What is the method used to apply details to molded plastics in vacuum forming?

The method used to apply details to molded plastics in vacuum forming is screen printing. This technique is favored because it allows for the direct application of illustrations, designs, or patterns to the surface of the vacuum-formed plastic, ensuring a smooth and high-quality finish. Screen printing involves pushing ink through a mesh screen onto the plastic, which is effective for batch production and allows for vibrant colors and intricate designs.

In the context of vacuum forming, where products are often produced with detailed features, screen printing provides a versatile and efficient means of adding graphics post-formation. It is particularly advantageous when a large number of identical products are needed, as it enables quick and consistent application of detail across multiple items.

Other methods might not be as suitable for this application due to various reasons. For example, heat transfer is more suited for situations where a design needs to be thermally applied and isn't the primary method used in conjunction with vacuum forming processes. Embossing involves creating a 3D texture on the surface, which is more about shaping than printing, while hand painting is generally too labor-intensive and less uniform for large-scale production tasks typically associated with vacuum-formed items.