The nearest weather is like a mountain trolley, suddenly cooling.
Many regions are “one second into winter”, how many small partners have silently take a thick winter clothes?
Speaking of the cold, down jacket is an indispensable winter clothes.
So, there is no down jacket in ancient ancient times? What is the feathers of duck or goose? The thicker the down jacket, the more warm? The following will be revealed.
Is there a “down jacket” in ancient times?
Bird’s feathers and silk, cotton, burlap, animali, wool, keep warm effect.
There are many branches of feathers, more fluffy than other fibers. The interior is hollow, so it can contain more air, and the air is the best insulation material.
The so-called down is a mixture of “feather” and “velvet”. Feather is a hard part of the feathers, supporting in the down, which can make the down flexible; the velvet is a velvet, similar to the head on dandelion, you can keep the down fluffy warm. And the big and hard feathers can make badminton, can’t put it in the down jacket.
My ancients know that bird feathers are warm, there is a simple hotel – “Chicken Shipping”, no bedding, tapping chicken hair to keep warm.
In 889, the Tang Dynasty Liu Wei was in Guangzhou Sima. He is a people in Hebei. It seems that many things in the local area feel rare, and write the “Ling Table”, which said: “The Southern Emirates The fine hair, the clip is used as a cloth, and the pseudo is, and it is gentle, and the gentleness is not in the jealous. Customer Yun, the goose is soft and cold, and the shredded baby is also a feuds. “In short, It is a warm and soft, and the child covers sleep.
Who invented a down jacket?
In 1920, the Americans I opened a small store in Seattle, and the store name used his own name. In 1935, he almost frozen during a winter fishing. He thought that there was a uncle to go to Russia, and the soldiers there would warm the duvet, goose rock in the clothes, so in 1936, he designed the world’s first one. Down jacket – skyline (Skyliner) and applied for a patent after 4 years.
Because this dress is more ugly, only the military, outdoor sports enthusiasts and long-term talents will buy, plus the down jacket at the time is very easy to lose, and there is a duck oil taste, down jacket is also become “” Tool service.
It is worth mentioning that Edid Bauer depends on Everest in 1963, proved the warmth of the down jacket, and this brand still exists.
The modern high-quality down jacket has been more late, the production of coated fabrics in the 1970s, allowing fabric fibers to stick together, solve the problem of dropping.
Until the 1980s, China has only started the fashionable down jacket, because the fabric grade and processing levels are not high, the appearance is bloated, so it is also known as “bread service.” However, because most of the down jackets at the time were imported, wearing a down jacket is a symbol of identity.
Why do you want to choose a duck and goose’s feathers?
There is a layer of grease on the feather of the waterfow, it is very easy to dry after washing. Chicken is as a land animal, the chicken is better than duck, and the goose is hard, and it is not easy to dry. The coldness is completely unable to be more than the duck hair, and the chicken body is relatively small, so it is more suitable for the chicken duster. Only very inferior down jackets will use chicken hair.
The current down jacket generally uses goosevell, or the treated ducklings, because the duck is an eaten animal, and there will be a sweet taste in the velvet, and the goose is a herbivore. There is no odor in the velvet.
In essence, the warmth of the ducklings and goosevets is not different.
Birds can be divided into early becomes birds and evening birds according to the growth rate of the chick. Chicken, duck, goose are early to make a bird, and will be able to walk after birth. It will follow the birds to come to their own food. This is an adaptation of the survival rate, and the eagle, swallow, sparrow and other chicks, hatch After coming out, there is no or only a few velvet feathers, you need to raise the birds, these are late into the birds, can’t be raised by humanity.
Ducks and geese are members of the geese, most of the ducks are generated by the green head duck and the mouth of the duck, and the individual appearance is special, such as the duck, it is the mute duck. . China’s goose is domesticated by Hongyan, and Europe’s goose is gray gorge, all are geese. Guangdong’s liongoffs is the world’s largest goose variety. In addition, the relationship between swans and goose is relatively far, people are swan, so it can’t say it is the biggest goose.
Because ducks and goose can be raised on a large scale, it is most convenient to make down jackets.
The thicker the down jacket is warm?
of course not!
The heat loss is very simple, there is guidance, convection and radiation, while the down jacket will lock the air, let the air are isolated, the dumps between the down jacket are not convenient to convect, so avoid the coldness of the cold and penetrate The loss of body temperature.
So, the down jacket is not the thick and better, you can’t just look at the thickness.
Experts: Zhu Guangsi, Popular Writers, Beijing Science Association