Chinese Triditional Festival------Mid Autumn Festival coming Sunshine festival party
Cross non woven fabric/ Cambrella Fabric
The role of anti-static water pressure in SMS non-woven fabric
by：Sunshine
2021-04-09
Hydrostatic pressure refers to the pressure of a static liquid acting on each unit pressure area. The hydrostatic pressure resistance of the fabric is the hydrostatic pressure that the fabric can withstand to express the resistance encountered by the water through the fabric. It is an important indicator of the water barrier performance of the fabric. It is of great significance in medical protection products, such as in our country. The promulgated 'Technical Requirements for Disposable Medical Protective Clothing' (GB19082-2003) has made mandatory provisions on the liquid barrier function of protective clothing. When the hydrostatic pressure is 167kPa, the protective clothing must not penetrate; the moisture permeability should not be less than 2500g /㎡.
Surgical gowns and surgical towels are required to be equally safe for patients and doctors, because when fluid penetrates the material, microorganisms are also brought in, so the surgical gown must be able to prevent the penetration of liquid and the accompanying bacteria. Studying the influencing factors of the anti-hydrostatic pressure of the spunmelt non-woven fabric will help to find ideas for improving the barrier properties of SMS non-woven fabrics, improve production efficiency, stabilize and gradually improve the quality of non-woven fabrics for medical protection. The influence of various process parameters of melt-blown in the SMS process on the anti-hydrostatic performance of the product mainly includes: raw materials, melt-blown ratio, screw die temperature, hot air temperature and air volume, receiving distance, machine status, etc.
There are many indicators involved in the barrier properties of surgical gowns to water, such as hydrostatic pressure resistance, spray test, water level, etc. The most commonly used is hydrostatic pressure resistance. Anti-static water pressure refers to the ability of the test material to resist the slowly rising water pressure. In the test methods of various systems, this index is judged according to the test area, the rising speed of the water pressure and the end position determined by the appearance of several drops of water. The larger the value, the better the barrier property of the material to water. There is a dense meltblown layer in the middle of the SMS non-woven fabric. The linear density of its fibers is very small, basically all ultra-fine fibers, which can reach 0.01dtex~0.05dtex, which is about 1% of the linear density of ordinary spunbond fibers. The fibers of the meltblown web are very fine and the web is very uniform. When the liquid comes into contact with it, because the surface tension liquid is not easy to penetrate, the gap formed by the connection between the ultra-fine fibers is quite small, so the dust and bacteria are blocked, making the surgical gown close to the 'absolutely clean' effect.
Surgical gowns and surgical towels are required to be equally safe for patients and doctors, because when fluid penetrates the material, microorganisms are also brought in, so the surgical gown must be able to prevent the penetration of liquid and the accompanying bacteria. Studying the influencing factors of the anti-hydrostatic pressure of the spunmelt non-woven fabric will help to find ideas for improving the barrier properties of SMS non-woven fabrics, improve production efficiency, stabilize and gradually improve the quality of non-woven fabrics for medical protection. The influence of various process parameters of melt-blown in the SMS process on the anti-hydrostatic performance of the product mainly includes: raw materials, melt-blown ratio, screw die temperature, hot air temperature and air volume, receiving distance, machine status, etc.
There are many indicators involved in the barrier properties of surgical gowns to water, such as hydrostatic pressure resistance, spray test, water level, etc. The most commonly used is hydrostatic pressure resistance. Anti-static water pressure refers to the ability of the test material to resist the slowly rising water pressure. In the test methods of various systems, this index is judged according to the test area, the rising speed of the water pressure and the end position determined by the appearance of several drops of water. The larger the value, the better the barrier property of the material to water. There is a dense meltblown layer in the middle of the SMS non-woven fabric. The linear density of its fibers is very small, basically all ultra-fine fibers, which can reach 0.01dtex~0.05dtex, which is about 1% of the linear density of ordinary spunbond fibers. The fibers of the meltblown web are very fine and the web is very uniform. When the liquid comes into contact with it, because the surface tension liquid is not easy to penetrate, the gap formed by the connection between the ultra-fine fibers is quite small, so the dust and bacteria are blocked, making the surgical gown close to the 'absolutely clean' effect.
Custom message
Related Products
