Quality Control Report for Green Plastic PP Film Faced Plywood Exported to South America and the Middle East
Introduction
This report outlines the quality control measures for Green Plastic PP Film Faced Plywood, a construction material widely used in formwork systems. The product is exported to South America and the Middle East, where high standards of durability, water resistance, and surface finish are required. The report covers the primary raw materials, specifications of the green plastic PP film, quality classification, finished product inspection, common defects, and standard dimensions.
1. Primary Raw Materials
The production of Green Plastic PP Film Faced Plywood involves the following key raw materials:
- Core Veneer: High-quality hardwood or softwood veneers are used as the core material. The wood species must meet international standards for strength and durability.
- Phenolic Resin: Used as an adhesive to bond the veneers, phenolic resin ensures water resistance and structural integrity.
- Green Plastic PP Film: A polypropylene film coated with a green-colored layer for UV resistance, water repellency, and smooth surface finish. The film is applied to both sides of the plywood.
2. Green Plastic PP Film Specifications
The green plastic PP film is a critical component that determines the performance and appearance of the plywood. Key specifications include:
- Thickness: The film thickness typically ranges from 120 to 150 microns, ensuring durability and resistance to wear during construction use.
- Quality Grades:
- Grade A: Superior surface finish with no visible defects, suitable for high-end projects requiring a smooth concrete finish.
- Grade B: Minor imperfections allowed, suitable for general construction purposes.
- Grade C: Permits more visible defects, typically used for temporary structures or less critical applications.
3. Finished Product Inspection
The finished Green Plastic PP Film Faced Plywood undergoes rigorous inspection to ensure compliance with international standards. Key inspection parameters include:
- Surface Quality: The surface must be free from bubbles, wrinkles, and uneven coating.
- Adhesion Strength: The PP film must be firmly bonded to the plywood surface without peeling.
- Moisture Resistance: The plywood must withstand prolonged exposure to water without delamination.
- Flatness: The panels must be flat within specified tolerances to ensure proper alignment during use.
- Edge Sealing: The edges must be properly sealed to prevent water penetration.
4. Common Defects
During production and inspection, the following defects may occur:
- Bubbles: Air trapped between the film and plywood surface, affecting adhesion and appearance.
- Scratches: Surface damage caused during handling or production.
- Delamination: Separation of the veneers or film due to inadequate adhesive application.
- Warping: Deformation of the plywood panel due to improper drying or storage.
- Uneven Coating: Inconsistent application of the PP film, leading to variations in surface texture.
5. Standard Dimensions
The Green Plastic PP Film Faced Plywood is available in standard sizes to meet the requirements of different construction projects. Common dimensions include:
- Thickness: 12mm, 15mm, 18mm, and 21mm.
- Length: 2440mm, 2500mm, and 3000mm.
- Width: 1220mm and 1250mm.
Custom sizes can be produced based on client specifications.
Conclusion
The Green Plastic PP Film Faced Plywood is a high-performance construction material designed to meet the demands of the South American and Middle Eastern markets. Strict quality control measures are implemented throughout the production process to ensure the product meets international standards for strength, durability, and surface finish. By addressing common defects and adhering to precise specifications, the product delivers reliable performance in various construction applications.
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