PVA pore structure an overview of properties:
The structure of Polyvinyl Alcohol (PVA) originated in Germany. A compound of water soluble PVA acetalised with a catalyst. During the acetalising process, the pore forming agent is added. After a water soluble porous structure is made, the agent is then extracted. The sponge has a completely three dimensional, interconnected porous structure.
PVA pore structure benefits
The pore structure of PVA sponge is continuous. Each of its pores are interconnected thus making the PVA sponge act as a filter element. Being Hydrophilic, its feature of absorbing and retaining water is markedly greater than other materials. When in the wet state it is very elastic, flexible and soft like a natural sea sponge. It qualifies as one of the finest materials for cosmetic sponges and puffs, towels, bath sponges, pva chamois, mops and all household-cleaning materials. Durable and long lasting, it is excellent in mechanical strength and abrasion resistance. Comparing to other types of synthetic sponges or foam, it is quite resistant to sunlight and ultraviolet rays.
Pore sizes
A range of pore structures from 60 micron to 2000 or larger micron are available. To maximise the absorbency, scrubbing ability, and soft to the touch texture, our products are engineered to meet the certain characteristics specified by the customer's requirements, and we can recommend a pore size that best fits your needs.
PVA comparison
The advantages of the absorbing capability and softness of PVA makes it the best cleaning material for auto-washing. The two types of regular products are:
Chamois
A kind of synthetic chamois that holds more water than real chamois. We provide the full range of products, sizes, colours, imprinting, with or without mesh, cellular or wharf surfaced, together with suitable containers.
Sponges
There are 4 main types of PVA sponge with differing characteristics - A handy tool to hold a large volume of water and to capture dust and particles. These blocks are manufactured in different sizes, appearances, colours and pore sizes to meet customers' requirements.
Type 1 (Sponge block)
| Characteristics | Super absorbent 3 to 5 times more than normal towel, biodegradable, feather like texture (Auto cleaning : especially useful to absorb water after washing because of high density) (Cosmetics : specially to remove cosmetics from face). |
| Density | High density |
| Machine washable | Yes |
| Durability | Durable |
| Main purpose | Auto Cleaning, household cleaning, cosmetic type |
| Nature of PVA products | When it becomes completely dry, it will become hard. Simply use cleaning water or warm water to soften again. |
Type 5 (Foaming sponge block)
| Characteristics | Super absorbent 3 to 5 times more than normal towel, biodegradable, feather like texture (Auto cleaning : Use this type of sponge to wash cars because of random pore structure easily picks up dust) (Cosmetics : especially useful to remove cosmetics from face) (Bath use: specially for bubble bath). |
| Density | Random pore structure |
| Machine washable | Yes |
| Durability | Durable |
| Main purpose | Auto Cleaning, household cleaning, cosmetics, bath use |
| Nature of PVA products | When it becomes completely dry, it will become hard. Simply use cleaning water or warm water to soften again. |
Type 3/4 (Wax Puff)
| Characteristics | Super absorbent 3 to 5 times more than normal towel, biodegradable, feather like texture (Auto cleaning : this type of sponge to polish wax on the car surface because of ultra soft type may make wax become more smooth on the car surface) (Cosmetics : especially to remove cosmetics from face, ultra soft type) (Bath use: especially useful to form bubbles in the bath). |
| Density | Soft type average pore structure |
| Machine washable | Yes |
| Durability | Durable |
| Main purpose | Auto Cleaning, cosmetics, bath use |
| Nature of PVA products | When it becomes completely dry, it will become hard. Simply use cleaning water or warm water to soften again. |
Imitation sea sponge type
| Characteristics | Super absorbent 3 to 5 times more than normal towel, biodegradable, feather like texture (Auto cleaning : specially use to wash car) (Cosmetics : especially to remove cosmetics from face) (Bath use: as the structure almost the same as natural sea sponge, it can be one good choice to replace natural sea sponge market). (Painting : use the sponge to paint the wall and to have special design on the wall / picture). |
| Density | Natural-like sea sponge type |
| Machine washable | Yes |
| Durability | Durable |
| Main purpose | Bath, cosmetics, painting, auto cleaning, household cleaning. |
| Nature of PVA products | When it becomes completely dry, it will become hard. Simply use cleaning water or warm water to soften again. |
Contact us to discuss your requirements or quote for custom items