JPH05301458A - Resin composition for laser marking - Google Patents
Resin composition for laser markingInfo
- Publication number
- JPH05301458A JPH05301458A JP4109373A JP10937392A JPH05301458A JP H05301458 A JPH05301458 A JP H05301458A JP 4109373 A JP4109373 A JP 4109373A JP 10937392 A JP10937392 A JP 10937392A JP H05301458 A JPH05301458 A JP H05301458A
- Authority
- JP
- Japan
- Prior art keywords
- copper carbonate
- resin composition
- laser marking
- marking
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000010330 laser marking Methods 0.000 title claims abstract description 12
- 239000011342 resin composition Substances 0.000 title claims description 13
- 229940116318 copper carbonate Drugs 0.000 claims abstract description 17
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 claims abstract description 17
- DMRJVKOYZFHZJH-UHFFFAOYSA-L copper;hydrogen carbonate;hydroxide Chemical compound [OH-].[Cu+2].OC([O-])=O DMRJVKOYZFHZJH-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 239000000945 filler Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000004040 coloring Methods 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、レーザビーム照射の
エネルギにより変色を引き起こす化学的作用を利用する
レーザマーキングに適した樹脂組成物に関するもので、
特に、マーキングの視認性を高めるための改良に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition suitable for laser marking utilizing a chemical action that causes discoloration by the energy of laser beam irradiation.
In particular, it relates to an improvement for improving the visibility of marking.
【０００２】[0002]
【従来の技術】電子部品等のマーキングは、慣用的に
は、捺印、転写、印刷等の方法で、インクを部品本体に
所望のパターンをもって付着させた後、加熱または紫外
線照射により硬化させることにより行なわれていた。こ
れに対し、最近では、レーザマーキングの優位性が認め
られ、その実用化の事例が増えつつある。2. Description of the Related Art Marking of electronic parts and the like is conventionally carried out by applying ink in a desired pattern to a main body of a part by a method such as marking, transfer, printing, etc., and then curing by heating or ultraviolet irradiation. It was being done. On the other hand, recently, the superiority of laser marking has been recognized, and cases of its practical application are increasing.
【０００３】レーザビーム照射によるマーキングとして
は、被照射面の表面層の蒸発、除去あるいは発泡等の物
理的作用を利用するものと、外装材料に予め発色物質を
混合しておき、レーザビーム照射のエネルギにより変色
を引き起こす化学的作用を利用するものとがある。Marking by laser beam irradiation is performed by using a physical action such as evaporation, removal, or foaming of the surface layer on the surface to be irradiated, and a coloring substance previously mixed in the exterior material, and then laser beam irradiation is performed. Some utilize a chemical action that causes discoloration due to energy.
【０００４】前者の例としては、特開昭６３−２１６７
９０号公報や特公平２−４７３１４号公報に記載された
ものがあるが、マーキングとしての十分な視認性が得ら
れる材料が限定されるため、汎用性に欠けるという問題
がある。An example of the former is Japanese Patent Laid-Open No. 63-2167.
There are those described in Japanese Patent Publication No. 90 and Japanese Patent Publication No. 2-47314, but there is a problem that they lack versatility because materials that can obtain sufficient visibility as marking are limited.
【０００５】後者の例としては、特開昭６１−１９２７
３７号公報において、多数の発色物質が提案されている
が、使用するレーザ発振器が高出力のものに限定され、
高価格となり、投資効率が低いため実用的ではない。An example of the latter is Japanese Patent Laid-Open No. 61-1927.
Although a large number of color-developing substances have been proposed in Japanese Patent No. 37, the laser oscillator used is limited to those having high output,
High price and low investment efficiency make it impractical.
【０００６】また、特開昭６０−１６６４８８号公報お
よび特開平３−１０８８４号公報では、白発色可能な添
加物が示されており、これらは、地色が濃い、あるいは
暗い色彩の場合には、有効であるが、淡色または明色系
の場合には、視認性が不足して実用にならない。[0006] Further, JP-A-60-166488 and JP-A-3-10884 disclose additives capable of developing white color. These additives are used when the background color is deep or dark. Although effective, in the case of a light color or a light color system, the visibility is insufficient and it is not practical.
【０００７】さらに、黄ないし茶系の地色の場合に限定
すれば、特開昭６０−１５５４９３号公報に暗赤色の発
色が可能なものが示されている。Further, limited to the case of yellow or brown background color, Japanese Patent Laid-Open No. 60-155493 discloses a material capable of developing a dark red color.
【０００８】さらに、地色を選ばず黒発色を可能とする
方法が、特開平２−４８９８４号公報で提案されている
が、発色剤に無機鉛化合物を使用することから、労働衛
生上の懸念がある。[0008] Further, a method of enabling black color development regardless of the background color is proposed in Japanese Patent Laid-Open No. 2-48984, but since an inorganic lead compound is used as a color former, there are concerns about occupational health. There is.
【０００９】[0009]
【発明が解決しようとする課題】それゆえに、この発明
の目的は、レーザビーム照射による黒発色を可能にし
て、背景色との視認性を高めることができるレーザマー
キング用樹脂組成物を提供しようとすることである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a resin composition for laser marking, which enables black color development by laser beam irradiation and enhances visibility with a background color. It is to be.
【００１０】この発明の他の目的は、レーザマーキング
によって電気的特性が低下しないレーザマーキング用樹
脂組成物を提供しようとすることである。Another object of the present invention is to provide a resin composition for laser marking whose electric characteristics are not deteriorated by laser marking.
【００１１】[0011]
【課題を解決するための手段】この発明によるレーザマ
ーキング用樹脂組成物は、少なくとも樹脂、硬化剤およ
び充填剤を含有し、さらに、炭酸銅、炭酸銅水和物、塩
基性炭酸銅および塩基性炭酸銅水和物からなる群から選
ばれた少なくとも１種を含有することを特徴としてい
る。The resin composition for laser marking according to the present invention contains at least a resin, a curing agent and a filler, and further, copper carbonate, copper carbonate hydrate, basic copper carbonate and basic copper carbonate. It is characterized by containing at least one selected from the group consisting of copper carbonate hydrate.
【００１２】また、上述した炭酸銅、炭酸銅水和物、塩
基性炭酸銅および塩基性炭酸銅水和物からなる群から選
ばれた少なくとも１種は、この組成物１００重量部に対
して１〜２５重量部含有することが好ましい。Further, at least one selected from the group consisting of the above-mentioned copper carbonate, copper carbonate hydrate, basic copper carbonate and basic copper carbonate hydrate is used in an amount of 1 per 100 parts by weight of this composition. It is preferable to contain -25 parts by weight.
【００１３】[0013]
【作用】炭酸銅、炭酸銅水和物、塩基性炭酸銅および塩
基性炭酸銅水和物は、いずれも、粉末状態で緑青色であ
るが、レーザビームを照射すると、その熱エネルギによ
り、脱炭酸および／または脱水を起こして、酸化第２銅
に変化し、黒色となることが見出された。したがって、
上記の化合物の少なくとも１種を含有させた樹脂組成物
の表面に、レーザマーキングを行なうことが可能とな
る。[Function] Copper carbonate, copper carbonate hydrate, basic copper carbonate and basic copper carbonate hydrate are all greenish blue in powder state, but when irradiated with a laser beam, they are desorbed by thermal energy. It was found that carbonic acid and / or dehydration occurred to change to cupric oxide, which turned black. Therefore,
It becomes possible to perform laser marking on the surface of the resin composition containing at least one of the above compounds.
【００１４】[0014]
【発明の効果】したがって、この発明によれば、従来困
難であった、青ないし緑色系の樹脂組成物に対して、レ
ーザビーム照射により、その表面に鮮明な黒色マーキン
グを施すことができる。それゆえに、この発明を電気ま
たは電子部品のマーキングに適用すれば、これらの部品
の製造工程の能率化およびマーキング処理時間の短縮、
ならびに使用材料費の削減を図ることができ、その結
果、製造工程の合理化およびコストダウンを達成できる
とともに、マーキングの品質（耐溶剤性、耐摩耗性）の
向上を図ることができる。Therefore, according to the present invention, it is possible to make a clear black marking on the surface of a blue or green resin composition, which has been difficult in the past, by laser beam irradiation. Therefore, if the present invention is applied to the marking of electric or electronic parts, the efficiency of the manufacturing process of these parts and the reduction of the marking processing time,
In addition, the cost of materials used can be reduced, and as a result, the manufacturing process can be rationalized and the cost can be reduced, and the quality of marking (solvent resistance, abrasion resistance) can be improved.
【００１５】この発明において、前述したように、炭酸
銅、炭酸銅水和物、塩基性炭酸銅および塩基性炭酸銅水
和物の少なくとも１種の含有率は、１〜２５重量％であ
ることが好ましい。なぜなら、１重量％未満では、レー
ザビーム照射時に変色が少なく、不鮮明なマーキングと
なり、他方、２５重量％を超えると、樹脂組成物の電気
絶縁性が低下し、絶縁材料としての使用には適さなくな
るためである。したがって、上述のような含有率に選ぶ
ことにより、電気または電子部品の樹脂被覆材として使
用し、レーザマーキングを施しても、電気的特性を維持
することができる。In the present invention, as described above, the content of at least one of copper carbonate, copper carbonate hydrate, basic copper carbonate and basic copper carbonate hydrate is 1 to 25% by weight. Is preferred. Because, if it is less than 1% by weight, discoloration is small and the marking becomes unclear when irradiated with a laser beam, while if it exceeds 25% by weight, the electrical insulation of the resin composition is deteriorated and it becomes unsuitable for use as an insulating material. This is because. Therefore, by selecting the content rate as described above, it is possible to maintain the electrical characteristics even when used as a resin coating material for electric or electronic parts and subjected to laser marking.
【００１６】[0016]
【実施例】【Example】
【００１７】[0017]
【表１】 上記表１に示すような組成を有する試料１〜４の樹脂組
成物を用意し、レーザ発色性および絶縁破壊電圧を評価
した。レーザビーム照射は、ＴＥＡ炭酸ガスレーザ（出
力エネルギ密度６Ｊ／ｃｍ2 ）を用いて、１μｓｅｃ間
行なった。また、絶縁破壊電圧は、ＪＩＳ−Ｋ６９１１
に従って測定した。[Table 1] The resin compositions of Samples 1 to 4 having the compositions shown in Table 1 above were prepared, and the laser coloring property and the dielectric breakdown voltage were evaluated. The laser beam irradiation was performed for 1 μsec using a TEA carbon dioxide gas laser (output energy density 6 J / cm 2 ). The breakdown voltage is JIS-K6911.
Was measured according to.
【００１８】上記表１における試料１および２について
は、発色剤含有率が１〜２５重量％の範囲内にあり、そ
のため、優れたレーザ発色性および比較的高い絶縁破壊
電圧を示していることがわかる。試料３については、発
色剤含有率が０．８重量％と、１重量％未満であるの
で、比較的高い絶縁破壊電圧を示すが、レーザ発色性に
劣ることがわかる。試料４については、発色剤含有率が
２８．６重量％と、２５重量％を超えているので、優れ
たレーザ発色性を示すが、絶縁破壊電圧が低くなってい
る。Samples 1 and 2 in Table 1 above had a coloring agent content in the range of 1 to 25% by weight, and therefore exhibited excellent laser coloring and relatively high dielectric breakdown voltage. Recognize. Sample 3 has a coloring agent content of 0.8% by weight, which is less than 1% by weight, and thus shows a relatively high dielectric breakdown voltage, but it is understood that the laser coloring property is inferior. Sample 4 has a coloring agent content of 28.6% by weight, which exceeds 25% by weight, and thus exhibits excellent laser coloring property, but the dielectric breakdown voltage is low.
【００１９】上述した実験では、発色剤として塩基性炭
酸銅を用いたが、その他、炭酸銅、炭酸銅水和物または
塩基性炭酸銅水和物またはこれらの混合物を用いても、
同様の結果が得られることが確認されている。In the above-mentioned experiment, basic copper carbonate was used as the color former, but in addition, copper carbonate, copper carbonate hydrate, basic copper carbonate hydrate or a mixture thereof may be used.
It has been confirmed that similar results are obtained.
【００２０】また、上述した実験例では、エポキシ樹脂
を用いたが、その他、アクリル、ポリエステル、ウレタ
ン等、他の熱硬化性樹脂を用いてもよい。Although the epoxy resin is used in the above-mentioned experimental example, other thermosetting resins such as acrylic, polyester and urethane may be used.
【００２１】なお、樹脂組成物の組成に関して、発色剤
以外は既知の技術を用いることができる。また、樹脂組
成物の着色には、発色剤の自然の着色以外に、たとえ
ば、青色または緑色の着色顔料として、フタロシアニン
ブルーやフタロシアニングリーンを使用してもよい。さ
らに、青もしくは緑色、または黒色以外の着色剤を併用
して、中間色とすることも可能である。Regarding the composition of the resin composition, known techniques can be used except for the color former. In addition to the natural coloring of the color former, for example, phthalocyanine blue or phthalocyanine green may be used as a blue or green coloring pigment for coloring the resin composition. Furthermore, it is also possible to use a coloring agent other than blue or green or black to obtain an intermediate color.
Claims (2)
含有し、さらに、炭酸銅、炭酸銅水和物、塩基性炭酸銅
および塩基性炭酸銅水和物からなる群から選ばれた少な
くとも１種を含有する、レーザマーキング用樹脂組成
物。1. At least one selected from the group consisting of copper carbonate, copper carbonate hydrate, basic copper carbonate and basic copper carbonate hydrate, containing at least a resin, a curing agent and a filler. A resin composition for laser marking containing:
銅および塩基性炭酸銅水和物からなる群から選ばれた少
なくとも１種を、当該組成物１００重量部に対して１〜
２５重量部含有する、請求項１に記載のレーザマーキン
グ用樹脂組成物。2. At least one selected from the group consisting of copper carbonate, copper carbonate hydrate, basic copper carbonate and basic copper carbonate hydrate is used in an amount of 1 to 100 parts by weight of the composition.
The resin composition for laser marking according to claim 1, which contains 25 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4109373A JPH05301458A (en) | 1992-04-28 | 1992-04-28 | Resin composition for laser marking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4109373A JPH05301458A (en) | 1992-04-28 | 1992-04-28 | Resin composition for laser marking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05301458A true JPH05301458A (en) | 1993-11-16 |
Family
ID=14508596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4109373A Withdrawn JPH05301458A (en) | 1992-04-28 | 1992-04-28 | Resin composition for laser marking |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05301458A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006030654A1 (en) | 2004-09-03 | 2006-03-23 | Toyo Ink Mfg. Co., Ltd. | Recording material and method of recording |
-
1992
- 1992-04-28 JP JP4109373A patent/JPH05301458A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006030654A1 (en) | 2004-09-03 | 2006-03-23 | Toyo Ink Mfg. Co., Ltd. | Recording material and method of recording |
| US8461075B2 (en) | 2004-09-03 | 2013-06-11 | Toyo Ink Mfg. Co., Ltd. | Recording material and method of recording |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990706 |