Rotational Molding vs. Other Molding
Rotational molding offers many benefits over other types of
molding such as injection molding, blow molding and
Greater design flexibility
Rotationally molded pieces can be designed and manufactured to
fit just about any space available. Often parts that are
assembled from multiple pieces can be consolidated into one
rotomolded part. That improves design possibilities. And the
fewer parts, the fewer chances for part failure.
Dramatic cost savings
Because there is no interior core to manufacture, tooling
for rotational molding parts is less expensive than tooling
for other types of molding. When compared to most durable
metals, plastics are substantially more cost effective.
Consistent wall thickness
Traditionally, metal components are weakest at the corners
- the exact areas where the parts endure the most stress. With
injection molding or blow molding, it's difficult to achieve
total consistency in wall thickness. With rotomolding, the
constant rotation allows the resin to coat every surface
A number of factors contribute to the superior strength of
rotomolded parts: durable new plastics, consistent wall
thicknesses, one-part construction and corrosion-resistance.
Shorter production times
We can usually design the piece, tool it and begin production
in fewer than 3 months. Compare that to the minimum lead time
of 6 months for injection molding, and it's easy to see that
rotomolding brings your finished product to market
Easier to modify
Because of the relative simplicity of the tooling, minor
alterations can be made to an existing mold to accommodate
your changing production needs.
Ability to do small runs
With less expensive tooling, rotomolding makes it possible to
do smaller runs on products. In fact, many of our customers
find it economical to do runs as small as 10 pieces.
Benefits of Plastic
Look around and see all the plastic parts you see in use every
day: car components, juice bottles, football helmets, even the
computer you're currently working on. Plastic technology has
advanced dramatically in the past few decades, creating
materials that have the following benefits:
Simply put, plastic cannot rust. Even stainless steel products
are susceptible to rust in welded spots.
Plastic can withstand various chemical components, making
it a perfect solution for tanks and other containers. Plastics
can also be engineered to be static-resistant, fire-resistant
Plastic parts are extremely impact resistant and do not
dent. Parts can also be reinforced with inserts in high-stress
It takes less fuel to operate equipment with plastic parts
because plastic is lighter weight than metal. Plastic is
typically less expensive than metal. And because rotomolding
easily allows for one-piece construction, assembly times - and
therefore assembly costs - are reduced.
With rotomolding, a wide range of colors is available.
Because the color is solid throughout the piece, there's no
unsightly chipping of color. Rotomolding also gives you the
option of including a color logo right on the molded piece,
which means your logo cannot peel or flake away. And because
rotomolding allows greater control over the design, you can
address the style of the part along with its function.
Rotomolding plastic eliminates sharp corners and burrs and
results in a smooth, seamless product. This reduces injury
risks for operators. And because rotomolding allows more
control over the design, more ergonomic parts can be created.
It's a known fact that the more components there are in a
part, the greater the risk for breakdowns and problems. Using
plastic means you can form one part rather than welding
together various metal pieces, resulting in greater durability
and a longer-lasting product.