How to choose the powder of plastic bag blowing masterbatch?

How to choose the powder of plastic bag blowing masterbatch?

Today, let's talk about what kind of powder is better to use in plastic bag blowing film masterbatch, usually our most common plastic bags are white rolled bags used in supermarkets, colored plastic bags used in the market and black garbage bags.

Look closely at these plastic bags, some are more transparent, some are translucent, and some are opaque. Mainly because of the addition of different fineness, different purity powder caused by.

Which powders are used to fill the common blown film masterbatch?

Heavy calcium carbonate powder, heavy calcium powder is a common filling powder, calcite, dolomite, marble and other ore grinding processing, the density of different ores is different, resulting in the density of the processed powder is not the same. The use of powder filling with different densities also makes the masterbatch have different densities, so that the plastic bags produced will have light and heavy points, some manufacturers need to reduce the weight of the bag will use calcite calcium powder, need to increase the weight of the bag will use dolomite calcium powder, in general, the plastic bags made of calcium powder are generally transparent, so most of them are used to produce black colored plastic bags.

Talc powder, talc powder is a kind of balanced filling powder, the main component is hydrated magnesium silicate, talc powder density is lower than calcium powder, has the characteristics of flake structure, oil and hydrophobic, good compatibility with resin in the production process, ordinary 800-1000 mesh fine talc powder TP-555 used in blown film masterbatch, The transparency and tensile properties of the plastic bags produced are better than those filled with calcium powder. If the pursuit of higher tensile properties can add 1250 mesh talc powder TP-777 with higher purity, the plastic bags produced in this way not only have good transparency and tensile properties, but also have better anti-aging properties.