EPE pearl cotton looks same, why is the quality difference so big?EPE pearl cotton is the same, why is the difference so big?
EPE (expand aple poly ethylene) is a kind of hair polyethylene, also known as pearl cotton. The production process of EPE is to take LDPE low density polyethylene resin as the main raw material, add foaming agent and anti shrinkage agent, and then extrude to make sheet. Freon is often used as foaming agent in the early EPE production process, but because Freon has the risk of damaging the atmosphere, it is banned by the state. At present, butane has been widely used for foaming in China, and two kinds of auxiliary materials, industrial or medical grade 800-1250 mesh ultra-fine talcum powder and food grade shrinkable agent monoglyceride, have been added. The whole production process is a physical change, In the production process, there is no toxic and harmful gas, no waste products, no waste water, so EPE is a non-toxic environmental protection product.
The formation of independent bubble and fine bubble structure in polyethylene makes EPE have high elasticity, and is full of toughness but not brittleness. It is a better protective interior material in the world at present. The EPE has a soft surface and a good appearance. The fully independent bubble body has the characteristics of light weight, heat insulation, waterproof, moisture-proof, shockproof, sound proof, and has the characteristics of corrosion resistance, anti-aging ability and good workability. Compared with other foamed materials, EPE has superior resistance to multiple drop impact. It overcomes the shortcomings of EPS, such as friability, deformation and poor recovery.
Therefore, EPE is widely used in product packaging. Such as electronic appliances, instruments and meters, computers, acoustics, medical devices, industrial control boxes, hardware lighting, handicrafts, glass, ceramics, home appliances, spraying, furniture, furniture, alcohol and resin and other high-end fragile gift packaging, hardware products, toys, fruits, leather shoes and other products. The environmental protection characteristics of EPE have been recognized in the world. There is no other chemical composition produced in the production process of EPE. The waste EPE can be recycled and degraded, which is pollution-free and in line with environmental protection standards. However, the current situation that EPS styrofoam destroys the ecological environment shows the advantages of EPE in environmental protection.
With the deepening of China's opening up to the outside world, especially the entry of foreign-funded enterprises into the Chinese market, people have a new understanding of the packaging awareness of products. In terms of the packaging of products, it is not only required to be beautiful and generous, but also required that the packaging products should meet the requirements of environmental protection (no garbage, recyclable, harmless to people's health), and the EPE packaging materials are just catering to the needs of people People's requirements for environmental protection technology have been developed rapidly. With the increasing application of EPE packaging materials, especially the obstinacy of electronic industry, EPE packaging material production industry has become an important industry for economic development in China.
For a long time in the past, the traditional Chinese pearl cotton was made of multi-layer composite plates. The surface of its products was wavy and uneven, and it was still insufficient in strength, pressure resistance and toughness, so that it could meet the needs of some strict product packaging. Therefore, the imported disposable foam pearl cotton products were needed to meet the needs.
The differences between traditional EPE pearl cotton (composite EPE board) and disposable foam EPE pearl cotton board are shown in the following table:
Composite EPE pearl cotton board
Disposable foam EPE board
The surface is wavy, easy to lift
Easy stratification and uneven thickness
The surface is smoother, more beautiful and the appearance size is stable
Film blowing composite cutting die cutting welding
Blow plate die cutting welding
More than 15mm needs to be compounded layer by layer with many processing procedures
Single layer thickness up to 100mm
Damage to blisters during combined heating
More uniform and complete bubble structure
Large concave edge when stamping or cutting
Great elasticity, good memory recovery,
Small concave edge when stamping or cutting
The performance of 20kg / m3 single use foam board can replace 25kg / m3 composite EPE pearl cotton board
Large storage space occupied by coil storage in the early stage
Direct plate storage saves 40% space
The process of composite plate is complex,
There are certain risks
High safety factor in production of one-time foamed EPE thick plate
10% loss in composite process
No loss, one-off thick plate
20 employees for composite EPE sheet
6 workers for one-time foam EPE thick plate
One time foaming EPE thick plate can save 1 / 3 of foaming gas
EPE pearl cotton is the same, why is the difference so big?
The core lies in the production equipment. For many years, the production technology of disposable foam EPE pearl cotton has been mastered in the United States, South Korea and other countries, the market demand of disposable EPE is increasing, and the production line equipment and production technology has been blank in China. Moreover, the price of imported one-time foam EPE pearl cotton is much higher than that of domestic common composite EPE pearl cotton.If you want to know more about it please do not hesitate to contact me. WhatsApp:+86-15966835076.https://www.plastmachine.cn/EPE-FOAMED-SHEETFILM-EXTRUSION-LINE-p.html