Filling and sub-packaging are both packaging processes for liquids, powders, and similar products, but they differ in purpose and container scale.
Filling operation: Filling transfers a product from a large container, such as a tank, drum, or barrel, into smaller containers like bottles, jars, or pouches. The main purpose is usually to make the product easier to carry, use, or handle. For example, soy sauce can be transferred from a barrel into multiple small bottles.
Sub-packaging operation: Sub-packaging divides a product into several portions, usually for sale or distribution. For example, a large bag of coffee can be divided into smaller retail bags for customers to purchase.
In short, filling generally takes a large unit and divides it into multiple smaller units. Sub-packaging usually takes a smaller unit and divides it further into even smaller portions. In practice, filling is often closer to bulk transfer, while sub-packaging is often closer to retail or allocation.
For equipment used in these processes, Hansheng Automation can machine custom filling nozzles, metering blocks, sealing jaws, and changeover fixtures from customer drawings in single pieces or small batches.
