High blocking near-infrared protective film

Abstract

The invention relates to a high-barrier near infrared protection film. The high-barrier near infrared protection film comprises a substrate layer and a barrier layer at the surface of the substrate layer, The barrier layer comprises the following raw materials in parts by weight: 30-45 parts of organosilicon modified polyurethane, 12-18 parts of an ethyl vinyl ether-benzyl acrylate copolymer, 8-10parts of PPE resin, 5-10 parts of a plasticizer, 7-15 parts of a near-infrared absorbent, and 0.5-2 parts of an anti-oxidant. The high-barrier near infrared protection film employs a composite structure of the substrate layer and the barrier layer, when a metal sheet is subjected to laser cutting by using laser, damage of the surface of the metal sheet can be effectively prevented, when a cold plastic forming processing process is carried out, the film is wrinkle-free and never broken, and the film has the advantages of good quality and better protection effect.

Description

technical field [0001] The invention relates to the field of thin film technology, in particular to a protective film with high near-infrared blocking. Background technique [0002] Laser processing is widely used due to its fast processing speed and the ability to realize dry processes, especially in various micro-processing fields, infrared lasers are often used. Laser cutting is known for its high speed, high precision and high cut finish. It not only saves a lot of molds, but also greatly shortens the development cycle of new products. After laser cutting, it is generally necessary to perform some cold plastic processing such as bending on the metal sheet. The existing processing method is generally to paste a layer of ordinary protective film on the metal plate, one is to paste the ordinary protective film product before laser cutting, but during laser cutting, due to the effect of low temperature and high pressure auxiliary gas, Ordinary protective film will form a ...

AI Technical Summary

Problems solved by technology

The existing processing method is generally to paste a layer of ordinary protective film on the metal plate, one is to paste the ordinary protective film product before laser cutting, but during laser cutting, due to the effect of low temperature and high pressure auxiliary gas, Ordinary protective film will form a large bubble at the cutting part, which will hinder the normal operation of the laser head, and in severe cases will cause damage to the laser head; the use of ordinary protective film will cause the film to wrinkle during cold plastic processing such as bending , Embrittlement and fracture, etc., poor mechanical properties, poor weather resistance, easy to oxidize in the air; and some protective films have poor heat insulation effect and poor transparency

Images