Product name: PP raw material for melt-blown cloth, modified polypropylene

Product selling points:

1. Look at the appearance, the higher the transparency, the better

2. Smell the smell, if the particles are all smelled, the cloth produced will taste very big

3. MI index: 1500 or more, as long as it does not affect the physical performance strength of the product, the larger the value, the better the current best MI: 2000 Mi index is higher, which means better fluidity, smoother production, and less likely to block Head hole

Key indicators of material production:

1. Temperature index: Under the premise of not affecting the physical properties, the temperature of 250 ~ 260 degrees is the best, so that under the premise of high temperature, it is ensured that the additives and the plastic are fully fused

2. The length-diameter ratio of the screw, so as to ensure plasticization during the mixing process

3. The length of the sink should be longer to ensure cooling

Cloth produced from poor materials can cause the following results:

1. Uneven plastic will block the mold hole

2. The cloth produced from this material and the masks produced afterwards will have a smell after being left for a while, that is, the peroxide that has not been completely plasticized is volatile

3. The phenomenon of the worst-produced cloth is like tofu residue, which is easy to tear. Some of the fabrics will lose their strength after being left for a period of time, and they are easy to tear.