Laser-markable molding masses and products obtained therefrom and method for laser marking

Abstract

MANUFACTURING PROCESS AND END PRODUCT OF A WIRE-LIKE RECTANGULAR SECTION, described as a manufacturing process and end product of a wire-like rectangular section which, according to the characteristics thereof, possesses as a basic principle to provide the formation of a specific and proprietary manufacturing process for producing wire-like rectangular sections ( 1 ) specifically for the utilization in metallic wire cloths for containers, partitions, trays and similar items and having as a basis a fully acceptable substituting alternative for the wire raw material, possessing a high initial manufacturing cost, which is the utilization of flat steel parings ( 2 ) by means of a complete and sequential straightening and shaping procedure thereof so as to obtain a wire-like rectangular section ( 1 ) bent and dented to form a rectangular section.

Description

technical field [0001] The present invention relates to novel molding compositions based on partially crystalline engineering thermoplastics which lead to laser-markable molded articles with improved marking quality. The invention further relates to moldings produced from these laser-markable molding compositions, to laser marking processes, and to the use of selected additives for laser marking. Background technique [0002] Partially crystalline thermoplastics have been used as materials for a long time. In addition to the mechanical, thermal, electrical and chemical properties of these materials, functionalities such as the ability to mark with lasers are gaining more and more attention. For example, applications in the field of household products, in keyboards and in the field of electronic equipment should be mentioned. Here, the application requires a high contrast between the laser-inscribed marking and the polymer matrix as background. Furthermore, aesthetically f...

AI Technical Summary

Problems solved by technology

[0023] If light-scattering particles are used as laser-sensitive additives, which act as white pigments, this solution is limited by the fact that although the light sensitivity increases with increasing additive content, the contrast of the marking as well as the penetration depth of the marking may be decrease

[0024] If metal compounds (e.g. oxides or salts) are used, the respective intrinsic color often promotes discoloration of the substrate and is often detrimental to aesthetics

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