PVA 1788 for Paper Surface Sizing and Coating
HOPEWAY PVA 1788 in low foam grade is specifically used for paper surface sizing and coating. It improves paper surface smoothness, printability, oil resistance, and tensile strength. Cold water soluble with stable viscosity under high-speed stirring, it is compatible with kaolin coating pigment.
Key Selling Points
- Low Foam: Minimizes foam formation during high-speed stirring, ensuring smooth coating.
- Improved Printability: Enhances ink holdout and surface smoothness.
- Oil Resistance: Provides barrier properties for food packaging.
- Cold Water Soluble: Easy dissolution for efficient production.
- Stable Viscosity: Consistent quality for high-speed paper machines (300-800 m/min).
Technical Specifications
| Parameter | Value |
|---|
| Type | Partially Hydrolyzed PVA |
| Model | PVA 1788 |
| Degree of Polymerization | ≈ 1700 |
| Degree of Hydrolysis | 87-89% |
| Viscosity | 20.5-28 mPa·s |
| Solubility | Cold water soluble |
Models and Options
PVA 1788 is available in powder form. Low foam grade is standard for paper applications.
Materials and Structure
PVA is manufactured by alcoholysis of polyvinyl acetate (PVAc), offering excellent film-forming properties and strong adhesion.
Applications
- Paper surface sizing
- Coating for high-gloss printing paper
- Food packaging cardboard
- Thermal receipt paper
- Carton lamination
Customization
Custom mesh size and packaging available. Technical support for sizing formula optimization.
Case Study
Paper & Packaging Industry: In high-speed paper machine lines (300-800 m/min), PVA 1788 provides uniform coating, improving printability and oil resistance. Its low foam property ensures stable operation without defects.
FAQ
Q1: Is PVA 1788 suitable for food contact packaging?
A: Yes, it meets low odor and indirect food contact certification standards.
Q2: What is the viscosity range?
A: Viscosity is 20.5-28 mPa·s.
Q3: Can it be used with kaolin coating pigment?
A: Yes, it is compatible with kaolin.
Q4: What is the MOQ?
A: MOQ is 5 tons.
Q5: Do you provide technical support?
A: Yes, our team offers formula guidance.
Q6: What are the payment terms?
A: 30/70 T/T or L/C.
Q7: Can you supply samples?
A: Yes, samples are available.
Inquiry Information
Contact Kelvin at kelvin@xmhwchem.com or WhatsApp +86 158-8028-4585 for more details.
Image
Image: PVA 1788 powder for paper industry
