Your Guide to In-Mold Labels

~ by Nic Neustaedter, think4D Accounts Manager

In-Mold Labeling (also known as IML) is a decoration technique that has revolutionized the world of packaging.  It’s a process in which pre-printed labels or decorations are placed into a mold before the package material (usually plastic) is injected, creating a fusion between the label and the container during the molding process. 

The labels are typically made from materials like polypropylene, polyethylene, or polystyrene, all of which offer excellent printability, flexibility, and durability.  IMLs can be printed using various printing technologies, including offset, digital, or in the case of think4D, flexographic.  Each method offers its own unique advantages in terms of print quality, colour accuracy, and production efficiency.  The advantages of flexographic printing include versatility, quicker production (as compared to the other methods), and the colour capabilities are immense as a flexo press prints in CMYK.

A wide variety of industries use IMLs.  The packaging industry, of course, allows for visually appealing and durable labeling solutions.  In-mold labels are also used in the automotive industry for both interior and exterior components like dashboard panels, trim pieces, and emblem badges, as well as in consumer electronics such as smartphones, tablets, and laptops. 

A primary reason for its use is the durability of in-mold labels.  They can withstand rough handling and shipment-induced scuffing.  Because the label is fused with the container, IMLs are resistant to peeling, cracking, and fading, ensuring your packaging looks pristine throughout its lifecycle.  They are also resistant to UV exposure and chemicals and have the ability to withstand heat and moisture.

Don’t even get us started on the design and artwork considerations…we could go on for hours!  IMLs offer branding opportunities that can’t be matched.  With this process, graphics and decoration like foil, glitter, etc, are integrated directly into the packaging, and it will look as good as new until the container is recycled. 

In our current climate where sustainability is a big consideration, in-mold labels can pass the test.  Since the packaging and the label are made with the same material, the package is fully recyclable…no need to separate the label for full recyclability!  This also helps to reduce energy consumption as the labeling and manufacturing process is combined.

There are also no adhesives that are used, which eliminates the potential contamination from adhesives that can affect the quality of the materials.  The durability of the IMLs means that the packaging can be reused multiple times before recycling.  They are also a powerhouse at reducing the overall carbon footprint of the process.  IML packaging is often lighter than alternatives like glass or metal, which reduces transportation emissions.

Consider trusting think4D with your next in-mold label project…we’re dependable and devoted to quality with experience and expertise you can count on.