Resin composition capable of laser marking method, and marked molded article
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United States of America Patent
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Jul 1, 2003
Grant Date -
N/A
app pub date -
Jan 26, 2001
filing date -
Jul 27, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A resin composition capable of laser marking according to the present invention includes a polyolefin resin in combination with a laser-sensitive component such as a carbon black or metallic compound white pigment and a dispersing aid such as a higher fatty acid compound. The polyolefin resin includes, for example, a polypropylene. The resin composition may further include about 0.5 to 30 parts by weight of an elastomer relative to 100 parts by weight of the polyolefin resin. By irradiating an surface of a molded article obtained from the resin composition with a laser, a mark having a sharp and uniform contrast can be formed on the surface of the molded article.
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