A bristle is a stiff
hair
Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals.
The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and ...
or
feather
Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in vertebrates and an exa ...
(natural or artificial), either on an animal, such as a pig, a plant, or on a tool such as a
brush or
broom.
Synthetic types

Synthetic materials such as
nylon
Nylon is a family of synthetic polymers characterised by amide linkages, typically connecting aliphatic or Polyamide#Classification, semi-aromatic groups.
Nylons are generally brownish in color and can possess a soft texture, with some varieti ...
are also used to make bristles in items such as brooms and sweepers. Bristles are often used to make
brushes
A brush is a common tool with bristles, wire or other filaments. It generally consists of a handle or block to which filaments are affixed in either a parallel or perpendicular orientation, depending on the way the brush is to be gripped during u ...
for cleaning purposes, as they are strongly abrasive; common examples include the
toothbrush and
toilet brush. The bristle brush and the scrub brush are common household cleaning tools, often used to remove dirt or grease from pots and pans. Bristles are also used on brushes other than for cleaning, notably paintbrushes.
Bristles are distinguished as ''
flagged'' (split, bushy ends) or ''unflagged;'' these are also known as ''
flocked'' or ''unflocked'' bristles. In cleaning applications, flagged bristles are suited for dry cleaning (due to picking up dust better than unflagged), and unflagged suited for wet cleaning (due to flagged ends becoming dirty and matted when wet). In painting, flagged bristles yield more even application.
[''Old-House Journal,'' May 1986]
p. 171
/ref>
Natural types
Bristles are found on pig breeds, instead of fur. Because the density is less than with fur, pigs are vulnerable to sunburn
Sunburn is a form of radiation burn that affects living tissue, such as skin, that results from an overexposure to ultraviolet (UV) radiation, usually from the Sun. Common symptoms in humans and other animals include red or reddish skin tha ...
. One breed, the Tamworth pig, is endowed with a very dense bristle structure such that sunburn damage to skin is minimized. Animals named for their bristles include bristlebirds, the bristle-thighed curlew, the bristle-spined porcupine, and the Trinity bristle snail.
Bristles also anchor worms to the soil to help them move.
See also
* Paintbrush
* Bristle sensilla
Bristle sensilla are a class of mechanoreceptors found in insects and other arthropods that respond to mechanical stimuli generated by the external world. As a result, they are considered exteroceptors. Bristle sensilla can be divided into two m ...
- tactile hairs on insects
References
External links
Types of Bristle Materials Used for Brushes
{{Commons category, Bristle
Animal hair