- Look up
preform in Wiktionary, the free dictionary.
Preform may
refer to:
Preform, a
piece of gl**** used to draw an
optical fiber Preform, a
piece of...
-
Rectangular frame shaped preforms are
often required for the
construction of
electronic packages while washer shaped brazing preforms are
typically utilized...
- large-diameter
preform with a
carefully controlled refractive index profile, and then
pulling the
preform to form the long, thin
optical fiber. The
preform is commonly...
-
specialising in blow-moulded
bottles and caps, injection-moulded parts,
preforms and tubes. It is one of the
largest producers of
rigid plastic packaging...
- Three-dimensional
composites use
fiber preforms constructed from
yarns or tows
arranged into
complex three-dimensional structures.
These can be created...
-
final form of the tool, but is not complete.
Preforms might also be
transported or traded. Typically, a
preform is the
shaped remnant of a
lithic core. Larger...
- end.
These preforms are packaged, and fed
later (after cooling) into a
reheat stretch blow
molding machine. In the ISBM process, the
preforms are heated...
- fibre-reinforced polymers.
Fibre preforms are how the
fibres are
manufactured before being bonded to the matrix.
Fibre preforms are
often manufactured in sheets...
- Many
methods are used to
manufacture the
solder preform,
stamping being the most common. The
solder preform may
include the
solder flux
needed for the soldering...
- have to
contain smooth spherical particles,
preforms are
ideally made of
round wire.
Problems with
preforms can be also
sidestepped by
depositing the solder...
