Introduction: Why Is Selecting the Right PVC Paste Resin Crucial?
In PVC processing, PVC Paste Resin is one of the core raw materials in formulation design. Its technical parameters—such as K-value, viscosity, particle size distribution, and degree of polymerization—directly impact the foaming performance, transparency, mechanical strength, and processing stability of the final product. As application scenarios become increasingly diversified, choosing the appropriate paste resin has become key to enhancing product performance and manufacturing efficiency.
PVC Paste Resin Classification: General-Purpose vs. Functional
General-Purpose PVC Paste Resin
General-Purpose PVC Paste Resin
Serving as the formulation backbone, it is widely used in synthetic leather, wallpaper, flooring, and sealants. Key performance criteria focus on foamability, transparency, mechanical strength, and processing stability.
Representative Models: PF621, PG680, PG740, PC750, PG770
Functional PVC Resin
Engineered with specific functional properties, these resins are typically added in smaller proportions to fine-tune formulation characteristics, such as matte finish, viscosity reduction, or rapid gelation.
Representative Models: KR-51 (Fine Matte Grade), K13S (Coarse Matte Grade), KCM-12 (Low-Temperature Gelation), KR-16 (Viscosity-Reducing Resin), PBM-B5F (Economical Viscosity-Reducing Resin)
Technical Parameter Analysis & Comparison
Technical parameters for each model—such as K-value, viscosity, degree of polymerization, and particle size—are detailed on the “Detailed Introduction to PVC Paste Resin“ page. This section explains how to select the right model effectively based on these parameters, processing methods, and product requirements.
Applications → Recommended Grades
| Application | Recommended Grades |
|---|---|
| Tarpaulin | PG740 (Durable), PC750 (High Gloss), PG770 (High Strength) |
| Synthetic Leather | PG680 (Foam Layer), PG740 (Topcoat), PG770 (High Strength), PC750 (High Gloss) |
| Flooring | PG680 (Foam Layer), PG740 (Topcoat), PG770 (High Strength), PC750 (Topcoat) |
| Wallpaper | PF621 (High Whiteness) |
| Automotive | PG680/740/770 (Sealants) |
Common Processing Troubleshooting & Recommendations
| Problem / Defect | Possible Cause | Recommended Solution Grade |
|---|---|---|
| Coarse & uneven cell structure | Insufficient foamability, unstable viscosity | Switch to PF621 or PG680 (High foamability, fine cell structure) |
| Excessive viscosity, poor flowability | High resin viscosity, high filler ratio | Blend with KR-16 or PBM-B5F (Viscosity-reducing resins) |
| Overly glossy, unnatural surface | Extremely fine particle size, high surface tension | Blend with KR-51 or K13S (Matte resins) |
| Slow gelation rate | Low plasticizer ratio, slow resin reaction | Blend with KCM-12 (Fast gelation resin) |
| Insufficient topcoat strength | Low degree of polymerization, lower K-value | Switch to PG740 or PG770 (High K-value, high strength) |
| Poor transparency | Large particle size, impurities | Switch to PC750 (High transparency, high gloss) |
Note: Fine-tuning based on actual formulation ratios and processing conditions is recommended. Feel free to contact the JUYEE technical team for tailored support.