By Jason Lea, Plastics News Newtown Square, Pennsylvania-Graham Partners Inc. is continuing its purchasing spree, buying Line-X Franchise Development Corp. of Santa Ana, Califirnia. Line-X manufactures a polyurethane/polyurea hybrid used as a spray-on truck-bed lining. The liquid solidifies quickly on contact with air. Line-X chief executive officer Scott Jewett said by phone that Graham has resources that Line-X needs to grow.Graham spokesman Joe May added: We invest in businesses that are benefiting from a fundamental shift. There has been a conversion from drop-in bed liners to spray-on bed liners."Terms of the purchase were not disclosed. Graham announced the deal 22 Aug.Graham, based in Newtown Square, has a history of investing in plastics processors. It also owns Nailite International Inc. of Miami, Supreme Corq Inc. of Kent, Washington, and National Diversified Sales Inc. of Woodland Hills, Califorinia"