 The
Pultrusion Method
Our doors are
manufactured by a machine process that pulls resin-saturated glass fibers
continuously through a heated die forming a monolithic polymer bond around
a urethane foam core.
According to the
EPA, polymers are large organic molecules (molecular weight ~104-107)
that consist of small repeating molecules.
Polymers used in the plastic resin and manmade
fiber industries either occur naturally, such as cellulose, or are formed
during polymerization when bond-forming reactions cause small repeating
molecules to join together. Polymers are typically made from one type of
simple chemical unit, or monomer.
Many grades of different polymers are produced,
each with different physical characteristics such as strength.
Polymerization is the major process involved in the synthesis of plastic
resins and manmade fibers. Temperature and pressure have a profound effect
on polymerization processes and may be varied in order to control the end
properties of the polymer produced.
Our one-piece
pultruded polymer door panel produced by our proprietary technology is
free of side seams,
metal fasteners and metal reinforcing plates. Since there are no side seams delamination is impossible.
Top cap and bottom cap are FRP
profiles, chemically welded to the panel structure and fully sealed. Surface skins are 1/8"
thick and consist of a combination of continuous strand and knit mat.
Integral stiles are 9/16"
thick solid pultruded fiberglass along both sides the entire length of the panel
making it possible to prep for butt hinges or a continuous hinge at any
location along the stile.
 The
commercial and industrial features, advantages and benefits of polymers
first came to light in the 1800s when people experimented with ways to
produce everyday objects out of alternative materials. The first plastic,
was developed in 1851 when hard rubber, or ebonite, was synthesized. This
was the first material that involved a distinct chemical modification of a
natural material. The first manmade fibers commercially manufactured in
the U.S. were the cellulosics, led by rayon in 1910 and acetate in 1924.
Since then, most technological advances in manmade fibers have occurred in
synthetics, which now make up almost all of the U.S. production of manmade
fibers.
Specific product formulations and
manufacturing parameters are confidential since our competitiveness in
today’s marketplace depends on our ability to produce products which have
unique physical characteristics such as strength, durability, toughness,
resistance to abrasive or corrosive forces and flexibility. For more
information about the features, advantages and benefits of our exclusive
FRP door panel manufacturing process, we welcome your call: 870-448-4406. |
