Fabric hydrostatic pressure tester determines waterproof and moisture permeability

There are many influencing factors of fabric waterproof and moisture permeability, for example, the material itself and textile process production process and technical problems will be affected, the waterproof index of waterproof and moisture-permeable fabric depends on the following factors: 1.
The thickness of the fabric The thicker the fabric, the greater the wet resistance, and the greater the
water pressure resistance value.
2.
The thickness of the yarn For tight fabrics woven from fibers with good hygroscopicity, the yarn radius is reduced due to the presence of capillary effect.
It can improve the water penetration resistance
of the fabric.
3.
The tightness of the fabric The increase in the distance between yarns will directly affect the level of water pressure
.
Generally, the tighter the fabric structure, the better
its water seepage resistance.
4.
The size of the pore size of the coating film The larger the pore size of the film, the worse
the hydrostatic pressure resistance of the coated fabric.
5.
The size of the contact angle When 0>90°, the fabric has water repellency, and as the angle increases, the water pressure resistance value of the fabric also increases
accordingly.
6.
Coating thickness The coating is too thin, the coating agent is not easy to form a continuous film on the surface, the water pressure resistance of the coated fabric is reduced, the coating is thick, and the water pressure resistance of the fabric is improved
.
7.
The performance of warp and weft yarn is good or bad Under the action of water pressure, the warp and weft yarn with good elasticity is easy to elongate, resulting in the formation of adjacent warp and weft yarn gaps, and water droplets are easier to seep through them, so that the water pressure resistance value of the fabric is reduced
.
8.
Coating quality requires that the whole cloth surface is uniform and has a certain fastness
.
The better the quality of the coating, the better
the resistance to water seepage.
Fabric hydrostatic pressure tester is used to measure the water seepage resistance of medical clothing, compact fabrics, such as canvas, tarpaulin, tarpaulin, tent cloth, rainproof clothing cloth and other materials, and evaluate the waterproof and moisture permeability of fabrics, which is a test equipment independently developed and produced by Standard Group (Hong Kong) Co.
, Ltd.
, with high cost performance and complete
after-sales service 。 Applicable standards: GB 19082-2009 Technical requirements for medical disposable protective clothing 5.
4.
1 Water resistance GB 4744-1997 Hydrostatic pressure test for determination of water resistance of textile fabrics GB 4744-2013 Fabric water seepage performance tester AATCC 127, ISO 16603, YYT 0700