Possible Clues:

• Packaging material — telephony (anag)
• Plastic switch needed for telephony
• Rogue openly wrapping article in packaging material
• Synthetic thermoplastic used for packaging, etc
• Neophyte beginning to learn about plastic
• The pylon collapsed, containing ultimately unreliable plastic
• Synthetic 6 Dn
• Material from college article has bearing
• Strange telephony provides a lightweight material, used in packaging
• A lightweight thermoplastic