Packaging and Label Design Packaging Materials and Substrates

Question 1

What does 'OTR' stand for in flexible packaging?

Accepted Answer

Oxygen Transmission Rate

Answer

OTR measures how much oxygen passes through a packaging film over time; a low OTR is critical for oxygen-sensitive products like meats and snacks.

Question 2

What is the main advantage of HDPE (High-Density Polyethylene) for packaging?

Accepted Answer

High stiffness, chemical resistance, and recyclability making it ideal for bottles and containers

Answer

HDPE's rigidity, chemical resistance, and widespread recyclability (resin code #2) make it a top choice for milk jugs, detergent bottles, and food containers.

Question 3

What is a 'coextruded' film in flexible packaging?

Accepted Answer

A film made of multiple polymer layers simultaneously extruded together for combined functional properties

Answer

Coextrusion combines layers of different polymers in a single extrusion step, allowing designers to engineer specific combinations of barrier, seal, and structural properties.

Question 4

What is 'SBS' board in packaging?

Accepted Answer

Solid Bleached Sulfate — a premium white paperboard used for cosmetics, food service, and folding cartons

Answer

SBS is a high-quality, clay-coated paperboard made from virgin bleached fibers, valued for its bright white appearance and printability in premium folding carton applications.

Question 5

What is 'MVTR' (or WVTR) in packaging specifications?

Accepted Answer

Moisture Vapor Transmission Rate — measures how much water vapor passes through a material

Answer

MVTR quantifies how much moisture vapor permeates through a packaging film or barrier, critical for products sensitive to humidity like crackers or dried goods.

Packaging and Label Design Practice Test

Packaging and Label Design Practice Test

Packaging and Label Design Packaging Materials and Substrates