How do they get sauce into those small sachets?

all done by machines

Someone sits and pours a specific quantity from a ketchup bottle into a very small measuring jug and then pours it into the open sachet. They then heat seal the top using a hairdrier...

Actually, I would think it's all done by machine and probably in another country. Like everything else these days.

it's all done by machines.

people are hired just to make sure the machines work properly. they just pour ingredients into the machine, and the machine mixes it all up and squirts out the sauce through nozzles. the little satchets are cut by machines and three sides of it are pre-sealed. after they are filled with sauce, another machine seals them. the hired people then pack them and make sure they're sent out.

Machines.

They grow like that on a tomato sachet plant.

If you're curious about things like that you should watch the learning channel. There's a show on that channel called How's It Made. They show how they do all kinds of things like that.

I'll bet they seal one end completely.. leaving whatever little packet that the sauce will go into.. then fill it almost to the rim... & then seal it seal it air-tight !?! "R"r`r,r'.6 28 07

Midgets do it with tiny little sauce bottles.

a machine blows air in it

uh its called a machine

they probably have a special machine which fills them up