Cold foil printing, also known as cold foil stamping, is a modern method of printing metallic foil on a substrate in order to enhance the aesthetic of the final product. Cold Foil Printing can be done two ways, through a dry lamination process or through a wet lamination process which is dominant in the flexo label industry.
How It Works: Using a standard printing plate, an image is printed onto a substrate with the use of a UV-curable cold foil adhesive. A UV dryer then cures the adhesive which becomes tacky. Foil spools from an unwind and is nipped to a substrate.
Foil sticks to the tacky adhesive on the substrate, and an image with a bright foil surface is created. Foil that does not adhere to the adhesive remains on a thin polyester liner and waste is directed to a rewind spool. Because the adhesive is applied on press like a conventional ink, no expensive stamping die has to be created.
Once printed, the surface of cold-foil images may be varnished, laminated or encapsulated in order to provide a hard-wearing, durable surface. Some printing substrates are unsuitable for cold foil transfer. The best results are obtained on glossy coated papers and papers with a smooth surface.
Benefits: The process does not require stamping tools, but instead uses printing plates, which are cheaper and can be made in a few hours. In contrast, delivery time for an engraved or etched stamping tool can be up to two weeks. Cold foiling is also print receptive. Cold foil surface has low surface energy and in case the overprint is small, only then it will adhere.
With technological advancement, several manufacturers have come up with a more printable range of cold foils in the market. The popularity of cold foil printing is growing worldwide and several companies are opting for the procedure because of its speed and cost effective qualities.
How It Works: Using a standard printing plate, an image is printed onto a substrate with the use of a UV-curable cold foil adhesive. A UV dryer then cures the adhesive which becomes tacky. Foil spools from an unwind and is nipped to a substrate.
Foil sticks to the tacky adhesive on the substrate, and an image with a bright foil surface is created. Foil that does not adhere to the adhesive remains on a thin polyester liner and waste is directed to a rewind spool. Because the adhesive is applied on press like a conventional ink, no expensive stamping die has to be created.
Once printed, the surface of cold-foil images may be varnished, laminated or encapsulated in order to provide a hard-wearing, durable surface. Some printing substrates are unsuitable for cold foil transfer. The best results are obtained on glossy coated papers and papers with a smooth surface.
Benefits: The process does not require stamping tools, but instead uses printing plates, which are cheaper and can be made in a few hours. In contrast, delivery time for an engraved or etched stamping tool can be up to two weeks. Cold foiling is also print receptive. Cold foil surface has low surface energy and in case the overprint is small, only then it will adhere.
With technological advancement, several manufacturers have come up with a more printable range of cold foils in the market. The popularity of cold foil printing is growing worldwide and several companies are opting for the procedure because of its speed and cost effective qualities.