Pin Valve Self-Locking Wide Mouth Jar Preform Mould – Zero Flash, High Cavity Consistency For PET Jar Production
Stringing at the preform gate, burrs and flash appear at the screw neck, inconsistent preform wall thickness, and frequent injection moulding downtime killing your PET jar preforms production profit? Our custom-designed pin valve self-locking jar preform mould solves the pain points that plague jam, honey, edible oil, and food preform manufacturers in Southeast Asia, the Middle East, and Africa.
What makes our self-locking jar preform mould different from generic moulds?
1. Adopts a needle valve self-locking clamping structure, and the parting surface accuracy is controlled within ±0.05mm. Uniform clamping force fully covers wide-mouth parting lines. Prohibit flash, burrs, thread misalignment, and incomplete neck forming – the top 4 rejection causes for wide jar preforms. Even after 2~3 million shot cycles, clamping precision stays unchanged, cutting mould repair & polishing downtime by 70%.
2. Balanced hot runner + optimized water cooling system sourced from verified PET mould research data. We adopt flow balance hot runner combined with high-efficiency fluid cooling channel layout, referenced from domestic university research on PET preform mould cooling technology. Cavity flow error controlled within ±0.5%. Preform cooling efficiency rises by 30%, moulding cycle shortened by 20%–28%. No uneven crystallization, color difference or internal stress defects.
3. Food-grade S136 SS core components, mirror polished mould inserts with blind-spot-free structure. The mold adopts a core and cavity double self-locking structure, which is easy to disassemble and thoroughly clean. Fully pass FDA, LFGB, SFDA (Saudi Arabia) and SONCAP (Nigeria) food contact material standards. Perfect for sterile food packaging production lines.
4. Customizable multi-cavity wide diameter design Support 4–48 cavities tailored to your injection moulding machine tonnage. The neck range from 38mm to 120mm, compatible with honey jars, sauce jars, edible oil containers, PET food jars and cosmetic wide-mouth bottles. Works flawlessly with virgin PET, PCR recycled PET mixed raw materials.
5. Voltage fluctuation resistant structure for emerging markets Strengthened wear-resistant guiding components and simplified maintenance architecture. Stable operation under unstable power grids in Riyadh, Abuja and other regional industrial zones. Local operators can complete daily maintenance without senior mould technicians.
All custom designs are protected under NDA. Your intellectual property is 100% safe with us. Send your preform design drawing, injection machine model (including space between tie bars, shooting weight, max mold thickness), target daily/month output & local certification requirements to unlock exclusive price.
Get Custom Jar Preform Mould Quotation Within 24H
Introduction
Wide-mouth jar preform manufacturing is not just a simple injection moulding process. Deformation of the neck screw thread, flash of neck mouth, insufficient clamping force of the injection moulding machine, frequent mould replacement, which slow down production – every PET packaging manufacturer faces these costly troubles.
Our pin valve self-locking wide mouth jar preform mould is engineered to solve all these core manufacturing pain points at the root.
With 12 years dedicated to PET preform mould R&D and manufacturing, we have supplied stable mould solutions to over 30+ countries' food, beverage and daily chemical packaging factories. We turn unstable low-yield production into high-efficiency, low-cost mass output.
Product Attributes
|
Shaping Modle |
Plastic Injection Mould |
Runner Structure |
Hot Runner System |
|
Place of Origin |
Zhejiang, China |
Mould Size |
1100*680*580mm |
|
Brand Name |
Younce |
Mould Weight |
3400kg |
|
Mold Type |
PET Preform Mould |
Design Software |
UG, CAD/CAM, etc |
|
Model |
YC-PET-18 |
Surface Treatment |
Polishing Finish |
|
Serial Number |
250618188068 |
Hardness Treatment |
Nitrogen Treatment |
|
Cavity |
18 |
Processing |
Wire Cutting, High-speed Engraved, CNC, Polishing, Etc. |
|
PET Preform Weight |
68g |
Lifetime |
At Least 3 Million Shots |
|
Product Material |
Steel |
Gate Type |
Pin Valve Gate, Short Tail, Long Tail |
|
Structurer Material |
P20, S136, H13 and others |
Cycle Time |
45s |
Core Production Pain Points Our Jar Preform Mould Solves
Have you encountered these costly issues on your current moulds?
1. Insufficient clamping force from PET preform moulds causes uneven wide mouth forming and displaced threads, pushing the reject rate higher.
2. Unbalanced injection pressure leads to irregular preform wall thickness, lowering the finished blow bottle qualification rate.
3. Clamping precision declines after thousands of moulding cycles, generating constant flash and burrs, requiring frequent polishing and maintenance stops.
4. Outdated cooling channel layout extends moulding cycle, caps daily output, and inflates electricity consumption.
5. Mould material fails to meet local food safety standards, blocking market access in Saudi Arabia, Nigeria, and other regulated regions.
Every jar preform mould we produce undergoes strict CAE mould flow analysis, iterated with data from over 1,000 delivered mould projects. Each cavity delivers identical preform dimensional accuracy and surface quality, meeting top-tier industry standards.
Key Product Features
1. Pin Valve Self-Locking Core/Cavity Mechanism – Zero Deviation Clamping, Ensures Product Concentricity
- Proprietary self-locking structure evenly distributes clamping force across jar-mouth parting lines, eliminating flash and burrs fundamentally.
- Each cavity has its own exhaust configuration on the wide-mouth parting surface; mold open/close response speed improved by 15% to shorten moulding cycle.
- Clamping precision maintain stable after 1.5 to 3.0 millions shots, extending mould service life by 30% and minimizing downtime for repair and replacement.
2. High Precision Balanced Hot Runner System – Uniform Preform Quality Across All Cavities
Hot runner layout optimized for wide-mouth PET preform fluid characteristics, inter-cavity flow balance error controlled under ±0.5%.
Independent temperature control matched with high-efficiency fluid cooling technology, reducing preform internal stress and uneven cooling issues.
Effectively avoid chromatic aberration, abnormal crystallization, and wall thickness deviation; steady preforms pass rate above 99.5%.
Compatible with food-grade virgin PET, PP, and PCR recycled PET raw materials to satisfy diverse production demands.
3. Food-Grade Compliant Construction – Meet Global Regional Certification Rules
Core mould inserts adopt imported S136 stainless steel with mirror polishing, no sanitary dead corners, compliant with FDA, LFGB food contact standards.
Detachable structure for easy disassembly and deep cleaning, preventing cross-contamination from residual raw materials between batches.
Adaptable to sterile production lines for honey, jam, baby food, and beverage jar preform manufacturing.
Fully satisfy SFDA compliance rules in Saudi Arabia and SONCAP certification requirements for Nigeria market entry.
4. Fully Customizable Cavity & Dimension Layout
Custom cavity count from 4 cavities to 48 cavities, matched to your injection machine tonnage and daily/ monthly output target.
Wide mouth diameter customization range: 38mm–120mm, fit for jam jars, honey containers, edible oil drums, seasoning bottles, and PET food packaging jars.
Hot runner system; self-locking needle valve assembly fits existing injection machines without extra equipment modification.
One-stop service covering preform design, mold flow simulation, trial moulding, and mass production technical support.
5. Energy-Saving & Low-Maintenance Design – Cut Long-Term Production Costs
The mould cavity adopts a conformal cooling structure. When combined with high thermal conductivity mould steel, cooling efficiency is increased by 30%, and the moulding cycle is shortened by 25%.
High-efficiency copper alloy sleeve guide mechanism reduces energy consumption during mould opening & closing by 20%, slashing monthly power expenses for long-run mass production.
Standardized wearing parts for cheap, quick replacement; routine daily maintenance operable by local general workers without senior mould engineers.
Reinforced structural design adapts to unstable power grids in Middle East and African industrial zones, lowering monthly failure frequency by over 85%.
Customer Success Stories
Case 1: Riyadh, Saudi Arabia – Local Honey & Jam Food Packaging Manufacturer
Client Pain Points
A leading food packaging plant in Riyadh specializes in producing wide-mouth jars for honey and jam. Their imported moulds suffered weak concentricity difference, uneven neck forming, 5% reject rate, and short mould service life – requiring one mould replacement per year, creating heavy recurring production costs.
Our Custom Solution
We delivered a tailor-made 24-cavity needle valve self-locking wide mouth jar preform mould compatible with their existing 300T injection machine. The cooling channel layout was upgraded to suit Riyadh's high ambient temperature environment. All core inserts use food-grade S136 stainless steel to pass the SFDA Saudi food safety certification.
Post-Delivery Production Results
1. Preform reject rate dropped from 5% to 0.15%, saving over 120,000 SAR in raw material costs yearly.
2.moulding cycle shortened from 32s to 28s, boosting single machine daily output by 40%.
3.Mould service life extended 100%, replacement cycle prolonged from 12 months to 36 months, eliminating annual extra mould procurement expenditure.
4.Finished jar products successfully passed SFDA inspection, winning exclusive bulk supply contracts with major hypermarket chains across Saudi Arabia.
Case 2: Abuja, Nigeria – Large-Scale Beverage & Edible Oil Packaging Plant
Client Pain Points
A major packaging factory in Abuja produced 5L large-diameter PET water bottles and edible oil jars. Conventional moulds lost clamping accuracy rapidly after continuous operation, generating persistent flash defects. Local maintenance teams lacked professional mould repair skills, leading to long unplanned shutdowns and delayed order fulfillment.
Our Custom Solution
We customized a 32-cavity self-locking large wide mouth preform mould with reinforced wear-resistant clamping components. The maintenance structure was simplified to lower operation technical barriers. We provided full on-site operation & maintenance training, and the mould fits mainstream injection machine brands widely used in Nigeria without hardware reconstruction.
Post-Delivery Production Results
1.Mould maintained stable clamping precision after 18 months of non-stop mass production; flash defects completely eliminated.
2.Unplanned maintenance downtime reduced by 70%, on-time order delivery rate rose from 72% to 98%.
3.Blow moulding pass rate improved from 90% to 99%, cutting customer product complaint volume by 90%.
4.Reinforced anti-fluctuation power system minimized daily breakdown frequency by 85%; local junior operators can independently complete daily routine maintenance.
|
Parameter Item |
Standard Configuration |
Customization Range |
|
Standard Wide Mouth Diameter |
38/45/80/100mm Jar Mouth |
Full customization 38mm–120mm |
|
Standard Cavity Quantity |
8/12/16/24/ 32 Cav |
4–48 Multi-cavity options |
|
Core/Cavity Mould Steel Grade |
Food-Grade S136 Stainless Steel |
Upgradeable S136H, AISI 422 special alloy steel |
|
Structure |
Pin Valve Self-Locking |
Self-locked/ No Self-locked |
|
Compatible Injection Machine |
120T–450T Standard moulding Machine |
Customize per your existing machine parameters |
|
Single Preform Weight Range |
15g–120g Standard Jar Preform |
Adjustable based on your preform drawing |
|
Rated Mould Service Life |
2,500,000 Shots |
Upgrade to over 3,000,000 shots |
Processing Center
Limited Time Factory Direct Benefits For Global Buyers
✅ Free PET jar preforms structural optimisation drawing design
✅ Free professional CAE mould flow simulation report
✅ Full set of production process parameter guidance
✅ 7/24 multilingual technical support for Saudi Arabia, Nigeria, Middle East & Africa clients
✅ On-site installation, commissioning and operator training available upon request
✅ 12-month core/cavity/neck warranty + lifelong technical after-sales service
Request Free Custom Mould Proposal & Quotation
Shipping & Packaging
FAQ
Q1: Can your moulds work with low-quality recycled PET (PCR) raw materials?
A1: Yes. Our hot runner and needle valve assembly are optimized for PCR material fluidity and impurity resistance. The mould stably supports 30%–100% recycled PET mixing ratios without blocking or surface defects on jar preforms.
Q2: What shipping port options do you offer for Saudi Arabia & Nigeria orders?
A2: We arrange sea freight to Jeddah Islamic Port (Saudi Arabia) and Lagos Port (Nigeria). Door-to-door delivery to factories in Riyadh and Abuja is available with third-party logistics partners specializing in industrial mould cargo clearance.
Q3: Do you supply matching auxiliary equipment for the full preform production line?
A3: We cooperate with trusted injection machine, cooling tower and robot manufacturers. We can provide one-stop full line quotation include mould, injection moulding machine, preform take-out robot and cooling auxiliary equipment upon request.
Q4: Can you adjust the mould structure to produce multi-spec jar preforms on one set of mould?
A4: Interchangeable core templates are available as an optional upgrade. One mould base can produce 2–3 different wide mouth jar preform weights via quick core templates replacement, reducing extra mould investment for factories with multiple product lines.
Q5: How do you handle SFDA and SONCAP certification document provision?
A5: We supply material test reports, stainless steel certificate and food contact safety test files. Our technical team cooperates with your local third-party inspection institute to complete the document audit required for Saudi SFDA and Nigeria SONCAP market entry.
Q6: Can the self-locking wedge structure be retrofitted onto my existing old jar preform mould?
A6: Self-locking requires integrated structural design, so retrofitting existing moulds isn't recommended. Retrofit will break original cavity concentricity, we only supply full new mould sets with a complete self-lock system.
Q7: What air pressure standard do your pin valve hot runners require?
A7: Standard working air pressure 0.5–0.7MPa. We supply matched pneumatic control valve with every mould, compatible with common factory air compressors in Saudi Arabia and Nigeria.
Q8: How long is the production lead time for custom self-locking pin valve jar preform mould?
A8: Standard 16/24 cavity mould: 28–33 working days. Custom large cavity (48/72 cavity) or special wide-mouth thread design: 38–45 working days. We cover all export fumigation wooden packaging.
