Nylon Plastic (PA)
Benefits of Nylon (Polyamide) Plastic Injection Molding
Nylon plastic (PA) is a synthetic thermoplastic polymer commonly used in injection molding applications. It’s a versatile, durable, flexible material often used to as a more affordable alternative other materials like silk, rubber, and latex. Some other benefits of nylon polyamide include:
- High melting temperature
- Low friction
- High tensile strength
- Resistance to chemicals and abrasions
The chemical composition of Nylon gives it a high melting point, making it an excellent alternative to metal components in high-temperature environments, like car engines and other types of high-friction machinery. Like other thermoplastic materials, nylon plastic turns to liquid at its melting point rather than burning, meaning it can be melted down and remolded or recycled. Nylon material also doesn’t heat up easily when used in high friction applications.
Nylon is usually combined with other materials to improve various qualities. For example, filling nylon with glass fibers increases its tensile strength while also making it less flexible and more brittle.
With plastic injection molding, Retlaw casts glass-reinforced nylon plastic into the components you need for your industry.
Properties of Nylon Plastic (PA):
|Name||Nylon (PA), or Nylon Polyamide|
|Melting Point (°C)||~220°C|
|Tensile Strength||~11,000 psi|
|Impact Strength||~0.6 fit-lb/in notched Izod|
|Hardness Level (Rockwell)||R115|
|Flexural Modulus||~16,000 psi|
Challenges with Molding Nylon Plastic
As with any plastic material, there are some common issues that could potentially arise in the nylon thermoplastic molding process. Some of the problems that could occur include:
- Gassing – excess gas can cause defects in the nylon plastic, including a poor chalky appearance. Higher mold temperatures and poor ventilation can lead to gassing in nylon, but gassing can be deterred when you find the right temperature and allow gas to escape through proper venting during the molding process.
- Moisture - Poor drying can cause gassing and other potential scrap-producing defects in nylon. Nylon plastic is the most hygroscopic, meaning it easily takes in excess moisture when not properly drained. Always make sure the loader line and loader receptacle have been cleared of material to allow the barrel time to heat soak.
- Shrinkage – Nylon is a plastic material prone to shrinkage during the molding process. Nylon shrinkage can result in reduced strength, poor color, and warped edges, but properly controlling the heat and molding temperatures can help reduce shrinkage.
Uses for Nylon Plastics in Everyday Life
Nylon is an extremely versatile plastic material. Along with industrial and mechanical uses, Nylon is commonly used for a variety of products, including:
With plastic injection molding, nylon polyamide can be cast into gears, bushings, plastic bearings, and other components for mechanical equipment like engines.
Nylon Plastic (PA) Injection Molding from Retlaw Industries
If you need components with a high melting point and low friction, as well as resistance to chemicals and abrasion, nylon plastic is an excellent choice. Contact Retlaw Industries to design and manufacture your OEM components, such as:
Retlaw’s professional machinists, assemblers, and quality control specialists will ensure your injection molded Nylon products are made to your exact specifications. Contact us today to get a quote on our thermoplastic parts for your particular industry.