Now you have me playing with the zipper on my jacket so that I can observe for myself, ha ha! :)
I'm no true expert, but it seems to me that its the way the zipper teeth push through the two top holes on the zipper slider that makes the sound, i guess the edges of the openings rub up against the row of zipper teeth to kind of "vibrate" ? Hope I was of help.
By leveling their handles after zipping!
A hissing or sibilant sound such as that made by a flying bullet. To make, or move with, such a sound.
Zebras zipping zooming water
You don't have to replace zippers like you have to replace buttons
If you mean a high-pitched screeching or whistling or zipping sound, they're probably slipping. New brake pads?
The zipper makes noise because the edges of the opening rub against the row of the zipper teeth and it makes a vibration sound.
zipping
Riri (Swiss) was the first company to produce plastic molded zippers in 1955.
They made buttons first.
There are lots of 7 letter words that start with Z. zillion zippers zealous zygotes zaniest zapping zipping zoology zephyrs zigzags zooming zombies I'm sure there are more.
Zipping Along was created on 1953-09-19.
The zippers are on the back.