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| Quality Standard Performance Requirement |
1 Wash shrinkage of the zipper is not more than 4% and dry cleaning shrinkage not more than 3%.
2 Resistance to organic solvent. Immerge zipper into carbon bichloride solution of 20±2 ℃ for 2 hours and then take out letting it dried naturally. The zipper (pulled by objects) still maintains useful.
3 Anti-corrosion capability of zipper parts and metal plating. Soak the sample in 3% Nacl solution for 180mins. And take out letting it dried naturally. Eye surveyed it should bear no corrosion.
4 Additional conditions of certain sales markets. For instance, countries of EC stipulate that major alloy material of pull head should not contain Ni. Prohibition------and dyestuff of yarn bands should no contain S and pb, avoiding azo dye. |
| Design Requirements |
1 Plasticized steel zipper teeth should be bright, rich, no flush, no semideveloped teeth and damaged teeth. And nylon zipper teeth should have smooth hand feeling, without burr and the pull head free of -- --The teeth should be tidily ranged, no inclination, broken teeth root and crack edges.
2 Zipper should be of bright color and luster, no spot and defect. It should have soft hand feeling and upright looking without rumple or distortion, teeth joggling excellently.
3 Yarn band of plasticized steel zipper or metal zipper should not have broken veins. And the suture should be straight and right on the central line, without jumping and back sewing -- --and lower ending should not be installed slanting.
4 Tidy viscose paste. Viscose paste finds no embrittlement under -35℃; and not broken by 180° turning for 10 times.
5 Plating pull head should be bright, without crusting and serious scoring. And the thickness of plating layer should be more than 3?m at least. Spray-paint and injection pull head should have bright colored surface without uncovered defects etc.
6 At the bottom, there should be clear trademark. |
| Ordinary Problems and Measures |
1 Poor Sliding and Ill Opening and Closing
Pulling the head forcefully, you'll get failed zipper teeth joggling. Under this circumstance, please coat wax or grease spray on the surface or inner part of the teeth -- --times, then you'll get free sliding.
2. Zipper Teeth Damage
When zipping too much stuff inside the bag, the zipper will have its teeth breaking off from the TAPE since under too much forces if pulled forcefully. This is a sort of serious failure. Then, draw two sides nearer to make the pull head through easily and finally zip close.
3. Pull Head Catching the Fabric
When zipping, the pull head may catch the thread or fabric and then stop sliding. Under this circumstance, if pull forcedly, it will catch deeper. It should turn back and let go the fabric. For full catch, do not pull too forcefully. Please return slowly. When sewing the zippers, please be noted not to leave failure factors.
4. Putting on and off clothes
Please put on or off after completely zipped. To zip on, button and fix the ending first, and then you'll get smooth sliding. If left middle way, clothes on or off will be stressed by unexpected large force thus damaged. It's the same way to zippers of boots, gloves and ornaments. Handle correctly then you'll get in less trouble.
5. Proper Material, Proper Temperature and Skillful Ironing
The temperature of iron should diverge according to different zipper material, so as to keep its strength and in shape. When ironing, do zip on first and place pull head at proper position. Do not keep the pull pipe up-down or erect. Spread lining cloth under in case of unexpected occurrence. |
| Proper Wash |
| Zip on and fix the pull head prior to placing into the washing or drying machine. If washing opened, the upper ending will damage the fabric and strong alkali detergent or Cl whitener in TAPM will dissolve olefin or grease wax coated on the zipper. Be noted to that. After the wash, if zipper sliding goes wrong, please coat wax or grease spray, and move the pull head for 2 or 3 times, you'll get free sliding. |
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