The hottest polypropylene will become a new favori

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Polypropylene will become a new favorite in the pharmaceutical packaging market

people have always been very strict about the plastic film used in the blister packaging of drugs so that customers' work will not suffer additional losses: thin and has sufficient barrier performance, easy to tear but not easy to crack, high transparency, drugs at a glance, and so on. Therefore, pharmaceutical companies are very cautious in choosing materials for blister packaging

the demand for plastic packaging materials has increased greatly

now the most commonly used blister packaging materials for medicine are polyvinyl chloride (PVC) and polyvinylidene chloride (PVDC). PVC for blister packaging is mainly based on its good compatibility, easy molding and sealing, low price and other advantages. However, PVC has poor thermal stability and low moisture resistance. PVDC film is a kind of film with the best barrier performance. It can be used under high temperature and high humidity conditions. Its performance is similar to that of PVC, and it is more widely used than PVC

with the in-depth development of GMP transformation in pharmaceutical factories, some backward production equipment that does not meet the requirements of drug production quality will be eliminated, and drug packaging is becoming increasingly rigorous in material selection. In China, there are more than 2000 pharmaceutical packaging enterprises, which can produce more than 30 varieties of pharmaceutical packaging materials (including plastics) in six major categories, which can basically meet the needs of the domestic pharmaceutical industry, and the annual sales volume accounts for about 15% of the total sales volume of the pharmaceutical industry

Liang Wenbei, an expert in the pharmaceutical packaging market of the special film department of Honeywell International (Asia Pacific) company, said that in the past, the packaging material of Chinese drugs was random, especially in terms of moisture-proof technology, which was far lower than the international market level, and the damage rate of products was very high. Now pharmaceutical manufacturers have put forward higher requirements for pharmaceutical packaging materials. In this environment, it is expected that plastics will have a lot of room for development in the pharmaceutical market

pp materials are favored

Liang Wenbei said that at present, China's new pharmaceutical packaging market is developing rapidly, with an annual growth rate of about 14%. Many packaging have begun to be produced and processed in China, so the number of plastics exported abroad for pharmaceutical packaging is getting smaller and smaller. The world trend of drug packaging development is that the mainstream packaging with 100 capsules per bottle will become increasingly weak, and blister packaging will be replaced. The new favorite of blister packaging materials, polypropylene (PP can reduce fuel consumption and carbon dioxide emissions at the same time), blister packaging was introduced in the early 1980s. With the rapid development of packaging technology and pharmaceutical industry, the shortcomings of PVC and PVDC continue to appear. For example, the water vapor barrier performance of PVC is poor, which is difficult to meet higher production requirements, and many people think that PVDC is incredible, and the processing performance is not ideal

therefore, some plastic and pharmaceutical packaging manufacturers have developed blister packaging plastics that can complement the above two properties. PP is one of the materials favored by the market. PP is a partially crystalline plastic. In the production process, PP will be in a high elastic state after biaxial stretching, and the crystal will be destroyed during heating, making the film shrink significantly. In addition, the tensile strength of PP sheet is reduced to zero in the production process of the rolling process. Because its internal crystal is very small, if combined with the quenching technology, the adverse production situation that the plastic is in a high elastic state can be avoided. Because PP has this characteristic, it is selected as blister. 7. Speed regulation range: 1 ⑶ when packaging materials of 00mm/min, it overcomes the shortcomings of PVC and PVDC. For example, PP molecules have no polarity, so it will not produce the situation of adhesion between PVDC and metal production equipment, and its processing performance is far better than that of PVC and PVDC

source: China Medical News

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