87mm Neck Wide-Mouth PET Bottle Preforms for Food Packaging, Beverages, and Cosmetics; PET Bottle Preform Manufacturers
FEATURES
Manufacturing Process
The production process begins with PET resin drying to below 50 ppm moisture content, preventing hydrolysis and IV degradation during molding. The dried resin is melted and plasticized at precise temperatures between 270-295°C, then injected into multi-cavity hot runner molds at controlled injection speeds and holding pressures. Advanced hot runner systems with valve-gate control ensure balanced melt delivery across all cavities, producing uniform preform weight and wall thickness distribution. Following injection, a precisely controlled cooling cycle solidifies the preform before ejection. Each preform undergoes rigorous quality inspection before packaging.
Delivery Efficiency
With 260 injection molding machines across four manufacturing facilities in China and Vietnam, with clamping forces ranging from 30 to 2,800 tons, we maintain substantial production capacity to meet demanding delivery schedules. Standard lead times range from 15 to 30 days depending on order volume and specifications. Expedited production is available for urgent requirements, and dedicated logistics coordination ensures on-time delivery to global destinations.
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Mold Description
Product Materials:
PET PETG
Mold Material:
S136ESR
Number of Cavities:
1*6
Glue Feeding Method:
Hot runner
Cooling Method:
Water cooling
Molding Cycle
22.5s
- The mold manufacturing process and product material selection
Comprehensive quality assurance includes: intrinsic viscosity monitoring held to ±0.02 dL/g for consistent blow molding performance; cavity weight uniformity maintained within ±0.2-0.5%; finished preform moisture content verified below 50 ppm; AA (acetaldehyde) content controlled under 10 ppm for taste-sensitive applications; and 100% dimensional inspection of neck finish critical dimensions including thread OD/ID, tamper band, and sealing surfaces, with Cpk maintained above 1.33.
Competitive Cost Control Advantages
Our vertically integrated manufacturing model eliminates supplier markups on mold production. Optimized multi-cavity tooling (up to 96 cavities per mold) maximizes output per machine hour, reducing unit production costs. Extensive automation lowers direct labor expenses. Strategic raw material procurement through long-term supplier partnerships secures competitive PET resin pricing with reduced price volatility exposure. Lean inventory management minimizes carrying costs while maintaining availability. Energy-efficient all-servo injection molding machines reduce power consumption per part. Material waste is minimized through recycled material management and purging optimization. Combined, these strategies typically achieve 15-30% cost savings compared to industry averages.
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Mold Manufacturing & Injection Molding Material Selection, Smart Manufacturing Integration & Efficiency Improvement, Process Quality Control—Core Value for Customers
Mold Manufacturing & Material Selection
Mold frames are constructed from P20 pre-hardened steel for standard applications, while mold cores and cavities utilize high-performance tool steels including S136, 2344, 2343, 8407, SKD11/SKD61, DC53, M340/4Cr13/9Cr18, NAK80, and H13. Material selection is matched to production volume, part geometry, and resin type—for example, H13 with specialized heat treatment ensures 1 million+ mold cycles for high-volume PET preform production. All mold steels are supplied with full material certification reports and heat treatment curves. Beryllium copper is utilized in strategic cooling-intensive areas where superior thermal conductivity is required.
Smart Manufacturing Integration and Efficiency Improvement
All injection molding machines are networked into an MES (Manufacturing Execution System) with real-time production monitoring. Molding parameters including temperature, pressure, speed, and cycle time are locked within the system and accessible only to authorized engineering personnel. Ultrasonic wall thickness sensors provide real-time feedback during molding, automatically adjusting packing pressure to compensate for wall thickness fluctuations. In-mold temperature and pressure sensors enable closed-loop process control. Automated part handling and conveyor systems link molding cells with downstream inspection and packaging. Cavity imbalance is continuously monitored, ensuring each cavity produces identical preforms. Color and vision inspection systems at point of manufacture instantly detect and reject non-conforming parts. For 48-cavity tools, maximum cavity-to-cavity weight variation is held to ≤0.03g.
Process Quality Control
Statistical Process Control (SPC) monitors key quality characteristics at defined intervals throughout production runs, with control charts tracking trends and detecting out-of-control conditions before defects occur. First-article inspection verifies dimensional conformance before each production run; last-article comparison identifies any end-of-run drift. Cpk (process capability) for critical-to-quality dimensions, including neck finish sealing surfaces and thread geometry, is maintained at ≥1.33. Every T0 to T3 trial molding includes full dimensional reports and defect analysis. Polarized light inspection is used to verify uniform stress distribution and proper orientation across all cavities, preventing downstream blow molding anomalies such as pearlescence or uneven wall distribution.
Core Customer Value
This integrated approach delivers several key benefits: from design to delivery with no external mold supplier coordination, eliminating procurement delays and reducing total lead time by eliminating inter-supplier handoffs. Extended mold life—up to 100,000 cycles for standard materials and 500,000+ cycles for glass-reinforced materials—reduces long-term tooling replacement costs. Reduced quality variation lowers your downstream inspection and blow molding downtime. Faster time-to-market through streamlined design-to-production workflow. Lower total cost of ownership through extended mold service life and reduced rework scrap.
PART 3: Common Weight Specifications for 87mm Neck Wide-Mouth PET Preforms
For 87mm wide-mouth PET preforms, the following weight ranges are standard across the industry, with custom weights available upon request:
Preform Application Typical Weight (grams) Bottle Volume Range
Small food jars / cosmetic jars 50-60g 300-500ml
Standard food jars / condiments 65-80g 500ml-1L
Large food jars / bulk storage 85-110g 1L-2L
Heavy-duty industrial jars 120-160g 2L-5L
Extra-heavy wall / high strength 180-220g 3L-6L+
Reference specifications from industry sources indicate typical wide-mouth preform weights for various neck sizes: 85mm neck at 55g or 68g, 87mm neck with corresponding body weight ranges of approximately 78-90g for mid-volume applications, and larger configurations ranging from 110-200g. For 50mm-80mm neck sizes, weights include 78g, 80g, 85g, 90g, 110g, 120g, 130g, 160g, and 200g. The specific 87mm neck diameter falls within the wide-mouth family (commonly including 70mm, 85mm, 88mm, and 102mm), with recommended preform weights ranging from 40-75g for basic configurations, and larger or thicker wall designs extending above 100g.
Ansix Tech can produce custom weights for any specific bottle volume requirement. Weight selection should consider final bottle dimensions, stretch ratios (axial and hoop stretch), required top-load strength, and desired lightweighting targets. Thinner walls reduce material cost and environmental impact but must maintain sufficient strength for the application. Our engineering team provides weight optimization recommendations based on your specific container design and performance requirements.
PART 4: Comprehensive Manufacturing Solution for 87mm Wide-Mouth PET Preforms
A Strategic Project Blueprint from Ansix Tech
Project Introduction: Redefining Preform Manufacturing for Global Food, Beverage & Cosmetic Packaging
The global packaging industry is undergoing a fundamental transformation. Brands are demanding faster time-to-market, tighter cost control, higher quality consistency, and sustainable manufacturing practices—all while navigating volatile raw material prices and increasing regulatory pressure. For manufacturers of food packaging, beverages, and cosmetics containers, the 87mm neck wide-mouth PET preform represents a critical component category that directly impacts product integrity, filling efficiency, and consumer satisfaction.
At Ansix Tech, we view this project not as a simple tooling order but as a strategic partnership. With over 28 years of specialized experience in PET preform mold manufacturing and injection molding, we have developed a comprehensive production methodology that systematically eliminates quality risks, reduces total cost of ownership, and accelerates market delivery. This document outlines our integrated manufacturing solution structured around five core pillars that translate technical expertise into measurable customer value.
Section 1: Hard-Power Foundation—Building Customer Confidence Through Infrastructure
Precision Mold Manufacturing Equipment
Our mold manufacturing capabilities are designed for one purpose: producing geometrically perfect cavities that run reliably for millions of cycles.
5-Axis High-Speed Machining Centers: We deploy 5-axis simultaneous machining capable of achieving 0.002mm contour accuracy on complex 3D surfaces. What this means for you: Your product's parting lines are smooth and burr-free, eliminating secondary finishing operations and creating aesthetically superior container finishes that enhance brand perception.
Wire EDM with Slow Wire Cut Technology: Our wire EDM systems achieve 0.03μm surface finishes and can machine microfeatures as small as 0.03mm—including tiny cooling channels, fine vent slots, and narrow ejector pin bores. What this means for you: Complex geometry is machined without thin-wall deformation. Cooling performance is optimized across all cavities, reducing cycle times and increasing your daily output.
CNC Graphite Machining & EDM Integration: Dedicated electrode manufacturing ensures EDM precision is maintained without outsourcing. What this means for you: Mold repairs happen within our facility, not across town. When a component requires adjustment, you get your mold back in days, not weeks.
Injection Molding Machine Fleet
Our production capacity spans 260 injection molding machines with clamping forces from 30 tons to 2,800 tons across four facilities in China and Vietnam.
Machine Mix: Premium brands include Japanese (Fanuc, Sumitomo, Toshiba, Nissei), European (ENGEL for standard, Arburg primarily for LSR two-component), and domestic Haitian (primarily for standard PET). What this means for you: We match each preform design to the optimal machine platform—high-speed servo machines for thin-wall applications, high-tonnage presses for large heavy-wall preforms, and precision-controlled units for specialty resins.
All-Servo Electric Drive: Our primary high-precision machines utilize all-servo electric drive technology, delivering ±0.1% shot-to-shot repeatability. What this means for you: Every shot across every cavity is identical. Batch-to-batch variation is virtually eliminated, giving you consistent blow molding performance from the first container to the millionth.
Integrated MES Connectivity: Every machine is networked to our Manufacturing Execution System. Parameters (temperature, pressure, speed, cooling time) are password-locked, accessible only to authorized engineers. What this means for you: Unauthorized adjustments are impossible. Process consistency is maintained regardless of operator changes—your quality does not depend on who is on the shift.
Inspection and Metrology Equipment
Quality is not claimed at Ansix—it is measured, documented, and proven.
CMM (Coordinate Measuring Machines): Full 3D dimensional inspection with micron-level accuracy. Every new mold or repair component is fully measured against CAD data before release. What this means for you: "Guesswork" is eliminated from mold acceptance. You receive a full dimensional report with every mold, so you know exactly what you are getting before the first production run.
Optical Vision Measurement Systems: High-magnification inspection of surface finish, gate vestige, and micro-defects. What this means for you: Visual defects that compromise container aesthetics are caught before production begins. Your containers look flawless on retail shelves.
Performance Metrics: Critical dimensional Cpk maintained at ≥1.33 across all mold deliveries. What this means for you: Statistical proof of process capability. You can confidently integrate our preforms into your automated filling lines without "trial and error" calibration.
Section 2: Mold Manufacturing Core Competitiveness—Delivering Performance Through Precision Metrics
Dimension Technical Specification Value Delivered to You
Mold Life Expectancy Mold frames: P20 pre-hardened. Core/Cavity steel selection includes S136, 2344, 2343, 8407, SKD11/SKD61, DC53, M340/4Cr13/9Cr18, NAK80, H13. Glass-filled resins: 500,000+ cycles. Standard PET: 1,000,000+ cycles. Predictable tooling replacement costs. Lower your total cost of ownership with molds that outlast your production requirements. Full material certification reports provided.
Achievable Tolerances ±0.05mm for standard structural components. ±0.005mm for precision features (threads, sealing lands, gate zones). Containers that seal correctly and fill reliably. Eliminate leak-related customer complaints and product returns.
Mold Types Manufactured Hot runner (standard, reduces material waste). Stack molds (2x efficiency). Two-shot/multi-material molds. High-polish mirror molds (Ra<0.05μm for transparent containers). Flexibility to match your product requirements. Hot runner reduces regrind and material waste. Stack molds double output per machine hour without doubling floor space.
Gate and Runner Strategy Moldex3D flow analysis performed pre-machining—weld line, air trap, and flow balance optimized before steel is cut. No post-mold surprises. Molding parameters are predictable from day one. Your time-to-market is compressed by eliminating trial-and-error mold revisions.
Lead Time Standards Simple molds: 10 days. Medium-complexity: 25-45 days. Expedited service available (specify requirements). Match your product launch timeline, not the other way around.
Material Selection Framework
Different applications demand different steel properties—we guide you to the optimal choice:
Steel Grade Primary Characteristics Best Applications
P20 Pre-hardened, good machinability, cost-effective Standard molds, lower cavitation, prototype tools
S136 / 4Cr13 / 9Cr18 Stainless, corrosion-resistant, high polishability Cosmetic packaging, food contact, transparent containers
H13 / SKD61 High toughness, excellent thermal fatigue resistance High-volume PET preforms, glass-filled materials
NAK80 Superior polishability, dimensional stability High-gloss cosmetic finishes, premium packaging
8407 / DC53 Extreme wear resistance, high compressive strength Abrasive materials, glass-filled resins, extended volume
M340 Premium stainless, highest corrosion resistance Pharmaceutical, high-purity applications
Beryllium Copper (Cooling) Superior thermal conductivity Strategic cooling-intensive zones, cycle reduction
Section 3: Injection Molding Process Control—Eliminating Customer Quality Anxiety
Process Standardization
Every machine is locked into our MES network. Molding parameters (temperature zones, injection pressure profile, hold pressure stages, cooling time, screw speed profile) are established during trial molding and password-protected against operator modification. Only process engineers can adjust parameters, and every change is logged with timestamp and operator ID.
Value delivered: Your quality does not depend on who is running the shift. Third-shift production is identical to first-shift. Overseas production matches domestic. Predictability is built into every shot.
Dimensions Stability Control
Dimensional variation is the enemy of automated filling and sealing. Our approach systematically eliminates it:
Regulated Mold Temperature Control: Mold temperature is managed through zoned control with core and cavity differential held within ±2°C. What this means for you: Warpage and shrinkage are minimized. Your final containers are dimensionally consistent across every cavity, every shift, every production run.
Real-Time Monitoring with Corrective Action: Ultrasonic wall thickness sensors continuously monitor preform dimensions during production. Data feeds back to machine controls, which automatically adjusts packing pressure to compensate for any detected fluctuation. What this means for you: If variation begins to develop, the machine corrects it before a single non-conforming part reaches your line. You do not discover problems—we prevent them.
Empirical Validation: In a recent 48-cavity project for a major beverage brand, maximum cavity-to-cavity weight variation measured ≤0.03g using advanced hot runner flow control technology. Industry standard for traditional molds is >0.15g. What this means for you: 500% improvement in cavity-to-cavity uniformity directly translates to fewer blow molding rejects and faster line speeds.
Appearance and Surface Finish Standards
Different applications require different appearance grades. We clearly define what you receive:
Application Standard Achieved
Transparent containers Bubble-free, flow-line-free, haze-free. Polarized light inspection verifies uniform stress distribution.
Decorated/printed containers Preform geometry includes deformation compensation allowances for printing/finishing processes. Print registration accuracy held to ±0.1mm.
High-gloss premium packaging Surface roughness Ra ≤0.2μm achieved through high-polish mirror mold finishes.
Specialty Material Processing Capabilities
Beyond standard PET, Ansix Tech has production-proven experience with a broad portfolio of engineering resins:
Material Category Specific Examples Key Considerations
Engineering blends PC/ABS, PC Impact strength, thermal resistance
High-performance thermoplastics PPS+40%GF, PEEK, PEI/PPS/LCP High-temperature applications, chemical resistance
High-strength filled resins PA6+GF30, PBT Mechanical property enhancement via glass reinforcement
Specialty fluoropolymers PTFE/PFA Extreme chemical resistance, non-stick
Liquid silicone rubber LSR (2-component on Arburg machines) Medical, baby care, food contact applications
For standard PET applications:
IV range: 0.72-0.80 dL/g for water bottles (higher IV for carbonated beverage strength)
Moisture control: <50 ppm, with real-time monitoring
AA control: <10 ppm for taste-sensitive beverages
What This Section Delivers for You
By the time a preform reaches your dock, every critical variable has been controlled, monitored, documented, and verified. You do not need to "test" our preforms to see if they work—you can integrate them directly into your blow molding line with confidence. This eliminates your incoming inspection costs, reduces your blow molding scrap rate, and protects your brand reputation from downstream quality failures.
Section 4: Full-Process Service—Reducing Your Management Cost
Early Intervention Through DFM
Before we quote your project, before we cut any steel, we provide a comprehensive Design for Manufacturability (DFM) report. Our DFM goes far beyond simple feasibility assessment:
DFM Component What We Analyze Value to You
Draft angle recommendations Optimal release angles for each feature to prevent sticking Eliminates ejection-related defects before tooling is built
Wall thickness optimization Uniform thickness distribution, transition zone design Prevents sink marks, voids, and warp without costly post-mold rework
Gate location analysis Weld line, air trap, and flow front simulation Predicts and eliminates cosmetic defects before they occur
Ejector pin mark positioning Location and depth recommendations You approve mark location—no surprises on visible surfaces
Shrinkage compensation Material-specific shrinkage prediction Final parts match your CAD dimensions without tolerance renegotiation
Trial Molding and Sample Provision
One mold, one project—but we treat every phase as its own validation event:
T0 (First Trial): Mold mounted and run in controlled conditions. All cavities evaluated. Molding parameters documented.
T1 (First Optimization): Parameter adjustments based on T0 findings. Wall thickness, weight balance, and dimensional conformance verified.
T2 and T3: Additional refinement cycles. Every trial includes full dimensional reports, weight data, and defect analysis.
Value delivered: By the time you receive samples for customer approval, the mold has already been through multiple optimization cycles on our floor, not yours. Your time-to-market is accelerated by eliminating debugging time at your facility.
Small-Batch Pre-Production Validation
Before committing to full-scale production, we offer 100 to 500-shot pilot runs that are statistically analyzed for yield rate and Cpk. Only when capability is confirmed do we proceed to full production.
Value delivered: You know exactly what your production capability will be before your packaging line is scheduled. No "startup surprises," no unplanned downtime, no emergency material substitutions.
Maintenance, Spare Parts, and Repair Services
Complete spare parts kit (ejector pins, core pins, wear plates) delivered with every mold.
Preventive maintenance scheduled every 200,000 cycles.
Lifetime repair service at cost—no markup for emergency repairs.
In-house repair capability: our EDM and machining departments handle all mold repairs, eliminating weeks of shipping and third-party coordination.
Value delivered: When a mold needs attention, we respond in hours, not days. Your production line stays running.
Section 5: Differentiated Commitments—Direct Answers to Common Customer Pain Points
What Customers Commonly Complain About in the Industry Ansix Tech's Direct Commitment
"Our molds need constant repairs. Every repair means lost production days." Every mold undergoes 2,000-cycle accelerated aging test before delivery. We provide a written wear report documenting expected service life. Three-year structural warranty (excluding normal consumable wear like ejector pins).
"Flash is a constant battle. De-flashing adds labor cost and creates contamination risk." We machine parting surfaces to 0.005mm fit accuracy. Our molds incorporate self-locking clamp force compensation to maintain zero-flash performance even as machines warm up. Actual flash controlled to <0.03mm—no manual deflashing required.
"Every batch has different dimensions. We waste hours recalibrating our blow molding line." Our MES locks parameters permanently. Ultrasonic sensors provide real-time feedback and automatic packing pressure compensation. In-mold temperature and pressure sensors enable closed-loop process control. Batch-to-batch variation is virtually eliminated.
"When a mold needs repair, we lose weeks waiting for quotes and machining slots." We self-manufacture all electrodes and EDM components. Standard repairs completed within 24 hours. Routine maintenance performed on your schedule.
"We are not sure if the preform design will work for our bottle until we test it—but testing means building expensive tooling." Our DFM process includes mold flow analysis specifically for your bottle geometry. We can run small-scale trials with prototype tooling before full mold construction, validating design without committing to full tooling costs.
The Ansix Difference: Molds Are Not Steel—They Are Money-Printing Machines
We design every mold with four non-negotiable priorities in mind:
Running stability in your production environment: We design for "plug and play" installation—no debugging, no parameter hunting, no unplanned downtime.
Optimized venting paths: Proper venting prevents trapped air from causing burn marks or incomplete fills, reducing scrap and improving cycle times.
Thermal balance: Balanced cooling across all cavities ensures consistent part dimensions and minimizes warpage.
Maintenance accessibility: Every wear component is accessible without mold disassembly where possible, with clear documentation of service intervals.
Summary: Translating Technical Expertise into Customer Value
Throughout this document, technical specifications have been presented not as abstract engineering claims but as direct answers to customer questions: "What does this do for my business? How much cost does it save? How much risk does it eliminate?"
The table below summarizes every technical capability we have discussed and the corresponding customer benefit:
Ansix Tech Technical Capability Corresponding Customer Benefit
0.002mm machining accuracy on 5-axis mills Smooth parting lines—no deflashing labor cost
All-servo electric injection machines with ±0.1% repeatability Zero batch-to-batch variation—no blow molding line recalibration
MES-locked parameters with engineer-only access Process consistency independent of shift—no operator-caused defects
Cpk ≥1.33 on critical dimensions Statistical proof of capability—confident integration without inspection
1,000,000+ cycle mold life Predictable long-term tooling cost—no unplanned replacement expenses
Multi-cavity weight variation ≤0.03g (48 cavities) 5× better uniformity than industry average—less scrap, higher line speed
Hot runner with sequential valve-gate control Balanced fill—no weight variation, no stringing, consistent crystallinity
Conformal cooling design with ≤±2°C cavity temperature differential Faster cycles, less warpage, uniform mechanical properties
Ultrasonic wall thickness sensor with auto-correct Real-time quality assurance—problems fixed before they reach your line
In-house mold repair and EDM 24-hour repair turnaround—no weeks-long third-party delays
DFM with full mold flow analysis No post-mold surprises—your time-to-market is accelerated
260 machines, four factories, 30-2800 tons Capacity to match your volume—seasonal peaks are not a problem
Final Invitation
Ansix Tech Co Ltd
If you have any plans related to 87mm Neck Wide-Mouth PET Bottle Preforms for Food Packaging, Beverages, and Cosmetics; PET Bottle Preform Manufacturers , 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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