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OEM Black Spot Injection Moulding Problems And Solutions
OEM Black Spot Injection Moulding Problems And Solutions
Specifications
MOQ :
100pcs
Price :
Negotiable
Payment Terms :
T/T
Supply Ability :
More than 1 million
Delivery Time :
30day
Packaging Details :
As the customer required
Place of Origin :
CHINA
Brand Name :
OEM
Certification :
ISO
Emphasize :
Cause And Countermeasure Analysis Of Product Black Spot
Description

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
Product tags

defects of injection moulding

,

injection moulding defects

,

2k injection moulding
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OEM Black Spot Injection Moulding Problems And Solutions

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Product Detail
MOQ :
100pcs
Price :
Negotiable
Payment Terms :
T/T
Supply Ability :
More than 1 million
Delivery Time :
30day
Packaging Details :
As the customer required
Contact Supplier
OEM Black Spot Injection Moulding Problems And Solutions

Sun On Plastic Moulding Limited

Site Member
3 Years
guangdong, dongguan
Since 1997
Business Type :
Manufacturer
Main Products :
Injection Molded Parts, Plastic Molded Parts, Precision Injection Molding
Total Annual :
18000000-22000000
Employee Number :
1~1000
Certification Level :
Site Member
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