Customized GF nylon compounds (PA6, PA66, PA12)

What is Reinforced Nylon Stringing?

Stringing (or "webbing") refers to thin, unwanted GF nylon strands left on molded parts—common in glass fiber reinforced nylon (GF nylon) components like automotive fluid lines or electrical enclosures. These strands ruin part aesthetics and functionality, often traced to processing issues.

Core Causes of Nylon Stringing (Beyond Temperature)

1. Nozzle Temperature ImbalanceOverheated nozzles keep GF nylon molten during mold opening, creating residual strands (your initial observation is spot-on!) .

2. Inadequate Material DryingMoisture in reinforced nylon causes uneven melting, worsening stringing (critical for FDA-compliant applications).

3. Nozzle Design FlawsPoorly sealed nozzles fail to cut molten nylon cleanly during mold ejection.

4. 

5 Actionable Solutions (Proven by Chi Mei’s Expertise)

As a Chi Mei Industrial joint venture (partner of China’s largest plastic production base ), we’ve resolved 1000+ nylon processing issues:

✅ Lower Nozzle TemperatureReduce by 10-20°C (e.g., 250°C → 235°C for PA66 GF30).

✅ Speed Up Mold OpeningIncrease to 80-100mm/s to break residual strands.

✅ Optimize Material DryingDry at 80°C for 4-6 hours (critical for moisture-sensitive nylon).

✅ Upgrade Nozzle SealInstall a shut-off nozzle to cut molten flow cleanly.

✅ Adjust Injection PressureReduce holding pressure by 10% to minimize overflow.

Why Trust Zhongxin Huamei ?

Founded in 1997 as a Chi Mei joint venture, we specialize in:

•  Customized GF nylon compounds (PA6, PA66, PA12)

•  Molding support for automotive/electronic parts

• 29 years of solving nylon processing defects

Ready to Fix Stringing?

Our technical team (backed by Chi Mei’s R&D) offers free molding audits.

Contact us for tailored reinforced nylon solutions!