The origin of the sleeping bag
Border bag is a protective “bag” for people to sleep. Its prototype is a blanket that can be closed by zipper or similar. Its function is to replace it when people can’t carry a complete bed. Its original purpose was to keep warm and insulated. At the same time, it also has the characteristics of preventing wind, water and snow and avoiding exposure to some extent. Most sleeping bags on the market are marked by comfortable temperature and limit temperature. Comfortable temperature is a series of temperatures in users’ sleep all night, with the highest and lowest. The maximum comfortable temperature refers to the heat in the sleeping bag, but not the heat of a lot of sweat. It is generally defined as the zipper of the sleeping bag is opened, the arm is placed outside, the head of the sleeping bag is not tightened, etc.
A brief history
History Introduction: sleeping bag has only a short history of more than 100 years. It is a derivative of our cold proof quilt in a specific environment. The earliest recorded down sleeping bag was used by the Alfred mummery expedition team in the UK in 1892. It was developed from the sleeping bag prototype of the alpine mountaineering club and made by the British furniture company, but it was not a real commercial sleeping bag. In 1890, Norwegian ajungilak company began commercial production of sleeping bags. During this period, sleeping bags were filled with kapok. Until the 1920s, sleeping bags were special products, but due to the growing demand market for outdoor products, more companies began to design and produce sleeping bags. Based on the rise of Himalayan exploration and mountaineering, the design and production of sleeping bags began to be continuously developed and improved in the 1930s. At this time, mummy sleeping bags that can tightly wrap the body were born. British mountaineers also successfully climbed Mount Everest with this sleeping bag. After the industrial revolution, due to the development of manufacturing and chemical industry, synthetic fibers began to be produced in large quantities. Because synthetic fibers have excellent thermal insulation properties, they also began to be widely used in the production of sleeping bags. In addition to feathers and down.
The filler of early sleeping bags also had the hair of various animals, such as Reindeer’s hair, while the modern outdoor down sleeping bags did not appear until decades later. The earliest sleeping bags have been difficult to find pictures. Post a picture on the Internet .
Post time: Aug-28-2021