There are many types of tents based on the needs of use, such as camping, mountain, beach, fishing, hunting, disaster relief, jungle, military, etc. Here I mainly talk about the materials and design of camping and climbing tents.
Camping, hiking accounts generally use lightweight polyester, nylon fabrics, so that it will be portable, and can increase the fabric's warp and weft density, foreign high-end tents using 210T to 300T (distance and weft density), high density waterproof It will also be relatively high, but too high a density requires fineness, so that the strength will decrease.
There are many types of coating on the outside, camping, climbing tents generally use PU, PE and silver coating, PU is the most ideal. The external account waterproof index is generally 800~2500mmH2O. Too high will affect the breathability of tents, and foreign high-end tents are rarely above 2500. And the waterproof index of the tent is only a dynamic waterproof index, not a hydrostatic pressure indicator. The 2500mmH2O is just the instantaneous water pressure down from the rain. If 2500 water column is used, it must be leaking. Most of the tents that I used used most of the tents are soaked in the rain for a long time. At this time, the design of the double-deck tents reflects their advantages. The gathered beads on the inside of the outside of the tent will slide down to the ground (if the accounts are waterproof In case of poor sex and heavy rain, water droplets on the inside of the account will drop directly onto the inner account.) According to these characteristics, camping and climbing tents are recommended not to be single-layered, and the water droplets of a single-layer tent will slide into the tent.
Camping, hiking accounts generally use light polyester, nylon, polyester-cotton breathable fabrics. The advantage of polyester/cotton is good hygroscopicity. The disadvantage is that it is easy to mold. The advantages of polyester and nylon are easy to care for. Some internal accounts are large-area mesh fabrics. The advantage is good ventilation. The disadvantage is that the light is too light. In summer, only the internal accounts are used. The outside can clearly see inside and sleep easily.
Camping, hiking tents with PE, ordinary nylon, Oxford cloth. Low grade PE bottom, PE is not wearable, easy to aging and brittle. Tear-proof nylon bottom is used in high mountain tents, light advantages, poor wear resistance, easy to break. The Oxford cloth is the most mature, and Oxford cloth is the nominal index D of wire, 210D is thicker than 150D, and wear resistance is relatively better, but the weight is also relatively higher. The higher the waterproof index of the bottom material, the better, generally 2000~50000mmH2O.
The tents for camping and climbing tents are generally made of glass fiber and aluminum. The advantage of glass fiber ray is cheap, disadvantages are easy to aging, brittle, broken, and heavy. The advantages of aluminum crucibles are lightness and strength, and the disadvantages are expensive. The material of aluminum crucibles is 7075T9 or 7001T6. The early aluminum crucibles were produced only in South Korea, the United States, and Germany. The best quality in Germany and the most cost-effective in South Korea make most aluminum crucible aluminum crucibles come from South Korea. In the past few years, the domestic aluminum crucibles were imported from South Korea, and they came in after being coded. Afterwards, in order to save costs, the company imported stainless steel tubes from its own country and cut its own assembly sets, also known as Korean aluminum crucibles. Recently, I heard that a former military-industry enterprise that is a missile shell in China can also do aluminum tubes, but the raw materials are also from South Korea. The genuine Korean original set of aluminum foils are printed with EASTON 7075.
Many friends think that camping and climbing tents must be tight, regardless of their internal accounts or foreign accounts. In fact, it should be that the external accounts are tied tight by the rubber ropes that are nailed to the ground. The internal accounts of the account holders must be slightly looser. This design is under strong winds. There is a certain amount of stretching space. Everyone can take a look at the wind tunnel test of the MSR tent.
Camping, climbing tent use matters needing attention:
1. When setting up tents, the external accounts must be straightened to avoid contact with the internal accounts. The water inside the waterproof ledger penetrates into the internal accounts;
2, the tent should not be exposed to high temperatures, the bottom cloth not on the high-temperature sand and the ground, so as to prevent PU aging, to avoid the decline in waterproof performance;
3, when you receive the tent, you must slowly reel the air in the tent. If the air is rolled up without the exit, the air can only break through the waterproof layer. This will greatly affect the waterproof performance.
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