Laser marked plastic and preparation method thereof

Abstract

The invention relates to plastic which can be marked by laser, which comprises the following blended components in weight portion: 100 portions of plastic, 0.1 to 10 portions of powder rubber with the average grain diameter of between 50 and 200 nanometers and the gel content of over 60 weight percent, and 0.01 to 5 portions of pearlescent pigment or metallic oxide. The invention also relates to a method for preparing the plastic which can be marked by the laser. The preparation method comprises the steps of melting and blending the components comprising the plastic, the powder rubber and the pearlescent pigment to prepare the plastic which can be marked by the laser. The plastic which can be marked by the laser can obtain a laser mark with higher contrast grade under the action of the laser. The preparation method has the advantages of simple and reliable processes.

Description

technical field [0001] The invention relates to a markable plastic and a preparation method thereof, in particular to a laser-markable thermoplastic and a preparation method thereof. Background technique [0002] Labeling on produced items is becoming increasingly important in almost all industrial sectors. For example, it is often necessary to indicate the production date, expiration date, barcode, company's trademark, serial number, etc. on the item. [0003] At present, there are many technical methods for printing marks on objects, such as screen printing and transfer printing, embossing, embossing, ink printing, etc. are all well-known printing technologies. These printing methods are surface printing, which means that the resulting identification mark becomes difficult to read due to mechanical damage, friction, chemical action and the like, and this printing method is difficult to apply to curved or textured surfaces, Furthermore, the special processing costs requir...

AI Technical Summary

Problems solved by technology

[0011] However, it is known that the additives currently used for laser marking have certain disadvantages. They make dark markings on a light background lack sufficient contrast, that is, sharpness; or the markings have blurred lines and low sharp angles; If the amount is too much, the physical properties of the material will decrease, such as the impact performance, etc.; and the cost will increase more due to the addition of a large amount.