Something You Should Know about Nylon Zipper

A waterproof zipper is a branch of a nylon zipper, which is a nylon zipper with some special treatment. Commonly used features include: sticking PVC film, sticking TPU film, soaking in waterproof agent, coating waterproof zipper and so on.

The main material used for the waterproof zipper with PVC film is PVC, and the main component is polyvinyl chloride. TPU film is a film made of TPU pellets through a special process. It inherits the excellent physical properties of TPU and has a wide range of applications. Because TPU overcomes many defects of PVC, TPU waterproof zipper is also superior to PVC waterproof zipper in terms of performance. The characteristics of the coated waterproof zipper are that it does not fall off, does not turn white, does not embrittle, is resistant to low temperatures of minus 70 degrees Celsius, is environmentally friendly, soft and has good water resistance.

Use 

The purpose of the waterproof zipper is mainly to play a waterproof function when it encounters rain. Waterproof zippers are widely used, suitable for: cold clothing, ski clothing, down jackets, sailing suits, diving suits, tents, car and boat covers, raincoats, motorcycle raincoats, waterproof shoes, firefighting clothing, luggage, jackets, fishing clothing and other waterproof related products.

How to choose a waterproof zipper?

The main factors to consider when choosing a waterproof zipper are the beauty of the product and the practical effect of waterproofing. Waterproof zippers should be considered from the following aspects:

1. The waterproof zipper film does not tear.

2. Smoothness, it is generally believed that the better the smoothness of the zipper, the better the quality of the waterproof zipper.

3. The surface of the waterproof zipper film is smooth and delicate, with a smooth feeling similar to leather, which is the appearance of high-quality waterproof zippers.

4. Waterproof effect: The size of the middle seam is directly related to the waterproof effect of the waterproof zipper. If it is too large, it will obviously not have the waterproof effect and lose the meaning of the waterproof zipper itself.

5. The color difference of colored waterproof zippers should be small. The difference between the color of the zipper tape and the fabric is the color difference. The color of the film surface and the color of the tape surface should be controlled by 5%.

6. Service life, the quality of the adhesive film on the waterproof zipper is directly related to the service life of the waterproof zipper.

The steps of hidden installation of nylon zipper

1. First prepare the nylon zipper and the fabric that needs to be zippered.

2. Then iron the seam separately. If you don't need to zip the entire seam, use a 1.5 cm wide seam to sew the place where the zipper needs to be installed. Then, the stitch length used in the seam allowance without a zipper should be finer, and the starting and ending positions should be fixed with reverse stitches.

3. Use a hand stitch to fasten it with the seam allowance, align the zipper face down and center the seam allowance.

4. Install the unilateral presser foot for sewing zipper to the sewing machine, and turn the fabric to the front. Push the presser foot down to the right side of the needle and, starting from the right side of the zipper opening, press a topstitch on the fabric with a seam allowance of 0.7 cm.

5. When you are ready to sew the other side, when the stitching on one side is complete. First look at the position of the bottom zipper mouth iron. If you can avoid it, you can directly turn 90 degrees, let the needle cross the top of the zipper and turn to the other side to start sewing. When turning, the needle should be in the lowest position first, then raise the presser foot, and then lower the presser foot to continue sewing. When sewing over the zipper teeth, do not step on the electric motor, but turn the sewing machine wheel by hand and let the needle carefully pass over the zipper teeth, which will prevent the needle from breaking.

6. Push the presser foot down to the left side of the needle, if the iron bag is just in the turning position. Start sewing a top stitch on the left from the opening, and don't forget to backstitch at the beginning and end of the crimping thread.

7. You can remove the basting thread on the fabric without basting first. For those who are proficient in driving skills. But for beginners, it is still necessary to have more steps in the production process. Although it is a little more troublesome, it can guarantee satisfactory results.

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