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Since the outbreak of the new crown virus, the demand for masks, as an important protective equipment, has increased rapidly
.
The company's special material for melt-blown non-woven masks is prepared by a controlled rheology method.
It can produce special materials with a melt index of 800-1600g/10min according to demand, with stable fluidity, low ash content, narrow molecular weight distribution, and low emission.
It has excellent characteristics such as odor and excellent spinning performance, and is suitable for the production of meltblown polypropylene non-woven fabrics
.
Since the outbreak of the new crown epidemic, Walter has actively fulfilled its corporate social responsibility
.
In response to the rapid increase in the amount of medical testing equipment used in the prevention and treatment of the new coronavirus epidemic, the company focused on organizing R&D, process, production and quality control core teams during the Spring Festival to fully meet the material needs of downstream medical testing equipment production customers.
A set of testing equipment and materials guarantee
.
Introduction of special materials for masks
Introduction of special materials for masksIntroduction of special materials for masksMasks are generally made of multi-layer non-woven fabrics: spunbond non-woven fabrics or hot-rolled non-woven fabrics + melt-blown non-woven fabrics + spunbond non-woven fabrics (SMS structure), or melt-blown non-woven fabrics (SMMS) with multiple layers in the middle.
, SMMMS)
.
The M-layer melt-blown non-woven fabric in the middle uses high-melt index polypropylene as the main raw material, and uses high-speed hot air to draw the thin stream of polymer melt extruded from the spinneret hole of the die, thereby forming ultra-fine fibers and condensing On the condensed screen or roller, and rely on self-adhesion to become non-woven fabric
.
The fiber diameter of the non-woven non-woven fabric can reach 0.
5-10 microns.
These ultra-fine fibers with unique capillary structure increase the number and surface area of fibers per unit area, so that the melt-blown fabric has good filterability, shielding, Thermal insulation and oil absorption are the most important core layers of masks
.
Figure 1 Process principle of M-layer melt-blown polypropylene non-woven fabric
Figure 1 Process principle of M-layer melt-blown polypropylene non-woven fabricFig.
2 Micromorphology of M-layer melt-blown polypropylene non-woven fabric
2 Micromorphology of M-layer melt-blown polypropylene non-woven fabric
Figure 3 Dust-proof principle of M-layer melt-blown polypropylene non-woven fabric
Figure 3 Dust-proof principle of M-layer melt-blown polypropylene non-woven fabric
As a leading enterprise in the domestic new material industry, the company has always been committed to being a promoter of a better life for mankind, and realizing corporate value by actively fulfilling social responsibilities
.
The company is one of the earliest companies in China to implement the EU environmental protection standards for materials.
It solves the environmental protection problems in the process of material replacement through innovative material solutions, and eliminates the harm of heavy metals and toxic organics in the materials to the human body and the environment from the source.
.
At the same time, the company actively pays attention to the use and substitution of polymer materials in new energy and non-renewable materials, and provides material solutions that satisfy customers for many new energy companies
.
In addition, the company also implements targeted poverty alleviation through various methods such as donations to poverty-stricken areas and placement of people in poverty-stricken areas for employment
.
