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Product Design > Polymers > Flashcards

Polymers Flashcards

0
Q

Main advantages of thermoplastics in commercial packaging:

A

-Lightweight and versatile -strong, tough, rigid, durable, and impact and water resistant -easily formed and moulded -easily printed on -inexpensive -recyclable

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1
Q

Thermoplastics once heated ….?

A

Can be formed into a variety of interesting shapes using different forming techniques such as blow moulding

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2
Q

PET stands for?

A

Polyethylene terephthalate

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3
Q

HDPE stands for?

A

High density polyethylene

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4
Q

PVC stands for?

A

Polyvinyl chloride

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5
Q

LDPE stands for?

A

Low density polyethylene

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6
Q

PP stands for?

A

Polypropylene

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7
Q

PS stands for?

A

Polystyrene

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8
Q

PET properties

A

Excellent barrier against atmospheric gases - prevents gas from escaping packaging - doesn’t flavour contents - sparkling ‘crystal clear’ appearance - very tough - lightweight, low density

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9
Q

HDPE properties

A

Highly resistant to chemicals - good barrier to water - tough and hard wearing - decorative when coloured - light weight and floats on Water - rigid

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10
Q

PVC properties

A

Weather resistant (doesn’t rot) - chemical resistant (doesn’t corrode) - protects products from moisture and gases while holding-in preserving gases. - strong, good abrasive resistance and tough - can be manufactured either rigid or flexible

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11
Q

LDPE properties

A

-good resistance to chemicals -good barrier to water, but not gases - tough and hard wearing - decorative when coloured - very light and floats on water - very flexible

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12
Q

PP properties

A

-lightweight -rigid -excellent chemical resistance -versatile, can be stiffer than polyethylene or very flexible -low moisture absorption -good impact resistance

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13
Q

Two types of polystyrene

A

Rigid and expanded

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14
Q

Rigid polystyrene properties

A

-transparent -rigid -lightweight -low wager absorption

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15
Q

Expanded polystyrene properties

A

-excellent impact resistance -very food head insulation -durable -lightweight -low water absorption

16
Q

PET applications

A

Carbonated (fizzy drinks) bottles. Packaging for highly flavoured food. Microwaveable food trays.

17
Q

HDPE applications

A

Unbreakable bottles (for washing up liquids,detergents,cosmetics,toiletries etc.) vey think packaging sheets.

18
Q

PVC applications

A

Packaging for toiletries, pharmaceutical products, food and confectionery, water and fruit juices.

19
Q

LDPE applications

A

Stretch wrapping (cling film), milk carton coatings.

20
Q

PP applications

A

Food packaging - yoghurt and margarine pots, sweet and snack wrappers, uses for laminating paper and board

21
Q

PS applications

A

Rigid: food packaging eg. Yoghurt pots, cd jewel cases, audio cassette cases. Expanded: egg cartons, fruit, vegetable and meat trays, cups etc. packing for electrical and fragile products

Product Design (14 decks)

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