Injection Molding
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High residual monomer content in PET '2079851475616104452
Problem Phenomenon
The residual ethylene glycol and terephthalic acid monomer content in PET products is on the high side, affecting food contact safety.
Cause Analysis
The raw material itself has high residual monomer content and SSP is insufficient; processing temperature is on the low side and low-molecular substances are not fully volatilized.
Solution
Select PET raw materials with low residual monomers; appropriately increase processing temperature and venting effect; use a vacuum-vented '2079851475616104452 machine.
Key Takeaway
PET residual monomer control starts from two aspects: raw material selection and processing technology.
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