JP6987155B2 - 加飾成形用シート、プリフォーム成形体、及び加飾成形体 - Google Patents
加飾成形用シート、プリフォーム成形体、及び加飾成形体 Download PDFInfo
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- JP6987155B2 JP6987155B2 JP2019564603A JP2019564603A JP6987155B2 JP 6987155 B2 JP6987155 B2 JP 6987155B2 JP 2019564603 A JP2019564603 A JP 2019564603A JP 2019564603 A JP2019564603 A JP 2019564603A JP 6987155 B2 JP6987155 B2 JP 6987155B2
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- molded body
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- decorative molding
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Description
これらの中では、ナイロンがしなやかな風合いになる点から特に好ましい。
6ナイロン(Ny)50質量部(島成分)と高流動性低密度ポリエチレン(海成分)50質量部をチップブレンドし、混合溶融紡糸することにより海島型複合繊維を製造した。そして、海島型複合繊維を70℃の熱水中で2.5倍に延伸し、延伸された海島型複合繊維に繊維油剤を付与し、機械捲縮をかけ、さらに乾燥した後、51mmにカットして4dtexのステープル繊維を得た。このステープル繊維を用いて目付600g/m2のウェッブを形成し、ついで両面から交互に合わせて約500パンチ/cm2のニードルパンチングを行い、さらに120℃に加熱し、カレンダーロールでプレスすることで表面の平滑な絡合不織布を作成した。この絡合不織布に、ポリテトラメチレンエーテル系ポリウレタンジメチルホルムアミド溶液(濃度13%)を含浸し、DMF/水=15/85の混合液の中に浸してポリウレタンを多孔質状に湿式凝固した後、熱トルエン中で海島型複合繊維中の海成分を溶出除去することにより、繊度0.004dtexの極細繊維を発生させた。このようにして、厚さ1.4mmの人工皮革基体を得た。
得られたプリフォーム成形体の高さ保持率を算出し、また、外観を目視し、以下の基準で判定した。
A:高さ保持率が95%以上であり、角の賦形も良好であった。
B:高さ保持率が90〜95%であり、角の賦形も良好であった。
C:高さ保持率が80〜90%であり、角の賦形がやや不明確であった。
D:高さ保持率が50〜80%であり、角の賦形が不明確であった。
E:高さ保持率が0〜50%であり、角の賦形の痕が残っただけであった。
加飾成形体のプリフォーム成形体と樹脂成形体との位置ずれを目視により観察し、以下の基準で判定した。
A:樹脂成形体の目的とする領域に対してプリフォーム成形体が0.2mm以内のずれで正確に配されていた。
B:樹脂成形体の目的とする領域に対してプリフォーム成形体が0.2〜0.5mmで位置ずれして配されていた。
C:樹脂成形体の目的とする領域に対してプリフォーム成形体が0.5mm超の位置ずれして配されていた。
加飾成形体のプリフォーム成形体表面の樹脂成形体のウェルドラインが形成される付近を目視し、以下の基準で判定した。
A:プリフォーム成形体の表面が平滑であり、ウェルドライン痕は全くなかった。
B:プリフォーム成形体の表面が平滑であったが、ウェルドライン痕が1cm以下であることが確認された。
C:プリフォーム成形体の表面が平滑でなく、ウェルドライン痕が1cm以上であることが確認された。
加飾成形体における樹脂成形体に対するプリフォーム成形体の接着強力を引張試験機(テンシロン オリエンテック(株))を用いて次のように評価した。具体的には、幅25mm×長さ100mmに加飾成形体を切り出した試験片を作成した。そして、試験片の加飾成形体の樹脂成形体とプリフォーム成形体とを端部から長さ40mm程度を層間剥離のようにして剥離した。そして、それぞれの端部を、初期間隔50mmに設定した引張試験機の上下それぞれのチャックに挟んで、引張速度100mm/分で引張試験を行って引張時間−剥離強力の曲線を得た。そして、得られた曲線から最大値と最小値の各5点を抽出して平均値を接着強力とした。3本のサンプルの平均値を求め、次のようにしてクラス分けした。
B:3〜4Kg/cm
C:2〜3Kg/cm
D:1〜2Kg/cm
E:0〜1Kg/cm
塩化ビニル‐酢酸ビニル共重合体の樹脂層における、塩化ビニル‐酢酸ビニル共重合体の共重合比、または樹脂目付を表1に示したように変更した以外は実施例1と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表1に示す。
実施例1で得られた人工皮革基体を半裁し、スライス面をバフィングし厚み調整したのち、反スライス面をバフィングして起毛した面に乾式造面法によりポリウレタンの銀面調の樹脂層を接着することにより積層して銀付調人工皮革を得た。実施例1において、スエード調人工皮革の代わりに銀付調人工皮革を用いた以外は実施例1と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表1に示す。
ナイロン6・12(Ny6・12)60質量部(島成分)と高流動性低密度ポリエチレン(海成分)40質量部からなる海島型複合繊維を溶融紡糸法により調製した。そして、海島型複合繊維を70℃の熱水中で2.5倍に延伸し、延伸された海島型複合繊維に繊維油剤を付与し、機械捲縮をかけ、さらに乾燥した後、51mmにカットすることにより4dtexのステープル繊維を得た。このステープル繊維を用いて目付600g/m2のウェッブを形成し、ついで両面から交互に合わせて約1500パンチ/cm2のニードルパンチングを行い、面積収縮率を20%にし、さらに120℃に加熱し、カレンダーロールでプレスすることにより表面の平滑な絡合不織布を作成した。この絡合不織布に、ポリテトラメチレンエーテル系ポリウレタンジメチルホルムアミド溶液(濃度13%)を含浸し、熱トルエン中で海島型複合複合繊維中の海成分を溶出除去して繊度0.004dtexの極細繊維を発生させた。このようにして、厚さ1.4mmの人工皮革基体を得た。実施例1において、上記人工皮革基体を用いた以外は実施例1と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表1に示す。
塩化ビニル‐酢酸ビニル共重合体の樹脂層における、塩化ビニル‐酢酸ビニル共重合体の共重合比、または樹脂目付を表1に示したように変更した以外は実施例1と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表1に示す。
塩化ビニル‐酢酸ビニル共重合体の樹脂層を形成しなかった以外は実施例1と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表1に示す。
塩化ビニル‐酢酸ビニル共重合体の樹脂層の代わりに、酢酸ビニル単独重合体の樹脂層を形成した以外は実施例1と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表1に示す。
塩化ビニル‐酢酸ビニル共重合体の樹脂層を形成しなかった以外は実施例5と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表1に示す。
塩化ビニル‐酢酸ビニル共重合体の樹脂層の代わりに、塩化ビニル単独重合体の樹脂層を形成した以外は実施例5と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表1に示す。
実施例6の人工皮革基体の製造において、ポリウレタンを含浸付与する工程を省略した以外は実施例1と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表1に示す。
海成分の熱可塑性樹脂としてエチレン変性ポリビニルアルコール、島成分の熱可塑性樹脂として変性PET(イソフタル酸単位の含有割合6.0モル%のイソフタル酸変性ポリエチレンテレフタレート)を含む、海島型複合繊維の絡合不織布を製造した。そして、海島型複合繊維の絡合不織布にポリカーボネート/エーテル系ポリウレタンのエマルジョンを含浸させた後、加熱乾燥することによりポリウレタンが含浸付与された海島型複合繊維の絡合不織布を得た。
実施例11で得られた人工皮革基体を半裁し、スライス面をバフィングして厚み調整したのち、反スライス面をバフィングしてスエード調に起毛した面に乾式造面法によりポリウレタンの銀面調の樹脂層を接着して積層することにより銀付調人工皮革を得た。実施例11において、スエード調人工皮革の代わりに銀付調人工皮革を用いた以外は実施例11と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表2に示す。
塩化ビニル‐酢酸ビニル共重合体の樹脂層における、塩化ビニル‐酢酸ビニル共重合体の共重合比、または樹脂目付を表2に示したように変更した以外は実施例11と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表2に示す。
実施例11の人工皮革基体の製造において、ポリウレタンを含浸付与する工程を省略し、また、厚さを変更した以外は実施例11と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表2に示す。
実施例11の人工皮革基体の製造において、ポリウレタンを含浸付与する工程を省略し、また、厚さを変更し、さらに、塩化ビニル‐酢酸ビニル共重合体の樹脂層を形成しなかった以外は実施例11と同様にして加飾成形用シート及び加飾成形体を製造し、評価した。結果を表2に示す。
2 高分子弾性体
3 人工皮革基体
6 プリフォーム成形体
7 不要部
8 樹脂成形体
10 加飾成形用シート
20 加飾成形体
Claims (11)
- 三次元形状にプリフォーム成形される加飾成形用シートであって、
平均繊度0.001〜1dtexの極細繊維を含む不織布と前記不織布に付与された高分子弾性体とを含み、皮革様仕上面を有する人工皮革基体と、前記人工皮革基体の前記皮革様仕上面に対する裏面に形成された塩化ビニル‐酢酸ビニル共重合体を含む樹脂層と、を備える加飾成形用シート。 - 前記塩化ビニル‐酢酸ビニル共重合体中の酢酸ビニル単位の含有率が5〜25モル%である請求項1に記載の加飾成形用シート。
- 前記塩化ビニル‐酢酸ビニル共重合体のガラス転移温度が65〜85℃である請求項1または2に記載の加飾成形用シート。
- 前記樹脂層の目付が50〜100g/m2である請求項1〜3のいずれか1項に記載の加飾成形用シート。
- 前記人工皮革基体は前記高分子弾性体を10〜40質量%含む請求項1〜4のいずれか1項に記載の加飾成形用シート。
- 前記高分子弾性体はポリウレタンである請求項1〜5のいずれか1項に記載の加飾成形用シート。
- 前記皮革様仕上面は、前記極細繊維を起毛させた起毛面である請求項1〜6のいずれか1項に記載の加飾成形用シート。
- 前記皮革様仕上面は、前記人工皮革基体の表面に積層された樹脂層である請求項1〜6のいずれか1項に記載の加飾成形用シート。
- 前記極細繊維が、ナイロンの極細繊維を含む請求項1〜8のいずれか1項に記載の加飾成形用シート。
- 請求項1〜9のいずれか1項に記載の加飾成形用シートを三次元形状に賦形したプリフォーム成形体。
- 樹脂成形体と、前記樹脂成形体の表面に配された表皮層とを備え、
前記表皮層が請求項1〜9のいずれか1項に記載の加飾成形用シートである加飾成形体。
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US4216251A (en) | 1977-09-05 | 1980-08-05 | Kuraray Co., Ltd. | Method of producing a leather-like sheet material having a high-quality feeling |
CA1198857A (en) * | 1982-05-10 | 1986-01-07 | Ronald S. Lenox | Decorative sheets and coverings comprising polyvinyl chloride and cationic dyestuffs |
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2018
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US11370202B2 (en) | 2022-06-28 |
US20210094268A1 (en) | 2021-04-01 |
EP3739111A1 (en) | 2020-11-18 |
TWI786254B (zh) | 2022-12-11 |
CN111542660A (zh) | 2020-08-14 |
EP3739111A4 (en) | 2021-11-17 |
KR20200093652A (ko) | 2020-08-05 |
CN111542660B (zh) | 2023-02-17 |
JPWO2019138816A1 (ja) | 2020-12-17 |
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WO2019138816A1 (ja) | 2019-07-18 |
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