Below are hot runner solution for normal problems  for you.

Single nozzle in the nozzle head rupture after [the solution]

The depth of the radius error or too deep

Injection molding machine nozzle disalignment

Injection molding machine nozzle power is too high and too fast

Gate drops, salivate or drawing [the solution]

Hot runner temperature is too high

The gate is too big

The mould in cycle time too warm

The lack of relief

The nozzle head too little contact (gate too hot)

If the CRB or contents gate (direct gate) change for STB or SRX gate (torpedo head)

The nozzle head front-end infarction [the solution]

Mold cooling temperature is too low

Nozzle head contact is too little

Check the gate, convert without inserts

Gate mark too long (ST/CT) [the solution]

The normal STB/STT STX length is about 50% of the gate diameter

Normal CTB/CTT/CTX length is about 100% of the gate diameter

Recommand too short (wear and tear, damage)

The stretched XS is not moved to the central A/L length

Gate processing substandard

Mould processing substandard

Any hot runner problems please contact me freely ,I will provide you best hot runner solution!