2.4.1
Paper & Board
Sources & Origins
Sources & Origins
The origin and sources of paper help us to understand the full journey of paper from many perspectives including designers, manufacturers, and consumers.
Pulp mixture
Pulp mixture
- Papers and board are made from a pulp mixture. This is often a combination of cellulose fibres and a large amount of water.
- The cellulose fibres come from a wide range of different woods.
- These woods are bamboo, sugar cane, hemp, flax and straw.
- A combination of softwoods and hardwoods are best. Generally, fast-growing softwoods are used as it is more sustainable.
Pulp
Pulp
- The pulp is made from debarked logs, these are then converted into fine chips.
- A chemical solution is added which contains cellulose.
- This is then cooked in many large tanks under high pressure.
- This fibrous liquid is then coloured or bleached depending on the application and end product.
Sizing
Sizing
- In order to get the required finish, the liquid is then beaten with other chemicals or additives. This is called sizing.
- The process of sizing stops paper from being as absorbent which allows the paper to be used for printing, photocopying and painting.
Sizing cont.
Sizing cont.
- Sizing allows for ink not to be absorbed and allows for it to be dried on the surface, this is cost effective and allows for accurate printing and painting.
- In some cases you will want very little sizing. This is important for products like toilet tissue or a kitchen paper towel as they are required to absorb liquids.
Converting pulp into a paper
Converting pulp into a paper
- When converting the pulp to paper it is important to use mass production. Mass production is the production of thousands of products in a factory.
- Water is drained away using mesh conveyor belts.
- The paper will be stretched and squeezed of any excess water.
- The paper is then passed through the drying rollers and then the final Calendar rollers.
Finishes
Finishes
- These rollers give the desired finish, often if you need a matt or satin finish this can be applied by the final rollers.
- A finish is applied to a material as its final coat or procedure to enhance the properties in mainly aesthetic or a functional way.
- An example of a paper with a finish is bleed-proof paper. This has a hard finish which resists the ink from spreading, this is useful for product/graphic designers using graphic marker pens.
1Core Technical Principles
1.1New & Emerging Technologies
1.2Energy Generation & Storage
1.3Developments in New Materials
1.4Systems Approach to Designing
1.5Mechanical Devices
1.6Materials Categories
2Paper & Board: Specialist Technical Principles
2.1Selection of Materials
2.2Paper & Board: Forces & Stresses
2.3Paper & Board: Ecological & Social Footprint
2.4Paper & Board: Sources & Origins
2.5Paper & Board: Using Materials
2.6Paper & Board: Stock Forms, Types & Sizes
2.7Paper & Board: Scales of Production
2.8Paper & Board: Specialist Techniques & Processes
2.9Paper & Board: Surface Treatments & Finishes
3Timber: Specialist Technical Principles
3.1Timber: Selection of Materials
3.2Timber: Forces & Stresses
3.3Timber: Ecological & Social Footprint
3.4Timber: Sources & Origins
3.5Timber: Using Materials
3.6Timber: Stock Forms, Types & Sizes
3.7Timber: Scales of Production
3.8Timber: Specialist Techniques & Processes
3.9Timber: Surface Treatments & Finishes
4Metal: Specialist Technical Principles
4.1Metals: Selection of Materials
4.2Metals: Forces & Stresses
4.3Metals: Ecological & Social Footprint
4.4Metals: Sources & Origins
4.5Metals: Alloy-Based Materials
4.6Metals: Using Materials
4.7Metals: Scales of Production
4.8Metals: Specialist Techniques & Processes
4.9Metals: Quality Control
4.10Metals: Surface Treatments & Finishes
5Polymers: Specialist Technical Principles
5.1Polymers
5.2Polymer Categories
5.3Polymer Forms
5.4Polymer Production, Techniques & Quality Control
6Textiles: Specialist Technical Principles
6.1Textile Materials
6.2Selection of Materials
6.3Forces & Stresses
7Designing & Making Principles
7.1Investigation & Data
7.2Environmental, Social & Economic Challenges
7.3The Work of Others
7.4Design Strategies
7.5Communication of Design Ideas
7.6Prototype Development
7.7Selection of Materials
7.8Tolerances
7.9Material Management
7.10Specialist Equipment
7.11Specialist Techniques & Processes
Jump to other topics
1Core Technical Principles
1.1New & Emerging Technologies
1.2Energy Generation & Storage
1.3Developments in New Materials
1.4Systems Approach to Designing
1.5Mechanical Devices
1.6Materials Categories
2Paper & Board: Specialist Technical Principles
2.1Selection of Materials
2.2Paper & Board: Forces & Stresses
2.3Paper & Board: Ecological & Social Footprint
2.4Paper & Board: Sources & Origins
2.5Paper & Board: Using Materials
2.6Paper & Board: Stock Forms, Types & Sizes
2.7Paper & Board: Scales of Production
2.8Paper & Board: Specialist Techniques & Processes
2.9Paper & Board: Surface Treatments & Finishes
3Timber: Specialist Technical Principles
3.1Timber: Selection of Materials
3.2Timber: Forces & Stresses
3.3Timber: Ecological & Social Footprint
3.4Timber: Sources & Origins
3.5Timber: Using Materials
3.6Timber: Stock Forms, Types & Sizes
3.7Timber: Scales of Production
3.8Timber: Specialist Techniques & Processes
3.9Timber: Surface Treatments & Finishes
4Metal: Specialist Technical Principles
4.1Metals: Selection of Materials
4.2Metals: Forces & Stresses
4.3Metals: Ecological & Social Footprint
4.4Metals: Sources & Origins
4.5Metals: Alloy-Based Materials
4.6Metals: Using Materials
4.7Metals: Scales of Production
4.8Metals: Specialist Techniques & Processes
4.9Metals: Quality Control
4.10Metals: Surface Treatments & Finishes
5Polymers: Specialist Technical Principles
5.1Polymers
5.2Polymer Categories
5.3Polymer Forms
5.4Polymer Production, Techniques & Quality Control
6Textiles: Specialist Technical Principles
6.1Textile Materials
6.2Selection of Materials
6.3Forces & Stresses
7Designing & Making Principles
7.1Investigation & Data
7.2Environmental, Social & Economic Challenges
7.3The Work of Others
7.4Design Strategies
7.5Communication of Design Ideas
7.6Prototype Development
7.7Selection of Materials
7.8Tolerances
7.9Material Management
7.10Specialist Equipment
7.11Specialist Techniques & Processes
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