Tent fabric and military tent knowledge sharing

When nylon did not appear decades ago, almost all tent materials were canvas or rubber rain cloth that had been waterproofed. Although it could meet the requirements of weatherproofing and was strong enough, it was very heavy and inconvenient to carry. . The tents are generally marked with the material of the outer tent, the bottom of the tent and even the inner tent. You can see various signs such as 190T, 210D, Oxford cloth, PE bottom, PU and so on. First explain the terms: D, denier, expresses the weight of the thread per unit length. For example, the bottom fabric of many backpacks is made of DuPont's 1000D nylon, which has a very high density and is very wear-resistant. Then, in other backpacks For parts that are not easy to wear, the material can be 600D or 420D nylon, and their relative density will be smaller. The larger the number before D, the heavier the fabric of the same area. Usually tents use 150D or 70D nylon, taking into account cost/weight/wear resistance, but on some superlight tents, such as MHW's Annapurna, 30D and 40D fabrics are used to reduce weight to a large extent, at the cost of a large cost. rise and decrease in relative wear resistance. T, generally refers to polyester taffeta (polyestertaffeta), is a kind of nylon, silk-like fabric, generally used as the outer and inner tents of tents, light and strong, such as 190T, you can simply think that the larger the number in front of T, Then the same area of ​​fabric will be heavier. For the external account, considering its fragility in harsh environments, attention should be paid to whether it adopts a ripstop structure. In short, it is woven into a small square shape. Even if it is damaged at one point, it will not be pulled more and more in strong winds. bigger. Oxford cloth (oxford) is a kind of cotton-like fabric, which is soft, smooth and wear-resistant. It is usually used as the bottom of the account, so the bottom of the account is usually marked as XXXDnylonoxford. PE refers to polyethylene or ethylene, which is waterproof and does not need to be glued, so it is used as the bottom of many low-cost tents. PU refers to polyurethane (polyurethane) or spandex, which is usually used as the expression of waterproof pressure glue. Whether it is polyester taffeta or Oxford cloth itself, it is not waterproof. After pressure glue treatment, the number indicates the value of water pressure resistance. The inner tent usually has two functions, heat preservation, moisture permeability and mosquito repellency. For the previous consideration, it usually also uses polyester taffeta, which has good air permeability and has some heat preservation capabilities. If only mosquito repellency is required , then the mesh (mesh) is enough to deal with. If it is a four-season tent or an alpine tent, there is no doubt that all the inner tents are composed of polyester taffeta to keep warm. If it is a tent or a single tent in summer, almost all of them are gauze for heat dissipation and ventilation. For three-season tents, it is a pragmatic choice to have gauze and polyester taffeta. Some tents can adjust the area of ​​polyester taffeta by themselves through zipping, so it is a general 3-4 season tent. Therefore, just by looking at the inner tent, you can basically judge the type and purpose of this tent. Therefore, the current tents are basically made of light and strong nylon materials. Military tent knowledge: 1. Carefully read the installation instructions before installing, so as not to affect the use effect due to improper installation; 2. Avoid avoiding sharp objects from scratching the tent and affecting the use effect; 3. After the tent is used, all spare parts should be collected. 4. When stacking, the load on each bracket shall not exceed 200KG; 5. During the handling process, it should be handled as lightly as possible, and the outer packaging should be prevented from being damaged, so as to avoid loss of accessories; 6. If electrical appliances are used in the tent, Please pay attention to the good insulation between the wire and the iron bracket, otherwise there will be a danger of electric shock; 7. Before setting up the tent, carefully survey the terrain, and there should be no rolling stones, logs and weathered rocks above the camp; Set up tents on the riverbed; 9. In order to prevent lightning strikes, do not build the tent on the top of the mountain or in the open field; 10. When installing on mud or sand, you can dig a drainage ditch around the tent to ensure the ground inside the tent. Dry; 11. The materials used in the tent are not flame retardant. If you need to cook in the tent, be sure to keep the flame away from the tarpaulin or isolate the flame with a fireproof board. When cooking, people should not leave the tent. Make a plan for fire extinguishing and install an exhaust fan. Exclude oil fumes; 12. When the local wind force exceeds level 8 or above, please remove the tent in advance; 13. Before storing the cotton tent, be sure to dry the tarpaulin, and then fold and store it after it is dry. If it is too late to dry the tarpaulin, remember not to 14. Depending on the local humidity and climate, dry the tarpaulin regularly to avoid the breeding of bacteria and damage to the tent's rain-proof coating.
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