ProAmpac, backed by the Pritzker Group, has acquired PolyFirst Packaging. Pritzker purchased ProAmpac in 2016.

PolyFirst, founded in 1999 and located in Hartford, Wisconsin, makes plastic pouches, mailer bags, and rollstock. The company serves the food and beverage, healthcare and industrials sectors. Cincinnati-based ProAmpac produces a wide variety of packaging products, from can liners to cheese laminates to bank deposit bags.

Heirs to the Hyatt Hotels Corp. (NYSE: H) and Marmon Holdings Inc. fortune, the Pritzker brothers lead the Chicago-based Pritzker Group, which uses their long-term capital to acquire and operate middle-market North American companies. The firm also has a venture capital arm and an asset management unit.

In other packaging deals, Dade Paper & Bag Co.’s agreed to merge with Imperial Bag & Paper Co. LLC; Sabert Corp. is buying of Mullinix Packages Inc. from Mason Wells; and Sonoco (NYSE: SON) has reached a deal to purchase Clear Lam Packaging Inc.