Introduction And Types Of Plastics In Plastic Molds

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Introduction And Types Of Plastics In Plastic Molds

Introduction and types of plastics in plastic molds

What is plastic?

Plastic is a synthetic material derived from petrochemicals. It is produced by heating crude oil or natural gas until they break down into smaller molecules called monomers. These monomers are then polymerized (or bonded together) to form long-chain polymers. When these chains are heated again, they melt into a liquid state. Once cooled, they solidify back to their original shape.

Polymerization occurs when two or more monomer units link together to form a polymer chain. This process requires energy input and occurs under high temperatures and pressure. The length of a polymer chain determines its properties and how it is processed into the final product.

Plastic is a versatile material with a wide variety of uses. Plastic has many advantages over other materials, including being lightweight, durable, and inexpensive. Plastics can be molded into almost any shape, making them ideal for many industrial applications.

type of plastic

injection molding

Polypropylene beads plastic particles on white background.

Plastic is an amazing material. It's versatile, durable, and easy to use. It can be used for almost anything, from toys to medical equipment. There are so many types of plastic, it's easy to find the best one for your needs.

Here is a brief overview of some of the most common plastic types:

Polyethylene (PE)

This is one of the most commonly used types of plastic in the industry today. PE is a tough material with excellent chemical resistance. It's also relatively inexpensive compared to other types of plastic. This makes it ideal for many industrial applications, such as shipping containers or packaging for food such as milk cans or juice bottles.

Polypropylene (PP)

This is an excellent choice for items that will be used in extreme conditions. It is impact-resistant, UV stable has good chemical resistance, and can withstand temperatures up to 118 degrees Fahrenheit. It also has low moisture absorption and is often used to make molds from other materials such as silicone.


The most common type of hard plastic is acrylonitrile butadiene styrene (ABS). ABS is used in everything from auto parts to children's toys because it's strong enough for heavy-duty applications, yet flexible enough for many uses that require flexibility. It can be transparent or opaque, depending on how it's shaded or finished.

acrylic fiber

Acrylic resin is one of the most common plastics used to make custom-molded plastics. Acrylic is strong, durable, and clear with a high gloss finish. They can be made in a variety of colors but are not suitable for very large applications or outdoor use as they do not hold up well in sunlight or weather conditions. Acrylics can also be easily scratched if not handled properly.

Acrylic is made of polymethyl methacrylate or PMMA for short. This plastic has very low impact resistance compared to other plastics, but has very good light transmission properties - it's often used to make lenses because it absorbs very little light but still allows you to see clearly.


Polycarbonate is a high-strength plastic used in many industries for a variety of items such as bulletproof glass, car lights,  and even eyeglass frames! It is lightweight, impact-resistant, and has excellent scratch and dent resistance. Polycarbonate can also be colored by adding colorants (such as tinting) during the manufacturing process. This makes them ideal for making custom-molded plastics since coloring them after production can be expensive due to their transparency.


Nylon is a popular choice for making custom-molded products because it is strong, flexible, and resistant to chemicals, UV light, and heat. It also has a high melting temperature (up to 300 degrees Fahrenheit), meaning items can be safely placed in boiling water or in the oven without damaging the mold or product.

Nylon is strong, flexible, and durable - perfect for everything from clothing to automotive! Nylon has been around since the 1930s, but it was first commercially used by DuPont during World War II in 1942 as a replacement for stockings!


PVC is one of the most popular plastics because of its versatility. It is used in many products that require high strength, flexibility,  and durabilities, such as pipes and cables. PVC is also resistant to liquid and gaseous chemicals, making it ideal for products such as medical supplies, food packaging, and flooring.