A telescopic core in injection molding (IM) is a multi-stage, sliding core system used to mold deep internal features that cannot be ejected with a single straight core. A telescopic core is used when: The part has a very deep hole There are internal undercuts A normal core would lock the part and prevent ejection How it works Mold closes → telescopic core extends fully Plastic is injected around the core Mold opens Core retracts in stages (one section at a time) Part is safely ejected Typical a
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A telescopic core in injection molding (IM) is a multi-stage, sliding core system used to mold deep internal features that cannot be ejected with a single straight core. A telescopic core is used when: The part has a very deep hole There are internal undercuts A normal core would lock the part and prevent ejection How it works Mold closes → telescopic core extends fully Plastic is injected around the core Mold opens Core retracts in stages (one section at a time) Part is safely ejected Typical a
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Silicone Injection Molding Company | Custom Molding
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A telescopic core is a critical mold component designed to form undercuts, deep cavities, and complex internal features. Through precise extension and retraction during the molding cycle, the telescopic core ensures smooth demolding while maintaining dimensional accuracy and part integrity. Manufactured with high-precision machining and tight tolerances, a well-designed telescopic core delivers stable movement, excellent wear resistance, and reliable performance in long-term production. High-qua
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A telescopic core is a critical mold component designed to form undercuts, deep cavities, and complex internal features. Through precise extension and retraction during the molding cycle, the telescopic core ensures smooth demolding while maintaining dimensional accuracy and part integrity. Manufactured with high-precision machining and tight tolerances, a well-designed telescopic core delivers stable movement, excellent wear resistance, and reliable performance in long-term production. High-qua
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