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METHOD OF EFFECTING LASER MARKING HAVING A SPECIAL EFFECT ON PLASTIC PRODUCT IN ANY FORM
METHOD OF EFFECTING LASER MARKING HAVING A SPECIAL EFFECT ON PLASTIC PRODUCT IN ANY FORM
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机译:影响激光标记以任何形式对塑料产品产生特殊影响的方法
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摘要
PURPOSE: To form a mark which one can see at a specified illumination angle and observation angle but can not see at other angles by using MoS2 as an additive and specifying the wavelength of a laser parameter, pulse energy density, and pulse amplitude. ;CONSTITUTION: In a method of marking, a plastic product is sensitive to radiation, contains an additive which induces a change in light reflection, and is irradiated with a laser beam pulse so that the laser beams are converged on the surface of the product corresponding to the shape of a mark to be formed to produce visual effects in the irradiated area without being damaged. In this laser marking method, MoS2 is used as the additive, the wavelength of a laser parameter, pulse energy density, and pulse amplitude are controlled to form the effect mark the contrast of which is changed visually by an irradiation angle.;COPYRIGHT: (C)1991,JPO
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