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How to Improve the Packaging Quality of Medicinal Spray Bottles? - Maypak

April 21, 2023

It is understood that the current spray bottle packaging is only limited to the field of cosmetics and pharmaceuticals, and is less used in other fields. For example, in the field of pesticides with relatively large demand, reasonable products have not been developed for spray bottle packaging. While the market is vacant, there are actually huge market opportunities. In the future development, spray bottle packaging can tap into broad fields such as pesticides, injecting new vigor and vitality into the development of the industry. But for the development of every industry, quality is an eternal topic, and for the development of spray bottle packaging, quality is also crucial. Enterprises need to "take quality as the criterion" to open up a broader market. So where can we start with the quality of spray bottle packaging?


During the interview, relevant technicians said that the most critical thing in spray bottle packaging is the quality of the nozzle, which directly determines the spray effect. But from the current point of view, the quality of many nozzles on the market is worrying, and the nozzles are often broken. After the nozzle is broken, the contents of the spray bottle, such as medicines, cannot be used, which brings huge troubles to people.


For spray bottle manufacturers, if they want to improve product quality and user experience, they must first start with the nozzle and control the quality of the nozzle. The author learned that the nozzle of the spray plastic bottle is made of polyvinyl chloride. From the perspective of performance, polyvinyl chloride material has many advantages, but from the perspective of molding, the fluidity of polyvinyl chloride melt is poor, and the shrinkage rate is low. Relatively low, molding is not very easy. However, spray plastic bottles are prone to defects such as insufficient pouring and shrinkage cavities during molding. When the molding temperature is relatively high, it is easy to decompose hydrogen chloride, and if the injection speed is too fast, it will shrink. For the molding temperature and residence time, the gating system should be thick and short, the cross-section of the feed inlet should be larger, the cooling time should not be too fast, and a large-diameter nozzle should be selected.


In addition, the spray head of the spray plastic bottle has relatively high requirements on the precision of the structure and size of the plastic part. In order to obtain qualified plastic parts, enterprises should not only choose the raw materials of plastic parts reasonably, but also consider the structural manufacturability of plastic parts, because the structural manufacturability of plastic parts is directly related to the design of molds, only plastic parts Only when the design meets the requirements of the molding process can a reasonable mold structure be designed, so that defects such as air bubbles, shrinkage cavities, depressions, and cracks can be prevented during molding. Not only that, but it can also improve the production efficiency of spray plastic bottles. Relevant technical personnel emphasized that when designing the nozzle of the spray plastic bottle, the surface of the part must be free from defects, burrs, and insufficient pouring.


With the continuous development of the market, the usage scenarios of spray bottle packaging will become more and more diversified. In addition to the cosmetics and pharmaceutical markets, many daily cleaners are also packaged in spray bottles. Therefore, it is very important to improve the quality of spray bottle packaging. In the design and production process of spray bottles, in addition to ensuring the quality of the spray head, other elements are also worth noting. For example, the service life of spray plastic bottles is relatively long. In the process of repeated use, some bacteria are easy to grow on the surface of plastic bottles, which will affect the health of users.














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