Film suitable for laser cutting

Abstract

The invention discloses a film suitable for laser cutting. The film is characterized in that the film has a three-layer structure, the total thickness of the film is 80 [mu]m, the thickness of the first layer is 25 [mu]m, the formula of the first layer comprises 20% of linear low density polyethylene, 77% of low density polyethylene and 3% of white master batch, the thickness of the second layer is 30 [mu]m, the formula of the second layer comprises 95% of low density polyethylene, 3% of white master batch and 2% ofLMB master batch, the thickness of the third layer is 25 [mu]m, the formula of the third layer comprises 98% of low-density polyethylene and 2% of LMB master batch, the LBM master batch is prepared by mixing a nanoscale laser absorbent and the low-density polyethylene according to the mass ratio of 1:19 through a mixing mill, the processing temperature is lower than 180 DEG C during mixing, and the nanoscale laser absorbent is a cesium tungstate laser absorbent.

Description

technical field [0001] The invention relates to the field of printing, in particular to a film suitable for laser cutting. Background technique [0002] Laser cutting stainless steel plate is to irradiate the steel plate with a focused high-power-density laser beam, so that the irradiated material is rapidly melted, vaporized, ablated or reached the ignition point, and at the same time, the molten material is blown away by the high-speed airflow coaxial with the beam, so as to achieve stainless steel cutting. Process of plate cutting. Laser cutting is one of the thermal cutting methods, which has the advantages of fast speed, high precision and smooth incision, so it is more and more favored by enterprises. However, there are many deficiencies in laser cutting. For example, if the protective film is not attached during laser cutting, the surface of the metal plate will be easily damaged by the melt produced during the cutting process. However, when the traditional protectiv...

AI Technical Summary

Problems solved by technology

However, there are many deficiencies in laser cutting. For example, if the protective film is not attached during laser cutting, the surface of the metal plate will be easily damaged by the melt produced during the cutting process. However, when the traditional protective film is attached to the surface of the metal plate for cutting, Due to its insufficient absorption rate of laser (infrared light wave), it cannot melt quickly, which will cause problems such as uneven incision, bubbles in the protective film at the position of the incision or surface carbonization, which seriously affects the cutting work.

Secondly, the current laser cutting protective film usually uses black masterbatch (carbon black) as the laser absorber, which has a great influence on the color of the film, and is not suitable for white or light-colored products, and is not suitable for surface printing, and cannot meet various requirements. Production requirements