What is the standard for the fluffiness of down jackets?

What is the standard for the fluffiness of Down Jackets?

Fluffiness is an important indicator for measuring the thermal insulation performance of down jackets. It reflects the degree of volume expansion of down under a specific pressure. The higher the fluffiness, the better the thermal insulation performance of down jackets. The following is a detailed interpretation of the fluffiness standard of down jackets.

1. Definition and test method of fluffiness
Fluffiness refers to the height of a certain mass of down sample under constant pressure in a container of specified volume. It is a key indicator of down and directly affects the thermal insulation of down jackets. According to the latest national standard GB/T 14272-2021 "Down Clothing", the test method for fluffiness has been changed from the original oven reduction method to the steam reduction method, and the test conditions are more stringent.

2. Fluffiness standard of down jackets
According to the GB/T 14272-2021 "Down Clothing" standard, the fluffiness of down jackets should meet the following requirements:
Adult down jackets: Fluffiness shall not be less than 450 cubic centimeters/30 grams.
Children's down jackets: The bulkiness shall not be less than 400 cubic centimeters/30 grams.
Baby down jackets: The bulkiness shall not be less than 300 cubic centimeters/30 grams.

III. Conversion method of bulkiness
There are usually two units of bulkiness: centimeters (cm) and filling power (FP). The conversion formula is as follows:
Conversion constant: 1 cm = 39.37 FP.
Specific conversion: For example, the filling power corresponding to the bulkiness height of 15.5 cm is 15.5 × 39.37 = 610 FP.

IV. Relationship between bulkiness and thermal insulation performance
The higher the bulkiness, the better the thermal insulation performance of The Down Jacket. The common bulkiness range of down jackets on the market is as follows:
600-700 FP: suitable for daily wear, with good thermal insulation performance.
700-800 FP: suitable for outdoor extreme cold environment, with excellent thermal insulation performance.
800 FP and above: high-end products with excellent warmth retention.

V. How to choose A Down Jacket with high fluffiness
(I) Check the label
When buying a down jacket, check the fluffiness mark on the product label. According to the GB/T 14272-2021 standard, the label of the down jacket must clearly indicate the measured fluffiness value.
(II) Test fluffiness
Press test: Lay the down jacket flat, press the down jacket with your hand, and observe its rebound after releasing it. The shorter the rebound time, the higher the fluffiness.
Touch test: Touch the down jacket with your hand to feel its softness. The higher the down content, the softer it feels, and the fluffiness is usually higher.
(III) Pay attention to other indicators
In addition to fluffiness, you should also pay attention to the down content, filling amount, and anti-drilling properties of the down jacket. The higher the down content, the better the warmth retention of the down jacket.

VI. Summary
The fluffiness of down jackets is an important indicator to measure their thermal insulation performance. According to the national standard GB/T 14272-2021, the fluffiness of adult down jackets shall not be less than 450 cubic centimeters/30 grams, that of children's down jackets shall not be less than 400 cubic centimeters/30 grams, and that of infant down jackets shall not be less than 300 cubic centimeters/30 grams. When purchasing down jackets, consumers should check the fluffiness mark on the label and verify its actual fluffiness through compression test and hand feel test. At the same time, pay attention to other indicators such as down content and filling volume to ensure that you buy down jackets with excellent thermal insulation performance.