JP3413401B2 - Removable laminate and method for removing the same - Google Patents
Removable laminate and method for removing the sameInfo
- Publication number
- JP3413401B2 JP3413401B2 JP2000323255A JP2000323255A JP3413401B2 JP 3413401 B2 JP3413401 B2 JP 3413401B2 JP 2000323255 A JP2000323255 A JP 2000323255A JP 2000323255 A JP2000323255 A JP 2000323255A JP 3413401 B2 JP3413401 B2 JP 3413401B2
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- peeling
- polymer
- metal plate
- decorative metal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 26
- 239000000853 adhesive Substances 0.000 claims description 149
- 230000001070 adhesive effect Effects 0.000 claims description 149
- 229910052751 metal Inorganic materials 0.000 claims description 86
- 239000002184 metal Substances 0.000 claims description 86
- 229920000642 polymer Polymers 0.000 claims description 49
- 239000000463 material Substances 0.000 claims description 45
- 239000000839 emulsion Substances 0.000 claims description 37
- 239000002245 particle Substances 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 29
- 239000010419 fine particle Substances 0.000 claims description 23
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 16
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 16
- 239000004814 polyurethane Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- 229920002635 polyurethane Polymers 0.000 claims description 15
- 125000000129 anionic group Chemical group 0.000 claims description 14
- 239000006185 dispersion Substances 0.000 claims description 14
- 238000005187 foaming Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 12
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000011118 polyvinyl acetate Substances 0.000 claims description 5
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 5
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 31
- 229920001577 copolymer Polymers 0.000 description 13
- 230000000694 effects Effects 0.000 description 13
- 239000010440 gypsum Substances 0.000 description 13
- 229910052602 gypsum Inorganic materials 0.000 description 13
- 238000004064 recycling Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 238000002156 mixing Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000004593 Epoxy Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 239000011120 plywood Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000004566 building material Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000002269 spontaneous effect Effects 0.000 description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 238000007718 adhesive strength test Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920005573 silicon-containing polymer Polymers 0.000 description 3
- 125000000542 sulfonic acid group Chemical group 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical group CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000003094 microcapsule Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920000728 polyester Chemical group 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 2
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 239000004821 Contact adhesive Substances 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- CYKDLUMZOVATFT-UHFFFAOYSA-N ethenyl acetate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=O)OC=C CYKDLUMZOVATFT-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000007970 homogeneous dispersion Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 150000001282 organosilanes Chemical group 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- -1 polyoxypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 150000008054 sulfonate salts Chemical class 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Adhesives Or Adhesive Processes (AREA)
- Processing Of Solid Wastes (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、表面材、特にカラ
ー塗装金属板あるいは燐酸塩処理や陽極酸化処理した金
属板などである化粧金属板と基材、特に多孔質ボードを
接着してなる再剥離可能な積層体、特に接着パネルと、
該積層体の再剥離によるリサイクル方法に関する。特に
化粧金属板と多孔質ボードの接着による接着パネルにお
いて、接着パネルとして使用時は品質性能を維持し、接
着不良による再剥離作業や将来のリサイクルのための再
剥離作業に優れた再剥離性を備えた接着パネル、及び、
再剥離方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface material, particularly a color-coated metal sheet or a decorative metal sheet such as a phosphate-treated or anodized metal sheet, and a base material, particularly a porous board. A peelable laminate, especially an adhesive panel,
The present invention relates to a recycling method by re-peeling the laminate. In particular, in the case of an adhesive panel made by adhering a decorative metal plate and a porous board, quality performance is maintained when used as an adhesive panel, and excellent removability is provided for re-peeling work due to poor adhesion and re-peeling work for future recycling. An adhesive panel provided, and
The present invention relates to a re-peeling method.
【０００２】[0002]
【従来技術】従来から積層体、特に化粧金属板と多孔質
ボードからなる接着パネルは、オフィス、マンション、
住宅などの建材、住宅機器あるいは車両などの分野で広
く用いられている。これらは、カラー塗装した鋼板やそ
の他の金属板、あるいは、燐酸塩処理した鋼板や陽極酸
化処理したアルミニウム板やその他の表面処理した金属
板など（本明細書では、これらを総称して「化粧金属
板」という。）と石膏ボードなどの多孔質ボードを水性
接着剤組成物で貼着するオーバーレイ加工した接着パネ
ル自体、あるいはそれらを組立加工したものからなって
いる。2. Description of the Related Art Conventionally, a laminated body, particularly an adhesive panel composed of a decorative metal plate and a porous board has been used in offices, condominiums,
It is widely used in the fields of building materials such as houses, housing equipment and vehicles. These are color-coated steel plates and other metal plates, or phosphate-treated steel plates, anodized aluminum plates, and other surface-treated metal plates (in the present specification, these are collectively referred to as “decorative metal”). Plate)) and a porous board such as a gypsum board, which is pasted with an aqueous adhesive composition to form an overlay-processed adhesive panel itself, or an assembly process thereof.
【０００３】ところで、オフィス、マンション、住宅な
どの建材、住宅機器、車両などはリフォームや解体作業
を行う場合、これらの接着パネル自体、あるいはそれら
を組立加工したものは多量の産業廃棄物として環境に放
出されることとなり、従来から深刻な社会問題の一因と
なっている。とりわけ接着パネルから化粧金属板を再剥
離することなく一括処理する場合は、リサイクルするこ
とも適わず、一層に環境を破壊する恐れがある。By the way, when building materials such as offices, condominiums, houses, housing equipment, vehicles, etc. are subjected to remodeling and dismantling work, these adhesive panels themselves or those assembled and processed are environmentally hazardous as a large amount of industrial waste. It will be released and has been a cause of serious social problems. In particular, when collectively treating the decorative metal plate from the adhesive panel without removing it again, recycling is not suitable, and there is a possibility that the environment will be further damaged.
【０００４】そこで予めリサイクルを考えて再剥離しや
すいように、木材同士の接着で使用される例えば特開昭
５６−６１４６８号公報に示される接着剤であるアクリ
ル系粘着剤のような、弱接着材料により化粧金属板を貼
り合わせた化粧板では、建材や住宅機器などとして日常
の使用時に剥がれや浮きを生じ易く、耐久性が要求され
る住宅や車両などの材料に使用することは根本的に問題
であった。すなわち、接着製品である接着パネルは使用
時においては安心して使用できる基本性能を有しなけれ
ばならず、不要時にはできるだけ簡単に材料の破壊を伴
わずに再剥離できるものでなければならない。そして材
料の破壊を伴わずに簡単に再剥離できるならば、資源と
してリサイクルして再利用できる利点を生ずる。Therefore, in consideration of recycling in advance, weak adhesion such as an acrylic pressure-sensitive adhesive which is an adhesive used in the adhesion of woods to each other is disclosed in JP-A-56-61468 so that it can be easily peeled off again. A decorative plate made by laminating decorative metal plates depending on the material is apt to peel off or float during daily use as a building material or housing equipment, and is basically used for materials such as houses and vehicles that require durability. It was a problem. That is, the adhesive panel, which is an adhesive product, must have the basic performance that can be used with peace of mind when it is used, and when it is unnecessary, it must be able to be re-peeled as easily as possible without breaking the material. And if it can be easily peeled off without destroying the material, there is an advantage that it can be recycled and reused as a resource.
【０００５】しかし、残念ながら必要時にその要求され
る品質・性能を与え、不要時に極めて簡単に再剥離でき
るような都合の良い接着パネル、及び、簡単に再剥離す
る方法は、いまだ見当たらないのが現状である。However, unfortunately, a convenient adhesive panel that can provide the required quality and performance when needed and can be re-peeled extremely easily when not needed, and a method of easily re-peeling have not been found yet. The current situation.
【０００６】[0006]
【発明が解決しようとする課題】本発明の課題は、積層
体すなわち接着パネルなど一旦接着させた接着製品にお
いて、将来の再剥離などのリサイクル技術まで踏み込ん
で考慮した積層体すなわち接着パネルを開発し、この積
層体を将来簡単に再剥離する剥離方法を提供することで
ある。この再剥離する剥離方法は簡単であればあるほど
よい。SUMMARY OF THE INVENTION An object of the present invention is to develop a laminated product, that is, an adhesive panel, in which an adhesive product such as a laminated product, that is, an adhesive panel, which has been once adhered, takes into consideration recycling technology such as future peeling. It is an object of the present invention to provide a peeling method for easily repeeling this laminate in the future. It is better that the peeling method for this peeling is simpler.
【０００７】積層体である接着パネルは、化粧金属板の
接着する側の面（接着面）がエポキシコート、塩ビコー
トなどポリマー系塗料でコーティングされたカラー塗装
した鋼板、その他の表面処理した金属板、すなわち燐酸
塩処理した鋼板や陽極酸化処理したアルミニウム板であ
る。これらは難接着材料であるために基材である多孔質
ボードに接着剤により基本的によく接着していなければ
ならない。The adhesive panel, which is a laminate, is a color-painted steel plate in which the surface (adhesive surface) of the decorative metal plate to be bonded (adhesive surface) is coated with a polymer-based paint such as epoxy coat or vinyl chloride coat, and other surface-treated metal plates. That is, a phosphate-treated steel plate or an anodized aluminum plate. Since these are difficult-to-adhere materials, they must basically adhere well to the porous board that is the base material with an adhesive.
【０００８】これらの積層体である接着パネルは、建
材、住宅機器などに使用されることから、耐水性、耐熱
性など業界の品質要求試験に合格する性能水準を発現す
る接着剤でなければならない。Since the adhesive panel which is a laminate of these is used for building materials, housing equipment, etc., it must be an adhesive that exhibits performance levels that pass industry quality requirement tests such as water resistance and heat resistance. .
【０００９】さらに積層体である接着パネルは、接着製
品として使用しているときには十分な接着状態、接着性
能を持続していることが必要で、リサイクルするときに
は表面材の化粧金属板と基材の多孔質ボードが自然剥離
した状態にあるか、表面材の化粧金属板のみを手で容易
に剥離できる程度の剥離容易性を具備することが必要で
ある。従って、この積層体である接着パネルを簡単に剥
離する方法を開発し、最終目標は、短時間で自然剥離し
てしまう優れた技術的手段を開発することが課題であ
る。Further, the adhesive panel, which is a laminate, needs to maintain a sufficient adhesive state and adhesive performance when it is used as an adhesive product, and when it is recycled, it is made up of a decorative metal plate as a surface material and a base material . It is necessary for the porous board to be in a state of being naturally peeled off, or for the peeling to be such that only the decorative metal plate of the surface material can be peeled off easily by hand. Therefore, it is an object to develop a method for easily peeling the adhesive panel which is the laminated body, and to develop an excellent technical means for spontaneous peeling in a short time as a final goal.
【００１０】[0010]
【課題を解決するための手段】本発明者らは、接着剤の
開発と再剥離手段の開発を志した。まず接着剤におい
て、熱膨張性微粒中空体、すなわち熱膨張性マイクロカ
プセルをエマルジョン系接着剤に配合する研究を開始し
た。これら熱膨張性微粒中空体は加熱発泡性を利用した
工業材料に広く使用されている。Means for Solving the Problems The inventors of the present invention aimed to develop an adhesive and a re-peeling means. First, for adhesives, we began research on blending thermally expandable fine hollow particles, that is, thermally expandable microcapsules, into emulsion adhesives. These thermally expandable fine hollow particles are widely used in industrial materials that utilize the heat-foaming property.
【００１１】包装ラベルなどで、アクリル系粘着剤のよ
うな感圧型接着剤に、熱膨張性微粒中空体などの発泡材
料を配合し、再剥離機能を与える試みが古くからある
が、感圧型接着剤に熱膨張性微粒中空体を配合し、積層
体である接着パネルを製造すれば、耐熱性に欠けるの
で、使用段階で表面材である化粧金属板の浮き、剥がれ
を生じる。このため低品質の接着パネルしか得られな
い。従って、耐水性、耐熱性など業界の品質要求試験に
到底適うものではない。耐久性を重視するため、熱硬化
性樹脂などのリジッドな接着剤に、熱膨張性微粒中空体
を配合すれば、熱膨張性微粒中空体自体の熱膨張性が阻
害されて再剥離性を与えることが困難になる。もっとも
熱硬化性樹脂などのリジッドな接着剤は、難接着性を示
す化粧金属板における接着面への接着性が乏しいことも
接着剤を選定する上での障害となる。For packaging labels and the like, there has been an attempt to give a re-peeling function by blending a pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive with a foam material such as a heat-expandable fine particle hollow body. If a heat-expandable fine particle hollow body is mixed with the agent to produce an adhesive panel that is a laminate, heat resistance is lacking, so that the decorative metal plate that is the surface material floats or peels off at the stage of use. Therefore, only low quality adhesive panels can be obtained. Therefore, it is completely unsuitable for quality required tests in the industry such as water resistance and heat resistance. To emphasize durability, if a thermosetting resin or other rigid adhesive is mixed with a heat-expandable fine particle hollow body, the heat expandability of the heat-expandable fine particle hollow body itself is impaired and removability is imparted. Becomes difficult. However, a rigid adhesive such as a thermosetting resin has a poor adhesiveness to a bonding surface of a decorative metal plate having poor adhesiveness, which is an obstacle in selecting an adhesive.
【００１２】さらに、熱膨張性微粒中空体を水性接着剤
に配合した場合、熱膨張性微粒中空体の吸水性に基づ
き、本来その接着剤が有していた接着性、耐水性が低下
傾向にあるため、この難点をカバーする接着剤を選定し
なければならない。従って熱膨張性微粒中空体を配合し
た接着剤が、熱膨張性微粒中空体の膨張に追従する特
性、表面材である金属化粧板に優れた接着性、積層体で
ある接着パネルとしての耐水性、耐熱性など業界の品質
要求試験に合格する性能水準を発現する接着剤を開発す
ることに鋭意研究を重ねた。Further, when the heat-expandable fine hollow particles are mixed with the water-based adhesive, the adhesiveness and water resistance originally possessed by the adhesive tend to decrease due to the water absorption of the heat-expandable fine hollow particles. Therefore, it is necessary to select an adhesive that covers this difficulty. Therefore, the adhesive compounded with the heat-expandable fine hollow particles has the property of following the expansion of the heat-expandable fine hollow particles, the excellent adhesiveness to the metal decorative plate as the surface material, and the water resistance as an adhesive panel as a laminate. , Has conducted intensive research to develop an adhesive that exhibits performance levels that pass industry quality requirements tests such as heat resistance.
【００１３】本研究で、特に留意したのはリサイクル時
の再剥離の容易性である。表面材の化粧金属板に優れた
接着性を与え、積層体である接着パネルとして、耐水
性、耐熱性などの性能水準を与えることを前提として、
リサイクルするときには表面材の化粧金属板と基材の多
孔質ボードが自然剥離した状態にあるか、表面材の化粧
金属板のみを手で容易に剥離できる程度の剥離容易性を
具備している接着剤の発見が、第一の目標であった。In the present study, particular attention was paid to the ease of re-peeling during recycling. Assuming that the decorative metal plate of the surface material has excellent adhesiveness and that the adhesive panel that is a laminated body has performance levels such as water resistance and heat resistance,
When recycling, the decorative metal plate of the surface material and the porous board of the base material are in a state of being naturally peeled off, or the peeling is so easy that only the decorative metal plate of the surface material can be easily peeled by hand. The discovery of the drug was the primary goal.
【００１４】その結果、熱膨張性微粒中空体を配合した
場合でも、積層体、すなわち接着パネルとして優れた接
着性能、耐水性、耐熱性など与え、熱膨張性微粒中空体
の膨張力を最大限に利用できる特性を備えた接着剤を開
発した。これを用いた積層体すなわち接着パネルを再剥
離するに際し、１５０℃程度の加熱炉で２０分〜６０分
程度放置後に取り出し手で簡単に再剥離できるところま
で来た。As a result, even when the heat-expandable fine particle hollow body is blended, excellent adhesion performance, water resistance, heat resistance, etc. are provided as a laminate, that is, an adhesive panel, and the expansive force of the heat-expandable fine particle hollow body is maximized. We have developed an adhesive with properties that can be used for In re-peeling a laminate using this, that is, an adhesive panel, it has come to a point where it can be easily re-peeled by a hand after leaving it in a heating furnace at about 150 ° C. for about 20 to 60 minutes.
【００１５】このレベルの再剥離を具備すれば、実用性
はある。しかし、加熱時間の短縮、熱い内に行う再剥離
作業への障害（作業者が火傷などの危険があることな
ど）、安全のため手で触れる程度まで放置すれば、熱膨
張性微粒中空体が萎んで再び接着してしまう傾向がある
こと、高温に長時間放置するため、接着パネルが変形、
変質してしまう場合があることに気づき、本発明を更に
有用にするための技術手段を第二の目標として研究し
た。With this level of repeelability, there is utility. However, shortening the heating time, obstacles to the re-peeling work performed while it is hot (such as the risk of burns to the worker), and leaving it to the extent that it can be touched by hand for safety, the thermally expandable fine particle hollow body There is a tendency to shrink and bond again, and the adhesive panel is deformed because it is left at high temperature for a long time,
Realizing that it may be altered, the technical means for making the present invention more useful was studied as a second goal.
【００１６】その結果、エネルギー照射装置を備えた加
熱炉を用いて再剥離する接着剥離方法を用いることに想
到した。最初に、加熱炉における紫外線照射をおこなっ
たところ、かなり短時間に再剥離できるところまで来
た。しかし、紫外線は人体に有害につき、大掛かりな装
置的な工夫が必要であった。ついで赤外線に着目し、実
験をおこなったところ、単なる赤外線よりも遠赤外線照
射がさらに有効であることを発見した。特にある波長領
域が極めて有効なことにも気がついた。それでも自然剥
離までには至らなかったため、多数の接着剤で積層体で
ある接着パネルを試作し、実験したところ、なんと数分
程度の遠赤外照射で見事に自然剥離する積層体である接
着パネルを発見し、第一目標、第二目標の総てが解決す
ることで、本発明を完成させた。As a result, it has been conceived to use an adhesion peeling method in which the peeling is performed again using a heating furnace equipped with an energy irradiation device. First, when UV irradiation was performed in a heating furnace, it came to a point where re-peeling could be performed in a considerably short time. However, since ultraviolet rays are harmful to the human body, it is necessary to devise a large-scale device. Then, when we focused on infrared rays and conducted experiments, we found that far infrared irradiation was more effective than simple infrared rays. I also noticed that a certain wavelength range is extremely effective. Even so, it was not possible to spontaneously peel off, so we made a prototype of an adhesive panel that is a laminated body with a large number of adhesives, and when we tested it, an adhesive panel that is a laminated body that naturally peels off with far infrared irradiation for about several minutes. The present invention was completed by discovering the above and solving all of the first and second goals.
【００１７】以下に上記の課題を解決するための本発明
の手段について説明する。請求項１の発明では、化粧金
属板からなる表面材および多孔質ボードからなる基材を
（Ａ）乾燥後の形成フィルムの抗張力が１〜２８ＭＰ
ａ、伸び率１００〜２０００％の特性を有するポリマー
を含有する水分散液および（Ｂ）熱膨張性微粒中空体か
らなる水性接着剤組成物により接着してなる接着パネル
であることを特徴とする再剥離可能な積層体である。The means of the present invention for solving the above problems will be described below. According to the invention of claim 1, cosmetic money
(A) The tensile strength of the formed film after drying the surface material made of a metal plate and the base material made of a porous board is 1 to 28MP.
a, an adhesive panel obtained by adhering with an aqueous adhesive composition comprising an aqueous dispersion containing a polymer having an elongation of 100 to 2000% and (B) a thermally expandable fine hollow particle
A re-peelable laminate, characterized in that it.
【００１８】本発明において使用する接着剤は水性接着
剤であるので、水性接着剤の水分を接着時に表面材ある
いは基材のいずれかから抜け出させる必要がある。そこ
で、この発明では、接着パネルの基材を多孔質ボードと
する。Since the adhesive used in the present invention is a water-based adhesive, it is necessary to let the water content of the water-based adhesive escape from either the surface material or the base material at the time of bonding. Therefore, in the present invention, the base material of the adhesive panel is a porous board .
【００１９】この発明における接着剤は、表面材に基本
的な接着性を備え、熱膨張性微粒中空体の熱膨張追従性
が良好であるため、得られた積層体は、使用時に接着性
能を維持し、熱膨張性微粒中空体の膨張力を有効に利用
できる。リサイクルするときには、表面材のみを手で容
易に剥離できる程度の剥離容易性を与えることができ
る。The adhesive according to the present invention has a basic adhesiveness to the surface material, and the thermal expansion followability of the thermally expandable fine particle hollow body is good. Therefore, the obtained laminate has an adhesive performance at the time of use. It is possible to maintain and effectively use the expansion force of the heat-expandable fine hollow particles. At the time of recycling, it is possible to provide a peeling property such that only the surface material can be easily peeled by hand.
【００２０】このように、本発明の積層体は、表面材が
化粧金属板で基材が多孔質ボードからなる接着パネルか
らなる再剥離可能な積層体である。 As described above, the laminate of the present invention is an adhesive panel whose surface material is a decorative metal plate and whose base material is a porous board .
It is a re-peelable laminated body consisting of .
【００２１】請求項２の発明では、（Ａ）成分のポリマ
ーを含有する水分散液は、ポリ酢酸ビニル系ポリマー、
ウレタン系ポリマー、アクリル系ポリマー、シリコーン
系ポリマー、クロロプレンエラストマー、スチレンブタ
ジエンエラストマーから選択した１種以上のポリマーか
らなることを特徴とする請求項１の手段における再剥離
可能な積層体である。According to the second aspect of the invention, the aqueous dispersion containing the polymer as the component (A) is a polyvinyl acetate polymer,
The removable laminate according to claim 1 , which is composed of one or more polymers selected from urethane-based polymers, acrylic-based polymers, silicone-based polymers, chloroprene elastomers, and styrene-butadiene elastomers.
【００２２】この請求項２の発明における接着剤は、表
面材、特に化粧金属板に比較的接着性が優れ、熱膨張性
微粒中空体の熱膨張追従性が優れるため、この接着剤を
用いた積層体である接着パネルは、使用時における接着
性能を維持し、熱膨張性微粒中空体の膨張力が一層優れ
る。リサイクルするときには表面材である化粧金属板と
基材である多孔質ボードが自然剥離した状態にあるか、
表面材である化粧金属板のみを手で容易に剥離できる程
度の剥離容易性を与えることができる。The adhesive according to the second aspect of the present invention is used because it has a relatively excellent adhesiveness to a surface material, particularly a decorative metal plate, and the thermal expansion followability of the thermally expandable fine hollow particles is excellent. The adhesive panel, which is a laminate, maintains the adhesive performance during use, and the expandability of the thermally expandable fine particle hollow body is further excellent. When recycling, whether the decorative metal plate which is the surface material and the porous board which is the base material are naturally peeled off,
It is possible to provide the peeling property such that only the decorative metal plate as the surface material can be easily peeled by hand.
【００２３】請求項３の発明では、（Ａ）成分のポリマ
ーを含有する水分散液は、エチレン−酢酸ビニル系共重
合体エマルジョンからなることを特徴とする請求項１の
手段における再剥離可能な積層体である。In the invention of claim 3 , the aqueous dispersion containing the polymer of the component (A) is composed of an ethylene-vinyl acetate copolymer emulsion, which is removable in the means of claim 1. It is a laminated body.
【００２４】請求項４の発明では、（（Ａ）成分のポリ
マーを含有する水分散液は、エチレン−酢酸ビニル系共
重合体エマルジョンとアニオン性ポリウレタンエマルジ
ョンからなることを特徴とする請求項１の手段における
再剥離可能な積層体である。[0024] In the present invention of claim 4, ((A) an aqueous dispersion containing a polymer component, ethylene - of claim 1, characterized in that vinyl acetate copolymer emulsion and an anionic polyurethane emulsion It is a re-peelable laminated body in the means.
【００２５】請求項５の発明では、アニオン性ポリウレ
タンエマルジョンは、スルホン酸変性したアニオン性ポ
リウレタンエマルジョンであることを特徴とする請求項
４の手段における再剥離可能な積層体である。The claims in the invention of claim 5, the anionic polyurethane emulsion, which is a sulfonic acid-modified anionic polyurethane emulsion
4 is a re-peelable laminated body according to the means of 4 .
【００２６】以上の請求項３〜５のいずれか１項の発明
の手段におけるの接着剤は、表面材の化粧金属板に接着
性が優れ、熱膨張性微粒中空体の熱膨張追従性が非常に
優れるため、この接着剤を用いた積層体である接着パネ
ルは、耐水性、耐熱性に優れ、使用時に接着性能を維持
し、熱膨張性微粒中空体の膨張力を最大限に発揮できる
ため、接着性、接着性能、再剥離性能のバランスが優れ
た再剥離可能な積層体である接着パネルを与えることが
できる。The adhesive in the means of the invention according to any one of claims 3 to 5 has excellent adhesiveness to the decorative metal plate of the surface material, and the thermal expansion followability of the thermally expandable fine hollow particles is extremely high. Since the adhesive panel that is a laminate using this adhesive has excellent water resistance and heat resistance, it can maintain the adhesive performance during use and maximize the expansive force of the heat-expandable fine hollow particles. It is possible to provide an adhesive panel which is a removable laminate having an excellent balance of adhesiveness, adhesive performance and removability.
【００２７】請求項６の発明では、（Ａ）成分のポリマ
ーを含有する水分散液は、そのポリマー固形分１００質
量部に対して、（Ｂ）成分の熱膨張性微粒中空体を２〜
１００質量部を配合してなることを特徴とする請求項１
〜５のいずれか１項の手段における再剥離可能な積層体
である。In the sixth aspect of the invention, the aqueous dispersion containing the polymer of the component (A) contains 2 to 5 parts by weight of the thermally expandable fine particle hollow body of the component (B) with respect to 100 parts by mass of the solid content of the polymer.
2. The composition according to claim 1, wherein 100 parts by mass is blended.
It is a re-peelable laminated body in any one of the means of 5 to 5 .
【００２８】この配合範囲にあれば熱膨張性微粒中空体
による接着性、耐水性の低下を最小限に押さえることが
できる接着剤となるので、得られた積層体である接着パ
ネルは、接着性、耐水性の低下が比較的少なく、かつ、
膨張による効果を有効に発揮できる配合領域である。特
に請求項３または４の手段に示した接着剤の組成、請求
項６の手段に示した特性を持つ熱膨張性微粒中空体を使
用し、本請求項の配合とした接着剤を用いた場合、接着
性、接着性能、再剥離性能において、最高水準の再剥離
可能な接着パネルとなる。When the content is within this range, the resulting adhesive is an adhesive which can minimize the deterioration of the adhesiveness and water resistance due to the thermally expandable fine hollow particles. , Relatively less deterioration in water resistance, and
It is a compounding area where the effect of expansion can be effectively exhibited. In particular the composition of the adhesive shown in section according to claim 3 or 4, wherein
When the heat-expandable fine particle hollow body having the characteristics shown in the means of Item 6 is used and the adhesive compounded according to the present invention is used, the highest level of removability is obtained in terms of adhesiveness, adhesive performance and removability. It becomes a possible adhesive panel.
【００２９】請求項７の発明では、Ｂ）成分の熱膨張性
微粒中空体は、発泡倍率が２０〜１００倍で有り、発泡
開始温度が９０〜１５０℃であることを特徴とする請求
項１〜６のいずれか１項の手段における再剥離可能な積
層体である。[0029] In the invention of claim 7, B) thermally expandable particulate hollow body components, wherein the expansion ratio be 20 to 100 times, the foaming start temperature is characterized in that it is a 90 to 150 ° C.
Item 1 is a re-peelable laminate according to any one of items 1 to 6 .
【００３０】この発明における熱膨張性微粒中空体の特
性は、接着パネルとして通常使用される用途にて、自然
発泡を生じることなく、長期間接着性能を維持するため
の好ましい領域である。The characteristics of the heat-expandable fine hollow particles in the present invention are preferable regions for maintaining the adhesive performance for a long period of time without causing spontaneous foaming in the applications usually used as an adhesive panel.
【００３１】ところで、リサイクルのため再剥離したと
きにリサイクルする側の材料面に接着剤を残したくない
ときには、その相手側材面を凹凸面とすることにより全
体の接着表面積を大にして全体の接着力を高めること
で、再剥離したときにその凹凸面側に接着剤を残すよう
にするとよい。By the way, when it is not desired to leave the adhesive on the material surface on the recycling side when it is peeled off again for recycling, the mating surface of the mating material is made uneven to increase the entire adhesive surface area. It is advisable to increase the adhesive strength so that the adhesive remains on the uneven surface side when the adhesive is removed again.
【００３２】請求項８の発明では、請求項１〜７のいず
れか１項に記載の再剥離可能な積層体に対し加熱炉内で
遠赤外線照射を行うことを特徴とする積層体の再剥離方
法である。According to the invention of claim 8 , far-infrared irradiation is performed in a heating furnace to the re-peelable laminate according to any one of claims 1 to 7 , re-peel of the laminate. Is the way.
【００３３】この遠赤外線照射装置を備えた加熱炉を用
いる場合には、積層体である接着剤パネルは表面材の化
粧金属板を上にし、その上部から遠赤外線照射して再剥
離を行う。これにより再剥離できるまでの時間を大幅に
短縮することができる。この遠赤外線照射は、下記に示
す請求項１１の発明における紫外線照射より効率がよ
く、かつ、安全な手段である。遠赤外線照射を行えば、
加熱炉のみを用いた場合に比較して、再剥離可能な状態
に至る時間を大幅に短縮できる。When a heating furnace equipped with this far-infrared irradiation device is used, the adhesive panel, which is a laminated body, has a decorative metal plate as a surface material facing upward, and far-infrared rays are irradiated from above to perform peeling. As a result, the time required for re-peeling can be greatly shortened. This far infrared irradiation is a more efficient and safer means than the ultraviolet irradiation in the invention of claim 11 shown below. With far infrared irradiation,
As compared with the case where only the heating furnace is used, the time required to reach the removable state can be significantly shortened.
【００３４】請求項９の発明では、遠赤外線照射は、波
長が５〜３０μの遠赤外線を照射することを特徴とする
請求項８の手段における積層体の再剥離方法である。The invention of claim 9 is characterized in that the far-infrared irradiation is irradiation of far-infrared rays having a wavelength of 5 to 30 μm.
It is the method for re-peeling a laminate according to the means of claim 8 .
【００３５】加熱炉内において、この遠赤外線の波長領
域を設定して照射すれば、再剥離可能な状態に至る時間
を大幅に短縮することができる。By setting and irradiating the wavelength range of the far infrared rays in the heating furnace, it is possible to greatly reduce the time required to reach the re-separable state.
【００３６】請求項１０の発明では、加熱炉内は、雰囲
気を１５０℃以上に調整し、遠赤外線照射を２分間以上
継続することにより、化粧金属板を多孔質ボードから自
然剥離させることを特徴とする請求項８または９の手段
における積層体の再剥離方法である。According to the tenth aspect of the invention, in the heating furnace, the atmosphere is adjusted to 150 ° C. or higher, and the far-infrared ray irradiation is continued for 2 minutes or longer, whereby the decorative metal plate is spontaneously peeled from the porous board. The method for re-peeling a laminated body according to the means of claim 8 or 9 .
【００３７】この加熱炉の雰囲気を１５０℃以上に調整
し遠赤外線照射を２分間以上保持することにより表面材
である化粧金属板を基材である多孔質ボードから自然剥
離できるため、生産工程で発生する接着不良などによる
再剥離作業が極めて容易に実施でき、使用が終わった積
層体である接着パネルのリサイクルが非常に容易とな
る。By adjusting the atmosphere of the heating furnace to 150 ° C. or higher and holding the far infrared ray irradiation for 2 minutes or longer, the decorative metal plate as the surface material can be naturally peeled off from the porous board as the base material. The re-peeling work due to defective adhesion or the like can be carried out very easily, and the used adhesive panel, which is a laminated body, can be recycled very easily.
【００３８】上記の手段において、多孔質ボードに化粧
金属板を接着剤により接着した接着パネルにおいて、
（Ａ）エチレン−酢酸ビニル系共重合体エマルジョンま
たはエチレン−酢酸ビニル系共重合体エマルジョンとス
ルホン酸変性したアニオン性ポリウレタンエマルジョ
ン、および（Ｂ）発泡倍率が２０〜１００倍であり、発
泡開始温度が９０〜１５０℃である熱膨張性微粒中空体
からなり、（Ａ）におけるポリマー固形分１００質量部
に対して、熱膨張性微粒中空体２〜１００質量部を配合
した接着剤を用いた接着パネルは、本発明の再剥離方法
に適合する特性を持つため、遠赤外線照射により化粧金
属板を多孔質ボードから自然剥離させる再剥離方法によ
る効果が最大限に発揮できる。In the above-mentioned means, in an adhesive panel in which a decorative metal plate is adhered to a porous board with an adhesive,
(A) an ethylene-vinyl acetate-based copolymer emulsion or an ethylene-vinyl acetate-based copolymer emulsion and a sulfonic acid-modified anionic polyurethane emulsion; and (B) a foaming ratio of 20 to 100 times, and a foaming start temperature. An adhesive panel comprising a thermally expandable fine particle hollow body having a temperature of 90 to 150 ° C., and using 2 to 100 parts by mass of the thermally expandable fine particle hollow body based on 100 parts by mass of the polymer solid content in (A). Has a property compatible with the re-peeling method of the present invention, and thus the effect of the re-peeling method of naturally peeling the decorative metal plate from the porous board by irradiation with far infrared rays can be maximized.
【００３９】請求項１１の発明では、請求項１〜７のい
ずれか１項の手段における再剥離可能な積層体に対し加
熱炉内で紫外線照射を行うことを特徴とする積層体の再
剥離方法である。この紫外線照射装置を備えた加熱炉を
用いる場合には、接着剤パネルは化粧金属板を上にし、
その上部から紫外線照射して再剥離を行う。これにより
再剥離できるまでの時間を短縮することができる。請求
項８の発明における遠赤外線照射は、紫外線照射より効
率がよく、かつ、安全な手段である。紫外線照射を行え
ば加熱炉のみを用いた場合に比較して、再剥離可能な状
態に至る時間を短縮できる。According to an eleventh aspect of the present invention, the re-peeling method for a laminated body is characterized in that the re-peelable laminated body according to any one of the first to seventh aspects is irradiated with ultraviolet rays in a heating furnace. Is. When using a heating furnace equipped with this ultraviolet irradiation device, the adhesive panel with the decorative metal plate on top,
Ultraviolet irradiation is carried out from the upper part to perform re-peeling. This makes it possible to shorten the time required for re-peeling. Claim
Far-infrared irradiation in the invention of Item 8 is a more efficient and safer means than ultraviolet irradiation. If ultraviolet irradiation is performed, the time required to reach a removable state can be shortened as compared with the case where only a heating furnace is used.
【００４０】[0040]
【発明の実施の形態】本発明においては、（Ａ）乾燥後
の形成フィルムの抗張力が１〜２８ＭＰａ、伸び率１０
０〜２０００％の特性を有するポリマーであるかどうか
の決定から始まる。これらを測定する場合、ポリマーを
含有する水分散液の乾燥フィルムがこの範囲であれば、
そのまま利用することができる。もし、この範囲にない
場合、可塑剤のような軟化剤、無機充填剤のような補強
剤で、この特性を持つように調整してもよい。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, (A) the tensile strength of the formed film after drying is 1 to 28 MPa and the elongation is 10
It starts with the determination of whether the polymer has properties of 0-2000%. When measuring these, if the dry film of the aqueous dispersion containing the polymer is in this range,
It can be used as it is. If it is not within this range, a softening agent such as a plasticizer and a reinforcing agent such as an inorganic filler may be adjusted to have this property.
【００４１】（Ａ）乾燥後の形成フィルムの抗張力が１
ＭＰａ未満の場合、凝集力が不足するため、積層体であ
る接着パネルとしての使用時に接着性能を維持すること
ができず、２８ＭＰａを超える場合、熱膨張性微粒中空
体の膨張を抑制することで本発明の効果を得られない。
乾燥後のフィルムの伸び率が１００％未満の場合、熱膨
張性微粒中空体の膨張を抑制することで本発明の効果を
得られず、２０００％を超える場合、凝集力が不足する
ため、積層体である接着パネルとしての使用時に接着性
能を維持することができない。(A) The tensile strength of the formed film after drying is 1
When the pressure is less than MPa, the cohesive force is insufficient, and therefore the adhesive performance cannot be maintained during use as an adhesive panel which is a laminate, and when the pressure exceeds 28 MPa, expansion of the heat-expandable fine particle hollow body is suppressed. The effect of the present invention cannot be obtained.
If the elongation of the film after drying is less than 100%, the effect of the present invention cannot be obtained by suppressing the expansion of the heat-expandable fine hollow particles, and if it exceeds 2000%, the cohesive force is insufficient, so that lamination The adhesive performance cannot be maintained when used as a body adhesive panel.
【００４２】接着性、使用時の接着性能の維持、熱膨張
性微粒中空体の膨張を最大限にする効果を与える最も有
効な物性領域は、３〜１５ＭＰａ、伸び率２００〜１５
００％の範囲である。The most effective physical property region which exerts the effects of the adhesiveness, the maintenance of the adhesive performance during use, and the maximal expansion of the thermally expandable fine hollow particles is 3 to 15 MPa and the elongation rate is 200 to 15.
It is in the range of 00%.
【００４３】この形成フィルムを得る方法は、ポリマー
を含有する水分散液を離形紙上などに均一に塗布し、自
然乾燥することで得ることができる。形成フィルムの特
性の確認は、ＪＩＳ Ｋ ６２５１に基づく方法で決定
できる。ここで、フィルム強度とは常温２３℃における
最大破壊強度で、伸び率とはその時の最大伸びである。
なお、（Ｂ）熱膨張性微粒中空体を配合した場合、均質
分散の程度で、最大強度、伸び率が影響されるため、決
定は未配合で行う必要がある。The method for obtaining this formed film can be obtained by uniformly coating an aqueous dispersion containing a polymer on a release paper and naturally drying it. The characteristics of the formed film can be confirmed by a method based on JIS K6251. Here, the film strength is the maximum breaking strength at room temperature of 23 ° C., and the elongation is the maximum elongation at that time.
In addition, when (B) the thermally expandable fine hollow particles are blended, the maximum strength and the elongation rate are affected by the degree of homogeneous dispersion, and therefore the determination needs to be made without blending.
【００４４】（Ａ）ポリマーを含有する水分散液（ポリ
マーエマルジョン）が、ポリ酢酸ビニル系ポリマー、ウ
レタン系ポリマー、アクリル系ポリマー、シリコーン系
ポリマー、クロロプレンエラストマー、スチレンブタジ
エンエラストマーから選択した１種以上のポリマーを選
択すればよい。ポリ酢酸ビニル系ポリマーとは、ポリ酢
酸ビニルホモポリマー、エチレン−酢酸ビニル系共重合
体、エチレン−酢酸ビニル−アクリル酸エステル系共重
合体、酢酸ビニル−アクリル酸エステル系共重合体であ
る。アクリル系ポリマーとは、（メタ）アクリル酸エス
テル系共重合体、（メタ）アクリル酸エステル−スチレ
ン共重合体である。アニオン性ポリウレタンエマルジョ
ンとは、分子中にアニオン電化を有するポリウレタンエ
マルジョンである。スルホン酸変性したアニオン性ポリ
ウレタンポリマーとはウレタンポリマー分子内にスルホ
ネート基を有し、通常はスルホネート塩となって乳化安
定しているウレタンポリマーである。水分散化できるシ
リコーン系ポリマーとは骨格がオルガノシラン構造を有
するシリコーンポリマー、主鎖構造がポリオキシプロピ
レンである変性シリコーンポリマーである。The aqueous dispersion (polymer emulsion) containing the polymer (A) comprises at least one selected from polyvinyl acetate type polymers, urethane type polymers, acrylic type polymers, silicone type polymers, chloroprene elastomers and styrene butadiene elastomers. A polymer may be selected. The polyvinyl acetate-based polymer is a polyvinyl acetate homopolymer, an ethylene-vinyl acetate-based copolymer, an ethylene-vinyl acetate-acrylic acid ester-based copolymer, or a vinyl acetate-acrylic acid ester-based copolymer. The acrylic polymer is a (meth) acrylic acid ester-based copolymer or a (meth) acrylic acid ester-styrene copolymer. The anionic polyurethane emulsion is a polyurethane emulsion having anion charge in the molecule. The sulfonic acid-modified anionic polyurethane polymer is a urethane polymer which has a sulfonate group in the urethane polymer molecule and usually becomes a sulfonate salt and is emulsion-stabilized. The water-dispersible silicone polymer is a silicone polymer having an organosilane structure as a skeleton and a modified silicone polymer having a polyoxypropylene main chain structure.
【００４５】この発明において、エチレン−酢酸ビニル
系共重合体エマルジョンまたはエチレン−酢酸ビニル系
共重合体エマルジョンとアニオン性ポリウレタンエマル
ジョンからなる接着剤の選択を行えば、パネル工場など
における生産ライン適性に優れ、化粧金属板に最も優れ
た被着性を与え、耐水性、耐熱性などの品質性能を発現
し、熱膨張性微粒中空体の膨張追従性が優れるため、リ
サイクル時の再剥離性能も優れる。このエチレン−酢酸
ビニル系共重合体エマルジョンにおいては、生産ライン
適性、熱膨張性微粒中空体の混合容易性からポリビニル
アルコールを含有するものが好ましい。特に、エチレン
−酢酸ビニル系共重合体エマルジョンとスルホン酸変性
したアニオン性ポリウレタンエマルジョンを配合した場
合、熱膨張性微粒中空体の配合による接着性、耐水性の
低下を抑制できる。In the present invention, if an adhesive consisting of an ethylene-vinyl acetate copolymer emulsion or an ethylene-vinyl acetate copolymer emulsion and an anionic polyurethane emulsion is selected, the production line suitability in a panel factory is excellent. Since the decorative metal plate is provided with the best adherence, and the quality properties such as water resistance and heat resistance are exhibited, and the expandability of the heat-expandable fine hollow particles is excellent, the removability at the time of recycling is also excellent. In this ethylene-vinyl acetate copolymer emulsion, those containing polyvinyl alcohol are preferable from the viewpoint of production line suitability and the ease of mixing the heat-expandable fine hollow particles. In particular, when an ethylene-vinyl acetate copolymer emulsion and a sulfonic acid-modified anionic polyurethane emulsion are blended, it is possible to suppress a decrease in adhesiveness and water resistance due to the blending of the thermally expandable fine hollow particles.
【００４６】さらに、エチレン−酢酸ビニル系共重合体
エマルジョンにおいて、トルエン不溶分が７０質量％以
上である特性を有する場合、熱膨張性微粒中空体の配合
による接着性、耐水性の低下の抑制効果が顕著となる。
このトルエン不溶分が７０質量％以上であるエチレン−
酢酸ビニル系共重合体エマルジョンと、スルホン酸変性
したアニオン性ポリウレタンエマルジョンを組み合わせ
た場合、熱膨張性微粒中空体の配合の弊害である接着
性、耐水性の低下を最大限に抑制できるので、本発明の
効果が最も優れる。Further, when the ethylene-vinyl acetate copolymer emulsion has a characteristic that the toluene insoluble content is 70% by mass or more, the effect of suppressing the decrease in adhesiveness and water resistance by the incorporation of the thermally expandable fine hollow particles. Becomes noticeable.
Ethylene containing 70% by mass or more of this toluene-insoluble matter
When a vinyl acetate copolymer emulsion and a sulfonic acid-modified anionic polyurethane emulsion are combined, it is possible to maximize the reduction of adhesion and water resistance, which are harmful effects of the blending of the thermally expandable fine hollow particles. The effect of the invention is the best.
【００４７】このトルエン不溶分が７０質量％以上のポ
リビニルアルコール含有エチレン−酢酸ビニル−多官能
性モノマー系共重合体エマルジョンである。これらは、
特開平９−１９４８１１号公報に示される製造方法を用
いて得ることができる。スルホン酸変性である特性を備
えたウレタン系エマルジョンとして好ましいものは、ス
ルホン酸基を有しポリエステル骨格を持つ芳香族系アニ
オン性ウレタンエマルジョンが例示できる。This is a polyvinyl alcohol-containing ethylene-vinyl acetate-polyfunctional monomer copolymer emulsion having a toluene insoluble content of 70% by mass or more. They are,
It can be obtained by using the manufacturing method disclosed in JP-A-9-194811. A preferable example of the urethane-based emulsion having the property of being modified by sulfonic acid is an aromatic anionic urethane emulsion having a sulfonic acid group and a polyester skeleton.
【００４８】さらに、外装用接着パネルなど、高度な耐
水性、耐熱性、耐煮沸性などが必要な場合、本発明の接
着剤にポリイソシアネート化合物、エポキシ化合物を代
表とする架橋剤を配合することができる。Furthermore, when a high degree of water resistance, heat resistance, boiling resistance, etc. is required for an exterior adhesive panel, etc., a crosslinking agent represented by a polyisocyanate compound and an epoxy compound is added to the adhesive of the present invention. You can
【００４９】熱膨張性微粒中空体とは、加熱することに
より化粧金属板のみを再剥離するために配合する成分
で、発泡倍率が２０〜１００倍であり、発泡開始温度は
９０〜１５０℃のものである。このような熱膨張性微粒
中空体は液体ガスを内包したポリマー殻で生成した平均
粒子径が３〜３０μのプラスチック球体からなる微粒中
空体すなわちマイクロカプセルで、加熱されることによ
り、殻の内部のガス圧が増し、熱可塑性プラスチックの
殻が軟化することで、体積が劇的に増加し、中空球状粒
子になるものである。発泡倍率が２０倍未満である熱膨
張性微粒中空体においては、再剥離性能が低下傾向を示
し、発泡倍率が１００倍を超える熱膨張性微粒中空体に
おいては、発泡開始温度が１５０℃を超える傾向がある
ため、加熱温度を高く、かつ、時間を長く設定する必要
がある。熱膨張性微粒中空体の平均粒子径は非常に重要
で、３μ未満の場合、再剥離性の低下傾向および混合時
の分散性の低下傾向を招くことがある。３０μを超える
場合、混合時の粗粒子を生じる傾向が高まる。特に平均
粒子径が９〜１７μの範囲の熱膨張性微粒中空体を選択
すれば、本発明を最も効果的に実施できる。プラスチッ
ク球体は塩素化合物を含まないアクリル系ポリマーがダ
イオキシンを発生せず、エチレン−酢酸ビニル系共重合
体エマルジョンとの相溶性、膨張力を最大に発揮できる
ことから好ましい。これら熱膨張性微粒中空体は市販品
を使用でき、その市販品としては、例えば、ＥＸＰＡＮ
ＣＥＬ０５３ＤＵ（Ｅｘｐａｎｃｅｌ社製、発泡倍率３
５倍、発泡開始温度１０１℃）がある。The heat-expandable fine particle hollow body is a component to be added for re-peeling only the decorative metal plate by heating, the expansion ratio is 20 to 100 times, and the foaming start temperature is 90 to 150 ° C. It is a thing. Such a heat-expandable fine particle hollow body is a fine particle hollow body or a microcapsule made of a plastic sphere having an average particle size of 3 to 30 μ generated in a polymer shell containing a liquid gas. The gas pressure increases and the thermoplastic shell softens, resulting in a dramatic increase in volume into hollow spherical particles. In the heat-expandable fine particle hollow body having an expansion ratio of less than 20 times, the removability tends to decrease, and in the heat-expandable fine particle hollow body having an expansion ratio of more than 100 times, the foaming initiation temperature exceeds 150 ° C. Because of the tendency, it is necessary to set the heating temperature high and set the time long. The average particle size of the heat-expandable fine hollow particles is very important, and if it is less than 3 μm, the removability and the dispersibility during mixing may decrease. If it exceeds 30 μ, the tendency to produce coarse particles during mixing increases. In particular, the present invention can be most effectively carried out by selecting a thermally expandable fine hollow particle having an average particle diameter in the range of 9 to 17 μm. Plastic spheres are preferred because acrylic polymers containing no chlorine compounds do not generate dioxins and can maximize compatibility with ethylene-vinyl acetate copolymer emulsion and swelling power. Commercially available products can be used for these heat-expandable fine hollow particles. Examples of commercially available products include EXPAN.
CEL053DU (manufactured by Expancel, foaming ratio 3
5 times, foaming start temperature 101 ° C).
【００５０】本発明の水性接着剤組成物は、（Ａ）ポリ
マー系水性エマルジョンの組成・種類に関係なく、その
ポリマー固形分と（Ｂ）熱膨張性微粒中空体（粉体）の
配合割合を定めることができる。すなわち、（Ａ）ポリ
マー成分１００質量部（固形分）に対して（Ｂ）熱膨張
性微粒中空体（粉体）２〜１００質量部である。熱膨張
性微粒中空体による接着性、耐水性、熱膨張性微粒中空
体に対する膨張追従性を考慮すれば５〜７５質量部であ
ることが好ましい。（Ｂ）成分が少なすぎると再剥離性
が難しくなり、多すぎると常態接着強さの低下、耐水性
の低下、接着剤への混合性、接着剤使用時の作業性不
良、コスト高となる傾向が生じる。In the water-based adhesive composition of the present invention, regardless of the composition and type of the (A) polymer-based water-based emulsion, the mixing ratio of the polymer solid content and (B) the thermally expandable fine hollow particles (powder) is set. Can be set. That is, it is 2 to 100 parts by mass of (B) heat-expandable fine hollow particles (powder) with respect to 100 parts by mass (solid content) of the polymer component (A). Considering the adhesiveness due to the heat-expandable fine hollow particles, water resistance, and the expansion followability with respect to the heat-expandable fine hollow particles, the amount is preferably 5 to 75 parts by mass. If the component (B) is too small, the removability becomes difficult, and if it is too large, the normal state adhesive strength is lowered, the water resistance is lowered, the mixing property with the adhesive, the workability at the time of using the adhesive is poor, and the cost is high. A tendency arises.
【００５１】本発明の化粧金属板とは、金属板の表面側
へ樹脂化粧シートが積層され、その裏面側に保護層が設
けられている構成のものが主である。ただし、裏面の保
護層はない場合もある。The decorative metal plate of the present invention mainly has a structure in which a resin decorative sheet is laminated on the front surface side of the metal plate and a protective layer is provided on the rear surface side thereof. However, there may be no protective layer on the back surface.
【００５２】ここで注意すべきは、接着面のことであ
る。これら接着面は、エポキシコート、塩ビコートなど
ポリマー系塗料でコーティングされたカラー塗装した鋼
板、その他の金属板、燐酸塩処理した鋼板や陽極酸化処
理したアルミニウム板であって、これらは難接着に属す
る材料である。What should be noted here is the adhesive surface. These adhesive surfaces are color-coated steel plates coated with a polymer-based paint such as epoxy coat and vinyl chloride coat, other metal plates, phosphate-treated steel plates and anodized aluminum plates, which belong to difficult adhesion. It is a material.
【００５３】本発明の多孔質ボードとは、多孔質ボード
は、ＭＤＦ、パーチクルボード、合板などの木質ボード
類、石膏ボード、フレキシブルボード、ＡＬＣ版、ケイ
酸カルシウム板などの無機質ボード、発泡ウレタンボー
ド、ＦＲＰ板などのプラスチックボードがある。The porous board of the present invention means wood boards such as MDF, particle board, plywood, gypsum board, flexible board, ALC plate, inorganic board such as calcium silicate board, urethane foam board, There are plastic boards such as FRP boards.
【００５４】本発明の化粧金属板の用途は、浴室すなわ
ちバス壁やバスの天井板などに用いられているものその
他である。The decorative metal plate of the present invention is used for a bathroom, that is, a wall of a bus, a ceiling plate of a bus, and the like.
【００５５】本発明の接着パネルの製造は、エチレン−
酢酸ビニル系共重合体エマルジョンと熱膨張性微粒中空
体を配合した水性接着剤を用いて詳細に説明する。ま
た、化粧金属板は、接着面がエポキシコート、塩ビコー
トなどポリマー系塗料でコーティングされたカラー塗装
した鋼板を用いて、多孔質ボードは、接着パネルによく
用いられる石膏ボードを用いて説明する。The production of the adhesive panel of the present invention is carried out with ethylene-
A detailed description will be given using an aqueous adhesive containing a vinyl acetate copolymer emulsion and a thermally expandable fine hollow particle. The decorative metal plate will be described using a color-painted steel plate whose adhesive surface is coated with a polymer-based paint such as epoxy coat or vinyl chloride coat, and the porous board will be described using a gypsum board that is often used for an adhesive panel.
【００５６】本発明の接着パネル用接着剤は、業界で慣
用的に用いられている工場生産ラインを用いて製造でき
る。即ち、通常は石膏ボードなどの多孔質ボード面に、
ロールスプレッダ、ノズル塗布などの塗布具や機械を用
いて、接着剤の塗布作業（通常片面）を行い、その上に
化粧金属板を載置し、自重圧締、または、圧締プレスで
圧着することで製造できる。なお生産ラインによって
は、化粧金属板の接着面に塗布することもある。さら
に、水性コンタクト型接着剤を用いる場合は、両面に塗
布し、コンタクト接着することもある。The adhesive for an adhesive panel of the present invention can be produced using a factory production line which is conventionally used in the industry. That is, usually on a porous board surface such as gypsum board,
Use an applicator or machine such as a roll spreader or nozzle to apply adhesive (usually on one side), place a decorative metal plate on it, and press it with its own weight or press it with a pressing press. It can be manufactured. Depending on the production line, it may be applied to the adhesive surface of the decorative metal plate. Further, when a water-based contact adhesive is used, it may be applied on both sides and contact-adhered.
【００５７】本発明の接着パネルの再剥離方法として、
リサイクルを目的として再剥離する際には、接着パネル
を１５０℃以上の雰囲気下に２０分〜１時間程度放置
し、直ちに手などで強制剥離することにより化粧金属板
と、石膏ボードなど多孔質ボードを分別して再剥離する
ことができる。なお１２０℃に長時間（約１時間以上）
放置した場合は、同様の効果が認められる。しかし、こ
のような加熱炉を用いただけでは、加熱に長時間かかる
こと、熱い内におこなう再剥離作業は、作業者が火傷な
どの危険があること、手で触れる程度まで放置すれば熱
膨張性微粒中空体が萎んで再接着してしまうことなど、
接着パネルによっては変形、変質する恐れがある。As a method for re-peeling the adhesive panel of the present invention,
When re-peeling for the purpose of recycling, the adhesive panel is left in an atmosphere of 150 ° C or higher for about 20 minutes to 1 hour, and immediately forcibly peeled by hand etc. to make a decorative metal plate and a gypsum board or other porous board. Can be separated and removed again. At 120 ° C for a long time (about 1 hour or more)
When left to stand, the same effect is observed. However, if you only use such a heating furnace, it will take a long time to heat, the re-peeling work performed while it is hot may cause burns, etc. to the operator. For example, the hollow microparticles may shrink and reattach,
There is a risk of deformation and deterioration depending on the adhesive panel.
【００５８】これを短時間で再剥離を可能とする方法
が、加熱炉を用いて遠赤外線照射をおこなう方法であ
る。ここでは、遠赤外線ミニジェットＭＪＳ−２００
（（株）ジャード製）内を通過させる方法で説明する。
先ず加熱炉を１５０℃で通過時間を２分に設定して昇温
確認後、接着パネルをコンベアの上に載せ、通過させ
る。遠赤外線照射（波長５〜３０μ）は、接着パネルの
化粧金属面から照射され、加熱炉から出てきた接着パネ
ルは、化粧金属パネルと石膏ボードに自然剥離すること
で見事に分別できる。A method of enabling re-peeling in a short time is a method of irradiating far infrared rays using a heating furnace. Here, far infrared mini jet MJS-200
The method of passing the inside (made by Jard Co., Ltd.) will be described.
First, the heating furnace is set to 150 ° C. and the passage time is set to 2 minutes, and after confirming the temperature rise, the adhesive panel is placed on the conveyor and passed. Far-infrared irradiation (wavelength 5 to 30 μm) is applied from the decorative metal surface of the adhesive panel, and the adhesive panel coming out of the heating furnace can be finely separated by spontaneously peeling it off to the decorative metal panel and the gypsum board.
【００５９】同様に、紫外線を用いた場合を説明する。
紫外線硬化装置パナキュアーＮＵＸ７３２８Ｆ−４６７
（松下電工（株）製）を用いて加熱炉を１５０℃に設定
し、通過時間を１０分程度で、化粧金属板と多孔質ボー
ドに自然剥離した。Similarly, the case where ultraviolet rays are used will be described.
UV curing device Panacure NUX 7328F-467
(Matsushita Electric Works, Ltd.) was used and the heating furnace was set to 150 ° C., and the passing time was about 10 minutes, and the decorative metal plate and the porous board were naturally separated.
【００６０】参考のため、同じ接着パネルを１５０℃に
設定した熱風循環器で行ったところ、２０分で自然剥離
には至らないが、手などで簡単に剥離することができる
水準であった。For reference, the same adhesive panel was tested with a hot air circulator set at 150 ° C., but it did not spontaneously peel in 20 minutes, but it was at a level such that it could be peeled easily by hand.
【００６１】[0061]
【実施例】以下に実施例を記載し、本発明を詳しく説明
するが、本発明はこれら実施例に限定されるものではな
い。The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.
【００６２】ＥＶＡ（１）の製造
トルエン不溶分が７０質量％以上のポリビニルアルコー
ル含有エチレン−酢酸ビニル−多官能性モノマー系共重
合体エマルジョンは、エチレン／酢酸ビニルの質量比が
１７／８３、多官能性モノマーとしてトリアリルイソシ
アヌレートを用いて、その多官能性ポリマー／酢酸ビニ
ルの質量比が０．１／１００となるように選択して共重
合したものであって、ポリビニルアルコールの含有量が
全ポリマーの５質量％となるようにして、加圧重合装置
にポリビニルアルコール水溶液を仕込み、設計値に見合
うエチレンガスを封入した後に酢酸ビニルと多官能性モ
ノマーの混合溶液を滴下し、加圧下で５０〜７０℃にて
乳化重合することにより得られた。このポリマーのトル
エン不溶分は９２．５質量％で、その性状は、粘度２０
００ｍＰａ・ｓ／２５℃、固形分５５．３質量％、ｐＨ
４．６、フィルム抗張力９．８ＭＰａ、伸び率７００％
であった。この樹脂エマルジョンをＥＶＡ（１）とす
る。Production of EVA (1) A polyvinyl alcohol-containing ethylene-vinyl acetate-polyfunctional monomer-based copolymer emulsion having a toluene insoluble content of 70% by mass or more has an ethylene / vinyl acetate mass ratio of 17/83, A copolymer obtained by using triallyl isocyanurate as a functional monomer and copolymerizing the polyfunctional polymer / vinyl acetate in a mass ratio of 0.1 / 100 and having a polyvinyl alcohol content of A polyvinyl alcohol aqueous solution was charged into the pressure polymerization apparatus so that the content of the total polymer was 5% by mass, and ethylene gas corresponding to the designed value was sealed therein, and then a mixed solution of vinyl acetate and a polyfunctional monomer was added dropwise, and under pressure. It was obtained by emulsion polymerization at 50 to 70 ° C. The toluene insoluble content of this polymer was 92.5% by mass, and the property was that the viscosity was 20%.
00 mPa · s / 25 ° C, solid content 55.3% by mass, pH
4.6, film tensile strength 9.8 MPa, elongation rate 700%
Met. This resin emulsion is referred to as EVA (1).
【００６３】（実施例１における接着剤）
（Ａ）エチレン−酢酸ビニル系共重合体エマルジョンと
して、スミカフレックス４００（住友化学工業（株）
製、固形分濃度５５質量％、ｐＨ５、フィルム抗張力
７．４ＭＰａ、伸び率５２０％、以下、「ＳＦ４００」
と記載。）を用い、（Ａ）成分１００質量部（固形分）
に対して本発明の（Ｂ）熱膨張性微粒中空体としてＥＸ
ＰＡＮＣＥＬ０５３ＤＵ（Ｅｘｐａｎｃｅｌ社製、発泡
倍率３５倍、発泡開始温度１０１℃）を３０質量部加え
て混合し、水性接着剤組成物を得た。(Adhesive in Example 1) (A) As an ethylene-vinyl acetate copolymer emulsion, Sumika Flex 400 (Sumitomo Chemical Co., Ltd.)
Made, solid content concentration 55 mass%, pH 5, film tensile strength 7.4 MPa, elongation 520%, hereinafter "SF400"
And described. ), 100 parts by mass of component (A) (solid content)
On the other hand, as (B) the thermally expandable fine particle hollow body of the present invention, EX
30 parts by mass of PANCEL053DU (manufactured by Expancel, foaming ratio 35 times, foaming start temperature 101 ° C.) was added and mixed to obtain an aqueous adhesive composition.
【００６４】（実施例２〜６、比較例１〜２における接
着剤）
表１に示す配合量のパンフレックスＯＭ−４０００
（（株）クラレ製、固形分濃度５６質量％、ｐＨ５、フ
ィルム抗張力４．０ＭＰａ、伸び率１０００％、「以
下、ＯＭ４０００と記載」）、ＥＶＡ（１）、パンフレ
ックスＯＭ−３１００（（株）クラレ製、固形分濃度５
６質量％、ｐＨ５、フィルム抗張力１．５ＭＰａ、伸び
率３０００％以上、以下、「ＯＭ−３１００」と記
載。）、スミカフレックス４８０（住友化学工業（株）
製、固形分濃度５５質量％、ｐＨ５、フィルム抗張力２
９．０ＭＰａ、伸び率０％、以下、「ＳＦ４８０」と記
載する。）スルホン酸変性した、すなわちスルホン酸基
を有しポリエステル骨格を持つ芳香族アニオン性ポリウ
レタンエマルジョン（固形分濃度４５質量％、ｐＨ８、
フィルム抗張力３０ＭＰａ、伸び率６６５％、以下、
「Ｓ基含有ＰＵ」と記載する。）［以上、成分
（Ａ）］、と、熱膨張性微粒中空体［以上、成分
（Ｂ）］とを使用した以外は、実施例１と同様に水性接
着剤組成物を得た。なお、表１において、Ａ成分とＢ成
分の数値は質量部を示す。(Adhesives in Examples 2 to 6 and Comparative Examples 1 and 2) Panflex OM-4000 having the compounding amounts shown in Table 1
(Manufactured by Kuraray Co., Ltd., solid content concentration 56 mass%, pH 5, film tensile strength 4.0 MPa, elongation rate 1000%, "hereinafter referred to as OM4000"), EVA (1), Panflex OM-3100 ((Co) Made by Kuraray, solid content 5
6% by mass, pH 5, film tensile strength 1.5 MPa, elongation rate 3000% or more, hereinafter referred to as "OM-3100". ), Sumika Flex 480 (Sumitomo Chemical Co., Ltd.)
Made, solid content concentration 55 mass%, pH 5, film tensile strength 2
9.0 MPa, elongation rate 0%, hereinafter referred to as "SF480". ) Aromatic anionic polyurethane emulsion modified with sulfonic acid, that is, having a sulfonic acid group and having a polyester skeleton (solid content concentration 45% by mass, pH 8,
Film tensile strength 30 MPa, elongation 665%, below,
It describes as "S group containing PU." ) [The above, component (A)], and the thermally expansive fine particle hollow body [The above, component (B)] were used, and the water-based adhesive composition was obtained in the same manner as in Example 1. In addition, in Table 1, the numerical value of A component and B component shows a mass part.
【００６５】（実施例１〜６、比較例１〜２における接
着パネルサンプルの作製）
得られた水性接着剤組成物を、１２ｍｍ厚の石膏ボード
にゴムロールを用いて、１１０ｇ／ｍ2の塗布量となる
よう均一に塗布し、この水性接着剤組成物塗布面に１．
０ｍｍ厚の化粧金属板（接着面がリン酸により防錆処理
された鋼板）を貼り合わせた後、２２℃雰囲気下で０．
５ＭＰａの圧力で１時間圧締した。解圧後、同温度にて
５日間放置養生して、接着パネルサンプルを作製した。(Preparation of Adhesive Panel Samples in Examples 1 to 6 and Comparative Examples 1 and 2) The obtained water-based adhesive composition was coated on a gypsum board having a thickness of 12 mm with a rubber roll to give a coating amount of 110 g / m 2 . So that the water-based adhesive composition is coated with 1.
After bonding a 0 mm-thick decorative metal plate (a steel plate whose adhesive surface has been rust-proofed with phosphoric acid), it was subjected to a 0.
It was clamped at a pressure of 5 MPa for 1 hour. After the pressure was released, the adhesive panel sample was prepared by allowing it to cure for 5 days at the same temperature.
【００６６】[0066]
【表１】 [Table 1]
【００６７】このように実施例１〜４において、実用性
のある接着強さを有し、１５０℃以上の雰囲気下で遠赤
外線照射装置に２分間照射することで化粧金属板に接着
剤が付着していない、すなわち、界面剥離の状態で自然
剥離することが確認でき、さらに、紫外線照射でも同様
の効果が認められた。実施例５〜６において、スルホン
酸変性したアニオン性ポリウレタンエマルジョンを配合
することにより常態および耐湿熱接着強さが向上し、ト
ルエン不溶分が７０質量％以上のエチレン−酢酸ビニル
系共重合エマルジョンとの組み合わせにおいて特にその
効果が顕著に現れ、さらに、１５０℃以上の雰囲気下で
遠赤外線装置により２分間照射することで化粧金属板の
界面剥離の状態で自然剥離することが確認でき、さら
に、紫外線照射装置でも同様の効果が認められた。ま
た、実施例５〜６の水性接着剤組成物において、接着面
がエポキシ系樹脂（ポリマー）コートおよび燐酸による
防錆処理のみが施された鋼板である化粧金属板について
確認を行ったところ同様の効果が認められた。比較例１
〜２においては、（Ａ）成分のフィルムの抗張力が１〜
３０ＭＰａおよびフィルムの伸び率が１００〜２０００
％の範囲を逸脱する場合においては、再剥離できないこ
とが確認できた。As described above, in Examples 1 to 4, the far infrared ray irradiating apparatus was irradiated for 2 minutes in an atmosphere of 150 ° C. or more, which has a practical adhesive strength, so that the adhesive adhered to the decorative metal plate. It was confirmed that the film was not peeled off, that is, spontaneous peeling was carried out in the state of interfacial peeling, and the same effect was also observed by irradiation with ultraviolet rays. In Examples 5 to 6, by blending a sulfonic acid-modified anionic polyurethane emulsion, the normal state and the resistance to moist heat were improved, and the toluene-insoluble content was 70% by mass or more. It was confirmed that the effect was particularly remarkable in the combination, and further that natural peeling was performed in the state of interfacial peeling of the decorative metal plate by irradiating with a far infrared device for 2 minutes in an atmosphere of 150 ° C. or higher. The same effect was observed with the device. Further, in the water-based adhesive compositions of Examples 5 to 6, decorative metal plates whose adhesive surface was a steel plate only coated with an epoxy resin (polymer) and anticorrosive with phosphoric acid were confirmed. The effect was recognized. Comparative Example 1
In No. 2, the tensile strength of the film of the component (A) is 1 to
30 MPa and film elongation of 100 to 2000
It has been confirmed that re-peelment cannot be carried out in the case of exceeding the range of%.
【００６８】（常態接着強さ試験）
得られた接着パネルサンプルを２５ｍｍ角の貼り合わせ
部分が残るように切削加工し、２２℃雰囲気下にて、オ
ートグラフＡＧ−５０００Ａ（（株）島津製作所製）を
使用して、５０ｍｍ／分の速度で引っ張り剪断したとき
の接着強さを測定した。(Normal Adhesion Strength Test) The obtained adhesive panel sample was cut so that a 25 mm square bonded portion remained, and autograph AG-5000A (manufactured by Shimadzu Corporation) in an atmosphere at 22 ° C. ) Was used to measure the adhesive strength when pulled and sheared at a speed of 50 mm / min.
【００６９】（耐湿熱接着強さ試験）
得られた接着パネルサンプルを２５ｍｍ角の貼り合わせ
部分が残るように切削加工し、４０℃９０％ＲＨ雰囲気
下にて４８時間放置した後、直ちに、オートグラフＡＧ
−５０００Ａを使用して、５０ｍｍ／分の速度で引っ張
り剪断したときの接着強さを測定した。(Moisture and Heat Resistant Adhesive Strength Test) The obtained adhesive panel sample was cut so as to leave a 25 mm square bonded portion and left at 40 ° C. in 90% RH atmosphere for 48 hours, and then immediately subjected to auto test. Graph AG
-5000A was used to measure the bond strength when tensile sheared at a speed of 50 mm / min.
【００７０】（遠赤外線照射装置による再剥離試験）
得られた化粧板サンプルを１５０ｍｍ角に切断し、表１
に示す各温度に設定した遠赤外線ミニジェットＭＪＳ−
２００（（株）ジャード製）内を２分間通過させ、各温
度で再剥離状態を評価した。加熱温度１５０℃、１８０
℃ともに本発明の実施例はその評価はいずれも◎で遠赤
外線照射により極めて再剥離性を有することが判る。加
熱温度が１２０℃では、本発明の実施例は△であるが、
これは２分間の遠赤外線の照射におけるものであり、さ
らに長時間の照射、例えば１０分間の照射では、容易に
自然剥離する。(Removal test by far-infrared irradiation device) The obtained decorative board sample was cut into a 150 mm square and Table 1
Far infrared mini jet MJS-set to each temperature shown in
After passing through 200 (manufactured by Jard Co., Ltd.) for 2 minutes, the re-peeling state was evaluated at each temperature. Heating temperature 150 ℃, 180
The results of the examples of the present invention were both marked with ⊚ at both ° C and it was found that they had removability upon irradiation with far infrared rays. When the heating temperature is 120 ° C., the example of the present invention is Δ,
This is due to irradiation with far infrared rays for 2 minutes, and spontaneous irradiation is easily caused by irradiation for a longer time, for example, irradiation for 10 minutes.
【００７１】再剥離状態の評価は、次の基準に基づく。
◎：化粧金属板の自然剥離が発生し、放冷後も容易に化
粧金属板のみを剥離できる
○：化粧金属板の自然剥離が発生しないが、直に剥離す
ることで容易に化粧金属板のみを剥離でき、放冷後も容
易に化粧金属板のみを剥離できる
△：化粧金属板の自然剥離が発生しないが、直に剥離す
ることで容易に化粧金属板のみを剥離できるが、放冷後
に剥離すれば石膏ボードの紙破が発生する
×：化粧金属板の自然剥離が発生せず、直に剥離すると
化粧金属板側に接着剤が付着した、すなわち、凝集破壊
状態で剥離する
××：化粧金属板の自然剥離が発生せず、直に剥離する
と石膏ボードの紙破が発生する
の５段階で評価を行い、このうち本発明の実用的な範囲
は○以上である。The evaluation of the re-peeling state is based on the following criteria. ◎: Natural peeling of the decorative metal plate occurs, and only the decorative metal plate can be easily peeled off even after cooling. ○: Natural peeling of the decorative metal plate does not occur, but only the decorative metal plate can be easily peeled off directly. Can be peeled off and only the decorative metal plate can be peeled off easily after cooling. Δ: Natural peeling of the decorative metal plate does not occur, but it is possible to peel off only the decorative metal plate by direct peeling. If peeled off, paper breakage of the gypsum board occurs ×: Natural peeling of the decorative metal plate does not occur, and if it is directly peeled off, the adhesive adheres to the decorative metal plate side, that is, peels off in a cohesive failure state ××: The decorative metal plate was not peeled off spontaneously, and when it was peeled off directly, the gypsum board was broken. The evaluation was carried out on a scale of 5, and the practical range of the present invention is ◯ or more.
【００７２】（紫外線照射装置による再剥離試験）
得られた化粧板サンプルを１５０ｍｍ角に切断し、１５
０℃に調温した紫外線硬化装置パナキュアーＮＵＸ７３
２８Ｆ−４６７（松下電工（株）製）中を１０分間通過
させることで、再剥離状態を評価した。実施例１〜６と
もに評価は◎であった。(Removal test by UV irradiation device) The obtained decorative plate sample was cut into 150 mm square pieces and 15
UV curing device Panacure NUX73 whose temperature is adjusted to 0 ℃
28F-467 (manufactured by Matsushita Electric Works, Ltd.) was passed through for 10 minutes to evaluate the re-peeling state. The evaluation was ⊚ in each of Examples 1 to 6.
【００７３】再剥離状態の評価は、次の基準に基づく。
◎：化粧金属板の自然剥離が発生し、放冷後も容易に化
粧金属板のみを剥離できる
○：化粧金属板の自然剥離が発生しないが、直に剥離す
ることで容易に化粧金属板のみを剥離でき、放冷後も容
易に化粧金属板のみを剥離できる
△：化粧金属板の自然剥離が発生しないが、直に剥離す
ることで容易に化粧金属板のみを剥離できるが、放冷後
に剥離すれば石膏ボードの紙破が発生する
×：化粧金属板の自然剥離が発生せず、直に剥離すると
化粧金属板側に接着剤が付着した、すなわち、凝集破壊
状態で剥離する
××：化粧金属板の自然剥離が発生せず、直に剥離する
と石膏ボードの紙破が発生する。
の５段階で評価を行い、このうち本発明の実用的な範囲
は○以上であるThe evaluation of the re-peeling state is based on the following criteria. ◎: Natural peeling of the decorative metal plate occurs, and only the decorative metal plate can be easily peeled off even after cooling. ○: Natural peeling of the decorative metal plate does not occur, but only the decorative metal plate can be easily peeled off directly. Can be peeled off and only the decorative metal plate can be peeled off easily after cooling. Δ: Natural peeling of the decorative metal plate does not occur, but it is possible to peel off only the decorative metal plate by direct peeling. If peeled off, paper breakage of the gypsum board occurs ×: Natural peeling of the decorative metal plate does not occur, and if it is directly peeled off, the adhesive adheres to the decorative metal plate side, that is, peels off in a cohesive failure state ××: Natural peeling of the decorative metal plate does not occur, and direct peeling causes paper breakage of the gypsum board. The evaluation was carried out in 5 stages, of which the practical range of the present invention is ◯ or more.
【００７４】（熱風循環器による再剥離試験）
得られた化粧板サンプルを１５０ｍｍ角に切断し、楠本
化成（株）製熱風循環器ＨＩＳＰＥＣ ＨＴ２１０を１
５０℃に調温して、２０分間および２４時間放置後、再
剥離状態を評価した。いずれも評価は△で、遠赤外線あ
るいは紫外線照射する方法の方が単なる加熱によるもの
よりも優れていることが判る。(Re-peeling test by hot air circulator) The obtained decorative plate sample was cut into 150 mm square pieces, and a hot air circulator HISPEC HT210 manufactured by Kusumoto Kasei Co., Ltd.
After controlling the temperature at 50 ° C. and leaving it for 20 minutes and 24 hours, the state of re-peel was evaluated. In all cases, the evaluation is Δ, which shows that the method of irradiating far infrared rays or ultraviolet rays is superior to the method of mere heating.
【００７５】再剥離状態の評価は、次の基準に基づく。
◎：化粧金属板の自然剥離が発生し、放冷後も容易に化
粧金属板のみを剥離できる
○：化粧金属板の自然剥離が発生しないが、直に剥離す
ることで容易に化粧金属板のみを剥離でき、放冷後も容
易に化粧金属板のみを剥離できる
△：化粧金属板の自然剥離が発生しないが、直に剥離す
ることで容易に化粧金属板のみを剥離できるが、放冷後
に剥離すれば石膏ボードの紙破が発生する
×：化粧金属板の自然剥離が発生せず、直に剥離すると
化粧金属板側に接着剤が付着した、すなわち、凝集破壊
状態で剥離する
××：化粧金属板の自然剥離が発生せず、直に剥離する
と石膏ボードの紙破が発生する
の５段階で評価を行い、このうち本発明の実用的な範囲
は○以上である。The evaluation of the re-peeling state is based on the following criteria. ◎: Natural peeling of the decorative metal plate occurs, and only the decorative metal plate can be easily peeled off even after cooling. ○: Natural peeling of the decorative metal plate does not occur, but only the decorative metal plate can be easily peeled off directly. Can be peeled off and only the decorative metal plate can be peeled off easily after cooling. Δ: Natural peeling of the decorative metal plate does not occur, but it is possible to peel off only the decorative metal plate by direct peeling. If peeled off, paper breakage of the gypsum board occurs ×: Natural peeling of the decorative metal plate does not occur, and if it is directly peeled off, the adhesive adheres to the decorative metal plate side, that is, peels off in a cohesive failure state ××: The decorative metal plate was not peeled off spontaneously, and when it was peeled off directly, the gypsum board was broken. The evaluation was carried out on a scale of 5, and the practical range of the present invention is ◯ or more.
【００７６】（実施例７〜１２、比較例３〜４における
接着剤）
表２に示す実施例７〜１２、比較例３〜４の接着剤の配
合は、表１に示す実施例１〜６と同様である。この表２
の実験は、接着性と耐水性の差を明確に評価するため、
接着面が難接着であるエポキシコートされた１．０ｍｍ
厚の化粧金属板と、１０ｍｍ厚のコンクリートパネル用
合板（コンパネ合板）を用いて行った。(Adhesives in Examples 7 to 12 and Comparative Examples 3 to 4) Adhesives in Examples 7 to 12 and Comparative Examples 3 to 4 shown in Table 2 were compounded in Examples 1 to 6 shown in Table 1. Is the same as. This table 2
In order to clearly evaluate the difference between adhesion and water resistance,
Epoxy coated 1.0mm with difficult adhesion surface
A thick decorative metal plate and a 10 mm thick plywood for concrete panel (control panel plywood) were used.
【００７７】[0077]
【表２】 [Table 2]
【００７８】（実施例７〜１２、比較例３〜４における
接着パネルサンプルの作製）
得られた水性接着剤組成物を、１０ｍｍ厚のコンパネ合
板にゴムロールを用いて、１５０ｇ／ｍ2の塗布量とな
るよう均一に塗布し、この水性接着剤組成物塗布面に
１．０ｍｍ厚の化粧金属板（裏面エポキシコート鋼板）
を貼り合わせた後、２２℃雰囲気下で０．５ＭＰａの圧
力で３時間圧締した。解圧後、同温度にて５日間放置養
生して、接着パネルサンプルを作製した。(Preparation of Adhesive Panel Samples in Examples 7 to 12 and Comparative Examples 3 to 4) The obtained aqueous adhesive composition was coated on a 10 mm-thick control panel plywood with a rubber roll to give a coating amount of 150 g / m 2 . So that the water-based adhesive composition is applied on the decorative metal plate of 1.0 mm thickness (backside epoxy coated steel plate)
After they were bonded together, they were clamped at a pressure of 0.5 MPa in a 22 ° C. atmosphere for 3 hours. After the pressure was released, the adhesive panel sample was prepared by allowing it to cure for 5 days at the same temperature.
【００７９】（常態接着強さ試験）
得られた接着パネルサンプルをテストピースとした。こ
れをＪＡＳ特殊合板記載の平面引張り試験を用いて接着
試験を行った。２５ｍｍ角の貼り合わせ部分が残るよう
に切削加工し、２２℃雰囲気下にて、オートグラフＡＧ
−５０００Ａ（（株）島津製作所製）を使用して、５ｍ
ｍ／分の速度で引っ張り剪断したときの接着強さを測定
した。(Normal Adhesion Strength Test) The obtained adhesive panel sample was used as a test piece. This was subjected to an adhesion test using a plane tensile test described in JAS special plywood. Cut so that the 25 mm square bonded part remains, and autograph AG in an atmosphere of 22 ° C
5m using -5000A (manufactured by Shimadzu Corporation)
The adhesive strength when tensile and sheared at a speed of m / min was measured.
【００８０】（耐水接着強さ試験）
得られた接着パネルサンプルを常態接着強さ試験と同様
にテストピースをつくり、２３℃の室温水中に３時間浸
漬後、濡れたまま、直ちに、オートグラフＡＧ−５００
０Ａを使用して、５ｍｍ／分の速度で引っ張り剪断した
ときの接着強さを測定した。(Waterproof Adhesive Strength Test) A test piece was prepared from the obtained adhesive panel sample in the same manner as in the normal adhesive strength test, immersed in room temperature water at 23 ° C. for 3 hours, and immediately after being wet, Autograph AG -500
OA was used to measure the bond strength when tensile sheared at a rate of 5 mm / min.
【００８１】（遠赤外線照射装置による再剥離試験）
得られた化粧板サンプルを１５０ｍｍ角に切断し、実施
例１〜６と同様に遠赤外線ミニジェットＭＪＳ−２００
（（株）ジャード製）内を２分間通過させ、加熱温度を
１５０℃として評価した。評価基準は実施例１〜６と同
様である。(Re-peeling test by far-infrared irradiation device) The obtained decorative board sample was cut into 150 mm square pieces and the far-infrared mini-jet MJS-200 was cut in the same manner as in Examples 1 to 6.
(Jard Co., Ltd.) was passed through for 2 minutes, and the heating temperature was evaluated as 150 ° C. Evaluation criteria are the same as in Examples 1-6.
【００８２】[0082]
【発明の効果】以上説明したように、本発明は、接着剤
として（Ａ）乾燥後の形成フィルムの抗張力が１〜２８
ＭＰａ、伸び率１００〜２０００％の特性を有するポリ
マーを含有する水分散液および（Ｂ）熱膨張性微粒中空
体からなる水性接着剤組成物を用いて基材すなわち多孔
質ボードに表面材すなわち化粧金属板を接着した積層体
である接着パネルに加熱雰囲気下で遠赤外線あるいは紫
外線を照射することにより、単に外部加熱による剥離に
比して短い時間で、かつ、材破を生じることなく自然剥
離を可能とし、放冷後においても容易に表面材すなわち
化粧金属板のみを再剥離できるので、環境を害すること
なく基材である多孔質ボードと表面材である化粧金属板
からなる積層体すなわち接着パネル製の器機や設備を再
剥離して容易にリサイクルすることができるなど、従来
にない優れた効果を奏するものである。INDUSTRIAL APPLICABILITY As described above, according to the present invention, as the adhesive (A), the formed film after drying has a tensile strength of 1 to 28.
A base material, that is, a porous board, is provided with a surface material, that is, a makeup, by using an aqueous adhesive composition comprising an aqueous dispersion containing a polymer having a property of MPa and an elongation of 100 to 2000% and (B) a thermally expandable fine hollow particle. By irradiating far-infrared rays or ultraviolet rays to the adhesive panel, which is a laminated body to which metal plates are adhered, under a heating atmosphere, natural peeling can be performed in a shorter time than simply peeling by external heating and without causing material damage. Since the surface material, that is, the decorative metal plate can be easily peeled off even after being left to cool, a laminated body, that is, an adhesive panel composed of the porous board as the base material and the decorative metal plate as the surface material without damaging the environment. It has an excellent effect that has never been seen, such as that it can be easily peeled off by re-peeling the manufacturing equipment and equipment.
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ０９Ｊ 175/04 Ｃ０９Ｊ 175/04 (72)発明者 松下 真一郎 大阪市中央区平野町２丁目１番２号沢の 鶴ビル５階 コニシ株式会社本社ボンド 事業本部内 (72)発明者 濱多 慶一 大阪市鶴見区鶴見４丁目７番９号 コニ シ株式会社大阪研究所内 (56)参考文献 特開 平10−81865（ＪＰ，Ａ) 特開 平９−194811（ＪＰ，Ａ) 特開 昭61−101578（ＪＰ，Ａ) 特開 平７−92913（ＪＰ，Ａ) 特開 平７−138538（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 1/00 - 35/00 C09J 1/00 - 201/10 Continuation of front page (51) Int.Cl. 7 Identification code FI C09J 175/04 C09J 175/04 (72) Inventor Shinichiro Matsushita 2-1-2, Hiranocho, Chuo-ku, Osaka Sawa Tsuru Building 5F Konishi stock Company Headquarters Bond Business Headquarters (72) Inventor Keiichi Hamata 4-7-9 Tsurumi, Tsurumi-ku, Osaka City Konishi Co., Ltd. (56) Reference JP-A-10-81865 (JP, A) Hei 9-194811 (JP, A) JP 61-101578 (JP, A) JP 7-92913 (JP, A) JP 7-138538 (JP, A) (58) Fields investigated (Int .Cl. 7 , DB name) B32B 1/00-35/00 C09J 1/00-201/10
Claims (11)
ボードからなる基材を（Ａ）乾燥後の形成フィルムの抗
張力が１〜２８ＭＰａ、伸び率１００〜２０００％の特
性を有するポリマーを含有する水分散液および（Ｂ）熱
膨張性微粒中空体からなる水性接着剤組成物により接着
してなる接着パネルであることを特徴とする再剥離可能
な積層体。1. A surface material and a porous material made of a decorative metal plate.
(A) An aqueous dispersion containing a polymer having a tensile strength of a formed film after drying a base material made of a board of 1 to 28 MPa and an elongation of 100 to 2000%, and (B) a thermally expandable fine particle hollow body. bonded by aqueous adhesive composition
A releasable laminate, which is an adhesive panel obtained by
液は、ポリ酢酸ビニル系ポリマー、ウレタン系ポリマ
ー、アクリル系ポリマー、シリコーン系ポリマー、クロ
ロプレンエラストマー、スチレンブタジエンエラストマ
ーから選択した１種以上のポリマーからなることを特徴
とする請求項１に記載の再剥離可能な積層体。2. An aqueous dispersion containing a polymer as the component (A) comprises at least one selected from polyvinyl acetate-based polymers, urethane-based polymers, acrylic-based polymers, silicone-based polymers, chloroprene elastomers and styrene-butadiene elastomers. The removable laminate according to claim 1, which is made of a polymer.
液は、エチレン−酢酸ビニル系共重合体エマルジョンか
らなることを特徴とする請求項１に記載の再剥離可能な
積層体。3. The releasable laminate according to claim 1 , wherein the aqueous dispersion containing the polymer as the component (A) comprises an ethylene-vinyl acetate copolymer emulsion.
液は、エチレン−酢酸ビニル系共重合体エマルジョンと
アニオン性ポリウレタンエマルジョンからなることを特
徴とする請求項１に記載の再剥離可能な積層体。4. The removable according to claim 1 , wherein the aqueous dispersion containing the polymer as the component (A) comprises an ethylene-vinyl acetate copolymer emulsion and an anionic polyurethane emulsion. Laminate.
は、スルホン酸変性したアニオン性ポリウレタンエマル
ジョンであることを特徴とする請求項４に記載の再剥離
可能な積層体。5. The releasable laminate according to claim 4 , wherein the anionic polyurethane emulsion is a sulfonic acid-modified anionic polyurethane emulsion.
液は、そのポリマー固形分１００質量部に対して、
（Ｂ）成分の熱膨張性微粒中空体を２〜１００質量部を
配合してなることを特徴とする請求項１〜５のいずれか
１項に記載の再剥離可能な積層体。6. An aqueous dispersion containing a polymer as the component (A) is based on 100 parts by mass of the polymer solid content.
The releasable laminate according to any one of claims 1 to 5 , which comprises 2 to 100 parts by mass of the thermally expandable fine particle hollow body as the component (B).
泡倍率が２０〜１００倍で有り、発泡開始温度が９０〜
１５０℃であることを特徴とする請求項１〜６のいずれ
か１項に記載の再剥離可能な積層体。7. The thermally expandable fine hollow particles of the component (B) have a foaming ratio of 20 to 100 and a foaming start temperature of 90 to 100.
It is 150 degreeC , The re-peelable laminated body of any one of Claims 1-6 characterized by the above-mentioned.
剥離可能な積層体に対し加熱炉内で遠赤外線照射を行う
ことを特徴とする積層体の再剥離方法。8. A method for re-peeling a laminate, which comprises irradiating far-infrared rays to the re-peelable laminate according to any one of claims 1 to 7 in a heating furnace.
赤外線を照射することを特徴とする請求項８に記載の積
層体の再剥離方法。9. The method for re-peeling a laminate according to claim 8 , wherein the irradiation with far infrared rays is irradiation with far infrared rays having a wavelength of 5 to 30 μm.
調整し、遠赤外線照射を２分間以上継続することによ
り、化粧金属板を多孔質ボードから自然剥離させること
を特徴とする請求項８または９に記載の積層体の再剥離
方法。10. A heating furnace to adjust the atmosphere than 0.99 ° C., by continuing far infrared radiation more than 2 minutes, claim 8, characterized in that to naturally peel the decorative metal plate from porous board Alternatively, the method for re-peeling the laminate according to item 9 .
再剥離可能な積層体に対し加熱炉内で紫外線照射を行う
ことを特徴とする積層体の再剥離方法。11. A method for re-peeling a laminate, which comprises irradiating the re-peeable laminate according to claim 1 with an ultraviolet ray in a heating furnace.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000323255A JP3413401B2 (en) | 2000-10-23 | 2000-10-23 | Removable laminate and method for removing the same |
| TW90125756A TW490373B (en) | 2000-10-23 | 2001-10-18 | Laminate with a peelable top layer and method of peeling off the top layer from the laminate |
| DE2001626884 DE60126884T2 (en) | 2000-10-23 | 2001-10-22 | Peelable top laminate and method of peeling the top layer from the laminate |
| US09/982,782 US6908654B2 (en) | 2000-10-23 | 2001-10-22 | Laminate with a peelable top layer and a method of peeling off the top layer from the laminate |
| EP20010125063 EP1201422B1 (en) | 2000-10-23 | 2001-10-22 | Laminate with a peelable top layer and method of peeling off the top layer from the laminate |
| KR10-2001-0065330A KR100460233B1 (en) | 2000-10-23 | 2001-10-23 | Laminate with a peelable top layer and method of peeling off the top layer from the laminate |
| CNB011367431A CN100469567C (en) | 2000-10-23 | 2001-10-23 | Laminated board with stripping surface layer and method for stripping surface layer from laminated board |
| US10/885,735 US6951677B2 (en) | 2000-10-23 | 2004-07-08 | Laminate with a peelable top layer and method of peeling off the top layer from the laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000323255A JP3413401B2 (en) | 2000-10-23 | 2000-10-23 | Removable laminate and method for removing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002127290A JP2002127290A (en) | 2002-05-08 |
| JP3413401B2 true JP3413401B2 (en) | 2003-06-03 |
Family
ID=18800980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000323255A Expired - Fee Related JP3413401B2 (en) | 2000-10-23 | 2000-10-23 | Removable laminate and method for removing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3413401B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3629021B2 (en) * | 2001-09-28 | 2005-03-16 | 化研テック株式会社 | Thermally peelable adhesive structure |
| WO2004087826A2 (en) * | 2003-04-01 | 2004-10-14 | De-Bonding Limited | Method and apparatus for bonding and debonding adhesive interface surfaces |
| JP4886259B2 (en) * | 2005-09-27 | 2012-02-29 | 積水化学工業株式会社 | Water-based adhesive |
| JP5535134B2 (en) * | 2011-06-09 | 2014-07-02 | 東洋アドレ株式会社 | Heat-peelable water-based adhesive |
-
2000
- 2000-10-23 JP JP2000323255A patent/JP3413401B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002127290A (en) | 2002-05-08 |
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