The most controversial issue regarding GORE-TEX shoes is how to measure leaks. The only test method currently confirmed by GORE is the centrifuge test method. The method is: Place the paper flat on the shelf of the centrifuge shoe. Put the water into the shoes to be tested according to the standard water capacity, then put the shoes on the machine's shelf, close the machine and start it. The detection of the waterproof time is 60 minutes, and the operator starts the machine while recording. After the waterproof test is over, the centrifuge is turned on to remove the shoe. If the shoe is leaking, the paper on the machine frame will be wet, and the water on the glass of the centrifuge will also appear obvious. Finally, the water in the shoes is poured out and placed on the dryer for drying. The pressure generated by the centrifuge is much greater than that of normal wear of the human foot and the pressure of the external water on the upper surface of the shoe during exercise, which is far greater than the pressure generated by some consumers currently using the "bathroom soaking water".
However, we often encounter a situation in the sales process: consumers use "basin soaked in water" for a period of time and found that the shoes are wet. Think of shoes as leaky. After sending it back to the factory for centrifuge testing, it found no water leakage at all. However, consumers are “seeing the truth†and there is no other way. So what's the problem? How do we deal with such problems?
The author came to the HBN factory and took this question and visited the production line. Based on the facts, we can put forward the standards that can be measured for your reference!
The final waterproof performance of each pair of HBN GORE-TEX hiking shoes is achieved by GORE-TEX socks, not leather or nylon accessories. The leather, nylon cloth and sewing thread used for the HBN GORE-TEX hiking shoes uppers are water-repellent waterproof materials, but they are not 100% waterproof. The water-repellent material greatly reduces the original water absorption performance of the material and can delay the water seepage speed to the maximum extent.
a) Soaking time is too long, resulting in Sheung Shui, crossing the top line of the GORE-TEX membrane, causing wet shoes
HBN GORE-TEX hiking shoes perform globally uniform standards. All the materials will be immersed in water for 2 hours, the water is not higher than 1CM, this is the "siphon phenomenon" (cut all accessories in accordance with certain specifications, soaked in dyeing liquid 1CM soak 2 hours. The inspection standard is 1CM below. That is, if these materials rise by more than 1 CM within 2 hours, the material will be rejected.) In addition to plastics, all accessories have a certain siphon effect. Therefore, if the shoes are soaked in water for a long time, the water will ascend along the upper and the waterproof jacket interlayer, and will pass through the top line of the GORE-TEX socks, directly into the shoes, resulting in wet shoes. In judging this situation, most shoes fall into this category if the shoes are wet from above. If the shoe is wet and the upper is dry, it is basically a question of the waterproof quality of the shoe itself. For example: If the water is soaked for 8 hours, the Sheung Shui will be close to 8CM, and it will usually pass through the top line of the GORE-TEX membrane, causing wet shoes.
b) After a period of use, the water-repellent properties of the excipients will weaken and siphoning will occur, resulting in wet shoes.
A year or so after wearing GORE-TEX shoes, the water repellent performance of the accessories will be weakened. Therefore, the maintenance of the water repellent needs to be performed. The maintenance agent imported into the market is relatively difficult to buy, and the price is very expensive. Therefore, HBN fully considers this situation when the customer provides maintenance agent one year later.
Then, how do we respond when customers request tests to ensure that there is no water leakage?
First, there is no need to directly soak water. The defective rate of HBN GORE-TEX hiking shoes is far below 1%, so there is no need to worry about it. As long as there is a problem with the product, the manufacturer can usually handle it properly within the three packs. For example, if the product during the shelf life period is found to be in use, the siphon phenomenon can be contacted with the local distributor or the HBN after-sales service department. The maintenance service can be sent to the original factory for water repellent treatment, which can effectively solve the problem. If it is the problem of waterproof quality, the original factory directly to the customer unconditionally returned.
Second: GORE-TEX shoes are not rain boots and are waterproof hiking shoes. Its waterproofness has certain prerequisites. Should not be long-term soaking; First, too long soaking damage to the cortex, and second, because the siphon phenomenon will lead to water seepage.
Third: Before going further, you can also use appropriate testing during the run-in period to ensure 100% quality.
Fourth: Buy reliable GORE-TEX shoes. One is to choose a regular product (generally there must be a sales agent in the country, the product can promise Three Guarantees) formal channels (authorized dealers by the general agent), the problem can be carried out after the corresponding service. Because of the special nature of outdoor climbing shoes in the outdoor environment, it is very important for after-sales.
Fact 1: Aside from plastic, all excipients have a certain siphon effect. GORE-TEX shoes perform globally uniform standards. The material will be immersed in water for 2 hours, the water is not higher than 1CM. Cut out all accessories. In accordance with certain specifications, soak in the staining solution 1CM deep soak for 2 hours. The test standard is 1CM or less. That is, if these materials rise by more than 1 CM within 2 hours, the material is not qualified.
Therefore, some customers put their shoes in a water tray. Within a long time, the water will rise along the leather surface and the waterproof jacket interlayer, and will diffuse through the top line of the GORE membrane directly into the shoes, resulting in wet shoes. In judging this situation, if water is wet from above, most of the situations are such problems. If the shoes are wet and the upper is dry, it is basically a problem with the quality of the shoes themselves.
The consumer usually asks: How can I measure water? The first is to choose a regular brand of products, there is a guarantee of after-sale commitment. Even if something goes wrong, it can be solved. Second, it can test whether the product leaks when it is running in. The time is within 2 hours.
Why the most authoritative test method is a centrifuge. Welcome dealers and clerk to ask their own questions, we will jointly with the GORE company to answer everyone.
Next time introduce the most common centrifuge detection.
The waterproofness of GORE-TEX shoes is commonly handled in two ways. It can only be waterproof under certain conditions and for a certain period of time, and is related to the height of the water surface. If the water surface is close to or higher than the top line of the waterproof jacket, after the shoes are soaked for a long time, the water of the leather surface and the waterproof jacket interlayer will be generated. The siphon phenomenon will also be permeable. The correct test method for the waterproofness of Gore Tex shoes is to fill a certain height of water in the shoes, and throw it on the centrifuge for 20 minutes. Since consumers do not have such equipment, they are often tested by soaking. This method is not only unscientific, but can not get accurate test results, but will damage leather. If a certain part of the foot touches a certain part of the waterproof jacket for a long time, it will also cause the film damage of the part, and it will also affect the waterproof. Therefore, it is impossible to expect outdoor shoes to be waterproof like rain boots, and in use requires good maintenance to reduce damage and prolong the life of the shoes.
The pressure generated by the centrifuge is much larger than that of normal wear of the human foot and the pressure of the external water on the shoe upper when in motion, and is also much larger than the pressure generated by the water in the wash basin.
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