Plastic packaging coil is one of the four major materials in the packaging industry: paper and cardboard account for 30%, plastic accounts for 25%, metal accounts for 25% and glass accounts for 15%. The above two 25% fully illustrate the importance of the plastic packaging coil industry. Although the plastic packaging coil industry is now the second packaging material, its practical side is not as good as paper and cardboard packaging. However, the plastic packaging industry is developing at a rate of 5% every year, while other packaging materials, including paper and cardboard, metal, glass, pottery, hemp, cotton, etc. are only growing at a rate of 2%. Beyond paper and cardboard and become a bit of packaging material.
Commonly used food plastic packaging rolls are mostly made of polyethylene film, and another film is made of polyvinyl chloride, but the additives involved in the use of the film are often harmful substances to the human body and have certain toxicity. Therefore, such films and plastic bags made of the films are not suitable for holding food.
The main characteristics of plastic packaging coils:
1. The density of the plastic packaging coil is relatively small, but the strength is relatively large, so the packaging yield is relatively high.
2. The plastic packaging coil has good chemical resistance. No matter it is in a strong acid or alkali environment, it will not oxidize if it is placed for a long time.
3. Plastic packaging is relatively easy to shape, so the energy consumption is relatively low.
4. Good transparency, so coloring is relatively easy.
5. Mildly high, and has good impact resistance.
6. Insulation performance is good, and the processing cost is relatively low.