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PVA sponge
We have PVA sponge project with an air foaming process of PVA sponge production, which meets the needs of 5 cubic high quality clean medical PVA sponge per day, which include Nasal dressing, Ear Wick, VAC(Vacuum Assisted Closure) /NWPT PVA Sponge, Expansion Hemostatic PVA Sponge and so on.
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:




Packing & Storage


In 20kg paper bag.

Storage Powder 20°C 2 years; Floccule 20°C 2 years.
Shipping Room temperature 5-30℃ in China; may vary elsewhere
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Frequently Asked Questions

The PVA sponge is pure white, clean, uniform, comfortable and highly flexible, which can be widely used for PVA expansive hemostatic sponge, Liquid absorbing sponge PVA 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), and the pore wall shows obvious "bubble" characteristics, which is essentially different from the sponge produced by starch filling process. Performances of product such as pore size, density, flexibility and tensile strength could be well controlled.

How is PVA Sponge produced?

Raw material preparation: After mixing PVA and water in a certain ratio, the mixture was heated to obtain a PVA aqueous solution. Next, corn starch was added as a pore-forming agent, formalin was added and stirred, and then sulfuric acid was added as a catalyst.
Mold procession:
Pour the prepared PVA material into the mold and add the appropriate amount of foaming agent.
Put the mold into the injection molding machine.
Use high temperature and high pressure to press the material into the required shape, drying and polishing after solidification.

What is PVA Sponge used for?

Medical industry: PVA sponges are often used as single-use surgical dressings to absorb internal exudate during surgery, to support organs and tissues, and to fill cavities (e.g., nasal passages) to stop bleeding.
Its sterile provision and single-use properties ensure safe and hygienic medical practices.
Industry: PVA sponges are often used in industry for equipment cleaning and maintenance. Their absorbency and stain resistance effectively remove oil, dust, and other contaminants from equipment surfaces. At the same time, PVA sponge also has anti-static properties, which can prevent static electricity from causing damage to equipment.
Clean room field: PVA sponges are widely used in clean rooms for cleaning and maintenance. Their excellent dust-absorbing and anti-static properties effectively remove particles and static electricity in the clean room, ensuring its environmental quality. Glass and electronic product cleaning:
PVA sponges are suitable for cleaning and drying horizontal glass, automotive glass, glass products, printed substrates, lead frames, photomasks, substrates for liquid crystal displays, and so on.
It is also suitable for cleaning films, plastics, and metal plates.
Other fields: PVA sponges can also be used to clean and absorb water from tires and mats and to absorb water adhering to the manufacturing process of food processing, packaging, and steaming bag food. In water-soluble adhesives, coatings, static preventive agent humidification, coating and other applications, PVA sponge also plays an important role.

How is PVA Sponge packaged and stored?

Packaging: Make sure the PVA sponges are sealed well to prevent dust and other contaminants from entering. If the sponge is unused, it is best to keep it in its original packaging.
Storage:PVA sponges should be stored in a dry and cool environment to avoid moisture. A high-humidity environment may cause the sponge to absorb water, deform, or become moldy, affecting its effectiveness.
Avoid contact with contaminants, such as dust, chemicals, etc., to avoid reducing the cleanliness and effectiveness of the sponge.

What are the safety precautions for the use of PVA Sponges?

PVA sponge itself is non-toxic, odorless, biocompatible, non-irritating to the skin, and biodegradable, making it relatively safe to use. However, it can be contaminated by additives and manufacturing processes during production and use. Factors such as processing or storage conditions can introduce other substances that may be harmful to the human body. Therefore, when using a PVA sponge, please choose a regular brand, follow the instructions for use, and avoid prolonged contact or accidental ingestion. If experiencing any discomfort or abnormal reaction during use, seek medical advice immediately and consult a healthcare professional.

400 Micron Scanning Electron Microscope Picture Benefits

1.No fiber and crumbs will drop during surgery, no reinfection.
2.Soft, comfortable & painless.
3.Instantly liquid absorption ability and the absorption is 10-18 times its weight.
4.Stops nose bleeding fast, absorbs wound exudates massively.
5.Moist dressing, no second damage upon removal.
6.Better biocompatibility and no rejection reaction.
7.Highly swelled after absorbing liquid, form micro-negative pressure which is beneficial to wound healing

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