The zipper is one of the important accessories of clothing. The zipper is related to the functionality of the clothing. A qualified zipper ensures the beauty and functional requirements of the clothing. Therefore, when using the Decorative Metal Zippers, you should pay attention to the correct inspection of the quality of the zipper. The following provides an easy way to identify the quality of a zipper.
Plastic steel zipper
① Visually inspect the appearance of the Black Teeth Metal Zipper
1. Check whether the color of the zipper is bright, whether the color of each component is consistent, and whether there is obvious color difference; whether the tape has colored flowers, dirt and wrinkles.
2. Whether the surface of the element is shiny, whether the middle of the front of the element is concave, whether there is overflow at the root of the element, and whether there are obvious quality problems such as missing teeth and no teeth.
3. Whether the lead at one end of the hand-held zipper is straight, flat, wavy or curved when the zipper is in a natural hanging state.
4. Whether the adhesive position of the tape is symmetrical, and whether there is skew and floating.
5. Whether the trademark on the bottom of the slider and the front of the slider is clear.
② Detect the feel of the Nylon Long Chain Zipper
1. Pull the slider back and forth with your hand, feel the beating of the slider, and no beating is normal.
2. When the slider starts at the upper and lower stops and the socket, it is normal to feel stuck or blocked.
3. Whether the pull tab can be flipped flexibly within 180°.
4. The pull tab is placed on the zipper naturally, and the two fastener tapes are pulled apart with two forces at an angle greater than 60°. The applied pulling force should not be too large or too strong. If the slider does not slide, it means the slider It has a self-locking effect. If the slider slides, it means that there is no lock or the self-locking strength is not enough.
5. When the pin is inserted or pulled out, the hand feels light and flexible.
6. Pull the pull tab up by hand along the plane perpendicular to the slider body, and the slider cap cannot be loosened or fallen off.
Nylon zipper
① Visually inspect the appearance of the zipper
In addition to the common points with the injection-molded zipper, the appearance requirements also depend on whether the teeth of the fastener elements are broken, and the breakage will affect the flat pull strength of the zipper. Check whether the position of the central thread and the suture is appropriate, whether there is any reverse stitching of the chain teeth during stitching, whether there is a reunion or skipped stitches; the suture should be sewn on the central thread.
② Detect the feel of the zipper
In addition to the common points with the plastic-steel zipper, it is also necessary to touch the surface of the fastener element to see if it is smooth, and it is normal to be smooth without rough burrs.
Metal zipper
① Visually inspect the appearance of the zipper
In addition to the same inspection items as the plastic-steel zipper, it is also necessary to see whether the chain teeth feet are broken, whether the edge of the tooth pit is cracked, and whether the chain teeth are arranged neatly.
② Detect the feel of the zipper
It is the same as the detection method of plastic steel zipper.
Post time: Sep-08-2022