Quality Control-From Raw Materials to Finished Boards, Ensuring Consistent Quality in Every Panel
At Chitu, quality control is integrated into every stage of production. From raw material selection and formulation to extrusion molding, surface treatment, and final packaging, every PVC foam board is manufactured in accordance with rigorous standards, ensuring both durability and consistent quality.
1. Raw Material Selection & Incoming Inspection
All raw materials used in production are carefully selected and inspected to ensure stable product quality.
Key controls include:
PVC resin quality verification for purity and consistency
Additive inspection including stabilizers, foaming agents, and modifiers
Moisture and impurity checks before production
2. Production Formula Control
Stable product performance begins with precise formulation control.
Our technical team ensures:
Accurate material ratio control for consistent density and strength
Process parameter monitoring during mixing and extrusion
Optimization of foaming structure for uniform cell distribution
Continuous evaluation of production data to maintain batch consistency
3. Manufacturing Process Monitoring
Throughout the production line, multiple checkpoints monitor product quality in real time.
Process inspections include:
Extrusion temperature and pressure monitoring
Foaming structure stability inspection
Board thickness and density measurement
Surface flatness and structural integrity control
4. Surface Quality Inspection
After forming, boards undergo detailed visual and surface inspections.
Inspection items include:
Surface smoothness and uniformity
Color consistency and appearance quality
Edge integrity and trimming accuracy
Defect detection such as bubbles, scratches, or deformation
5. Physical Performance Testing
Random samples from each production batch are tested to verify mechanical performance.
Testing may include:
Density and weight verification
Bending strength evaluation
Impact resistance testing
Water absorption performance
Dimensional stability assessment
These tests ensure the boards perform reliably in construction, advertising, and industrial environments.
6. Final Product Inspection & Sorting
Before packaging, finished boards undergo final inspection and classification.
Key checks include:
Thickness tolerance verification
Size accuracy confirmation
Surface cleanliness inspection
Quality grading and batch identification
Each batch is recorded to maintain production traceability.
7. Packaging Protection & Shipment Preparation
To ensure products arrive in perfect condition, boards are carefully packaged for transportation.
Packaging procedures include:
Protective film application when required
Corner protection and reinforced stacking
Moisture-resistant wrapping
Export-standard packaging for international shipping
This minimizes the risk of damage during handling and transport.