Air-permeable membrane packing stirred mill, wet pulverizer, pulverizer
Release time:
2025-04-10 08:58
Source:
With the dynamic adjustment of population policies and the continuous increase in the demand for public health protection, polypropylene breathable membranes, as a core material in the field of medical protection and hygiene products, are experiencing significant market growth. This functional material is made by adding about 50% special calcium carbonate to a resin matrix, extruding it into a film, and then uniaxially stretching it. The interfacial delamination effect between polyethylene and calcium carbonate particles forms a porous structure, achieving selective permeation of water vapor molecules while effectively blocking water droplets.
The performance of breathable membranes is highly dependent on the characteristics of the calcium carbonate powder, including key indicators such as chemical stability, surface treatment process, and low oil absorption. To meet these stringent requirements, industry-leading powder processing equipment
—honeycomb mills and cell mills—have become the core equipment for preparing calcium carbonate for high-performance breathable membranes. The honeycomb mill system
employs a dry grinding process, integrating multiple processes such as ball milling, depolymerization, shaping, and surface modification. Through mechanochemical modification technology, high coverage surface treatment of calcium carbonate particles is achieved. The powder produced by this equipment has excellent dispersibility and interfacial compatibility, which can effectively regulate the microporous structure of the breathable membrane, improving the mechanical properties and process stability of the product. The cell mill system
uses a wet grinding process, allowing for precise control of calcium carbonate particle size to the micron or even nanometer level, significantly improving the powder's oil affinity and dispersion efficiency. Calcium carbonate treated by the wet process can be more evenly distributed in the resin matrix, giving the breathable membrane higher air permeability and better barrier properties, while also reducing the oil absorption of the material, providing strong support for high-speed production. Both systems are equipped with intelligent control systems to achieve precise control of process parameters and meet the individual needs of different customers. In the fields of medical protection, hygiene products, and industrial filtration, the use of calcium carbonate prepared by honeycomb mills and cell mills significantly improves the overall performance of breathable membrane products, creating higher economic benefits for enterprises.
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