JP2018512477A - 真空熱成形用接着剤組成物及びこれを適用した真空熱成形用デコレーションシート - Google Patents
真空熱成形用接着剤組成物及びこれを適用した真空熱成形用デコレーションシート Download PDFInfo
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- JP2018512477A JP2018512477A JP2017546671A JP2017546671A JP2018512477A JP 2018512477 A JP2018512477 A JP 2018512477A JP 2017546671 A JP2017546671 A JP 2017546671A JP 2017546671 A JP2017546671 A JP 2017546671A JP 2018512477 A JP2018512477 A JP 2018512477A
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Classifications
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C09J175/04—Polyurethanes
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- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
Description
真空熱成形工法は、自動車、家具など、様々な内外装材を飾るためにデコレーションシートを射出物に加飾する工法の一つである。前記真空熱成形方法は、高温かつ真空の条件下で行われるため、この過程で前記デコレーションシートが射出物に良く融着されるように、優れた接着性を有するとともに高温耐久性を有する接着層を具現することは重要な問題である。
本発明は、接着層;前記接着層の上部に形成された基材層;前記基材層の上部に形成された印刷層;及び前記印刷層の上部に形成された透明基材層を含み、前記接着層は、前述の真空熱成形用接着剤組成物で形成された真空熱成形用デコレーションシートを提供する。
1.接着剤組成物製造
1)アクリルポリマー合成
窒素ガスが還流して、温度調節が容易であるように冷却装置を配設した2L反応機に、2−エチルヘキシルアクリレート(2−EHA)20重量部、n−ブチルアクリレート40重量部(n−BA)イソボルニルアクリレート(IBOA)30重量部、2−ヒドロキシエチルアクリレート(EHA)10重量部、分子量調節剤n−ドデシルメルカプタン0.05重量部に対して、単量体混合物を投入して、溶剤としてメチルエチルケトン(MEK)を投入し、重量平均分子量が60万であり、ガラス転移温度が−26℃であるアクリルポリマーを製造した。
窒素ガスが還流して、温度調節が容易であるように冷却装置を配設した2L反応機に、ポリプロピレングリコール(polypropylene glycol )900gと無水マレイン酸500g、無水フタル酸500gを縮合反応させる。縮合反応が完了すると、メチルエチルケトン(MEK)を加えて粘度を低くする。ここにキシレンジイソシアネート(xylene diisoeyanate)0.5モルとバクセンデン社(Baxenden)のブロックイソシアネートBI7990を投入して、1液型ポリウレタンポリマーを合成した。
0.15mm厚さのアクリロニトリル−ブタジエン−スチレン(ABS)基材層の上部に、グラビア印刷方法を通じて20μm厚さの印刷層を形成した。前記印刷層の上部に、10μm厚さのポリメチルメタクリレート(PMMA)透明基材層を形成して、前記透明基材層の上部にUVインプリント方法でエンボス層を形成した。一方、50μm厚さのポリエチレンテレフタラート(PET)離型フィルム層を準備し、前記離型フィルム層の上部に前記実施例及び比較例において製造された接着剤組成物を塗布して、35μm厚さの接着層を製造した。次いで、前記基材層の下部に前記接着層が付着するように合板して、真空熱成形用デコレーションシート製造を完了した。
前記ポリウレタンポリマー90重量部と前記アクリルポリマー10重量部を配合して接着剤組成物を製造した以外は、前記実施例1と同じ方法でデコレーションシートを製造した。
前記ポリウレタンポリマー80重量部と前記アクリルポリマー20重量部を配合して接着剤組成物を製造した以外は、前記実施例1と同じ方法でデコレーションシートを製造した。
前記ポリウレタンポリマー100重量部を配合して接着剤組成物を製造した以外は、前記実施例1と同じ方法でデコレーションシートを製造した。
ポリウレタンの合成過程において、バクセンデン社(Baxenden)のブロックイソシアネートBI7990を除いて製造した後、前記ポリウレタンポリマー90重量部と前記アクリルポリマー10重量部を配合して接着剤組成物を製造した以外は、前記実施例1と同じ方法でデコレーションシートを製造した。
下記の方法で評価して、結果を表1に表した。
真空熱成形用デコレーションシートを25mm×20cm(横×縦)のサイズで裁断して試片を製造する。その後、前記試片の離型フィルムを除去して、ABS基材面にラミネーターで130℃熱を加えて熱ラミネートした後、付着して30分経過した時点で、引張試験機を使用して300mm/minの剥離速度及び180゜の剥離角度の条件で剥離力を測定した。
実施例及び比較例において製造された真空熱成形用デコレーションシートで離型フィルムを除去して、真空熱成形方法でサンプルを製作した。高温耐久性評価は、80℃で300時間の間、オーブンに真空熱成形方法で製作したサンプルを放置し、成形品と前記シートのエッジ部分の仕上げと浮きの有無を観察して、下記の基準に従って評価した。
○:浮きが観察されていない
×:浮きが観察されている
JIS K 5600−5−6によって付着性評価を行う。実施例及び比較例による試片の表面に図面のようにクロスカットする。その後、表面を柔らかいブラシできれいにし、規定テープ(JIS Z 1522)を堅く付着させた後、テープを90゜の角度で強く引き剥がす。判定は、次の基準に従う(図3参照)。
○:Cross−cut影響を受けた剥離の損傷なし。
△:Cross−cut影響を受けた剥離の5−15%剥離。
×:Cross−cut影響を受けた剥離が全部剥離。
成形条件は、フィルム実測温度150℃にして真空熱成形を行った。屈曲の部分で成形が良く行われるか否かを確認し、成形品及びフィルムがEdge部分において内側に良く巻かれているか否かを評価した(図4参照)。
<評価基準>
○:屈曲の部分に成形が良く行われた。Edge部分が内方に良く巻かれている。
×:成形が良く行われず、Edge部分の巻きも不足である。
10:接着層
20:基材層
30:印刷層
40:透明基材層
1:離型フィルム層
2:エンボス層
Claims (18)
- ポリウレタンポリマー及びアクリルポリマーを含み、溶融温度及び架橋温度の差が30℃ないし60℃である、
真空熱成形用接着剤組成物。 - 前記溶融温度は50℃ないし90℃であり、前記架橋温度は110℃ないし150℃である、
請求項1に記載の真空熱成形用接着剤組成物。 - 前記接着剤組成物の固形分100重量部に対して、前記アクリルポリマーを1ないし10重量部含む、
請求項1に記載の真空熱成形用接着剤組成物。 - 前記アクリルポリマーは、重量平均分子量が200,000ないし800,000である、
請求項1に記載の真空熱成形用接着剤組成物。 - 前記接着剤組成物の固形分100重量部に対して、前記ポリウレタンポリマーを90ないし99重量部含む、
請求項1に記載の真空熱成形用接着剤組成物。 - 前記ポリウレタンポリマーは、重量平均分子量が1,000ないし30,000である、
請求項1に記載の真空熱成形用接着剤組成物。 - 前記ポリウレタンポリマーが、イソシアネート化合物及びポリオール化合物から製造された、
請求項1に記載の真空熱成形用接着剤組成物。 - 前記ポリオール化合物は、ポリエステル系ポリオール、ラクトン系ポリオール、ポリカーボネート系ポリオール、ポリエーテル系ポリオール、及びこれらの組み合わせで形成された群から選択された一つ以上を含む、
請求項7に記載の真空熱成形用接着剤組成物。 - 接着性付与樹脂、低分子量体、エポキシ樹脂、硬化剤、紫外線安定剤、酸化防止剤、調色制、補強剤、消泡剤、界面活性剤、可塑剤、発泡剤、有機塩、及びこれらの組み合わせからなる群で選択された少なくとも一つを含む添加剤をさらに含む、
請求項1に記載の真空熱成形用接着剤組成物。 - 前記接着剤組成物は、粘度が800ないし7,000cpsである、
請求項1に記載の真空熱成形用接着剤組成物。 - 接着層;
前記接着層の上部に形成された基材層;
前記基材層の上部に形成された印刷層;及び
前記印刷層の上部に形成された透明基材層を含み、
前記接着層は、第1項ないし第10項のいずれか1項による真空熱成形用接着剤組成物で形成された、
真空熱成形用デコレーションシート。 - 前記接着層の厚さは10μmないし50μmである、
請求項11に記載の真空熱成形用デコレーションシート。 - 前記基材層は、ポリメチルメタクリレート(PMMA)、アクリロニトリル−ブタジエン−スチレン(ABS)、熱可塑性ポリオレフィン(TPO)、ポリ塩化ビニル(PVC)、ポリカーボネート(PC)、及びこれらの組み合わせからなる群で選択された一つを含む、
請求項11に記載の真空熱成形用デコレーションシート。 - 前記接着層の下部に離型フィルム層をさらに含む、
請求項11に記載の真空熱成形用デコレーションシート。 - 前記離型フィルム層は、ポリエチレンテレフタラート(PET)フィルムを含む、
請求項14に記載の真空熱成形用デコレーションシート。 - 前記印刷層は、グラビア印刷、フレキソ印刷、またはロータリースクリーン印刷、及びこれらの組み合わせからなる群で選択された少なくとも一つの方法を利用して形成された、
請求項11に記載の真空熱成形用デコレーションシート。 - 前記透明基材層の上部にエンボス層をさらに含む、
請求項11に記載の真空熱成形用デコレーションシート。 - 前記エンボス層は、エンボシング工程を利用して形成された、
請求項17に記載の真空熱成形用デコレーションシート。
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PCT/KR2016/001673 WO2016140452A2 (ko) | 2015-03-05 | 2016-02-19 | 진공 열 성형용 접착제 조성물 및 이를 적용한 진공 열 성형용 데코레이션 시트 |
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KR102314948B1 (ko) * | 2018-11-23 | 2021-10-21 | 주식회사 엘지화학 | 윈도우 데코 필름용 점착 시트 및 이를 포함하는 윈도우 데코 필름 |
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KR101981937B1 (ko) | 2019-05-28 |
WO2016140452A2 (ko) | 2016-09-09 |
US10344193B2 (en) | 2019-07-09 |
WO2016140452A3 (ko) | 2016-10-27 |
US20180051195A1 (en) | 2018-02-22 |
CN107406733A (zh) | 2017-11-28 |
CN107406733B (zh) | 2021-01-08 |
JP6657246B2 (ja) | 2020-03-04 |
TWI696678B (zh) | 2020-06-21 |
EP3266846A2 (en) | 2018-01-10 |
KR20160108702A (ko) | 2016-09-20 |
TW201632602A (zh) | 2016-09-16 |
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