Water Soluble PVA Fiber
Overview
Water Soluble PVA Fiber is a high-performance synthetic fiber made from
polyvinyl alcohol (PVA), designed to dissolve in water under specific
conditions. Its unique solubility and excellent physical properties make it
suitable for various industrial and environmental applications. Below is an
in-depth introduction to water-soluble PVA fiber.
INQUIRE NOW
Key Characteristics
Material: Polyvinyl Alcohol (PVA), a synthetic polymer derived from vinyl acetate.
Appearance:
Typically white, soft fibers.
Available in staple or continuous filament form.
Water Solubility:
Dissolves completely in water at specific temperatures, often ranging from 20°C to 90°C,
depending on the fiber grade.
Customizable solubility thresholds based on application needs.
Biodegradability: Fully biodegradable after dissolution, making it eco-friendly.
Physical and Chemical Properties
Tensile Strength: Comparable to other synthetic fibers, ensuring durability in
applications.
Elongation: Excellent flexibility and elongation properties.
Thermal Stability:
Stable at room temperature.
Begins to decompose at elevated temperatures beyond its solubility range.
Resistance:
Resistant to oil, grease, and most organic solvents.
Vulnerable to hydrolysis in water.
Technical Specifications
|
Item
|
1.56dtex(1.4D)x38mm(90℃)
|
1.56dtex(1.4D)x38mm(80℃)
|
|
Density deviation rate (%)
|
±5
|
±5
|
|
Length deviation rate (%)
|
±5
|
±3
|
|
Soluble temperature(℃)
|
≤93
|
70-85
|
|
Dry breaking tenacity(CN/DTEX)
|
≥3.2
|
≥3.0
|
|
Crimpnumber(Piece/25mm)
|
≥3.0
|
≥3.5
|
|
Mirabilite contents (%)
|
≤0.10
|
≤0.15
|
|
Non-soluble water (%)
|
≤0.25
|
≤0.10
|
|
We also could produce the fiber according to customers’
special request.
|
Production Process
Raw Material Preparation: Polyvinyl alcohol is synthesized and processed into a
spinnable solution.
Fiber Spinning: The solution is extruded through spinnerets into a coagulating bath to
form fibers.
Post-Treatment: Fibers are stretched, dried, and treated to achieve specific solubility
characteristics.
Cutting and Packaging: Finished fibers are cut to length (if staple form) or wound onto
spools (if filament form).
Grades of Water Soluble PVA Fiber
Low Temperature Solubility: Dissolves in cold water (10°C–30°C).
Medium Temperature Solubility: Dissolves in warm water (30°C–60°C).
High Temperature Solubility: Dissolves in hot water (above 60°C).
Each grade is tailored for specific applications based on the required operating
environment.
Applications
Textiles and Nonwovens:
Temporary Support Fiber: Used as a dissolvable component in blends for producing hollow
or lightweight fabrics.
Embroidery: Provides temporary support in lace or embroidered fabrics, dissolving
completely after production.
Construction Industry:
Reinforcement Material: Acts as a temporary reinforcing agent in cement or mortar,
dissolving to leave controlled porosity or improve material properties.
Agriculture:
Seed Tape: Used to encapsulate seeds in dissolvable films for easy planting and soil
integration.
Packaging:
Water-Soluble Bags: Used in applications like detergent packaging, where the bag
dissolves upon contact with water.
Medical and Hygiene Products:
Dissolvable Sutures and Fabrics: Temporary fibers used in wound care or surgical
applications.
Industrial Cleaning:
Dissolvable Filters and Wipes: Temporary cleaning tools that dissolve in water for easy
disposal.
Safety and Handling
Storage:
Keep in a cool, dry place to prevent premature dissolution.
Avoid exposure to high humidity or direct water contact.
Handling Precautions:
Use clean, dry tools to avoid contamination.
Ensure proper ventilation in workspaces to minimize moisture exposure.
Water Soluble PVA Fiber is a versatile, environmentally friendly material with a wide
range of industrial and consumer applications. Its unique ability to dissolve in water
under controlled conditions makes it ideal for textiles, construction, packaging, and
more. As industries increasingly adopt sustainable practices, the role of water-soluble
PVA fiber is expected to grow, driving innovation and eco-friendly solutions across
various sectors.
