[afc]

Twisting:
Basically, during the twisting process, one or multiple fibers will be turned in one direction. E.g. 120 turns / meter (around 3 turns/ inch). Typically, if you plan on twisting two fibers together, you first turn them individually in one direction and later you put them together by twisting them in the opposite direction.
One direction is called S twist the opposite direction is called Z twist.
After the first twist, the fiber has a “recall-effect”; this means, it wants to turn back into its original state. However, when putting it together with one or more strands, by twisting it in the opposite direction, the “recall-effect” disappears.
The quality is determined by how good the recall-effect disappeared and how much the friction during the twisting process effected the overall appearance of the twisted fiber.
The better the quality the less problems will arise during the following textile processes, such as weaving and then coating as an example.

When twisting Glass- or Basalt-fibers two twisting techniques are implemented:
1. Ring Twisting

2. Direct Cabling
During the Ring Twisting process, two or more filaments wind truly around each other. This results in a very homogeneous appearance.
During the Direct Cabling process, one fiber is spun around another. This means one strand remains fairly straight while the other wraps itself around the other.
When it comes to tensile strength, the straight fiber Is basically holding all the tension, the second fiber does not really contribute in that regard.
While Ring Twisting allows for much larger quantities of filaments to be twisted together, the direct cabling process only allows for two filaments to be twisted together.
Attached a picture of Direct Cabling Twisting machine.

• This discussion was modified 5 days, 23 hours ago by  afc.

Direct-cabling-machine-1-180x180-1.jpg 9 KB Image File - Click to view

Options

• Copy Download Link

Discussion