Hot stamping in carton packaging printing
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The status quo of new hot stamping technology in carton packaging printing - In the fierce market competition, in order to increase the added value of products, more effective packaging anti-counterfeiting, more and more packaging carton using hot stamping process. Hot stamping has common hot stamping, cold stamping, bump hot stamping and holographic hot stamping. The common hot stamping process is flat stamping and round stamping, because the round stamping is a line contact. It has the characteristics of hot stamping substrate, suitable for large-area hot stamping, high stamping accuracy, and is widely used.
Cold stamping does not require the use of a heated metal plate, but the transfer of the metal foil using a printed adhesive. The cold stamping process has low cost, energy saving and high production efficiency, and is a new process with great development prospects.
Bump stamping (also known as three-dimensional hot stamping) is the use of modern engraving technology to make the upper and lower male and female molds, hot stamping and embossing process is completed at one time, improving production efficiency. The mold made by electric engraving can be curved to achieve a three-dimensional relief effect that is difficult to achieve by a general corrosion method. The appearance of bump hot stamping enables the hot stamping and pressing process to be completed at the same time, reducing the number of processes and scraps caused by inaccurate overprinting.
The holographic logo uses computer technology to change the amplitude and frequency of the grating, making it more brilliant and clearer than the color of the calculated pattern. If such a hologram is used as a copy of the original, a large amount of holographic loss is generated, thereby achieving the purpose of anti-counterfeiting. The holographic logo can not only have very good anti-counterfeiting performance, but also can make the special number or text into the holographic logo according to the customer's needs, and the application on the high-grade carton packaging is more and more extensive.
Paper Sticker New Challenge
Details: A new challenge for paper stickers - flexographic printing has a large share of the merchandise label market, and commodity labels play an important role in merchandising. Therefore, the product label must be designed beautifully, conspicuously and enticingly, so that people can be reluctant to look at it at a glance, and finally buy it. As the saying goes, "love at first sight" best represents the role of the product label.
There are many varieties of commodity labels, and they are constantly developing with the development of markets and technologies. In recent decades, pressure-sensitive labels (or self-adhesive labels) have become more and more popular in the label market due to their ease of use. However, it is not necessarily possible to maintain such a large growth rate in the future. Because the pressure-sensitive type also has its inadequacies, the most important ones are easy to be counterfeited. Therefore, in recent years, the application of non-pressure-sensitive labels has also increased. According to the survey results of more than 800 users of various packaging containers in the United States, Canada, and Mexico, the North American Commodities 2001 research report believes that the number of labels transferred from pressure-sensitive labels to other methods will be as follows in the next three years:
1. Steering sleeve type accounts for 13%
2. Steering in-mold forming accounts for 9%
3. Turn to direct screen printing accounted for 6%
4. Maintain 72% of the pressure sensitive type
This is related to the growing popularity of commodity packaging containers in the manufacture of plastic instead of glass or metal materials. According to statistics: in recent years, the plastic container market in North America is 11 billion US dollars, with an annual growth rate of about 10%, of which PET (polyester) is the most, followed by HDPE (high density polyethylene), PC (polycarbonate), PP. (polypropylene), PVC (polyvinyl chloride), etc.
1. The so-called roll-type labels are mostly plastic film type (including sleeve type, wrap-around type, heat-shrink type, etc.); most of the beverage containers used for PET manufacture are packaged with carbonated drinks, fruit juices, and ready-to-use. Type tea drinks, etc. Because PET containers are suitable for hot filling.
2. The so-called in-mold forming refers to placing the printed label in a molding mold of a plastic container. When the plastic container is molded in the mold, the label is adhered to the surface of the container in a molten state, and is fixed and fixed after cooling. It is best for HDPE containers.
In the pressure-sensitive product label, there are two major categories of paper and plastic film. They have the same advantages: easy to process, suitable for a variety of printing processes, and easy to store, save space, can be used according to the variety at any time. However, the latter is superior to the former in terms of water resistance, abrasion resistance, tear resistance and the like. Some films, such as polyolefins, are particularly resistant to heat and freeze, and are therefore suitable for labeling food or beverage packaging that requires both high temperature sterilization and hot filling, followed by cryopreservation. For example, BOPP (Double Oriented Polypropylene) is not only resistant to high temperature and freezing, but also resistant to sour and odor without discoloring the ink. These characteristics of plastic film labels are suitable for the environmental requirements of online production and processing of foods and beverages, and are welcomed by merchants.
From an aesthetic point of view, the printing effect is better because the film surface is generally smoother than the paper. Secondly, the transparency of the film is high, and it can be made into a glass-like container to make the image clear and unlabeled, and has a distinctive effect. Moreover, it can be used repeatedly and repeatedly, without damage, and the cost is reduced. In addition, the film type label can also be made opaque if necessary, and some merchants make it a two-sided label. The front side prints the color logo pattern, the reverse side print instructions, the date of manufacture, the shelf life, etc., and the transparent adhesive is attached to the transparent glass or plastic container. As long as the transparent liquid is contained inside, the user can easily see from the back side to the reverse side of the label. Content. If it is a round transparent container, it can also function as a magnifying glass.