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Key Points of PVC Foam Board ProcessThe foam pvc mouldings are divided into three processes: the formation of the bubble nucleus, the expansion of the cell nuclei, and the curing of the foam. For PVC foam eet, adding a chemical foaming agent, the expansion of the bubble nucleus has a decisive influence on the quality of the expanded eet. PVC is a straight-chain molecules, the molecular chain is ort, low lt strength in the process of cell nuclei inflated into a bubble, the lt is insufficient to coat the bubbles, the gas easily overflow into large bubbles, and to reduce the foam eet of product quality . The key ftor in improving the quality of PVC foam eet is to improve the lt strength of the PVC. From the processing charteristics of polyr materials, PVC lt strength in a variety of ways Jameis Winston Big Tall Jersey , but the most effective way is added to improve the lt strength additives and lower processing temperatures. 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