



|
For fast set-up and production of plastic parts, especially large
parts in quantities from 500 to several thousand, thermoforming is
commonly selected over injection molding; tooling costs can be 90
percent lower and parts can be completed two- to three-times more
quickly.
Vacuum forming
and pressure forming both evacuate the sealed air space between
the heated plastic and mold; pressure forming adds air pressure
above the heated sheet to achieve a higher quality finish (sharp
edges, undercuts, and other close tolerance details).
KYDEX sheet is
well established as a premier thermoforming sheet offering numerous
processing advantages such as extreme formability, hot tear strength,
and the ability to maintain uniform wall thickness.
Typical applications
include:
- Equipment housings,
shrouds, enclosures
- Medical Devices
- Vents and grilles
- Interior components
of aircraft, mass transit vehicles, trucks, and marine vessels
- Commercial
and institutional furniture and seating components
- Hidden and
exposed parts such as chutes, braces, equipment guards
All conventional
thermoforming methods can be used to form parts from KYDEX sheet
products: positive-air pressure, drape, plug assist, vacuum snap-back,
twin sheet, and billow forming. Because KYDEX sheet is an especially
"forgiving" material, simple molds of wood, epoxy, urethane, and
aluminum are adequate, allowing for quick part turn-around time.
Typically, no pre-drying is required.
KYDEX sheet can
be thermoformed at temperatures between 325°F and 390°F (162°C -
198°C), realizing significant savings from shorter cycle times.
It also forms
to deep draws with low forces when heated to the upper range of
365°F to 390°F (185°C - 198°C), and unlike many thermoformable sheets,
has unusually high resistance to hot tearing. Crisp detail is achieved
and rejects are minimized, while maintaining uniform wall thicknesses.
KYDEX sheet can
be formed on all standard presses, and can be joined to itself or
to other materials by hot gas welding, hot blade welding, solvent
cementing, and mechanical fastening.
|