Teamwork Packaging

Induction Sealing Labeling and Lot Coding

What is induction sealing, labeling and lot coding?

Induction sealing, also known as cap sealing, is used to seal product inside glass or plastic containers. The underside of a cap is fitted with a multi-layered liner that is pressed onto the container top. The container then passes under an induction coil which transmits an electromagnetic field. The field causes the multi-layered liner to detach from the cap and bond with the container, forming an airtight sealed top.

Labeling is the process of applying a separate but associated label to any product. The label is designed for protective, instructive, convenience, marketing or security purposes. There are limitless possibilities as each label has different needs. Labeling is pressure sensitive. It can be clear, opaque, vinyl, foil, plastic, paper, or a form label (often a little booklet label containing information).

Lot coding is used to track production batches by labeling each batch with a unique identification number. Each product in a batch is stamped with a non-smearing ink that records the year, date and location of production.

How to read a lot code:

Typically, a lot code is divided into 3 main parts: The year, date and location of production.
10012SB
10 = Last two digits of production year. (2010)
012 = Day starting from January, 365 being December 31 (January 12th)
SB = Name/location of production. (Teamwork Packaging’s San Bernardino facility)