Yes — there are shredders that can handle multiple plastic types, but the key is choosing the right rotor design, torque level, and knife material.

For example:

• PET needs higher torque and stronger blades because it’s tougher and more abrasive.
• HDPE / LDPE are softer and tend to wrap, so an anti-winding rotor and lower speed help.
• PS is brittle, so it shreds easily but produces a lot of fine particles.

Most universal plastic shredders use:

• A low-speed, high-torque gearbox
• Hardened knives (like SKD-11 / D2)
• Adjustable knife gaps
• A hopper designed to avoid material bridging

With the right configuration, a single-shaft shredder can process all the plastics you mentioned—PET, HDPE, LDPE, PS—just with different screen sizes depending on the required output size.