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- Cardboard consists of two different types of paper: smooth paper, called liner; and crinkly paper, called fluting. Cardboard is made up
by putting three layers together – a liner on the top, a liner on the bottom and the crinkly fluting in the middle, which makes it strong.
- Some recycled cardboard is so strong that you can use it to make things that might have otherwise been made from wood or metal,
like furniture, large containers – even dog kennels!
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