Guest
asked 4 years ago
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Even in the 21st Century most glues are made using at least some animal products. This is because glue is essentially a gelatine. Gelatine is a binding substance which is derived from protein. The protein is obtained from animal skins, bones and hides which are boiled (usually over a very long period of time) the resulting mixture is then amalgamated with various solvents and water to provide glue.
Over recent years, scientific technology has enabled animal free glue to be made, but this is not available on a widespread basis and is still quite rare. Some vegetarians object to glue because it uses animal by-products (the animals are not killed specifically to make glue, but strict vegetarians avoid any dead animal products). However, it is difficult to avoid glue which contains animal products. Nearly all books are still bound with glue which contains gelatine and so has come from animals.
Over recent years, scientific technology has enabled animal free glue to be made, but this is not available on a widespread basis and is still quite rare. Some vegetarians object to glue because it uses animal by-products (the animals are not killed specifically to make glue, but strict vegetarians avoid any dead animal products). However, it is difficult to avoid glue which contains animal products. Nearly all books are still bound with glue which contains gelatine and so has come from animals.
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Guest
answered 3 years ago
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