GTW 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.

GTW Machinery proudly presents our PET Clear Wide-Mouth Jar Preforms—precision-engineered preform solutions designed specifically for the production of transparent wide-mouth containers. These preforms are ideal for packaging applications where product visibility is essential, including food jars, cosmetic containers, and premium household products . Our clear preforms deliver exceptional optical clarity, consistent wall thickness, and reliable blow molding performance.
1. Exceptional Crystal Clarity
Our wide-mouth preforms offer superior transparency:
Mirror-polished cavity surfaces ensuring exceptional glass-like clarity
High-gloss finish enhancing product presentation and shelf appeal
Minimal haze and cloudiness through optimized processing and cooling
Excellent light transmission for product visibility
2. Wide-Mouth Neck Finishes
Designed for easy access and versatile applications:
| Neck Size | Typical Application |
|---|---|
| 38mm | Food jars, sauce containers, cosmetic jars |
| 48mm | Edible oil containers, bulk packaging |
| 63mm | Large food jars, storage containers |
| 70mm | Premium cosmetic jars, specialty packaging |
| 89mm | Large bulk containers, industrial jars |
3. Food-Grade Material Compliance
Virgin PET material meeting FDA and EU food contact regulations
Non-toxic, odorless preserving product freshness and taste
Low acetaldehyde (AA) generation for sensitive food applications
BPA-free ensuring consumer safety
4. Precision Engineering
| Parameter | Specification |
|---|---|
| Neck Finishes | 38mm, 48mm, 63mm, 70mm, 89mm, custom |
| Preform Weight Range | 25g - 120g |
| Wall Thickness Variation | < 0.12mm |
| Weight Difference Between Cavities | < 0.5 grams |
| Material | Virgin PET, rPET compatible |
5. High-Efficiency Cavity Configurations
| Cavity Count | Typical Output | Ideal Application |
|---|---|---|
| 8-16 cavities | 4,000-10,000/hour | Medium-volume production |
| 16-24 cavities | 8,000-15,000/hour | High-volume operations |
| 24-32 cavities | 12,000-20,000/hour | Large-scale manufacturing |
6. Premium Mold Construction
| Component | Material | Hardness |
|---|---|---|
| Core and Cavity Inserts | S136 Stainless Steel | HRC 48-52 |
| Neck Rings | Imported Nitrided Steel | HRC 45+ |
| Mold Base | Chrome-plated P20 Steel | 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 clarity across all cavities
Weight variation maintained below 0.5 grams
8. Optimized Cooling System
Spiral cooling channels for uniform heat extraction
Enhanced cooling in neck area ensuring thread dimensional stability
Cycle times of 20-35 seconds depending on preform weight
Food Packaging
Jam, honey, and preserve jars
Sauce and condiment containers
Pickle and olive jars
Dry food storage containers
Cosmetics and Personal Care
Cream and lotion jars
Body butter and scrub containers
Cosmetic powder jars
Skincare product packaging
Household Products
Detergent and cleaning solution containers
Storage jars for dry goods
Laundry product containers
Specialty Packaging
Premium gift jars
Sample containers
Artisan product packaging
CMM inspection verifying all critical dimensions
Clarity testing ensuring optical transparency
Weight consistency verification across all cavities
Thread gauge testing confirming cap compatibility
Sample production available for customer approval
Superior clarity: Mirror-polished cavities for exceptional transparency
Wide-mouth expertise: Specialized knowledge of large-diameter preform requirements
Precision engineering: Consistent wall thickness for reliable blow molding
Premium materials: S136 steel construction for extended mold life
High efficiency: Multi-cavity configurations for optimal productivity
GTW Machinery's PET Clear Wide-Mouth Jar Preforms deliver exceptional clarity and reliable performance for premium food and cosmetic packaging. Contact us today to discuss your requirements.