1. According to the different uses of the paper bag, the material of the packaging bag should have resistance to moisture, water vapor, gas, light and heat, etc., and it should have certain impact strength, vibration strength and packaging humidity, etc. The packaged items have a certain ability to protect. Only in this way can people's requirements for packaging bags be met.
2. When selecting materials, the packaging materials should have low toxicity, especially food packaging bags, which must not release poisons, otherwise it will affect the promotion and application of paper bags, and have certain anti-microbial properties. The material of the paper bag machine is made of paper, which can meet this condition.
3. The packaging materials can be produced on a large scale, which can meet people's daily needs, reduce the price of materials, facilitate mechanization and automation, can adapt to printing, and can also print logos and trademarks on packaging bags.
4. The resources are abundant, and the materials are easy to obtain, and the cost is relatively low. The used packaging bags can be recycled again without causing environmental pollution. This is one of the fundamental reasons for eliminating plastic bags.
In general, the production materials of paper bags need to meet the requirements of people's daily life, and have high safety and environmental protection.