43mm Neck 35g Weight Health Supplies Toothpaste Transparent Frosted Tube Preform Cosmetic Bottle PET Preform Tube
FEATURES
Core Customer Value: Tooling, Material Selection, Smart Manufacturing & Process Quality
Mold Manufacturing & Material Selection for Injection Molding
At Ansix Tech, mold manufacturing begins with strategic material selection based on application requirements and production volume expectations. For the 43mm neck 35g preform, the mold design incorporates:
Steel Selection: P20 pre-hardened steel for standard applications; S136 or H13 stainless steel for high-volume production (up to 500,000–1,000,000 shots), providing exceptional wear resistance, corrosion resistance and thermal stability under sustained high-temperature high-pressure injection environments.
Surface Treatment: Nitriding and chrome plating treatments enhance mold durability and ensure mirror-polished cavity surfaces (Ra < 0.05μm), critical for achieving the transparent frosted finish and preventing part sticking.
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Mold Description
Product Materials:
PET PETG
Mold Material:
S136ESR
Number of Cavities:
1*16
Glue Feeding Method:
Hot runner
Cooling Method:
Water cooling
Molding Cycle
12.5s
- The mold manufacturing process and product material selection
Smart Manufacturing Integration & Efficiency Improvement
Ansix Tech's smart manufacturing ecosystem connects injection molding machines to a central MES with real-time data acquisition:
Process Parameter Locking: All molding parameters (temperature, pressure, injection speed, cooling time) are locked in the MES and accessible only by authorized engineers. Real-time SPC charts track critical-to-quality dimensions with automatic alerts when parameters drift beyond control limits.
Ultrasonic Wall Thickness Monitoring: In-mold sensors provide real-time feedback on wall thickness distribution. The system automatically adjusts packing pressure and holding time to maintain ±0.02mm dimensional stability across continuous 24/7 production runs.
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Process Quality Assurance
Ansix Tech employs a multi-layered quality assurance framework:
Stage Control Method Customer Benefit
Pre-production DFM analysis using Moldflow Eliminates weld lines, gas traps, sink marks before tooling
First Article CMM inspection + full dimensional report Ensures all dimensions conform to print
In-process Vision inspection + SPC charts Catches non-conformances immediately, zero defect shipments
Outgoing Visual + dimensional audit per AQL Guarantees 100% conforming product
Key Value to Customers: Ansix Tech transforms technical capabilities into tangible customer benefits—reducing scrap rates from typical 3–5% to below 0.5%, eliminating secondary deflashing operations, and ensuring every cavity produces identical preforms interchangeable in downstream blow molding equipment.
Part 3 – Common PET Preform Grammages for 43mm Neck
Ansix Tech manufactures the 43mm neck PET preform in a wide range of standard and custom grammages to match various bottle volume requirements. Below are the most commonly produced grammages for 43mm neck finish preforms:
Preform Weight (grams) Typical Bottle Volume (ml) Primary Applications
20g – 25g 100 – 250 ml Travel-size toothpaste tubes, cosmetic samples, small health supply bottles
30g – 35g 250 – 500 ml Standard toothpaste tubes, cosmetic lotion bottles, mouthwash containers
40g – 50g 500 – 800 ml Family-size toothpaste, shampoo bottles, liquid soap dispensers
55g – 70g 800 ml – 1.2 L Large health supplies, kitchen products, industrial containers
80g – 120g 1.2 L – 2.5 L Bulk health supplies, refill bottles, institutional packaging
30mm—63mm neck finishes also available with grammages from 12g to 300g depending on bottle capacity requirements. For the specific 43mm neck 35g weight configuration, the recommended bottle volume range is 250–500 ml, ideal for toothpaste, cosmetic lotions, and daily health supplies packaging.
Part 4 – Comprehensive Manufacturing Solution for 43mm Neck 35g PET Preform
I. Hard Power Foundation – Equipment Infrastructure That Builds Customer Trust
Mold Manufacturing Equipment: Ansix Tech operates advanced 5-axis high-speed machining centers capable of machining complex curved surfaces with 0.002mm precision. This ensures your preform's parting lines are smooth and flash-free. The facility also utilizes slow-moving wire EDM capable of producing 0.03mm fine holes or narrow slots while preventing thin-wall deformation. Additional equipment includes precision surface grinders and EDM spark erosion machines with electrode machining centers maintained in-house—ensuring mold repairs and modifications are completed without external lead time delays.
Injection Molding Machine Fleet: Ansix Tech maintains a total of 260 injection molding machines with clamping forces ranging from 30 tons to 2800 tons, covering the complete spectrum of preform sizes and shot weight requirements. The machine fleet includes world-class brands:
Japanese machines: Fanuc, Sumitomo, Toshiba, Nissei
European machines: Engel, Arburg (primarily for LSR two-component molding)
Domestic machines: Haitian, Tay-ching
All-servo electric drives deliver stable repeatable precision at ±0.1%, ensuring every shot across every cavity matches identically during high-volume batch production.
For the 43mm neck 35g preform, a 250–350 ton machine with 48–72 cavities is recommended, delivering an hourly output of approximately 12,000–18,000 preforms with cycle times optimized to 10–14 seconds per shot.
Inspection & Testing Equipment: CMM (Coordinate Measuring Machine) and optical vision inspection systems are standard. Every mold shipped undergoes a complete dimensional report comparison against the design model, with critical dimensions achieving CPK ≥ 1.33—this means your production line runs without unexpected dimensional surprises.
Customer Value Translation: When we say "0.002mm machining accuracy" and "±0.1% shot-to-shot repeatability," what this means for you is: no flash to deburr, no undersized threads that leak, no oversized necks that reject caps. Our equipment capability eliminates the hidden costs of post-molding operations.
II. Mold Manufacturing Core Competitiveness – Measurable Performance Metrics
Customers care about four things: mold life, achievable tolerances, mold type flexibility, gate design optimization, and delivery standards. Here is how Ansix Tech delivers measurable value across each dimension:
Mold Life Guarantee:
Mold Steel Grade Applications Guaranteed Shots
P20 Standard preforms, low-volume 500,000+ shots
S136 / 2344 / 2343 / 8407 High-volume, wear-resistant 1,000,000+ shots
SKD11 / DC53 High-abrasion, glass-filled 500,000+ shots
H13 / NAK80 Medical, cosmetic high-gloss 1,000,000+ shots
M340 / 4Cr13 Corrosion-resistant applications 800,000+ shots
For the 43mm neck 35g preform, Ansix Tech selects S136 stainless steel for cavity and core components, heat-treated for maximum hardness and durability. This steel grade delivers exceptional corrosion resistance, excellent polishability (essential for transparent frosted finishes), and thermal stability under sustained high-speed production.
Achievable Tolerances:
General structural components: ±0.05mm
Precision threads and sealing surfaces: ±0.005mm
We provide full mold steel material certificates and heat treatment curves for complete traceability.
Mold Type Capabilities:
Hot runner systems: Reduce material waste (eliminates runner scrap), improves cavity-to-cavity balance
Stack molds: Doubles output without doubling machine size
Two-shot / multi-material molds: For multi-color or multi-material preforms
High-gloss mirror finish molds: Ra < 0.05μm for transparent and frosted applications
Gate Design Optimization via Moldflow Analysis: Ansix Tech performs comprehensive Moldflow analysis using Moldex3D and other advanced CAE tools before any steel is cut. The DFM process predicts weld line locations, gas trap areas, and filling imbalances across all cavities.
For the 43mm neck preform, the analysis determines:
Optimal gate quantity and location for balanced filling across 48–96 cavities
Predicted pressure drop and fill time per cavity
Melt front advancement to verify no hesitation or jetting
Warpage simulation to anticipate shrinkage compensation needs
Delivery Standards:
Simple molds (up to 16 cavities): 10–15 days
Medium-complexity molds (32–48 cavities): 25–30 days
High-cavitation molds (72–96 cavities): 35–45 days
Expedited service: Available on request—20–25 days for high-cavitation molds
Customer Value Translation: When we guarantee 1,000,000 shots from an S136 mold, that means you produce 1 million parts before even thinking about mold maintenance. When we hold ±0.005mm on thread sealing surfaces, that means your caps seal every time—no customer complaints about leakage. When we deliver in 25 days instead of industry standard 40, that means you launch products faster and capture market share sooner.
III. Injection Molding Process Control – Eliminating Customer Quality Anxiety
Customers worry about: Sink marks, flash, dimensional instability, batch-to-batch color variation. Ansix Tech's process control system systematically eliminates every one of these concerns.
Process Standardization & MES Integration: Every injection molding machine is networked to a central MES system. All molding parameters—melting temperature (260–280°C), mold temperature (5–15°C for PET with chilled water), injection pressure, holding pressure (80–120 MPa), cooling time (8–14 seconds), and screw speed—are locked in the MES and accessible only by authorized engineers. Every production batch undergoes first-article and last-article dimensional comparison to ensure continuous compliance.
Dimensional Stability Control:
The mold incorporates zone-specific temperature control using mold temperature controllers, maintaining core and cavity temperature differential within 2℃ to minimize warpage and shrinkage variation.
Ultrasonic in-mold wall thickness sensors provide real-time feedback on wall thickness distribution. The system automatically adjusts packing pressure and holding time to maintain dimensional stability.
Verified result: Critical hole spacing variation across three consecutive production weeks remains within ±0.02mm—enabling your downstream assembly operations to run without adjustment.
Cooling System Design – The Key to Short Cycles & Consistent Quality:
For high-cavitation 43mm neck preform molds, cooling system design is paramount:
High-precision cooling channels incorporating baffle and bubbler designs within both core and cavity plates
Temperature variation target: < ±2°C across all cavities
Conformal cooling where feasible ensures uniform heat extraction
Independent high-flow circuits for neck finish area to prevent unwanted crystallinity
Cooling time optimization: 8–12 seconds for 35g preform based on PET solidification requirements
Appearance Grade Achievable:
Surface Requirement Achievable Standard
Transparent (bubble-free, streak-free) Grade A optical clarity
Frosted matte finish Consistent surface roughness Ra 0.8–1.6μm
High-gloss mirror finish Ra < 0.05μm
Paint-ready / print-ready surface Controlled texture for adhesion
Special Material Capabilities: Ansix Tech has extensive production experience with:
PC/ABS, PC, PPS+40%GF, PEEK, PTFE/PFA, PA6+GF30, PBT, PEI, LCP
Flame-retardant grades: UL94 V-0 rated materials for electronics housings
UV-stabilized grades: 3000-hour UV testing verified—no color change, no property degradation
Liquid Silicone Rubber (LSR): Two-component molding capability on Arburg machines
Customer Value Translation: When we say "process parameters locked in MES," that means you never receive a bad batch because an operator changed a temperature setting. When we say "core/cavity temperature differential within 2℃," that means your preforms come out straight every time—no oval necks, no warped bodies, no blowing failures downstream. When we say "CPK≥1.33 on every critical dimension," that means you can trust every preform to fit your blow molder's grippers, mandrels, and stretch rods perfectly.
IV. Full-Process Service – Reducing Customer Management Cost
Early Intervention with DFM (Design for Manufacturability) Report: Before any tooling commitment, Ansix Tech provides a comprehensive mold feasibility analysis report including:
Recommended draft angles for easy ejection
Wall thickness optimization for balanced filling and cooling
Optimal gate location and number
Projected shrinkage compensation
Ejector pin mark location and depth allowances
Melt front simulation to identify potential weld lines
This prevents the costly scenario of opening a mold, running first shots, then discovering the part can't be ejected or has unacceptable sink marks.
Trial Shots & Sample Provision: Ansix Tech provides T0 through T3 sample shots, each accompanied by a detailed improvement report. The ability to quickly exchange mold inserts allows different design iterations to be tested without completely rebuilding the mold—saving weeks of tooling revision lead time.
Pilot Run Verification: Before full production release, Ansix Tech offers 100–500 shot pilot runs with statistical yield analysis and CPK calculation. Confirmation that the process is stable and capable before mass production begins—eliminating the risk of discovering quality issues after 10,000 parts are already molded.
Maintenance & Spare Parts Kit: Every mold ships with a spare parts kit containing critical wear components (ejector pins, core inserts, valve pins). Comprehensive mold maintenance is performed at every 200,000 shot interval. Lifetime repair services are provided at cost price—no markups, no hidden fees.
Customer Value Translation: The DFM report before tooling starts means you don't spend $50,000 on a mold that can't run. The pilot run before mass production means you don't scrap 10,000 parts while we figure out the process. The spare parts kit at delivery means when a pin breaks at midnight, you replace it immediately—not wait 2 weeks for shipping from China.
V. Differentiated Advantages – Direct Responses to Common Customer Pain Points
Common Customer Complaint Ansix Tech's Professional Solution
"Molds constantly need repair, disrupting my production schedule." 2,000-shot aging test before mold delivery with wear report included. 3-year structural warranty on mold components (excluding normal wear items).
"Excessive flash requires expensive secondary deflashing." 0.005mm parting line fit precision + self-locking clamp force compensation. Flash controlled under 0.03mm—eliminating manual deflashing.
"Dimensions change from batch to batch." Ultrasonic wall thickness sensors with closed-loop packing pressure compensation. In-mold temperature and pressure sensors for real-time cavity control.
"Mold repair takes weeks from external shops." In-house electrode machining center and EDM workshop. Most repairs (weld repair, insert replacement) completed within 24 hours.
"High energy costs are eating my margins." All-servo electric machines reduce energy consumption up to 60% vs. hydraulic alternatives. LED-illuminated cells and motion-sensor auxiliary equipment minimize idle power draw.
"I can't trust the quality of preforms from Chinese suppliers." ISO9001, IATF16949, ISO13485, ISO14001 certified. Every mold shipped with full dimensional report and material certificates. On-site quality audits welcome.
VI. How Ansix Tech Solves Customer Problems – Direct Value Mapping
Technical Capability Problem Solved Cost Saved Risk Reduced
5-axis machining with 0.002mm precision No flash, no manual deflashing $0.02–0.05/part saved Zero rejected parts from flash
In-house EDM & electrode machining Mold repair in 24 hrs vs. 2–3 weeks $5,000–15,000 per repair event No production stoppage waiting for repairs
DFM mold flow analysis before tooling No weld lines, gas traps, sink marks $20,000–50,000 saved in rework Right-first-time molds
All-servo electric injection machines 40–60% lower energy consumption $30,000–80,000/year on electricity Predictable operating costs
1,000,000-shot mold life from S136 steel No mold replacement for 3–5 years $80,000–150,000 saved in tooling No unplanned downtime
Interchangeable inserts Switch neck finishes without new mold $40,000–100,000 per variant saved Faster product launches
Real-time cavity pressure monitoring 0% defect shipment guarantee $10,000–50,000/year in scrap Zero customer returns
48–96 cavity high-cavitation molds Lower per-unit cost at high volumes Reduces part cost by 30–50% Competitive pricing advantage
VII. Material Selection & Raw Material Characteristics for 43mm Neck 35g Preform
Base Raw Material: PET resin (Polyethylene Terephthalate), a thermoplastic polyester formed from Purified Terephthalic Acid (PTA) and Monoethylene Glycol (MEG). PTA provides rigidity and barrier properties; MEG provides polymer chain flexibility.
Intrinsic Viscosity (IV) – The Critical Parameter for Preform Quality:
Target IV range: 0.76–0.86 dl/g for optimal mechanical strength and clarity
Higher IV (0.84+): Better strength, slower crystallization—suitable for carbonated beverage applications
Mid-range IV (0.76–0.80): Balanced properties for general packaging—ideal for toothpaste/cosmetic tubes
Additives incorporated as required: UV absorbers (UV protection), color masterbatch (brand colors), acetaldehyde scavengers (odor prevention), reheat additives (improved blow molding efficiency)
Recommended PET Resin Grades for 43mm Neck 35g Preform:
Grade Supplier IV (dl/g) Recommended Use
Neopet Aqua 76 Neo Group 0.76 Toothpaste, cosmetics, food-grade containers
Relpet H7761 Reliance 0.74–0.78 General-purpose packaging
Polyclear Plus 1111 Indorama 0.80–0.84 Fast-cycle, high-output preforms
Drying Requirements Before Processing: PET resin is hygroscopic and must be dried to <50 ppm moisture before injection molding to prevent hydrolysis (molecular chain degradation). Drying conditions: 160–180°C for 4–6 hours in a desiccant dryer.
Melt Processing Parameters:
Melting temperature: 260–280°C (rear zone lower, front zone higher)
Mold temperature: 5–15°C (chilled water)
Injection pressure: 80–150 MPa depending on cavity count
Holding pressure: 60–120 MPa
Cooling time: 8–14 seconds for 35g preform
VIII. DFM Analysis, Mold Design Priorities & Manufacturing Processes
Moldflow Analysis (DFM) Deliverables:
Fill time analysis with predicted pressure drop per cavity
Melt front advancement visualization
Weld line location prediction
Air trap identification
Temperature distribution across cavities
Warpage simulation before and after shrinkage compensation
Mold Design Priorities for 43mm Neck 35g Preform:
Balanced hot runner system with sequential valve gate control—essential for uniform filling across 48–96 cavities
Optimized cooling channel placement targeting <±2°C temperature uniformity across all cavities
Thread area design ensuring proper cap sealing function after blow molding
Neck finish dimensional control achieving ±0.02mm on critical sealing diameters
Ejector system design preventing part distortion during ejection
Mold Manufacturing Process Flow:
Steel selection & procurement with material certificates
Rough machining of mold base and cavity plates
Heat treatment (where required—S136, H13, etc.)
Precision CNC milling & turning of cavity and core components
EDM (electrical discharge machining) for complex features and fine details
Wire EDM for 0.03mm fine holes and narrow cooling channels
Hand polishing & surface finishing to required Ra value
Assembly of cavity components, hot runner, cooling circuits, ejector system
Mold trial on injection molding machine with full parameter documentation
Dimensional inspection with CMM and full report generation
Shipping with spare parts kit and maintenance manual
Manufacturing Challenges for 43mm Neck PET Preform:
Preventing flash at parting line → Solved with 0.005mm fit precision
Achieving uniform wall thickness → Solved with balanced runner design and Moldflow analysis
Avoiding neck crystallinity → Solved with dedicated neck cooling circuits
Maintaining cavity-to-cavity consistency → Solved with sequential valve gate and uniform cooling
IX. Process Optimization, Quality Control & Delivery Workflow
Injection Molding Process Optimization for Efficiency & Cost Control:
Parameter Optimized Setting Impact on Cost & Efficiency
Cooling time 8–12 seconds Most significant factor (28.78% of cycle time)—optimization reduces cycle time by 15–25%
Melting temp 260–270°C Prevents degradation, maintains IV
Holding pressure 80–120 MPa Reduces shrinkage by up to 22.55%
Mold temperature 5–15°C Ensures rapid solidification, shorter cycles
Process optimization studies show cooling time is the most significant factor affecting cycle time—accounting for 28.78% of total cycle duration. By optimizing cooling system design and parameter settings, Ansix Tech reduces cycle times to 10–14 seconds for the 43mm neck 35g preform.
Quality Control & Assurance:
Incoming quality: Raw material certificates + IV testing upon receipt
In-process quality: 100% vision inspection + SPC real-time monitoring
Outgoing quality: AQL sampling per customer requirements + full dimensional report
Traceability: Batch number tracking on every pallet shipped
Certifications: ISO9001, IATF16949, ISO13485, ISO14001
Packaging & Delivery Process:
Cooling stabilization after molding (ambient temperature equalization, minimum 24 hours)
Vision inspection for surface defects (scratches, bubbles, contamination)
Dimensional audit (wall thickness, neck diameter, overall length)
Count verification by weight or automated counter
Packaging in moisture-barrier bags (desiccant included where required)
Carton packing with labeled outer cartons (batch number, quantity, production date)
Pallet stretch wrapping with corner protectors
Warehouse staging & container loading
Documentation package (COA, dimensional report, packing list, commercial invoice)
Lead Time Standards:
Order Type Production Lead Time Shipping Method
Sample / Trial run (1,000–5,000 pcs) 7–10 days Air / Express courier
Small batch (50,000–200,000 pcs) 14–18 days Sea / Air
Full container order (500,000+ pcs) 21–25 days Sea freight
X. Ansix Tech's Industry Experience – Reliability You Can Count On
Company Profile:
Founded in 1998 in Hong Kong
Four production bases in China (Shenzhen, Dongguan, Hunan) and Vietnam
Total factory area exceeds 200,000 m²
1,200+ employees
260 injection molding machines (30–2800 tons)
ISO9001, IATF16949, ISO13485, ISO14001 certified
PET Preform Expertise:
Over 28 years of manufacturing experience
Complete service from prototyping to mass production and assembly verification
Custom neck finishes: 28mm, 30mm, 38mm, 43mm, 45mm, 55mm, 63mm
Standard grammages from 12g to 300g, fully customizable
Applications: Beverage bottles, cosmetic containers, pharmaceutical packaging, health supplies, toothpaste tubes, household chemicals
XI. How Ansix Tech Reduces Hard Costs – Material, Process & Efficiency Optimization
Material Cost Reduction:
Strategy Method Typical Savings
Optimized shot weight Reduce runner waste via hot runner systems 8–12% material savings
Cavity balancing Uniform filling prevents overpacking heavier cavities 3–5% material savings
Scrap reduction Real-time process control reduces reject rate to <0.5% 80–90% reduction in scrap cost
Processing Cost Reduction:
Strategy Method Typical Savings
Cycle time reduction Optimized cooling design 15–25% shorter cycles → 20–35% more output per machine
Energy reduction All-servo electric machines 40–60% lower electricity consumption
Labor reduction Automated take-out robots + vision inspection 30–50% lower labor cost per part
Tooling Cost Reduction:
Strategy Method Typical Savings
Interchangeable inserts One mold base, multiple neck/weight configurations $40,000–100,000 saved per variant
Standardized components Off-the-shelf ejector pins, core pins, valve gates 20–30% lower mold cost
Extended mold life Premium steel selection + heat treatment Reduces amortized tooling cost by 50% over mold lifetime
Customer Value Summary – How Ansix Tech's Capabilities Solve Your Problems:
Dear customer, for us, a mold is not just a piece of steel—it is a money-printing machine. When we design a mold, we simultaneously plan for injection molding robustness: the filling balance, the ejection logic, the cooling uniformity, the venting pathways. The result is a mold that arrives at your production line ready to run without debugging, producing flash-free parts from shot one, delivering high output with minimal maintenance.
Contact Ansix Tech:
Email: info@ansixtech.com
Ansix Tech – Your Trusted Partner in Plastic Injection Molding Solutions, Where Precision Meets Production Efficiency.
Ansix Tech Co Ltd
If you have any plans related to 43mm Neck 35g Weight Health Supplies Toothpaste Transparent Frosted Tube Preform Cosmetic Bottle PET Preform Tube , 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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