Here is a general overview of how garbage bags are made:

1. Raw materials: The first step in the manufacturing process is to gather the raw materials needed to make the garbage bags. This may include plastic, paper, or biodegradable materials, depending on the type of bag being produced.

2. Extrusion: The raw materials are then fed into an extrusion machine, which melts and mixes them together to create a continuous sheet or film. This process may also involve adding pigments or other additives to give the garbage bags their desired color or properties.

3. Cutting and sealing: The continuous sheet or film is then cut into the desired size and shape using a die or cutting machine. The edges are then sealed to create a strong and leak-proof bag.

4. Printing and labeling: Many garbage bags are printed with branding or other information, such as recycling symbols or capacity. This is typically done using a printing machine that applies the desired design to the bags.

5. Packaging: The finished garbage bags are then packaged in boxes or rolls for distribution and sale.

Overall, the manufacturing process for garbage bags involves a series of steps to create the desired product using raw materials, machinery, and printing and packaging equipment.