Did you know?
Clothes worn by ice and snow athletes
RequiredWaterproof, Moisture permeabilityTwo major features
Seems a bit contradictory?
Today, we take outdoor jackets as an example
Take you into the laboratory Take a look at these two basic functions
How do you evaluate it?
Jacket Functional testing
Waterproof experiment
Waterproof definition: fabric resists waterWetting and PenetrationPerformance. National recommended standards require that not only the fabric is waterproof, but the seams of the fabric must also be waterproof.
01
Fabric surface resistswetting by waterextent
Water resistance level:According to GB/T 4745-2012 “Waterproof Method for Testing and Evaluation of Waterproof Properties of Textiles”
Water-repellent experiment:Pour 250mL of water into the funnel and continue spraying the fabric surface for 25-30 seconds.
Graphic surface wetting degree of fabric after spray test
The black shaded part is the part wetted by water after the experiment. The smaller the black part, The smaller the resistance of the fabric surface to being wetted by water,Indicates that the waterproofness of the fabric is better.
Laboratory waterproof performance tests of several different fabrics
It can be seen that the three fabrics have a certain degree of moisture resistance, which is enhanced in sequence.
02
Put a piece of absorbent paper under the jacket and pour water on the surface of the jacket. The surface of the fabric is not immediately wetted. When the water drops are slapped on the water surface, they spread out from the surface of the fabric like a lotus leaf. The water below absorbs water. The paper is not wetted either.
Family experiment 2: moisture permeability
Take a cup of hot water, cover the cup with fabric (the navy color in the picture is the jacket fabric), put the glasses on Place the lens on top of the fabric. You can see that water vapor can penetrate the jacket fabric very well and fog the spectacle lenses.
Tips for buying jackets
1.Look at the tag: It is marked as “Jacket” , look at the standard marked on the tag: GB/T 32614-2016 “Outdoor Sportswear Jackets”.
2. Look at the functions: The product page of the e-commerce platform will have words such as “fully glued, waterproof, moisture-permeable, wear-resistant, breathable”, or specific parameters and test reports. A qualified jacket has a moisture permeability of over 3000g/(m2·24h) and a waterproof performance of over 5000mmH2O, which can basically guarantee that it will not get wet under heavy rain, and can also support the perspiration needs of moderate exercise.
3.Look at the purpose: Generally, outdoor clothing pages will introduce the use of “hiking, mountaineering, skiing”, etc., and consumers can choose according to their actual needs. The three-in-one jackets on the market are generally “shell + liner”, and the liner is usually fleece or thin down, which can be selected according to the need for warmth. At the same time, pay attention to whether there are tapes at the seams and whether the zippers used are waterproof zippers.
Little Easter Egg
Follow the “sandwich method” when dressing outdoors
Wind and rainproof , warm and comfortable!
