Interpretation of technical parameters and functions of down sleeping bags
In our commonly used down sleeping bags, many technical parameters are marked. These technical parameters are important instructions for indicating the functions of sleeping bags. However, because buyers and users often do not understand the meaning of these technical parameters, they are often generated during purchase and use. Some questions and misunderstandings. Document.write("");ad_dst = ad_dst+1; The necessary knowledge of these technical parameters ensures that we buy a sleeping bag that is truly suitable for use. The main technical parameters of sleeping bags are the following:
1. Temperature scale: The temperature scale indicates the temperature index of the sleeping bag, the temperature mark points the limit temperature and the comfortable temperature, the limit temperature indicates the use of the limit temperature range of the sleeping bag, usually we need to watch the comfort temperature, which means that most people use the sleeping bag when the human body feels Comfortable temperature, but it should be specifically stated that there is no uniform standard for temperature scale, so it can only be used as a reference, for example, the temperature scale of some sleeping bags exported to Europe, America, or Europe and the United States is slightly lower, which may be related to the physical and dietary habits of human species. Westerners are generally more cold-resistant than Chinese, so when buying this type of sleeping bag, make appropriate adjustments in consideration of this factor. Down sleeping bag is the lightest sleeping bag under the same warm nature, and is also the most expensive sleeping bag.
2. The amount of stuffing: that is, the amount of cashmere that is usually said. 400g velvet refers to the weight of down filled with its own character, the higher the value the better, generally speaking, the temperature scale below -20 °C when the required gram weight ≥ 900g. Sleeping bags are filled with duck downs, goose downs, duck feathers, and goose feathers. For example, the amount of down-filling is 70%, which means that 70% of the cashmere is 30% wool. The thermal effect of feather down mainly comes from the fine velvet. Under the same conditions, the degree of warmth of the goose down is slightly higher than that of the duck down. Therefore, the higher the velvet content, the better the thermal performance and the higher the price. The content of wool should not be too high, too high will affect its warmth, but hair is a must, otherwise there is no openness. Due to the poor elasticity of the velvet, the sleeping bag with a high velvet content has a slower speed when the awning is restored after use. Therefore, it does not contain 100% cashmere. Only by filling a certain amount of hair can the entire sleeping bag cover be loose and flexible. The maximum amount of stuffing can generally reach 90%, and very few foreign down sleeping bags are said to be up to 95%.
3. Filling pow: refers to the ability to quickly rebound, with a 500 index or better.
4. GDD indicator: GDD is an abbreviation for English grey duck down. When marked at 70/30, 70% of the gray hairs in the sleeping bag and 30% of the white hair are in the sleeping bag. It is generally believed that the white hair contains a large amount of fats and oils, and the gray hairs contain less fat. For example, ducks produced in Beijing and Jiangxi are mostly white hair, such as Beijing roast duck, and the duck hair produced in Sichuan is mostly gray hair. The superiority of gray hair is that it is not easy to degenerate. Sleeping bags with high gray hairs are not susceptible to deterioration or infestation when they are not used for a long time. In addition, the user may find that when using a sleeping bag with a high GDD content (that is, a sleeping bag with a high grey count), it does not feel hot and feels comfortable. This is because the white hair is more dry and the gray hair is warmer and more peaceful. The higher the GDD, the higher the sleeping bag price.
The same GGD is an abbreviation of English gray goose down.
5. Weight: refers to the weight of the sleeping bag itself. Generally, the more warm the sleeping bag is, the more the weight of the sleeping bag is, and accordingly, the weight is increased accordingly. The weight can be controlled according to the temperature of the destination and its own weight-bearing capacity.
6. Lining materials: Liner materials are usually required to be more than 200T, because if the index of inner lining materials is lower than 200T, individual hairs will wear out. Some good sleeping bags often use good nylon materials (such as British Nylon Pretex P660MA). Ensure that there is no phenomenon of velvet wear out, this material is light and feels soft when skin contact; Sleeping bags External materials: good down more waterproof breathable material, because in some extremely cold places, whenever the early morning get up, the tent The small water droplets formed by the condensation of hot air often splash on the sleeping bag. Therefore, the external materials of the sleeping bag must have a certain degree of waterproofness to ensure the drying of the sleeping bag. As the down sleeping bag is wet, it is not easy to dry, which will lose its thermal performance. Therefore, waterproof breathable materials must be used as the outer fabric.
7. From the inside down structure of the sleeping bag, the latest internationally popular method is to adopt a three-dimensional sub-binary down structure to ensure the down-positionability of the down and easy recovery of its fluffy appearance.
8. The zipper should use a good zipper, such as YKK to ensure durability, and now some high-end sleeping bags have been treated with nylon seams at the zipper pull to prevent the zipper from being caught during use.
9. Appearance: The style of the doll is best in the same weight sleeping bag; the envelope style is loose. 10. Others: The cap should be small. The previous large round placard not only accounts for the weight but also does not keep warm. It also causes the volume to increase. The good down sleeping bag also takes into account the handling of the neck and adds a collar to ensure that the heat is radiated from the neck. Is a major improvement in the function of sleeping bags. Sleeping bag sets usually also require waterproofing, preferably with a certain compression function, which facilitates the compression of the volume and is easy to carry.
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