Mask membrane filter material for N95 masks

Currently, in response to the diverse needs of polytetrafluoroethylene microporous membranes, the mask membrane filter materials developed and produced are widely used by domestic and foreign customers and occupy an important position in the industry.

As the domestic epidemic gradually expands, masks are in short supply in various places, and refining and chemical companies are rapidly changing production plans to ensure full supply.

In response to the current shortage of medical supplies such as medical masks, Sinopec’s refining and chemical companies have temporarily changed their production schedules and other measures, increased equipment loads, and are operating at full capacity to produce medical polyolefins to ensure the supply of raw materials for the production of medical supplies.

Medical surgical masks and N95 masks generally adopt a multi-layer structure, referred to as SMS structure: a single layer of spunbond layer (S) on both sides of the inside and outside; a melt-blown layer (M) in the middle, which is generally divided into single layer or multiple layers. layer.

Among them, the outer layer is a waterproof-treated non-woven fabric, which is mainly used to isolate the droplets sprayed by the patient; the middle melt-blown layer is a specially treated mask membrane filter material, which has good filtration properties. Shielding, heat-insulating and oil-absorbing properties are important raw materials for the production of masks; the inner layer is ordinary non-woven fabric.

The mask membrane filter material product is made of polytetrafluoroethylene as raw material, which is expanded into a microporous film, and then the film is coated on various fabrics or paper substrates using a special process. Make it a new type of filter material.

It has unparalleled advantages over traditional filter materials.

In terms of production, its technical requirements are much higher than those of ordinary waterproof materials. In terms of quality, it also has functional characteristics that other waterproof materials do not have.

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