It is used for production of tight buffer with 0.6mm or 0.9mm outer diameter. Special small-size extruder and self-centering extrusion head are used. The product’s outer diameter is even. The concentricity is high. Driven fiber pay-off. The tension is constant. The addition loss is small. Single wheel wrapped belt capstan. The belt is tightened pneumatically. The haul-off strength can reach 100N.Automatic dual wheel take-up is used. It runs very stability and reliably.The vacuum system is imported, which effectively controls the stripping features of tight buffer.