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) and monoethylene glycol (MEG).
Application:
1. Yarn Spinning
Because of its excellent water solubility, many manufacturers use it to produce value-added specialty fibers, such as microfibers, sea-island fibers, porous fibers, and highly hygroscopic fibers.
Water-soluble PET chips can be used to produce Sea-island PSF and Filaments with composite spinning equipment.
Sea-island Filaments can produce clothing, sofas, home textiles, etc. Sea-island PSF is applied to the interior decorative materials of luxury cars, such as BMWs.
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 be used to 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 to finish fabrics, adding feel, stiffness, and a good printing surface. We can also formulate the recipe and make the waterproof polymer.
3. Dyeing Process
It can act as an antimigrant in thermosol dyeing. The antimigrant agent is usually used in blended fabric (polyester/cotton or polyester/viscose). For pure polyester fabric dyeing, only a dispersing agent is needed.
WSP resin can also improve color dispersion in the grey fabric during the dyeing process.
4. Warp Yarn Sizing
Because of the similar structure to 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, and polyester/viscose compact yarn. In this condition, it can replace PVA. The replacement ratio of PVA to resin ranges 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, with 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 the 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 the IV test is 50% phenol and 50% tetrachloroethane at 25℃. The color value test is based on the Hunter method. All the above items are tested in accordance with GB/T14190-93. |
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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 0.30 dl when there is no special requirement. M1 is the central value for the 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 the IV test is 50% phenol and 50% tetrachloroethane at 25℃. The color value test is based on the Hunter method. DEG is analyzed using a Shimadzu Japan chromatograph. All the above items are tested in accordance with GB/T14190-93. |
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Here is the process of making a resin solution:
1 Add water to the tank, and start stirring
2 Heat the water, and add resin gradually when the temperature reaches 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 for 20-30 minutes under 50-60℃ until fully dissolved
6 Filter solution by a 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, Distilled Water, or Reverse Osmosis (RO) water.
If water is good, 50% problem is eliminated in the cooking process. We strongly recommend that the manufacturers use the water we recommend above. Because the tap water has high TDS and is solid, it will make the resin undissolved. Harnessing normal water is responsible for poor solubility. Soft water with a hardness of 10 ppm is the best option. And the total TDS should not exceed 50 ppm.