
Polymer caps are designed for the airtight sealing of PET bottles, as well as bottles for vegetable oil, household chemicals, and other products. They provide reliable product protection and maintain seal integrity during transportation and storage.
ALFAPET manufactures closure caps in PCO 1810, PCO 1881, and OIL standards, ensuring compatibility with most filling lines.The product range includes 28 mm, 32 mm, and 48 mm caps with various weight options: PCO 1810 — 3.3 g, PCO 1881 — 2.2 g and 2.35 g, OIL — 4.5 g, 1.85 g, and 3.35 g.
The production of caps is carried out using high-precision injection molding, ensuring consistent thread geometry, accurate sealing, and controlled opening torque — delivering a high level of reliability and product quality.
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Polymer caps
We offer closure caps for PET preforms in 1810, 1881, and OIL standards, available in any color option. The caps come in weights of 1.85 g, 2.2 g, 2.35 g, 3.3 g, 3.35 g, and 4.5 g, allowing you to choose the optimal solution for different types of packaging. Caps weighing 1.85 g, 3.35 g, and 4.5 g are produced in 32 mm and 48 mm diameters and are equipped with a convenient handle that ensures comfort and reliability during use.
PCO 1810 standard caps

Specification | Description |
|---|---|
Standard | PCO 1810 |
Diameter (mm) | 28 mm. |
Weight (g) | 3.3 g. |
Basic color options | Transparent, white, blue, green, red, black, yellow, orange, brown, etc. |
Packaging type for caps | Cardboard box |
PCO 1881 standard caps

Specification | Description |
|---|---|
Standard | PCO 1881 |
Diameter (mm) | 28 mm. |
Weight (g) | 2.2 g, 2.35 g. |
Basic color options | Transparent, white, blue, green, red, black, yellow, orange, brown, etc. |
Packaging type for caps | Cardboard box |
Oil standard caps

Specification | Description |
|---|---|
Standard | Oil (3 l, 5 l) |
Diameter (mm) | 32 mm, 48 mm. |
Weight (g) | 1.85 g, 3.35 g, 4.35 g. |
Basic color options | Transparent, blue, green, yellow, red, etc. |
Packaging type for caps | Cardboard box |
Oil standard hand

Specification | Description |
|---|---|
Standard | Oil (3 l, 5 l) |
Diameter (mm) | 32.8 mm, 53 mm, 56 mm. |
Weight (g) | 6.94 g, 8.5 g, 9.23 g. |
Basic color options | Transparent, blue, green, yellow, red, etc. |
Packaging type for caps | Polypropylene bags |
Logo printing on closure caps
We offer our clients not only PET preforms with closure caps but also the option of applying a branded logo directly onto the cap.
Logos are applied using pad printing — a versatile technology that delivers clear and durable images on surfaces of any shape or texture.
We use modern equipment from the German company Tampoprint, which ensures high print quality and long-lasting adhesion.
Printing can be done in one, two, or three colors, depending on the specifics of your corporate design. If needed, our specialists can assist in developing the logo design to ensure maximum brand recognition.
Pad printing is the perfect solution for those who want to emphasize the individuality of their product and enhance the visibility of their brand.


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