Neutral boron silicate glass used for medicinal mold-formed bottle and manufacturing method thereof

Abstract

Neutral borosilicate glass used for moulding medicinal bottles is provided, which pertains to the technology filed of glass containing aluminum, boron, 40 percent to 90 percent (by weight) of silicon dioxide and provides neutral borosilicate glass meeting the standard of medical packaging container (material) YBB00292002, YBB00322002. The glass contains 8-12 percent of B2O3 with expansion coefficient of 4.0-5.0 multiplied by 10<-6>/K, as well as a series of excellent physical and chemical properties such as good heat stability, strong acid-resistance, alkali-resistance, water-resistance and erosion-resistance. The invention adopts cold furnace top and deep bed, recycles volatiles of boron during the course of melting, thus effectively reducing boron volatilization, preventing unfavorable phenomenon from taking place, for example, the combined material layer from incrustation and reversing, and obtaining comparatively good economic benefit and quality benefit.

Description

technical field [0001] The invention belongs to the technical field of glass containing aluminum, boron and 40% to 90% (weight) of silicon dioxide, and specifically relates to a neutral borosilicate glass and a preparation method thereof. Background technique [0002] At present, the packaging materials used for injections and freeze-dried medicines used in the Chinese market are semi-neutral materials, which are prone to chemical reactions with the medicines during use, causing the medicines to deteriorate or reduce their efficacy, or glass to appear during the freeze-drying process. The phenomenon of bottom packaging, with China's accession to the WTO, the need for Chinese medicines to go abroad and the needs of the Chinese people for the improvement of health requirements, the advantages of borosilicate glass materials in various aspects are increasingly reflected, in the packaging materials of some medicines It is imperative to replace semi-neutral materials with borosil...

AI Technical Summary

Problems solved by technology

[0003] However, there is a large gap between the domestic manufacturing process and the international level, and it is difficult to meet the needs of high-end drugs for packaging. The packaging of domestic high-end drugs, especially the packaging of high-end biological agents and blood products, all rely on imports

Domestic borosilicate glass production is still in a blank state