Cold foil transfer technology

Cold foiling is a process in which an adhesive is first applied to a substrate and a pattern of anodized aluminum (aluminum foil) is combined to form a pattern; a hot plate or a heated roller is not required. Hot stamping. In the past 5-10 years, only a few companies have been able to commercialize this process. Now, we refer to several leading foreign companies that apply this technology and introduce the latest developments and related experiences to everyone.
Advantages of cold foil transfer Fast set up (set up)
No need for metal bumper plates to save upfront processing costs Short / long version of the game is a good weapon to advance into the new market space Good printing effect faster than the hot stamping production speed in the processing plant within the rapid replacement of the production process turnover cold foil transfer what do you need?
UV printing/UV flexo printing machine Medium hardness printing plate UV curing adhesive compound unit (hardness 85 or higher)
Cold foil type Cold foil
Gripper roller (upper roller rubber/lower roller steel)
UV light (at least 400 watts per inch)
The important anilox roller for successful application of various specifications of anilox roller should be carefully selected to match the plate design and printing material Unwinding and rewinding The composite device must run well The tension of the aluminum foil web must be well controlled According to different substrates, clamps The pressure of the holding roller can adjust the impurities on the printing material to affect the quality and the curing effect of the adhesive. The hardness of the holding roller must be matched with the plate design and the printing material. The registration marks on the plate can significantly improve the quality of the processing process. The cloth material or the filler material (paper or cardboard, etc.) must be protected against pretreatment of the impregnated film material or the pre-coating speed on the upper surface is recommended to be between 150 and 300 fpm (feet per minute). With two 600 watt UV lamps per foot, good results are achieved at speeds of about 300 fpm.
The peeling angle is as small as possible when the electrodeposited aluminum is peeled from the substrate to ensure the fine lines of the image. Types of Adhesives There are two different types of adhesives: radiation-curable and cationic (Cationic). The difference between the two is that the radiation curing type reacts only when the UV light is exposed, and the latter has an "initial curing" process to make it become sticky, and then it is completely cured by the "post-curing" process. Which adhesive is selected is determined by the setting of the printer.
Ray curing methods 1. Printing adhesive 2. Composite aluminum foils to the surface of the material 3. Composite foils and materials are cured by UV lamps, and aluminum foil is tightly adhered to the material 4. Strip aluminum foil (may require die cutting / Stripping and other processes)
Cationic method 1. Printing adhesives 2. The printed material is cured by the UV lamp, making the adhesive viscous. Composite aluminum foil to the surface of the material 4. Strip aluminum foil (may require die cutting/stripping process)
Precautions Care must be taken to keep the printing device absolutely clean and free from dirt. It is recommended to implement a variety of special cleaning measures to ensure the best results. The above information is for reference only, and the details need to be tested by customers to determine the applicability and reliability of this process. . This article describes standards and guarantees that cannot be considered as good quality production. (US Head Office)