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  • What is the material of making KN95 mask, ES hot air cotton?

    类别:国际物资专栏       2020-04-24 | 710阅读       标签:   

    As one of the KN95 folding mask materials, hot air cotton is not well known by the public.As a new mask material, hot air cotton non-woven fabric is widely used in N95 folding mask.Recently, ES hot air cotton towards the hot search headlines, so what is ES hot air cotton?What does it do?

    One, ES hot wind cotton is what

    Hot air cotton, also known as tuyere cotton, is a new type of insulation material, is the replacement of spray cotton, imitation silk cotton.Hot air cotton is different from spray cotton.Its fixation method is not the use of latex but in the raw material mixed with a certain number of low melting point fiber or ES two-component fiber, in the production process through the heat drying, the fiber between the fusion, so also belongs to the synthetic fiber filter cotton one of the.Hot air cotton production speed, large output, low cost.

    KN95

    ES hot "ES" is a kind of composite fiber of cotton, is English "Ethylene - Propylene Side BySide", refers to the name of the raw materials.As a new type of thermal conjugation composite fiber, ES fiber has been highly appraised in the world.The "hot air" of the hot air cotton refers to a process, in the fiber carding, the hot air on the drying equipment through the fiber network, so that the heat to be able to bond the generated non-woven cloth.

    Three, ES hot wind cotton characteristics

    When the carded fiber network is bonded by hot rolling or hot air penetration, the low melting point component forms molten adhesion at the intersections of the fiber.After cooling, the non-intersections of the fiber still remain in the original state, which is a "point adhesion" rather than "zone adhesion" form, so the product has the following characteristics:

    1. Pure white, fluffy, soft feel, good elasticity, strong warmth retention, good moisture absorption.

    2. Natural flame retardant fiber, and no droplet phenomenon.Permanent self-extinguishing effect.

    3. Dense carbonation layer is formed during combustion.And low carbon dioxide content, only a small amount of non-toxic smoke

    4. Stable acid and alkali resistance, no toxicity, no chemical action.The products can be naturally degraded and meet the requirements of environmental protection.

    5. Disadvantages of hot air cotton: low strength, easy to deformation.

    Four, ES hot air cotton production process

    Hot air cotton production process: mixed cotton - loose - cotton - carding - net - main carding - hot air drying - winding - cutting

    Blended cotton: ratio of various fibers, mixed fiber;

    Initial release: the mixed raw materials are transported to the pre-release machine for initial release;

    Fine opening: the fiber raw material intended by the pre-opening machine is carefully opened here, so that the crimped fiber is all stretched out for combing;

    Cotton collection: the air duct will carefully open the raw materials to the cotton collection machine, where the raw materials after the opening fluffy soft;

    Carding: cotton collecting machine will be fine loose cotton into carding machine, by carding machine will be fiber carding into a network;

    Net laying: the combed cotton is laid into the specified width and thickness according to the parameters;

    Hot pressing: the reticulated cotton is pressed to the specified thickness according to the specified parameters, and the fiber is preliminarily shaped and put into the oven.

    Shaping: the hot pressed fiber is pressed to the specified thickness here according to the specified parameters after high temperature sterilization.(the two steps of hot pressing and setting are slightly different from the acupuncture process, so please pay attention to distinguish them.)

    Edge cutting: according to the specified parameters of the environmental protection resin cotton into the specified width or flake specifications, packaging goods, production

    V. application of ES hot air cotton

    ES hot air non-woven fabric can be used in various fields according to the density. The general thickness is used for KN95 protective masks, baby diapers, adult incontinence pads, fabrics of women's hygiene products, napkins, bath towels, disposable tablecloths, etc.Thick products used to make cold clothing, bedding, baby sleeping bag, mattress, sofa cushion, etc.High density hot melt adhesive products, can be used to make filtering materials, sound insulation materials, damping materials.

    Six, ES hot air cotton can replace the melting spray cloth

    1 ton of hot air cotton without protective cloth, can make about 600,000 KN95 masks, N95 folding masks.

    As a result of the increase in the demand for masks, leading to the production of one of the raw materials needed for masks - melting spray cloth is also very scarce, since the supply of melting spray cloth is so tight, can we use the filter effect of masks hot air cotton instead?

    As we all know, "melt spray cloth", the production of an important raw material for masks, commonly known as the "heart" of masks.With good filtering, shielding, adiabatic and oil absorption, it can filter out the virus attached to the body fluid. It mainly plays a filtering role in N95 mask and is an indispensable mask filtering material.

    Also known as the filter cotton hot air cotton non-woven cloth, its filtration effect only to achieve the primary filtration, therefore, it can not replace the melting spray cloth.Since the hot air cotton non-woven fabric can not replace the melting spray cloth, so it in the N95 mask and play what role?Are there any missing materials?

    Hot air cotton non-woven fabric belongs to a kind of filling material in the N95 respirator, some vendors in order to balance the effect of heat preservation and protection, adopt high volume, good elasticity, soft, warmth retention property is strong, good hot air permeability breathable cotton non-woven clip in the middle of the folded N95 respirator, mainly have heat preservation and heat insulation, moistureproof prevent wet effect, and improve the wearer comfort.

    Although hot air cotton non-woven fabric can not replace the melting spray cloth, but both are N95 mask materials, a lack of.


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