Do you know something about packaging materials?

　　Packaging materials must be mentioned while learning the applications on packaging because it is the basis of packaging. Only by understanding the characteristics of the various packaging materials,can they be selected to harmonize with the characteristics of the goods themselves. Packaging materials can be divided into the following:

1, Wood packaging materials

　　The wooden materials are widely used,because the wood has a wide distribution, light weight, high strength,and can withstand impulse and vibration, easy processing advantages. However, the unevenness of the organizational structure of wood packaging materials,makes them susceptible to the environmental impact,and become deformation,decadent, flammable, easy to termite and other shortcomings. The above shortcomings, can be eliminated or reduced if wood had been properly treated.

2, Paper packaging materials

　　Paper packaging materials are the most popular materials, which is inseparable from the unique advantages of the paper. The paper not only has the advantages of easy formation, high-volume production,and low prices. It can also be recycled to protect the environment. The paper has certain celasticities, the folding properties are excellent, with good printing performance and a clear and firm writing pattern. Therefore, more and more attention has been paid on the paper packaging materials.

　　Paper packaging materialsbe divided into two types: functional protective wrapping paper, packaging and decoration paper.Functional protective wrappings, such as tough, sturdy kraft paper, corrugated paper, transparent cellophane paper, sulfuric acid paper; Packaging decoration paper, refers to the paper for printing,such as coated paper has a higher level of smoothness and whiteness, is widely used in the packaging of goods,including advanced candy, food, cigarettes and other daily necessities packaging. In addition, packaging decoration paper also includes uncoated and self-adhesive paper etc..

3, Plastic packaging materials

　　The plastic packaging is the general term for all kinds of raw materials made of plastic. The plastic packaging material has good transparency, light weight, easy to shape, waterproof, moisture resistant advantages and it can guarantee the health of the packaging. However, plastic packaging materials is easily with static electricity, air permeability, high cost of recycling, waste disposal problems, likely to cause pollution to the environment. Some plastic materials contain toxic additives, it should take the necessary measures to reduce or avoid the damage.

4, Metal packaging materials

　　Metal packaging is made of black metal, tin, steel and steel plate, aluminum foil, aluminum and other packaging containers. Such as metal drums, metal boxes, canned tin etc.. Metal containers for temporary storage contents is the evolution of today's food cans, beverage containers, has gradually become a means of long-term preservation of the built-in items.

　　Metal packaging materials with high strength is easy to store, carry and transport. It also has good gas barrier, moisture resistance, it has been applied to food, beverages, pharmaceuticals, chemicals, and other packaging. Meanwhile, the metal material has a special metallic luster which is easy for decorative printing, decoration design to facilitate the appearance of the goods. However, metal materials with low chemical stability, it is easy to rust.And sometimes even a small amount of metal materials may also affect the quality of food.

5,Glass packaging materials

　　Glass packaging material has good chemical stability to ensure food purity, sanitation, airtight.It is easy to seal and shape flexible, colorful and crystal decorative effects,and has been widely used. There are a wide variety of glass containers according to different criteria. It can be divided into colorless and transparent bottles, colored bottles and opaque glass according to color; or divided into food packaging, bottles, beverage bottles, wine bottles and so on according to usage. However, glass has a lower resistance to impact, high energy consumption and other shortcomings.

6, Ceramic packaging materials

　　Ceramic packaging refers to pack the general term for all kinds of raw materials made of plastic. The ceramic according to the materials used can be divided into coarse earthenware, fine earthenware, porcelain,and stoneware. Ceramic packaging materials which with high hardness and corrosion resistance performance to heat, water and other chemical media. Different priced goods require packaging performance of different ceramics. It is mainly used for wine packaging. However, ceramic packaging material is friable with high cost recovery.