JP2018111744A - 粘着体 - Google Patents
粘着体 Download PDFInfo
- Publication number
- JP2018111744A JP2018111744A JP2017001277A JP2017001277A JP2018111744A JP 2018111744 A JP2018111744 A JP 2018111744A JP 2017001277 A JP2017001277 A JP 2017001277A JP 2017001277 A JP2017001277 A JP 2017001277A JP 2018111744 A JP2018111744 A JP 2018111744A
- Authority
- JP
- Japan
- Prior art keywords
- sensitive adhesive
- pressure
- oil
- adhesive
- mass
- 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.)
- Granted
Links
- 239000000853 adhesive Substances 0.000 title claims abstract description 80
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 80
- 239000011358 absorbing material Substances 0.000 claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 161
- 239000010410 layer Substances 0.000 claims description 56
- 239000004014 plasticizer Substances 0.000 claims description 30
- 239000002250 absorbent Substances 0.000 claims description 16
- 230000002745 absorbent Effects 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 14
- 239000000178 monomer Substances 0.000 claims description 13
- 125000004432 carbon atom Chemical group C* 0.000 claims description 12
- 125000001931 aliphatic group Chemical group 0.000 claims description 7
- 239000000470 constituent Substances 0.000 claims description 7
- 125000002947 alkylene group Chemical group 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 25
- 239000002313 adhesive film Substances 0.000 abstract description 14
- 239000012790 adhesive layer Substances 0.000 abstract description 14
- 239000003921 oil Substances 0.000 description 108
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- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
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- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 2
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- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 2
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- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
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- 238000007254 oxidation reaction Methods 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
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- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 2
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- HASUCEDGKYJBDC-UHFFFAOYSA-N 1-[3-[[bis(oxiran-2-ylmethyl)amino]methyl]cyclohexyl]-n,n-bis(oxiran-2-ylmethyl)methanamine Chemical compound C1OC1CN(CC1CC(CN(CC2OC2)CC2OC2)CCC1)CC1CO1 HASUCEDGKYJBDC-UHFFFAOYSA-N 0.000 description 1
- KQSMCAVKSJWMSI-UHFFFAOYSA-N 2,4-dimethyl-1-n,1-n,3-n,3-n-tetrakis(oxiran-2-ylmethyl)benzene-1,3-diamine Chemical compound CC1=C(N(CC2OC2)CC2OC2)C(C)=CC=C1N(CC1OC1)CC1CO1 KQSMCAVKSJWMSI-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- YEVQZPWSVWZAOB-UHFFFAOYSA-N 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(I)C(CBr)=C1 YEVQZPWSVWZAOB-UHFFFAOYSA-N 0.000 description 1
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
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- XBIUWALDKXACEA-UHFFFAOYSA-N 3-[bis(2,4-dioxopentan-3-yl)alumanyl]pentane-2,4-dione Chemical compound CC(=O)C(C(C)=O)[Al](C(C(C)=O)C(C)=O)C(C(C)=O)C(C)=O XBIUWALDKXACEA-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
(1) 基材と、
粘着剤およびオイルを吸収する機能を有するオイル吸収材を含む再剥離型の粘着剤層とを備え、
前記オイル吸収材として多孔質体を含むことを特徴とする粘着体。
(2) 前記多孔質体は、多孔質シリカである上記(1)に記載の粘着体。
[再剥離型粘着剤組成物]
まず、本発明の粘着体の製造に好適に用いることができる再剥離型粘着剤組成物について説明する。
これにより、被着体に対する粘着性をより優れたものとすることができる。
これにより、前述したような効果がより顕著に発揮される。
これにより、前述したような効果がより顕著に発揮される。
これにより、前述したような効果がより顕著に発揮される。
なお、粘着剤としては、溶剤型、エマルジョン型のいずれを用いてもよい。
多孔質体が凝集体としての粒子状のものである場合、当該多孔質体の平均粒径(2次粒子径)は、0.1μm以上30μm以下であるのが好ましく、1.0μm以上15μm以下であるのがより好ましい。
これにより、前述した効果がより顕著に発揮される。
また、複数種の多孔質体を組み合わせて用いてもよい。
これにより、再剥離型粘着剤組成物の柔軟性、弾性をより優れたものとすることができる。また、再剥離型粘着剤組成物を用いて形成される粘着剤層の再剥離性をより優れたものとすることができ、再剥離型粘着剤組成物を用いて製造された粘着体(例えば、粘着フィルム)を被着体から剥離する際の手めくり感をより優れたものとすることができる。
次に、本発明の粘着体について説明する。
なお、本明細書において、「粘着フィルム」には粘着シート、粘着テープ及び粘着ラベルの概念が含まれるものとする。
基材1は、例えば、緻密体のほか、織布、不織布、紙、多孔質体、ポリプロピレンやポリエステル等の合成紙、発泡体等、いかなる形態のものであってもよい。
また、プライマー処理を施すこともできる。
次に、本発明の粘着フィルムの製造方法について説明する。
そして、粘着剤層2を形成する。粘着剤層2の形成方法は、特に限定されないが、用意した基材1の一方の面上に、前述した再剥離型粘着剤組成物を付与することにより好適に形成することができる。
塗工液の塗膜を乾燥させることにより、粘着剤層2を形成することができる。
(実施例1)
表1に示すようなモノマー組成を有し、重量平均分子量が80万であるアクリル系共重合体(アクリル系粘着剤)と、エポキシ系架橋剤としてのテトラッドC(三菱ガス化学社製)と、オイル吸収材(多孔質体)としての多孔質シリカ(AGCエスアイテック社製、サンスフェアH−33)と、可塑剤としての下記式(4)で示される化合物と、溶媒としてのトルエンとを混合し、塗工液としての粘着剤組成物(再剥離型粘着剤組成物)を調製した。
次に、この粘着剤層に、表面にコロナ処理が施された、厚さ50μmのポリエチレンテレフタレート製のフィルム状の基材を貼り合せ、温度23℃、相対湿度50%の条件で1週間熟成して粘着剤層を架橋させることで、剥離ライナーで粘着剤層が保護された粘着フィルムを得た。膜厚は、マイクロゲージにて測定した。
粘着剤の組成、粘着剤組成物の組成、粘着フィルムの構成を表1に示すようにした以外は、実施例1と同様にして粘着フィルムを製造した。
粘着剤の組成、粘着剤組成物の組成、粘着フィルムの構成を表1に示すようにした以外は、実施例1と同様にして粘着フィルムを製造した。
<初期粘着力(オイルと接触していない状態における粘着力)>
前記各実施例および比較例の粘着フィルム(剥離ライナーで保護された状態の粘着フィルム)を、幅25mm×縦150mmの大きさに切断し、試験片とした。
B:粘着力(初期粘着力)が3N/25mm以上4N/25mm未満(ただし、Aの範囲を除く)。
C:粘着力(初期粘着力)が2N/25mm以上3N/25mm未満(ただし、AおよびBの範囲を除く)。
D:粘着力(初期粘着力)が1N/25mm以上2N/25mm未満(ただし、A、BおよびCの範囲を除く)。
E:粘着力(初期粘着力)が1N/25mm未満または7N/25mm以上。
前記各実施例および比較例の粘着フィルム(剥離ライナーで保護された状態の粘着フィルム)を、幅25mm×縦150mmの大きさに切断し、試験片とした。
B:粘着力(オイル接触後粘着力)が初期粘着力の50%以上75%未満である。
C:粘着力(オイル接触後粘着力)が初期粘着力の25%以上50%未満である。
D:粘着力(オイル接触後粘着力)が初期粘着力の10%以上25%未満である。
E:粘着力(オイル接触後粘着力)が初期粘着力の10%未満である。
これらの結果を、表2にまとめて示す。
1…基材
2…粘着剤層
Claims (5)
- 基材と、
粘着剤およびオイルを吸収する機能を有するオイル吸収材を含む再剥離型の粘着剤層とを備え、
前記オイル吸収材として多孔質体を含むことを特徴とする粘着体。 - 前記多孔質体は、多孔質シリカである請求項1に記載の粘着体。
- 前記粘着剤100質量部に対する前記オイル吸収材の含有率が、0.1質量部以上50質量部以下である請求項1または2に記載の粘着体。
- 前記粘着剤は、炭素数が5以上の脂肪族炭化水素基を有するモノマーを構成成分として含むものである請求項1ないし3のいずれか1項に記載の粘着体。
- 前記粘着剤層は、炭素数が4以上のアルキレン基を分子内に有する可塑剤をさらに含むものである請求項1ないし4のいずれか1項に記載の粘着体。
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