Graphics Theory- Paper & Board

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Commercial papers & thin card are available on rolls which are? used in what process?
The continous process
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The continuous process is also known as?
Web Fed
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What is paper weighed in?
Gsm (Grams Per Square Metre)
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What is the thickness of paper and board referred to as?
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At what thickness does paper become board?
220 Microns
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Explain the stages of the paper making process
1/ Trees are cut down 2/ trees are debarked 3/logs are chipped up 4/ wood chips are washed and additives(chemicals) and bleach are added
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paper making continoued
5/ the wire mesh drains the wood pulp and the mesh is placed on a fourdrinier machine which vibrates to forces liquid out 6/ the pulp is squeezed on the rollers 7/ the paper is the wound onto reels so that they can be cut into smaller sheets
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Name some advantages of mechanical pulp
Ground to 1-2 mm which softens lignins--- mainly used for newspapaers--- cheaper to produce--- can be bleached
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Name some disadvantages of mechanical pulp
lower paper strength--- paper can yellow when exposed to light
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Advantages of chemical pulp
Higher paper quality--- waste lignin can be burnt as a fuel or oil substitute, giving energy to national grid
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Disadvantages of chemical pulp
It is not produced in the UK and therefore has to be imported
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Advantages of waste pulp
It makes use of recycled paper--- it is well suited for bulk grades (newspapers etc...)
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Disadvantages of waste pulp
It cannot be indefinately recycled as the pulp loses quality--- and it requires more additives to improve quality.
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Name 5 types of paper
1/ drawing 2/ layout 3/ tracing 4/ copier 5/ cartridge 6/ bond 7/ coated 8/ recycled
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What is mounting board used for?
For displays, can be done flat or in frames and is of high quality
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What is drawing paper used for?
To draw
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What is layout paper used for?
used for sketches as it is translucent ( also tracing but in colour)
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What is tracing paper used for?
Heavier in weight and transparent --- used to trace but not in colour
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What is copier paper used for?
for photocopying as it has a smooth finish and is available in a range of colours
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What is cartridge paper used for?
It is used for sketching and has a textured surface
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What is bond paper used for?
Used for letter heads used in graphic work... strong paper which is durable and is high in quality
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What is coated paper used for?
used for print jobs and have a smooth surface finish (e.g photo paper)
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What is recycled paper used for?
used for low quality prints due to the low quality and rougher texture
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Name the five main types of board
1/ cartonboard 2/ folding boxboard 3/ corrugated board 4/ solid white board 5/ foil lined board
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What is cartonboard used for?
Structural packaging nets as it has excellent print quality and gives great protection and is cheap and can be recyled
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What is Folding boxboard used for?
widely used for food packaging and is excellent for scoring and bending without splitting
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What is corrugated board used for?
protective packaging and it is cheap (it has a liner- fluted centre- liner)
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What is Solid white board used for?
For packaging frozen foods
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What is foil lined board used for?
It is used for cosmetic cartons, prepacked food packages. t has a very strong visual impact and is an excellent barrier against moisture.
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Other cards in this set

Card 2


The continuous process is also known as?


Web Fed

Card 3


What is paper weighed in?


Preview of the front of card 3

Card 4


What is the thickness of paper and board referred to as?


Preview of the front of card 4

Card 5


At what thickness does paper become board?


Preview of the front of card 5
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