1. Raw Materials: Bendy straws are made from a thermoplastic material called polypropylene. This material is known for its flexibility and resistance to cracking, making it ideal for straws that need to bend without breaking.

2. Extrusion: The polypropylene resin is melted and forced through a circular die to create a continuous tube of plastic. This tube is then cooled to solidify the material.

3. Corrugation: The plastic tube is then passed through a series of rollers that have a corrugated pattern. These rollers press the tube, creating the characteristic bends or corrugations in the straw.

4. Cutting: The corrugated tube is cut into individual straws using a rotating blade or saw. The cutting process ensures that each straw has a consistent length and clean edges.

5. End Shaping: The ends of the straws are then shaped using a heated mold. This process creates the flared or rounded ends that make it easier to drink from the straws.

6. Packaging: The bendy straws are inspected for quality and packaged into bundles or boxes for distribution and sale.

7. Color and Additives: Bendy straws can be produced in various colors by adding pigments to the molten plastic during the extrusion process. Some manufacturers also add flavorings or other additives to enhance the straws' appeal.

8. Biodegradable Options: In recent years, there has been a growing trend towards biodegradable bendy straws. These straws are made from plant-based materials, such as cornstarch or sugarcane, and are designed to break down more quickly in the environment.

Overall, the production of bendy straws involves a combination of extrusion, corrugation, cutting, shaping, and packaging processes to create the unique and flexible straws we use for drinking from cold beverages.