The Chicago-based company, which turned over nearly $800m last year, bought the Bradford packaging company as part of an ongoing strategy to expand its business portfolio and reach throughout Europe and the UK.
Under the new arrangement, PPS, which provides high-end packaging for global clients including Harrods, Boots, Bollinger, Bacardi and Thorntons, will continue to operate in its current form but will be brought under the InnerWorkings umbrella.
The US firm made its first foray into the UK in May 2008 when it acquired Solihull-based print management and marketing firm Etrinsic.
The 100-staff company, which posted reveues of $44m in 2007, rebranded as InnerWorkings UK and went on to acquire online merchandise supplier Merchandise Mania in September last year. In 2011, before becoming part of InnerWorkings, the 34-staff firm posted an annual turnover of more than £6m.
The latest acquisition is the company’s first move into the packaging manufacturing in the UK.
PPS managing director Simon Bell said: "We are excited to join forces with InnerWorkings. I have no doubt that both companies will benefit greatly from each other’s expertise, global contacts and worldwide manufacturing network.
"Although we will be operating under the InnerWorkings banner, I can assure clients it will be business as usual."
"PPS has a strong reputation for creating luxury packaging solutions," said InnerWorkings UK managing director Simon Dipple. "We look forward to integrating them into the InnerWorkings family."