Properties and uses of paper and card Flashcards
Compared with recycled paper, virgin paper generally is …
stronger and easier to make whiter.
Why is virgin paper generally used for food containers?
It reduces the contamination risk to food products.
What materials can you make paper from?
Wood pulp, corn, straw, cotton and hemp.
What are the advantages of recycling paper?
- It’s kinder to the environment, 34% of trees cut down are for paper manufacturing
- It saves energy as less raw material has to be processed.
- It helps companies to be seen as ‘greener’ and it is an easily understood message for the consumer
What are the disadvantages of recycling paper?
- Chemicals that are harmful to the environment, such as bleach, are sometimes used to achieve white paper
- It is not as strong as virgin paper
- It is more expensive to make than virgin paper
Why is paper sometimes described as ‘virgin paper’?
That means it is made from 100% wood pulp and does not contain any recycled paper.
What is cartonboard used in? Why? How is it adapted for its purpose?
Cartonboard is used in packaging because it has a high quality print surface and is reasonably thick 230-1000 microns. It can be adapted, for example, when it is used in drinks packaging the inside is coated in aluminium foil to keep the drinks cool.
What is a type of board that has a larger variety of uses than cartonboard? How is it made? In what contexts is it used?
Duplex is a larger and more rigid, multi-layered display board which has a variety of uses. It is made using a foam base board to which various finishes are applied. Good examples are the boards used for advertising in shops or cinemas which can be coated with a smart foil material with an image that reacts to light and changes ‘hologrammatic’.
What are the advantages of using cartonboard in packaging?
- It is mechanically strong, so good at protecting products
- It can be easily cut, creased, folded, and glued
- The surface is usually white and smooth and can be printed on using all the main printing processes
- It can be embossed and hot-foil stamped
What is cartonboard? What is it made up of?
Cartonboard is a multilayered or laminated material with three or more layers (plies). It usually has a white surface on one or both surfaces to make it easier to print on.
What are the four types of cartonboard which are manufactured?
Solid Bleached Board (SBB), which has the highest quality white print surface and is used in the packaging for perfume, chocolates and cigarettes.
Solid Unbleached Board (SUB), which is brown and very strong. It is used for drinks packaging.
Folding Boxboard (FBB), which has a white top layer and cream bottom layer and is used in the packaging of toys or games.
White-lined Chipboard (WLC), which is a recycled board with a white top surface used in the packaging for detergent powders.
What are the four main coatings of cartonboard? Why are these coatings used? Give examples.
Aluminium foil - for insulation or as a bacterial barrier for food products. eg. Capri Sun drinks containers
Plastic - for waterproofing. eg. Innocent smoothie drinks cartons
Greaseproof paper - eg. baking cups for cupcakes
Wax coating - for waterproofing. eg, takeaway coffee cups
