Aviation fluorine-containing polymer insulated wire and cable surface laser character printing method

Abstract

The invention provides an aviation fluorine-containing polymer insulated wire and cable surface laser character printing method. The method has the advantages that the surfaces of a wire and a cable are irradiated with excimer lasers with center laser density, so that titanium dioxide molecules contained in insulating or sheath materials of the wire and the cable change color due to induction, the original white color is changed into the black color, and the purpose of identification is achieved; the identification generated according to the method is permanent and can pass a fastness test of any standard, and meanwhile characters are clear. For a wire and a cable which are not round, the character printing purpose can not be achieved by the adoption of a type wheel printing method.

Description

technical field [0001] The method belongs to the field of wire and cable processing, and in particular relates to a laser printing method on the surface of an aviation fluorine-containing polymer insulated wire and cable. Background technique [0002] The insulation and sheath materials used in aviation fluorine-containing polymer insulated wire and cable are cross-linked ethylene tetrafluoroethylene copolymers. This type of material has excellent properties such as low density, high strength, radiation resistance, acid and alkali resistance, and flame retardancy. Performance, however, its excellent chemical stability and non-adhesiveness make it very difficult to print on the surface of this type of wire and cable. At the same time, according to the standard requirements of the aviation industry, its printing firmness should pass 250 times of scratching test, Its requirements are very demanding. [0003] At present, there are mainly the following printing methods: code pri...

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Problems solved by technology

[0004] Among the above methods, the first method has poor printing firmness for fluoroplastic printing and cannot meet the standard requirements; although the second method has certain effects, it needs to be equipped with a lot of printing wheels to meet the requirements due to the limitation of printing wheels. Different specifications and different types of cables are used. At the same time, for wires and cables that are not round in appearance, the ink cannot be touched by the sunken place, resulting in unclear printed marks

The third method is immature in domestic application at present. After use, it cannot meet the requirements for the firmness of the printed logo. At the same time, it is dangerous and extremely unsafe.

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