Gelmen Thermal Break Machine

  The opening tooth is to use the opening machine to roll out the tooth mark on the aluminum profile to wear the heat insulation strip notch, the purpose is to increase the roughness of the groove through the strip so as to improve the friction force of the aluminum and the heat insulation strip combined together, also called shear force, which is equivalent to the "tooth" biting the heat insulation strip.

The depth of the "teeth" in the process of cutting is the key.  Look, this is a picture of the cutter.

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