JP5882496B2 - ガラス基板の代用として使用可能な高強度透明プラスチックシート及びその製造方法 - Google Patents
ガラス基板の代用として使用可能な高強度透明プラスチックシート及びその製造方法 Download PDFInfo
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- JP5882496B2 JP5882496B2 JP2014547092A JP2014547092A JP5882496B2 JP 5882496 B2 JP5882496 B2 JP 5882496B2 JP 2014547092 A JP2014547092 A JP 2014547092A JP 2014547092 A JP2014547092 A JP 2014547092A JP 5882496 B2 JP5882496 B2 JP 5882496B2
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- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31565—Next to polyester [polyethylene terephthalate, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31573—Next to addition polymer of ethylenically unsaturated monomer
- Y10T428/31587—Hydrocarbon polymer [polyethylene, polybutadiene, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
- Y10T428/31797—Next to addition polymer from unsaturated monomers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
また、本発明の目的は、透明ガラス基板の表面硬度に相当近接する高い表面硬度を有し、高温及び高湿に強い物性を有する高強度透明プラスチックシートを製造する方法を提供することにある。
前記第1及び第2の耐熱樹脂層のそれぞれは、重量平均分子量が10万〜20万であるポリメチルメタクリレート(PMMA)を主成分とし、ガラス転移温度が120℃〜130℃であるアクリル系樹脂からなり、前記透明基材層は、ポリエチレンテレフタレート(polyethylene terephthalate:PET)またはポリエチレンテレフタレートグリコール(polyethylene terephthalate glycol:PETG)からなり、前記第1及び第2のハードコーティング層のそれぞれは、ウレタン系ポリマーで形成されていることを特徴とする。
図1を参照すると、図示した高強度透明プラスチックシート100は、透明基材層110、第1及び第2の接着層120、122、第1及び第2の耐熱樹脂層130、132及び第1及び第2のハードコーティング層140、142を含むことができる。
図2を参照すると、本発明の他の実施例に係る高強度透明プラスチックシート100は、一実施例に係る高強度透明プラスチックシート(図1の100)と実質的に同一の構成を有する。但し、本発明の他の実施例に係る高強度透明プラスチックシート100は、第1及び第2のハードコーティング層140、142上にそれぞれ合紙された第1及び第2の保護フィルム150、152をさらに含むことを特徴とする。
図3を参照すると、図示した高強度透明プラスチックシートの製造方法は、耐熱樹脂層の付着ステップ(S210)、ハードコーティング層の形成ステップ(S220)及び保護フィルムの合紙ステップ(S230)を含むことができる。
耐熱樹脂層の付着ステップ(S210)では、透明基材層の両面に第1及び第2の耐熱樹脂層をそれぞれ形成する。一方、本ステップでは、第1及び第2の耐熱樹脂層と共に、透明基材層の両面に第1及び第2の接着層を共押出することができる。または、上述したように、事前に第1及び第2の接着層を透明基材層の両面にコーティングした後、別途の工程で第1及び第2の耐熱樹脂層を第1及び第2の接着層の両面に押出コーティングすることもできる。
ハードコーティング層の形成ステップ(S220)では、第1及び第2の耐熱樹脂層の外側面に第1及び第2のハードコーティング層をそれぞれ形成する。
保護フィルムの合紙ステップ(S230)では、第1及び第2のハードコーティング層上に第1及び第2の保護フィルムを合紙する。
以下、本発明の好ましい実施例を通じて本発明の構成及び作用をより詳細に説明する。但し、これは、本発明の好ましい例示として提示されたものであって、如何なる意味でもこれによって本発明が制限されると解釈することはできない。
50μmの厚さを有するPET(Polyethylene Terephthalate)フィルムの両面に、グラビアコーティング工法で乾燥後に厚さ2μmのポリウレタン系接着剤を塗布し、別途の押出工程を通じてPET(polyethylene terephthalate)フィルムの両面にガラス転移温度が125℃であるアクリル系共重合体耐熱樹脂をT―ダイ法を用いて共押出コーティングした。この共押出されたシートの全体の厚さは1mmであった。
PETフィルムの代わりにPETGフィルムを用いたことを除いては、実施例1と同一の方法で透明プラスチックシート試片を製造した。
PETフィルムの代わりにPET60重量%及びシクロオレフィンポリマー(cyclo―olefin polymer)40重量%からなる複合フィルムを用いたことを除いては、実施例1と同一の方法で透明プラスチックシート試片を製造した。
PET80重量%及びポリエチレンナフタレート(polyethylene naphthalate:PEN)20重量%からなる複合フィルムを用いたことを除いては、実施例1と同一の方法で透明プラスチックシート試片を製造した。
ポリウレタン系接着剤の代わりにEVA(ethylene co―vinyl acetate)を用い、これを4μmの厚さに塗布したことを除いては、実施例1と同一の方法で透明プラスチックシート試片を製造した。
ハードコーティング層の形成のためにウレタン系ポリマーの代わりにシロキサン系ポリマーを用い、これを5μmの厚さにそれぞれ塗布したことを除いては、実施例1と同一の方法で透明プラスチックシート試片を製造した。
携帯用ディスプレイ装置の外窓に商用化されて使用されているコーニング社のGorilla glassを3cm(横)×3cm(縦)×1mm(厚さ)に切断して強化ガラス試片を製造した。
0.6mmの厚さを有するポリカーボネート(PC)フィルムと0.4mmの厚さを有するPMMAフィルムをT―ダイ法で共押出した後、3cm(横)×3cm(縦)×1mm(厚さ)に切断して透明プラスチックシート試片を製造した。
1mmの厚さを有するポリメチルメタクリレート(PMMA)樹脂をT―ダイ法を用いて断層に押出した後、3cm(横)×3cm(縦)×1mm(厚さ)に切断して透明プラスチックシート試片を製造した。
ガラス転移温度が100℃であるアクリル系共重合体耐熱樹脂を用いたことを除いては、実施例1と同一の方法で透明プラスチックシート試片を製造した。
表1は、実施例1〜6による各試片に対する物性評価結果を示したもので、表2は、比較例1〜4による各試片に対する物性評価結果を示したものである。
110・・・透明基材層
120・・・第1の接着層
122・・・第2の接着層
130・・・第1の耐熱樹脂層
132・・・第2の耐熱樹脂層
140・・・第1のハードコーティング層
142・・・第2のハードコーティング層
150・・・第1の保護フィルム
152・・・第2の保護フィルム
Claims (6)
- 透明基材層;
前記透明基材層の両面にそれぞれ形成された第1及び第2の接着層;
前記第1及び第2の接着層の外側面にそれぞれ形成された第1及び第2の耐熱樹脂層;及び
前記第1及び第2の耐熱樹脂層の外側面にそれぞれ形成された第1及び第2のハードコーティング層;を含み、
前記第1及び第2の接着層のそれぞれは、0.5μm〜5μmの厚さを有し、
前記第1及び第2の耐熱樹脂層のそれぞれは、重量平均分子量が10万〜20万であるポリメチルメタクリレート(PMMA)を主成分とし、ガラス転移温度が120℃〜130℃であるアクリル系樹脂からなり、
前記透明基材層は、ポリエチレンテレフタレート(polyethylene terephthalate:PET)またはポリエチレンテレフタレートグリコール(polyethylene terephthalate glycol:PETG)からなり、
前記第1及び第2のハードコーティング層のそれぞれは、ウレタン系ポリマーで形成されていることを特徴とする高強度透明プラスチックシート。 - 前記第1及び第2の接着層のそれぞれは、
ポリエステル、ポリウレタン、アクリル、EVA(ethylene co―vinyl acetate)及びPVAc(polyvinylacetate)から選ばれたいずれか一つの接着剤を用いて形成されることを特徴とする、請求項1に記載の高強度透明プラスチックシート。 - 前記第1及び第2のハードコーティング層のそれぞれは、
2μm〜7μmの厚さを有することを特徴とする、請求項1に記載の高強度透明プラスチックシート。 - (a)透明基材層の両面に第1及び第2の接着層と第1及び第2の耐熱樹脂層をそれぞれ順次付着するステップ;及び
(b)前記第1及び第2の耐熱樹脂層の外側面に第1及び第2のハードコーティング層をそれぞれ形成するステップ;を含み、
前記第1及び第2の接着層のそれぞれは、0.5μm〜5μmの厚さを有し、
前記第1及び第2の耐熱樹脂層のそれぞれは、重量平均分子量が10万〜20万であるポリメチルメタクリレート(PMMA)を主成分とし、ガラス転移温度が120℃〜130℃であるアクリル系樹脂からなり、
前記透明基材層は、ポリエチレンテレフタレート(polyethylene terephthalate:PET)またはポリエチレンテレフタレートグリコール(polyethylene terephthalate glycol:PETG)からなり、
前記第1及び第2のハードコーティング層のそれぞれは、ウレタン系ポリマーで形成されることを特徴とする高強度透明プラスチックシートの製造方法。 - 前記(a)ステップでは、
前記透明基材層の両面に前記第1及び第2の接着層を事前に形成した後、前記第1及び第2の耐熱樹脂層を両面に押出コーティングしたり、または、前記第1及び第2の接着層と前記第1及び第2の耐熱樹脂層を透明基材層の両面に共押出コーティングすることを特徴とする、請求項4に記載の高強度透明プラスチックシートの製造方法。 - 前記(b)ステップの後では、
(c)前記第1及び第2のハードコーティング層上に第1及び第2の保護フィルムを合紙するステップをさらに含むことを特徴とする、請求項4に記載の高強度透明プラスチックシートの製造方法。
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KR10-2011-0136179 | 2011-12-16 | ||
KR1020110136179A KR101394847B1 (ko) | 2011-12-16 | 2011-12-16 | 유리기판 대용으로 사용할 수 있는 고강도 투명 플라스틱 시트 및 그 제조 방법 |
PCT/KR2012/010531 WO2013089389A1 (ko) | 2011-12-16 | 2012-12-06 | 유리기판 대용으로 사용할 수 있는 고강도 투명 플라스틱 시트 및 그 제조 방법 |
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JP6672679B2 (ja) * | 2015-09-30 | 2020-03-25 | 大日本印刷株式会社 | 筐体用積層板及び筐体 |
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JP2004259256A (ja) * | 2003-02-05 | 2004-09-16 | Nitto Denko Corp | 透明積層体、ペン入力画像表示装置および画像表示方法 |
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US11003138B2 (en) | 2016-06-15 | 2021-05-11 | Samsung Display Co., Ltd. | Display device |
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CN103987520B (zh) | 2016-06-01 |
CN103987520A (zh) | 2014-08-13 |
KR20130068800A (ko) | 2013-06-26 |
KR101394847B1 (ko) | 2014-05-14 |
US20140335337A1 (en) | 2014-11-13 |
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