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oh, now i read the thing right...this might be a pin down issue..timing i should say....
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well, the key in this whole blow moulding thing is heat, pin down activity. and this is from practical...trial and error...more err than success.
play around with heat and you will be good.
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we are fasing problem with sidel sbo 8 universal stretch crack fail 500 ml blue colore bottels
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1-reduce preform temperature ,2-reduce stretching pressure , 3-reduce preform endcap temp.,4-increase preblow pressure/flow respectively
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I am facing problem with 20 lit PET jar .While bi axial orientation it is observed that fold at bottom pl reply
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Check neck cooling condition while heating.
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in 1.5litre mold in vs600m/c. the position of bottle under neck position after blowing bottle became bends.
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