Standard Screw Neck Large Capacity Preforms: 3L-5L Solutions for Bulk Packaging
LEIZHEN Machinery: Professional Manufacturer of Preform Molds
LEIZHEN Machinery is a leading manufacturer and supplier of high-precision preform molds for the global packaging industry. Specializing exclusively in the design and production of advanced PET preform tooling, we provide comprehensive, customized solutions for manufacturers worldwide. With years of technical expertise and a strong commitment to research and development, we offer state-of-the-art molds that enable customers to produce high-quality preforms efficiently and cost-effectively.
Standard Screw Neck Large Capacity Preforms: 3L-5L Solutions for Bulk Packaging
LEIZHEN Machinery proudly presents our Standard Screw Neck Large Capacity Preforms—precision-engineered preform solutions designed specifically for 3-liter to 5-liter containers. These large-format preforms are essential for bulk packaging applications including edible oils, large water bottles, industrial chemicals, and food service containers . Our preforms feature standard screw neck finishes, ensuring compatibility with widely available closures while delivering the structural integrity required for larger container volumes.
Key Features
1. Standard Screw Neck Compatibility
Our large capacity preforms feature industry-standard neck finishes:
38mm screw neck – Common standard for 3L-5L containers
48mm screw neck – Ideal for wide-mouth bulk containers
PCO compatible options – Available for specific applications
Custom neck finishes – Tailored to your closure requirements
2. 3L-5L Volume Range
Designed specifically for bulk packaging applications:
| Container Volume | Preform Weight Range | Typical Applications |
|---|---|---|
| 3 Liters | 45g-60g | Edible oil, water, juice |
| 4 Liters | 55g-75g | Bulk water, industrial |
| 5 Liters | 65g-90g | Edible oil, chemical, food service |
3. Superior Structural Integrity
Engineered for large container performance:
Reinforced neck design – Enhanced wall thickness in critical thread area
Optimized material distribution – Ensuring uniform blow molding for large containers
High intrinsic viscosity (IV) compatibility – Maintains strength for larger volumes
Impact resistance – Withstands handling and transport demands
4. Precision Engineering
| Parameter | Specification |
|---|---|
| Neck Finishes | 38mm, 48mm standard; custom options |
| Preform Weight | 45g-90g (3L-5L range) |
| Wall Thickness Variation | < 0.12mm |
| Weight Difference Between Cavities | < 0.5 grams |
| Material | Food-grade PET, virgin or rPET |
5. Cavity Configurations
| Cavity Count | Typical Output | Ideal Application |
|---|---|---|
| 16-24 cavities | 5,000-10,000/hour | Medium volume production |
| 24-32 cavities | 8,000-15,000/hour | High volume operations |
| 32-48 cavities | 12,000-22,000/hour | Large-scale production |
6. Premium Mold Construction
| Component | Material | Hardness |
|---|---|---|
| Core and Cavity Inserts | S136 Stainless Steel | HRC 48-52 |
| Neck Rings | Nitrided Steel | HRC 45+ |
| Mold Base | Chrome-plated P20 | Pre-hardened |
Mold life: Engineered for 3-5+ million injection cycles
7. Advanced Hot Runner System
Valve gate technology for clean gate vestige
Individual temperature control within ±1°C
Balanced filling ensuring consistent weight across all cavities
Low acetaldehyde (AA) generation for taste-sensitive applications
Applications
Edible Oil Industry
3L-5L cooking oil containers
Olive oil and specialty culinary oils
Bulk oil packaging for food service
Bottled Water
3L-5L large-format water bottles
Home and office water containers
Bulk water packaging
Household Products
Liquid detergent and cleaning solutions
Industrial and commercial chemicals
Bulk cleaning products
Food Service
Bulk condiment containers
Food ingredient packaging
Institutional food service products
Quality Assurance
Every LEIZHEN large capacity preform mold undergoes rigorous testing:
CMM inspection verifying all critical dimensions
Weight consistency verification across all cavities
Thread gauge testing confirming cap compatibility
Sample production available for customer approval
Why Choose LEIZHEN for Large Capacity Preform Molds?
Specialized expertise: Deep understanding of 3L-5L container requirements
Standard compatibility: Preforms designed for widely available 38mm and 48mm closures
Structural integrity: Reinforced design for large container performance
High efficiency: Multi-cavity configurations for optimal productivity
Premium materials: S136 steel construction for extended mold life
Comprehensive support: Design consultation, installation guidance, and after-sales service
Partner with LEIZHEN for Large Capacity Preform Solutions
LEIZHEN Machinery's Standard Screw Neck Large Capacity Preforms represent the ideal solution for manufacturers seeking reliable, high-quality preforms for 3L-5L bulk packaging applications. Contact us today to discuss your requirements.
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