Koldfoil (Koldfoil) is an important breakthrough in printing technology in recent years. It combines traditional printing and laminating techniques, and is easy to operate. The printing factory can use the existing printing equipment to flexibly apply cold stamping to create a unique product. Different effects will not only reduce production costs, but also re-create the added value of products, and thus become a new trend in the future. Mr.J. Michael Rivera from American Amagic Holographics Inc. (U.S. Branch of Optical Laser Technology Co., Ltd.) has done a brilliant job in cold printing in the full range of UV printing planning and product suitability seminars. Introduction.
Cold stamping is a method of transferring foil to a substrate using glue. Its advantages are:
1. Can improve production efficiency and reduce costs: Cold foil can be combined with front-end printing, one machine to complete, the speed of operation, high production efficiency.
2. Low operating costs, suitable for small batch production.
3. Use printing alignment, high alignment accuracy.
4. Increase the variability of the print design, and can produce the effect of metallic ink.
5. To provide counterfeit printing effects: In conjunction with customized holographic technology, laser transparent materials, or combination with other anti-counterfeiting technologies, it can achieve a good anti-counterfeiting effect on securities and other printing.
6. Can be widely used in the printing industry and suitable for business proofing.
Cold press printing has been proven to be used in narrow flexo presses, narrow flexo presses, and waterless Offset machines.
Cold printing can be accomplished using either wet or dry lamination.
1. Wet method printing method ---
The image is printed on the substrate → The cold foil is attached to the substrate with a press roller → The UV glue on the substrate is dried with a UV lamp to make the image sticky → The excess foil is removed. However, precautions that must be taken when printing include:
(1) The glue can be printed on the aqueous solvent type and UV ink surface.
(2) There is a limit to the printing speed.
(3) The tension control of the foil and the substrate is very important.
(4) The pressure roller must be installed before and behind the UV lamp.
(5) Patterns such as thin lines, cutouts, and fine dots can be printed.
2. The printing method of the dry method is ---
The image is printed on the substrate → The UV glue on the substrate is dried with a UV lamp to make the image sticky → Immediately use the pressure roller to transfer the foil to the bonded image and remove the excess foil.
Precautions:
(1) The glue cannot be printed on the surface of undried water-based or solvent-based inks.
(2) The glue must not be too dry or dry.
(3) Fit within 5" behind the UV lamp.
(4) When the foil and the substrate are attached, a high hardness roller and high pressure must be used.
(5) The treatment and preservation of glue, such as general UV inks, as to how to choose dry or wet paste and what cold printing?
Dry coating can be applied to the following situations:
Dry lamination 1. Dots 2. Thin lines 3. Can be cold-printed on the UV surface 4. Substrate suitable for paper 5. Post-drying required 6. Must be applied at the correct printing speed. Wet lamination 1. Suitable for printing Medium- to large-area image 2. Can be printed on water-based and UV ink surfaces with cold stamping 3. Substrate suitable for film 4. No need for post-drying 5. Limited printing speed Finally, Mr. Rivera reminds that there is still a cold stamping application Several matters must be noted:
1. The quality of cold stamping depends on the quality of the glue being printed, so the printing experience is extremely important.
2. Cold foil printing can currently only be printed on smooth surfaces and has not yet been printed on rough surfaces such as leather.
3. The glue on the rough substrate will be absorbed so that the surface of the substrate will not have enough glue to print cold.
4. At present, it is only possible to use printing on roll-shaped substrates.
Cold stamping is a method of transferring foil to a substrate using glue. Its advantages are:
1. Can improve production efficiency and reduce costs: Cold foil can be combined with front-end printing, one machine to complete, the speed of operation, high production efficiency.
2. Low operating costs, suitable for small batch production.
3. Use printing alignment, high alignment accuracy.
4. Increase the variability of the print design, and can produce the effect of metallic ink.
5. To provide counterfeit printing effects: In conjunction with customized holographic technology, laser transparent materials, or combination with other anti-counterfeiting technologies, it can achieve a good anti-counterfeiting effect on securities and other printing.
6. Can be widely used in the printing industry and suitable for business proofing.
Cold press printing has been proven to be used in narrow flexo presses, narrow flexo presses, and waterless Offset machines.
Cold printing can be accomplished using either wet or dry lamination.
1. Wet method printing method ---
The image is printed on the substrate → The cold foil is attached to the substrate with a press roller → The UV glue on the substrate is dried with a UV lamp to make the image sticky → The excess foil is removed. However, precautions that must be taken when printing include:
(1) The glue can be printed on the aqueous solvent type and UV ink surface.
(2) There is a limit to the printing speed.
(3) The tension control of the foil and the substrate is very important.
(4) The pressure roller must be installed before and behind the UV lamp.
(5) Patterns such as thin lines, cutouts, and fine dots can be printed.
2. The printing method of the dry method is ---
The image is printed on the substrate → The UV glue on the substrate is dried with a UV lamp to make the image sticky → Immediately use the pressure roller to transfer the foil to the bonded image and remove the excess foil.
Precautions:
(1) The glue cannot be printed on the surface of undried water-based or solvent-based inks.
(2) The glue must not be too dry or dry.
(3) Fit within 5" behind the UV lamp.
(4) When the foil and the substrate are attached, a high hardness roller and high pressure must be used.
(5) The treatment and preservation of glue, such as general UV inks, as to how to choose dry or wet paste and what cold printing?
Dry coating can be applied to the following situations:
Dry lamination 1. Dots 2. Thin lines 3. Can be cold-printed on the UV surface 4. Substrate suitable for paper 5. Post-drying required 6. Must be applied at the correct printing speed. Wet lamination 1. Suitable for printing Medium- to large-area image 2. Can be printed on water-based and UV ink surfaces with cold stamping 3. Substrate suitable for film 4. No need for post-drying 5. Limited printing speed Finally, Mr. Rivera reminds that there is still a cold stamping application Several matters must be noted:
1. The quality of cold stamping depends on the quality of the glue being printed, so the printing experience is extremely important.
2. Cold foil printing can currently only be printed on smooth surfaces and has not yet been printed on rough surfaces such as leather.
3. The glue on the rough substrate will be absorbed so that the surface of the substrate will not have enough glue to print cold.
4. At present, it is only possible to use printing on roll-shaped substrates.
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