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plastic mold Quality Control
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Plastic Mold Quality Control
Established Date:
June 29, 2007
Categories:
Industry, Plastic Mold Manufacturing
Location:
Ningbo, China
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Generally, four different stages of quality control are performed in plastic injection molding. The first stage is the design stage, followed by Mold and Pre-Production Inspection Process, Quality Control, and Final Inspection.
Inspection of Incoming Materials
All purchased products incorporated into DSW final products are subject to a detailed technical Quality Control (Q.C.) inspection. Material certifications are kept on file for all incoming shipments of thermoplastic resins.
The design of your product will determine how much material is needed for each part, as well as how many pieces you’ll need for each product batch. If you’re using more than one material for your product, this stage also includes deciding which materials will be most efficient for injection molding.
New Part Qualification
Before a new part can be released to production, it goes through a qualification process that varies in intensity depending on customer requirements, engineering complexity, and quality constraints. The qualification methods may include some or all of the following:
- First Article Inspection
- Process Capability Study
- Pre-production runs to produce a limited number of samples
- Production Part Approval Process (PPAP)
- ECN Release to Production after customer approval
Throughout the production cycle, plastic injected molded components and assemblies is checked to verify their compliance with all required specifications. Typical verification and inspection processes include dimensional, functional, and destructive tests.
Our Inspection Lab ( 3rd party)features state-of-the-art equipment to ensure compliance with the most demanding part and assembly specifications and tolerances:
- Microval Coordinate Measuring Machine (CMM) with Quadra-Check 3D software
- OGP Optical Comparator with Smart Edge Detection
- Additional standard measuring/testing devices such as calipers, micrometers, thread & height gages, surface plates, etc.
To ensure compliance and continual improvement, our quality assurance system is monitored through a variety of techniques, as appropriate for a particular process and its importance. These include:
- Conducting internal audits of the quality system
- Monitoring trends in corrective and preventive action requests
- Analyzing product conformity and other quality performance data and trends
- Measuring and monitoring customer satisfaction through periodic surveys
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