What factors affect the airtightness of acrylic lotion bottles?

As a packaging material for skin care products, the airtightness of acrylic lotion bottles is one of the important factors to ensure product quality and shelf life. Airtightness refers to the gas permeability of the packaging container, that is, whether the packaging container can effectively isolate the exchange of external gas and internal gas of the packaging.
Material selection is one of the key factors affecting the airtightness of acrylic lotion bottles. Usually, acrylic lotion bottles are made of plastic materials such as polypropylene (PP) or polyethylene (PE), and the airtightness of different materials is different. Polyethylene usually has good airtightness, which can effectively isolate the penetration of oxygen and moisture, and help maintain the freshness and stability of the product. Therefore, when selecting acrylic lotion bottle materials, it is necessary to consider the airtightness of the material to ensure the quality and safety of product packaging.
The packaging structure and design also affect the airtightness of acrylic lotion bottles. The sealing and rationality of the design directly affect the performance of airtightness. For example, the sealing performance of the bottle cap and the selection of the sealing gasket will affect the airtightness. Reasonable design of the bottle mouth structure and sealing device can help effectively prevent gas penetration and improve the airtightness of product packaging.
Production process and technical level are also important factors affecting the airtightness of acrylic lotion bottles. The process control and technical requirements in the production process are directly related to the quality and performance of product packaging. For example, in the injection molding process, parameters such as temperature control, pressure control and injection speed will affect the sealing performance of the bottle. By optimizing the production process and improving the technical level, the air tightness of the acrylic emulsion bottle can be improved to ensure the quality and stability of the product packaging.
External environmental conditions will also affect the air tightness of the acrylic emulsion bottle. For example, factors such as temperature and humidity will affect the performance of the packaging container material, which in turn affects the air tightness. During storage and transportation, it is necessary to pay attention to controlling environmental conditions to avoid excessive temperature or humidity that will cause the air tightness of the packaging container to decrease, thereby affecting the quality and safety of the product.