PET Bottles DIN28 / PP28

PET bottles DIN28 / PP28 provide a larger-neck packaging format for pharmaceutical and healthcare products.

The Ø28 mm neck allows the bottle to work with compatible closure systems. Depending on the project, several functional closure concepts can be considered.

DIN28 and PP28 Bottle Neck

The neck finish is a key factor in closure selection.

Diameter, thread geometry and sealing surfaces must match the selected cap. Therefore, nominal PP28 or DIN28 terminology alone does not confirm compatibility.

The final bottle and closure combination should always be tested.

Closure Options

A compatible Ø28 mm bottle can support different closure functions.

These may include standard screw caps, tamper-evident closures or child-resistant designs.

In addition, selected dosing accessories may be used where the packaging configuration allows them.

Packaging System Development

The bottle and closure should be evaluated together from the beginning of the packaging project.

This simplifies component selection. It also helps identify compatibility issues before serial production.

Samples and Testing

Farmmash can provide technical information and samples for evaluation.

Testing should confirm closing performance, sealing, and functional compatibility with the intended product.