Plastic bottles factory
ISO 9001:2015 Quality Management in Plastic Bottle Manufacturing
ISO 9001:2015 certification demonstrates commitment to consistent quality management in plastic bottle production. This article examines the quality control processes implemented in our manufacturing facility.
Quality Management System Overview
Our ISO 9001:2015 certified facility implements comprehensive quality controls across all production stages:
- Clause 8.1: Operational planning and control
- Clause 8.5.1: Production and service provision control
- Clause 8.6: Release of products and services
- Clause 9.1: Monitoring, measurement, analysis and evaluation
In-Process Quality Controls
- PET Preform Inspection: Weight tolerance ±0.5g, IV value verification
- Blow Molding Parameters: Temperature control ±2°C, pressure monitoring
- Dimensional Checks: Height ±0.5mm, diameter ±0.3mm, wall thickness ≥0.35mm
- Visual Inspection: Black specks ≤0.5mm, no crystallization defects
Statistical Process Control (SPC)
Real-time SPC monitoring with Cpk ≥1.33 for critical dimensions:
- X-bar and R charts for weight control
- Pareto analysis for defect categorization
- Capability studies (Cp, Cpk, Pp, Ppk)
- Gage R&R studies for measurement systems
Corrective and Preventive Actions (CAPA)
✓ Root cause analysis using 5-Why methodology
✓ Fishbone diagrams for complex issues
✓ 8D problem-solving reports
✓ Continuous improvement tracking
Customer Quality Requirements
We support customer-specific quality agreements including AQL sampling plans (ISO 2859-1) and PPAP documentation.
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