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Paper, Card & Board

Paper, Card & Board. Production. Objectives. Learn how papers and boards are made Understand why there are so many different types Know the units that paper and card are measured in. Paper Production. Quality?. The main qualities that can be measured in paper are: Cost Finish Strength

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Paper, Card & Board

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  1. Paper, Card & Board Production

  2. Objectives • Learn how papers and boards are made • Understand why there are so many different types • Know the units that paper and card are measured in

  3. Paper Production

  4. Quality? • The main qualities that can be measured in paper are: • Cost • Finish • Strength • Brightness (whiteness) • thickness

  5. Manufacture • There are three main ways to alter the working characteristics of paper and card: • Addition of a coating to the surface such as China clay or chalk – sprayed on surface for a smoother finish • Addition of sizing agent – improves ability of paper or card to accept ink by sealing the absorbency. The coating and sizing affect the whiteness of the paper or card • Laminating – layers of board can stuck together with different characteristics to produce different card

  6. Weight and thickness • Paper is sold by weight in grams per square metre (GSM). When paper is 220gsm or above it is regarded as being board. • Board is measured in thickness in units called microns (µm). There are 1000 microns in 1mm so a birthday card is around 300 microns (0.3mm)

  7. Tasks • Identify 5 processes and label using the first slide of this slide show

  8. Tasks Continued… • Describe the three ways in which the properties of paper and board can be changed during manufacture • What does gsm stand for and what is it used to measure? • At what weight is paper considered to be card? • What thickness is a typical birthday card?

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