Material Drying
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Improper production environment control during low density polyethylene low density polyethylene processing
Problem Phenomenon
Large workshop temperature and humidity changes cause product quality fluctuations, especially obvious differences in product dimensions and appearance between day and night.
Improper environment control affects process stability and product consistency.
Cause Analysis
(1) Ambient temperature changes affect mold cooling effect and product shrinkage rate
(2) High ambient humidity causes raw material moisture absorption
(3) Workshop not equipped with air conditioning or poor air conditioning effect
(4) Morning-evening temperature difference affects cooling water temperature
(5) Airflow (such as door opening and closing) affects blown film frost line stability
Solution
(1) Install air conditioning system in production workshop, control temperature 20-25°C, humidity ≤60%
(2) Install constant temperature device on the cooling system, ensure stable cooling water temperature
(3) Zone temperature control for injection and extrusion workshops
(4) Install wind shields in the film blowing workshop to isolate external airflow
(5) Establish an environmental parameter recording system, adjust process parameters in time
Key Takeaway
Production environment is an important factor affecting processing quality; a complete environment control system needs to be established.
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