With the development of the food industry, olive oil packaging design increasingly focuses on sealing performance, user convenience, and environmental sustainability. Among them, the 31.5x24mm olive oil cap has become a market favorite due to its scientifically optimized size, high-quality materials, and excellent sealing performance.
Why Choose a 31.5x24mm Olive Oil Cap?
1. Suitable for Various Packaging Sizes, Widely Used
The 31.5x24mm bottle cap is compatible with 250ml, 500ml, and 1L olive oil bottles, making it a popular choice in the industry due to its versatile application.
2. Balances Smooth Oil Flow and Control
Controlling oil flow is crucial when pouring olive oil.
A bottle opening that is too large may cause excessive oil flow, making portion control difficult.
A bottle opening that is too small may restrict the oil flow, making it inconvenient.
With a 31.5mm diameter, this cap ensures stable pouring, while the 24mm height provides ample space for internal sealing components or anti-leak structures, effectively preventing oil leakage.
3. Easy to Open and Securely Seal
This cap size typically features a screw-on design, allowing for easy twist-off opening while ensuring a tight seal.
The cap's height and diameter allow for single-handed operation, enhancing user convenience.
4. Technological Innovations Drive Product Upgrades
Advancements in smart packaging technology have led to innovative bottle cap designs. Some premium olive oil bottle caps now incorporate:
Controlled oil dispensing valves
Traceable QR codes
These features enhance the overall consumer experience and improve product functionality.
Olive Oil Cap Material
1. Food-Grade PP (Polypropylene) Plastic
Most 31.5x24mm olive oil caps are made of PP (polypropylene), which offers the following benefits:
Heat-resistant, suitable for various environments, and not easily deformed.
Chemical-resistant, ensuring no reaction with olive oil, maintaining its purity.
Non-toxic and safe, compliant with food contact material safety standards.
2. TPE or Silicone Sealing Rings
To ensure excellent sealing performance, some bottle caps include an embedded TPE (thermoplastic elastomer) or silicone sealing ring, which:
Effectively prevents oil leakage
Extends the shelf life of olive oil
3. Aluminum-Plastic Composite Material (For Premium Packaging)
High-end olive oil brands use aluminum-plastic composite materials, where:
The outer layer is made of aluminum alloy
The inner layer is made of food-grade plastic
This design enhances both aesthetic appeal and cap durability.
HAOMEI Aluminum Olive Oil Cap Size Options
(1) 31.5x24mm
Ideal for small to medium olive oil bottles (250ml~1L)
Excellent sealing properties
Commonly used for glass bottles
(2) 30x24mm
Slightly shorter than 30x24mm
Suitable for shorter bottle necks
Easier to open and seal
Ideal for 500ml and smaller glass/PET bottles
(3) 36x24mm
Larger diameter than 31.5mm
Suitable for wider-neck glass bottles
Commonly used for high-end custom olive oil packaging
(4) 38x18mm / 38x24mm
Larger diameter, allowing for faster oil dispensing
Commonly used for 1L~2L olive oil bottles
Suitable for both glass and plastic bottles
(5) 45x22mm / 45x28mm
Designed for family-size or commercial olive oil bottles
Allows a larger oil flow
Ideal for 2L and larger packaging
We also offer a wide selection of accessories that are often helpful tools for pouring vinegar and oil. You can order from our selection of sizes or have the caps and accessories custom-made to fit your bottles.
As a large packaging material manufacturer, HAOMEI Aluminum specializes in the production of olive oil aluminum caps, olive oil plastic caps, aluminum plastic anti-counterfeiting bottle caps, aluminum anti-theft caps, plastic bottle caps and other products. Our products are available in a variety of types and sizes, suitable for bottles of any size, and can also be customized according to customer needs. We provide printing processes, including top and side hot stamping, UV ink printing, etc. Our products are exported to many countries overseas, with factory direct sales, preferential prices, and samples available, so customers can order with confidence
