CPE Testing & Quality Assurance 5

Question 1

Which TAPPI test method measures the bursting strength of corrugated and solid fiberboard?

Accepted Answer

TAPPI T810

Answer

TAPPI T810 specifies the Mullen burst test for corrugated and solid fiberboard, measuring resistance to rupture under hydraulic pressure.

Question 2

A packaging engineer applies a control chart to monitor seal strength. A single point falls above the upper control limit. This is best described as:

Accepted Answer

A special cause signal requiring investigation

Answer

A single point beyond a control limit is one of the Western Electric rules signaling a special cause that warrants immediate investigation to identify and eliminate the assignable cause.

Question 3

What is the significance of the Critical-to-Quality (CTQ) tree in packaging development?

Accepted Answer

Maps customer requirements to measurable packaging specifications

Answer

A CTQ tree translates voice-of-the-customer requirements through drivers and needs into specific, measurable packaging quality characteristics.

Question 4

During a humidity conditioning test per ASTM D4332, why is pre-conditioning of corrugated samples required before compression testing?

Accepted Answer

To equilibrate moisture content and ensure consistent, reproducible test results

Answer

Pre-conditioning standardizes the moisture content of corrugated specimens because paper-based packaging is highly sensitive to humidity, which dramatically affects compressive strength.

Question 5

Which technique is most appropriate for detecting delamination defects in a multi-layer flexible laminate without cutting the material?

Accepted Answer

Ultrasonic C-scan imaging

Answer

Ultrasonic C-scan imaging uses high-frequency sound waves to detect internal voids, delaminations, or bond failures in laminates non-destructively.

(CPE) Certified Packaging Engineer Practice Test

(CPE) Certified Packaging Engineer Practice Test

CPE Testing & Quality Assurance 5