What material is used for the inner cap of the Aluminum Plastic Cream Cap, and why is this material chosen?

The inner cap of the Aluminum Plastic Cream Cap is typically made of plastic, particularly Polypropylene (PP) material. PP is a widely utilized plastic material known for its various advantages, making it suitable for use as an inner cap in cosmetic packaging.
Corrosion resistance: PP material, as the primary material for the inner cap of Aluminum Plastic Cream Caps, exhibits excellent corrosion resistance. Cream products often contain various chemical ingredients such as oils, emulsifiers, preservatives, and fragrances, which under certain conditions may corrode packaging materials. However, PP's stable chemical properties and good corrosion resistance effectively resist the corrosive effects of these chemicals, ensuring that the inner cap remains undamaged or deformed during use. This not only extends the lifespan of the Aluminum Plastic Cream Cap but also guarantees the quality and safety of the cream products.
Strong sealing: Inner caps made of PP material and other plastics excel in sealing properties. Cream products require preservation of their original texture and aroma to prevent moisture evaporation and contamination from external sources. PP inner caps tightly adhere to the mouth of cream jars, forming an effective barrier to prevent cream leakage and the entry of contaminants. This robust sealing ensures the quality and stability of cream products while enhancing consumer experience.
Lightweight and easy to process: Plastic materials, compared to metals and other materials, offer lighter weight and better processing performance. This makes Aluminum Plastic Cream Caps lightweight overall while maintaining sufficient strength, facilitating consumer portability and usability. Additionally, plastic materials are easily processed into various shapes and sizes to meet different packaging design requirements for various brands and products. This flexibility makes Aluminum Plastic Cream Caps an ideal choice in the cosmetics packaging industry.
Cost-effectiveness: Plastic materials are relatively low-cost, providing Aluminum Plastic Cream Caps with a significant cost advantage. This cost-effectiveness is evident not only in raw material costs but also in processing costs and energy consumption during production. Compared to other materials such as metals, plastic materials have lower processing costs, higher production efficiency, and lower energy consumption. This ensures that Aluminum Plastic Cream Caps maintain high quality while offering excellent value for money, meeting market demands and consumer expectations.
In summary, the selection of PP material and other plastic materials for the inner cap of Aluminum Plastic Cream Caps is based on their excellent corrosion resistance, strong sealing properties, lightweight and easy processing characteristics, and cost-effectiveness. These advantages position Aluminum Plastic Cream Caps competitively in the cosmetics packaging industry, with promising application prospects and market competitiveness.