Alpine Mold on Instagram: "🔥 Many people are asking — how do you design a stack mold? The real key lies in one word: flow balance! In a stack mold, achieving simultaneous and uniform filling for both upper and lower cavities all comes down to the hot runner layout and gating sequence. Only when each layer fills evenly can you truly boost production efficiency and minimize warpage or stress deformation. At @Alpine Mold, we combine professional Moldflow analysis and over 20 years of experience to

Alpine Mold on Instagram: "🔩 How Stack Mold Injection Molding Works Ever wondered how we double the productivity without doubling the machine size? Stack molds are designed with multiple parting lines — meaning two (or more) sets of cavities work in one shot. ✅ Why we use it: To produce high volumes efficiently while maintaining precision and part consistency. ⚙️ But it’s not for every project: When the part design requires complex side actions, or when cycle time must stay short, a stac

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