Temperature Ranges for Different Plastic Materials

Plastic products have become an essential part of our lives. It is used in different applications ranging from packaging and automotive to construction and building materials. A crucial feature to consider is the melting point of plastic that you are working with.

The melting point is the plastic material temperature at which the plastic material changes from solid to liquid state. The intermolecular forces at this temperature hold the polymer chains together to enable them to move freely. This softens the plastic and turns it into a liquid state.

Plastic Material Temperature Ranges


The particular melting point varies and depends on different plastic material types and their composition. Different types of plastic material have diverse chemical structures and properties that lead to various melting points. For instance, some materials have a low melting point, an average of nearly 70 degrees Celsius, while others have high melting points, reaching nearly 200 degrees Celsius.

Plastic Material Temperature Ranges

MATERIAL 

MELT TEMPERATURE (℃)

PE

105 to 135

PC 

220 to 275

ABS

190 to 270

SAN

200 to  260

PP

200 to 280 

PP

130 to 171

HDPE

210 to 270

LDPE

180 to 240

TPE

260 to 320


The melting point of plastic helps to determine at what temperature the plastic can be processed, shaped, and molded. With the help of the melting point, the manufacturers can use different methods like blow molding, extrusion, and injection molding to give the plastic the desired shape and form. 

Additionally, it is also important to ensure the thermal stability and performance of the final products. Going above the melting point can lead to deformation and loss of mechanical properties. In contrast, if the plastic is not appropriately heated to its melting point during production, it does not allow the needed flowability for shaping or molding to give the desired form and shape.

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