Food Packaging

What is the trade name of polyvinylidene chloride (PVDC) or copolymers of PVDC and polyvinyl chloride?

Saran

Polyvinylidene chloride was the original name for this product that was created in 1942.

Saran wrap

What is the primary failure mechanism of retort pouch seals under thermal processing?

Seal creep or delamination.

A can seam defect called "cut over" is also known as what?

Sharp seam (a sharp fin of the cover formed over the top of the seaming chuck flange during the seaming operation), "Vee", "Spur", or a "Pin Lip"

Name two types of controlled atmosphere packaging.

Shrink wrapping Modified Atmosphere Packaging (MAP) Vacuum Packaging Gas Flushing Packaging Active Packaging (e.g., oxygen scavengers, moisture control) Controlled Humidity Packaging Barrier Packaging (films that control gas exchange) Freshness Packaging (using antimicrobial or ethylene absorbers)

What type of glass container can withstand a higher temperature drop, a large container or a small container?

Small container

In glass containers, which type is more likely to break, one with a large radius of curvature or one with a small radius of curvature?

Small radius of curvature

In food packaging, highly sized SBS paperboards are often called 'food board'; what does SBS stand for?

Solid Bleached Sulfate

What is the term for movement of a flavor compound out of the food product and into the package?

Sorption (or scalping or leaching)

What phenomenon describes the absorption of low-molecular-weight compounds into polymer packaging materials?

Sorption.

With respect to glass bottles, what is a 'spike'?

Spikes are glass projections inside the bottles

What is the major component of the tin can?

Steel

Why do we use steel instead of aluminum can in high temperature processing?

Steel can is more consistent

What name is given to several different types of packaging that provide absolute protection for the product against post processing contamination by microorganisms?

Sterile packaging/ aseptic packaging. Do not accept hermetic packaging, because of the key words: post processing contamination by microorganisms

What stimulant solution is used in place of fat to establish extraction limits for food films?

Stimulant D2 (vegetable oil with a specified fatty acid distribution)

Kraft paper is commonly used as butcher wrap. What does the German word Kraft mean?

Strong

PET is an acronym for a common packaging material for food. It stands for polyethylene terephthalate. Spell terephthalate.

T-E-R-E-P-H-T-H-A-L-A-T-E

What is the trade name for polytetrafluoroethylene?

Teflon

Name the three tests for packaging materials.

Tensile strength, moisture transmission, Oxygen transmission

In plastic polymer packaging, what does the term "thermoplastic" refer to?

The ability of the plastic polymer to be melted repeatedly without any physical or chemical change.