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The Influence of Different In-Mold Labeling on the Production



In-mold labeling (IML) has become increasingly popular for decorating plastic containers. It involves placing a pre-printed label inside the mold before injection molding, resulting in a container with a seamless and durable label. However, the choice of in-mold labeling process and label type can significantly impact the production and quality of in-mold labeling containers. This article explores the influence of different in-mold labeling methods, such as orange peel labels and composite film labels, on container production and quality control of  IML containers.

In-Mold Labeling Containers

IML containers offer numerous advantages, including enhanced product visibility, vibrant graphics, and increased shelf appeal. The labeling process eliminates the need for post-molding labeling operations, reducing production time and costs. However, the selection of in-mold labeling techniques and labels can affect the hardness and overall quality of the final product.

Orange Peel Label

Orange peel labels refer to labels with a textured surface resembling the skin of an orange. This textured appearance provides a unique visual effect, enhancing the container’s aesthetics. However, an orange peel label may influence the product’s hardness. Manufacturers must consider this factor during the production process and make appropriate adjustments to achieve the desired hardness.  Plastic packaging quality control measures should be in place to monitor the impact of orange peel labels on product consistency and maintain the desired hardness level across the production line.

Composite Film Label

Composite film labels are another commonly used type of in-mold labeling. These labels are typically made of multiple layers, including a base layer, print layer, and protective film layer. The label’s composition can influence the IML container’s overall quality. Manufacturers must carefully select the composite film label materials to ensure compatibility with the injection molding process and to achieve the desired visual effects. Quality control becomes crucial to maintain the label’s integrity and prevent defects such as delamination or peeling.

Production Adjustments

Production adjustments may be necessary to accommodate different in-mold labeling processes and label types. Factors such as injection molding parameters, label positioning, and mold design should be considered. For instance, the injection molding temperature and pressure might need to be modified to optimize the adhesion between the label and the container. The label positioning within the mold should be precise to ensure proper alignment and prevent distortions. The mold design should also accommodate the specific label type, allowing for smooth and consistent label placement during the injection molding process.

Quality Control

To ensure the production of high-quality IML containers, rigorous quality control measures should be implemented. Regular inspections should be conducted throughout production to identify defects or inconsistencies. This includes monitoring label adhesion, hardness, color accuracy, and overall label integrity. Automated inspection systems can aid in detecting and rejecting containers with subpar labeling results. Furthermore, feedback loops between production and quality control teams can help refine the process and address any issues promptly.

Wrapping Up

Different in-mold labeling techniques and label types can significantly influence the production process and quality of in-mold labeling containers. Factors such as the choice of orange peel or composite film labels can affect product hardness and overall appearance. Manufacturers must make necessary production adjustments according to the selected labeling method to ensure consistent quality. Robust quality control measures, including regular inspections and automated systems, are essential to detect and address any deviations from the desired standards. By understanding and managing the influence of in-mold labeling processes, manufacturers can consistently produce high-quality IML containers with visually appealing and durable labels.?

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