Practice Test Geeks(CPE) Certified Packaging Engineer Practice Test
← All CPE Flashcard Decks

Packaging Materials & Components Flashcards

7 cards from real CPE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Packaging Materials & Components flashcards as text

  1. Which test method is commonly used to evaluate the seal strength of flexible packaging heat seals?

    Answer: T-peel or lap shear test

    T-peel and lap shear tests measure the force required to separate heat-sealed flexible film bonds under controlled conditions.

  2. What is the function of a desiccant in pharmaceutical packaging?

    Answer: To absorb moisture to protect moisture-sensitive products

    Desiccants such as silica gel or molecular sieves absorb moisture within the package to protect products sensitive to humidity degradation.

  3. In blow molding of plastic containers, what is 'parison' programming used for?

    Answer: Varying parison wall thickness along its length to control bottle wall distribution

    Parison programming adjusts the die gap during extrusion to create a variable-thickness parison, compensating for uneven stretch during blowing.

  4. Which packaging component is most often used to provide tamper evidence on a plastic bottle closure?

    Answer: Break-away band (pilfer-proof band)

    A break-away band attached to the cap base fractures or separates when the cap is first opened, providing visual tamper evidence.

  5. What characteristic distinguishes biaxially oriented polypropylene (BOPP) from cast polypropylene (CPP) film?

    Answer: BOPP has higher stiffness and better barrier due to orientation in two directions

    Biaxial orientation of BOPP increases crystallinity, stiffness, optical clarity, and barrier properties compared to unoriented cast polypropylene.

  6. What does 'ECT' (Edge Crush Test) measure in corrugated board evaluation?

    Answer: The compressive strength of corrugated board loaded on its edge

    ECT measures the compressive strength when corrugated board is loaded on its edge, which correlates directly to box stacking strength.

  7. In flexible packaging, what is the primary role of a sealant layer in a laminate structure?

    Answer: To enable heat sealing to form the package and protect the seal interface

    The sealant layer, typically PE or CPP, is positioned innermost and melts at seal bars to bond the package shut and contact the food product.