B grade medicinal glass material may disappear within 5 years

Glass has high transparency, high barrier properties and other materials unparalleled superior chemical stability, so the packaging containers made of glass are widely used in the chemical reagent industry, pharmaceutical industry, but also applies to the health food industry. At present, domestic health foods are packed in plastic, paper, glass, metal and so on. At present, the market share of glass consumption accounts for about pharmaceutical packaging. 10%, less than 1/3 of the entire health food market. At the same time, because of its excellent qualities such as light weight, low cost, good processing and printing performance, plastic packaging has captured a share of pharmaceutical glass bottles in the health care pharmaceutical packaging market. According to experts, in terms of health and medicine packaging, there is a certain gap between our country and international similar products, mainly glass materials. At present, the international pharmaceutical glass has generally used A-grade materials as packaging materials. The physical properties of such materials are more stable and can effectively protect the chemical properties of medicines and health foods. However, in China, except for a few joint ventures and large state-owned enterprises using a small amount of Grade A materials, the vast majority of companies still use Class B materials for glass packaging, and pharmaceutical glass manufacturing companies are still mainly producing Class B materials. In recent years, due to the development of China's pharmaceutical industry, pharmaceutical exports have been increasing. Foreign businessmen attach great importance to the quality of health medicine glass, especially for some relatively high-priced drugs, often require a glass quality inspection center issued a test certificate. Experts believe that the main reason for this phenomenon is that the upgrading of packaging materials has failed to keep up with the improvement. Packaging companies that rely on low profit have no overall planning and long-term consideration for “input” and “output”.

The relevant department predicts that China may cancel the use of Class B materials within five years.

Although glass is more suitable for medical and health food packaging due to its characteristics, As203 and Sb203 are often used as clarifying agents in glass, so some glasses contain As and Sb oxides. In particular, PbO and CdO are sometimes introduced into glass as components. Therefore, international or advanced national standards clearly specify the amount of glass As, Sb, Pd, and Cd precipitated; from the perspective of glass products, currently existing problems include glass products. Defects and appearance quality. However, the use of glass for health foods mainly refers to the water resistance of the inner surface. Such as 3.3 borosilicate glass and international neutral glass surface water resistance are HCI, while our neutral glass is HCI or HCB; the other hand, China's medicinal neutral glass does have some problems, such as alkali metal precipitation The amount is higher, and some may also appear to be dislodged. The heavy metal problem is ubiquitous at home and abroad. At present, there is no better solution. It can only be solved by reducing the amount of metal or replacing it with other substances. Judging from the type of medicinal glass, China urgently needs to establish a standard system for health-care medicinal glass. At present, the international standard ISO12775-1997 only provides for medical use of glass, mainly international neutral glass, borosilicate glass, soda-lime glass three. Among them, the soda-lime glass does not indicate medicinal use in this international standard, but in other international standards it is stipulated that as long as it is neutralised and has a water resistance of 121°C up to grade 2, it can be used medicinally. However, four types of glass are specified in the "industrial glass composition classification and test method" industry standard approved and passed by the State Drug Administration of China in 2003. Among them, China's neutral glass is clearly restricted and the focus is on the development of international neutral glass. Glass materials should be in line with international standards. In terms of glass material, glass material mainly refers to physical and chemical properties, but the most important one is chemical stability. Such as the international neutral glass and 3.3 borosilicate glass particles can reach a level of water resistance. However, most of the neutral glass particles in China are class 1 water-resistant and some are class 2 water-resistant. If we look at the amount of alkali precipitation from microscopically, our neutral glass is several times larger than international neutral glass. Experts emphasized that the soda-lime glass has a material requirement for neutralization. In international standards, the water resistance at 121°C is required to be better than or equal to Grade 2. Not all soda-lime glass can be used as a packaging container by neutralization treatment.

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