- Issue: Black spots or specs are small, dark discolorations that appear on the surface of the bottle. They are often caused by contaminants in the material or mold, compromising the appearance of the product.
- Possible Causes:
- Contamination in the resin or raw material.
- Air pockets or foreign particles in the material.
- Mold wear and tear.
- Troubleshooting Steps:
- Inspect resins for impurities or contaminants.
- Examine molds for any debris or wear.
- Check the material handling process to ensure cleanliness.
- Solutions:
- Use high-quality, clean resin that has been tested for impurities.
- Clean the molds regularly to remove buildup and contamination.
- Introduce filtration systems to prevent foreign particles from entering the material.
- Preventive Measures:
- Source materials from trusted suppliers with strict quality control measures.
- Perform frequent checks on molds and material storage areas for cleanliness.
