SUNG I INDUSTRY CORP. stands at the forefront of precision molding, offering deep expertise in high-performance Plastic Injection Mold engineering with a focus on complex threading applications. By utilizing top-grade Plastic Mould Steel, the company ensures longevity and reliability in every tooling project, particularly for intricate
Plastic Injection Internal Thread Mold designs that require exceptional accuracy and zero thread deformation. Clients across diverse sectors choose SUNG I for its complete in-house production flow — from CAD review and flow analysis to mold testing and global logistics — making it the go-to solution provider for internal thread mold challenges. Whether developing medical components or intricate industrial housings, the company’s custom solutions are crafted to meet exact functional requirements with exceptional precision. Thread profiles are analyzed meticulously during early-stage simulation to prevent common defects such as drag, warping, or stress concentrations during demolding. To further optimize product durability, thermal regulation channels are designed to maintain consistent cavity temperatures throughout the molding cycle. This process enhances flow behavior and material integrity, especially for engineering-grade plastics. Their R&D division continuously experiments with new gating strategies and mold base modifications that improve product performance without increasing tooling costs. These design refinements ultimately provide clients with a competitive edge in both product durability and production economy.
Plastic Injection Internal Thread Mold
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Product Description:
Automated Mold Design / Auto Unscrewing Mold
An auto unscrewing mold is a specialized design where the threaded core rotates automatically to release the plastic part during demolding. This system is ideal for products with external threads and significantly improves production efficiency and stability, making it well-suited for automated plastic injection molding lines.
This technology is widely used in industries that require high-precision and high-speed production. Whether applied in mold development, OEM/ODM manufacturing, or flexible, custom manufacturing projects, auto unscrewing molds play a vital role in optimizing productivity. When integrated into a vertically integrated production process, it allows for streamlined operations, reduced labor, and consistent product quality—making it an essential tool in modern injection molding strategies.
SUNG I INDUSTRY CORP. delivers not just engineering but partnership. Their vertically integrated process enhances quality control while accelerating production, allowing clients to benefit from shorter development cycles and optimal mold performance. As a proven product supplier and manufacturer from Taiwan, the company enables customers to scale confidently with molds designed for efficient assembly, reduced material waste, and consistent part integrity. Their dedication to client-specific innovation, paired with extensive knowledge in internal threading mechanisms, has earned them global recognition as a top exporter of refined injection solutions — ensuring their partners always receive the best plastic molding results available on the market.
Beyond technical execution, their after-sales technical consultation adds substantial value by addressing production fine-tuning or minor design revisions post-launch. Their engineers remain accessible for diagnostic evaluations, helping clients troubleshoot potential alignment issues or adapt molds to different resins. This continuity of support fosters operational resilience, particularly for facilities managing multiple product lines. The collaborative feedback loop between client and moldmaker also contributes to long-term innovation, making each mold iteration smarter, faster, and more production-efficient than the last.
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Product Description:
Automated Mold Design / External Thread Plastic Injection Mold
External thread plastic injection molds are specifically designed for products with outer threads, such as bottle caps, container lids, and threaded sleeves. These molds require precise engineering to ensure that thread profiles remain intact during demolding and that product dimensions remain consistent.
With expertise in mold development and advanced plastic injection molding, various thread types and custom specifications can be supported. These molds are widely used in everyday consumer goods, medical components, and other industrial applications.
At Sung I Industrial, we offer full custom manufacturing and OEM/ODM services, supported by a vertically integrated production process. This allows us to improve manufacturing efficiency, maintain high quality, and provide cost-effective solutions for threaded plastic parts—making us your ideal partner in thread mold production.
Product Description:
Automated Mold Design / Hydraulic Core Pulling Injection Mold
Hydraulic core pulling injection molds are ideal for plastic parts with undercuts, grooves, or side holes that cannot be ejected by standard means. Using a hydraulic cylinder, the mold activates a core-pulling mechanism to ensure smooth and accurate demolding. This technology is widely used in plastic injection molding for automotive, electronics, and industrial products.
At Sung I Industrial, we offer advanced mold development and custom manufacturing solutions. Whether for OEM/ODM projects or high-precision parts, our molds support complex processes such as insert molding and overmolding, and are compatible with various engineering plastics. Through full vertical integration, we manage everything from design to delivery—ensuring faster lead times, stable quality, and cost control. Hydraulic core pulling molds are essential for manufacturers seeking efficiency, durability, and flexibility in modern injection molding production.