Q12: Why is there a slight variance in how the cap fits the bottle/collar? | Innovative Skincare & Cosmetic Packaging - COSJAR

Aluminum and plastic react oppositely to temperature (aluminum expands with heat, while plastic contracts), making slight physical variances inevitable. Furthermore, multi-cavity molds (e.g., 8-cavity caps) and aluminum stamping points carry micro-tolerances.• Our Fitment Standard: The bottle is filled with water; when lifted solely by holding the cap, the assembly must hold firmly together without detaching. Leveraging cutting-edge technology, COSJAR offers advanced solutions in beauty packaging. Our state-of-the-art manufacturing processes ensure precise, high-quality acrylic packaging that aligns with modern cosmetic and skincare trends. As a leader in packaging solutions, we specialize in producing high-quality plastic and cosmetic packaging products tailored for the global b2b market. Our range includes Plastic Bottles, Cosmetic Packaging, Skin Care Packaging, Beauty Packaging, and Acrylic Packaging. We strive to meet the evolving needs of beauty and healthcare industries worldwide, ensuring top-tier product quality and innovative design.