PAPER & CARD

PAPER & CARD

1. HOW IS IT MADE

   • Step 1: A tree is cut down and the trunk is fed into a chipping machine where it is cut into very small pieces
   • Step 2:The small pieces or wood chips are then boiled to form a thick wood pulp
   • Step 3: Chemicals such as starch and are added. The pulp is poured over a filter and the water escapes leaving the CELLULOSE fibres behind. This forms the paper.
     • Define "CELLULOSE" Cellulose is a long chain of linked sugar molecules that gives wood its remarkable strength. It is the main component of plant cell walls, and the basic building block for many textiles and for paper.

2. TYPES OF CARD

   • CARDBOARD
     • Ranges from about 300 microns to 650 MICRONS
       • define"MICRON"a unit of length equal to one millionth of a metre
   • DUPLEX BOARD
     • large foam-based board
     • used for food packaging, eg take-away pizza boxes
   • CORRUGATED CARD
     • strong and lightweight
     • available in different thicknesses
     • define "CORRUGATED"material or surface shaped into a series of parallel ridges and grooves
   • SOLID WHITE BOARD
     • good for printing onto
     • used for hard backed books

3. TYPES OF PAPER

   • LAYOUT PAPER
     • lightweight, thin, white
     • low cost
   • TRACING PAPER
     • extremely thin, TRANSLUCENT
       • define "TRANSLUCENT" material that allows light, but not detailed shapes, to pass through so semi-transparent.
     • high cost
   • CARTRIDGE PAPER
     • general purpose work
     • medium cost