By Cavity Count
Single-cavity molds: Suitable for small-batch production or special specifications
Multi-cavity molds: Common configurations include 8, 16, and 32 cavities; suitable for mass production
Ultra-high-cavity molds: 48, 64, or more cavities; used for ultra-high-speed production lines
By Preform Shape
Round preform molds: Common type; suitable for beverage bottles, etc.
Non-round preform molds: Used for specially shaped packaging, such as square or oval bottles
Wide-mouth preform molds: Used for large-aperture packaging, such as shampoo bottles
By Material
Standard PET preform molds
Biodegradable material preform molds
High-temperature resistant material preform molds (for hot-fill products)