Melting Point of Plastics | The Basic Guide

Did you know that different plastics have different melting points? It’s true! In this comprehensive guide, we will discuss the melting point of various types of plastic. We’ll also provide tips on how to safely melt plastic and recycle it. So, whether you’re a business owner looking to recycle old plastic products, or just someone who wants to know more about the science behind melting plastics, this guide is for you!

What is Melting Point of Plastics?

blow molding materials

The melting point of a plastic is the temperature at which it changes from a solid state to a liquid. The higher the melting point, the more resistant the plastic is to heat and other environmental factors. Different types of plastics have different melting points; some can withstand temperatures up to 300°F (148°C), while others may melt at much lower temperatures.

What is Mold temperature of Plastics?

plastic materials

Mold temperature of plastics is the temperature at which plastic is injected into a mold to form desired products. The mold temperature of plastic affects both the quality and performance of a molded product. Different types of plastics have different optimal mold temperatures, so it’s important to know what kind of plastic is being used before beginning a project.

Common Types of Plastic with Their Melting Points and Mold Temperature

Materials Melt Temperature Mold Temperature
ABS 190-270℃ 50-90℃
ABS/PC 245-265℃ 70-110℃
Acetal 180-210℃ 80–100℃
Acrylic 220-250℃ 79-107℃
HDPE 210-270℃ 30-70℃
LDPE 180-240 ℃ 50-70℃
Nylon 6 230-290℃ 70-120℃
Nylon 6 (30% GF) 250-290℃ 70-120℃
Nylon 6/6 270-300℃ 70-120℃
Nylon 6/6 (33% GF) 280-300℃ 60-130℃
Nylon 11 220-250℃ 70-120℃
NYLON 12 190-200℃ 70-120℃
PEEK 350-390℃ 120-160℃
PC 280-320℃ 85-120℃
PBT 240-275℃ 60-90℃
PET 260-280℃ 20-30℃
PEI 340–360℃ 20-30℃
PPA 325℃ 60-130℃
Polypropylene Copolymer 200-280℃ 20-30℃
PP (30% TALC-FILLED) 240-290℃ 30-50℃
PP (30% GF) 250-290℃ 40-80℃
PS 170-280℃ 30-60℃
PS (30% GF) 250-290℃ 40-80℃
PVC 170-190℃ 20-40℃
TPE 260-320℃ 40-70℃

Tips on How to Safely Melt Plastic

Tips on How to Safely Melt Plastic

When melting plastic, safety is of utmost importance. Here are some tips on how to safely melt different types of plastic:

Make sure the area you’re working in is well ventilated

Wear protective eyewear and gloves

Use a double boiler to melt most plastics

Keep the temperature low when melting plastic to avoid toxic fumes

Allow melted plastic to cool before handling it.

Recycling Plastic: Why it’s Important

Recycling Plastic

Recycling plastic is important for both environmental and economic reasons. By recycling plastic, businesses can save money on the cost of buying new materials, as well as reduce their carbon footprint. Recycling also helps to conserve resources and prevent pollution from entering our environment.


In this comprehensive guide, we’ve discussed the melting point of various types of plastic, mold temperature for different plastics, and tips on how to safely melt plastic. We’ve also highlighted why it’s important to recycle plastic. By utilizing this knowledge, you can ensure that your projects involving melting and recycling plastic are successful!

If you’re interested in learning more about melting and recycling plastic, contact an expert to get the answers you need. Thanks for reading!


Gavin Leo is a technical writer at Aria with 8 years of experience in Engineering, He proficient in machining characteristics and surface finish process of various materials. and participated in the development of more than 100complex injection molding and CNC machining projects. He is passionate about sharing his knowledge and experience.