LSR Liquid Silicone Negative Pressure Ball Drainage Ball
FEATURES
Product Introduction — LSR Liquid Silicone Negative Pressure Drainage Ball
The Negative Pressure Drainage Ball is a crucial medical consumable widely used in postoperative drainage systems to remove blood, exudates, and excess fluid from wound sites, thereby preventing hematoma formation and eliminating dead space. It is typically composed of a collapsible ball body with an adjustable hose connection, designed to collect fluid and gas while maintaining controlled negative pressure.
Our LSR Liquid Silicone Negative Pressure Drainage Balls are manufactured from 100% medical-grade liquid silicone rubber (LSR), which offers excellent biocompatibility and hypoallergenic properties that minimize the risk of allergic reactions to end users. The material is available in medical-grade certifications such as MY LSR 3650 series (conforming to USP Class VI and ISO 10993) and RH6250-60YH (FDA-approved, ISO 10993-compliant).
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Mold Description
Product Materials:
SILICONE
Soft rubber: LSR
Mold Material:
S136ESR
Number of Cavities:
4
Glue Feeding Method:
Hot runner
Cooling Method:
Water cooling
Molding Cycle
22.5s
- The mold manufacturing process and product material selection
Key Product Features:
Feature Customer Value
Excellent biocompatibility Conforms to USP Class VI & ISO 10993; minimizes patient allergic reactions
High transparency Clear visualization of drainage fluid for clinical monitoring
Outstanding mechanical properties Tensile strength ≥9.5 MPa; elongation ≥400%; tear strength ≥35 KN/m
Thermal & ozone stability Withstands extreme temperatures; UV-resistant; gamma/EO/steam sterilizable
Fast recovery after puncture High resilience; maintains negative pressure integrity after needle insertion
Low compression set Maintains shape memory even under prolonged compression
Adjustable Shore A hardness (40–70) Customizable flexibility for different drainage applications
2. Manufacturing Process & Production Efficiency
2.1 Raw Material Preparation
We source platinum-cured, two-component LSR materials with a 1:1 mixing ratio. Both components A and B are stored in sealed containers at temperatures below 23°C to maintain stability and optimal fluidity. Prior to processing, the material is thoroughly agitated to disperse any sedimentation that may occur during storage.
2.2 Precision Metering & Mixing
Our production lines utilize advanced precision metering pumps that ensure exact ratio control between the base polymer and curing agent. A static or dynamic mixer homogenizes the components immediately prior to injection. The ratio error is maintained at less than 3%, ensuring consistent curing properties across all batches.
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Cold-Runner Injection Molding
Unlike thermoplastic molding (where material is melted in the barrel and cooled in the mold), LSR processing operates on a fundamentally opposite principle: the LSR mixture is kept cool until injection, and the mold is actively heated to trigger the vulcanization (curing) reaction.
We adopt cold-runner systems (valve-gated) for LSR injection molding. These systems prevent material curing in the runner channels, achieving zero-waste production and consistent shot weight. The cold-runner approach:
Eliminates the need to remove the glue injection channel, reducing labor intensity
Avoids large amounts of material waste (LSR is an expensive raw material)
Shortens operation time and increases production efficiency
The injection nozzle is controlled by a needle valve for forward flow control. The filling port diameter is typically maintained between 0.2mm–0.5mm to optimize flow with low-viscosity LSR compounds.
2.4 Curing & Vulcanization
The mold is heated to temperatures ranging between 150°C–200°C, precisely controlled within ±2°C across all zones to ensure uniform and complete vulcanization. The material passes through the machine nozzle and cold-runner deck at room temperature before reaching the heated cavity, where the temperature steeply increases due to mold temperature and shear. Typical cycle times range from 10 to 90 seconds depending on part geometry and material formulation.
2.5 Demolding & Post-Processing
Cured LSR naturally exhibits flexibility that facilitates demolding, but it can adhere to metal surfaces. Our molds utilize a combination of demolding plates, ejector pins, and pneumatic demolding systems to ensure clean release without part damage. Inverted cone or mushroom-shaped ejector pins provide larger contact pressure, improving sealing performance and preventing glue overflow.
For applications requiring post-processing:
Sterilization: Ethylene oxide, gamma irradiation, or steam autoclave (validated per ISO 11135/ISO 11137)
Packaging: Medical-grade sterile pouches with lot number traceability
Labeling: Direct marking options (laser etching or pad printing)
3. Delivery Efficiency & Supply Chain Excellence
3.1 Production Scale & Capacity
Ansix Tech operates four production bases in China and Vietnam, with a total fleet of 260 injection molding machines ranging from 30 tons to 2,800 tons clamping force. Our primary machine brands include FANUC (Japan), Sumitomo, Toshiba, Nissei, ARBURG (Germany) — with ARBURG machines dedicated primarily to LSR injection molding in two-component configurations. Domestic machines include Haitian and Taichung injection molding systems.
3.2 Lean Manufacturing & Fast Turnaround
Our manufacturing workflows are optimized for both prototyping and mass production:
Production Phase Standard Lead Time Express Service
Simple mold fabrication 10 days —
Medium-complexity mold 25–45 days 20 days (expedited)
High-cavitation production mold 45–60 days —
First sample (T0) delivery 3–5 weeks from DFM sign-off —
Ramp-up to mass production 2–4 weeks after sample approval —
3.3 Supply Chain & Logistics
We maintain long-term partnerships with certified raw material suppliers (e.g., Momentive, Dow Corning, Wacker) and manage inventory buffers to ensure uninterrupted production. Our logistics network enables:
OEM/ODM packaging with customer branding
Air freight for urgent orders (3–5 days to global destinations)
Sea freight for volume orders (20–30 days to US/EU)
Warehousing hubs in key regions to buffer demand fluctuations
3.4 Customer Value from Delivery Efficiency
Customer Concern Our Solution Value Delivered
Long lead times for molds In-house mold manufacturing with electrode/EDM workshop Mold repairs/iterations returned within 24 hours
Missed production deadlines MES-linked scheduling with real-time capacity visibility On-time delivery rate ≥98%
Supply disruption risk Multi-site production + buffer inventory strategy Continuous supply even during peak demand
Expedite costs 24/7 production shift capacity Rush orders accommodated without premium markup
4. Quality Assurance — Regulatory Compliance & Process Control
4.1 Quality Management System (QMS)
Ansix Tech maintains certifications for ISO 9001, ISO 13485:2016, and IATF 16949, with ISO Class 8 Cleanrooms and GMP compliance, meeting US FDA 510K standards for medical devices. Our QMS governs:
Document control and change management
Supplier quality audit and traceability
Corrective and preventive actions (CAPA)
Risk management (per ISO 14971:2019)
4.2 Incoming Material Control
Only materials certified as biocompatible per ISO 10993-1 and/or USP Class VI are used. Traceability of lot numbers and secure storage under defined temperature/humidity conditions are essential to prevent contamination or degradation. Each incoming batch receives a Certificate of Analysis (CoA) before release to production.
4.3 In-Process Quality Control
Our process validation follows IQ/OQ/PQ protocols (Installation Qualification / Operational Qualification / Performance Qualification), with critical process parameters (CPPs) — including injection pressure, mold temperature, curing time — locked into the MES system. Only authorized engineers can adjust these parameters, ensuring consistency.
Key in-process controls:
Statistical Process Control (SPC): Real-time monitoring of dimensional stability, with control charts tracking key features
First-article and last-article inspection: Each batch undergoes comparison to validate process stability
Automated Optical Inspection (AOI): High-speed camera systems detect surface defects, flash, bubbles, and incomplete fills
Coordinate Measuring Machine (CMM): For precision dimensional verification (tolerance capability up to ±0.005 mm)
4.4 Final Inspection & Release
Inspection Type Method Acceptance Criteria
Dimensional accuracy CMM / Optical comparator Key dimensions: ±0.02 mm; CPK ≥1.33
Surface quality Visual inspection (10x magnification) No bubbles, flow marks, or foreign particles
Flash check 360° optical scanning ≤0.03 mm max; no manual deflashing needed
Functionality Negative pressure retention test Maintains vacuum >30 seconds
Biocompatibility Third-party lab testing (ISO 10993) Cytotoxicity, sensitization, leachables — passed
Sterilization validation EtO residue / Gamma dose mapping SAL 10⁻⁶
4.5 Traceability
Each drainage ball receives a unique lot number traceable to:
Raw material batch number and CoA
Production date, shift, and machine ID
Process parameter set (recorded in MES)
Inspection results (dimensional, functional, visual)
This ensures full traceability for regulatory audits and post-market surveillance.
4.6 Customer Value from Quality Assurance
Customer Concern Our Solution Risk Reduced
Regulatory audit non-compliance ISO 13485 QMS + ISO 14971 risk management Audit-ready documentation; minimized compliance penalties
Inconsistent part dimensions MES-locked parameters + CMM inspection with CPK tracking Dimensional variation <0.02 mm batch-to-batch
Biocompatibility failures Only ISO 10993/USP Class VI certified materials Zero patient reaction risks
In-field product recalls Full traceability system Fast, precise recall targeting; minimized liability
5. Ansix Tech’s Competitive Cost Control Strategy
Many injection molding providers focus only on material and labor costs. Ansix Tech takes a holistic cost optimization approach across five levers:
5.1 Material Cost Reduction
Cold-runner systems eliminate material waste compared to conventional runner designs (waste reduction: 15–30% of raw material cost)
Bulk purchasing agreements with Tier-1 LSR suppliers (Momentive, Dow Corning) secure favorable pricing for volume orders
Just-in-time inventory reduces warehousing and obsolescence costs
5.2 Process Efficiency Optimization
Moldflow analysis prior to tooling reduces trial iterations (typically 3+ iterations → 1–2 iterations)
Multi-cavity mold designs (4, 8, 16, or 32 cavities) increase output per cycle while maintaining individual cavity traceability
Automated part handling (robotic pickers, conveyor systems) reduces labor costs by 30–50%
Cycle time optimization through thermal balancing and vacuum-assisted venting reduces per-part time by 10–20%
5.3 Mold Life & Maintenance Savings
Cost Area Conventional Approach Ansix Tech Approach Savings
Mold repair downtime Send to external shop (5–10 days) In-house electrode/EDM workshop (24-hour turnaround) 80–90% less downtime
Premature mold failure Rebuild entire mold Hardened tool steel + regular maintenance schedule 50% reduction in major repairs
Spare parts inventory Order as needed (long lead time) Mold ships with spare ejector pins/core inserts Reduced emergency order costs
5.4 Value Engineering (Collaborative Cost Reduction)
We work with customers during the DFM phase to identify cost-saving opportunities without compromising function:
Wall thickness optimization: Eliminating unnecessary thickness reduces material usage and shortens cycle time
Draft angle adjustment: Improves demolding and reduces reject rates
Part consolidation: Combining multiple components into a single molded part reduces assembly costs
Tolerance rationalization: Specifying ±0.05 mm instead of ±0.005 mm where design permits reduces mold cost by 20–30%
5.5 Scale-Based Cost Advantage
With 260 injection molding machines across four facilities, Ansix Tech achieves economies of scale that smaller manufacturers cannot match. This translates directly into lower per-part pricing for customers as volumes increase.
Customer Value from Cost Control
Customer Benefit Measurable Impact
Lower landed cost per part 15–30% reduction in total cost of ownership compared to competitors
Predictable pricing for 3+ years Fixed cost structure with bulk material pricing locked in
No hidden tooling maintenance costs Mold warranty (3 years structural) included
Reduced secondary operation costs Flash-free parts eliminate manual deflashing
6. Mold Manufacturing & Material Selection — The Foundation of Flawless Production
6.1 Precision Mold Machining Equipment
Equipment Type Capability Customer Value
Five-axis high-speed machining centers 0.002 mm accuracy on complex curved surfaces Smooth parting lines; no flash; no need for secondary deburring
Wire-cut EDM (slow-wire) Machining of 0.03 mm micro-holes and narrow slots Thin-wall section without deformation; precise venting channels
CNC electrode machining center In-house electrode production for EDM 24-hour mold repair turnaround; no external vendor dependency
Coordinate Measuring Machine (CMM) Full dimensional inspection with CPK reporting Each mold shipped with complete inspection report; key dimension CPK ≥1.33
Optical imaging measurement Rapid surface and contour verification Visual confirmation of gate location and vent placement
6.2 Mold Steel Selection & Performance Guarantees
Steel Type Hardness (HRC) Application Life Expectancy (injection cycles)
P20 28–32 Mold bases; non-cosmetic cores 100,000+ (standard applications)
S136 / 4Cr13 (Stavax) 48–52 High-gloss cavities; transparent parts; medical 500,000+
2343 / 8407 (H13) 46–50 High-temperature LSR; large production runs 500,000+
NAK80 38–42 High polish; consumer appearance parts 300,000+
M340 (corrosion-resistant) 52–54 Medical; chemical-exposure applications 500,000+
DC53 / SKD11 58–62 Wear-resistant cores; high-volume production 1,000,000+
Invar 36 Low CTE Precision critical dimension control 200,000+
Customer promise: For unfilled LSR materials (no abrasive fillers), our standard mold guarantees 1 million cycles with proper maintenance. For glass-fiber filled or other abrasive LSR grades, we guarantee 500,000 cycles before significant wear — and we provide mold steel material reports and heat treatment curves with every tool.
6.3 Mold Cooling & Thermal Management
Proper thermal control is critical for LSR molding because LSR is kept cool until injection, then cured in a heated tool. Our molds incorporate:
Multi-zone temperature control: Separate heating circuits for cavity and core; temperature deviation maintained within ±2°C across all zones
3D-profiled cooling channels: Optimized using moldflow simulation to eliminate hotspots and ensure uniform part shrinkage
Insulated hot-cold interfaces: Cold-runner system remains cool (20–40°C) while mold cavities are heated (160–200°C)
Heated manifolds vs. cold-runner decks: Tailored selection based on production volume and material grade
6.4 Runner & Gate Systems
System Type Description Best For Waste Impact
Cold-runner with valve gates Isolated runner channels kept cool; pin-point valves sequence injection High-volume medical production; multi-cavity molds Zero runner waste
Cold-runner with open nozzles Continuous material flow; simpler maintenance Low- to medium-volume; less complex geometry Minimal waste (purge only)
Hot-runner (limited LSR use) Heated manifold keeps LSR fluid Specific applications requiring unique flow patterns Low waste but limited
For our LSR drainage ball production, we primarily utilize valve-gated cold-runner systems which eliminate runner waste entirely while preventing premature curing — reducing material consumption by 15–25% compared to conventional systems.
6.5 Venting & Flash Control Design
Because LSR has low viscosity similar to honey, it can easily flow into micro-gaps between mold faces, creating flash (unwanted thin material along parting lines). Flash not only creates cosmetic defects but increases inspection cost and can compromise sterilization sealing.
Our approach to flash elimination:
Design Element Specification Result
Parting line clearance Controlled ≤0.005 mm (machined to micron accuracy) No material seepage; flash eliminated
Vent depth 0.005–0.020 mm (optimized via flow simulation) Air escapes; LSR does not
Vent width 3–6 mm Adequate air flow without leakage
Vacuum venting system Integrated vacuum chambers Removes air from cavity before injection; eliminates bubbles in complex geometries
Parting line positioning Along natural geometry transitions (non-cosmetic areas) Any unavoidable flash hidden from functional surfaces
Mold alignment precision CMM-verified alignment pins; hardened alignment locks Even closure; no misalignment-induced flash
Customer outcome: Parts exiting the mold are flash-free (“ready-to-use”), eliminating costly manual deflashing operations that add 5–15% to total part cost and risk part damage.
6.6 Demolding & Ejection Systems
Cured LSR can adhere to metal surfaces due to its tacky properties and can be challenging to demold despite its flexibility. We design demolding systems with:
Inverted cone / mushroom-shaped ejector pins: Larger contact pressure improves sealing performance and prevents glue overflow
Air ejectors: Compressed air-assisted release for delicate parts that cannot accommodate ejector pin marks
Robotic pickers: Automated part removal for high-volume production; eliminates manual intervention and ensures consistent handling
Controlled ejector pin tolerances: Gap between ejector pin and guide pin sleeve ≤0.01 mm; prevents glue overflow
Release coatings: Optional nano-coatings on cavity surfaces to reduce LSR adhesion and facilitate release
6.7 Moldflow Analysis & DFM (Design for Manufacturing)
Before building any mold, Ansix Tech performs a comprehensive Design for Manufacturing (DFM) review that directly translates technical parameters into customer value:
DFM Analysis Element Technical Focus Customer Value
Gate location optimization Simulation of filling patterns; identification of weld line and trapped air locations Eliminates internal voids and surface bubbles; no scrap due to cosmetic defects
Vent placement planning Analysis of last filling points; identification of dead zones No trapped air burns; consistent part transparency
Shrinkage compensation LSR shrinkage typically 0.2–0.5% (varies with hardness and curing conditions) Parts meet print dimensions without post-machining
Wall thickness optimization Uniform thickness guidance ±0.05 mm Reduced sink marks; faster cycle times; lower material consumption
Draft angle recommendation Minimum 1–2 degrees (unfilled) to 3 degrees (filled LSR) Clean demolding; no part distortion
Ejector pin mark allowance mapping Defined locations and depths for ejector pin placement No functional surfaces compromised; assembly consistency
Customer value from DFM: Problems such as weld lines, trapped air, sink marks, and incomplete fills are identified and resolved before mold build — reducing tooling rework costs by 40–60% and cutting time-to-market by 2–3 weeks.
7. Smart Manufacturing Integration & Efficiency Enhancement
7.1 MES-Connected Production System
All 260 injection molding machines are connected to a centralized Manufacturing Execution System (MES). Each machine:
Logs actual cycle times and performance metrics (OEE — Overall Equipment Effectiveness)
Stores current molding parameters (temperature, pressure, injection speed, cooling time, etc.)
Tracks shot count and cumulative production against scheduled targets
Alerts maintenance personnel when preventive maintenance thresholds are reached
7.2 Parameter Locking & Traceability
Critical process parameters (CPPs) are locked within the MES system. Only authorized engineers with specific login credentials can modify them. Each change:
Requires documented reason for change
Triggers a re-validation protocol (DOE — Design of Experiments if appropriate)
Is logged with timestamp and operator ID
Cannot be overridden by machine operators during production
Customer benefit: No unauthorized parameter drift. If a customer audits production records, every parameter setting is transparent, traceable, and validated.
7.3 Real-Time Monitoring & Closed-Loop Control
For critical medical components like LSR drainage balls, we deploy:
In-mold pressure sensors: Monitor cavity pressure during injection and post-filling
Ultrasonic wall thickness sensors: Real-time thickness measurement; feedback loop adjusts pack/hold pressure automatically
Thermal imaging cameras: Monitor temperature distribution across multi-cavity molds; alert to cold spots
Online CMM (in-process measurement): Select parts automatically measured during production; feedback to MES
7.4 Automated Material Handling
Centralized LSR material supply system: Barrels of components A and B pumped via closed lines to each molding cell
Inline static mixers: Homogenization immediately prior to injection; minimizes material degradation
Automatic purge systems: Scheduled purging prevents material curing in nozzles and barrels
Robotic part handling: 6-axis articulated robots for demolding, trimming, and inspection
7.5 Efficiency Metrics (Actual Achieved Values)
Metric Industry Average Ansix Tech Achievement
Machine OEE (Overall Equipment Effectiveness) 55–65% 78–85%
Cycle time for drainage ball (4 cavities) 45–60 seconds 28–35 seconds
Changeover time (mold change + parameter setup) 90–120 minutes 45–60 minutes
First-pass yield (FPY) 75–85% 92–96%
Scrap rate (early production) 8–12% 3–5%
Customer Value from Smart Manufacturing
Customer Concern Smart Manufacturing Solution Measurable Outcome
Part-to-part inconsistency In-mold sensors + closed-loop control Dimensional variation <0.02 mm across 100,000 parts
High scrap waste Real-time defect detection + automated rejection 50% reduction in scrap costs
Long machine changeover downtime Standardized mold bases + parameter libraries 50–60% faster changeover → higher effective capacity
Batch traceability gaps MES logging of each shot Full traceability from raw material to final part
8. Process Quality Assurance — Eliminating Customer Risk
8.1 Stage-Gate Quality Gates
Every production order passes through mandatory quality gates:
Gate 0 — DFM Review: Design-for-manufacturability sign-off before tooling start
Gate 1 — T0 First Sample: Mold validation; first shots inspected against print; tool adjustments made
Gate 2 — T1 Process Validation: Optimized parameters established; capability study performed (CPK ≥1.33)
Gate 3 — Pilot Run (100–500 shots): Full validation on production machine; GR&R study on measurement system
Gate 4 — First Production Batch: Statistical lot acceptance; full documentation package delivered
Gate 5 — Ongoing Process Control: SPC charts maintained; monthly capability review
8.2 Statistical Process Control (SPC)
Critical-to-quality (CTQ) dimensions are tracked using SPC:
X-bar & R charts — maintain centerline and control limits
CPK calculation — monthly review; target CPK ≥1.33 (process capable)
Out-of-control action plan — immediate CAPA investigation when control limits breached
8.3 Risk Management (ISO 14971)
We integrate risk management throughout the product lifecycle:
Risk Category Mitigation Action
Biocompatibility failure Only certified medical-grade materials; periodic ISO 10993 re-testing
Negative pressure leakage 100% functional testing on each ball
Sterilization compatibility Pre-validated sterilization protocols (EtO, gamma, autoclave)
Part breakage during use Tensile + tear strength testing per ASTM D412
Traceability loss Full lot-level traceability with barcode scanning
8.4 Cleanroom Compliance
Production of LSR drainage balls takes place in:
ISO Class 8 Cleanrooms (Class 100,000) for standard medical components
ISO Class 7 Cleanrooms (Class 10,000) for high-cleanliness applications
Controlled environment with HEPA filtration, positive air pressure, and gowning protocols
Regular particle and microbial monitoring is conducted per ISO 14644-1 standards.
8.5 Customer Value from Quality Assurance
Customer Pain Point How We Solve It Value
Risk of regulatory audit findings ISO 13485 QMS + ISO 14971 risk management Full audit readiness; no shutdowns
Concern about biocompatibility ISO 10993-certified materials + third-party testing Zero patient adverse events
Fear of dimension instability In-process CMM + SPC tracking CPK documented for every critical feature
Worry about inconsistent appearance AOI (automated optical inspection) + human verification 100% visual inspection on high-criticality surfaces
Difficulty proving quality to regulators Complete validation documentation (IQ/OQ/PQ) + material certificates Regulator-ready package delivered with each project
9. Ansix Tech’s Industry Experience & Reliability Guarantee
9.1 History & Expertise
Ansix Tech has over 28 years of manufacturing experience in precision injection molding, with a specialized focus on medical devices and liquid silicone rubber (LSR) applications. We maintain four manufacturing facilities (two in China, two in Vietnam) totaling more than 180,000 square meters of production floor space.
Our engineering team — including 120+ mold designers and process engineers — has successfully delivered thousands of mold tooling projects across:
Medical devices and surgical instruments
Catheters and fluid management systems
Respiratory devices and masks
Wearable medical technology
Drug delivery systems
9.2 Key LSR Drainage Ball References
Our technical solutions for LSR negative pressure drainage balls have been adopted by medical device companies in North America, Europe, and Asia. Key engineering achievements include:
Challenge Ansix Tech Solution Customer Outcome
Maintaining negative pressure integrity after sterilization Optimized wall thickness distribution + low-compression set material <2% degradation in vacuum retention post-sterilization
Eliminating bubbles in transparent balls Vacuum venting + moldflow-optimized filling 99.5% bubble-free first-pass yield
Reducing cycle time for high-volume demand 16-cavity cold-runner mold with robotic demolding 3.2 seconds/part at full capacity
Meeting FDA 510K submission requirements Full validation package (IQ/OQ/PQ) + material certificates Accelerated regulatory clearance
9.3 End-to-End Service Coverage
Unlike mold shops that only supply tooling or job shops that only run parts, Ansix Tech provides one-stop service:
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Concept → DFM Analysis → Mold Design → Mold Manufacturing → Mold Sampling (T0–T3) →
Pilot Run (100–500 shots) → Process Validation → Mass Production →
Quality Inspection → Sterilization → Packaging → Logistics → After-Sales Support
9.4 Reliability Guarantees
Guarantee Terms
Mold structural warranty 3 years (excluding normal wear on ejector pins and gate inserts)
Mold repair turnaround (in-house) 24 hours for standard repairs; 72 hours for major rework
Production capacity buffer Minimum 15% spare capacity across our machine fleet
Continuous improvement commitment Quarterly cost-down review; annual productivity improvement target 5–10%
Supply continuity Dual sourcing from Vietnam + China facilities
9.5 Reducing Customer Risk — Case Study Example
Situation: A US-based medical device company needed a 16-cavity mold for an LSR drainage ball with critical transparency requirements and CPK ≥1.33 on 12 key dimensions.
Ansix Tech Solution:
DFM review identified optimal gate locations and vent placement; eliminated a problematic thick section that would have caused bubbles
Material selection — RH6250-60YH (ISO 10993/USP Class VI certified) provided optimal transparency and tear strength
Mold design — Cold-runner system with 16 valve gates; vacuum venting; M340 steel for corrosion resistance
Process validation — 500-shot pilot run achieved CPK 1.45–1.68 on all 12 critical dimensions; bubble rate <0.5%
Full documentation package — IQ/OQ/PQ protocols; material CoA; dimensional inspection reports; biocompatibility test results
Outcome: Customer received FDA 510K clearance within 8 months (industry average for comparable devices is 12–15 months). Production volume achieved 3.2 seconds/part at 99.2% first-pass yield. Total cost of ownership: 27% lower than their previous supplier.
10. Conclusion: Translating Technical Expertise into Measurable Customer Value
The technical language of injection molding — tolerances in microns, cycle times in seconds, cure temperatures in degrees Celsius — is precise but incomplete. What truly matters to medical device manufacturers is not the metric itself but what that metric delivers: reliability that prevents patient risk, repeatability that ensures regulatory compliance, and efficiency that directly reduces landed cost per part.
At Ansix Tech, every technical decision is evaluated against a single question: Does this help our customer?
Summary: What Ansix Tech Solves for Our Customers
Customer Problem How Ansix Tech Solves It
High scrap due to bubbles Vacuum venting + moldflow-optimized filling
Flash requiring costly manual trimming Micron-precision parting line control (<0.005 mm clearance)
Inconsistent dimensions batch-to-batch MES-locked parameters + in-process CMM feedback
Long mold repair lead times In-house electrode/EDM workshop (24-hour turnaround)
Regulatory audit anxiety ISO 13485 QMS + full validation (IQ/OQ/PQ) + traceability
High unit cost Cold-runner (zero waste) + multi-cavity + automation
Supply chain risk Dual-site manufacturing (China + Vietnam) + inventory buffers
Material compatibility concerns Only ISO 10993 / USP Class VI certified materials
Difficult demolding / part damage Optimized ejector pin geometry + robotic demolding
Slow mold build for complex geometry 5-axis machining + 0.002 mm accuracy
Final Commitment
“A mold is not a piece of metal — it is a money-printing machine. At Ansix Tech, we design molds with production robustness, balanced thermal profiles, and optimized exhaust pathways to ensure that when the mold reaches your production line, it is ready to run — no debugging, minimal flash, long service life.”
We invite you to experience a full DFM report walk-through on an existing product. You will see, in concrete terms, how we solve weld lines, trapped air, sink marks, and other risks before they ever reach the production floor.
Contact Ansix Tech for a confidential consultation on your LSR Liquid Silicone Negative Pressure Drainage Ball project.
Ansix Tech — 28 years of precision injection molding expertise. Four facilities. 260 injection molding machines. One mission: translating technical excellence into measurable customer value.
ISO 9001 · ISO 13485:2016 · IATF 16949 · ISO Class 8 Cleanroom · GMP · FDA 510K Ready
Ansix Tech Co Ltd
If you have any plans related to LSR Liquid Silicone Negative Pressure Ball Drainage Ball , 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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