The commonly used warm-keeping filling material is down, and the thermal function of the down feather itself has not been replaced by artificial warming material. Its compressibility is very good, but the down down needs to be processed in the later stage. The grease on the surface has been treated and its water resistance is slightly inferior. Therefore, the down products suitable for outdoor sports must take into consideration the waterproof property of the outer layer material.
There is a pile of downy three kinds of cashmere, one has a short stem, and a lot of short hair at the same time, a bit like a tall ear, usually collected from the duck or goose's chest, the real down is this; the other It is a broken piece of wool, which breaks the long feathers of the stems on the wings and tail of the duck or goose. The third type is called the flying silk. It is a process in which the short hairs fall off from the stem during the processing of the two types of cashmere. The sessile short fluff produced by the surface.
In the processing of down products, the down grade is determined by the different amounts of the above three types of down. The higher the level of each type of cashmere, the more fluffiness of the hair piece will be reduced, and the warmth will be worse. Flying silk will feel very good, very soft, but the warmth is poor, and will be agglomeration after over-drying.
As for grey and white velvet, it is no longer necessary to distinguish between the two. In terms of duck down, the southern part is mostly lake duck down, and almost all have black hair.
When selecting down products suitable for outdoor sports, attention should be paid to several indicators such as outer layer, inner layer, selected velvet, internal standard, and fluffiness.
The outer layer is generally made of high-strength, high-density nylon and has a coating (not necessarily waterproof), mainly for leakage velvet. During the processing of the outer skin, the sutures are immersed in silicone oil to prevent the sewing machine from getting too tight on the upper and lower threads and increasing the friction force to enlarge the eye of the needle, thus causing leakage of the velvet. When inspecting the skin, it depends on whether the eye has been stretched or deformed. If the thread is tight, if the product is a foreign trade product, the stitch length of all sutures is the same (except for the cuffs, collars, and pockets).
The inner layer (commonly known as Lizi) should be two layers. The layer on the skin does not matter what it is. The key is that there should be a layer of non-woven fabric in it. It is specifically designed to prevent the leakage of velvet, because the best is DuPont's , so call it DuPont paper again. There have been no non-woven fabrics in the past two years and the reaction seems not particularly good.
Choosing the first hand to squeeze the velvet, large stalks and more description of the hair piece; small stalks and more notes containing velvet high; no stalks it is full of flying silk, do not want to. Then there is pressure in the palm of your hand. The rapid recovery will show that the fluffiness is good and the warmth will be better.
There are internal standards in down jackets, which usually indicate the amount of cashmere contained. The cashmere is generally the sum of cashmere and wool, and the flying silk is single-label.
Fluffiness is also very important. Most foreign goose down products are marked with fluffiness. The highest goose down rate is only 650, and the highest goose down is only 750. The top level is still high.
There is a pile of downy three kinds of cashmere, one has a short stem, and a lot of short hair at the same time, a bit like a tall ear, usually collected from the duck or goose's chest, the real down is this; the other It is a broken piece of wool, which breaks the long feathers of the stems on the wings and tail of the duck or goose. The third type is called the flying silk. It is a process in which the short hairs fall off from the stem during the processing of the two types of cashmere. The sessile short fluff produced by the surface.
In the processing of down products, the down grade is determined by the different amounts of the above three types of down. The higher the level of each type of cashmere, the more fluffiness of the hair piece will be reduced, and the warmth will be worse. Flying silk will feel very good, very soft, but the warmth is poor, and will be agglomeration after over-drying.
As for grey and white velvet, it is no longer necessary to distinguish between the two. In terms of duck down, the southern part is mostly lake duck down, and almost all have black hair.
When selecting down products suitable for outdoor sports, attention should be paid to several indicators such as outer layer, inner layer, selected velvet, internal standard, and fluffiness.
The outer layer is generally made of high-strength, high-density nylon and has a coating (not necessarily waterproof), mainly for leakage velvet. During the processing of the outer skin, the sutures are immersed in silicone oil to prevent the sewing machine from getting too tight on the upper and lower threads and increasing the friction force to enlarge the eye of the needle, thus causing leakage of the velvet. When inspecting the skin, it depends on whether the eye has been stretched or deformed. If the thread is tight, if the product is a foreign trade product, the stitch length of all sutures is the same (except for the cuffs, collars, and pockets).
The inner layer (commonly known as Lizi) should be two layers. The layer on the skin does not matter what it is. The key is that there should be a layer of non-woven fabric in it. It is specifically designed to prevent the leakage of velvet, because the best is DuPont's , so call it DuPont paper again. There have been no non-woven fabrics in the past two years and the reaction seems not particularly good.
Choosing the first hand to squeeze the velvet, large stalks and more description of the hair piece; small stalks and more notes containing velvet high; no stalks it is full of flying silk, do not want to. Then there is pressure in the palm of your hand. The rapid recovery will show that the fluffiness is good and the warmth will be better.
There are internal standards in down jackets, which usually indicate the amount of cashmere contained. The cashmere is generally the sum of cashmere and wool, and the flying silk is single-label.
Fluffiness is also very important. Most foreign goose down products are marked with fluffiness. The highest goose down rate is only 650, and the highest goose down is only 750. The top level is still high.
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