RTR (Reel to Reel) continuous tape
In the 1980s, a small number of large FPC flexible circuit board manufacturers in the world began to build RTR production lines. Due to the immature process technology used at the time, the yield of FPC products produced on the RTR production line was very low. In the late 1990s, due to the expansion of the TAB and COF markets and the initial maturity of RTR technology, in the production of TAB and COF FPC, the superiority of this continuous production of FPC equipment and processes began to be realized. By the beginning of the 21st century, the technological development of RPC production of FPC has been relatively mature.
The advantage of RTR: no need for the operator to attach the FPC to the fixture and other related work processes. Avoid FPC creases and scratches. If the post-process make products with high requirements for dust-free environment such as FOG and NCP, it can avoid the pollution of personnel and the environment. Simplify packaging, shipping and working conditions. It can meet the process requirements of ultra-thin, high-end FPC COF.
Disadvantages of RTR: The degree of specialization of production line equipment is high, and the range of applicable products is narrow. RTR production equipment is expensive to invest. Suitable for ultra-large quantities of FPC production. Not suitable for production mode of multiple varieties and small batches.