WO2018194074A1 - 積層体及びその製造方法 - Google Patents

積層体及びその製造方法 Download PDF

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Publication number
WO2018194074A1
WO2018194074A1 PCT/JP2018/015920 JP2018015920W WO2018194074A1 WO 2018194074 A1 WO2018194074 A1 WO 2018194074A1 JP 2018015920 W JP2018015920 W JP 2018015920W WO 2018194074 A1 WO2018194074 A1 WO 2018194074A1
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WO
WIPO (PCT)
Prior art keywords
adhesive
glass
laminate
laminated
chamfered portion
Prior art date
Application number
PCT/JP2018/015920
Other languages
English (en)
French (fr)
Inventor
仁 植村
浩祐 青木
浩司 宮坂
Original Assignee
Ａｇｃ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ａｇｃ株式会社 filed Critical Ａｇｃ株式会社
Priority to CN201880025640.4A priority Critical patent/CN110573337A/zh
Priority to JP2019513660A priority patent/JPWO2018194074A1/ja
Publication of WO2018194074A1 publication Critical patent/WO2018194074A1/ja
Priority to US16/601,779 priority patent/US20200039182A1/en

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    • B32B7/04—Interconnection of layers
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Definitions

  • the present invention relates to a laminate in which a plurality of members including glass are bonded with an adhesive and a method for manufacturing the same.
  • Patent Documents 1 and 2 disclose a laminate in which members containing glass are combined with an adhesive.
  • the glass laminated body used for a display etc. is proposed.
  • the glass films with a plurality of reflective films are integrated by interposing an adhesive therebetween to form a glass laminate.
  • Patent Document 1 by devising a method of attaching an adhesive, it is possible to prevent bubbles in the adhesive layer and reduce the thickness difference of the adhesive layer.
  • achieved by using the near infrared absorption glass in a glass laminated body, or using what has an infrared absorption function for an adhesive agent is proposed. ing.
  • the adhesive when a glass-containing member is bonded with an adhesive, the adhesive sometimes protrudes from the end of the member during bonding (see FIG. 15).
  • the properties and physical properties of the glass change depending on the adhesive that protrudes during use, which may affect the intended use.
  • it is possible to provide a process for removing the protruding adhesive there is a possibility that an influence on the next process or a problem of manufacturing cost may occur.
  • there are methods such as reducing the amount of adhesive and applying adhesive at a position away from the end in order to prevent protrusion, but in that case the adhesive does not reach the end sufficiently and the end There is a risk that the adhesive strength may be reduced, such as peeling off from the substrate. Considering the point of improving the adhesive force and making it difficult to peel off, it is preferable that the adhesive spreads to the end.
  • An object of the present invention is to provide a laminate that prevents the adhesive from sticking to the side surface of the glass and does not affect the intended use, and a method for producing the same.
  • the present inventor found that at least one of the laminated members is glass, and at least the laminated surface of the glass is a laminated body having a chamfered portion at the end, the above I found that the problem could be solved.
  • the laminate of the present invention is a laminate obtained by adhering at least a plurality of members containing glass with an adhesive, and has a chamfered portion at an end of the laminated surface of the bonded glass, and the chamfered portion includes the chamfered portion. It is characterized in that an adhesive is adhered.
  • the adhesive is UV curable resin, acrylic adhesive, silicon adhesive, urethane adhesive, polyamide adhesive, vinyl acetate adhesive, ester adhesive, styrene adhesive. , Cyanoacrylate adhesive, PVA adhesive, PP adhesive, PC adhesive, PET adhesive, PMMA adhesive, PES adhesive, PEN adhesive, cellulose adhesive, silane coupling It is at least one selected from the group consisting of an adhesive based on epoxy and an adhesive based on epoxy.
  • the laminate of the present invention is characterized in that the surface roughness of the adhesion portion of the laminated surface is smaller than the surface roughness of the chamfered portion.
  • the method for manufacturing a laminate of the present invention is a method for manufacturing a laminate in which a plurality of members including at least glass are bonded with an adhesive, and chamfering an end portion of the laminated surface of the glass to form a chamfered portion.
  • FIG. 1 shows an example of the side view of Embodiment 1 of the laminated body of this invention.
  • FIG. 2 shows an example of the side view of Embodiment 2 of the laminated body of this invention.
  • FIG. 3 shows an example of the side view of Embodiment 3 of the laminated body of this invention.
  • FIG. 4 shows an example of the side view of Embodiment 4 of the laminated body of this invention.
  • FIG. 5 shows an example of the side view of Embodiment 5 of the laminated body of this invention.
  • FIG. 6 shows an example of the side view of Embodiment 6 of the laminated body of this invention.
  • FIG. 7 shows an example of the side view of Embodiment 7 of the laminated body of this invention.
  • FIG. 1 shows an example of the side view of Embodiment 1 of the laminated body of this invention.
  • FIG. 2 shows an example of the side view of Embodiment 2 of the laminated body of this invention.
  • FIG. 3 shows an example of the side view of
  • FIG. 8 shows an example of the side view of Embodiment 8 of the laminated body of this invention.
  • FIG. 9 shows an example of the side view of Embodiment 9 of the laminated body of this invention.
  • FIG. 10 shows an example of the side view of Embodiment 10 of the laminated body of this invention.
  • FIG. 11 shows an example of the laminated surface of the laminate of the present invention.
  • FIG. 12 shows an example of the laminate surface of the laminate of the present invention.
  • FIG. 13 shows an example of the laminate surface of the laminate of the present invention.
  • FIG. 14 shows an example of the laminated surface of the laminate of the present invention.
  • FIG. 15 shows an example of a side view of a conventional laminate.
  • the laminate of the present invention is obtained by laminating a plurality of members containing glass as an essential member with an adhesive, and has a chamfered portion at least at the end of the laminated surface of the glass.
  • the hatched portion indicates the adhesive
  • the dot portion indicates the chamfered portion
  • the dotted line portion indicates the endmost portion of the laminated surface.
  • the laminated surface refers to a surface to which glass and a member are bonded.
  • adheres to the outer side outside the dotted line part or the side wall surface of the member and the glass from the end of the laminated surface.
  • the laminate of the present invention is composed of two or more members, and at least one of the members is glass.
  • the glass composition is not particularly limited, borosilicate glass, aluminosilicate glass, alkali-free glass, fluorophosphate glass, phosphate glass, quartz glass, or the like may be used.
  • the thickness, size, and shape of the glass are not particularly limited. Glass with a functional film (for example, antireflection film, reflection film, infrared cut / transmitt film, UV cut / transmit film, antifouling / dustproof film, etc.), colored from the outside, or fine processing What processed suitably according to a use, such as a thing, may be used.
  • a functional film for example, antireflection film, reflection film, infrared cut / transmitt film, UV cut / transmit film, antifouling / dustproof film, etc.
  • the member constituting the laminate of the present invention may be made of resin, metal, ceramic, sapphire, film, fiber material, crystal, etc. in addition to glass.
  • it is used as an optical device, prism, biofilm, culture substrate, heat insulating material, electric circuit and the like.
  • glass and another member are bonded by an adhesive.
  • the adhesive is not particularly limited as long as it can adhere and adhere to the glass so as not to peel off the member, UV curable resin, acrylic adhesive, silicon adhesive, urethane adhesive, polyamide adhesive, acetic acid Vinyl adhesives, ester adhesives, styrene adhesives, cyanoacrylate adhesives, PVA adhesives, PP adhesives, PC adhesives, PET adhesives, PMMA adhesives, PES adhesives
  • PEN adhesives cellulose adhesives, silane coupling adhesives, epoxy adhesives, and the like can be used as appropriate.
  • the state of the adhesive can be selected as appropriate, such as liquid, gel, solid, tape, and sheet, but in order to increase the adhesion between members, a liquid or gel is preferable.
  • the laminated surface includes a chamfered end portion (hereinafter referred to as a chamfered portion) and a portion to which an adhesive is applied (hereinafter referred to as an adhesive portion).
  • a chamfered portion By having the chamfered portion, it is possible to prevent the adhesive from sticking to the outside of the end portion of the member when the adhesive adheres to the chamfered portion and the adhesive spreads when bonded with an adhesive.
  • the position where the chamfered portion is located may be the entire periphery of the end portion of the laminated surface or may be partial, but it is preferable that the end portion outside the position where the adhesive is applied is a chamfered portion.
  • the shape of the chamfered portion is not particularly limited, but can be appropriately selected from R chamfering, C chamfering, inclined surface, and the like. When selecting, it is preferable to select a shape in which the chamfered portion does not affect the usage.
  • the chamfered range (hereinafter referred to as a chamfered area) can be appropriately adjusted in accordance with the use application, the type of adhesive, and the like in both the planar direction and the thickness direction. When the viscosity of the adhesive is low (easy to flow) or when it is necessary to apply a large amount of adhesive, the chamfer lengths in the planar direction and the thickness direction are increased.
  • the chamfer length in the thickness direction may be the same length as the thickness. If the chamfer length in the thickness direction and the length of the thickness are the same, depending on the inclination angle and chamfering position, the adhesive part becomes smaller, the angle becomes steep, etc., and it becomes disadvantageous such that the adhesive tends to flow down. Since there is a possibility, it is preferable to appropriately adjust the chamfering length and angle.
  • the upper and lower surfaces of the glass are laminated surfaces, so that chamfered portions are formed at both ends.
  • the shape and location of the chamfered portion may be the same on the upper and lower surfaces, or may be different. It is preferable to adjust appropriately according to the number of stacked layers and the combination of members.
  • the member other than glass may have a chamfered portion.
  • the chamfered shape can be appropriately selected from R chamfering, C chamfering, inclined surface, etc., and the volume and inclination angle of the chamfered area can be appropriately adjusted according to the use application and the type of adhesive. Is possible.
  • the surface roughness of the bonded portion of the laminated surface of the glass is smaller than the surface roughness of the chamfered portion, that is, the surface of the bonded portion is smoother than the chamfered portion (the chamfered portion of the chamfered portion). It is preferable that the surface is rougher than the bonded portion.
  • the value of the surface roughness is not limited, for example, the surface roughness (Ra) of the chamfered portion is preferably 0.15 to 0.5 ⁇ m, and the surface roughness (Ra) of the bonded portion is preferably less than 0.15 ⁇ m.
  • the surface roughness (Ra) is an arithmetic average roughness Ra described in Japanese Industrial Standard JISB0601 (revised in 2013).
  • the laminate of the present invention is produced by bonding two or more members with an adhesive.
  • Chamfering is performed at the end of the surface to be the laminated surface to form a chamfered portion.
  • a method for forming the chamfered portion can be appropriately selected from means such as polishing, etching, laser processing, grinding, cutting, and pressing. It is preferable to select in consideration of the physical properties and thickness of the member, a desired inclination angle, and a processing width.
  • Adhesive is used for bonding the members.
  • the type of adhesive can be appropriately selected from those described above.
  • a method suitable for the state of the adhesive and the range where the adhesive is applied may be selected. For example, by printing paste-like or frit-like adhesives, applying adhesives using applicators or devices, and sticking if they are seal-like or sheet-like adhesives, etc. is there. Note that in this specification, an aspect in which a paste or frit-like adhesive is printed and an aspect in which a seal-like or sheet-like adhesive is attached are also included in the application of the adhesive. Moreover, in order to improve adhesiveness, you may perform processes, such as applying force (for example, putting weight, pinching with an instrument etc.), and applying heat.
  • the adhesive it is preferable to apply to the adhesive part other than the position where the chamfered part is formed on the laminated surface.
  • An example of the coating method is shown in FIGS.
  • the adhesive may be applied only to the inside of the portion where the chamfered portion is formed, the adhesive may be applied only to a part of the inside of the portion where the chamfered portion is formed, or may be applied to the entire laminated surface. .
  • Embodiments 1 to 10 of the present invention are shown below. It should be noted that changing the chamfering shape, angle, and width of the following embodiments, or combining the plurality of embodiments, can be appropriately adjusted within the scope described in this specification.
  • Embodiments 1 and 2 have a chamfered portion 22 at the end of the laminated surface 21 of the glass 2 as shown in FIGS.
  • the shape of the chamfered portion 21 was a C chamfer.
  • Embodiment 3 has chamfered portions 22 and 32 at both the end of the laminated surface 21 of the glass 2 and the end of the laminated surface 31 of the member 3 as shown in FIG. Both of the chamfered portions 22 and 32 are C chamfered.
  • Embodiments 4 and 5 have a chamfered portion 22 at the end of the laminated surface 21 of the glass 2 as shown in FIGS.
  • the shape of the chamfered portion 21 was inclined toward the entire thickness direction.
  • Embodiment 6 has chamfered portions 22 and 32 at both the end of the laminated surface 21 of the glass 2 and the end of the laminated surface 31 of the member 3 as shown in FIG. Both the chamfered portions 22 and 32 are inclined toward the entire thickness direction.
  • the shape of the chamfered portion 22 at the end of the laminated surface 21 of the glass 2 is different from the shape of the chamfered portion 32 at the end of the laminated surface 31 of the member 3. .
  • the shape of the chamfered portion 22 is a C chamfer, and the shape of the chamfered portion 32 is an inclined shape in the entire thickness direction.
  • the size of the laminated surface 21 of the glass 2 is smaller than the size of the laminated surface 31 of the member 3.
  • the chamfered portion was formed only on the glass 2 and the chamfered portion 22 was C chamfered.
  • Embodiment 9 has different thicknesses of the glass 2 and the member 3 as shown in FIG. Except for the difference in thickness, it is equivalent to the first embodiment.
  • Embodiment 10 is an example in which members 3 and 3 ′ are bonded to the upper and lower sides of glass 2 as shown in FIG. 10. Both the laminated surfaces 21 and 21 ′ of the glass 2 have chamfered portions 22, and the chamfered portions 22 and 22 ′ are C chamfered.
  • the laminate of the present invention is extremely useful for applications such as solid-state imaging devices, optical devices, carrier glass, display-related members, casings of electronic devices, solar cells, and laminated glass for windows.
  • Laminate 2 Glass 21. Laminated glass surface 22. Glass chamfer 23. 2. Glass adhesion part Member (including glass) 31. Member lamination surface 32. Member chamfer 33. 3. Adhesive part of member adhesive

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Abstract

本発明は、少なくともガラスを含む複数の部材を接着剤によって接着した積層体であって、接着された前記ガラスの積層面の端部に面取り部を有し、且つ前記面取り部に前記接着剤が付着していることを特徴とする積層体に関する。本発明の積層体によれば、接着剤がガラス及び部材の側面に付着するまでにはみ出すことなく、且つ各部材の特性や使用用途にも影響を与えない。

Description

積層体及びその製造方法
　本発明は、ガラスを含む複数の部材を接着剤によって接着した積層体及びその製造方法に関する。
　ガラスを含む部材同士を接着剤で合わせた積層体が特許文献１及び２に開示されている。特許文献１においては、ディスプレイ等に用いるガラス積層体が提案されている。複数の反射膜付きのガラスフィルムに対し、間に接着剤を介在させることで一体化し、ガラス積層体を形成している。特許文献１では接着剤の貼り付け方を工夫することにより、接着層中の気泡防止や接着層の肉厚差の低減を実現している。特許文献２においては、ガラス積層体中に近赤外吸収ガラスを用いたり、接着剤に赤外線吸収機能を有するものを用いたりすることで実現した、赤外線吸収機能に優れたガラス積層体が提案されている。
日本国特開２０１５－１８７０６５号公報 日本国特開２０１７－１４０４２号公報
　しかし、ガラスを含む部材を接着剤で接着する場合、貼り合せの際に接着剤が部材の端部からはみ出すことがある（図１５参照）。接着剤がはみ出すことで、使用時にはみ出した接着剤によってガラスの特性や物性が変化し、使用用途に影響を及ぼすおそれがある。はみ出した接着剤を取り除く工程を設けることも可能ではあるが、次工程への影響や製造コストの問題などが生じるおそれがある。また、はみ出しを防止するために、接着剤の量を減らす、端部から離れた位置に接着剤を塗るなどの方法もあるが、その場合、接着剤が端部まで十分に行き渡らず、端部から剥がれが生じやすくなるなど、接着力低下のおそれがある。接着力を向上させる、剥がれを生じにくくする、という点を考慮すると端部までは接着剤が行き渡ることが好ましい。
　本発明は、接着剤がガラスの側面に付着するようなはみ出しを防止し且つ使用用途に影響を及ぼさない積層体及びその製造方法の提供を目的とする。
　本発明者は、鋭意検討を重ねた結果、積層された部材のうち少なくとも一方がガラスである積層体において、少なくともガラスの積層面が、端部に面取り部を有した積層体であれば、上記課題を解決できることを見出した。
　本発明の積層体は、少なくともガラスを含む複数の部材を接着剤によって接着した積層体であって、接着された前記ガラスの積層面の端部に面取り部を有し、且つ前記面取り部に前記接着剤が付着していることを特徴とする。
　本発明の積層体は、前記接着剤がＵＶ硬化樹脂、アクリル系接着剤、シリコン系接着剤、ウレタン系接着剤、ポリアミド系接着剤、酢酸ビニル系接着剤、エステル系接着剤、スチレン系接着剤、シアノアクリレート系接着剤、ＰＶＡ系接着剤、ＰＰ系接着剤、ＰＣ系接着剤、ＰＥＴ系接着剤、ＰＭＭＡ系接着剤、ＰＥＳ系接着剤、ＰＥＮ系接着剤、セルロース系接着剤、シランカップリング系接着剤及びエポキシ系接着剤からなる群より選択される少なくとも１種であることを特徴とする。
　本発明の積層体は、前記積層面の接着部の表面粗さが前記面取り部の表面粗さより小さいことを特徴とする。
　本発明の積層体の製造方法は、少なくともガラスを含む複数の部材を接着剤によって接着した積層体の製造方法であって、前記ガラスの積層面の端部を面取り加工して面取り部を形成する工程と、前記複数の部材の少なくとも一方の積層面の接着部に前記接着剤を塗布する工程と、前記複数の部材を前記接着剤によって接着し、前記接着剤を前記面取り部に付着する工程と、を備えることを特徴とする。
　本発明によれば、接着剤がガラス及び部材の側面に付着するまでにはみ出すことなく、且つ各部材の特性や使用用途にも影響を与えない積層体を得ることができる。
図１は、本発明の積層体の実施形態１の側面図の一例を示す。 図２は、本発明の積層体の実施形態２の側面図の一例を示す。 図３は、本発明の積層体の実施形態３の側面図の一例を示す。 図４は、本発明の積層体の実施形態４の側面図の一例を示す。 図５は、本発明の積層体の実施形態５の側面図の一例を示す。 図６は、本発明の積層体の実施形態６の側面図の一例を示す。 図７は、本発明の積層体の実施形態７の側面図の一例を示す。 図８は、本発明の積層体の実施形態８の側面図の一例を示す。 図９は、本発明の積層体の実施形態９の側面図の一例を示す。 図１０は、本発明の積層体の実施形態１０の側面図の一例を示す。 図１１は、本発明の積層体の積層面の一例を示す。 図１２は、本発明の積層体の積層面の一例を示す。 図１３は、本発明の積層体の積層面の一例を示す。 図１４は、本発明の積層体の積層面の一例を示す。 図１５は、従来の積層体の側面図の一例を示す。
　本発明の積層体は、ガラスを必須の部材として含む複数の部材を接着剤で接着して積層されたものであって、少なくともガラスの積層面の端部に面取り部を有する。
　本図面においては、斜線部が接着剤を示し、ドット部が面取り部を示し、点線部が積層面の最端部を示す。本明細書において、積層面とは、ガラス及び部材が接着される面を指す。また、「接着剤がはみ出す」とは、積層面の最端部から外側（点線部より外側や、部材及びガラスの側壁面）に接着剤が付着することを指す。
　本発明の積層体は２つ以上の部材で構成され、部材の少なくとも１つはガラスとする。ガラス組成は特に限定しないが、ホウケイ酸ガラス、アルミノシリケートガラス、無アルカリガラス、フツ燐酸ガラス、燐酸ガラス、石英ガラスなどを用いてもよい。また、ガラスの厚みや大きさ、形状も特に限定しない。ガラスは機能膜（例えば、反射防止膜や、反射膜、赤外線カット／透過膜、紫外線カット／透過膜、防汚・防塵膜等）をつけたものや外面から着色したもの、微細加工を施したものなど、用途に応じて適した加工をしたものを用いてもよい。ガラスを複数用いる場合は、すべて同じガラスでもよく、異なるガラスであってもよい。
　本発明の積層体を構成する部材は、ガラス以外に、樹脂、金属、セラミック、サファイア、フィルム、繊維材料、水晶等を用いてもよい。部材の用途でいえば、光学デバイス、プリズム、バイオフィルム、培養基材、断熱材、電気回路等として使われる。
　本発明の積層体は、接着剤によってガラスと他の部材（ガラスであってもよい）が接着されている。接着剤はガラスと部材を剥がれないように密着して接着できるものであれば特に限定されず、ＵＶ硬化樹脂、アクリル系接着剤、シリコン系接着剤、ウレタン系接着剤、ポリアミド系接着剤、酢酸ビニル系接着剤、エステル系接着剤、スチレン系接着剤、シアノアクリレート系接着剤、ＰＶＡ系接着剤、ＰＰ系接着剤、ＰＣ系接着剤、ＰＥＴ系接着剤、ＰＭＭＡ系接着剤、ＰＥＳ系接着剤、ＰＥＮ系接着剤、セルロース系接着剤、シランカップリング系接着剤、エポキシ系接着剤などから選択される１種または２種以上を適宜用いることができる。
　接着剤の状態は、液状、ジェル状、固形状、テープ状、シート状など適宜選択できるが、部材同士の密着力を高めるうえでは、液状やジェル状のものが好ましい。
　本発明の積層体を構成する部材のうち、少なくともガラスにおいて、積層面は、面取り加工された端部（以下、面取り部という）と、接着剤をつける部分（以下、接着部という）を含む。面取り部を有することで、接着剤で接着した時に、面取り部には接着剤が付着し、また接着剤が広がった場合に、部材の端部より外側に接着剤がはみ出すことを防止できる。面取り部のある位置は、積層面の端部全周でもよく、部分的でもよいが、接着剤を塗る位置の外側の端部は面取り部となっていることが好ましい。
　面取り部の形状は特に限定されないが、Ｒ面取り、Ｃ面取り、傾斜面等から適宜選択できる。選択する際は、面取り部が使用用途において影響を及ぼさない形状を選択することが好ましい。また、面取りした範囲（以下、面取り域という）は、面取りした長さ（以下、面取り長さ）が平面方向、厚み方向共に、使用用途や接着剤の種類等に応じて適宜調整可能である。接着剤の粘度が低い（流れやすい）場合や、接着剤を多く塗布する必要がある場合は、平面方向及び厚み方向の面取り長さを大きくする。これにより、面取り域の容積を大きくすることができるため、接着剤が多く広がったとしてもはみ出しの抑制がしやすくなる。厚み方向の面取り長さは、厚みと同じ長さであってもよい。厚み方向の面取り長さと厚みの長さを同じにした場合、傾斜角度や面取り形成位置によっては接着部が小さくなる、角度が急になるなどして接着剤が流れ落ちやすくなるなど不利な状態になる可能性もあるため、面取りする長さや角度を適宜調整することが好ましい。
　例えば、ガラスの上下に別部材を積層する、つまり３層以上の構造とする場合は、ガラスの上下面が積層面となるため、双方の端部に面取り部を形成する。面取り部の形状や形成する場所は上下面共に同じでもよく、異なっていてもよい。積み重ねの層数や部材の組合せに合わせて、適宜調整することが好ましい。
　ガラス以外の部材においても、面取り部を有していてもよい。面取り形状等は前記したガラスの場合と同様に、Ｒ面取り、Ｃ面取り、傾斜面等から適宜選択でき、面取り域の容積や傾斜角度等も、使用用途や接着剤の種類等に応じて適宜調整可能である。
　本発明の積層体は、ガラスの積層面の接着部の表面粗さが、面取り部の表面粗さより小さくなっていること、つまり接着部の方が面取り部より表面が滑らかな状態（面取り部の方が接着部より表面が粗い状態）であることが好ましい。接着部は表面を滑らかにすることで、部材同士の密着性が上がり、より剥がれにくくなる。また、面取り部は表面を粗くすることで、接着剤が端部の最も外側方向へ流れるのを抑制することができる。表面粗さの値は限定されないが、たとえば面取り部の表面粗さ（Ｒａ）は０．１５～０．５μｍが好ましく、接着部の表面粗さ（Ｒａ）は０．１５μｍ未満が好ましい。表面粗さ（Ｒａ）は、日本工業規格のＪＩＳＢ０６０１（２０１３年改正）に記載の算術平均粗さＲａである。
　次に、本発明の積層体の製造方法について説明する。本発明の積層体は、前記したように、２つ以上の部材を接着剤で接着することで製造される。
　積層面となる面の端部には面取り加工を行い、面取り部を形成する。面取り部の形成方法としては、研磨、エッチング、レーザー加工、研削、切削加工、プレス等の手段から適宜選択できる。部材の物性や厚み、所望の傾斜角度、加工する幅を考慮した上で選択することが好ましい。
　部材の接着においては、接着剤を用いる。接着剤の種類においては上記したものから適宜選択可能である。また、塗布方法については、接着剤の状態や接着剤を塗る範囲によって適した方法を選択すればよい。例えば、ペースト状やフリット状の接着剤を印刷すること、塗布用の器具や装置を用いて接着剤を塗布すること、シール状やシート状の接着剤で有れば貼り付けを行うこと等である。なお、本明細書においては、ペーストやフリット状の接着剤を印刷する態様や、シール状やシート状の接着剤を貼り付けする態様も、接着剤を塗布することに包含されるものとする。また、接着性を向上させるために、力をかける（例えば重しを載せる、器具で挟み込む等）、熱をかける等の処理を行ってもよい。
　接着剤の塗布範囲については、積層面において面取り部を形成した位置以外の接着部に塗布することが好ましい。塗布方法の一例については図１１～１４に示した。面取り部を形成した部分の内側のみに接着剤を塗布してもよく、面取り部を形成した部分の内側の一部のみに接着剤を塗布してもよく、積層面全体に塗布してもよい。
　以下に、本発明の実施形態１～１０を示す。なお、以下の実施形態の面取り形状、角度及び幅を変更したり、複数の実施形態を組み合わせた形態にしたりすることは、本明細書記載の範囲において適宜調整可能である。
　実施形態１及び２は、図１及び２に示したように、ガラス２の積層面２１の端部に面取り部２２を有するものである。面取り部２１の形状はＣ面取りとした。
　実施形態３は、図３に示したように、ガラス２の積層面２１の端部、及び部材３の積層面３１の端部の両方に面取り部２２、３２を有する。面取り部２２、３２の形状は共にＣ面取りとした。
　実施形態４及び５は、図４及び５に示したように、ガラス２の積層面２１の端部に面取り部２２を有するものである。面取り部２１の形状は、厚み方向全体への傾斜形状とした。
　実施形態６は、図６に示したように、ガラス２の積層面２１の端部、及び部材３の積層面３１の端部の両方に面取り部２２、３２を有する。面取り部２２、３２の形状は共に厚み方向全体への傾斜形状とした。
　実施形態７は、図７に示したように、ガラス２の積層面２１の端部の面取り部２２の形状と、部材３の積層面３１の端部の面取り部３２の形状が異なるものである。実施形態７の場合は、面取り部２２の形状をＣ面取り、面取り部３２の形状を厚み方向全体への傾斜形状とした。
　実施形態８は、図８に示したように、ガラス２の積層面２１の大きさが部材３の積層面３１の大きさよりも小さいものである。実施形態８の場合は、面取り部はガラス２のみに形成し、面取り部２２はＣ面取りとした。
　実施形態９は、図９に示したように、ガラス２の厚みと部材３の厚みが異なるものである。厚みが異なる以外は実施形態１と同等である。
　実施形態１０は、図１０に示したように、ガラス２の上下に部材３及び３´を接着したものの一例である。ガラス２の積層面２１及び２１´の双方に、面取り部２２を有するものであり、面取り部２２及び２２´はＣ面取りとした。
　本発明を詳細にまた特定の実施態様を参照して説明したが、本発明の精神と範囲を逸脱することなく様々な変更や修正を加えることができることは、当業者にとって明らかである。
　本出願は、２０１７年４月２１日出願の日本国特許出願（特願２０１７-０８４７２４）に基づくものであり、その内容はここに参照として取り込まれる。
　本発明の積層体は、固体撮像素子、光学素子、キャリアガラス、ディスプレイ関連部材、電子機器の筐体、太陽電池、窓用の合わせガラス等の用途に極めて有用である。
１．積層体
２．ガラス
２１．ガラスの積層面
２２．ガラスの面取り部
２３．ガラスの接着部
３．部材（ガラスを含む）
３１．部材の積層面
３２．部材の面取り部
３３．部材の接着部
４．接着剤

Claims (4)

  1. 　少なくともガラスを含む複数の部材を接着剤によって接着した積層体であって、
    　接着された前記ガラスの積層面の端部に面取り部を有し、且つ前記面取り部に前記接着剤が付着している積層体。
  2. 　前記接着剤がＵＶ硬化樹脂、アクリル系接着剤、シリコン系接着剤、ウレタン系接着剤、ポリアミド系接着剤、酢酸ビニル系接着剤、エステル系接着剤、スチレン系接着剤、シアノアクリレート系接着剤、ＰＶＡ系接着剤、ＰＰ系接着剤、ＰＣ系接着剤、ＰＥＴ系接着剤、ＰＭＭＡ系接着剤、ＰＥＳ系接着剤、ＰＥＮ系接着剤、セルロース系接着剤、シランカップリング系接着剤及びエポキシ系接着剤からなる群より選択される少なくとも１種である請求項１に記載の積層体。
  3. 　前記積層面の接着部の表面粗さが前記面取り部の表面粗さより小さい請求項１又は２に記載の積層体。
  4. 　少なくともガラスを含む複数の部材を接着剤によって接着した積層体の製造方法であって、
    　前記ガラスの積層面の端部を面取り加工して面取り部を形成する工程と、前記複数の部材の少なくとも一方の積層面の接着部に前記接着剤を塗布する工程と、前記複数の部材を前記接着剤によって接着し、前記接着剤を前記面取り部に付着する工程と、を備える積層体の製造方法。
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CN109184138A (zh) * 2018-11-08 2019-01-11 浙江世友木业有限公司 一种自粘结实木地板及其生产方法
CN109184138B (zh) * 2018-11-08 2024-01-23 浙江世友木业有限公司 一种自粘结实木地板及其生产方法

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