You've not quite got the last phrase right; "und kann nur an dieser entzündet werden." translates to "and can be ignited only at this.".
As for your medal, I'm not sure. It's most likely German/Swiss in origin and presumably part of a series of medals. Since this medal is in German but commemorating a Swedish invention, it doesn't seem to be a nationalistic medal series like "Great inventions of Germany". Perhaps something more like "Great inventions of the Industrial Revolution", or perhaps even a medal from a match company commemorating the advances in match-making.
A closeup of the little shield device at the top of the reverse and/or the little "mintmark" at the bottom might tell us where it was made. The "mintmark" almost looks like the Franklin Mint "FM monogram", though I've never heard of the FM making German-language medals.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis