Vie Sauvage et Survie

Catégorie Générale => Feu de camp => Discussion démarrée par: raphael le 02 octobre 2015 à 12:56:05

Titre: how therm a-rest-sleeping-pads are made
Posté par: raphael le 02 octobre 2015 à 12:56:05

http://indefinitelywild.gizmodo.com/how-therm-a-rest-sleeping-pads-are-made-1703679138 (http://indefinitelywild.gizmodo.com/how-therm-a-rest-sleeping-pads-are-made-1703679138)

In the early 1970s, two Boeing engineers used a sandwich press to put a slice of foam between two pieces of airtight fabric and invented the self-inflating sleeping pad for campers. Therm-A-Rest still uses that basic principle today, just the sandwich machine has given way to an entire factory in Seattle. This is that production process today.