PVC Ningbo Formosa Plastics S‑65
PVC Ningbo Formosa Plastics S‑65 Resin
Material Introduction: PVC Ningbo Formosa Plastics S‑65 is a general‑purpose suspension‑polymerized polyvinyl chloride resin. Thanks to its outstanding plasticizer‑absorbing capacity and balanced processing performance, it is especially suitable for various soft‑grade products, and can also be applied to rigid‑grade articles.
Main Applications
Soft‑grade Products (P‑PVC): Films, sheets and artificial leather: soft films, packaging films, soft sheets, artificial leather, etc., leveraging its high plasticizer absorption and flexibility.
Wires and cables: used as insulating layers and sheaths for wires and cables to provide flexibility and certain electrical insulation performance.
Rigid‑grade Products (U‑PVC): Available for rigid articles such as pipes and profiles, while formula adjustment shall be noticed.
Performance Parameters
| Test Item | Test Condition | Test Method | Superior Grade | First‑Grade | Qualified Grade | Unit |
|---|---|---|---|---|---|---|
| Bulk Density | ‑ | GB/T 3402‑1994 | 0.50‑0.56 | 0.50‑0.56 | 0.50‑0.56 | g/ml |
| Plasticizer Absorption per 100 g Resin | ‑ | GB/T 3400‑2002 | ≥24 | ≥24 | ≥24 | g |
| Sieve Residue (0.25 mm sieve) | ‑ | GB/T 2916‑1997 | ≤1.0 | ≤1.0 | ≤2.0 | % |
| Sieve Residue (0.063 mm sieve) | ‑ | GB/T 2916‑1997 | ≥95 | ≥95 | ≥90 | % |
| Impurity Particle Count | ‑ | GB 9348‑1988 | ≤16 | ≤30 | ≤80 | pcs |
| Whiteness | 160℃, after 10 min | GB/T 15595‑1995 | ≥80 | ≥80 | ≥75 | % |
| Volatile Matter Content (including water) | ‑ | GB/T 2914‑1999 | ≤0.30 | ≤0.30 | ≤0.30 | % |
| Residual Vinyl Chloride Content | ‑ | GB/T 4615‑1984 | ≤2 mg/kg or ≤3 ppm | ≤2 mg/kg or ≤3 ppm | ≤2 mg/kg or ≤3 ppm | mg/kg or ppm |
| Fish‑eye Count | ‑ | GB/T 4611‑1993 | ≤20 | ≤40 | ≤90 | pcs/400cm² |
| Average Degree of Polymerization | ‑ | ‑ | ‑ | ‑ | ‑ | 1030±30 |
| K‑Value | ‑ | ‑ | 65.3‑66.6 | ‑ | ‑ | ‑ |
Extrusion Processing
| Process Parameter | Reference Range | Unit | Remarks |
|---|---|---|---|
| Barrel Temperature (Rear Section) | 140‑155 | ℃ | Feeding section; prevent premature plasticization or bridging |
| Barrel Temperature (Middle Section) | 150‑165 | ℃ | Compression section; material starts melting and plasticizing |
| Barrel Temperature (Front Section) | 160‑175 | ℃ | Metering section; homogenize melt |
| Die‑head Temperature | 165‑180 | ℃ | |
| Die Temperature | 170‑180 | ℃ | |
| Screw Speed | 20‑50 | rpm | Adjust according to screw diameter and product requirements |
| Melt Temperature | 165‑180 | ℃ | Actual measured value |
Calendering Processing
| Process Parameter | Reference Range | Unit | Remarks |
|---|---|---|---|
| Roll 1 Temperature | 150‑160 | ℃ | |
| Roll 2 Temperature | 155‑165 | ℃ | |
| Roll 3 Temperature | 160‑170 | ℃ | |
| Roll 4 Temperature | 155‑165 | ℃ | |
| Roll Speed Ratio | 1:1.05‑1.3 | ‑ | Adjust according to product thickness and requirements |
Disclaimer: All above data is for reference only.
