JP2020500251A - 高分子フォーム粘着テープおよびこれを含む感圧型タッチパネル - Google Patents
高分子フォーム粘着テープおよびこれを含む感圧型タッチパネル Download PDFInfo
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Abstract
Description
[式1]
圧縮率(%)={(圧力を加える前の厚さ−圧力を加えた後の厚さ)/圧力を加える前の厚さ}×100
[式2]
厚さ回復率(%)={(圧力を加える前の厚さ−圧力が除去された後の厚さ)/(圧力を加える前の厚さ−圧力を加えた後の厚さ)}×100
ウレタン系フォーム層を形成するために、ポリオール混合物(重量平均分子量4,000のポリエーテル系モノマー18wt%、重量平均分子量2,000のポリエーテル系モノマー34wt%、重量平均分子量2,000のポリエステル系モノマー19wt%、重量平均分子量1,000のポリエステル系モノマー19wt%および鎖延長剤10wt%)100重量部に硬化剤28重量部、顔料2重量部、充填剤10重量部、界面活性剤2重量部および硬化反応のための触媒0.05重量部を混合して準備し、その後、Rotor−Statorタイプのミキサーで攪拌して気孔を形成した後、熱による硬化工程により、厚さ125μm、密度0.24g/cm3のウレタン系フォーム層を製造した。
ウレタン系フォーム層を形成するために、ポリオール混合物(重量平均分子量4,000のポリエーテル系モノマー22wt%、重量平均分子量2,000のポリエーテル系モノマー38wt%、重量平均分子量2,000のポリエステル系モノマー15wt%、重量平均分子量1,000のポリエステル系モノマー15wt%および鎖延長剤10wt%)100重量部に硬化剤25重量部、顔料2重量部、充填剤10重量部、界面活性剤2重量部および硬化反応のための触媒0.05重量部を混合して準備し、その後、Rotor−Statorタイプのミキサーで攪拌して気孔を形成した後、熱による硬化工程により、厚さ125μm、密度0.24g/cm3のウレタン系フォーム層を製造した。
90重量%のエチルヘキシルアクリレート、10重量%のアクリル酸を含むアクリル組成物を準備し、アクリル組成物100重量部に0.1重量部の光開始剤(Irgacure 651、BASF)、1.5重量部の硬化剤(SUO−1020、Shin−a T&C)、2重量部の界面活性剤を混合した後、Rotor−Statorタイプのミキサーを用いて気体を混合した。さらに、準備したアクリル組成物に総5.5W/cm2のUVを照射して硬化させることにより、厚さ125μm、密度0.28g/cm3のアクリル系フォーム層を製造した。
80重量%のエチルヘキシルアクリレート、10重量%のアクリル酸、10重量%のヒドロキシルエチルアクリレートを含むアクリル組成物を準備し、アクリル組成物100重量部に0.1重量部の光開始剤(Irgacure 651、BASF)、1.5重量部の硬化剤(SUO−1020、Shin−a T&C)、2重量部の界面活性剤を混合した後、Rotor−Statorタイプのミキサーを用いて気体を混合した。さらに、準備したアクリル組成物に総5.5W/cm2のUVを照射して硬化させることにより、厚さ125μm、密度0.28g/cm3のアクリル系フォーム層を製造した。
ウレタン系フォーム層を形成するために、ポリオール混合物(重量平均分子量4,000のポリエーテル系モノマー9wt%、重量平均分子量2,000のポリエーテル系モノマー17wt%、重量平均分子量2,000のポリエステル系モノマー32wt%、重量平均分子量1,000のポリエステル系モノマー32wt%および鎖延長剤10wt%)100重量部に硬化剤28重量部、顔料2重量部、充填剤10重量部、界面活性剤2重量部および硬化反応のための触媒0.05重量部を混合して準備し、その後、Rotor−Statorタイプのミキサーで攪拌して気孔を形成した後、熱による硬化工程により、厚さ125μm、密度0.24g/cm3のウレタン系フォーム層を製造した。
98重量%のエチルヘキシルアクリレート、2重量%のアクリル酸を含むアクリル組成物を準備し、アクリル組成物100重量部に0.1重量部の光開始剤(Irgacure
651、BASF)、1.5重量部の硬化剤(SUO−1020、Shin−a T&C)、2重量部の界面活性剤を混合した後、Rotor−Statorタイプのミキサーを用いて気体を混合した。さらに、準備したアクリル組成物に総5.5W/cm2のUVを照射して硬化させることにより、厚さ125μm、密度0.28g/cm3のアクリル系フォーム層を製造した。
ゴム系フォームを形成するために、固形分30%の合成ゴム分散液(NBR、LG化学)組成物を準備し、NBR組成物100重量部に2重量部の界面活性剤を混合した後、Rotor−Statorタイプのミキサーを用いて気体を混合した。上記のように準備した組成物に85℃で2.5分間、150℃で2.5分間乾燥させることにより、厚さ125μmのゴム系フォームフィルムを製造した。
実施例1〜4および比較例1〜3で準備された高分子フォーム粘着テープの両面をガラス基材に付着し、混入された空気層を除去するために50℃および5barの条件で20分間圧着した後、常温で2時間放置した。その後、厚さゲージで圧着前厚さを測定した。
200 高分子フォーム層
300 第1粘着層
400 第2粘着層
Claims (10)
- 高分子フォーム粘着テープであって、
基材フィルム、前記基材フィルムの一面上に備えられた高分子フォーム層、前記高分子フォーム層上に備えられた第1粘着層、および前記基材フィルムの他面上に備えられた第2粘着層を含み、
前記高分子フォーム粘着テープの誘電率は105Hzの周波数で2.5以上4.5以下である高分子フォーム粘着テープ。 - 前記基材フィルムの厚さは10μm以上250μm以下である、請求項1に記載の高分子フォーム粘着テープ。
- 前記高分子フォーム層の厚さは75μm以上1,000μm以下である、請求項1に記載の高分子フォーム粘着テープ。
- 前記基材フィルムと前記高分子フォーム層の総厚さは100μm以上1,000μm以下である、請求項1に記載の高分子フォーム粘着テープ。
- 前記高分子フォーム粘着テープの最大圧縮率は30%以上70%以下である、請求項1に記載の高分子フォーム粘着テープ。
- 前記高分子フォーム粘着テープの圧縮復元率は90%以上であり、90%の圧縮復元時間は0.1秒以内である、請求項1に記載の高分子フォーム粘着テープ。
- 前記高分子フォーム粘着テープの最終圧縮復元率は99%以上であり、99%の圧縮復元時間は1.0秒以内である、請求項1に記載の高分子フォーム粘着テープ。
- 前記高分子フォーム粘着テープの最小圧縮荷重は30g以上300g以下である、請求項1に記載の高分子フォーム粘着テープ。
- 前記高分子フォーム粘着テープは感圧型タッチパネル用である、請求項1に記載の高分子フォーム粘着テープ。
- 請求項1に記載の高分子フォーム粘着テープを含む感圧型タッチパネル。
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KR102017010B1 (ko) | 2019-09-03 |
KR20180046381A (ko) | 2018-05-08 |
US20190258342A1 (en) | 2019-08-22 |
JP6740485B2 (ja) | 2020-08-12 |
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