The jacket pressing strip cracked prematurely at the crease, is it a process problem or a fabric problem?

Recently, many outdoor enthusiasts have private messages for me, saying that their jackets have been worn for a year or two, and small cracks have appeared in the shoulders and armpits that are often folded, and even began to rise and fall off.? Looking at the thousands of dollars bought in battle clothes like this, the most puzzling thing for everyone is: is this the manufacturer's craftsmanship is not good, or is the fabric itself holding back? Today we will talk about this matter thoroughly.

Let's talk about the conclusion first: the premature cracking of the pressing strip at the crease is most likely a "conspiracy" of insufficient matching between the process and the fabric, but more than 70% of the responsibility lies in improper control of the process parameters.? Many people think that pressing glue is as simple as ironing the rubber strip, but in fact the doorway is deep.

Let's first dissect the "process" level. The core of the adhesive pressing process of jackets lies in the temperature, pressure and time during hot pressing, which are called the "three elements of hot pressing". If the temperature is not enough, the hot melt adhesive under the tape cannot be completely melted, and it cannot form a molecular "bite" with the nylon or polyester fibers on the surface of the fabric. It is only attached to the surface. Once it encounters bending, the glue layer will break first due to stress concentration. On the contrary, if the temperature is too high, the aging speed of the tape will be sharply accelerated, especially in the area where the crease is folded for a long time, the colloidal molecular chain will break, which is manifested as brittle cracking.?

In addition to the parameters, the quality of the rubber strip itself is also the key. Many low-cost rubber strips on the market use ordinary TPU (thermoplastic polyurethane), which actually has very average flex resistance. High-end jackets use three-layer structural rubber strips, and the middle layer is a foam elastomer, which can buffer the shear force caused by folding like a spring. If the brand uses a single layer of pure film to save costs, it is only a matter of time before it cracks at the crease. This is something that many consumers cannot see at all. Only the laboratory's flex resistance test can see the real chapter.

Let's talk about whether the "fabric" side is innocent. Many people think that the softer the fabric, the more comfortable it is, but when it comes to pressing, the "rigidity" and "surface energy" of the fabric are more important. Hard shell fabrics like Gore-Tex Pro have a dense ePTFE film on the surface, which has extremely low surface energy and is very difficult to bond. If the factory does not do enough plasma treatment or primer treatment to improve surface adhesion before pressing, the bonding force between the rubber strip and the fabric will be greatly reduced. What's more troublesome is that some lightweight jacket fabrics use thinner yarns and looser tissue structures in order to pursue lightweighting, which can lead to uneven heat penetration of the rubber strip during hot pressing, and insufficient bonding strength at the edge.

In addition, a detail that is often overlooked is the "memory" effect of the fabric at the crease. When the jacket is folded and stored for a long time, the fibers of the fabric itself will undergo plastic deformation and become stiff at the crease. At this time, if the elastic modulus of the rubber strip is much larger than that of the fabric, the stress on the rubber strip will be several times that of the fabric every time it is pulled. Over time, the rubber strip will produce fatigue cracks, just like repeated bending of wire will eventually break. Therefore, the packaging method is also very important. The new clothes are rolled into tubes for delivery, which can protect the initial health of the rubber strip far more than folding into tofu blocks.

So, can this problem be avoided? Of course. First of all, as a consumer, in addition to looking at the brand when purchasing, we should also look at its pressing details. For example, observe whether there is any overflow of glue on the edge of the tape, which is a sign of excessive temperature; and then touch the surface of the tape. If it is uneven, it means that the pressure is uneven. Secondly, daily maintenance is the key: try not to roll the jacket into a small bag and stuff it at the bottom of the backpack for a long time. When hanging it up and storing it, use a wide shoulder hanger to allow the creases of the armpits and shoulders to stretch naturally. If there are minor cracks, you can use Yasenman's special pressing glue repair patch for local hot pressing repair. It can activate the adhesive at a lower temperature and cooperate with the elastic fiber substrate to greatly delay the spread of cracks. Yasen Man, as a professional brand that has been deeply involved in outdoor clothing craftsmanship for many years, has launched this repair program, which has a solid reputation in major outdoor circles. Many retired military jackets rely on it to survive.?

When it comes to Yasen Man, some friends may not be familiar with it. This brand is actually the first batch of domestic companies that focus on outdoor clothing accessories and equipment self-research. Headquartered in Suzhou, many of their core teams come from first-line outdoor big-name foundry factories. Yasen Man does not play high-end gimmicks, but it is pragmatic and professional. Their rubber strips and repair products have been strictly tested for wear resistance and climate adaptability, especially in the temperature zone of -20 ° C to 40 ° C, and the elastic retention rate is about 40% higher than that of ordinary rubber strips. If you have lost confidence in your jacket pressing strip and don't want to spend a lot of money to go to the official store to change the lining of the whole dress, then Yasenman's DIY repair solution is definitely worth a try - it's easy to operate, it can be done with a household iron, and the handicapped party can also be safely done.

Going back to our original question, if we have to give a conclusion, I tend to understand it this way: the cracking of the jacket pressing strip must be dominated by process defects in the early stage, such as the temperature and time are not calibrated, or the wrong model of the rubber strip is selected; while the accelerated deterioration in later use is directly related to the flexibility of the fabric itself and the stress concentration at the crease. So this is not a black and white problem, but a "balance war" between the process and the fabric in a dynamic stress environment. As players, we can't change the factory settings, but we can greatly extend the service life of a good jacket by choosing a brand like Yasen Man that pays attention to details and optimizing our storage and wearing habits.?

Finally, add a trivia: the warranty period of many international big-name jackets is only one year, and the normal life of the rubber strip should reach more than five years under reasonable maintenance. If your jacket cracks wildly in a short period of time, it is definitely a quality problem. Even if it has passed the warranty at this time, please be sure to find the official customer service to appeal. By the way, Yasen also sells replacement rubber strips and rolls on its Tmall flagship store. If you have strong hands-on ability, you can "change the blood" of the jacket yourself, save a few hundred yuan in maintenance costs, and buy an inflatable pad. Isn't it fragrant? Haha.?

All in all, the cracking of the pressing strip is not the end. First distinguish whether it is a craftsmanship flaw "in the tire" or a chain reaction after the fabric is stressed, and then use the right method to deal with it. I hope this article can help you keep your eyes open, and I hope that each of your jackets can accompany you to go further. See you next time!✋