Beverage bottle caps, plastic bottle caps, mineral water bottle caps, standard plastic bottle caps
FEATURES
Product Overview and Specifications – What Ansix Tech Can Deliver
Ansix Tech specializes in the full spectrum of plastic caps and closures, offering a complete range of specifications tailored to diverse industry requirements.
1.1 Product Types and Classifications
Ansix Tech manufactures plastic bottle caps classified by the following key parameters: diameter (ranging from 18 mm to 430 mm to accommodate containers from small vials to industrial drums), thread type (standard, high-speed, PCO, BPF), purpose (carbonated drinks, still water, oils, dairy products), design and shape (flat, dome-shaped, sport, with dispenser), opening type (screw-on, flip-top, press-on, combination), presence of first opening control (tamper-evident ring or breakable tape), and material.
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Mold Description
Product Materials:
PP
Mold Material:
S136ESR
Number of Cavities:
24
Glue Feeding Method:
Hot runner
Cooling Method:
Water cooling
Molding Cycle
6.5s
- The mold manufacturing process and product material selection
Specifications for Mineral Water and Beverage Caps
For the mineral water and beverage industry, Ansix Tech offers the following standard cap specifications:
Cap Type Material Neck Finish Seal Structure Thread Weight Application
26mm Closure HDPE 26mm Olive Inner+Outer Plug 3-Start 1.2g Purified/Mineral Water
27mm Closure HDPE 27mm Olive Inner+Outer Plug 3-Start 1.4g Purified/Mineral Water
2925 Closure HDPE 29mm Olive Inner+Outer Plug 3-Start 1.3g Purified/Mineral/Distilled Water
3025 Closure HDPE 30mm Olive Inner+Outer Plug 3-Start 1.85g Purified/Mineral Water
PCO 1880 HDPE/PP 28mm Inner+Outer Plug — 2.8g Water, Juice, Dairy, Energy Drinks
PCO 1881 HDPE/PP 28mm Inner+Outer Plug — 2.3g Bottled Water & Beverages
38mm Smart Cap HDPE 38mm Inner+Outer Plug Double-Start 3.4g 4.5L Water Jugs
48mm Smart Cap HDPE 45mm Inner+Outer Plug Single-Start 6.8g 4L/5L/8L/12L Water Jugs
1.3 Material Selection and Characteristics – The Foundation of Quality
The selection of raw materials is critical to cap performance. Ansix Tech works with industry-leading material suppliers including SABIC, offering one of the broadest portfolios in the industry for caps and closures. Our expertise encompasses:
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Polypropylene (PP): High temperature resistance (up to 120°C), good chemical resistance, strong toughness, resistant to breakage. Widely used for hot-filling bottle caps, food packaging caps, and carbonated beverage closures.
High-Density Polyethylene (HDPE): Strong impact resistance, excellent chemical corrosion resistance, good cold resistance, excellent ESCR (Environmental Stress Crack Resistance). Grades include CC027C/CC027SL for carbonated beverages, tea and juice; CC254 for light carbonated beverages; CC453 for purified water; CC860 for high-speed purified water production. Common for medicine bottle caps, detergent bottle caps, milk bottle caps, and all standard water closures.
Low-Density Polyethylene (LDPE): Good flexibility, strong impact resistance, high transparency. Suitable for squeeze bottle caps and applications requiring flexibility.
For specialized applications, Ansix Tech also works with advanced engineering thermoplastics including PC, ABS, PMMA, and barrier materials for enhanced performance requirements.
Section 2: Hard Power Infrastructure – Building Trust Through Measurable Equipment Capability
The foundation of any high-quality bottle cap mold lies in the precision of its machining equipment. Ansix Tech has invested in world-class manufacturing assets from Mikron, Makino, and Frank to ensure every component meets exacting specifications.
2.1 Mold Manufacturing Equipment – Precision That Delivers Seamless Caps
Five-Axis High-Speed Machining Centers: Our five-axis CNC technology allows the cutting tool to approach the workpiece from any direction in a single setup, eliminating multiple clamping operations and manual intervention.
Customer Value Delivered:
Smoother Parting Lines: Complex freeform parting surfaces are machined with seamless transitions, eliminating the gaps that cause flash—thin, unwanted plastic layers that require costly manual deflashing. Your bottle caps come off the machine ready for secondary processing, saving 5–15 seconds of labor per part.
±0.002mm Accuracy: Multi-cavity molds achieve identical dimensions across every cavity, ensuring that cavity 1 and cavity 48 fit the same bottle neck with zero variation. This means no sorting, no rejects, and seamless integration with your automated capping lines.
Slow Wire EDM: For bottle cap molds requiring 0.03mm micro-holes, narrow grooves, internal splines, or complex undercuts, our wire EDM capabilities prevent thin-wall deformation during machining. The customer benefit is elimination of post-machining corrections, faster mold assembly, and absolute precision in thread-forming geometry.
Automated Machining Ratio of 70%: High automation reduces human error and ensures consistency across mold components, delivering predictable mold quality, faster delivery, and reduced risk of assembly mismatches.
2.2 Injection Molding Machine Fleet – Consistency from First Shot to Last
Ansix Tech operates 260 injection molding machines with clamping forces from 30 to 2,800 tons, covering every product size from miniature caps for personal care products to large closures for industrial containers.
All-Servo Electric Drive Systems: Our machines are equipped with all-servo motor drives that deliver repeatable precision of ±0.1%. This translates into several production runs over weeks or months producing identical bottle cap dimensions. Your capping machinery will seat caps with consistent torque, reducing waste from improper seals. Energy consumption is significantly lower than hydraulic alternatives, directly reducing your per-part electricity cost.
Tonnage Range Application Coverage:
30–150 tons: Small cosmetic caps, pharmaceutical closures, fine-thread precision parts
150–800 tons: Standard beverage bottle caps, sports cap closures, medium-sized packaging components
800–2,800 tons: Large industrial caps, pail closures, multi-cavity high-volume production
2.3 Inspection and Quality Equipment – Data-Driven Validation
Ansix Tech employs comprehensive quality validation equipment including CMM (Coordinate Measuring Machines) and optical imaging systems. Every mold undergoes full-dimensional reporting before delivery, with critical key dimensions achieving CPK ≥1.33—a statistical measure proving that your production process will run with minimal variation and maximum reliability.
Section 3: Mold Manufacturing Core Competitiveness – The Technical Backbone
The quality of the mold directly determines the quality, consistency, and cost-effectiveness of your bottle cap production. Ansix Tech has developed industry-leading expertise across every aspect of mold manufacturing.
3.1 Mold Materials Selection – Guaranteeing Long Service Life
Our mold materials are selected based on production volume, material type, and performance requirements:
Mold Component Material Options Properties Guaranteed Life
Mold Base P20 Good machinability, stable 100,000+ shots
Core/Cavity (Standard) S136, 2344, 2343 High polishability, corrosion resistance 500,000–1,000,000 shots
Core/Cavity (Abrasive) 8407, SKD11, SKD61, DC53 High wear resistance 500,000+ shots with glass-filled materials
High-Polish Applications NAK80 Excellent polishability (Ra≤0.05μm) 500,000+ shots
Thread Cores Beryllium Copper Alloy High thermal conductivity, rapid cooling Specialized application
Customer Value: For glass-filled materials (GF), we guarantee 500,000+ shots; for standard plastics, 1,000,000+ shots. We provide complete material certification reports and heat treatment curves for full traceability.
3.2 Mold Design – Balancing Speed, Quality, and Longevity
Multi-Cavity Configurations: Ansix Tech designs molds with 32, 48, 64, and up to 96 cavities for high-volume mineral water and beverage cap production. Each cavity features independent gate shutoff for consistent fill. The circular or matrix cavity layout ensures balanced melt filling and uniform stress distribution.
Customer Value: More cavities per cycle means higher output per machine hour, significantly reducing your per-part manufacturing cost and improving production capacity for peak demand periods.
Hot Runner Systems – The Key to High-Speed Molding: Our needle valve hot runner systems feature independent temperature control for each cavity, eliminating melt temperature differentials that cause uneven filling. The balanced runner design optimizes gate sizes to ensure simultaneous filling of all cavities, with weight deviation controlled within precision range.
Customer Value: No cold runner scrap—reducing material waste by 15–30%. Automatic gate break during demolding eliminates secondary trimming operations. Consistent cavity filling ensures that all caps produced in the same cycle have identical dimensions and sealing performance.
Advanced Cooling System Design: Cooling is the most critical factor in shortening molding cycles. Ansix Tech employs spiral water channels and conformal cooling designs with water channels positioned close to the cavity surface for rapid, uniform heat exchange. Key features include:
Mold temperature controlled within ±2°C between core and cavity, reducing warpage
Beryllium copper alloy thread cores for accelerated cooling of thin-walled thread areas
Overall cooling time reduced by 20–40% compared to conventional designs
Customer Value: Shorter cooling time directly reduces cycle time, increasing your daily production output without additional machine investment. Uniform cooling eliminates shrinkage, sink marks, and dimensional instability.
Ejection System: For bottle caps with tamper-evident rings, we employ composite mechanisms combining rotary demolding and forced demolding with servo motor-driven rotating thread cores to adapt to short-cycle high-speed molding.
3.3 DFM (Design for Manufacturing) – Solving Problems Before Steel is Cut
Design for Manufacturing is the single most important tool for preventing production issues. At Ansix Tech, DFM is not an afterthought—it is the starting point of every project.
Our DFM Process:
Step 1 – Part Design Review: We analyze your 3D model and provide a comprehensive DFM report covering: draft angle recommendations, wall thickness optimization, gating position selection, parting line placement, shrinkage calculations, ejector pin mark location allowances, surface finish requirements, insert line and ejection positions.
Step 2 – Mold Flow Analysis: Using advanced simulation software, we perform comprehensive mold flow analysis that maps how molten plastic will flow, fill, and cool inside the cavity. This simulation predicts: optimal gate positions, sink mark risks, weld line locations, air trap risks, gas trap locations, cooling efficiency, and warpage potential.
Step 3 – Customer Collaboration: The DFM report is reviewed collaboratively with your engineering team. We identify potential manufacturing issues before any steel is cut, allowing design modifications at the CAD stage where changes cost nothing. This eliminates the traditional "trial and error" approach that leads to costly mold rework.
Customer Value of DFM:
Eliminates costly mold rework: Changes made during design phase cost zero—changes made after mold cutting can cost thousands
Prevents hidden issues: Weld lines, air traps, and sink marks are identified and addressed before production
Accelerates time-to-market: When steel is cut with a validated design, T0 samples are production-ready, not "test-and-fix" samples
Reduces project risk: You know exactly what to expect before investing in tooling
3.4 Mold Manufacturing Process – Engineering Excellence from Start to Finish
Step 1 – Rough Machining: High-speed roughing removes bulk material while maintaining stock allowance for finishing.
Step 2 – Heat Treatment: Components requiring hardness undergo controlled heat treatment with documented temperature curves for material property optimization.
Step 3 – Precision Finishing: Five-axis high-speed machining achieves final dimensions with ±0.002mm accuracy.
Step 4 – EDM (Electrical Discharge Machining): For complex features including threads, fine cavities, and narrow grooves that cannot be machined conventionally.
Step 5 – Assembly & Fitting: All components fitted and assembled with 0.005mm fitting precision at the parting line.
Step 6 – Validation: 2,000-cycle aging test on injection molding machine before delivery to verify performance. Full-dimensional reporting with CMM verification.
Standard Lead Times:
Simple molds: 10 working days
Medium-complexity molds: 25–45 working days
High-cavity complex molds: 45–60 working days
Expedited services available with compressed schedules (please consult for specific timelines)
Section 4: Injection Molding Process Control – Reducing Quality Anxiety
Customers are concerned about visible defects (sink marks, flash), dimensional instability, and batch-to-batch color variation. Ansix Tech has implemented comprehensive process controls to eliminate these concerns.
4.1 Process Standardization – Every Cycle, Identical
All injection molding machines at Ansix Tech are networked, with all molding parameters—temperature, pressure, speed, and timing—locked into the MES system. Only authorized engineers can adjust parameters. Every batch undergoes first-article inspection against customer-approved samples and last-article comparison to ensure no process drift.
Customer Value: Complete traceability and accountability. You can be confident that batch 1,000 will match batch 1. Your capping line will run without torque variation or seal failures.
4.2 Dimensional Stability Control – Eliminating Size Variation
Our approach to dimensional stability includes:
Multi-Zone Mold Temperature Control: Core and cavity temperatures are controlled within ±2°C differential, eliminating warpage and shrinkage variations.
Cavity Pressure Monitoring: We can optionally install in-mold temperature and pressure sensors that provide real-time feedback, enabling closed-loop process control that automatically compensates for viscosity variations.
Ultrasonic Wall Thickness Sensing: Optional capability for real-time wall thickness monitoring with automatic compensation for packing pressure.
Customer Validation Data: For comparable cap products produced across three production runs over one week, critical hole spacing variation is maintained at ≤0.02mm.
4.3 Appearance Quality Standards – Meeting Your Specification
Ansix Tech can achieve rigorous appearance quality standards:
Appearance Requirement Achievable Standard
Transparent parts Bubble-free, flow-mark-free optical clarity
Plated parts No flow marks, no surface defects
High-gloss finishes Surface roughness Ra≤0.2μm
Printed/decorated parts Deformation compensation预留, print registration accuracy ±0.1mm
Color consistency Delta E <0.5 across batches
4.4 Special Material Processing Capabilities
Ansix Tech has extensive real-world production experience with a wide range of engineering thermoplastics: PC/ABS, PC, PPS+40%GF, PEEK, PTFE/PFA, PA6+GF30, PBT, PEI/PPS/LCP, Liquid Silicone Rubber (LSR). We can achieve UL94 V-0 flame rating for electrical enclosures and UV test performance of 3,000 hours without color change for outdoor applications.
4.5 Flash Control – Eliminating Secondary Deburring Operations
We machine parting lines to 0.005mm fitting precision and incorporate self-locking clamping force compensation. The result: flash controlled within 0.03mm across every production batch, eliminating the need for manual deflashing operations.
Customer Value: No labor cost for manual trimming. No lost production time for secondary finishing. Clean caps straight from the machine—ready for assembly or packaging.
Section 5: Quality Assurance and Validation – Protecting Your Brand
Quality assurance at Ansix Tech is built on a systematic, data-driven approach that validates every stage of production.
5.1 Pre-Production Validation
T0 to T3 Sampling: We provide T0 through T3 trial samples, each accompanied by improvement reports documenting changes made and results achieved. Our ability to quickly exchange inserts allows us to validate multiple design iterations without manufacturing an entirely new mold.
Small-Batch Validation: Before full-scale production release, we can produce 100–500 pre-production shots, providing yield rate statistics and CPK analysis. We only proceed to mass production when stability is confirmed.
5.2 In-Process Quality Control
Real-Time Monitoring: MES system continuously monitors machine parameters and alerts operators to any deviation from validated process window.
Statistical Process Control (SPC): Critical dimensions are measured at defined intervals with control charts tracking process stability.
In-Line Inspection Options: High-speed camera inspection systems can be integrated for automated defect ejection of parts with flash, short shots, or dimensional issues.
5.3 Post-Production Quality Verification
AQL Sampling: Final inspection per customer-specified AQL levels.
Seal Integrity Testing: For water and beverage caps, we verify leak-proof performance through vacuum or pressure decay testing.
Torque Verification: Thread torque is measured and documented to ensure compatibility with your capping machinery.
5.4 Mold Maintenance and Support
Spare wear parts (ejector pins, cores) delivered with each mold
Maintenance recommended at every 200,000 cycles
Lifetime repair service at cost-plus pricing
3-year mold structure warranty (excluding natural wear of consumable parts)
Section 6: Full-Service Support – Reducing Your Management Costs
Ansix Tech provides comprehensive support that extends beyond molding to reduce your overall project management burden.
6.1 Early DFM Engagement – Avoiding Costly Mistakes
We provide a mold feasibility analysis report before any commercial commitment, covering draft angle recommendations, wall thickness optimization, gating positions, ejector pin mark location allowances—ensuring that we identify any potential production issues before steel is cut.
6.2 Fast Mold Repair – Minimizing Downtime
With our in-house electrode machining center and EDM workshop, mold repairs typically never leave our facility. Routine weld repair and insert replacement can be restored to production within 24 hours.
6.3 Supply Chain Integration – One-Stop Solution
From material selection through molding and assembly validation, Ansix Tech provides end-to-end service. We can provide assembled caps, printed caps, or caps with integrated liners or seals—reducing your supplier management costs.
Section 7: Differentiated Commitments – Addressing Common Industry Pain Points
Rather than simply stating our capabilities, we provide direct, verifiable commitments that address the most common customer complaints in the industry:
Customer Complaint Ansix Tech Commitment
"Molds break down constantly, disrupting orders." We perform 2,000-cycle aging tests before delivery and provide a 3-year mold structure warranty. We provide spare parts with every mold delivery.
"Excessive flash means high secondary finishing costs." We machine parting lines to 0.005mm fitting precision with self-locking clamping force compensation. Flash is controlled to ≤0.03mm, eliminating manual deflashing.
"Dimensions vary from batch to batch." All machines are MES-networked with ±0.1% repeatability. In-mold temperature and pressure sensors can provide closed-loop control for critical applications.
"Mold repair takes weeks." We have in-house electrode and EDM capabilities. Routine repairs restored within 24 hours.
"Color doesn't match between batches." Delta E <0.5 batch-to-batch with documented material certifications and process parameter traceability.
Section 8: Cost Reduction Strategy – Making Your Product More Competitive
Cost reduction is not a single action at Ansix Tech—it is an engineered outcome derived from multiple strategic interventions across material selection, process efficiency, and production optimization.
8.1 Material Cost Reduction
Through strategic partnerships with major resin suppliers and optimized material selection, we achieve:
Material volume purchasing power directly passed to customers
Multi-cavity hot runner molds eliminating cold runner scrap (15–30% material savings)
Lightweighting opportunities through mold flow analysis—identifying areas where wall thickness can be reduced without compromising strength
Grade selection recommendations balancing performance requirements with cost
8.2 Process Efficiency Gains
Multi-cavity molds (48–96 cavities) maximize output per machine hour, spreading fixed costs across more parts
Optimized cooling reduces cycle times by 20–40%, increasing daily production volume
Automated part handling and ejection eliminates manual labor at the machine
In-mold quality assurance reduces reject rates, saving material and labor
8.3 Tooling Cost Optimization
Modular mold designs allowing cavity replacement rather than complete mold replacement when wear occurs
Standardized component specifications across multiple mold projects to reduce spare parts inventory
DFM optimization reducing mold complexity without sacrificing performance
Local manufacturing at competitive labor rates without compromising quality
8.4 Hidden Cost Elimination
The cost of poor quality is often invisible. Ansix Tech eliminates:
Rework costs: First-time-right molds and validated processes mean no scrap from production issues
Secondary finishing costs: Flash-free molding eliminates manual trimming
Packaging and sorting costs: Consistent dimensions mean no reject sorting required
Logistics expediting costs: Reliable delivery means no air freight for late shipments
Customer complaint handling costs: Quality assurance prevents field failures and returns
Typical Cost Savings Achieved:
Material savings: 15–30% (through hot runner systems and optimized part geometry)
Cycle time savings: 20–40% (through advanced cooling and high-speed injection)
Labor savings: 5–15 seconds per part eliminated by flash-free molding
Scrap reduction: ≤2% reject rates vs industry average of 5–10%
Total delivered cost reduction: 15–35% depending on product and volume
Section 9: Delivery Efficiency – Getting Your Product to Market Faster
Ansix Tech has optimized every link in the supply chain to ensure reliable, rapid delivery.
9.1 Project Timeline Management
Project Phase Standard Duration Expedited Option
DFM Report 3–5 days 2–3 days
Mold Design 5–10 days 3–7 days
Mold Manufacturing 10–45 days (complexity dependent) Compression available
T0 Sampling Upon mold completion —
Validation Runs 2–5 days —
Mass Production Release After customer approval —
9.2 Production Capacity
With 260 injection molding machines, Ansix Tech has substantial installed capacity to handle peak demand. For mineral water caps produced on 48–96 cavity molds, output capacity routinely exceeds millions of pieces per day.
9.3 Supply Chain Infrastructure
Four production bases strategically located across China and Vietnam provide:
Geographic diversity for supply chain security
Proximity to major ports for fast international shipping
Redundant capacity—if one facility has constraints, others can absorb production
Section 10: Industry Experience – The Ansix Tech Advantage
With more than 28 years of production manufacturing experience and over 30,000 molds built to date, Ansix Tech has developed deep industry expertise across the full spectrum of beverage and plastic caps.
10.1 Proven Applications
Industry Cap Types Produced
Bottled Water 26mm, 27mm, 2925, 3025, PCO 1880/1881, 38mm, 48mm caps
Carbonated Beverages CSD caps with high-pressure sealing
Juices & Dairy PCO caps with enhanced barrier properties
Pharmaceuticals Child-resistant closures, metered dispensing caps
Personal Care Flip-top caps, lotion pumps, fine-thread closures
Industrial Chemicals Large-diameter caps with chemical-resistant materials
10.2 Engineering Resources
Over 200 dedicated design engineers continuously developing new mold technologies and processing methods. We actively invest in new capabilities to stay ahead of evolving industry requirements.
Conclusion: Partnering with Ansix Tech for Long-Term Success
At Ansix Tech, a mold is not a block of steel—it is a profit engine for your operation. When we design your mold, we simultaneously plan for the injection molding rheology, venting paths, and thermal balance required to deliver a product that arrives at your production line ready to run—requiring no debugging, producing minimal flash, and delivering long service life.
Our comprehensive approach spans the entire product lifecycle: from material selection through DFM and mold flow analysis, through precision mold manufacturing and process validation, to large-scale production and ongoing support. Every step is designed with one objective: making our customers successful.
We invite you to review a DFM report for one of your existing products to see firsthand how we identify and resolve weld line, air trap, and shrinkage risks before they become production problems.
Contact Ansix Tech to discuss your specific cap requirements and receive a custom proposal with pricing and timeline based on your unique specifications.
Ansix Tech Co Ltd
If you have any plans related to Beverage bottle caps, plastic bottle caps, mineral water bottle caps, standard plastic bottle caps , 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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