Winkler+Dünnebier (W+D) - 3900

The Winkler+Dünnebier (W+D) Model 3900 is a high-performance envelope production machine designed for efficient and precise manufacturing of envelopes. Part of the renowned W+D 3900 series, this machine is engineered to deliver exceptional productivity with 3/1 printing capabilities, making it ideal for producing high-quality envelopes with consistent accuracy. Key features include ductor blade units for precise ink application, a magnetic flexible die window section for versatile envelope designs, and a two-roll splicing back stand for uninterrupted operation. Equipped with Valco gumming systems and verification, the Model 3900 ensures reliable adhesion and quality control. With a production speed ranging from 550 to 600 envelopes per minute, this machine is well-suited for medium to large-scale envelope manufacturing, particularly for Kerns-style envelopes. Its robust construction and comprehensive spare parts tooling support multiple size cut-offs, enhancing operational flexibility and longevity.