A kind of preparation method of laminated inductor and laminated inductor

Abstract

The invention discloses a fabrication method of a lamination inductor. The fabrication method comprises the steps of uniformly mixing PVB resin, a first solvent and a first plasticizer to obtain a binding agent; uniformly mixing the binding agent, ceramic powder, a second solvent and a second plasticizer by a ball-milling process or sanding process to obtain casting paste; performing casting operation on the casting paste by a casting machine, coating the casting paste onto a PET film by a casting cutter in a scrape coating mode to obtain an insulation layer film; printing an inner electrode onto the insulation layer film by a silk-screen printing process to obtain a single-layer coil; repeating the previous steps to obtain a plurality of single-layer coils, laminating the plurality of single-layer coils, and performing cutting to form a complete inductance coil; and performing gluing and sintering on the inductance coil, and then assembling in a shell by end sealing and electroplatingprocess to fabricate the lamination inductor. By the fabrication method, the mixing uniformity and dispersion performance of the resin and the ceramic powder can be effectively improved, and the reliability and the stability of a lamination inductance product are further effectively improved.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a method for preparing a laminated inductor and the laminated inductor. Background technique [0002] At present, with the continuous development of science and technology, the production and processing of electronic components by lamination has become one of the most important methods, which can produce laminated chip inductors on a large scale. [0003] In the prior art, in the process of preparing laminated inductors, the ceramic powder mixing stage is to directly mix PVB resin, solvents, additives, etc. with the ceramic powder, but this mixing method will cause resin and porcelain powder to mix Unevenness and poor dispersion can easily lead to streaks, pinholes, and bubbles in the cast insulating carrier. These phenomena will cause poor crystallization of the sintered porcelain body, resulting in uneven distribution of internal electrodes and poor product qualit...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for preparing a laminated inductor and a laminated inductor to solve the technical problems of the existing laminated inductors that the resin and the porcelain powder are unevenly mixed and poorly dispersed in the porcelain powder mixing stage, which affects product quality, thereby effectively Improve the uniformity and dispersion of resin and porcelain powder mixing, thereby effectively improving the reliability and stability of laminated inductor products

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