PVDC coating strip coating makes low-grade cigarettes effective

The effective reduction of low-grade cigarette packaging has always been a common concern of manufacturers and smoke film suppliers. PVDC coated strip film developed by Hainan Modern Enterprise Co., Ltd. has been successfully applied to Nanning Cigarette Factory, Liuzhou Cigarette Factory, Cixi Cigarette Factory, Wuhu Cigarette Factory, Hefei Cigarette Factory, Quzhou Cigarette Factory, Hainan Hongta Cigarette Co., Ltd., Harbin Cigarette factories and so on, the use of a year to show that this patented technology products can achieve five types of cigarette box of paperless packaging, a substantial reduction in cost purposes.
First, reliable product technology accumulation, research and development, and the actual demand of the Chinese cigarette industry to reduce the five types of cigarette packaging costs have spawned PVDC coated bar patented technology products.
Five types of cigarettes account for a large proportion of cigarette production and sales in China. The large-scale loss of five types of cigarettes is a problem that cannot be ignored. However, under the circumstance that the demand elasticity of the five types of cigarettes is very small, the scale of production and sales will basically be maintained. To reduce the loss, it is conceived that the paper strip box can be eliminated and the cartonless packaging can be realized, but a new type and suitable film packaging material is required. In order to understand this information, Hainan Modern Enterprise Co., Ltd. immediately organized the development of human and horse products, successfully launched the applicable product PVDC coating strip coating, and timely promoted to customers test machine, use, in June 2002 the first in China to achieve The customer application, up to now, has been steadily supplied to cigarette manufacturing enterprises in Guangxi, Anhui, Heilongjiang, Hainan and Guizhou provinces. In June 2002, it took the lead in implementing customer applications in China and obtained a patent (Patent No. 544269).
Hainan Modern Enterprise Co., Ltd. is a designated enterprise for the national cigarette supporting material production base. It has been engaged in the production, sales, and service of various kinds of cigarette films for more than 10 years. The company currently has one BOPP film production line and one BOPO film production line. PVDC coating Two film production lines with a total production capacity of over 10,000 tons. The main supply of film products are BOPP ordinary film, shrink film, BOPP laser holographic anti-counterfeiting film, PVDC coating (printing) film, etc., with a number of independent intellectual property rights and proprietary The technology is the most complete and specialized manufacturer in the domestic smoke film industry and the largest manufacturer of coated PVDC products in China. Among them, PVDC coating smoke film products have a market share of more than 70% in the domestic tobacco industry, and have accumulated rich product knowledge and customer service experience. Has been engaged in the production of various kinds of special purpose smoke film for many years. It possesses unique technical advantages of advanced production lines, multiple equipments, and a number of mature technologies. This has created favorable advantages for the Division to successfully develop PVDC coating film that replaces cigarette box packaging. condition.
Second, high barrier, high freshness, strong wear, do not adhere to the cigarette small film, PVDC coating film can meet the need to directly pack cigarettes without the cartons.
1. High barrier, fresh and fragrant, resistant to strong grinding. Since the advent of solid PVDC in 1930, PVDC has become the name for high barrier, and the packaging industry calls it the “Queen” of high barrier materials. Once the film materials such as BOPP, BOPET, BOPA are coated with PVDC, excellent high barrier properties can be obtained. The comparison data is shown in the following table:

Item BOPPBOPETBOPA Before coating After coating After coating After coating After coating Moisture penetration rate (WVTR) 4.7-7.04.7-6.2354.5372-40311 Oxygen permeability (OTR) 200012.4-7.8110540.35

The test data also tells us that a 23-micron-thick BOPP film with PVDC coating has a barrier property equivalent to a 1300-micron-thick BOPP film with no PVDC coating. The high barrier determines the high security. In this case, a lively example is a TV commercial of an American-made PVDC film product: two pieces of beef, one with a PVDC coated film pack, one with a different film pack, a group of dogs approaching, and a sniffing PVDC film pack The other one, the dogs smelled from afar, rushed to grab a bite. There are many examples in practical applications, such as "Modern Man" brand PVDC coating film has been in Baoji, Quzhou, Handan, Nanning, Lanzhou, Tianshui, Liyang, Wuhu and other cigarette factories and in the United States top 500 companies Johnson (Samsung) company , Taiwan Xu Fuji companies and other manufacturers successfully applied. PVDC film solves the starting point of the film wrinkling caused by the “swelling” phenomenon of red, blue and heavy-colored cigarette labeling inks in cigarette packaging, and the user has deeper understanding of the unique fragrance-preserving performance of cigarette mellow. The cigarette industry in Japan once used PVDC coated film to pack cigarettes. The main purpose was to preserve the fragrance and extend the shelf life. Cigarette weighers have large weight, large friction during the movement process, and smearing and fogging of the smoke film has always been a difficult problem. Using PVDC coating film, all this is solved. Because the PVDC copolymer molecules are tightly packed, the crystallinity is high, the surface rigidity is full, and they are naturally hard-wearing.
2, PVDC coating film and BOPP film can not be heat-sealed and adhered to each other. If the BOPP film is packaged directly without paper box packaging, the stripe film will stick to the small film, thus destroying the small package, so it is difficult to use the traditional BOPP film directly. Replace the box of paper. Material selection must consider that the heat seal between the film and the small film can not be adhered to each other. Therefore, PVDC is an ideal material.
The heat-sealing property of plastic film refers to the phenomenon that the surface of the film is melted to cause blocking at a certain temperature, pressure, and for a certain period of time. The reason why the two films can be adhered is that the materials of the two films have a certain degree of compatibility. If the two polymer components are not compatible with each other, they cannot be wetted and adhered to each other, so that the two-phase macromolecules completely repel each other, there is a clear interface between the phases, and they can be completely separated from each other. Cannot be glued. For polymer-polymer systems, their compatibility with each other can be compared with solubility parameters. When the phase dissolving parameters of the two differ by more than 0.5, the two polymers cannot be miscible. Chemically similar two-phase molecules, in most cases, have similar dissolution parameters and at the same time appear to be miscible with each other.
For PVDC and PP (the main raw material for the production of BOPP film), there are great differences in the structure of the two, the former is a polar molecular system, the latter is a non-polar molecular system, the difference between the two solubility parameters, The former is 20.0 to 25.0 (card/cm3)1/2, and the latter is 16.3 (card/cm3)1/2, a difference of 3.7 to 8.7, which greatly exceeds 0.5 Therefore, PVDC and PP cannot be mutually soluble, so the PVDC coating film and the BOPP film cannot be heat-sealed with each other.
PVDC/BOPP film realizes printing—coating—heat sealing, and realizes the beautifying function of strip packaging, which is not available for ordinary BOPP cigarette film. Nanning Cigarette Factory, Liuzhou Cigarette Factory, Cixi Cigarette Factory, and Wuhu Cigarette Factory are using this application program and have achieved good results.
Third, if all four or five types of cigarettes in China are all coated with PVDC coating to achieve carton-free packaging, the cost savings of more than 1.2 billion yuan can be achieved using BOPP/PVDC coated film instead of carton, which can significantly reduce production costs. , Each box of products can save more than 77 yuan, which can be calculated from the following:
The packaging cost of each cigarette packaged with PVDC coating film is: 0.0788 yuan/bar The total cost of using packaging film+carton is approximately: 0.3893 yuan/bar. The cost of PVDC coating film packaging can save every cigarette. 0.3105 yuan, each large box of tobacco factory products can save costs 0.3105 × 250 = 77.63 yuan.
In 2002, a total of 34.49 million cases of cigarettes were produced nationwide, of which about 45% were Class IV or 5 cigarettes, which totaled approximately 15.5 million cases. If all of them were packaged directly with PVDC coating, the cost savings would be 12 0.03 million yuan, economic efficiency is extremely obvious.
Fourth, the use of PVDC coating film instead of strip packs is a beneficial measure for environmental protection and conservation of wood consumption.
1, save the use of paper, reduce forest consumption. Each paper cigarette holder consumes 23.66g, and each 10,000 large cigarette paper container consumes 23.66g × 250 pieces / box × 10000 boxes = 59.19 tons per ton of paper. In tons, 10,000 large boxes of cigarette paper consumed 236.6 tons of logs.
According to the four major sources of dust storm in Inner Mongolia, the average output of natural forest in Aohan Banner of Inner Mongolia is 0.5 tons/mu, and all four or five types of cigarette paper strips need to be cut down:
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