发明名称 |
Method of making a plastic material sensitive to laser radiation and enabling it to be marked by a laser, and articles obtained thereby |
摘要 |
An opacifier substance is added to a plastic material which is naturally transparent to laser radiation. The opacifier substance is added in powder form as a concentration of 2% to 6% by weight of the plastic material. The opacifier substance is preferably antimony oxide and the resulting plastic material is capable of being permanently marked by a laser beam and is suitable for providing animal ear tags. These tags may be marked with an automatically readable bar code and this code continues to be automatically readable over a period of several years use on the animal.
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申请公布号 |
US4816374(A) |
申请公布日期 |
1989.03.28 |
申请号 |
US19860849776 |
申请日期 |
1986.04.09 |
申请人 |
SOCIETE D'APPLICATIONS PLASTIQUES RHONE-ALPES (SAPRA) |
发明人 |
LECOMTE, GILBERT |
分类号 |
A01K11/00;B29C35/08;B29C59/16;B41M5/26;B44B7/00;G09F3/00;(IPC1-7):G03C1/72;B41M5/24;C08K3/00 |
主分类号 |
A01K11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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