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What is the effect of adding calcium powder to non-woven fabrics after being processed by a heavy calcium grinding mill? Standard for production of non-woven fabrics with added calcium


Release date: 2023-05-27 17:21:14

Ultrafine calcium carbonate, as a widely used inorganic powder filler, can greatly reduce costs and increase efficiency when used in the production of non-woven fabrics. So, what is the effect of adding calcium powder to non-woven fabrics? What are the standards for adding calcium to the production of non-woven fabrics? The following will be answered by HCMilling(Guilin Hongcheng), a manufacturer of heavy calcium grinding mill equipment.

 

What is the effect of adding calcium powder to non-woven fabrics after being processed by a heavy calcium grinding mill? Calcium carbonate has a wide range of raw materials, low prices, and simple processing technology, making it an important inorganic chemical filler. In the main process of spunbonded non-woven fabric production, adding a certain amount of calcium carbonate can reduce the amount of polypropylene and carbon dioxide emissions without affecting the performance of the non-woven fabric.

 

The standard of adding calcium in the production of non-woven fabrics: calcite with good fluidity, low oil absorption value, high whiteness and few impurities is generally selected as the master batch of calcium carbonate powder. Calcium carbonate powder is generally d97 ≤ 3um~d97 ≤ 6um, and non-woven fabrics with a weight of ≥ 100g/m2 can use calcium carbonate powder with a weight of ≥ 10um. The preferred particle size of calcium carbonate particles is 4-8um; The general requirement for moisture content is ≤ 0.5%; The amount of addition should be strictly controlled, not too much, otherwise it will affect the tensile strength, usually 20-60%; Good dispersion; The higher the whiteness, the better, with a general requirement of ≥ 90%; Low oil absorption value, reference value ≤ 20-23g/100g; In some special products, the purity of calcium carbonate should be high, the content of silicon, iron and other elements should be low, and the content of harmful heavy metal elements should be strictly required; Generally, titanate coupling agents, aluminate coupling agents, and low molecular toughening coupling dispersants are used for modification.

 

As a new generation of environmentally friendly materials, non-woven fabrics break through traditional textile principles and have the characteristics of short process flow, fast production speed, high yield, low cost, moisture-proof, breathable, flexible, lightweight, non combustible, easy to decompose, non-toxic and non irritating, rich colors, and recyclable. Non woven fabrics are internationally recognized as environmentally friendly products for protecting the Earth's ecology. Based on the requirements of energy conservation and emission reduction, the usage of ultrafine calcium carbonate will also increase. The non-woven fabric market will undoubtedly become a new growth point in the calcium carbonate industry.

 

As a manufacturer of heavy calcium grinding mill equipment, HCMilling(Guilin Hongcheng)'s HLMX series of heavy calcium ultrafine vertical mills are ideal equipment for the production of non-woven calcium powder, capable of producing 3-4 5 μ High quality ultra-fine heavy calcium powder, the particle size and moisture content of the finished product meet the standards for adding heavy calcium in the production of non-woven fabrics. If you have any purchasing needs for calcium carbonate grinding mill equipment, please contact HCM for more information.