The steam shrink machine indeed excels in terms of shrinking effect and protection of bottled liquids. This is closely related to its unique working method and technical characteristics, which are specifically reflected in the following aspects:
- Close fitting, reducing gaps: The constant temperature property of steam enables the shrink film to be heated evenly, allowing it to tightly wrap the bottle body or bottle combinations (such as multi-bottle 捆绑 packaging). There are almost no bubbles or wrinkles, minimizing the gap between the film and the bottle body. This tightness can effectively block the entry of external dust and moisture, forming the first line of protection especially for liquids that are prone to moisture or contamination (such as beverages, cosmetic stock solutions, and pharmaceutical oral liquids).
- Stabilizing the bottle body, preventing shaking and collision: For collective packaging of bottled liquids (such as 6-pack beverages and 4-pack skincare products), the film after steam shrinking can firmly fix multiple bottles into a whole. This reduces collisions and friction between bottles during transportation and handling, lowering the risk of bottle breakage and liquid leakage caused by shaking.
- Controllable temperature, avoiding high-temperature damage: The temperature of steam shrinking is relatively mild and uniform. Compared with the possible local high temperatures of some hot-air shrink machines, it is more suitable for packaging temperature-sensitive liquids. For example, for plastic bottles of fruit juice, dairy products, etc., excessive heat may cause the bottle body to deform or the liquid to deteriorate. However, the constant temperature property of steam shrinking can reduce such risks, ensuring that the film shrinks properly without affecting the composition and taste of the liquid.
- Adapting to various bottle types, providing all-round protection: Whether it is round bottles, square bottles, flat bottles, or bottles with special-shaped structures (such as pump-type bottles, wide-mouth bottles), steam can evenly cover the film through multi-angle nozzles, ensuring that every part is tightly shrunk and fitted. Especially for edge positions such as bottle mouths and bottle bottoms, the shrunk film can tightly wrap them, avoiding liquid leakage due to loose packaging (for example, when the bottle mouth gasket is slightly loose, the shrink film can help enhance the sealing performance).
- Food and beverage industry: After bottled water, carbonated drinks, etc., have their labels shrunk by steam, the labels can not only beautify the appearance but also form a "protective film" on the bottle body. This reduces scratches on the bottle body during storage and transportation, and also prevents liquid overflow caused by slight extrusion deformation of the bottle body.
- Daily chemical and pharmaceutical industries: For liquids such as shampoo, disinfectant, and medicinal alcohol, after being packaged by steam shrinking, they can prevent leakage caused by accidental loosening of bottle caps during transportation, and also avoid external pollutants from contacting the bottle body, ensuring the purity and safety of the liquids.
In conclusion, with the characteristics of uniform shrinking, mild heating, and strong adaptability, the steam shrink machine plays an important role in protecting the sealing, stability, and safety of bottled liquids. It is a practical and reliable equipment in liquid product packaging.
