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Materials (Basel). 2017 May 29;10(6). pii: E594. doi: 10.3390/ma10060594.

Rapid Prototyping of Slot Die Devices for Roll to Roll Production of EL Fibers.

Author information

1
Electrical and Computer Engineering Department, Drexel University, Philadelphia, PA 19130, USA. alyssa.a.bellingham@gmail.com.
2
Electrical and Computer Engineering Department, Drexel University, Philadelphia, PA 19130, USA. nicholasbromhead@gmail.com.
3
Electrical and Computer Engineering Department, Drexel University, Philadelphia, PA 19130, USA. fontecchio@coe.drexel.edu.

Abstract

There is a growing interest in fibers supporting optoelectrical properties for textile and wearable display applications. Solution-processed electroluminescent (EL) material systems can be continuously deposited onto fiber or yarn substrates in a roll-to-roll process, making it easy to scale manufacturing. It is important to have precise control over layer deposition to achieve uniform and reliable light emission from these EL fibers. Slot-die coating offers this control and increases the rate of EL fiber production. Here, we report a highly adaptable, cost-effective 3D printing model for developing slot dies used in automatic coating systems. The resulting slot-die coating system enables rapid, reliable production of alternating current powder-based EL (ACPEL) fibers and can be adapted for many material systems. The benefits of this system over dip-coating for roll-to-roll production of EL fibers are demonstrated in this work.

KEYWORDS:

3D-printing; electroluminescent; light-emitting fibers; rapid prototyping; roll-to-roll process

Conflict of interest statement

The authors declare no conflict of interest. The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.

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