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What are the specific classifications of zippers?
I. Classified by material: nylon zippers, resin zippers, metal zippers. 1. Nylon zippers: invisible zippers, double-bone zippers, woven zippers, reverse osmosis zippers, waterproof zippers, etc. 2. Resin zippers: gold (silver) tooth zippers, transparent zippers, translucent zippers.
Source:
I. Classification by material: Nylon Zipper Resin Zipper Metal zippers.
1. Nylon zippers: invisible zippers, double-bone zippers, woven zippers, reverse osmosis zippers, waterproof zippers, etc.
2. Resin zippers: gold (silver) tooth zippers, transparent zippers, translucent zippers.
3. Metal zippers: aluminum tooth zippers, copper tooth zippers (brass, white copper, bronze, red copper, etc.), black zippers
2. Classification by variety 1. Closed-end/crock-0/2. Open-end zippers (left and right insertion) 3. Double closed-end zippers (X or O) 4. Double open-end zippers (left and right insertion).
III. Classification by specifications and operation process.
3#, 4#, 5#, 7#, 8#, 9#... The size of the 20# model is proportional to the size of the zipper teeth.
IV. The specific technical indicators of zippers are as follows.
1. 3# invisible zipper
Combination width 4.15+0.03 single width 2.65+0.03 thickness 2.10+0.05 mm..
Electroplated slider: mouth width 4.4 mm, mouth height 1.9 mm..
Pigment slider: width 4.35 mm, height 1.85 mm.
Ordinary tape is suitable for thick fabrics; lace tape is suitable for thin fabrics.
General inspection: Advantages: high output (speed adjustable); Disadvantages: sometimes the top stop cannot be pulled to the root.
U-shaped top stop: Advantages: the top stop can be pulled to the root, suitable for clothing that needs to be pulled to the root; Disadvantages: low output, 4000 pieces/8 hours.
Factors that easily lead to defective products of 3# invisible zippers:
Large sword bend; slight scratches on the mi-tooth meshing part when fixing the inch; resulting in the lower stop point not being welded in place; the mi-tooth is also exposed with the upper stop point, and the upper stop point is easy to fall off; the slider is not insured after spraying.
2. 3# nylon zipper
Combination width 4.15+0.05 single width 2.65+0.03 thickness 2.00+0.05 mm..
Zipper mouth height: 2.05-2.15, zipper mouth width: 4.2-4.25.
Closed end:
When setting inches, it is not necessary to divide the high and low microphones, so sometimes the adjustable head can be opened; when laying, the fabric edge weft density is relatively loose, which is easy to cause drawing, affecting the appearance. The fabric pattern within the range of the lower stop width is best to use an up-and-down weaving method, so that the lower stop will penetrate the fabric tape, and it is not easy to draw. The inspection position must be ensured to be flush. The front tape head is 2.2 mm, and the rear tape head is 1.8 mm. The injection-molded front and rear tape heads ensure 4.0 mm..
Open end:
It is difficult to pick teeth one by one. Because the tooth spacing is relatively small (1.2 mm), it is best to use a fixed root plate, inserted on the right, inserted on the left high and right low. The microphone needs manual repair. The ultrasonic microphone is pressed to the root, the tapes on both sides are evenly distributed, and the line is continuous. The punched cloth foot is about 8 mm long. The pulling speed when pressing the square bolt should not be too fast. Both sides should apply even force and pull it into place. The slow-pressure mechanism must play a role. In this way, the mold is not easy to damage, and the pressure is large, and then the high-pressure working pressure changes from low pressure to high pressure, and high-pressure clamping is performed. The difference between the two induction switches is about 20 mm. Because the thickness of the 3# nylon is relatively thin, the difference in the operation of the induction switches is small, and the requirement for adjusting the position of the induction switches is high.
3# nylon zipper: factors that easily lead to defective products: due to stacking reasons, the upper thread is easy to break when sizing, and the ultrasonic half-microphone is not pressed to death, resulting in insufficient tail pulling.
Note: 3# nylon tail mouth should be equipped with a tail mouth slider. If the packaging is normal, the upper stop block can be injection molded.
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