PVA Sheets

The PVA sponge we produced is pure white, clean, uniform, comfortable and  highly flexible, which can be widely used for PVA expansion hemostatic sponge, PVA liquid absorption sponge, Negative Pressure Wound Therapy PVA sponge. The production process is applied by clean gas foaming process and phase separation technology, therefore the PVA sponge shows round and porous bubble shape in microscope by SEM(scanning electron microscope), even the pore wall shows obvious "bubble" characteristics, which essentially different from the sponge produced by starch filling process. Performance of product such as pore size, density, flexibility and tensile strength could be well controlled.

Technical Indicators of Hemostatic Sponge Dressing

Physical Properties:

Absorption rate: Less than 10 seconds

Aperture size ： 50-1200 um

Porosity is more than 90%.

Dry absorption ratio is more than 15 times

Elongation at break is greater than 120%

Dry density ：0.056-0.10g/cm³

Chemical Properties:

The pH value of leaching solution is between 6.5 and 7.8

Formaldehyde residue is less than 10 ppm

Biological Indicators:

NO CYTOTOXICITY

NO SKIN IRRITATION

NO SKIN SENSITIZATION