Sun On Plastic Moulding Limited
| Payment Terms | T/T |
| Supply Ability | More than 1 million |
| Delivery Time | 30day |
| Packaging Details | As the customer required |
| Emphasize | Cause And Countermeasure Analysis Of Product Black Spot |
| Place of Origin | CHINA |
| Brand Name | OEM |
| Certification | ISO |
View Detail Information
Explore similar products
OEM Injection Molding Solution Regular Daily Maintenance
Plastic Manufacturing Made Easy with Smooth Surface Finish Injection Molding
Achieve Optimal Mold Temperature with Injection Molding Solution
Smooth Surface Finish Injection Molding System with Short Lead Time
Product Specification
| Payment Terms | T/T | Supply Ability | More than 1 million |
| Delivery Time | 30day | Packaging Details | As the customer required |
| Emphasize | Cause And Countermeasure Analysis Of Product Black Spot | Place of Origin | CHINA |
| Brand Name | OEM | Certification | ISO |
| High Light | Black Spot injection moulding problems and solutions ，Black Spot Injection Moulding solutions ，OEM injection moulding problems and solutions | ||
Black Spot
Dark spots include black spots and black stripes. Black spots are when the product has the correct color fading but occasionally black or dark spots are visible; Black stripes are strips of different colors. This is usually due to material decomposition. Screw cleaning is not clean. It's caused by impurities in the material.
| Cause | Cuntermeasure | |
| Forming condition |
1. The material of injection molding machine is not clean 2. High temperature of the material will cause material degradation 3. Excessive injection pressure will increase the shear and decompose the material 4. Excessive shear caused by excessive injection molding speed 5. The thermal pause time of materials is too long |
1. Clean the material and screw with cleaning machine material, pull out screw when necessary to clean 2. Reduce the forming temperature 3. Reduce injection pressure and screw speed 4. Reduce injection speed 5. Reduce buffer margin and replace small machine so that the delay time is less than the retention time required by the material |
| Die |
1. Impurities are produced in the nozzle or hot runner 2. There is oil in the mold 3. Hot runner is not cleaned |
1. Clean the nozzle or hot runner 2. Clean the mold 3. Clean hot runner
|
| Material | The raw material itself has impurities and black spots |
Change of material
|
| Other | The hopper is not cleaned | Re-clean the hopper |
Company Details
Business Type:
Manufacturer
Year Established:
1997
Total Annual:
18000000-22000000
Employee Number:
1~1000
Ecer Certification：
Site Member
Sun On was founded in 1997. After years of development, we gradually bloomed into a diversified manufacturing factory, with Product Design, Rapid Prototype, Molds Making, Plastic Injection Production, Die Casting Alloy Production and Precision Parts Machining. together with surface fini... Sun On was founded in 1997. After years of development, we gradually bloomed into a diversified manufacturing factory, with Product Design, Rapid Prototype, Molds Making, Plastic Injection Production, Die Casting Alloy Production and Precision Parts Machining. together with surface fini...
Get in touch with us
Leave a Message, we will call you back quickly!