What is the plastic composition of the outer packaging of milk

1. What is the material of the milk packaging box?

2. What is the material of the milk packaging box**.

3. What is the material for the inner packaging of the milk carton?

4. Packaging materials for boxed milk. Quarrelsome.

1.The packaging box of milk is made of composite materials.

2.The packaging box is a six-layer composite packaging composed of paper, aluminum and plastic, the typical composite material is composed of the following four materials or several of the materials composite polyethylene, the sealing layer, which plays the role of blocking moisture and bacteria, cardboard is used to improve the hardness and strength of the box, and has the effect of protecting from light, aluminum foil has excellent oxygen insulation and light protection performance, which can effectively isolate milk and air, light and contact bacteria, so it can be stored at room temperature, and the shelf life is longer, it can reach 45 days, and the cost performance of paper packaging bags is higher, Its cost is also lower.

Different packaging means different production processes, different shelf life and different brands.

The details are as follows:

1. The production process is different.

For example, Tetra Pak is a six-layer composite package composed of paper, aluminum and plastic; The structure of Baileys is a multi-layer sterile composite membrane; The outermost layer of the roof box packaging is plastic film, the middle layer is fiber, the inner layer of cold filling is an airtight paper layer, and the inner layer of hot channel filling is aluminum foil.

2. The length of shelf life is different.

Milk packaging produced by different processes will inevitably affect the shelf life of milk. For example, Tetra Pak itself can effectively isolate milk from air, bacteria, and light, and the shelf life can reach 6 to 9 months or even a year.

The barrier performance of Baileybao to oxygen is more than 300 times that of ordinary plastic film, and the shelf life can reach more than 30 days; The shelf life of products for cold filling in roof boxes is 7 days or 21 days for 30 days, and the shelf life of products for hot filling is 3 months to 1 year.

3. Different milk packaging can effectively distinguish from other brands.

For example, school milk is usually Tetra Pak, Bright milk is usually packaged in roof boxes, and Wahaha milk is usually packaged in PET bottles. These packages are both a commodity and a consumer's impression of the milk brand.

First, the role of different packaging:

1. It can make people quickly distinguish the type and brand of milk.

1) Liquid milk can be divided into ultra-high temperature sterilization and pasteurization according to different disinfection methods.

Ultra-high temperature sterilization is to basically ensure the nutritional requirements of raw milk under the premise of killing all bacteria in the milk to the greatest extent. This milk product has a long shelf life, has no restrictions on storage conditions, and is easy to store and carry.

Pasteurization is to ensure the nutritional content of milk to the greatest extent under the premise that the bacterial content of dairy products can reach a level acceptable to the human body. This product has a short shelf life and has requirements for storage conditions, generally 0 4. The former contains almost no bacteria, and the latter does not pose a health threat due to its bacterial content.

The latter is close to the level of raw milk in terms of taste and flavor, and there is little difference between the two in terms of nutritional value.

Generally speaking, plastic bottles and cartons are packed.

It is ultra-high temperature sterilization, and most of the plastic bags are pasteurized.

2) Milk can be divided into three types: full-fat, low-fat, and skimmed according to the level of fat.

People who do not have lipid disorders or are of normal weight can drink full-fat.

If you have chronic diseases such as high blood lipids and obesity, it is recommended to drink low-fat or defatted.

3) Take the common brands in the three provinces and cities in Northeast China as an example.

Mengniu Yili. Bright and bright.

Huishan Wangwang. 2. It can motivate people to consume.

3. It can make it more convenient to carry.

Second, the shelf life is as follows:

1. The shelf life of glass bottled milk is about 1-3 days.

2. The shelf life of milk in paper bags is about 45 days.

3. The shelf life of milk in plastic bags is about 30 days.

4. The shelf life of milk in paper aluminum foil boxes ranges from 3 to 6 months.

In fact, the shelf life is different, the shelf life of aseptic bricks is longer, and the shelf life of sterile pillows is relatively shorter, but if you are buying**product, it is not necessarily, ** then there is not much time left in the shelf life, otherwise why **.

The milk carton is a six-layer composite paper packaging material composed of paper, aluminum and plastic, also known as Tetra Pak, and it is also a classic work of moderate packaging. And Tetra Pak makes life simpler, more convenient and safer.

Milk is one of the oldest natural beverages and is known as white blood; Milk is rich in protein, fat, vitamins and minerals and other nutrients, and milk protein contains essential amino acids for the human body.

Milk is a common drink in people's daily life, delicious and nutritious, and is deeply loved by everyone.

The milk we drink every day comes in three packages: in pouches (Baileys), in boxes (Tetra Pak) and in glass jars. So what's the difference between these three types of packaged milk?

These kinds of packaging are different, the storage method and shelf life are also different, in daily life, you can choose mega Bu according to your preferences.

Carton milk packaging is usually constructed with a multi-layer composite material to ensure the preservation and shelf life of the milk. The following are common carton milk packaging materials:

1.Cardboard: The main constituent material of the carton is cardboard, which provides the structure and strength of the packaging. Cardboard is made from pulp by pressing and drying, which has certain resistance to pressure and water.

2.Aluminum foil: On the inside or outside of the carton, there is usually a coating of aluminum foil. Aluminum foil has good oxygen and moisture barriers, which can prevent oxygen and moisture from entering the inside of the package and prolong the shelf life of milk.

3.Plastic film: The upper, inner or inner wrap of a carton is usually made of a layer of film, such as a plastic material such as polyethylene (PE) or volt polyester (PET). This film prevents liquid leakage and protects the carton from moisture and contamination.

The combination of these Changsheng materials plays a role in protecting milk quality, preventing the intrusion of external factors and providing structural stability in carton packaging. At the same time, the selection of materials for cartons also takes into account environmental factors to minimize the impact on the environment. <>

The shelf life of plastic paper is about 45 days, and the box is 8 months, and the three nutrients are basically the same.

Pure milk in plastic bags is pasteurized milk, repeated at 60 degrees many times, maintaining the basic nutrients of milk, commonly known as fresh milk;

Pure milk in paper bags is also pasteurized milk, and the paper bag has a better light and heat insulation effect than plastic bags, so the storage time is slightly longer;

Boxed pure milk is sterilized at ultra-high temperature 250 degrees, and can be stored for more than half a year at room temperature, which is called Tetra Pak milk; Ultra-high temperature will remove part of the water in fresh milk, and the protein content is slightly higher, but vitamins will be lost a lot, so it is recommended to drink fresh milk at home and take Tetra Pak milk when you go out.