Complete History

1930– Daramic established as Dewey & Almy Corporation, USA and develops rubber separator

1954– W.R. Grace & Co. acquires Dewey & Almy Corporation

1969/1972– Polyethylene (PE) separator is invented in Owensboro plant, KY, USA and this plant becomes the first location to manufacture PE separators in Daramic

1980/1981– Manufacturing established in Norderstedt, Germany and Selestat, France. Daramic starts operation footprint in Europe

1994– InterTech Group Acquires W.R. Grace battery separator business

1997– PIL and DAGA – Potenza, Italy is acquired

2000– Established footprint in Asia with opening of manufacturing plant in Prachinburi, Thailand

2004– Warburg Pincus acquires the Polypore Group from the InterTech Group

2006 Prachinburi, Thailand Line 2 & 3 is in operation

2006– Daramic expands into China by forming a joint venture

2007– Daramic acquires plant in Tianjin, China

2008– Bangalore, India plant is established through acquisition

2008– Prachinburi, Thailand Line 4 is in operation

2011– Xiangyang, China plant is established

2011– Daramic India relocated to a new and larger facility in Bangalore, India

2012– Line 5 at Prachinburi, Thailand is complete and operational

2015– Asahi Kasei acquires Polypore International, LP, the parent company to Daramic and affiliates

2017– Greenfield plant in Gujarat, India is complete and operational

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