GENERAL DESCRIPTION

There are several building techniques for the industrial brushes. So we can have:

PUNCHED BRUSHES
STRIP BRUSHES
RING BRUSHES
TWISTED BRUSHES

The 'families' are very different from each other, both for the constitution of the product and for the use we can do of it.
However all the brushes have the common feature to be made up of BRISTLE (or WIRE if the material is metal). The bristle is mounted onto a backing. The ends of the bristles form the brushing surface. So the peculiar characteristic of the brush is to be made of a great number of elements that together behave like a single surface.
The bristle can be:

SYNTHETIC
METALLIC (ferrous and nonferrous)
NATURAL (animal and vegetable)

The choice of the bristle depends on the technical characteristics that the brush must have.
Table 0.1 shows the various kinds of bristle and the main uses for which they are mostly suitable.

TAB 0.1

BRISTLE	PARTICULAR USES
NYLON	FOOD - BENDING RESISTANT
ABRASIVE NYLON	DEBURRING, RUBBING, SATIN FINISHING OF ALL MATERIALS
POLYPROPYLENE	FOOD - HUMID ENVIRONMENT
POLYETHYLENE	ACID OR HUMID ENVIRONMENT, DELICATE SURFACES
PVC	ACID OR HUMID ENVIRONMENT, LIGHT WORKS
HIGH TENSILE STEEL	POLISHING AND SATIN FINISHING OF HARD METALS
STAINLESS STEEL	FOOD - HUMID OR CHEMICALLY ACTIVE ENVIRONMENT
HARDNED STEEL	MECHANICAL AND MANUAL SCRAPING
MILD STEEL	POLISHING AND SATIN FINISHING OF NOT HARD METALS
BRASS	POLISHING AND SATIN FINISHING OF NONFERROUS METALS
PHOSPHOR BRONZE	ACID ENVIRONMENT, METALLIC SURFACES
NICKEL SILVER	POLISHING OF NOBLE METALS
HORSE HAIR	HIGH TEMPERATURE - DELICATE SURFACES, DEEP ACTION
OX HAIR	HIGH TEMPERATURE - DELICATE SURFACES
PIG HAIR	HIGH TEMPERATURE - DEEP ACTION
GOAT HAIR	VERY DELICATE SURFACES
TAMPICO	HIGH TEMPERATURE - LIGHTLY ABRASIVE ACTION
BASSINA	HIGH TEMPERATURE - SCRAPING
PIASSAVA	HIGH TEMPERATURE - STRONG SCRAPING