JP2009092720A - Label for laser marking - Google Patents

Label for laser marking Download PDF

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JP2009092720A
JP2009092720A JP2007260463A JP2007260463A JP2009092720A JP 2009092720 A JP2009092720 A JP 2009092720A JP 2007260463 A JP2007260463 A JP 2007260463A JP 2007260463 A JP2007260463 A JP 2007260463A JP 2009092720 A JP2009092720 A JP 2009092720A
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label
laser marking
layer
ink layer
thickness
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Takashi Goushu
貴司 郷州
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Tokin Corp
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NEC Tokin Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a label for laser marking for marking on a surface of the label by laser beams and reducing the whole thickness of the label while protecting a printed face on the surface of the label. <P>SOLUTION: A first ink layer 2 and an adhesive layer 3 are laminated on one face of a transparent basic material 1, and a second ink layer 4 and a coating layer 5 are laminated on the other face of the basic material 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、レーザマーキング用ラベルに関し、特に表面にレーザマーキングを行うラベル巻き仕様の電池パックのレーザマーキング用ラベルに関する。   The present invention relates to a label for laser marking, and more particularly to a label for laser marking of a battery pack of a label winding specification that performs laser marking on a surface.

従来のラベル巻き仕様の電池パックのレーザマーキング用ラベルにおいては、ラベルの基材上へインクにより印刷を行った後、表面に印刷保護の為にニスの塗布を行っていた（例えば特許文献１参照）。   In a conventional label for laser marking of a battery pack with a label winding specification, after printing with ink on a label base material, a varnish is applied to the surface for printing protection (see, for example, Patent Document 1). ).

図２、図３、図４は、それぞれ従来のレーザマーキング用ラベルを模式的に示す斜視図である。従来のラベル巻き仕様の電池パックのレーザマーキング用ラベルは、図２に示すように、例えば、白色の厚さ２５μｍ〜３８μｍのＰＥＴ（ポリエチレンテレフタレート）からなる基材１１の表面に厚さ３μｍのインク層４が形成され、インク層４上に印刷の保護の為にニスからなる厚さ３μｍのコーティング層５が形成され、基材１１の裏面には電池パックに接着させるため厚さ２０μｍの粘着剤からなる粘着層３が形成されている。このレーザマーキング用ラベルにおいては、ラベル表面の印刷の保護がニス等による薄いコーティング層のみからなるため、ラベル表面の印刷内容が擦れ等により剥がれる場合があり耐磨耗性が劣るという問題があった。   2, FIG. 3, and FIG. 4 are perspective views schematically showing conventional laser marking labels, respectively. As shown in FIG. 2, the label for laser marking of the battery pack of the conventional label winding specification is, for example, a 3 μm thick ink on the surface of a substrate 11 made of white PET (polyethylene terephthalate) having a thickness of 25 μm to 38 μm. A layer 4 is formed, and a coating layer 5 of 3 μm thick made of varnish is formed on the ink layer 4 to protect printing, and an adhesive having a thickness of 20 μm is adhered to the back surface of the substrate 11 to the battery pack. An adhesive layer 3 made of is formed. In this laser marking label, since the printing on the label surface consists only of a thin coating layer such as varnish, the printed content on the label surface may be peeled off due to rubbing or the like, resulting in poor wear resistance. .

これを防止するため図３に示すように、例えば、白色の厚さ２５μｍ〜３８μｍのＰＥＴからなる基材１１の表面に厚さ３μｍのインク層４が形成され、インク層４上に印刷の保護の為に厚さ２０μｍの粘着剤８を有する透明な厚さ１６μｍのＰＥＴからなる保護層９が貼り付けられ基材１１の裏面には電池パックに接着させるため厚さ２０μｍの粘着剤からなる粘着層３が形成されたレーザマーキング用ラベルもある。このレーザマーキング用ラベルにおいては、ラベル表面の印刷内容の保護は可能となるが、保護層９側からレーザ照射を行うとレーザ光は保護層９を透過し、インク層４に照射され、レーザ照射部６においてレーザ照射による熱およびインクの残渣が基材１１と保護層９との間に蓄積し、レーザマーキング７の外観を著しく損なうこととなり、またラベルの厚さも約８４μｍ〜９７μｍと厚くなる。   In order to prevent this, as shown in FIG. 3, for example, an ink layer 4 having a thickness of 3 μm is formed on the surface of a base material 11 made of white PET having a thickness of 25 μm to 38 μm, and printing protection is performed on the ink layer 4. For this purpose, a protective layer 9 made of transparent PET having a thickness of 16 μm and having a pressure-sensitive adhesive 8 having a thickness of 20 μm is attached, and an adhesive made of a pressure-sensitive adhesive having a thickness of 20 μm is attached to the back surface of the substrate 11 to be adhered to the battery pack. There is also a laser marking label in which the layer 3 is formed. In this laser marking label, the printed content on the label surface can be protected. However, when laser irradiation is performed from the protective layer 9 side, the laser light is transmitted through the protective layer 9 and irradiated to the ink layer 4, and laser irradiation is performed. In the portion 6, heat and ink residues due to laser irradiation accumulate between the base material 11 and the protective layer 9, and the appearance of the laser marking 7 is remarkably impaired, and the thickness of the label is increased to about 84 μm to 97 μm.

さらに図４に示すように、例えば白色の厚さ２５μｍ〜３８μｍのＰＥＴからなる基材１１の表面に厚さ３μｍのインク層４が形成され、インク層４上に印刷の保護の為にニスからなる厚さ３μｍのコーティング層５が形成され、レーザマーキング（レーザ照射による印字）を行う範囲を除いて厚さ２０μｍの粘着剤８を有する透明なＰＥＴからなる保護層９が貼り付けられ基材１１の裏面には電池パックに接着させるため厚さ２０μｍの粘着剤からなる粘着層３が形成されたレーザマーキング用ラベルもある。このレーザマーキング用ラベルにおいては、ラベル表面の印刷内容の保護は可能であり、レーザ照射によるレーザマーキング７の外観は良好であるが、ラベル表面に保護層９の段差が生じるため、保護層が剥がれやすくなり、ラベルへの保護層の貼り付け位置等に制約があるためラベルの印刷デザインに制約が生じる。さらに保護層を貼り付けることによりラベルの総厚も約８７μｍ〜１００μｍと厚くなる。その結果電池パックも厚くなってしまう。   Further, as shown in FIG. 4, an ink layer 4 having a thickness of 3 μm is formed on the surface of a substrate 11 made of, for example, white PET having a thickness of 25 μm to 38 μm. A coating layer 5 having a thickness of 3 μm is formed, and a protective layer 9 made of transparent PET having a pressure-sensitive adhesive 8 having a thickness of 20 μm is attached except for a range where laser marking (printing by laser irradiation) is performed. There is also a laser marking label in which an adhesive layer 3 made of an adhesive having a thickness of 20 μm is formed on the back surface of the adhesive to be adhered to the battery pack. In this laser marking label, the printed contents on the label surface can be protected, and the appearance of the laser marking 7 by laser irradiation is good. However, since the step of the protective layer 9 occurs on the label surface, the protective layer is peeled off. It becomes easier, and there is a restriction on the printing design of the label because there are restrictions on the position where the protective layer is attached to the label. Further, by attaching a protective layer, the total thickness of the label is increased to about 87 μm to 100 μm. As a result, the battery pack also becomes thick.

特開平１１−７０７３４号公報JP-A-11-70734

従来のラベル巻き仕様の電池パックのレーザマーキング用ラベルにおいては、ラベル基材上への印刷後、ニスあるいはＰＥＴ等による印刷面の保護を行っていたが、印刷面の保護ならびにラベル表面へ良質のレーザマーキングを行うことが困難であった。   In the label for laser marking of the battery pack of the conventional label winding specification, the printing surface was protected by varnish or PET after printing on the label base material. It was difficult to perform laser marking.

本発明の課題は、ラベル表面の印刷面の保護をしつつラベル表面へのレーザマーキングを行うことができ、かつラベルの総厚を薄くすることができるレーザマーキング用ラベルを提供することにある。   The subject of this invention is providing the label for laser marking which can perform the laser marking to a label surface, protecting the printing surface of a label surface, and can make the total thickness of a label thin.

本発明によれば、透明な基材の一方の面に第一のインク層と粘着層が積層され、他方の面に第二のインク層とコーティング層を有することを特徴とするレーザマーキング用ラベルが得られ、また、透明な基材の一方の面に第一のインク層と粘着層が積層され、他方の面のレーザマーキングを行う範囲に第二のインク層とコーティング層を有することを特徴とするレーザマーキング用ラベルが得られる。   According to the present invention, the laser marking label is characterized in that the first ink layer and the adhesive layer are laminated on one surface of the transparent substrate, and the second ink layer and the coating layer are disposed on the other surface. In addition, the first ink layer and the adhesive layer are laminated on one side of a transparent substrate, and the second ink layer and the coating layer are provided in a range where laser marking is performed on the other side. A laser marking label is obtained.

本発明のレーザマーキング用ラベルによれば、透明な基材の一方の面、即ち電池パックのレーザマーキング用ラベルの裏面にインク層からなる印刷を行い、基材の他方の面、即ちラベルの表面に、更にレーザマーキングのためのインク層による印刷及びコーティング層を有することにより、ラベルの印刷面の保護をしつつ、良質のレーザマーキングが可能となり、かつ、ラベルの総厚を薄くすることができる。そのためラベル巻き仕様の電池パックの厚みを薄くすることができる。   According to the laser marking label of the present invention, an ink layer is printed on one surface of a transparent substrate, that is, the back surface of the laser marking label of the battery pack, and the other surface of the substrate, that is, the surface of the label. Furthermore, by providing a printing and coating layer with an ink layer for laser marking, high-quality laser marking can be performed while protecting the printing surface of the label, and the total thickness of the label can be reduced. . Therefore, the thickness of the label-wrap battery pack can be reduced.

次に、本発明の実施の形態について図面を参照して説明する。図１は本発明のレーザマーキング用ラベルの模式的斜視図である。   Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of a laser marking label of the present invention.

図１に示すように、本発明のレーザマーキング用ラベルは、透明な基材１の一方の面に第一のインク層２と粘着層３が積層され、他方の面には第二のインク層４とコーティング層５を有している。ラベルの基材１には透明のプラスチックフィルム例えば厚さ２５μｍ〜３８μｍのＰＥＴを使用できる。基材１の一方の面、即ち電池パックに貼り付ける側でラベルとしては裏面となる面に厚さ３μｍの第一のインク層２による印刷が形成される。さらに第一のインク層２上には電池パックに接着させるための厚さ２０μｍの粘着層３が形成される。透明な基材１の他方の面、即ちラベルとしては表面となる面の好ましくはレーザマーキングを行なう範囲のみに厚さ３μｍの第二のインク層４による印刷を施し、さらに第二のインク層４を保護するためにニスなどからなる厚さ３μｍのコーティング層５を塗布する。   As shown in FIG. 1, the laser marking label of the present invention has a first ink layer 2 and an adhesive layer 3 laminated on one side of a transparent substrate 1, and a second ink layer on the other side. 4 and a coating layer 5. A transparent plastic film, for example, PET having a thickness of 25 μm to 38 μm can be used for the label substrate 1. Printing by the first ink layer 2 having a thickness of 3 μm is formed on one surface of the substrate 1, that is, on the surface to be attached to the battery pack as a label. Further, an adhesive layer 3 having a thickness of 20 μm is formed on the first ink layer 2 so as to adhere to the battery pack. Printing on the other surface of the transparent substrate 1, that is, the surface to be used as the label, is preferably performed only on the area where laser marking is performed, with the second ink layer 4 having a thickness of 3 μm. In order to protect the film, a coating layer 5 made of varnish or the like and having a thickness of 3 μm is applied.

本発明においては、レーザマーキング用ラベルを上述の様な構成とすることにより、ラベルの第一のインク層２による印刷面は透明な基材１によって保護される。また表面にはレーザマーキングのための第二のインク層４による印刷面およびコーティング層５を有し、ラベルの総厚も約５４μｍ〜６７μｍと薄くすることができる。第二のインク層４による印刷面においてはレーザ照射によりレーザ照射部６では熱により第二のインク層が溶解、ガス化、炭化等により変色、消失、剥離等によりレーザマーキング７が施されるため擦れ等による耐磨耗性に対しては強固なものとなっている。また、第二のインク層４とコーティング層５は両方合わせても粘着剤やＰＥＴ等による保護層よりも薄く、レーザマーキングを行なう範囲のみに形成する場合でも段差が小さく剥がれ難い。また、第二のインク層およびコーティング層は必ずしもレーザマーキングを行う範囲のみに形成する必要はなく、全面に第二のインク層による印字およびコーティング層があってもよい。   In the present invention, the laser marking label is configured as described above, so that the printed surface of the label by the first ink layer 2 is protected by the transparent substrate 1. Further, the surface has a printing surface by the second ink layer 4 for laser marking and the coating layer 5, and the total thickness of the label can be reduced to about 54 μm to 67 μm. On the printing surface of the second ink layer 4, the laser marking 7 is applied by laser irradiation due to laser irradiation and the second ink layer being dissolved, gasified, carbonized, etc. due to heat, discoloration, disappearance, peeling, etc. It is strong against wear resistance due to rubbing or the like. Further, even if both the second ink layer 4 and the coating layer 5 are combined, the second ink layer 4 and the coating layer 5 are thinner than the protective layer made of an adhesive, PET, or the like. Further, the second ink layer and the coating layer are not necessarily formed only in the range where laser marking is performed, and the printing and coating layer by the second ink layer may be provided on the entire surface.

本発明のレーザマーキング用ラベルを模式的に示す斜視図。The perspective view which shows the label for laser marking of this invention typically. 従来のレーザマーキング用ラベルを模式的に示す斜視図。The perspective view which shows the conventional label for laser marking typically. 従来のレーザマーキング用ラベルを模式的に示す斜視図。The perspective view which shows the conventional label for laser marking typically. 従来のレーザマーキング用ラベルを模式的に示す斜視図。The perspective view which shows the conventional label for laser marking typically.

符号の説明Explanation of symbols

１、１１ 基材
２、４ インク層
３ 粘着層
５ コーティング層
６ レーザ照射部
７ レーザマーキング
８ 粘着剤
９ 保護層 1, 11 Base material 2, 4 Ink layer 3 Adhesive layer 5 Coating layer
6 Laser irradiation part 7 Laser marking 8 Adhesive 9 Protective layer

Claims (2)

透明な基材の一方の面に第一のインク層と粘着層が積層され、他方の面に第二のインク層とコーティング層を有することを特徴とするレーザマーキング用ラベル。   A label for laser marking, wherein a first ink layer and an adhesive layer are laminated on one side of a transparent substrate, and a second ink layer and a coating layer are provided on the other side. 透明な基材の一方の面に第一のインク層と粘着層が積層され、他方の面のレーザマーキングを行なう範囲に第二のインク層とコーティング層を有することを特徴とするレーザマーキング用ラベル。   A label for laser marking, wherein a first ink layer and an adhesive layer are laminated on one side of a transparent substrate, and a second ink layer and a coating layer are provided in a range where laser marking is performed on the other side. .
JP2007260463A 2007-10-04 2007-10-04 Label for laser marking Pending JP2009092720A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009286864A (en) * 2008-05-28 2009-12-10 Dic Corp Adhesive film for laminate and laser-marking label
WO2013087344A1 (en) 2011-12-14 2013-06-20 Robert Bosch Gmbh Method for producing an inscribed battery cell housing
JP2013223831A (en) * 2012-04-20 2013-10-31 Toyota Motor Corp Laser decorating method
CN108511325A (en) * 2018-04-19 2018-09-07 蚌埠华特科技有限公司 A kind of preparation process of fingerprint module chip Surface L OGO

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JPS6042663U (en) * 1983-09-01 1985-03-26 野崎印刷紙業株式会社 thermal bill
JPH11327445A (en) * 1998-03-18 1999-11-26 Oji Paper Co Ltd Thermosensitive recording label
JP2000177201A (en) * 1998-12-14 2000-06-27 Toshiba Tec Corp Amount variable stamp issuing apparatus
JP2002347344A (en) * 2001-05-25 2002-12-04 Nippon Paper Industries Co Ltd Laser recording heat-sensitive recording medium
JP2007125733A (en) * 2005-11-01 2007-05-24 Kyowa Hakko Kogyo Co Ltd Thermosensitive printing composition and printing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6042663U (en) * 1983-09-01 1985-03-26 野崎印刷紙業株式会社 thermal bill
JPH11327445A (en) * 1998-03-18 1999-11-26 Oji Paper Co Ltd Thermosensitive recording label
JP2000177201A (en) * 1998-12-14 2000-06-27 Toshiba Tec Corp Amount variable stamp issuing apparatus
JP2002347344A (en) * 2001-05-25 2002-12-04 Nippon Paper Industries Co Ltd Laser recording heat-sensitive recording medium
JP2007125733A (en) * 2005-11-01 2007-05-24 Kyowa Hakko Kogyo Co Ltd Thermosensitive printing composition and printing method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009286864A (en) * 2008-05-28 2009-12-10 Dic Corp Adhesive film for laminate and laser-marking label
WO2013087344A1 (en) 2011-12-14 2013-06-20 Robert Bosch Gmbh Method for producing an inscribed battery cell housing
DE102011088564A1 (en) 2011-12-14 2013-06-20 Robert Bosch Gmbh Method for producing a labeled battery cell housing
JP2013223831A (en) * 2012-04-20 2013-10-31 Toyota Motor Corp Laser decorating method
CN108511325A (en) * 2018-04-19 2018-09-07 蚌埠华特科技有限公司 A kind of preparation process of fingerprint module chip Surface L OGO

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