Zipper

 

Zipper

A zipper is a fastener, is a commonly used device for temporarily joining two edges of fabric. It is used in clothing (e.g., jackets and jeans), luggage and other bags, sporting goods, camping gear (e.g., tents and sleeping bags), and other items.

 

1. Top tape extension
2. Top stop
3. Slider
4. Pull Tab
5. Tape
6. Chain Width
7. Bottom stop
8. Bottom Tape extension
9. Single tape width
10. Insertion pin boll
11. Retainer box
12. Reinforcement film 

 Types of Zipper

DEPENDING ON END:

Open end zipped:

• Right insertion of sleeve & left puller (Men’s)
• Left insertion of sleeve & Right puller (Women’s)

Closed end zipped:

• Not detachable

DEPEND ON TEETH SIZE:  

                        3 SIZE

                        4 SIZE

                        5 SIZE

It depends on teeth length, if 3 mm then size 3.

DEPEND ON TAPE:

Polyester: tape material is made up with polyester fiber

Cotton: tape material is made up with cotton fiber

DEPEND ON PULLER:

Double puller: two puller is available

Single: one puller is available

DEPEND ON SLIDER LOCK:

Auto lock: locked when puller is down position

Semi lock: locked when puller is straight position

Non lock: lock function is not available

DEPEND ON TEETH MATERIAL:

 Nylon

Vislon

Metal Nylon

Nylon: 

 Vislon

 Metal

Manufacturing of Zipper

• Japan makes 90% of the world's zippers
•  One large manufacturer is YKK, with production facilities in 68 countries, and the world’s largest zipper manufacturing center in Macon, Georgia, USA.
•  Almost all the rest are made in South Asia and East Asia. Major zipper manufacturing countries in South Asia are now Bangladesh, India and Pakistan.

 Required Quality of a Zipper

•  AZO Free 
• Nickel Free
• Nonmagnetic.
• Non toxic
• Zipper teeth is not shrink so zipper tape should be shrink free.
• Fabric should have max 3% Shrinkage otherwise garment would be wavy And would be difficult to slide for slider.
• To go up and down easily.