![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Hot stamping is a very important metal surface finishing method and an effective way to enhance the visual effect of printed products. In recent years, hot stamping has been favored by the self-adhesive label market, and its application has become more and more widespread. This is mainly due to its brilliant and colorful effects on self-adhesive labels, which make the products have better shelf effects. At present, the hot stamping process is divided into hot stamping and cold stamping. By observing the hot stamping effect of the self-adhesive label, it can be determined which method is used for hot stamping. The edge of the cold stamping pattern is flat and has no indentation, and the edge of the hot stamping pattern has obvious indentation. The self-adhesive label job that the author touches often needs hot stamping process. Let's talk about some opinions on hot stamping and communicate with everyone.
Hot stamping process
At present, hot stamping has become a very mature packaging finishing process. Hot stamping is to apply hot melt adhesive on the back of pre-hot stamped aluminum. When hot stamping, the hot melt adhesive is melted by the pressure of the hot roller to achieve the bonding of the electrochemical aluminum and the printed product.
Hot stamping is mainly to stamp all kinds of colors and styles of anodized aluminum, and the decorative effect is obvious. Now, hot stamping of a resin-based material having a hologram pattern can also be performed.
The non-positioning or positioning hot stamping process using aluminum washing technology and partially plated with an electrochemical aluminum pattern is currently applied on high-grade self-adhesive labels, which tends to have a finishing touch, and the anti-counterfeiting force is large and better. The quality of the packaging.
From the process point of view, hot stamping can be divided into two types: hot stamping and pre-printing and hot stamping. The hot stamping process is applied more on cigarette packs, and is mainly suitable for products that require large area hot stamping. Since the hot stamping is performed under heating and pressurization conditions, the hot stamping surface is plastically depressed. Due to the different height and material of the hot stamping surface and the paper surface during printing , the hot stamping surface and the paper surface have a sudden change in the dot and a clear hard edge contour. In addition, the overprint error often leads to a more abrupt and rough edge of the printed hot stamp. Therefore, in order to ensure the perfection of the product, a hot stamping frame is generally added on the edge of the hot stamping pattern, and then the convex pattern is pressed to better handle the problem.
In addition, on the hot stamping plate, the CNC embossing process is used to engrave the embossing and embossing, and then the hot stamping can make the pattern after hot stamping show a dazzling refraction effect, and the current application is also very wide. In order to achieve the above effects before the CNC engraving and bronzing version is not present, the first hot stamping and post-embossing are required, and two processing steps are required.
Cold stamping process
Cold stamping refers to the method of transferring an electrochemical aluminum foil to a to-be-printed product by using an adhesive. This method does not need to be heated, but the adhesive is directly coated on the position to be decorated. When transferring, the electrochemical aluminum foil is in contact with the adhesive, and the hot stamping is completed under the action of the adhesive and the pressure of the rubber roller.
In recent years, cold stamping has developed rapidly. The following two reasons are the key to boosting its development.
(1) Since the cold stamping is realized under the pressure of the adhesive and the rubber roller, the flat surface of the hot stamping surface is consistent with the flatness of the paper surface, and there is no difference before and after the printing suitability, forming a cold stamping with hot stamping and post printing. The model is strongly welcomed by the market.
(2) Hot stamping has a high degree of hot stamping. For example, KURZ can provide a cold foil strip with a screen line of 120 lines/inch. The hot-pressed dots are rounded and the edges are clear. This also allows hot stamping and printing graphics to be more effectively combined, making cold stamping more widely used.
In addition, cold stamping has the following advantages: low investment, and can be completed online; no need to heat, save energy, especially suitable for hot stamping of heat sensitive materials, such as film, heat sensitive materials.
At present, if the metal effect is achieved on the labels of wine, beer, alcoholic beverages, cosmetics and other products, cold stamping is the preferred finishing process. On the label of the daily chemical product, the combination of printing gold and cold stamping is often used. The difference between gold and cold stamping is that although the gold printing process can achieve a certain metal effect, there is still a certain gap with the real hot stamping effect. The reason is that even when using the best metal ink to ensure sufficient thickness of the ink layer, it is impossible to achieve the brightness of the hot stamping, which is determined by the fineness of the pigment of the metal ink. Even the best metal inks, because the pigment particles are thicker, the reflection of light is still mainly scattering; while the cold stamping is made of pure metal material with a smooth metal surface, so the specular reflection effect is better than the ordinary gold effect. Much stronger.
Comparative analysis of cold stamping and hot stamping
Cold stamping and hot stamping have their own advantages. In actual production, there are also wonderful practices that combine the two processes. For example, the combination of cold stamping and printing, plus the hot stamping of the hot stamping, the label is beautifully decorated.
The following is a comparative analysis of cold stamping and hot stamping from two aspects of processing mode and production cost.
Processing method
Hot stamping uses a flat stamping method. For non-patterned, non-positioned hot stamping, single-cycle skipping can save hot stamping foil strips; if special design hot stamping with design pattern and positioning is used, according to the hot stamping position of the printed sheet, typesetting In the way, the stepping method of nesting a small period of a large period is adopted, and then the positioning correction is performed to enable the hot stamping foil tape to be effectively utilized. After the machine is set up normally, there will be almost no additional waste.
The round paper round hot hot stamping is more wasteful than the flat stamping hot stamping.
The common models used in cold stamping are the hot stamping mode with round paper rounding. The length of the hot stamping foil strip is the same as that of the web printing material, and it is not possible to perform the stepping operation. Therefore, the waste of the hot stamping foil strip is more Big.
2. Production cost
In addition to the pattern, the special edition hot stamping foil tape to be positioned is more expensive, the hot stamping foil strip of the pass version is cheaper than the cold stamping foil strip. In the actual production process, hot stamping saves hot stamping foil tape than cold stamping. However, hot stamping does not have a hot stamping accuracy of registration.
In short, hot stamping and cold stamping have their own advantages and disadvantages. In the production of self-adhesive labels, we can weigh two kinds of hot stamping processes according to the customer's design concept and quality requirements, so that customers can be satisfied and offer more exquisite label products for the market. .
The above content is selected from the 4th issue of Keyin Media's " Label Technology " in 2010. For more journal content, please pay attention to the journal channel .
Powder free or powder ,Blue Vinyl Glove
1. powdered free and powdered
2.colour:Blue vinyl glove.
3.passed FDA510K ,EN455,EN374,ISO9001,ISO13485 etc.
4.AQL 1.5,2.50,4.0 ,Medical grade and Industrial grade ,food grade ,electronic grade etc.
5.no latex and non sterile
6.beaded cuff,sigle use only
7.soft and comfortable.
8.OEM or ODM packing
9.usage widely for hospital medical examination,health care,hotel ,restaurant ,home cleaning etc
Blue Vinyl Glove,FDA Vinyl Gloves,Blue Disposable Gloves,Blue Vinyl Medical Gloves
Zibo Hongye Shangqin Medical Science and Technology Co.,Ltd. , https://www.vinylgloves.cn