Industry knowledge
The difference of Cold Foil Printing Material and Hot Foil Printing Material
Cold foil printing and hot foil printing are two distinct techniques used to achieve metallic or foil effects in printing. Here are the key differences between cold foil printing material and hot foil printing material:
Cold Foil Printing:
Process: In cold foil printing, a metallic foil is applied to a substrate using a cold foil adhesive. The adhesive is first applied to the substrate in the desired areas using a printing plate or cylinder. The foil is then transferred onto the adhesive, and any excess foil is removed, leaving behind the desired metallic effect.
Temperature:
Cold foil printing does not require high temperatures. The adhesive used in this process is typically UV-curable, and the foil is applied at room temperature or with minimal heat exposure.
Inline Process: Cold foil printing is often performed as an inline process, meaning it can be integrated into the printing press alongside other printing techniques, such as offset or flexography. This allows for simultaneous printing and foiling, enhancing efficiency and productivity.
Substrate Compatibility: Cold foil printing can be applied to a wide range of substrates, including paper, cardboard, self-adhesive labels, and flexible packaging materials. It offers flexibility in choosing the base material while achieving the metallic effect.
Hot Foil Printing:
Process: In hot foil printing, a metallic or colored foil is transferred to the substrate using heat and pressure. The foil is placed between the printing plate or block and the substrate, and pressure is applied to transfer the foil onto the surface. The process typically involves using a heated die or plate to melt the foil and adhere it to the substrate.
Temperature: Hot foil printing requires high temperatures to activate the adhesive on the foil. The heated die or plate can reach temperatures ranging from 100 to 180 degrees Celsius (212 to 356 degrees Fahrenheit) to achieve proper adhesion.
Standalone Process: Hot foil printing is often a standalone process, meaning it is performed separately from other printing techniques. It involves a dedicated hot foil stamping machine or press specifically designed for the application.
Substrate Compatibility: Hot foil printing is commonly used on materials such as paper, cardboard, and plastics. The selection of the substrate is crucial for hot foil printing, as some materials may not withstand the high temperatures involved.
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