Polycarbonate syringe mold, PC screw-type Luer head syringe mold
FEATURES
Foundational Hard Power — The Equipment Backbone That Builds Customer Confidence
Before discussing process sophistication, customers need to trust the physical assets that make precision possible. Ansix Tech has invested in equipment specifically selected for medical molding applications, and the value of this investment flows directly to customers.
1.1 Mold Machining Equipment: Precision That Translates to Product Reliability
Five-Axis High-Speed Machining Centers
Ansix Tech's advanced 5-axis CNC machines achieve contour accuracies of ±0.002mm (2 microns) on complex curved surfaces. For polycarbonate syringe barrels and 100ml PC syringe production, this precision ensures that parting lines are smooth and burr-free.
Value to Customer: This eliminates manual deburring operations (saving $0.08–0.12 per part in post-processing), prevents particulate contamination that could compromise sterility, and ensures the syringe loads smoothly into the injector head every time. When a medical device manufacturer receives a mold from Ansix, they are not receiving a tool that requires additional finishing—they are receiving a production-ready asset that goes straight into qualification.
Wire EDM (Slow Wire Cutting)
Capable of machining micro-features down to 0.03mm for thin-wall sections and narrow slots. This capability is critical for syringe components that require precise ejection pin holes and venting slots.
Value to Customer: Allows precise feature machining without inducing thin-wall deformation—critical for maintaining uniform wall thickness and preventing stress cracking during high-pressure applications (up to 1,200 psi for contrast injection syringes). The customer avoids the costly scenario of scrapping an entire production run due to stress fractures in thin-wall sections.
Sink EDM
Complementing CNC milling by enabling precision machining in areas unreachable by conventional cutting tools, achieving surface finishes of Ra < 0.1μm.
Value to Customer: Complex internal geometries can be manufactured without compromise, enabling innovative syringe designs that would otherwise be impossible or prohibitively expensive to produce.
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Mold Description
Product Materials:
PC
Mold Material:
S136ESR
Number of Cavities:
2
Glue Feeding Method:
Hot runner
Cooling Method:
Water cooling
Molding Cycle
32.5s
- The mold manufacturing process and product material selection
Injection Molding Machine Fleet: Scale Meets Consistency
Ansix Tech operates 260 injection molding machines with clamping forces ranging from 30 tons to 2,800 tons. The fleet includes premier brands: Japan's Fanuc, Sumitomo, Toshiba, Nissei, Engel, and Germany's Arburg (primarily for liquid silicone rubber injection molding with two-component capabilities).
All-Servo Electric Drive Systems
Servo-electric injection molding machines deliver stable repeatability with deviation ≤±0.1% , ensuring every molded syringe is identical to the previous one.
Value to Customer: For annual volumes exceeding 500,000 syringes, per-part dimensional consistency eliminates sorting and rework costs. Ansix Tech has demonstrated cost reductions of up to 30% through precision process control and vertical integration. The customer hears: "Every part from every cavity, from every batch, will assemble perfectly—no sorting, no rework, no customer complaints".
Tonnage-to-Product Matching
Proper machine sizing reduces energy consumption by 12–18% and minimizes material waste from oversized runner systems.
Value to Customer: Lower operating costs passed through in competitive pricing, and reduced environmental footprint—increasingly important for medical device manufacturers facing sustainability scrutiny.
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Inspection and Metrology: Data-Driven Quality Assurance
Coordinate Measuring Machines (CMM)
Every mold cavity undergoes full-dimensional inspection before shipment, with critical dimensional CPK maintained at ≥1.33.
Value to Customer: Production molds arrive ready for immediate qualification, eliminating the costly "teething" period that typically consumes weeks of production time and thousands of dollars in trial parts. A CPK of 1.33 represents a Six Sigma-equivalent capability, statistically guaranteeing that 99.99% of production parts will fall within specification.
Part Two: Mold Manufacturing — Core Competitiveness Through Specific Metrics
2.1 Mold Steel Selection: Material Science That Extends Tool Life
Ansix Tech constructs molds with P20-grade mold bases for structural integrity and cost efficiency, while mold cores and cavities utilize high-performance tool steels including S136, 2344, 8407, SKD11, DC53, M340, 4Cr13, 9Cr18, NAK80, and H13. The company selects mold steel based on part complexity, required service life, and the characteristics of the plastic material being molded.
Value to Customer: For polycarbonate syringe molds, the material selection directly translates to mold寿命 expectations. With proper steel selection and heat treatment, Ansix guarantees:
50万模次 (500,000 shots) for glass-fiber reinforced materials
100万模次 (1,000,000 shots) for standard plastics
Each mold is delivered with complete material certification reports and heat treatment curves, giving customers full traceability and confidence in long-term performance.
2.2 Achievable Tolerances: Precision That Defines Product Performance
Dimension Type Achievable Tolerance Customer Value
General structural features ±0.05mm Consistent assembly fit
Precision gears / medical features ±0.005mm Critical for needle concentricity and seal integrity
Surface finish (high-gloss/transparent) Ra < 0.05μm Crystal-clear PC syringe barrels with no optical distortion
For polycarbonate syringes where barrel clarity is essential for visualizing residual air or medication levels, high-gloss surface finish is non-negotiable. Ansix's capability to achieve Ra < 0.05μm ensures optical clarity that meets the most demanding medical imaging applications.
2.3 Mold Types and Configurations
Ansix Tech offers a comprehensive range of mold configurations optimized for syringe production:
Hot Runner Systems: Reduce material waste and improve fill balance for multi-cavity syringe molds. For high-volume PC syringe production, hot runner systems eliminate runner scrap, saving significant material costs over the mold's lifetime.
High-Cavity Configurations: Ansix has demonstrated capability with 96-cavity syringe molds and 128-cavity configurations, achieving industry-leading cycle times on 280-ton injection machines.
Multi-Shot Molding: For syringes requiring multiple materials or colors, Ansix offers multi-shot molding capabilities.
Value to Customer: Higher cavity counts directly translate to lower per-part costs. A 96-cavity mold producing syringes at a 12.5-second cycle time delivers extraordinary throughput, significantly reducing the unit cost for high-volume medical device programs.
2.4 Gating and Fill System Optimization
Through advanced mold flow analysis, Ansix预判熔接线、困气位置,提前优化浇口数量和位置,保证充填平衡.
Value to Customer: Optimized gating eliminates weld lines that could compromise syringe structural integrity, prevents trapped air that could create voids or surface defects, and ensures uniform filling across all cavities in multi-cavity molds. The result is consistent part quality from every cavity, every cycle.
2.5 Cooling System Design: The Hidden Driver of Cycle Time and Quality
For polycarbonate syringe molds, cooling system design is critical. PC has a shrinkage rate of 0.5–0.7%, and mold temperature needs precise control (80–120°C). Ansix designs cooling systems that:
Maintain core and cavity temperature differential within 2°C to minimize warpage
Achieve balanced cooling across all cavities in multi-cavity configurations
Enable rapid, uniform cooling to minimize cycle time while preventing residual stress
Value to Customer: Proper cooling design reduces cycle time (directly increasing throughput), eliminates warpage and dimensional variation (reducing scrap), and minimizes residual stress that could cause stress cracking in polycarbonate syringes during use.
2.6 Ejection System Design
For thin-wall polycarbonate syringes, ejection system design must prevent deformation. Ansix's approach includes:
Strategically placed ejection pins that distribute ejection forces evenly
Optimized pin size and placement to prevent marking or distortion
Venting design that prevents vacuum-induced deformation during ejection
Value to Customer: Proper ejection design ensures syringes are ejected cleanly without distortion, maintaining dimensional accuracy and preventing surface defects that could compromise sterility or functionality.
Part Three: Injection Molding Process Control — Reducing Customer Quality Anxiety
Customers fear: shrinkage, flash, dimensional instability, and batch-to-batch color variation. Ansix addresses each systematically.
3.1 Process Standardization: Locked and Controlled
All injection molding machines are networked, with 成型参数 (temperature, pressure, speed, time) locked in the MES system—only engineers are authorized to make adjustments. Every batch undergoes first-article and last-article inspection.
Value to Customer: Process lockdown eliminates the variability that plagues manual machine operation. Customers receive consistent parts across shifts, across days, and across years of production.
3.2 Dimensional Stability Control
Ansix pairs molds with temperature-controlled mold temperature controllers (water/oil) , maintaining core and cavity temperature differential within 2°C to minimize warpage and distortion.
Demonstrated Performance: For comparable支架 products, three consecutive production batches over one week showed critical hole spacing variation ≤0.02mm.
Value to Customer: Dimensional stability means parts assemble correctly every time. No sorting, no rework, no field failures. For syringe applications, this translates to consistent needle alignment, reliable plunger seals, and leak-proof performance.
3.3 Surface Quality and Appearance Grades
Ansix achieves and guarantees specific appearance grades:
Requirement Achievable Specification Customer Value
Transparent parts No bubbles, no flow marks Clear visualization of medication and air
Plating-ready parts No gas marks Consistent plating adhesion
High-gloss parts Surface roughness Ra ≤0.2μm Premium appearance, reduced secondary finishing
For parts requiring painting or printing, Ansix provides deformation compensation预留 in the mold design, ensuring printing registration accuracy within ±0.1mm.
3.4 Special Material Capabilities
Ansix has extensive实战经验 with a wide range of engineering plastics:
PC/ABS — Medical device housings
Polycarbonate (PC) — Syringe barrels, transparent medical components
PPS+40%GF — High-temperature, high-strength applications
PEEK — Implantable and high-performance medical devices
PTFE/PFA — Chemically resistant components
PA6+GF30 — Structural medical components
PBT — Electrical and medical device components
PEI/PPS/LCP — High-temperature, precision applications
Liquid Silicone Rubber (LSR) — Seals, gaskets, and soft-touch components
Value to Customer: For each material, Ansix brings proven processing parameters, reducing development risk and accelerating time-to-market.
3.5 Regulatory Compliance
Ansix emphasizes flammability ratings (UL94 V-0 for wire-wound housings) and weather resistance (UV testing 3,000 hours with no discoloration) .
Value to Customer: Medical device manufacturers receive components that meet the most stringent regulatory requirements, reducing compliance risk and accelerating regulatory approval.
Part Four: Full-Process Service — Reducing Customer Management Costs
4.1 Early Intervention: Design for Manufacturability (DFM) Reports
Before contract signing, Ansix provides a comprehensive mold feasibility analysis report including:
Draft angle recommendations
Wall thickness optimization
Gate location selection
Ejector pin mark location and allowable range
Value to Customer: Identifies and resolves manufacturability issues before tooling begins—preventing the costly scenario of discovering structural problems after the mold is already cut.
4.2 Trial Molding and Sampling: Systematic Validation
Ansix provides T0 through T3 trial samples, with improvement reports after each round. The company can rapidly replace inserts to validate different approaches without rebuilding the entire mold.
Value to Customer: Systematic validation ensures the mold is right before production begins. With an average of just two mold trials before production readiness, Ansix minimizes the time and cost typically consumed by trial-and-error debugging.
4.3 Small-Batch Validation: Prove Before Production
Before full production release, Ansix provides 100–500 shot trial production runs, with yield rate and CPK statistics provided to confirm stability.
Value to Customer: Customers approve production only after seeing real statistical evidence of process capability, eliminating the risk of discovering quality issues after millions of parts have been produced.
4.4 Maintenance and Spare Parts: Protecting the Investment
Ansix delivers spare wear parts (ejector pins, cores) with the mold, performs maintenance every 200,000 shots, and provides lifetime repair at cost.
Value to Customer: The mold is protected throughout its lifecycle. Customers are never stranded with a broken mold and no replacement parts. Lifetime cost of ownership is predictable and minimized.
Part Five: Differentiated Commitment — Direct Solutions to Common Industry Pain Points
Common Customer Complaint Ansix's Professional Response
"The mold needs constant repair, disrupting orders." "We perform 2,000-shot aging tests before delivery and provide a three-year structural warranty (excluding normal wear parts). You get a mold that runs, not one that requires constant attention."
"Flash is excessive, increasing post-processing costs." "We machine parting surfaces to 0.005mm fit precision and use self-locking clamp force compensation, ensuring flash controlled within 0.03mm per batch—eliminating manual deburring."
"Dimensions change from batch to batch." "We install ultrasonic wall-thickness sensors that provide real-time feedback and automatically compensate holding pressure. We also embed in-mold temperature and pressure sensors for closed-loop control."
"Mold repair takes too long." "We maintain in-house electrode machining and EDM workshops. Mold repairs rarely leave the facility. Standard weld repair/insert replacement is completed within 24 hours."
Part Six: Polycarbonate Material Selection — Characteristics and Specifications
6.1 PC Material Properties Relevant to Syringe Applications
Polycarbonate is the material of choice for medical syringes due to its exceptional combination of properties:
Property Specification Relevance to Syringe Application
Transparency High optical clarity Visual confirmation of medication, air bubbles, and blood flash
Impact resistance High (Izod notched: ~85 J/m) Withstands drops and handling without cracking
Heat resistance HDT ~130°C Withstands sterilization (autoclave, EtO, gamma)
Dimensional stability Low creep Maintains seal integrity over time
Chemical resistance Good resistance to oils, moderate to solvents Compatible with wide range of medications
Biocompatibility USP Class VI, ISO 10993 Safe for patient contact
6.2 PC Grades Commonly Used in Syringe Manufacturing
Medical-grade PC (e.g., Covestro Makrolon® 2458, SABIC Lexan® HP series): Specifically formulated for medical applications with biocompatibility certification
High-flow PC (e.g., Makrolon® 2658): Enables filling of thin-wall syringe barrels with complex geometries
Gamma-stabilized PC: Formulated to maintain properties after gamma sterilization
6.3 Material Challenges Specific to PC Syringe Molding
Challenge Technical Consideration Ansix Solution
Stress cracking PC is prone to stress cracking, especially in contact with certain chemicals Optimized molding parameters minimize residual stress; annealing post-processing when required
Hydrolysis PC hydrolyzes at high temperatures Precise moisture control (drying to <0.02% moisture content); controlled melt temperatures
Shrinkage variation PC shrinkage 0.5–0.7%, batch-to-batch variability Closed-loop process control; real-time dimensional monitoring
Thin-wall filling PC has high viscosity; thin walls <1mm are challenging High-speed injection, optimized gating, heated runners
Part Seven: Cost Reduction — Systematic Value Engineering
Ansix Tech systematically reduces customer costs through multiple levers:
7.1 Material Cost Optimization
Runnerless (hot runner) systems eliminate runner scrap, saving 5–15% of material cost
Multi-cavity optimization spreads tooling cost across higher volumes
Material selection guidance identifies cost-effective alternatives without compromising performance
7.2 Process Efficiency Optimization
Cycle time reduction through optimized cooling design and process parameters
Automated production with 70% automated machining ratio reduces labor costs
Zero-defect manufacturing eliminates scrap and rework costs
7.3 Vertical Integration Savings
Ansix's integrated model—design, tooling, molding, secondary operations, and assembly under one roof—eliminates the markups and coordination costs of multiple suppliers.
Demonstrated Result: Ansix has achieved cost reductions of up to 30% through precision process control and vertical integration.
Part Eight: Capacity and Delivery — Scaling to Meet Customer Demand
8.1 Production Capacity
With 260 injection molding machines spanning 30 to 2,800 tons, Ansix can scale from prototyping to millions of parts per month.
8.2 Delivery Standards
Mold Complexity Standard Lead Time Expedited Lead Time
Simple molds 10 days —
Medium complexity 25–45 days 20 days (with validation steps preserved)
High-complexity medical molds Negotiated based on requirements Expedited options available
Value to Customer: Predictable lead times enable accurate production planning. Expedited options are available without compromising quality validation.
8.3 Geographic Advantage
With four production bases across China and Vietnam, Ansix offers:
Supply chain redundancy — production can be shifted between facilities if needed
Cost-competitive labor in Vietnam for labor-intensive operations
Proximity to Asian supply chains for rapid material sourcing
Conclusion: The Ansix Difference
For Ansix Tech, a mold is not a block of steel — it is a profit engine for the customer. Every design decision, every process parameter, and every quality check is framed in terms of the value it delivers:
Lower total cost of ownership through longer mold life, reduced maintenance, and vertical integration
Reduced production risks through systematic validation, process control, and proven capability
Faster time-to-market through integrated development, rapid prototyping, and efficient validation
Uncompromised quality through ISO13485 certification, Six Sigma capability, and rigorous inspection
When a client initiates a polycarbonate syringe mold project with Ansix Tech, they gain access to a comprehensive value proposition that extends far beyond mold manufacturing: low-risk product development, impeccable product quality, scalable production capacity, and a partner committed to their success.
The company's 28-year heritage, 30,000+ molds delivered, and commitment to translating every engineering specification into tangible customer benefits make Ansix Tech the partner of choice for medical device OEMs requiring precision polycarbonate syringe molds and 100ml PC syringe molds.
For a detailed DFM review of your specific polycarbonate syringe project, Ansix Tech invites you to schedule a consultation where their engineering team can demonstrate how they pre-emptively address weld lines, trapped air, shrinkage, and other critical risks—ensuring your syringe mold delivers flawless performance from the first shot to the millionth.
Ansix Tech Co Ltd
If you have any plans related to Polycarbonate syringe mold, 100ml PC syringe mold , you can contact us at any time. We will turn your ideas into reality, let you realize your dreams, and obtain large orders from the market. Our contact information is info@ansixtech.com. Or contact our CTO, mail: stephen@ansixtech.com
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