The end product determines the type of plastic needed to make the mold.
There are different types of plastic
materials used for plastics
injection molding by mold manufacturers, and each of these types has
different features.
The type that a mold manufacturing
company will use depends on the type of the finished product, the requirements,
and its design. Here are the most commonly used and popular materials used for plastics
injection molding.
Polymethyl Methacrylate Plastics Injection Molding
Polymethyl Methacrylate, expressed as PMMA and also referred to as Acrylic more commonly, is quite popular among regular and custom mold makers. It is mainly due to the inherent properties of this clear thermoplastic, such as:
- High
tensile strength
- Lightweight
- UV
resistance
- Shatter
resistance
- Optical
clarity and
- High
tolerance.
Available in general, sign grade, and
marine grade, different applications of acrylic in injection molding include
windows, bathroom enclosures, greenhouses, lighting, solar panels,
architectural components, and more.
Acrylonitrile Butadiene Styrene
Commonly known as ABS, the most
significant property of this plastic material type is its low melting point.
This makes it very easy for manufacturers to use it for cheap plastic
injection molding and other types of molds.
Different textures and colorants can
be used on this opaque polymer material for a better surface finish. It is
tough, even at low temperatures, due to butadiene, and shiny and attractive due
to the styrene content.
Suitable for molded parts, this
material is strong and impact-resistant, making it suitable for injection
molding for different plastic parts, such as:
- Keyboard
keys
- Plates
of electrical wall outlets
- Protective
headgear
- Wheel
covers
- Industrial
fittings
- Sports
equipment and
- Consumer goods.
Nylon Polyamide
This is a synthetic polyamide,
suitable to use for making molds due to its significant properties, such as:
- Strength
- Heat
resistance
- Abrasion
resistance
- Fatigue
resistance and
- Impact
resistance.
There are four different grades of
Nylon PA, and the inherent properties mentioned above make it best suited for cheap
plastic injection molding. These molds can be used for making a wide
range of parts, which include and are not restricted to the following:
- Gears
- Casings
- Fixtures
- Bushings
- Jigs
- Bearings
- Slides
- Threaded
inserts
- Snap-fit
closures and
- Kinetic parts.
Conclusion
Over the years, there has been a
steady rise in using injection molding for making different industrial,
automotive, and other parts. This requires sturdy molds that can sustain the
stress and strain of using them multiple times regularly.
The type of plastic used to make the
molds determines its utility, and so the custom mold makers need to
choose a suitable material.
Want to know more about molds and
plastic used in their making? Call or email us, and our experts will gladly
answer your queries.
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