+86 137 0938 2367



What is IML in packaging?

Mar. 16, 2023

In-Mold Labeling (IML) is a technique of decorating plastic products during their molding process. It involves the insertion of a pre-printed label into the mold before the injection of the plastic. As a result, the label becomes an integral part of the product, making it more durable and resistant to wear and tear. IML is widely used in the packaging industry due to its numerous benefits, such as better branding and cost-effectiveness.


IML in Packaging: The Basics


IML involves a three-step process: printing, molding, and labeling. The first step involves the printing of the label on a special substrate that can withstand high temperatures and pressure. The label is then inserted into the mold using robotics and automation, which ensures precise placement. Finally, the molten plastic is injected into the mold, where it fuses with the label, creating a seamless and durable product.

IML dairy food packaging


IML in Packaging: Benefits


One of the primary benefits of IML is that it provides excellent branding opportunities. Since the label becomes an integral part of the product, it offers a permanent and high-quality decoration that is not easily scratched or damaged. This feature is particularly beneficial for packaging products that need to withstand harsh environmental conditions or frequent handling.


Another advantage of IML is its cost-effectiveness. The process eliminates the need for separate labeling and packaging operations, reducing production time and costs. Additionally, the high level of automation involved in IML reduces the possibility of errors and increases production efficiency.


IML in Packaging: Applications


IML is widely used in the packaging industry due to its versatility and efficiency. It can be applied to various products, including containers, lids, and cups. Additionally, IML is compatible with various plastic resins, such as polypropylene, polystyrene, and polyethylene.


One of the most common applications of IML in packaging is in the food and beverage industry. IML technology allows for the creation of vibrant and eye-catching packaging designs that can increase the appeal of a product on the shelf. Moreover, IML labels are food-grade and can withstand the high temperatures and pressures involved in food processing.


IML is also used in the cosmetic and personal care industry. The technique allows for the creation of intricate and detailed labels that can enhance the visual appeal of a product. Moreover, IML labels are water-resistant and can withstand the moisture and humidity typical of bathrooms and other wet environments.

400ml IML Plastic Ice Cream Container


IML in Packaging: Future Outlook


IML technology is rapidly evolving, with new innovations and advancements being made in the field. One of the latest developments in IML is the use of digital printing, which allows for greater flexibility and customization. Digital IML enables the printing of small batches of labels with unique designs, reducing the need for costly tooling and setup.


Another promising development in IML is the use of sustainable materials. With the increasing focus on environmental sustainability, the packaging industry is exploring ways to reduce waste and minimize the environmental impact of their products. IML labels made from bio-based materials or recycled plastics are being developed, providing a more sustainable alternative to traditional labels.




IML technology offers numerous benefits to the packaging industry, including improved branding, cost-effectiveness, and versatility. Its use in the food and beverage, cosmetic, and personal care industries is widespread, and new developments in the field are constantly being made. With its ability to enhance product aesthetics and functionality, IML is expected to play a significant role in the packaging industry's future.


Henglong Plastic's main core products are IML container, which is mainly used for food packaging, including ice-cream tub, margarine tub, biscuit box, yogurt cup, and coffee cups, sauce cups, etc. Contact us for more information!

Copyright © Fujian Henglong Plastic Industrial Co., Ltd. All Rights Reserved Sitemap | Powered by Reanod