4 shapes of lidding foil

What is a lidding foil?

A lidding foil is a thin sheet of material used to seal and protect the open face (the”lid”) of a container such as a food tray, jar, tub, bottle, or blister pack. It forms the final closure over the package opening and is designed to preserve product quality, provide tamper evidence, and support printing or branding.

Key features of lidding foil :

Prevents oxygen, moisture, light, odors, and contaminants from reaching the product, extending shelf life.

Designed to show if a package has been opened or compromised (for example, a foil that tears or peels away).

Heat-sealable or pressure-sensitive layers bond to the container rim to create an airtight seal.

Can include pull tabs, easy-peel features, or resealable liners.

Surface can be printed with logos, nutrition facts, lot codes, and expiry dates.

What are the different shapes of lidding foil? And what are their specific uses?

Generally speaking, lidding foil is designed to create a secure seal, protecting contents from air, light, and moisture. They are available in either “peel-able” or “un-peelable” configurations to suit a variety of product requirements. They are categorized into the following four shapes:

Round with a “V”-shaped lip

This lidding foill has a circular design with a “V”-shaped lip at the bottom (peel-able type). It is suitable for dry foods, purees, sauces, dips, condiments, beverages, and gelatin.

Round with a “U”-shaped lip

This lidding foil has a circular design with a “U”-shaped lip at the bottom (peel-able type). It is suitable for various vitamins and nutritional supplements.

Round without a lip

This lidding foil has a circular design (un-peelable type). It is suitable for preserving the freshness of tea and coffee products in tea bags and capsules.

Customization Shape

This lidding foil is available in square, rectangular, or other custom shapes, with a hidden tear-off lip at the bottom of the design. It’s suitable for dairy products such as spreadable yogurt, cheese, pudding, and butter.

Do lidding foil come in fixed or customized sizes?

Generally, lidding foil manufacturers offer a wide selection of die-cut shapes, allowing you to find the right shape for almost any container opening. Custom die-cut shapes can also be provided upon request.