▁the ▁increasing ly ▁br isk ▁competition ▁could ▁be ▁counter ed . ▁The ▁group ' s ▁management ▁decided ▁that ▁the ▁Ober bru ch ▁site ▁should ▁pione er ▁this ▁modern ization , ▁since ▁it ▁had ▁gained ▁strateg ic ▁importance ▁with ▁the ▁text ile ▁poly ester ▁y arn ▁P ET . ▁With ▁an ▁annual ▁production ▁of ▁more ▁than ▁ 4 3 , 0 0 0 ▁tons ▁it ▁became ▁the ▁biggest ▁poly ester ▁fil ament ▁plant ▁of ▁the ▁Group . ▁In nov ative ▁spin ning ▁techniques ▁now ▁included ▁high - speed ▁m elt ▁spin ning ▁and ▁spin - st retch ing . ▁Ad van cing ▁poly ester ▁cond ens ation ▁was ▁another ▁target . ▁However , ▁the ▁oil ▁crisis ▁of ▁ 1 9 7 3 - 1 9 7 4 ▁dam aged ▁the ▁invest ment ▁program . ▁Only ▁ 4 ▁high - speed ▁m elt ▁spin ning ▁machines ▁were ▁installed . ▁ ▁Cris is ▁▁ ▁The ▁un pre ced ented ▁crisis ▁in ▁man - made ▁fi ber ▁production ▁shook ▁the ▁industry ▁in ▁the ▁mid ▁ 7 0 s . ▁Part - time ▁work , ▁down s izing , ▁limited ▁output , ▁invest ment ▁cut - back ▁and ▁rest ruct uring ▁were ▁the ▁consequences . ▁The ▁first ▁steps ▁towards ▁the ▁establishment ▁of ▁an ▁industrial ▁park ▁were ▁taken . ▁In ▁ 1 9 7 8 , ▁" Sp inner et ▁Center ▁Ober bru ch “ ▁changed ▁into ▁" En ka ▁tec nica “. ▁The ▁product ▁range ▁included ▁sp inner ets , ▁components ▁and ▁testing ▁equipment ▁for ▁the ▁man -