Compression Moulding Presses - How it works
Compression molding is a high pressure
application for molding complex, high strength fiberglass reinforcements.
This process involves thermosetting resins in a partially cured stage. The
resins could be either granules, putty like masses or preforms. The mold is
closed and pressure is applied so that the molding material spread into the
mold areas. During the entire process, the heat and the pressure are
maintained until the curing of molding material.
Compression molding requires precise pressure, accurate position and
controlled speed throughout the working stroke. Hydraulic technology based
compression moulding presses provide a constant force over a large area.
They can work under pressure for any length of time with varying ram speeds,
which are precisely characteristics required compression molding press.
Compression molding is applied to mold large and highly intricate parts for
a variety of industries. Through this method, advanced composite
thermoplastics can also be molded. Unlike injection molding, the compression
moulding produces fewer knit lines as well as ensures lesser fiber length
degradation. Most applications involving compression molding require large
bed sizes and comparatively low tonnage. The ability to easily customize a
hydraulic based compression moulding press assures that the purchaser need
only purchase the press capacity they require, versus whatever is standard
with a larger bed size.