Common problems with plastic zipper puller

The plastic zipper is small and simple, but it is a precision part. The zipper head is a technology-intensive product. The structure of the macro world is designed according to the standard zipper to form a perfect combination. If any deviation occurs, the following will result The problem arises.

Common problems with plastic zipper puller

1. The lightness is poor or cannot be pulled

After matching, the smoothness is poor. The general reason is that the size of the slider zipper is too large, which does not match the size of the slider. The most common phenomenon of inability to pull nylon zipper is generally caused by the zipper's cloth belt out of the tooth head. You can see from the back of the zipper that the cloth tape covers the sprocket. After the zipper is combined, the cloth seam of the zipper is very dense and there is almost no gap. When pulling, the lower rib of the slider is restricted and jammed, so it cannot be pulled. The zipper needs to be adjusted and repaired.

2. Burst

There are several situations for metal zipper slider bursting. For example, if the size of the slider remains the same, but the size of the zipper becomes smaller, the zipper will burst after matching. Our 3# metal zippers have experienced this phenomenon. Some functions are normal, while others burst. At first, the technical staff thought it was the reason for the pull head, but after comparing and measuring the zipper, they found that the specifications of the zipper were quite different, and then they realized that it was caused by the different specifications of the zipper. Therefore, when we match the semi lock zipper slider, we must pay attention to the different specifications can not be mixed.

In the process of matching plastic zippers and sliders, they often pay attention to lightness, thinking that the looser the feeling is the best, but ignores its negative effects. Nylon zippers such as the sliders are too loose on the zipper and may not pull normally. There will be bursts, but when the zipper is folded and pulled, bursts are prone to occur, and it will also affect the load time, so be careful when matching. Generally, a zipper specification of 0.2mm is more appropriate, and the degree of light slip can refer to industry standards.

3. Loss of lock

Loss of lock is also a common problem of double zipper sliders. If there is a loss of lock after matching, first confirm whether the spring leaf and needle lock of the slider are normal. If the spring leaf is too weak or not elastic, the needle lock will lose its function. Secondly, pay attention to the baking varnish. If the baking varnish is too thick or uneven, the needle lock will become larger if the paint layer on the needle lock is too thick. If it cannot enter the stop point of the sprocket, it will lose lock, or the thick paint layer will solidify on the slider on both sides of the cap, the spring sheet is jammed, and the needle lock cannot be forced to lose the lock.

The above are some of the problems that we often encounter with high quality zipper sliders in our work. Through case analysis, we can find out the cause of the problem. We hope to encourage everyone to prevent the problem in advance. Plastic zipper and zipper puller are inseparable, and the two can complement each other with a reasonable combination.