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PVA application in the textile

PVA application in the textile

PVA or polyvinyl alcohol is a water-soluble synthetic polymer that can be adapted to many changes. PVA can be made into fibers, liquids, coatings, beads, lubricants and many other forms of thread. As a filament, PVA has valuable properties.

This passage is going to talk about the followings of Polyvinyl alcohol application:

(1) Excellent properties of polyvinyl alcohol

(2) Application of Polyvinyl alcohol in Textiles

(3) Tips and knowledge for successful use of PVA in the textile industry

 

(1) Excellent properties of polyvinyl alcohol

As a filament, PVA has valuable properties:

High toughness

Low elongation

High modulus

Low creep

Heat resistance

Incompressibility

Anti-UV

Water soluble

This PVA fiber can reinforce many different materials, is soft, and is very compact compared to other materials. PVA is also highly adaptable. According to specific applications, PVA yarns can be designed to have higher or lower strength, higher or lower elongation, and various weights and thicknesses. Another benefit of PVA is that because it is water-soluble, it is easily washed off. For example, in 3D printing, PVA fibers can support the structure and then dissolve when it is no longer needed.

 

(2) Application of Polyvinyl alcohol in Textiles

Polyvinyl alcohol is the most widely used textile warp sizing composition. Polyvinyl alcohol can provide a protective coating for spun yarns and filament yarns, and can be easily dessized with hot water.

Polyvinyl alcohol can improve the warp setting performance through the following aspects:

Improved knitability: The abrasion resistance, elasticity and toughness of the yarn sizing with polyvinyl alcohol will result in a lower warp stop level.

Reduced dosage: Yarn sizing with polyvinyl alcohol can be run at a lower dosage because the adhesion and strength advantages of polyvinyl alcohol are better than natural adhesives.

Reduce shedding: Excellent abrasion resistance and adhesion of polyvinyl alcohol to synthetic fibers will reduce shedding in cutting machines and weaving chambers.

Provide excellent dimensional stability: The addition of polyvinyl alcohol has thermal stability and can be maintained at high temperatures for a longer time.

 

(3) Tips and knowledge for successful use of PVA in the textile industry

Choose the right PVOH grade to get the most benefit from your process and final product

Super hydrolysis grade has higher water resistance, but this may cause potential dimensional problems. It is generally not recommended to use these grades for warp setting.

Partially hydrolyzed grades provide excellent adhesion to polyester and other synthetic fibers. These grades generally result in the best knitability and knitability.

The most common way of warp yarn:

Polyvinyl alcohol is used with starch to prepare a fabric containing 100% cotton yarn. The first choice for ground and pile warp yarns and towels. The performance balance between fully hydrolyzed and partially hydrolyzed grades of polyvinyl alcohol. Compared with starch, it has improved adhesion to polyester and other synthetic fibers.

Polyvinyl alcohol is stronger than CMC and acrylic adhesives, and has excellent adhesion to both natural and synthetic fibers. In the process of downsizing, it can be easily removed with hot water.

Polyvinyl alcohol has good adhesion to polyester and other synthetic fibers. Provide the best weaving and desizing performance. But defoamer should be added.

Polyvinyl alcohol grades are divided into fully hydrolyzed and partially hydrolyzed, and are specially created for textile sizing applications.

 

 

 


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