What is the gum made of that seals envelopes?

Question

Just wondering what I am l*****g when I seal my envelopes down!

Answer 1

boiled bones  from knackered animals should be safe

Answer 2

Its made from a blend of polyvinyl acetate and dextrin with the exception of aerogrammes, where the gum is a blend of polyvinyl acetate and polyvinyl alcohol.

Interesting fact - Cockroaches are attracted to the "gum"on the envelopes + lay there eggs on it.

Whose knows but...

There was a story in the news about a woman who cut her tongue when l*****g and envelope. After a few days a lump formed on her tongue which kept getting bigger. She went to hospital when it got so big + when the surgeons cut the lump a cockroach came out. A cockroach had laid eggs on the envelope and when she cut her tongue the eggs had got in.

Answer 3

Pigs urine.

Answer 4

dog s***n and sugar.

Answer 5

Fish Glue

Answer 6

The glue applied to envelopes is of two basic types. The glue applied to the flap that is sealed by the consumer is usually a gum. A typical natural gum is gum arabic, derived from a substance produced by the acacia tree. Synthetic gums are often derived from dextrans, which are produced by the fermentation of sugar. The glue that holds the rest of the envelope must be stronger and more permanent. This glue is often derived from starches, which are obtained from corn, wheat, potatoes, rice, and other plants.

lol