The diversity of dairy packaging makes the supermarket shelves a dazzling array. According to the packaging form, it can be divided into box packaging, cup packaging, bag packaging and bottle packaging. According to the different packaging systems and materials manufacturers, it can be divided into Tetra Pak, Roof Bag and Combibloc. , Eka Cup, Bailey Pack, Fenbao, Ecolean Fresh Kettle, Yile Pack, Haolibao, Wankebao, etc; According to the grade of packaging, it is divided into high-grade packaging: sterile brick, roof pack, Eka Cup , Yile package; mid-range packaging: aseptic pillow, Fen Bao, Ecolean love bag, high barrier Gabriel package; low-grade packaging: ordinary black and white film, single-layer plastic; according to the packaging material is divided into paper aluminum plastic composite materials, Paper-plastic composite materials, aluminum-plastic composite materials, metal materials, glass materials, plastic co-extruded films, plastic containers. The common packaging form is as follows.
(1) Sterile bricks: including deformed triangles, axe, square pillars, cylinders, polygons, etc. The most typical products are Tetra Pak and SIG Combibloc, a multi-layer paper aluminum-plastic composite structure, fresh milk Filling after ultra-high temperature flash sterilization. The product can retain nutrients and flavors as much as possible, has good safety, has a long shelf life, is stored at room temperature, and is convenient for long-distance transportation.
Tetra-brick is a kind of dairy packaging commonly used in China. It is filled and sealed with 6 layers of aluminum-plastic composite aseptic packaging material. The cost is relatively high. Take 250ml of liquid milk packaging as an example, it is about 0.5 yuan/a; the cost of the "Leather pillow" is relatively low, about 0.3 yuan/a.
Combibloc is a carton dairy product package developed and designed by the Swiss SIG Group and is a 6-layer composite flexible packaging material. The outermost layer is polyethylene, which is white cardboard, polyethylene, aluminum foil, adhesive layer and polyethylene layer from the outside to the inside. White paperboard is used instead of kraft paper as the substrate, making the rigidity of Combibloc much stronger.
(2) STU: At present, in the market for roof box packaging materials, International Paper, Tetra Pak and Japanese-made packaging materials dominate. The typical product is a fresh house produced by the International Paper Industry, a paper-plastic structure. The roof type carton pack has its unique design, material and structure, which can prevent oxygen and water from entering and exiting, and has good barrier property to external light; it can keep the freshness of milk in the box, and effectively preserve the rich vitamin A in milk and Vitamin B. The shelf life of the STU is 7 days to 10 days, and it needs to be refrigerated. It can be directly heated by the microwave oven, and has good hygiene and environmental protection. The shelf display effect is good, and it is easy to open and retrieve. It is commonly used for filling high-grade products such as fresh milk, flavored milk, flavored milk, yoghurt and milk yogurt.
(3) Sterile pillows: typical products are Tetra Pak pillows, Tranlin sterile pillows, etc., for paper aluminum plastic multi-layer composite structure, long product shelf life, safety and health, the cost is relatively low, suitable for household consumption, no refrigeration, distribution The process saves transportation costs.
(4) Sterile cups: Plastic cups are packaged in two types: thermoformed plastic cups and preformed cups. The thermoforming cups are aseptic packaging systems produced by companies such as Erca of France, Therform and Bosh of the United States. Prefabricated cups include Metal Box's Fressh Fill aseptic packaging system. Erca Inc. of France has two plastic cup aseptic packaging systems, NAS (Neutral Aseptic System) and FAS (Flash Aseptic System). The former is used for neutral or low-acid foods and the latter is used for high-acid foods.
(5) Ecolean vertical package (fresh pot): It is a product of Swedish ecolean company. The product design is novel and unique, and it is an environment-friendly fresh-keeping packaging. It has good barrier properties, is easy to recycle, and has good printability. It can be directly heated by a microwave oven and has a low cost.
(6) Wanrongbao: Wanrongbao, launched by Hunan Wanrong Packaging Co., Ltd., is suitable for ultra-high temperature instantaneous sterilizing and special aseptic filling equipment, which can guarantee the shelf life of milk at room temperature to 30 days, 60 days, and 90 days. The cost of 250ml Wanbao is about 0.07 yuan/a, and the cost of a 500ml Wanbao is 0.11 yuan/a.
(7) Bailey Bao: PrePak is a packaging produced by the French Bally company's aseptic packaging system.
(8) Fenbao: Fenbao is (FinnPak) packaging produced by the aseptic packaging system of Elester, Finland. The Fen package material is a multi-layered black-and-white film, and it is also made of aluminum-plastic composite film, which has a long shelf life and an affordable price.
(9) Composite plastic bag: This kind of packaging has many varieties and different properties, occupying the main low-end dairy packaging market. Bailibao, Fenbao and Wanrong are all such products.
(10) paper cups: paper cups (fresh cups) packaging can replace bottled, bagged products, more hygienic. Features are beautiful and fashionable, small capacity, suitable for a drink once; the material is easy to absorb, tear cover film, microwave heating; below 10 °C can be stored for 5 days, is a fresh packaging.
(11) Plastic cups: PP cups are flexible, resistant to high temperatures of 100 °C , light weight, suitable for pasteurized milk and various milk beverage packaging; PS cups are rigid, crisp and elegant, good surface finish, strong ink printing adhesion , Excellent resistance to low temperature freezing (-30 °C ), suitable for all kinds of frozen dairy products, ice cream and other packaging. The cost of this kind of packaging is about 0.12 yuan/a.
(12) Ordinary plastic bags: Ordinary plastic bag packaging is one of the choices for some dairy product manufacturers to reduce costs and meet diversified market demands. The cost is only 0.04 yuan per piece, but the grade is relatively low and will be gradually eliminated by the market.
(13) Glass bottles: Glass bottles are traditional liquid milk packaging, which has the characteristics of environmental protection, reusability, and low cost. However, it is not portable, heavy weight, easy to leak milk, and broken, and can only be used as a “home delivery channel package†sold by dairy production companies in nearby cities.
(14) Plastic bottle: It is the only packaging material that can be used in three types of dairy products (Pasteurized pasteurized milk, UTH milk, and sterilized milk). Plastic bottles are multi-layered co-extruded and single-layered HDPE bottles and BOPP bottles. Plastic bottles are easy to carry, have a long shelf life, and are easy to store.
(15) plastic barrels: plastic barrels are large-capacity packaging, suitable for family consumption. The higher grade of bottled milk, compared to aseptic bricks, has a price advantage. Pasteurization guarantees pure taste and is a promising package.
Looking at the various forms and characteristics of dairy packaging above, the cost of various packaging forms varies greatly, and the application of each grade of packaging is inextricably linked to the grade and preservation requirements of dairy products and the market positioning of dairy products companies. Large-scale dairy companies use Tetra Pak and Combibloc. For example, Mengniu uses fresh milk from the Tetra Pak, and Wandashan conquers the market with Baoli. Of course, in addition to the main products, dairy products companies also develop other packaging products to meet the diverse needs of the dairy market.
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