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Exploring the Benefits of Expanded PVC Board with Boyu Extruder

In the realm of versatile materials for various applications, expanded PVC board reigns supreme. Among the many manufacturers in the market, Boyu Extruder stands out as a reliable provider of high-quality expanded PVC foam board. Let’s delve deeper into the characteristics and advantages of this exceptional material.

Understanding the Role of Calcium Carbonate

Calcium carbonate plays a crucial role in enhancing the properties of expanded PVC board. When the particle size of calcium carbonate aligns with the foaming agent, it acts as a nucleating agent, positively impacting the foaming process. Optimal particle size, typically less than 5┬Ám, ensures effective nucleation without agglomeration, contributing to the formation of a robust foam structure.

Importance of Proper Calcium Carbonate Addition

The addition of calcium carbonate significantly influences the foaming quality of expanded PVC board. Boyu Extruder recommends a filling amount ranging from 10% to 20% to achieve the desired foaming ratio. Insufficient addition results in a low foaming ratio, while excessive amounts lead to bubble breakage and reduced foaming efficiency.

Ensuring Calcium Carbonate Dispersion

Uniform dispersion of calcium carbonate within the resin matrix is essential for optimal foaming performance. Boyu Extruder employs surface treatment methods to ensure even distribution and prevent agglomeration. Complete surface treatment alters the hydrophilic nature of calcium carbonate, preventing interference with the foaming process and promoting uniform foaming throughout the material.

Managing Water Content

Controlling the water content of calcium carbonate is crucial for maintaining the integrity of expanded PVC board. Boyu Extruder recommends a water content below 0.5% to prevent adverse effects on foaming molding.


By selecting the appropriate 3000 mesh calcium carbonate and carefully controlling the filling amount within the recommended range, Boyu Extruder ensures uniform dispersion and superior foaming quality in expanded PVC board production. With proper utilization of calcium carbonate, Boyu Extruder enhances the overall quality and performance of expanded PVC foam board, meeting the diverse needs of various applications. Trust Boyu Extruder for premium expanded PVC solutions that exceed expectations.

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