Email:sales03@tzyuno.comTaizhou Huangyan YUNO Mould Factory

Taizhou Huangyan YUNO Mould Factory

Product Categories
Contact Us

Contact:Mrs. Young yang 
Mobile: 0086-18267666869
Tel: 0086-576-84055252
E-mail: sales03@tzyuno.com     18267666869@163.com   
Add: NO.28 Zhuling Northindustry , Huangyan, Taizhou city ,Zhejiang,China
Fax: 0086-576-84111565

Common Defects of PET Preforms in Hot Runner Injection Molding (4)

Common Defects of PET Preforms in Hot Runner Injection Molding (4)

Defect 9: The bottle embryo mouth is not full or there is no dissolution pattern
    The cause of the defect:
                           1. Poor exhaust
                           2. Injection eccentricity
    Defects processing method:
                           1. Increase the exhaust slot
                           2. Clean lip mold
                           3. Reduce the injection speed
                           4. Correct mold bottom mold hole

Defect 10: preform edge thick edge
    The cause of the defect:
                          1. Poor mold manufacturing
                          2. Gate hole deviation
                          3. Injection pressure is too high
                          4. Core shift
    Defects processing method:
                          1. Fix the mold
                          2. Increase material temperature
                          3. Reduce pressure
                          4. High-intensity, high-precision and core adjustable knots
Molds

Defect 11: Concave surface depression
    The cause of the defect:
                           1. Material temperature is too high
                           2. The injection speed is too short
                           3. Pressure is too short
                           4. Injection time is too short
                           5. Insufficient cooling
    Defects processing method:
                          1. Reduce material temperature
                          2. Reduce the injection speed
                          3. Increase pressure
                          4. Increase injection time
                          5. Increase water pressure


Copyright © Taizhou Huangyan YUNO Mould Factory
QR Code
[[Html_Custom]]