| 摘要 |
The disclosure pertains to an apparatus to shape the interior surface of a pipe made of thermoplastic material, where the apparatus includes a shaping component. the surface of this shaping component can have at least one notch and at least one smooth continuous surface area. The shaping component can have at least partially a cylindrical shape and/or at least partially a conical shape. The notch or notches can run spirally or closed and can either extend over the entire length of the shaping component or can only be located along a specific length of the shaping component. The notch or notches can be connected to a pressure system to produce vacuum and/or positive pressure in the notch. This can facilitate enhanced feeding and gliding of the interior surface of the pipe at the shaping component. The disclosure also pertains to a system to manufacture pipes made of thermoplastic material, where the system includes an above apparatus to shape the interior surface of a pipe made of thermoplastic material.
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