Water Soluble Polyester Chip for Yarn Spinning, Warp Sizing, and Fabric Coating

Textile Grade Water-based Polyester chip as Textile Chemicals and Spinning Raw Material

Water-soluble polyester chip is entirely water-based polyester resin with high stability and can be 100% dissolved in water without alcohol or other solvents. This thermoplastic polymeric material is made from terephthalic acid (PTA) with mono ethylene glycol (MEG).

Application:

1. Yarn Spinning
Because of the excellent water solubility, many manufacturers use it to produce value-added specialty fibers, like microfiber, sea-island fibers, porous fibers, and highly hygroscopic fibers.
Water Soluble PET chips can be used for the production of Sea-island PSF and Filaments with composite spinning equipment.
Sea-island Filaments can produce clothing, sofa, home textiles, etc. Sea-island PSF is applied for the interior decorative material of luxury cars, like BMW.
If the plant is not equipped with a composite machine, the Water-Soluble PET chip can also act as the raw material for yarn spinning. Such yarn can manufacture hollow-carved fabrics.
Parameters Table

Items Unit Test Result Standard
Intrinsic Viscosity dl/g 0.536 M1 ± 0.01
Melting Point 246 246±1
Color Value b 3.7 M2 ± 1.5
Carboxyl End Groups (COOH) mol/t 5.8 10±5
Moisture Content % 0.2 ≤0.4
Agglomerate Particle pce/mg 1.2 ≤3.0
Diethylene Glycol (DEG) % 2.8 3.0±0.5

2. Fabric Coating
It can be used for finishing fabrics to add the feel, stiffness, and good printing surface. And also we can formulate the recipe and make the water-proof polymer.

3. Dyeing Process
It can act as a factor to retard dye migration in thermosol dyeing. During the dyeing process of disperse dye, a migration inhibitor is usually recommended.

4. Warp Yarn Sizing
Because of the similar structure with Terylene, WSP resin is mainly used for Warp Yarn Sizing.
It can completely replace modified starch, PVA, acrylics, or other binders during the sizing process of polyester filament, like pure polyester filaments(FDY, DTY)
And it can be used in combination with starch and wax for sizing polyester staple fiber, organic cotton yarn, polyester/cotton blend yarn,  polyester/viscose compact yarn. In this condition, it can replace PVA. The replacing ratio between PVA to resin is from 1:2 to 1:5.
Features:
Non-toxic and odorless, fully replacing PVA, Acrylics, CMC & other binders
Excellent adhesion performance, no hairiness problem
Strong coating film and high weaving efficiency, no yarn breakage
Easy desizing process
Eco-Friendly, no extra load for a water-treatment plant
Parameters Table
Product Model: WSP-010 (specialty resin for filament, like FDY, DTY)

No. Property Standard Value Technical Data
1 Intrinsic Viscosity M0 ± 0.02 0.401 dl/g
2  

Color Value

L ≥45 49.23
B M1 ± 2 0.78
A -1.24
3 Solubility M2 ± 3 27.6 min
4 Moisture Content ≤1 0.78%
Remark:
M0 is the central value for IV. It should be 0.41dl/g, when there is no special requirement.
M1 is the central value for color value. It should be 0, when there is no special requirement.
M2 is the central value for solubility. It should be 25, when there is no special requirement.
The solvent for IV test is 50% phenol and 50% tetrachloroethane under the temperature of 25℃.
Color value test is based on the Hunter method.
All the above items are tested according to GB/T14190-93.

Product Model: WSP-020 (specialty resin for PSF, cotton and p/c blend)

No. Property Standard Value Technical Data
1 Intrinsic Viscosity M0 ± 0.015 0.31 dl/g
2  Diethylene Glycol 8.52
3  

Color Value

L ≥45 49.98
B M1 ± 2 1.72
A -1.24
4 Solubility M2 ± 2 9.5min
Remark:
M0 is the central value for IV. It should be 0.30dl, when there is no special requirement.
M1 is the central value for color value. It should be 0, when there is no special requirement.
M2 is the central value for solubility. It should be 9, when there is no special requirement.
The solvent for IV test is 50% phenol and 50% tetrachloroethane under the temperature of 25℃.
The color value test is based on the Hunter method. DEG is tested by Japan Shimazu chromatograph.
All the above items are tested according to GB/T14190-93.

Here is the process of making resin solution:
1 Add water in tank-start stirring
2 Heat the water-add resin gradually when temperature reach 80℃
3 Add some anti-foaming agent during mixing until no foam
4 Cook the resin for 1.5 hours at 95℃
5 Cool down the solution and stir 20-30 minutes under 50-60℃ until fully dissolved
6 Filter solution by 200-mesh filter net
7 Use it in the machine
Note:
1. About anti-static agents, you can add some according to the real situation.
2. Solid percentage in water: 13%-16% (based on the machine condition)
3. Pick-up percentage on yarn: depends on machine condition (6% dry pickup on solid bases)
4. The Water to Cook Solution:
We suggest De Mineral (DM) Water or Distilled Water or Reverse Osmosis (RO) water.
If water is good, 50% problem is eliminated in the cooking process. We strongly recommend the manufacturers to use the water we recommend above. Because the tape water has high TDS and is solid, which will make the resin undissolved. Harness in normal water is responsible for poor solubility. So soft water with a hardness of 10ppm is the best option. And the total TDS should not be higher than 50ppm.