Unwinder device for reels of web-like material with temporary accumulator members for the material unwound in the phase of reel substitution and relative method

摘要

The unwinder device comprises: unwinding members for simultaneously unwinding a first reel (B 1 ) and a second reel (B 2 ), a splicing device ( 151 ) for splicing together a first web-like material (N 1 ) coming from said first reel (B 1 ) and a second web-like material (N 2 ) coming from said second reel (B 2 ), an accumulator member ( 24, 200 ) for accumulating web-like material (N 2 ) supplied from said second reel (B 2 ) before splicing to the web-like material (N 1 ) supplied from said first reel (B 1 ).