Paper and Card Flashcards
List examples of different card and paper materials.
- Cartridge paper
- Cardboard
- Duplex board
- Solid white board
- Corrugated cardboard
- Foil-lined card
- Tracing paper
Explain how the properties of foil-lined board allow it to be used to store take away meals.
The card has an aluminium foil lining; the aluminium is an insulator that retains the heat and therefore keeps the food warm.
Explain the properties of corrugated cardboard.
It is stronger than ordinary card because it is composed of a top and bottom layer that is supported by a triangulated section.
This triangulated section is very good at absorbing forces, making the card much stronger.
Describe potential uses of solid white board.
Solid white board is made from quality bleached wood pulp, making it quite an expensive material. As a result, it is often used for more expensive hardback books.
Describe the potential uses of duplex board.
It is often used for containers, especially ones that contain liquids such as milk cartons. This is because the duplex board can have a waterproof liner that prevents the liquid from leaking out.
Why aren’t recycled materials used in the manufacturing of duplex board?
Duplex board is used mostly for food products, therefore it can’t be made out of recycled materials that might contaminate the food.
Describe the three main stages in the manufacturing of paper.
- Tree is cut down and chunk is fed into chipping machine where it is cut into very small pieces.
- The wood chips are boiled in water to form a thick wood pulp.
- Chemicals are added and the pulp is poured over a fine mesh - the water escapes, leaving only the cellulose fibres behind. This forms the paper.
Describe how papers can be converted into different card-based materials.
Card is made by stacking multiple layers of pulp together, increasing the thickness of the original paper.
To make card even thicker, layers of card can be glued together in a process called laminating.
Name two softwoods and their potential uses.
Scots Pine - commonly used wood for furniture and commonly used in construction industry.
Yew - it’s an oily wood that resists natural degradation, so is used for outside furniture such as chairs and gates.
Name two hardwoods and their potential uses.
European Oak - high quality wood that is used in expensive furniture, cabinet making and boat building.
Balsa Wood - fast-growing material, very soft and easy to work with. As a result, commonly used in model making.
What is a softwood?
Softwoods are from trees that have needles/exposed seeds, rather than leaves.
What is a hardwood?
Hardwoods come from broad-leaf trees that lose their leaves seasonally in winter.
What is a manufactured board?
They are manmade materials that have been produced in factories and mills. They are usually made of mix of natural woods and resin.
Name two manufactured boards and their potential uses.
Plywood - used in construction industry for walls, roofs and floors.
Chipboard - a cheap material suited for use in cheap furniture.
Describe two methods of finishing wood.
- Wood stains can be used to improve the colour of he wood and can help emphasis the individual grains.
- Wood can be protected using oils that prevent natural weathering from degrading the material.
