Thermal Break Aluminum Profile Shredding Effect and Material Output

Thermal break aluminum profiles are common materials in the recycling of old aluminum doors, windows and construction profiles. Compared with clean aluminum profile scrap, this type of material is more complicated because it usually contains PA66 insulation strips. Some pieces may also have protective film, rubber strips, screws or other attachments on the surface.

For recycling plants, these long and irregular profiles are not always suitable for direct feeding into downstream equipment. A twin-shaft shredder is often used as the first step to reduce the material size. For this type of mixed aluminum scrap, a thermal break aluminum shredder can tear long window and door profiles into shorter chunks before further sorting or separation.

The material shown here is thermal break aluminum window and door profile with PA66 strip and protective film. Before shredding, the profiles were long, hollow and irregular in shape. After being processed by an aluminum profile shredder, the material was reduced into shorter aluminum chunks, which are more convenient for conveying, storage and downstream recycling.

Material Before Shredding

The raw material includes waste aluminum window and door profiles. These profiles usually have several features:

• Long aluminum profile pieces;

• Hollow or irregular profile structure;

• PA66 thermal insulation strip inside the profile;

• Protective film on part of the surface;

• Possible rubber, plastic or small metal attachments.

Because of this mixed structure, thermal break aluminum profile is different from clean aluminum scrap. The purpose of shredding is not only to reduce the length, but also to open the profile structure and make the aluminum and attached materials easier to handle in the next process.

Shredding Process

A twin-shaft shredder is suitable for this type of material. The two shafts rotate at low speed with high torque, pulling the aluminum profiles into the cutting chamber and tearing them by squeezing, shearing and ripping.

This working method is suitable for long aluminum profiles, aluminum window frames, light metal scrap and aluminum-plastic composite materials. As a type of metal shredder, the machine can handle irregular aluminum profiles and reduce them into chunk-shaped output material.

For thermal break aluminum profiles, the shredder can break the long pieces into smaller chunks and loosen the connection between the aluminum body and the PA66 strip. During shredding, the machine grips the long profiles steadily and pulls them into the chamber, helping keep the feeding process stable.

Shredding Result

After shredding, the long thermal break aluminum profiles were reduced into shorter and more manageable pieces. The hollow profile structure was opened, and the connection area between the aluminum and PA66 strip was damaged to some extent.

The final output is mainly chunk-shaped material. This output size is suitable for many recycling processes, especially when the customer needs pre-shredded material instead of fine crushed particles.

The shredding result shows:

• Long aluminum profiles are cut and torn into shorter pieces;

• Hollow profile sections are opened;

• PA66 insulation strips are partly exposed or loosened;

• Protective film is shredded together with the aluminum profile;

• The output material is easier to convey and sort;

• The shredded chunks can be sent to further crushing or separation equipment.

For different recycling requirements, the output size can be adjusted by choosing different shredder models, blade thicknesses and cutter structures. If the project requires larger chunks, a coarse shredding configuration can be used. If smaller final material is required, the shredder can work together with conveyor, magnetic separator, eddy current separator and other sorting equipment.

Required Equipment

The equipment can be selected according to the required output size and separation purpose. A simple shredding solution may only need a shredder and conveyors, while a complete scrap aluminum shredding line may include several machines for size reduction and material separation.

Main Equipment

• Twin-Shaft Shredder
  Used for pre-shredding long thermal break aluminum profiles into shorter chunks.

• Thermal Break Aluminum Shredder
  Suitable for aluminum window and door profiles with PA66 insulation strips, protective film and mixed attachments.

• Aluminum Profile Shredder
  Used for processing aluminum profiles, aluminum window frames, industrial aluminum scraps and aluminum offcuts.

• Metal Shredder
  Suitable for coarse shredding of light metal scrap, aluminum scrap and other recyclable metal materials.

Optional Equipment

• Feeding Conveyor
  Used to feed long aluminum profiles into the shredder continuously.

• Discharge Conveyor
  Used to transfer shredded aluminum chunks to the next processing area.

• Magnetic Separator
  Used to remove possible ferrous impurities such as screws, hinges or small steel parts.

• Eddy Current Separator
  Used for separating non-ferrous metals such as aluminum from mixed materials after shredding or crushing.

• Air Separator
  Used to separate light impurities such as protective film, plastic pieces and rubber strips.

• Dust Collection System
  Used to collect dust generated during shredding and sorting.

• Electrical Control System
  Used to control the operation of the whole line.

Suitable Materials

This shredding solution can be used for many kinds of aluminum profile recycling materials, including:

• Thermal break aluminum profiles;

• Waste aluminum doors and windows;

• Aluminum window frame scrap;

• Aluminum profiles with PA66 insulation strips;

• Aluminum profiles with protective film;

• Industrial aluminum profile waste;

• Aluminum offcuts and production scrap;

• Aluminum-plastic composite profile materials.

Processing Advantages

Using a thermal break aluminum shredder for this material has several practical advantages.

First, it can handle long and irregular materials. The profiles do not need to be cut into very short pieces before feeding, which helps reduce manual work.

Second, the low-speed and high-torque design gives the twin-shaft shredder strong biting force. It is suitable for pre-shredding aluminum profiles and other light metal materials with complex shapes.

Third, the shredded output is easier for downstream processing. After the material size is reduced, it can be conveyed, stored, sorted or further processed more efficiently.

Finally, the machine can be used as the first step of a complete scrap aluminum shredding line. According to the final material requirement, it can be connected with conveyors, magnetic separators, eddy current separators, air separators and dust collection systems.

Conclusion

Thermal break aluminum window and door profiles with PA66 strips and protective film are typical mixed aluminum recycling materials. They are long, irregular and contain both metal and non-metal parts, so pre-shredding is an important step before further processing.

A twin-shaft shredder can reduce these profiles into shorter chunk-shaped material, open the profile structure and make the material easier for sorting, separation and recycling. For recycling projects involving waste aluminum windows, aluminum profile scrap and thermal break aluminum materials, an aluminum profile shredder or complete scrap aluminum shredding line provides a practical front-end treatment solution.