Milwaukee, WI – May 28, 2025 — Leader Paper Products, a fourth-generation, family-owned envelope manufacturer and printer based in Milwaukee, Wisconsin, is proud to announce its acquisition of Unique Envelope Corporation, a Chicago-based custom envelope manufacturer with a strong reputation for quality and craftsmanship. The acquisition marks a strategic move to strengthen Leader’s position in the envelope manufacturing industry and expand its reach into new market segments.
The integration of Unique Envelope’s operations into Leader’s business model ensures continued production excellence and enhanced customer support, while creating opportunities for expanded product offerings and increased efficiency.
“Leader’s acquisition of Unique Envelope strengthens our expertise while exposing a broader and more diverse customer base to Leader’s expanded operational capabilities and exceptional customer service,” said Steve Hipp, President and CEO of Leader Paper Products.
“Our acquisition of Unique Envelope is a celebration of shared values and a natural extension of our commitment to providing customers with top-tier products and responsive service,” said David Wilke, Chairman of Leader Paper Products. “This move not only strengthens our operational capabilities, but it also honors the legacy of two families who have dedicated their lives to paper and envelope craftsmanship.”
This acquisition underscores Leader’s ongoing investment in the future of envelope manufacturing. With facilities in Milwaukee, as well as distribution centers in Dallas, TX and Paulsboro, NJ, Leader Paper Products is well-positioned to support customers nationwide with reliable service and industry-leading solutions.
About Leader Paper Products:
Founded in 1901 by Gustave A. Wilke, Leader Paper Products has evolved over more than a century from designing machinery for paper converting to becoming a national leader in envelope manufacturing and printing. Now under the ownership and leadership of David Wilke, Chairman of the Board, and with active involvement from the fifth generation of the Wilke family, the company continues its long-standing tradition of innovation, customer service, and family values.
About Unique Envelope Corporation:
Unique Envelope Corporation, founded in 1966 by Melvin and Colette Kozbiel, shares similar roots in family ownership and dedication to craftsmanship. Under the leadership of their son, Darrell Kozbiel, the second-generation owner, Unique Envelope continued to build on its strong reputation for producing high-quality custom envelopes. For nearly six decades, the company has served a diverse client base from its Chicago facility, delivering exceptional craftsmanship and personalized service.
