Shanghai Uneed Textile Co.,Ltd |
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Factory Low Price Best Sell High Quality Nylon Teeth Close End Reverse Zipper
Zipper is a connecting piece that combines or separates articles by means of continuously arranged chain teeth. It is now widely used in clothing, bags, tents and so on.
nylon zipper
Pull head mouth height: 2.9-3.0 mouth width: 6.5-6.6 combined
width: 6.45 ± 0.05 single width: 4.15 ± 0.05 thickness: 2.70 ± 0.05
Ordinary tail opening: the fixed size and gear selection shall be
adjusted at any time according to different code installation (due
to the change of tooth pitch), so as to ensure that the right
insertion is high on the left and low on the right, on the
contrary, the ultrasonic half grain microphone is pressed to the
root, the position of the adhesive tape shall be flush, so as to
ensure that the pinhole of the bolt box is punched to the bottom,
the length of the punching cloth foot is about 9.5mm, so as to
ensure that the bolt box is installed to the root, the punching
needle of the bolt penetrates in the local position, and the side
with the shank of the box shall be clamped firmly, And the punching
needle penetrates in the Bureau.
When repairing the folding die, be sure to pay attention to the
inclination of the lower die, that is, the right insert is high on
the left and low on the right, and the left insert is vice versa.
In addition, the strength test shall be carried out, and the
production can be carried out only after it is qualified.
Factors prone to defective products: due to the opening of the
cloth foot is too short or too long, the strength is not enough,
the bolt block cannot be installed to the root, resulting in the
block head skew, poor matching, and the strength can not reach the
standard value. The reason is that the punching is too far away
from the outer side of the tibia, and the punching is too deep,
resulting in the fracture of the tibia.
Injection tailing: the same as for sizing and ultrasonic, and the
opening mold needs to be changed. (Note: when changing the mold,
pay attention to the starting position, because the mold stroke is
different, otherwise it is easy to damage the mold). For specific
adjustment, put a piece of paper into the mold, manually reel the
pulley, and the paper is just cut off. The length of the punching
foot is 9.5mm. Please refer to 3# nylon tailing press for pressing
the square pin.
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