Drawing System

So far, we have tried to form very fine dot arrays on Si substrate for quantum devices and optical and magnetic recording media [3-7] since Hosaka et al. introduced the EB drawing system comprised of a field-emission... 

Despite the simplicity of the metric, it may be subject to ambiguity depending on how waste is defined and where one draws system boundaries for any given... 

Figure 9.36 Side-draw system with +20% changes in the impurity flowrate (side stream flowrate is set at 50 kg/h).

The advantages of automated drawing systems are significant. The drafting effon is radically reduced or entirely eliminated in terms of design staff hours and graphics terminal time. Engineering cost reduaions are substantial, and valuable schedule time is saved. 

Improved accuracy—Because of automated tasks rind electronic data exchange between design, modeling, and drawing systems. 

Drawing System Orientation of the fiber - Five rollers - Adjustable take up rate, e.g., 12 m/min... 

The other approach is to use a closed slot draw system. The best example of this is in Reifenhauser lines. In this approach the system is essentially sealed or closed from the spinneret to the laydown table. Flow through the slot comes from the quench above and the low pressure created by the vacuum box below the belt. This system generally results in fabrics with excellent uniformity once the air flows are balanced correctly. However, the filament velocities that can be obtained are much less than with the open system. 

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