METO Machinery is a leading manufacturer and supplier of high-precision bottle cap molds for the global packaging industry. Specializing exclusively in the design and production of advanced bottle cap 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 plastic caps efficiently and cost-effectively.

METO Machinery proudly presents our Integrated Flip-Top Caps with Inner Seal—precision-engineered closure solutions designed specifically for condiment and liquid detergent applications. These innovative caps feature a built-in inner sealing plug that provides superior leak protection while the integrated flip-top design offers convenient one-handed operation, making them ideal for frequently used products in kitchens and laundry rooms.
1. Integrated Inner Seal Design
The defining feature of our cap is its built-in leak-proof mechanism:
Molded inner plug creates a secondary seal inside the bottle neck
Dual-seal protection prevents leakage even when bottles are stored horizontally or inverted
Eliminates need for separate liners or induction seals reducing assembly costs
Consistent sealing pressure maintained throughout product usage
2. One-Piece Integrated Construction
Our caps combine multiple functions in a single component:
Flip-top lid connected by durable living hinge tested for thousands of openings
Inner seal molded as integral part of the cap base
No assembly required reducing manufacturing complexity and cost
Tamper-evident options available with breakable bridges
3. Condiment-Specific Advantages
Perfect for ketchup, mustard, mayonnaise, and sauce bottles:
Prevents messy drips and drying around dispensing orifice
Clean opening and closing without product buildup
Controlled dispensing with various orifice sizes available
Wide mouth options for thicker condiments
4. Detergent-Specific Benefits
Ideal for liquid laundry and dish detergents:
Leak-proof during shipping and storage preventing messy accidents
One-handed operation convenient for busy kitchens and laundry rooms
Chemical-resistant materials compatible with surfactant formulations
Dispensing control reducing product waste
5. Material Compatibility
Food-grade PP (Polypropylene) for condiment applications meeting FDA standards
HDPE (High-Density Polyethylene) for detergent applications requiring chemical resistance
Various colors and finishes available for brand differentiation
| Parameter | Specification |
|---|---|
| Neck Sizes | 24/410, 28/410, 38/400, custom sizes |
| Orifice Options | 1.5mm to 8mm for various viscosities |
| Materials | Food-grade PP, HDPE |
| Temperature Range | -5°C to 80°C |
| Certification | FDA, EU food contact compliance |
Condiments
Ketchup and tomato sauce
Mustard and mayonnaise
BBQ sauce and salad dressings
Soy sauce and vinegar
Liquid Detergents
Laundry detergent
Dish soap
Fabric softener
All-purpose cleaners
Every METO flip-top cap mold undergoes rigorous testing:
Leak testing under various pressures and orientations
Hinge durability testing for thousands of cycles
Dimensional verification using CMM inspection
Material certification ensuring food-grade compliance
Specialized expertise: Deep understanding of condiment and detergent packaging requirements
Integrated design: One-piece construction eliminating secondary assembly
Leak-proof performance: Dual-seal protection for secure containment
Durable hinges: Living hinge technology proven for thousands of openings
Customization options: Tailored neck finishes, orifice sizes, and colors
METO Machinery's Integrated Flip-Top Caps with Inner Seal represent the ideal solution for condiment and detergent manufacturers seeking reliable, leak-proof, user-friendly closures. Contact us today to discuss your requirements.
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