Method and apparatus for additive manufacturing of glass

The use of a polyimide-coated glass filament addresses nozzle damage and fire risks in glass 3D printing, ensuring safe and precise manufacturing of dense glass components by preventing filament breakage and fire spread.

JP7864816B2Active Publication Date: 2026-05-25ミハイル·フォーキン +2
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
ミハイル·フォーキン
Filing Date
2022-07-11
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

Existing glass 3D printing methods face issues such as nozzle damage, limited thickness/dimensions, time-consuming post-treatment, deformation, cracks, and fire hazards due to protective coatings that are not flame-retardant or self-extinguishing, leading to printing interruptions and quality issues.

Method used

Use of a glass filament with a polyimide-based, flame-retardant and self-extinguishing protective coating, applied during production, which is incinerated near the high-temperature zone to prevent fire spread and maintain mechanical strength, allowing for precise and safe 3D printing.

Benefits of technology

Enables the direct fabrication of dense glass components without toxic by-products, ensuring safety and improved printing accuracy by preventing filament breakage and fire hazards, while maintaining mechanical integrity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to an additive manufacturing method for producing three-dimensional components made of glass, comprising the steps of continuously feeding a glass filament (160) having a flame-retardant or self-extinguishing protective film (169) applied to its surface from a filament feeding nozzle (120) to a heating source, removing the flame-retardant or self-extinguishing protective film and softening the glass fiber, and applying the softened glass filament to a surface of a substrate (130) or object, wherein the flame-retardant or self-extinguishing protective film is made of a polyimide-based material and has a thickness in the range of 1 micron to 50 microns, and the fed glass filament length is less than 5 millimeters. The present invention also relates to glass filaments and uses thereof.
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