Opacity
Opacity is a key quality measure in paper manufacturing that tells how much light can pass through paper. It's particularly important for printing papers, where you don't want text from one side showing through to the other side. Paper makers use opacity measurements to ensure their product meets customer requirements. Think of it like checking how see-through a piece of paper is - higher opacity means less see-through, which is usually better for things like books and documents. This is one of the main properties that quality control specialists and paper machine operators need to monitor and control during production.
Examples in Resumes
Monitored and maintained opacity levels for premium printing papers
Achieved 98% opacity ratings in specialty paper production
Led team in improving opacity control systems on paper machine #4
Typical job title: "Paper Quality Control Specialists"
Also try searching for:
Where to Find Paper Quality Control Specialists
Professional Organizations
Job Boards
Industry Networks
Example Interview Questions
Senior Level Questions
Q: How would you handle a sudden drop in paper opacity during production?
Expected Answer: A senior specialist should explain the systematic approach to troubleshooting: checking fiber composition, filler content, formation issues, and adjusting machine parameters accordingly. They should mention the importance of quick response while maintaining other quality parameters.
Q: What methods have you used to improve opacity control systems?
Expected Answer: Should discuss experience with implementing or upgrading measurement systems, training operators, developing standard procedures, and coordinating with chemical suppliers to optimize additives for better opacity.
Mid Level Questions
Q: What factors affect paper opacity and how do you control them?
Expected Answer: Should be able to explain how fiber type, fillers, formation, and calendering affect opacity, and describe basic control methods for each factor.
Q: How do you measure opacity and what are acceptable ranges for different paper grades?
Expected Answer: Should know standard testing procedures and typical opacity targets for various paper grades like printing paper, packaging paper, etc.
Junior Level Questions
Q: What is opacity and why is it important in paper making?
Expected Answer: Should explain that opacity measures how much light passes through paper and why this matters for print quality and customer satisfaction.
Q: How do you perform basic opacity testing?
Expected Answer: Should describe the basic steps of using an opacity meter and maintaining testing equipment, including proper sample handling.
Experience Level Indicators
Junior (0-2 years)
- Basic opacity testing procedures
- Understanding of paper testing equipment
- Quality control documentation
- Basic knowledge of paper making process
Mid (2-5 years)
- Advanced testing methods
- Process control adjustments
- Quality troubleshooting
- Understanding of chemical additives
Senior (5+ years)
- Process optimization
- Team leadership
- Advanced problem solving
- System improvement implementation
Red Flags to Watch For
- No hands-on experience with paper testing equipment
- Lack of understanding of basic paper properties
- Poor knowledge of quality control procedures
- No experience with documentation systems
Related Terms
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