Matrix

Orfa Corp. said yesterday that the start-up date for its trash-recycling plant in Southwest Philadelphia has been delayed from September to "on or before Jan. 31, 1988. " At the same time, the Cherry Hill company said it had obtained $7.2 million, enough to finance the company through the end of 1988. It also said it had signed a cooperative agreement with Research-Cottrell Inc., which is building and financing the Philadelphia plant, under which the two companies intend to construct additional plants.