JP2022017877A - レーザー記録用樹脂組成物、レーザー記録用インキ組成物、成形物、積層体、及び印刷体 - Google Patents
レーザー記録用樹脂組成物、レーザー記録用インキ組成物、成形物、積層体、及び印刷体 Download PDFInfo
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- JP2022017877A JP2022017877A JP2020120700A JP2020120700A JP2022017877A JP 2022017877 A JP2022017877 A JP 2022017877A JP 2020120700 A JP2020120700 A JP 2020120700A JP 2020120700 A JP2020120700 A JP 2020120700A JP 2022017877 A JP2022017877 A JP 2022017877A
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Abstract
Description
得られた成形物にレーザー光を照射することで黒色印字を行う工程、
を含む印刷体の製造方法についても提供する。
上記レーザー印字層にレーザー光を照射することで黒色印字を行う工程、
を含む印刷体の製造方法についても提供する。
本発明のレーザー記録用樹脂組成物は、耐衝撃性ポリスチレン樹脂及びモリブデン酸アンモニウムを含有することを特徴とする。
耐衝撃性ポリスチレン樹脂は、芳香族ビニル重合体のマトリックス中にゴム状重合体が粒子状に分散された樹脂である。耐衝撃性ポリスチレン樹脂は、例えば、芳香族ビニル単量体と不活性溶媒の混合液にゴム状重合体を溶解し、攪拌して塊状重合、懸濁重合、又は溶液重合等を行うことにより得ることができる。また、芳香族ビニル単量体と不活性溶媒の混合液にゴム状重合体を溶解して得られた樹脂に、芳香族ビニル重合体を混合した混合物であってもよい。
上記モリブデン酸アンモニウムは、遷移金属であるモリブデンに酸素が結合したモリブデン酸がアンモニウム塩となったものである。モリブデン酸アンモニウムは粉末状(粒子状)であることが好ましい。
本発明の成形物は、レーザー記録用樹脂組成物からなることを特徴とする。成形物は傾斜面を有していてもよく、また凹形状の内側に傾斜する傾斜面を有していてもよい(図1及び2参照)。成形物が傾斜面を有している場合、パット印刷では印字の際に欠けや「にじみ」等の問題が生じることがあるが、本発明の成形物はレーザー光を照射することによりその表面に「にじみ」が少なく、且つはっきりとした黒色印字を得ることができる。
本発明のレーザー記録用インキ組成物は、耐衝撃性ポリスチレン樹脂からなる基材への塗布に用いられるものであって、モリブデン酸アンモニウムを含有することを特徴とする。上記レーザー記録用インキ組成物は、モリブデン酸アンモニウム以外の成分として、さらに熱可塑性樹脂及び/又は熱硬化性化合物と溶媒とを含有することが好ましい。上記レーザー記録用インキ組成物は、モリブデン酸アンモニウム、熱可塑性樹脂、熱硬化性化合物、及び溶媒以外にも、各種の添加剤を含んでいてもよい。
モリブデン酸アンモニウムは上記レーザー記録用樹脂組成物の項において説明したものと同様のものを使用することができる。モリブデン酸アンモニウムの含有量は特に限定されないが、レーザー記録用インキ組成物全量に対して、例えば、0.1~15質量%であることが好ましく、0.2~10質量%であることがより好ましい。モリブデン酸アンモニウムの含有量が上記範囲内にあることにより、発色が十分である傾向がある。
上記レーザー記録用インキ組成物を塗布する基材は、耐衝撃性ポリスチレン樹脂からなる基材であり、耐衝撃性ポリスチレン樹脂を含む樹脂組成物を成形することにより得ることができる。耐衝撃性ポリスチレン樹脂としては、上記レーザー記録用樹脂組成物の項において説明したものと同様のものを使用することができる。
本発明の積層体は、耐衝撃性ポリスチレン樹脂からなる基材と、基材上に位置するレーザー印字層とを含み、レーザー印字層が上記レーザー記録用インキ組成物の固化物であることを特徴とする。上記レーザー印字層は、必ずしも全面に設ける必要はなく、印字したい部分だけに設けてもよい。したがって、後述の傾斜面のみに設けてもよい。
本発明の成形物及び積層体はレーザー光を照射することで黒色印字を行うことにより、印刷体とすることができる。すなわち、本発明の印刷体は、傾斜面を有してもよい成形物であって、その表面に黒色印字がなされたものである。また、本発明の印刷体は、傾斜面を有してもよい積層体のレーザー印字層に黒色印字がなされたものであってもよい。その中でも、本発明の印刷体は、傾斜面を有する成形物であって、その傾斜面に黒色印字がなされたものであることが好ましい。また、本発明の印刷体は、傾斜面を有する積層体の、前記傾斜面に設けられたレーザー印字層に黒色印字がなされたものであってもよい。
出力:15W
照射時間:1.7sec/1word
2、傾斜面
Claims (12)
- 耐衝撃性ポリスチレン樹脂及びモリブデン酸アンモニウムを含有することを特徴とするレーザー記録用樹脂組成物。
- 請求項1に記載のレーザー記録用樹脂組成物の成形物。
- 傾斜面を有する請求項2に記載の成形物。
- 請求項2又は3に記載の成形物に黒色印字がなされた印刷体。
- 請求項1に記載のレーザー記録用樹脂組成物を成形して成形物を作製する工程、及び
得られた成形物にレーザー光を照射することで黒色印字を行う工程、
を含む印刷体の製造方法。 - 前記成形物が傾斜面を有し、前記傾斜面にレーザー光を照射することで黒色印字を行う請求項5に記載の印刷体の製造方法。
- 耐衝撃性ポリスチレン樹脂からなる基材への塗布に用いられる、モリブデン酸アンモニウムを含有することを特徴とするレーザー記録用インキ組成物。
- 耐衝撃性ポリスチレン樹脂からなる基材と、前記基材上に位置するレーザー印字層とを含む積層体であって、前記レーザー印字層が請求項7に記載のレーザー記録用インキ組成物の固化物であることを特徴とする積層体。
- 積層体が傾斜面を有し、前記傾斜面にレーザー印字層を備えることを特徴とする請求項8に記載の積層体。
- 請求項8又は9に記載の積層体のレーザー印字層に黒色印字がなされた印刷体。
- 耐衝撃性ポリスチレン樹脂からなる基材の表面に、請求項7に記載のレーザー記録用インキ組成物を塗布した後に固化することにより、レーザー印字層を形成する工程、及び
前記レーザー印字層にレーザー光を照射することで黒色印字を行う工程、
を含む印刷体の製造方法。 - 請求項4又は10に記載の印刷体を含む、生物学的検体の検査キット。
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JP2005162913A (ja) * | 2003-12-03 | 2005-06-23 | Polyplastics Co | レーザーマーキング用樹脂組成物 |
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JP2019010822A (ja) * | 2017-06-30 | 2019-01-24 | サトーホールディングス株式会社 | 包装体の製造方法およびインキ組成物 |
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