Properties of Paper, Card + Board

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Types and Properties of Paper, Card and Boards Ch. 2
HOW are they made?
- From vegetables fibres found in wood
- Fibres are crushed to make a pulp
When considering paper, there are 5 factors to consider
1. Cost
2. Finish
3. Strength
4. Brightness
5. Thickness
You can change the properties of paper in 3 ways
1) Coatings
- Give a smooth finish
- e.g. china clay
2) Sizing Agent
- Improves paper's ink absorbency
- This also affects brightness
3) Laminating
- Different types of boards can be made from this
Paper thickness is measured in GSM ­ grams per square metre
220+ gsm = board
Board thickness is measured in microns
There are 1000 microns in 1 mm
Recycling
Virgin Paper
- 90% of all paper is virgin paper
- Virgin paper is made from 100% wood pulp w/no recycled paper
- It is stronger and whiter + usually used to make food containers because it reduces the
risk of contamination
Rotting of paper waste methane gas
Advantages Disadvantages
- Better for environment - Harmful chemicals are used to make it
- Energy saved ­ less raw material whiter
- Good for company public image+ is - Not as strong as virgin paper
somewhat trendy - More expensive to make than virgin

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Types and Properties of Paper, Card and Boards Ch. 2
- Aluminium foil for insulation/bacterial barrier e.g. Capri-Sun
- Plastic for waterproofing e.g. plastic drinks bottles
- Greaseproof paper for cupcake liners
- Wax coating for waterproofing e.g.…read more

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