Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Idioms, Wikipedia.
Related to Doubling: Doubling time, doubling up
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the process by which several uniformly drawn threads are combined and then wound in parallel on a bobbin without twisting. Doubling is an auxiliary process in textile production, used to prepare thread for processing on twisters. In doubling, the thread is also cleaned of lint and waste, and the weak and overly thick sections are removed. The thread is cross wound on a cylindrical bobbin, which makes further processing easier.

Doubling is carried out on a doubler. The thread is wound off feed packages, the number of which equals the number of threads to be doubled, and passes over a guide rod. It then passes through a control and cleaning device, which consists of a tension device and two metal plates or blades that form a slit. The width of the slit selected depends on the nominal diameter of the thread; thus, thick sections of thread do not pass through the slit and break the thread. The tension applied causes the thread to break at weak points. The winding speed reaches 500 m/min.

In the production of twisted silk and chemical filaments, doubling is often accompanied by twisting and is carried out on a doubling-and-twisting frame. Spinning-and-twisting frames have been developed that combine the processes of spinning, doubling, twisting, and winding.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
What if Dad offered a tripling scheme instead of doubling (starting with $1 in January)?
In Viet Nam, the doubling time increased over the period that the epidemic was being controled (Figure 3).
King's findings, however, restrain him from doubling Boy and French Queen in Henry V or Weird Sister with Gentlewoman in Macbeth.