Based on your previous questions regarding the selection and volatile pollution detection of hot runner thread sealants, volatile pollution can be avoided throughout the entire process, from source to operation to end-of-life control:
I. Source Selection and Control
Select Low-VOC Products: Prioritize solvent-free anaerobic sealants, such as Loctite 565 and 567, which are low-VOC models, to reduce volatile release at the source.
Verify Product Parameters: Confirm that the product complies with RoHS and REACH environmental standards, and avoid cheap sealants containing high-boiling-point harmful additives.
II. On-Site Operation Management
Control the Application Amount: Accurately apply sealant according to thread specifications to avoid over-application and reduce the large-scale evaporation of excess sealant after heating.
Proper Surface Pretreatment: Clean the thread surface with isopropyl alcohol to prevent oil and impurities from mixing into the sealant layer and to prevent impurities from decomposing and generating additional volatiles when heated.
Enclosed Operation: Install localized gas collection hoods at the sealant application station to reduce the unorganized diffusion of volatiles in the workshop. III. End-of-pipe treatment guarantee
Supporting waste gas treatment: Collected volatile waste gases will be connected to activated carbon adsorption or catalytic combustion devices, and discharged only after meeting standards.
Standardized record management: Record the usage of rubber materials and waste gas operation and maintenance data in accordance with HJ 944 requirements, and retain the records for no less than 5 years.
