PET Preform Mold for Wide-Mouth Jars – Precision Molds for Large-Opening -PET Preform Mould-Taizhou Gutewei Mould Co., Ltd.

PET Preform Mold for Wide-Mouth Jars – Precision Molds for Large-Opening

Optimized for Wide-Mouth Preform Weights

Jar Size	Typical Preform Weight	Neck Finish	Common Applications
100ml – 250ml	18g – 28g	38mm / 43mm	Spices, supplements, creams
300ml – 500ml	28g – 40g	43mm / 48mm	Honey, jams, sauces
600ml – 1L	42g – 60g	48mm / 53mm	Pickles, olives, bulk foods
1.5L – 2L	65g – 90g	53mm / 58mm	Detergents, household products
3L – 5L	95g – 140g	63mm / 70mm	Industrial chemicals, bulk food
5L+	150g – 250g	70mm – 89mm	Water coolers, industrial containers

Description

Gutewei is a professional manufacturer specializing in high-quality PET preform molds for the global packaging industry. We are pleased to introduce our 18 Cavity PET Preform Mold for Wide-Mouth Jars, engineered specifically for the production of large-opening containers.

Wide-mouth jars present unique challenges in preform design – including thicker wall sections, specialized neck finishes, and enhanced material distribution requirements. Our 18-cavity wide-mouth preform mold is designed to meet these specific demands, delivering consistent quality and reliable performance.

Why Choose Gutewei for Wide-Mouth Preform Molds?

Specialized for Large Openings
wide-mouth jars require preforms with larger diameter necks and reinforced designs. Our molds are engineered specifically for these applications, ensuring proper material distribution during blow molding.

Enhanced Material Capacity
Wide-mouth preforms typically weigh more than standard bottle preforms. Our 18-cavity mold features reinforced cooling channels and robust construction to handle the increased thermal load of heavier preform sections.

Multiple Neck Finish Options
We accommodate various wide-mouth configurations:

38mm – Small jars and containers
43mm / 48mm – Medium jars for food products
53mm / 58mm – Large jars for bulk items
63mm / 70mm – Extra-large containers
83mm / 89mm – Industrial and specialty jars
Custom neck finishes for proprietary closures
Threaded and snap-on closure designs

Technical Features:

Premium Mold Construction

Cavities and Cores: S136 stainless steel, heat-treated to 48-52 HRC
Neck Rings: 1.2344 ESR steel with enhanced wear resistance for wide-diameter threads
Mold Base: 2738 or 2311 pre-hardened steel for dimensional stability
Reinforced Design: Heavy-duty construction for thicker preform walls

Enhanced Cooling: Additional cooling capacity for heavier preforms

Technical Specifications:

Parameter	Details
Cavity Count	18 Cavities
Preform Weight Range	15g – 250g
Neck Finishes	38mm, 43mm, 48mm, 53mm, 58mm, 63mm, 70mm, 83mm, 89mm, Custom
Steel Grade	S136 / 2738 / 2311
Hot Runner	Husky / Mold-Masters / Yudo / Sino
Mold Base	LKM / Hasco / DME / Custom
Machine Tonnage	250 – 500 tons (depending on weight)
Cycle Time	15 – 30 seconds (depending on weight)
Output/Hour	2,100 – 4,300 preforms
Warranty	1 year / 1.5M shots

Key Features for Wide-Mouth Jar Production:

✓ Reinforced Neck Design
Precision-machined neck rings produce wide-diameter threads that provide secure sealing and easy opening for consumers.

✓ Uniform Wall Distribution
CNC-machined cavities ensure consistent preform wall thickness for uniform stretching during blow molding – essential for wide-mouth shapes.

✓ Enhanced Cooling Capacity
Optimized cooling channels handle the increased thermal load of heavier preform walls, maintaining cycle time efficiency.

✓ Durable Construction
Premium S136 steel with heat treatment provides extended mold life under continuous production conditions.

✓ Heavy Preform Capability
Engineered to handle preform weights up to 250g for large container applications.

✓ Easy Maintenance
Interchangeable cavity and core inserts allow quick replacement and minimal downtime.

✓ Custom Configurations
Molds tailored to your specific wide-mouth jar design and production requirements.

Quality Assurance Process:
Each Gutewei 18-cavity wide-mouth mold undergoes comprehensive testing:

CMM dimensional verification for all cavities
Hot runner temperature balance validation
Cooling channel flow and pressure testing
Sample preform production and inspection
Neck finish gauging and thread verification
Complete documentation package included

We exclusively use premium corrosion-resistant stainless steels such as Assab S136 (Sweden) and Groditz M340 (Germany). Combined with deep vacuum nitriding, surface hardness exceeds HV1000°, with mirror polishing up to Ra≤0.015μm. We guarantee a mold life of over 3 million shots.
Standardized with our in-house developed pneumatic valve gate hot runner system. Multi-zone independent temperature control keeps fluctuation ≤±1℃, preventing material degradation. The gate is automatically sealed after injection, creating a "gate-cut-free" preform that requires no manual trimming — achieving true zero-waste production.
Our 3D conformal cooling channels, designed based on ANSYS simulation, eliminate hot spots and increase cooling efficiency by over 30%. By optimizing the mold structure and injection process, we achieve an injection cycle time of under 10 seconds, significantly boosting your production capacity.
Perfectly compatible with major global injection molding machine brands: HUSKY, NETSTAL, SACMI, KRONES, DEMAG, and all major Chinese manufacturers. Standard interface design for plug-and-play operation.

(Mold Cav Qty)	Neck Size）	Application
18 cav	48mm, 38mm,30/25,20/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, edible oil, medicine
24 cav	48mm,38mm,30/25,29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical, products, edible oil, medicine
32 cav	48mm,38mm,30/25,29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, edible oil, medicine
48 cav	48mm,38mm,30/25,29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, edible oil, medicine
56 cav	48mm, 38mm, 30/25, 29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, edible oil, medicine
72 cav	38mm, 30/25,29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, medicine
96 cav	38mm, 30/25, 29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, medicine
112 cav	30/25, 29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, edible oil, medicine
128 cav	30/25, 29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, edible oil, medicine
144 cav	30/25, 29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, edible oil, medicine
176 cav	30/25, 29/25, PCO1881, PCO1810	Water, Juice, CSD, Daily chemical products, edible oil, medicine

We are a technology-driven enterprise specializing in the R&D and manufacturing of PET preform molds. Rooted in the industrial heritage of Huangyan, Taizhou – known as "China's Mold Town" – and integrating top-tier German and Japanese machining equipment with Swiss heat treatment processes, we are committed to providing high-cavitation, high-precision, and long-life complete preform molding solutions for the beverage, food, cosmetic, and pharmaceutical packaging industries.