In the production of PVC door and window profiles, the proper use of stabilizers directly affects product quality. Below are the key adjustment points:

Selection and Dosage of Stabilizers
It is recommended to use environmentally friendly calcium-zinc stabilizers, with the dosage controlled at 3.5–4.5 parts (per 100 parts of resin). During summer production, the dosage can be appropriately increased by 0.2–0.3 parts to counteract the effects of high temperatures.

Processing Temperature Control
Maintain the processing temperature within the range of 180–190°C. Excessively high temperatures can cause material decomposition, while excessively low temperatures can affect plasticization. The use of an automatic temperature control system is recommended to ensure temperature stability.

Formulation Coordination
Stabilizers need to be used in coordination with other additives:

• Use an appropriate amount of lubricant to ensure smooth material flow

• Add UV absorbers to enhance outdoor weather resistance

• Incorporate processing aids to improve plasticization

Production Process Monitoring
Regular checks are advised:

• Ensure the surface of the profiles is smooth

• Check for uniform color

• Verify dimensional stability

By properly adjusting stabilizers, profiles can achieve good mechanical strength and weather resistance while improving production efficiency and reducing costs. It is recommended that manufacturers maintain comprehensive quality records and continuously optimize formulation processes.

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