According to an article on ScienceDirect, glass extrusion offers unique benefits for manufacturing glasses that are challenging or impossible to produce using traditional methods like casting, blowing, or drawing. This technique is particularly suitable for glasses with a narrow working range, those prone to crystallization, or those with a high softening point.

By subjecting the glass to extrusion pressure, the working range can be expanded to higher viscosities, allowing for easier control of the manufacturing process at lower crystallization rates and temperatures. Additionally, extrusion enables the production of glass products with non-circular cross-sections.

The extrusion process can utilize frit as a key component. Quantitative measurements have demonstrated that the flow behavior of the glass aligns well with the predictions of the Hagen-Poiseuille law.

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