48mm Neck Pulsating Large-Diameter PET Preforms - Preform Production Factory Using Virgin Materials
FEATURES
Parameter Specification
Neck Diameter 48mm (PCO/PCO1881/1810 compatible)
Neck Thread Precision-molded, leak-proof sealing
Material 100% Virgin PET, FDA-approved food-grade
Intrinsic Viscosity 0.80–0.84 dl/g (adjustable per application)
Acetaldehyde (AA) Level ≤1.0 μg/g (industry-leading low)
Clarity Crystal transparent
Application Volume 4.5L, 5L, 10L water/oil/food bottles
Temperature Range -20°C to +100°C
Manufacturing Process: From Virgin Resin to Finished Preform
The two-stage manufacturing process is the industry standard for high-volume PET packaging production.
Stage One – Injection Molding: Virgin PET resin pellets are dried to below 50 ppm moisture and fed into a precision injection molding machine equipped with specialized preform molds (typically 16 to 144 cavities).The resin is melted at controlled temperatures (260–280°C) and injected into water-cooled cavities under high pressure. Mold cooling systems—designed for turbulent flow at minimum flow rates—achieve uniform, fast cooling that minimizes cycle time while producing superior preform quality.
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Mold Description
Product Materials:
PET PETG
Mold Material:
S136ESR
Number of Cavities:
16
Glue Feeding Method:
Hot runner
Cooling Method:
Water cooling
Molding Cycle
30.5s
- The mold manufacturing process and product material selection
Stage Two – Stretch Blow Molding: Finished preforms are reheated and stretch blow molded into final bottle shapes using specialized blow molding machinery, achieving uniform material distribution, excellent transparency, and structural strength.
Key Manufacturing Capabilities:
Multi-cavity high-efficiency molds (up to 192 cavities)
Advanced hot runner systems with valve gate technology
Automated post-mold cooling systems
Real-time process monitoring and closed-loop quality control
Delivery Efficiency
Ansix Tech operates four production facilities across China and Vietnam, with a total of 260 injection molding machines ranging from 30 to 2,800 tons of clamping force.The company's integrated manufacturing ecosystem—combining high-precision machining centers, automated inspection systems, and efficient material handling—delivers exceptional lead times:
Mold manufacturing: Standard lead time 25–45 days; expedited options available for urgent projects
Preform production: Capable of producing millions of preforms weekly per facility
Sample delivery: T0 samples available within 21 days of design freeze
Mass production: Up to 20,000 units per hour per production line
The company's just-in-time delivery and safety protocols ensure reliable, on-time shipment to global customers.
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Quality Assurance System
Quality is built into every stage of the manufacturing process through:
Certified Management Systems: ISO9001, ISO14001, IATF16949, ISO13485, BSCI certifications
Complete In-House Laboratory: Equipment for testing AA levels, intrinsic viscosity, color clarity (L/b values), moisture content, and dimensional accuracy
Real-Time Inspection Systems: Automated vision systems for 100% inspection of critical dimensions, thread integrity, and surface defects
Statistical Process Control (SPC): Continuous monitoring with CPK ≥1.33 for all critical-to-quality parameters
Traceability: Full material lot traceability from resin receipt to finished preform shipment
All preforms undergo rigorous end-of-line inspection for flash, tail length, gate crystallinity, wall thickness uniformity, and dimensional accuracy before packaging.
Most Competitive Cost Control
Ansix Tech delivers exceptional value through systematic cost optimization at every level:
Raw Material Sourcing: Strategic partnerships with major PET resin suppliers (Indorama, Wankai, Sanfame) enable competitive pricing on 100% virgin food-grade PET resin
Energy Efficiency: All-electric servo-driven injection molding machines consume less than 200 Wh per kg of processed PET, significantly reducing operating costs
High Cavitation Molds: 48–144 cavity configurations dramatically reduce per-unit production costs through economies of scale
Cycle Time Optimization: Advanced cooling system design reduces cooling time (normally 40–60% of total cycle) by 15–25%
Automation: Automated material handling, part ejection, and packaging systems minimize direct labor costs
Material Efficiency: Hot runner valve gate systems eliminate runner waste; automated preform sampling reduces reject rates
Reduced Transport Costs: Strategic global facility locations minimize shipping distances and import duties
Lean Manufacturing: Continuous improvement programs and waste reduction initiatives maintain stable, low-cost operations
Core Value for Clients: What Ansix Tech Solves
Pain Point 1: Lengthy Mold Development Cycles
Ansix Tech provides comprehensive DFM (Design for Manufacturing) analysis within 7 days of project kickoff—before any steel is cut.The DFM report identifies and resolves potential molding issues (weld lines, gas traps, shrinkage risks, ejection interference) upfront, eliminating costly rework and accelerating time-to-market by 20–30%.
Pain Point 2: Inconsistent Preform Quality Causing Bottle Defects
Through integrated mold design, precision manufacturing, and closed-loop injection control, Ansix Tech guarantees shot-to-shot weight variation below 0.025%, ensuring uniform bottle wall thickness, excellent clarity, and minimal carbonation loss for beverage applications.Near-zero AA levels extend product shelf life and maintain taste integrity.
Pain Point 3: High Total Cost of Ownership (TCO)
Ansix Tech reduces TCO through extended mold life (guaranteed 4–5 million shots for hardened steel molds), minimal energy consumption (below 200 Wh/kg), reduced scrap rates (<0.5%), and simplified maintenance with locally stocked spare parts.
Pain Point 4: Long Lead Times and Production Bottlenecks
With 260 injection molding machines across four manufacturing bases, Ansix Tech offers scalable production capacity that matches demand fluctuations. Expedited mold manufacturing options reduce lead times by up to 50% for urgent projects.
Pain Point 5: Regulatory and Material Compliance Risks
Every preform is manufactured exclusively from 100% virgin, FDA-approved, food-grade PET resin with complete material certifications and lot traceability. The company holds ISO9001, ISO13485 (medical), IATF16949 (automotive), and BSCI certifications, supporting global export requirements.
PART TWO: Standard Gram Weights for 48mm Neck PET Preforms
Ansix Tech manufactures 48mm Neck PET Preforms in a comprehensive range of standard gram weights covering a wide spectrum of bottle capacities and applications.
For standard 48mm neck configurations compatible with PCO and PCO1881 finishes, the available gram weight options include: 90g, 106g, 116g, 121g, 130g, 143g, 170g, and 200g.
Typical bottle volume-to-weight relationships for 48mm neck preforms:
Gram Weight Typical Bottle Capacity Primary Application
80g 5L Edible oil, water
90g 1 gallon (3.8L) Water, juices
106g 5L–6L Mineral water
116g 6L–7L Bulk water
121g 7L–8L Beverages
130g 8L–9L Water, edible oil
143g 9L–10L Large water containers
170g 10L–12L Food-grade containers
200g 12L–15L Industrial packaging
Preforms weighing 260g to 485g are also available for extra-large 10–25 liter containers for food and non-food segments.
Customization Options: Gram weight can be customized based on specific bottle design, wall thickness requirements, pressure resistance needs, and regulatory compliance (FDA, EU Food Contact). Material options include crystal clear, tinted colors, and UV-resistant formulations.
Neck Finish Compatibility: 48mm neck preforms are compatible with industry-standard capping systems including PCO, PCO1881, and wide-mouth closure designs. This standardization ensures seamless integration with existing filling lines and reduces capital investment requirements.
PART THREE: Comprehensive Manufacturing Solution for 48mm Neck Pulsating Large-Diameter PET Preforms (2500+ words)
An Executive Summary of Strategic Partnership
To our valued clients,
At Ansix Tech, we don't design and manufacture molds; we engineer your success. Every mold we design, every material we select, and every process we optimize is intentionally aligned with solving your specific business challenges. This document outlines how we transform technical expertise into measurable client value—reducing your costs, minimizing your risks, and accelerating your time to market.
Section I: Transparent Hard Power — Equipment Foundations That Build Trust
1.1 Mold Manufacturing Equipment
Five-Axis High-Speed Machining Centers
We operate state-of-the-art five-axis CNC machining centers capable of machining complex contours with 0.002mm positioning accuracy. What this means for you: Your preform's parting lines are smooth, flash-free, and require no secondary finishing operations. No expensive post-processing, no scrap due to burrs, no delayed shipments waiting for rework.
Slow Wire EDM (Electrical Discharge Machining)
Our slow wire EDM systems cut fine micro-holes and narrow slots down to 0.03mm with exceptional precision. Your value: When you need intricate features—thin-walled neck geometries, undercuts, or specialized gate designs—we deliver them right the first time. No deformation, no rework, no budget overruns.
Coordinate Measuring Machines (CMM) and Optical Inspection Systems
Every mold we build undergoes full dimensional inspection before leaving our facility. Critical dimensions are certified with CPK ≥ 1.33—statistical proof that your mold will produce consistent, high-quality parts shift after shift, day after day.
Equipment Type Capability Client Value
5-Axis High-Speed Machining Center 0.002mm accuracy Smooth parting lines, no flash
Slow Wire EDM 0.03mm feature size Precision fine details
CMM + Optical Inspection CPK ≥1.33 certification Guaranteed dimensional consistency
1.2 Injection Molding Machine Fleet
We operate 260 injection molding machines across four production bases, with clamping force ranging from 30 tons to 2,800 tons.Why this matters to you: Any preform size you need—from lightweight 5g units to heavy-duty 200g containers—we have the precise machine for the job. No compromise, no outsourcing, no excuses.
All-Electric Servo-Driven Machines
Our machine fleet includes Japan's Fanuc, Sumitomo, Toshiba, Nissei, Engel, and Germany's Arburg—each equipped with all-electric servo drive systems. Client value: Shot-to-shot repetition accuracy of ±0.1% means every single preform matches the first. When you run our preforms through your stretch blow molding line, you get consistent bottle wall thickness, uniform color, and zero surprises.
Machine Connectivity and MES Integration
Every machine is networked to our Manufacturing Execution System (MES). All molding parameters—temperature, pressure, injection speed, cooling time—are locked and can only be adjusted by authorized engineers. Risk eliminated: No unauthorized operator changes, no batch-to-batch variation, no hidden process drift. You receive traceable process data with every shipment.
Section II: Mold Manufacturing Core Competencies — Measurable Performance Metrics
2.1 Mold Life Guarantee
Steel Material Application Guaranteed Shots
P20 (Pre-hardened) Standard preforms 500,000–1,000,000
S136 / 420SS (Stainless) Food-grade, corrosion-resistant 1,000,000–2,000,000
H13 / 2344 / 8407 (Hot Work) High-temperature, high-wear 2,000,000+
SKD11 / DC53 Abrasive materials (glass-filled) 500,000 minimum
NAK80 Mirror finish, optical clarity 1,000,000+
Your value: Predictable mold replacement schedules. No unexpected downtime. We provide certified material certifications and heat treatment curves with every mold.
2.2 Achievable Tolerances
Standard structural features: ±0.05mm
Critical neck thread dimensions: ±0.02mm
Precision sealing surfaces: ±0.005mm (where required)
Client benefit: Your preform necks seal perfectly with standard caps. No leakers. No customer complaints. No returns.
2.3 Mold Types We Deliver
Mold Type Production Benefit Client Value
Hot Runner (Valve Gate) Zero runner waste Raw material savings: 5–15%
Stack Mold (2-layer/4-layer) 2–4X cavities in same machine footprint Doubles production without new machine purchase
High Cavitation (48–144 cavities) Maximum per-cycle output Lowest per-unit cost
2.4 Gate System Design Excellence
Through advanced Moldex3D CAE flow simulation, we predict weld line locations, gas trap risks, and fill imbalances before cutting any steel.What you avoid: Short shots, weak weld lines, visible gas burn marks, and premature gate crystallization. Your bottle looks flawless and performs perfectly.
2.5 Standard Lead Times
Project Complexity Standard Lead Time Express Option
Simple mold (1–8 cavities) 10–15 days 7 days
Medium complexity (8–32 cavities) 25–35 days 20 days
High complexity (48+ cavities) 35–45 days 28 days
Our express guarantee: Expedited options include 24-hour on-site engineering, parallel processing, and prioritized production—without skipping any validation steps. Quality is never sacrificed for speed.
Section III: Injection Molding Process Control — Eliminating Quality Anxiety
3.1 Addressing Your Pain Points
Common client complaint: "Our preforms shrink and warp inconsistently."
Ansix solution: We design molds with multi-zone independent temperature controllers, maintaining core-cavity temperature differentials within 2°C. Mold temperature uniformity eliminates residual stresses and differential shrinkage.
Track record: For a major bottled water brand requiring 10 million preforms weekly, we achieved run-to-run dimensional variation of ≤0.02mm over 12 months of continuous production.
Common client complaint: "We get flash on every batch and spend hours deburring."
Ansix solution: We machine parting lines to 0.005mm fit precision and employ self-locking clamp force compensation. Flash is controlled to ≤0.03mm—invisible to the naked eye, requiring zero manual finishing.
Cost saved: Eliminated manual deburring = 0.02perpartsaved.At10millionpartsannually,that s200,000 direct savings.
Common client complaint: "Every batch has different dimensions; we can't maintain CPK."
Ansix solution: Every machine is equipped with ultrasonic wall thickness sensors providing real-time feedback to closed-loop process controllers. We adjust packing pressure dynamically to maintain consistent wall thickness. We can also embed in-mold temperature and pressure sensors for full closed-loop control.
Consistency proven: Third-party audits show our dimensional CPK consistently exceeds 1.33 for all critical preform dimensions.
3.2 Appearance Grade Standards
Requirement Achieved Standard
Transparent parts No bubbles, no flow marks, no haze
UV-stabilized outdoor preforms No yellowing after 3,000 hours UV testing
Crystal clarity Light transmission ≥ 90%
3.3 Capability with Special Materials
We have extensive production experience across the full spectrum of engineering thermoplastics: PC/ABS, PC, PPS+40%GF, PEEK, PTFE/PFA, PA6+GF30, PBT, PEI, PPS, LCP, and Liquid Silicone Rubber (LSR).For PET preform applications, we specialize in:
High-viscosity copolyester PET for thick-wall preforms
Standard bottle-grade PET with IV 0.80–0.84 for beverage applications
rPET-compatible formulations (up to 100% recycled content)
UV-resistant and color-stable formulations
Flame retardancy: UL94 V-0 rating available
Chemical resistance: Compatible with food oils, acids, and cleaning agents
Section IV: Full-Stream Service Model — Reducing Your Management Burden
4.1 Early-Stage DFM (Design for Manufacturing) Engagement
Before we cut any steel, we deliver a comprehensive DFM report that includes:
Draft angle recommendations (optimized for clean ejection without drag marks)
Wall thickness optimization (balanced material flow and cooling)
Gate location and quantity (based on flow simulation)
Ejector pin mark locations (agreed in advance so marks never interfere with labeling)
Venting locations (eliminating gas traps)
Shrinkage compensation calculations (PET shrinkage 1.2–2.0%)
Your value: You sign off on the DFM before we manufacture. No surprises. No "we didn't know that wouldn't work." No costly mold modifications after delivery.
4.2 Mold Flow Analysis (CAE Simulation)
We use Moldex3D, one of the world's most advanced CAE simulation platforms. The software predicts complex phenomena including:
Fiber orientation in reinforced materials
Weld line locations and severity
Air trap positions
Cooling efficiency across all cavities
Warpage prediction under actual processing conditions
Risk eliminated: What used to require 3–4 physical mold trials now requires zero. We resolve all molding issues virtually, saving you 4–6 weeks of trial cycles and
15,000–30,000 in wasted material and machine time.
4.3 Sample Validation Protocol (T0 to T3)
Stage Activity Deliverable
T0 First mold trial on customer-designated machine 10–25 sample preforms + run report
T1 Optimization based on T0 findings 50–100 samples + improvement report
T2 Validation of optimized parameters 200 samples + dimensional CPK analysis
T3 Production-ready sign-off Final approval samples + full documentation
Your value: You know exactly what to expect at every stage. No hidden delays. Transparent progress tracking.
4.4 Low-Volume Pre-Production Validation
Before committing to full mass production, we offer 100 to 500 pre-production sample preforms at your actual production machine. We run these samples and provide you with:
Yield rate (target >99.5%)
CPK analysis on all critical dimensions
Visual inspection report (flash, gate vestige, surface quality)
Weight consistency data
Risk eliminated: You validate before you scale. No costly production runs of defective parts. No wasted resin. No disappointed customers.
4.5 Mold Maintenance and Spare Parts Program
Service Scope
Spare parts kit Ejector pins, core pins, wear plates delivered with mold
200,000-cycle maintenance Full inspection, cleaning, lubrication, minor repairs
Lifetime repair Permanent repair services at cost + labor
Response time 24 hours for critical repairs
3-Year Mold Structure Warranty: We guarantee the structural integrity of your mold for 3 years against defects (normal wear of consumables excluded).
Section V: Differentiated Commitments — Solving Specific Client Challenges
Below is our direct commitment against common client frustrations:
Common Client Complaint Ansix's Explicit Guarantee
Frequent mold repairs disrupt production "We perform 2,000-cycle accelerated wear testing before delivery and provide a wear report. Plus, 3-year structure warranty."
Excessive flash increases post-processing costs "We machine parting lines to 0.005mm fit precision with self-locking clamp force compensation. Flash ≤0.03mm—zero manual deburring required."
Dimensions change every batch "Ultrasonic wall thickness sensors + real-time closed-loop packing pressure control + in-mold sensors. Dimensional CPK ≥1.33 guaranteed."
Mold repair takes weeks "In-house electrode manufacturing + EDM + CNC. Standard repair turnaround: 24 hours. Most repairs done without leaving our facility."
Mold cost is too high "Our integrated DFM+manufacturing+validation reduces rework cycles by up to 70% compared to non-integrated suppliers. Lower total cost, faster delivery."
Cost Savings Quantified
Based on audits of 50+ completed projects:
Cost Category Typical Savings Source of Saving
Raw material 5–15% Hot runner valve gate eliminates runner waste
Manual finishing $0.01–0.03 per part Zero-flash molding eliminates deburring
Rejected parts 80% reduction Closed-loop control reduces defect rate from 2–3% to <0.5%
Machine downtime 50% reduction Quick-change mold bases, on-site spare parts
Energy consumption 15–25% All-electric servo machines
Why Choose Ansix Tech as Your Partner
28+ Years of Injection Molding Excellence: Since 1998, we have delivered precision-engineered molds and production services to clients across beverage, food, medical, automotive, consumer goods, and industrial sectors.
Global Manufacturing Footprint: Four production bases (China: Shenzhen, Dongguan, Hunan; plus Vietnam)—260 injection molding machines, 200,000+ square meters.
Certified Quality Systems: ISO9001 (general quality), ISO13485 (medical devices), IATF16949 (automotive), ISO14001 (environmental), BSCI (social compliance).
Industry 4.0 Intelligent Manufacturing: Fully integrated digital ecosystem from design (CAD/CAE) through manufacturing (CNC/EDM) to production (MES-connected injection molding machines).
Specialized in Preform Molds and Production: Unlike general-purpose mold makers, we specialize exclusively in preforms for PET, PP, and engineered resins. Our engineers understand the nuances of neck finish precision, gate crystallinity control, and post-mold cooling optimization.
Concluding Statement
Dear valued client,
At Ansix Tech, we don't see a mold as a piece of steel. We see it as your printing press—your gateway to reliable, high-volume, profitable production. Every decision we make—from steel selection to gate placement to cooling circuit design—is engineered with your production line in mind. Our molds arrive at your facility ready for trouble‑free installation: minimal debugging, zero flash, predictable cycle times, and guaranteed tool life.
We invite you to experience the Ansix difference:
Transparent: We show you everything—DFM reports, material certifications, inspection data.
Accountable: We commit to explicit guarantees—dimensional CPK, flash limits, delivery dates.
Value-driven: We align our success with yours—lower TCO, faster time to market, reduced risk.
We would welcome the opportunity to review an existing product with you in a full DFM analysis session. You will see firsthand how we proactively address every molding risk—weld lines, gas traps, shrinkage, warpage—before they ever reach your production floor.
Contact us to begin your next preform project with a partner who delivers measurable results.
Ansix Tech | Precision Engineering | 28+ Years of Excellence
Ansix Tech Co Ltd
If you have any plans related to 48mm Neck Pulsating Large-Diameter PET Preforms - Preform Production Factory Using Virgin Materials , 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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