Packaging machinery can be broadly divided into two categories:
1. Machines used to process packaging materials and packaging containers;
2. Machines used to complete the packaging process. The discussion here is limited to the latter, that is, the machine that completes the packaging process is called a packaging machine. The definition of packaging machine in the national standard is: “A machine that completes all or part of the packaging process. The packaging process includes the main packaging processes such as filling, wrapping, and sealing, as well as related front and back processes such as cleaning, stacking and disassembly. In addition, it also includes auxiliary equipment such as stamping and metering.”
Based on this, packaging machines can be divided into 8 categories: 1. Wrapping machine, 2. Filling machine, 3. Sealing machine, 4. Labeling machine, 5. Multifunctional packaging machine, 6. Cleaning, drying, and sterilizing machine, 7. Container machine, 8. Packaging auxiliary mechanical equipment.
Wrapping machine
The machine that wraps products with flexible packaging materials is called a wrapping machine. According to the different wrapping methods, it can be divided into: ① folding wrapping machine, ② twist wrapping machine, ② seam wrapping machine, ① covering wrapping machine, ⑥ winding wrapping machine, ⑧ stretch wrapping machine, ⑦ body wrapping machine, ⑧ shrink wrapping machine, etc. The figure shows the wrapping method of the wrapping machine.

Filling machine
The machine that quantitatively fills the packaging material into the packaging container is called a filler. According to the quantitative and filling methods, it can be divided into: 1. Volumetric filler, 2. Weighing filler, 3. Counting filler, 4. Filling machine, 5. Gravity filler, 6. Push-in filler, 7. Pick-and-place filler, etc.
The figure shows the metering and filling methods of the filler
Sealing machine
The machine that seals the opening of the packaging container is called a sealing machine. According to the different sealing methods, it can be divided into: 1. Hot pressing sealing machine, 2. Welding sealing machine, 3. Embossed sealing machine, 4. Folding sealing machine, 5. Insertion sealing machine, 6. Rolling sealing machine, 7. Crimping sealing machine, 8. Pressing sealing machine, 9. Screw-on sealing machine, 10. Tie-off sealing machine, 11. Tape sealing machine, 12. Suture sealing machine, etc.; the figure is a schematic diagram of the sealing method of the sealing machine.

Labeling machine
The machine that attaches or inserts labels on the product is called a labeling machine. According to the different ways of fixing labels, it can be divided into: 1. Labeling machine, 2. Shrink labeling machine, 3. Hanging labeling machine, 4. Nailing labeling machine, 5. Inserting labeling machine, etc. The figure is a schematic diagram of the labeling machine’s fixed labeling method;
Other packaging machinery
Other refers to packaging machines other than the first four types:
Multifunctional packaging machine
The machine that can complete more than two packaging processes is called a multifunctional packaging machine. Generally, they are named after the packaging process they can complete. The main ones are: 1. Filling and sealing machine, 2. Forming-filling-sealing machine (to shape packaging materials), 3. Forming-filling-sealing machine (to shape prefabricated packaging containers), 4. Vacuum packaging machine (filling-vacuuming-sealing); 5. Inflatable packaging machine (filling-inflating-sealing), 6. Wrapping and labeling machine, etc.

Cleaning, sterilizing and drying machine
Machines that clean, sterilize and dry packaging containers before packaging or packaged products after packaging are called cleaning machines, sterilizing machines and drying machines. For example, bottle washing machines, can washing machines, spray sterilizing machines, steam sterilizing machines, ultraviolet sterilizing machines, hot air dryers, infrared dryers, etc. commonly used in light industry belong to this category of machines. If the machine has multiple functions, it can be named by combining its functions, such as cleaning-drying machine, sterilizing-drying machine, cleaning-sterilizing-drying machine
Containerizer
A machine that packs several unit packages together is called a containerizer. It can be named according to its containerization method, such as: 1. strapping machine, 2. tying machine, 3. compression baler, 4. packing machine, etc.
Packaging auxiliary machinery and equipment
Any machinery and equipment that cannot be included in the above 7 items but is necessary to complete the packaging process can be called packaging auxiliary machinery and equipment. For example, conveying devices, stacking tables, metering machines; box openers, glue applicators, printers, inspection machines, etc.
In addition to the classification of packaging machines mainly based on the packaging function of the machine as mentioned above, sometimes they can be further classified according to the degree of automation or scope of use.
For example, a machine that uses manual feeding of packaging materials or removal of packaged products but can automatically complete other packaging operations can be called a semi-automatic packaging machine; a machine that automatically completes feeding, packaging and finished product output is called an automatic packaging machine.
A packaging machine that can only package products of a certain shape, specification and size is called a special packaging machine; a packaging machine that can package products of two or more different shapes, specifications and sizes is called a multi-purpose packaging machine; a packaging machine that can package products of any shape, specification and size within a certain range is called a general packaging machine.
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