What Kind Of Down Is Better?

　　 Down It is also divided into duck down and goose down. Under the same conditions, the warmth of goose down is slightly higher than that of duck's down. There are mainly 3 performance indicators for feather down: first indicators are filling weight, such as 400 grams of goose down sleeping bags and 1100 grams of eiderdown sleeping bags. This weight does not mean the weight of sleeping bags, but refers to the net weight of filling down; the second index is the amount of cashmere, the feather is made of feather and velvet, and the feather has supporting function, and warmth mainly comes from fine wool. The percentage of cashmere is expressed in percentage, for example, the 80 velvet indicates that the weight of the 100 weight unit is 80 units. Generally, the highest cashmere content of duck down is 85 to 90, and the cashmere content can reach 90 to 95. The third index is the expansion of velvet, and the Fill power refers to the number of cubic inches of an ounce of down under 68.4 grams of pressure, and the higher the expansion of the down, the better the thermal performance of the pile. In general, the expansion rate of Chinese domestic duck is about 450, and the expansion rate of domestic goose down is from 450 to 600. The import of the Andean mountain goose down in the United States amounts to about 95, and the swelling rate reaches 700 to 800. "

"Certainly it's warm. Goose down is better than duck down. Because the principle of warmth is also known to all, mainly depends on the amount of fixed air, that is, the more fluffy and thicker things are, the warmer they are. Feather down is also the same, because the structure of feather down, the size of down fiber is directly related to the amount of fixed air volume. Generally speaking, the size of goose down fiber is larger than that of eiderdown fiber, and the fixed air volume is larger than that of eiderdown fiber. You can see the limit temperature of 1500G down to -29 degrees on the market. The limit temperature of 1500G goose is at least -40 degrees.

And because the duck is omnivorous, there is a smell of smell in the cashmere. Although it can be eliminated after processing, it is said that the flavor can be reversed after one or two years, but it can also be tolerable. Geese are herbivores, and there is no peculiar smell in their fleece.