Unwind with double photoelectric-eye tracking, unwind&rewind with double-armed turret type and auto tension controller Usage: This machine is suitable for any kind of plastic film, paper and Alu-foil. etc. reel material,two layers lamination or multi-layer lamination.Feature: 1.The first unwind adopts with EPC (Double photocell eyes).2.Double unwinders are both adopt with auto tension control ...