Understanding In-Mould Labelling (IML)
In-Mould Labelling (IML) is an advanced decoration process in which a pre-printed label is placed inside the mould before the plastic part is formed. When molten plastic is injected or blown into the mould, the label bonds with the material and becomes an integral part of the final product.
The result is a durable, high-quality container with seamless graphics and long-lasting print performance.
Common Materials Used in IML
In-mould labelling works best with plastics that offer strong bonding characteristics and high mouldability. The two most widely used materials are: Polypropylene (PP) – Lightweight, strong, and ideal for food-grade containers.
High-Density Polyethylene (HDPE) – Durable, impact-resistant, and suitable for personal-care and household products.
Both materials provide excellent compatibility with the IML process and support premium print finishes.
Where IML is Commonly Used
IML can be found across a wide range of packaging applications due to its premium appearance and superior durability. Typical uses include:
Personal-care packaging such as shampoo bottles, deodorant containers, and soap cases
Food packaging like yogurt cups, ice-cream tubs, butter containers, and deli/takeaway boxes
Cosmetic packaging including lotion bottles, skincare jars, and sun-care products
Household items such as detergent bottles, disinfectant containers, and other cleaning products
IML offers enhanced shelf appeal, scratch resistance, moisture resistance, and the benefit of combining moulding and labelling in a single efficient process—making it a preferred choice for modern brands.