In all chemical applications, physics comes first; when it comes to powder quality, mesh size is paramount. Polyvinyl alcohol, known in the West as PVA, is a water-soluble polymer. It is produced by converting acetylene through polymerization and hydrolysis. It is white and odorless, lightweight and sticky, and dissolves in water to form a colloid-like substance. Its applications are wide-ranging, encompassing building materials, adhesives, paper, textiles, and ceramics. However, the finished product varies in coarseness and fineness, commonly referred to as "mesh number," which refers to the degree of mesh size in a sieve. We will now detail the various methods used by various manufacturers for their benefit.

 

Mesh Number Explanation
The coarseness of a powder is determined by the sieve. Mesh number refers to the number of openings in a square inch. Ten mesh means large openings, while 120 mesh means fine as dust. The higher the mesh number, the finer the powder and the faster it dissolves. Coarse powders clump together and are difficult to disperse, while fine powders separate without clumping, making them suitable for both instant dissolution and uniform mixing. The difference in industrial applications lies in the mesh number.

 

Production by Factory:

1. Wanwei Factory

Produced in the Jianghuai region, with sophisticated equipment, a wide variety of products and a wide range of mesh sizes:

10-mesh, millet-sized particles suitable for coarse mixing

15- and 20-mesh, widely used in various industries

80- and 120-mesh, powder-like fineness suitable for fine mixing and automated machinery

Models produced include 1799, 2488, 088-50, and 098-15, all of which are optional.

 

2. Dadi Factory (Ningxia)

Located in the northwest, with harsh soil and water, the factory is well-maintained and produces uniform powders. The mesh sizes produced are as follows:

10-mesh, full particles suitable for simple processes

25-, 80-, and 120-mesh, fine particles particularly suitable for redispersible powders, mortar adhesives, etc.

Models such as 088-20, 1788, and 1799 are always in stock and can be customized to order.

 

3. Shuangxin Factory (Shandong)

Qilu, a region with a flourishing chemical industry, boasts Shuangxin products renowned for their exquisite craftsmanship:

12-mesh, coarse enough for conventional machinery feeding

25-, 80-, and 120-mesh sizes are specifically designed for precision batching and rubber powder systems

Consistent batches and a constant supply ensure customer satisfaction.

 

4. Jinshu and Yinghang Factories

While these two are not renowned, their quality is guaranteed. They offer mesh sizes ranging from 10 to 120, meeting the needs of delicate work. They are particularly well-suited for small factories with flexible orders.

 

How to Choose the Right Mesh Size

For any job, mesh size is crucial. The general outline is as follows:

For quick dissolution, a 120-mesh fine powder is ideal, dissolving immediately in water.

For uniformity, a 80-mesh fine powder or finer is ideal, ensuring smooth mixing without clumping.

For rough equipment, a 10-25-mesh fine powder is sufficient.

For applications with varying final product qualities, fine powder is preferred for emulsion polymerization; for paper sizing, a coarse powder is acceptable.

 

For requests for detailed specifications, samples, process requirements, tariff information, and declaration forms, please write to us. We will respond with utmost sincerity.