 6 mm, width 43 mm, and height 8 mm. As in Example 1, the thermosetting resin used was a one-liquid epoxy resin having a viscosity of 100 Pa·s or less, and the filler used alumina.
This embodiment will be described with reference to FIGS. 15(a), (b), and FIG. FIG. 15(a) is a perspective view showing a state in which an adhesive composition is applied, and FIG. 15(b) is a perspective view of a laminated magnet after heat curing. FIG. 16 is a graph showing the variation in adhesive layer thickness of each sample.

本実施例では、第１の接着対象物及び第２の接着対象物に、接着面が長方形に形成されているＲ－Ｔ－Ｂ系焼結磁石を用いて積層磁石を作成し、その寸法精度を測定した。接着剤組成物の準備では、接着層の狙い厚みを２０μｍとし、接着層に含まれる熱硬化樹脂の厚みは１０μｍであり、用いたフィラーの粒径（Ｄ５０）は３μｍであり、フィラーと接着層に含まれる熱硬化性樹脂との質量混合比が１．２５となるものを用いた。なお、これらは本開示の式（１）～（３）を満足している。また、フィラーの粒径（Ｄ５０）は（株）日本レーザー製 ＨＥＬＯＳ＆ＲＯＤＥＳを使用し、フランホーファ法（レーザー回折）により測定を行った。 In this embodiment, laminated magnets are produced by using RTB sintered magnets having rectangular bonding surfaces for the first bonding object and the second bonding object. was measured. In the preparation of the adhesive composition, the target thickness of the adhesive layer was 20 μm, the thickness of the thermosetting resin contained in the adhesive layer was 10 μm, the particle diameter (D 50 ) of the filler used was 3 μm, and the filler and the adhesive were bonded together. A material having a mass mixing ratio of 1.25 with respect to the thermosetting resin contained in the layer was used. Note that these satisfy formulas (1) to (3) of the present disclosure. The particle diameter (D 50 ) of the filler was measured by the Fraunhofer method (laser diffraction) using HELOS & RODES manufactured by Nippon Laser Co., Ltd.

そして、図１５（ａ）に示すように、接着剤組成物３１を第１の接着対象物３２の長辺方向（図中Ｄ９方向）の中心線Ｘ９に線対称となるように所定の間隔をあけ、かつ短辺方向（図中Ｄ１０方向）の中心線Ｘ１０に線対称となるように中心線Ｘ１０上に所定の間隔をあけて点状に８箇所塗布した。この時、接着剤組成物３１が塗布された第１の接着対象物３２上に第２の接着対象物３３を設けて加圧したとき、図１５（ｂ）に示すように接着面Ｍ５からはみ出さずに略円状に押し広がるように塗布した。また、接着剤組成物３１同士が重ならないような位置に塗布した。 Then, as shown in FIG. 15(a), the adhesive composition 31 is placed at predetermined intervals so as to be symmetrical about the center line X9 in the long side direction (D9 direction in the drawing) of the first object 32 to be adhered. Eight spots were applied at predetermined intervals on the center line X10 so as to be symmetrical about the center line X10 in the short side direction (D10 direction in the figure). At this time, when the second object to be bonded 33 is placed on the first object to be bonded 32 coated with the adhesive composition 31 and pressurized, as shown in FIG. It was applied so as to push and spread in a substantially circular shape. Also, the adhesive composition 31 was applied to a position such that the adhesive compositions 31 did not overlap each other.

その後、接着剤組成物３１が塗布された第１の接着対象物３２上に第２の接着対象物３３を設けて接着剤組成物３１を押し広げるように加圧し、接合体を形成した。 After that, a second object to be bonded 33 was provided on the first object to be bonded 32 to which the adhesive composition 31 was applied, and pressure was applied to spread the adhesive composition 31 to form a joined body.

そして、第１の冶具の実施形態で記載した冶具を用いて接合体に均一に圧力をかけて、狙いの接着層厚みに固定した後に接着剤組成物が硬化するまで冶具ごと加熱し、図１５（ｂ）に示すような積層磁石３０を作成した。なお、この積層磁石３０は接着層３４の寸法精度を測定するため、サンプルとして３０個作成した。 Then, using the jig described in the embodiment of the first jig, uniform pressure is applied to the joined body, and after fixing the adhesive layer to the target thickness, the jig is heated together with the jig until the adhesive composition is cured. A laminated magnet 30 as shown in (b) was produced. In order to measure the dimensional accuracy of the adhesive layer 34, 30 samples of the laminated magnet 30 were prepared.

次に、図１５（ｂ）に示すように、積層磁石３０の接着層３４の寸法精度を調べるため、３０サンプル分の積層磁石３０の５か所（ａ点、ｂ点、ｃ点、ｄ点、ｅ点）の接着層３４の厚みを測定し、５か所のうちの最大厚みと最小厚みの差を求め変位（ｍｍ）を求めた。なお、ａ点、ｂ点、ｃ点は、長辺方向Ｄ９の中心線Ｘ９上の位置であり、ｂ点、ｄ点、ｅ点は、短辺方向Ｄ１０の中心線Ｘ１０上の位置である。また、各点は線対象となるように設定した。接着層厚みは、断面を切断研磨して断面画像を撮り、画像解析ツールを使用して断面画像データから接着層の色（すなわち加熱硬化後の熱硬化性樹脂の色とフィラーの色）を識別し、接着層の面積から平均厚みを算出して求めた。 Next, as shown in FIG. 15B, in order to examine the dimensional accuracy of the adhesive layer 34 of the laminated magnet 30, 30 samples of the laminated magnet 30 were measured at five points (a point, b point, c point, d point). , e points), and the difference between the maximum thickness and the minimum thickness of the five points was obtained to obtain the displacement (mm). Points a, b, and c are positions on the center line X9 in the long side direction D9, and points b, d, and e are positions on the center line X10 in the short side direction D10. In addition, each point was set to be line symmetrical. To determine the thickness of the adhesive layer, cut and polish the cross section, take a cross-sectional image, and use an image analysis tool to identify the color of the adhesive layer (that is, the color of the thermosetting resin after heat curing and the color of the filler) from the cross-sectional image data. Then, the average thickness was calculated from the area of the adhesive layer.

その結果、図１６に示すようにいずれのサンプルも変位が０．０１ｍｍ以下となり、サンプル間での変位のばらつきが小さい結果となった。すなわち、寸法精度の高い積層磁石を作成することが出来た。 As a result, as shown in FIG. 16, the displacement of each sample was 0.01 mm or less, and the variation in displacement between samples was small. That is, a laminated magnet with high dimensional accuracy could be produced.

１、３１…接着剤組成物
２、２ａ、２ｂ、２ｃ、２ｄ、３２…第１の接着対象物
３、３３…第２の接着対象物
１０、２０…冶具
１１…接合体
１２、２１…保持部材
１３、２２…第１の押し込み部材
１４、２３…第２の押し込み部材
２１ａ…第１の部材
２１ｂ…第２の部材
２１ｃ…第３の部材
３０…積層磁石
３４…接着層 Reference Signs List 1, 31 Adhesive composition 2, 2a, 2b, 2c, 2d, 32 First object to be bonded 3, 33 Second object to be bonded 10, 20 Jig 11 Joined body 12, 21 Holding Members 13, 22... First pushing members 14, 23... Second pushing member 21a... First member 21b... Second member 21c... Third member 30... Laminated magnet 34... Adhesive layer

Claims (2)

接着剤組成物を準備する工程と、
第１の接着対象物であるＲ－Ｔ－Ｂ系焼結磁石上に前記接着剤組成物をディスペンサーで塗布する工程と、
前記接着剤組成物が塗布された前記第１の接着対象物であるＲ－Ｔ－Ｂ系焼結磁石上に第２の接着対象物であるＲ－Ｔ－Ｂ系焼結磁石を設けて接合し、接合体を形成する工程と、
前記接合体の前記接着剤組成物を硬化させて接着層を形成するように加熱する工程と、
を含み、
前記接着剤組成物を準備する工程では、前記接着層の厚み（μｍ）をｙ、係数をａ、アルミナのフィラーの粒径（Ｄ５０）（μｍ）をｂ、前記接着層に含まれる熱硬化性の一液性エポキシ樹脂の厚み（μｍ）をｃ、前記アルミナのフィラーと、前記接着層に含まれる熱硬化性樹脂との質量混合比をｄとしたとき、（１）、（２）、（３）式を満たすように準備し、
１０≦ｙ≦５０ （１）
０．９５×ａ×ｂ＋ｃ≦ｙ≦１．０５×ａ×ｂ＋ｃ （２）
ａ＝１．９４×ｄ＋０．６８ （３）
但し、（２）式において、３≦ｂ≦１０であり、
（３）式において、０．３≦ｄ≦１．２５であり、
また、前記ｃは、予めｄ＝０として加熱硬化した後、加熱硬化後の断面を切断研磨して断面画像を撮り、画像解析ツールを使用して断面画像データから前記一液性エポキシ樹脂の色を識別し、前記一液性エポキシ樹脂の面積から算出した平均厚みであり、
前記一液性エポキシ樹脂は、前記アルミナのフィラーを入れる前の粘度が１００Ｐａ・ｓ以下のものであり、
前記アルミナのフィラーの粒度分布は、前記アルミナのフィラーの粒径（Ｄ ５０ ）が前記アルミナのフィラーの最大粒径の１／２以下であり、
前記アルミナのフィラーの最大粒径は、前記接着層の厚みから前記接着層に含まれる前記一液性エポキシ樹脂の厚みを差し引いた大きさ以下であり、
前記接着層の厚みの変位は０．０１ｍｍ以下であり、
前記塗布する工程では、前記接着剤組成物を前記第１の接着対象物上に複数個所に塗布し、前記第１の接着対象物上に第２の接着対象物を設けて接合することで塗布された少なくとも１箇所が加圧されて広がった時の長半径又は短半径を基準としたとき、前記第１の接着対象物と前記第２の接着対象物との間で押し広がった時の前記接着剤組成物同士の重なりが、塗布した時の中心から長半径又は短半径の１／２以下となるように塗布する、接着方法。 preparing an adhesive composition;
applying the adhesive composition with a dispenser onto the RTB sintered magnet, which is the first object to be adhered;
An RTB sintered magnet, which is a second bonding object, is provided on the RTB sintered magnet, which is the first bonding object, to which the adhesive composition is applied, and bonded. and forming a conjugate;
heating to cure the adhesive composition of the bonded body to form an adhesive layer;
including
In the step of preparing the adhesive composition, y is the thickness (μm) of the adhesive layer, a is the coefficient, b is the particle size (D 50 ) (μm) of the alumina filler, and the thermosetting When c is the thickness (μm) of the one-component epoxy resin, and d is the mass mixing ratio between the alumina filler and the thermosetting resin contained in the adhesive layer, (1), (2), (3) prepared to satisfy the formula,
10≤y≤50 (1)
0.95×a×b+c≦y≦1.05×a×b+c (2)
a = 1.94 x d + 0.68 (3)
However, in formula (2), 3 ≤ b ≤ 10,
(3), 0.3 ≤ d ≤ 1.25,
In the above c, after heat curing in advance with d = 0, the cross section after heat curing is cut and polished to take a cross-sectional image, and an image analysis tool is used to determine the color of the one-liquid epoxy resin from the cross-sectional image data. is the average thickness calculated from the area of the one-component epoxy resin,
The one-liquid epoxy resin has a viscosity of 100 Pa s or less before adding the alumina filler,
In the particle size distribution of the alumina filler, the particle size (D 50 ) of the alumina filler is 1/2 or less of the maximum particle size of the alumina filler,
The maximum particle size of the alumina filler is equal to or less than the thickness of the adhesive layer minus the thickness of the one-liquid epoxy resin contained in the adhesive layer,
The displacement of the thickness of the adhesive layer is 0.01 mm or less,
In the applying step, the adhesive composition is applied to a plurality of locations on the first object to be adhered, and a second object to be adhered is provided on the first object to be adhered to be bonded. When the major radius or the minor radius when at least one of the bonded objects is pressurized and spread is used as a reference, the above when the pressure spreads between the first bonding object and the second bonding object A bonding method in which the adhesive compositions are applied so that the overlapping of the adhesive compositions is 1/2 or less of the major radius or the minor radius from the center of the application. 接着剤組成物を準備する工程と、
第１の接着対象物であるＲ－Ｔ－Ｂ系焼結磁石上に前記接着剤組成物をディスペンサーで塗布する工程と、
前記接着剤組成物が塗布された前記第１の接着対象物であるＲ－Ｔ－Ｂ系焼結磁石上に第２の接着対象物であるＲ－Ｔ－Ｂ系焼結磁石を設けて接合し、接合体を形成する工程と、
前記接合体の前記接着剤組成物を硬化させて接着層を形成するように加熱する工程と、
を含み、
前記接着剤組成物を準備する工程では、前記接着層の厚み（μｍ）をｙ、係数をａ、アルミナのフィラーの粒径（Ｄ ５０ ）（μｍ）をｂ、前記接着層に含まれる熱硬化性の一液性エポキシ樹脂の厚み（μｍ）をｃ、前記アルミナのフィラーと、前記接着層に含まれる熱硬化性樹脂との質量混合比をｄとしたとき、（１）、（２）、（３）式を満たすように準備し、
１０≦ｙ≦５０ （１）
０．９５×ａ×ｂ＋ｃ≦ｙ≦１．０５×ａ×ｂ＋ｃ （２）
ａ＝１．９４×ｄ＋０．６８ （３）
但し、（２）式において、３≦ｂ≦１０であり、
（３）式において、０．３≦ｄ≦１．２５であり、
また、前記ｃは、予めｄ＝０として加熱硬化した後、加熱硬化後の断面を切断研磨して断面画像を撮り、画像解析ツールを使用して断面画像データから前記一液性エポキシ樹脂の色を識別し、前記一液性エポキシ樹脂の面積から算出した平均厚みであり、
前記一液性エポキシ樹脂は、前記アルミナのフィラーを入れる前の粘度が１００Ｐａ・ｓ以下のものであり、
前記アルミナのフィラーの粒度分布は、前記アルミナのフィラーの粒径（Ｄ ５０ ）が前記アルミナのフィラーの最大粒径の１／２以下であり、
前記アルミナのフィラーの最大粒径は、前記接着層の厚みから前記接着層に含まれる前記一液性エポキシ樹脂の厚みを差し引いた大きさ以下であり、
前記接着層の厚みの変位は０．０１ｍｍ以下であり、
前記塗布する工程では、前記接着剤組成物を前記第１の接着対象物上に複数個所に塗布し、前記第１の接着対象物上に第２の接着対象物を設けて接合することで塗布された少なくとも１箇所が加圧されて広がった時の半径を基準としたとき、前記第１の接着対象物と前記第２の接着対象物との間で押し広がった時の前記接着剤組成物同士の重なりが、塗布した時の中心から半径の１／２以下となるように塗布する、接着方法。 preparing an adhesive composition;
applying the adhesive composition with a dispenser onto the RTB sintered magnet, which is the first object to be adhered;
An RTB sintered magnet, which is a second bonding object, is provided on the RTB sintered magnet, which is the first bonding object, to which the adhesive composition is applied, and bonded. and forming a conjugate;
heating to cure the adhesive composition of the bonded body to form an adhesive layer;
including
In the step of preparing the adhesive composition, y is the thickness (μm) of the adhesive layer, a is the coefficient, b is the particle size (D 50 ) (μm) of the alumina filler, and the thermosetting When c is the thickness (μm) of the one-component epoxy resin, and d is the mass mixing ratio between the alumina filler and the thermosetting resin contained in the adhesive layer, (1), (2), (3) prepared to satisfy the formula,
10≤y≤50 (1)
0.95×a×b+c≦y≦1.05×a×b+c (2)
a = 1.94 x d + 0.68 (3)
However, in formula (2), 3 ≤ b ≤ 10,
(3), 0.3 ≤ d ≤ 1.25,
In the above c, after heat curing in advance with d = 0, the cross section after heat curing is cut and polished to take a cross-sectional image, and an image analysis tool is used to determine the color of the one-liquid epoxy resin from the cross-sectional image data. is the average thickness calculated from the area of the one-component epoxy resin,
The one-liquid epoxy resin has a viscosity of 100 Pa s or less before adding the alumina filler,
In the particle size distribution of the alumina filler, the particle size (D 50 ) of the alumina filler is 1/2 or less of the maximum particle size of the alumina filler,
The maximum particle size of the alumina filler is equal to or less than the thickness of the adhesive layer minus the thickness of the one-liquid epoxy resin contained in the adhesive layer,
The displacement of the thickness of the adhesive layer is 0.01 mm or less,
In the applying step, the adhesive composition is applied to a plurality of locations on the first object to be adhered, and a second object to be adhered is provided on the first object to be adhered to be bonded. The adhesive composition when it spreads between the first object to be bonded and the second object to be bonded, based on the radius when at least one place is pressed and spread A bonding method in which the overlap of each other is 1/2 or less of the radius from the center when applied .
JP2018167751A 2018-09-07 2018-09-07 Adhesion method and laminated magnet Active JP7232387B2 (en)

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