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What are some possible reasons for the zipper pull on a double-bone waterproof bag not matching?
What are some possible reasons for mismatched zipper pulls on double-bone waterproof bags? Double-bone waterproof bag zippers, while small and simple, are precision parts, and the zipper pulls are technically intensive products. If either side deviates, the following problems may occur. First, jamming
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What are some possible reasons for mismatched zipper pulls on double-bone waterproof bag zippers?
Although small and simple, double-bone waterproof bag zippers are precision parts, and the zipper pulls are technology-intensive products. If either side deviates, the following problems will occur.
First, jamming
Poor smoothness after matching. The general reason is that the zipper size is too large and does not match the size of the puller. The common phenomenon of nylon zippers that cannot be pulled is usually caused by the fabric of the zipper exposing the teeth. From the back of the zipper, it can be seen that the fabric covers the chain teeth, and the zipper fabric seam after merging is very tight, with almost no gap. When pulling, the lower rib of the slider is restricted and stuck, and it cannot be pulled. In this case, the zipper needs to be adjusted and repaired.
Second, bursting open
Bursting open can be divided into several situations. For example, if the puller size remains unchanged and the zipper size becomes smaller, the zipper is easily burst open after matching. Some functions are normal, and some functions have a blowout. At first, the technicians thought it was the zipper's fault. After comparing and measuring the zippers, they found that the zipper specifications varied greatly, and then they realized that it was caused by different zipper specifications. Therefore, when matching sliders, we must pay attention to not mixing different specifications.
In the process of matching double-bone waterproof bag zippers and zipper pulls, we often attach importance to smoothness, believing that the looser the feel, the better, while ignoring its negative effects. If the zipper pull is too loose, the double-bone waterproof bag zipper may not burst open when pulled normally, but it is easily burst open when folded, and it will also affect the load tension, so special attention should be paid during matching.
Third, lock lost
Lock loss is also a common problem. If the lock is lost after matching, it is necessary to confirm whether the spring sheet and needle lock of the slider are normal. If the spring sheet is too weak or inelastic, the needle lock will lose its function. Secondly, pay attention to the baking paint. If the baking paint is too thick or uneven, the too thick paint layer on the needle lock will easily cause the needle lock to become larger, and it will not be able to enter the tip of the chain teeth, resulting in lock loss, or the too thick paint layer on both sides of the slider cap will solidify, jamming the spring sheet, and the needle lock will not be able to exert force, resulting in lock loss.
If the slider is normal, we need to confirm whether the specifications of the double-bone waterproof bag zipper are standard. If the zipper specifications are too large or too small, the locking function will be affected. The single width standard of plastic zippers is particularly important, so special attention should be paid.
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