The current status and new technology of packaging caps (2)

(II) Crown type tinplate easy open cover

Currently, there are two types of crown-type easy-open covers that can be seen on the market. One is on the body of a crown cover, and a rivet is used to rivet a pull ring; the other is to make a body on the crown cover body. Associated pull rings, no matter which one is made of aluminum. Due to the poor hardness of aluminum, it is currently only used for non-gasified beverage bottles.

Beijing Institute of Machinery Industry Automation uses the experience of manufacturing non-standard product lines and the hardware and software to produce large-opening tinplate easy-open covers for many years, and develops and manufactures crown-type easy lids made of tinplate. This kind of cover puts the pull ring on the top of the cover. The external dimensions of the cover are the same as those of the traditional crown cover, and can smoothly pass the capping machine of the current domestic and international filling lines. The institute has now completed the design and manufacture of crown-type easy-open cap production lines and special molds.

(c) Side pull-type easy cover

The side pull ring cover produced by Shandong Yutai Dongguan Bottle Cap Co., Ltd. invested a large amount of full-automatic production lines. It rewrites the history of domestic and foreign beverage bottle crown caps to open the tool, and the grade of the bottle caps. With anti-counterfeiting capabilities to a higher, newer level. The easy-to-cover lid's unique appearance and exquisite color printing are very decorative, novel, unique and beautiful, and have the effect of improving the grade of drinks and increasing the market promotion. In addition, the easy-to-open lid sealing performance is good, and it is easy to pull, which increases the expansion of beverages in the consumer market such as transportation trips, tourist attractions, public entertainment venues, and so on, so that the side pull-type easy lid is favored in the beverage industry. The original bottle cap decorative new perspective provides a choice for the development of high-end beverages and new product packaging seals, as well as a business opportunity.

(d) Thermochromic invisible fluorescent display high-grade bottle cap

Zhejiang Zhongyao Zhongyao Plastic Industry Co., Ltd. uses a new type of cap anti-counterfeiting technology to develop a thermochromic invisible fluorescent display premium cap. The bottle cap uses a printing technique and a bottle-opening method to perform anti-counterfeiting. When the surface of the bottle cap is heated above 50° C., the font disappears or discolors, and the original color is restored when cooled to room temperature. With the counterfeit ultraviolet rays irradiating the surface, an invisible anti-counterfeit code or font can be displayed, and the lid is destroyed when the bottle is opened. At present, the bottle cap has been used by a number of companies such as “Jiangkou Alcohol” and has achieved very good anti-counterfeit effect.

(E) New beer bottle liner

The United States has invented a new type of beer cap inner liner that can be automatically vented. Its distinctive feature is that the beer bottle can be automatically deflated when the internal pressure is close to the ultimate pressure that the beer bottle can withstand. Such inner liners not only exhibit excellent sealing under moderate pressure, so as to ensure that beer, which is extremely sensitive to odors, does not deteriorate due to infiltration of contaminants (such as O2) in the environment. No leakage of CO2 inside the bottle affects the taste of the beer. And from the perspective of food safety, this new inner liner has the function of automatic deflation when the internal pressure of the beer bottle approaches the extreme pressure that the bottle can withstand, avoiding the beer exposed to high temperature or sunlight for a long time. The risk of bottle breakage or explosion caused by the high pressure automatically generated in the bottle.

Launched by the United States, the Smart Cap crown cap has an oxygen-absorbing compound insert embedded in the cap to absorb the oxygen in the headspace of the beer bottle through the holes in the liner. The shelf life of the beer can be extended from 3 to 4 months. 4 to 6 months.

(VI) Novel bottle caps

Germany's Jayeare has introduced an easy-to-open bottle cap designed specifically for the elderly and the sick. In use, by pressing a button, the inner spring plate is actuated to open a hole in the bottle cap, which can be poured out from the hole, which is convenient and does not require force to unscrew the bottle cap. The German company Poiytop has developed a special bottle cap that prevents children from opening bottles and can automatically measure. On this type of bottle cap, there is a narrow slit. After the bottle cap is reversed, the liquid in the container flows out through the narrow slit. Once the prescribed dose is between 5 and 50 mm, the outflow is automatically stopped and the measurement is accurate. In addition, Bemas has also developed a square bottle cap that can be matched with 125mm, 200mm and 250mm square polyethylene bottles, which can tightly seal the bottle mouth.

(7) New type barrier seal cap

Products such as fruit juices and oils are very sensitive to oxygen and are susceptible to deterioration due to the influence of oxygen. The quality and shelf life of the products must depend on the use of high barrier seal caps that can both block oxygen and absorb oxygen. .

Recently, DS-CHemic has developed an active barrier compound technology that has no effect on product quality and can block volatile organic compounds. This new technology provides excellent performance for volatile organic compounds that will not chemically react with the package contents.

Alcoa CSI researched and developed a new variety of barrier materials for sealing caps and gaskets. Oxy Block Sealing Cover Co., Ltd. introduced a universal sealing cap for summer juice and fruit juice beverage bottles from North America. The specifications are diameters of 33mm, 38mm and 43mm. The sealing cap is the same as the heat of the product. Filling is used together with aseptic filling and packaging to achieve better results.

A barrier sealer developed and produced by Italian company pelliconi, which absorbs residual oxygen in the contents and headspace, is called “DAPsorb SOLAR”. This lid is a quick-fitting cap (SnapFit Cap) for plastic beer bottles. It is used in beer, alcoholic beverages, and other products in addition to beer. Among the other products of the Paricon company is a high-barrier sealing cap called “MP301”, which is a stamped one-piece opening cover that incorporates an oxygen absorber in the cap, suitable for low-cost beer in developing countries. Sealing cap for the bottle.

(8) Anti-counterfeiting technology for metal bottle caps

The process of printing metal caps has many similarities with two food cans, such as the method of punching, the printing method, and so on. From a printing point of view, there are three differences between them:

1. The ratio of can diameter to can height of metal caps is far less than that of two food cans, which means that metal caps are deformed more severely in the manufacturing process, so the material or paint used for the two will be different.

2. The metal can lid has a smaller can diameter. Because the opening of the bottle cap is generally small, the can body can be used to express the graphic area is much smaller, so the picture for the cap is more delicate.

3. Most metal caps need not be heated after molding. Food cans often require heating procedures to achieve sterilization, and the heat resistance of the paint must be considered. Metal bottle caps do not have such concerns.

The advantages of metal bottle caps: New materials and technologies are absolutely indispensable tools for anti-counterfeiting. It is also a good idea to use natural variability. Metal printing cans, especially long-necked caps, have variability in the production process that makes it difficult to produce a fully controllable deformation behavior; and because the dots on the lid can reflect the deformation behavior, even the dot printing patterns can be identified using The difference, thereby achieving anti-counterfeiting effect. From the results of the experiment, the use of the inverse algorithm should be able to achieve a certain degree of hard replication. In addition to the anti-counterfeiting function, there are no similar products that can be compared with the bright colors, delicateness, and correctness of finished products made using the inverse algorithm. Another advantage of this method is that the production speed, cost, and production line are all superior to the general deformation adjustment method in the production process.

(9) Special type twist-off proof cover

At present, the most used in wine packaging is a twisted cover (also called a security cover), which is divided into a plastic twisted cover and an aluminum twisted cover according to different materials. The structural characteristics of the twist-off cover determine that the twist-off cover can only be used once. The cover has been damaged after the bottle is opened, and it cannot be used again. Therefore, it has the function of anti-counterfeiting.

The special type of twisted cover has better anti-counterfeiting capabilities. The hemisphere protrudes from the top of the ordinary twist-off cover, creating a distinctive feature. Although mold making and processing are difficult and the cost of the lid is high, its anti-counterfeit effect is beyond doubt.

The combination of a special type of twisted cap with a special bottle design will receive better anti-counterfeit effect. If the compatibility of the bottle with the bottle cap is reduced, the coupling with the bottle cap is improved, that is, a kind of bottle must use a bottle cap produced by a certain factory. In this way, it will be more difficult to imitate well-coupled bottles and caps at the same time, and thus have a good anti-counterfeiting effect.

(10) Anti-counterfeiting and easy opening

Easy opening is also a good security cap. It is difficult to open the cover easily, and many companies have fully considered the need for anti-counterfeiting before use, and therefore use a poorly interchangeable design when manufacturing, and the universal type of the cover is not good, so it has a certain anti-counterfeiting effect. Another anti-counterfeiting effect of the easy-open lid is that special equipment is needed for use, and thus the use of easy-open lids is less likely to be counterfeited.

In summary, regardless of aluminum bottle caps or plastic bottle caps, due to the continuous development of science and technology and the continuous development of capping methods, any viable caps should be mechanized, large-scale and low-cost. Many functions, no pollution, can also be recycled. Therefore, in the future bottle caps, new caps with anti-theft function will become the mainstream of the caps.