Airgap sleeve and manufacturing method thereof

摘要

The separating tube has an outer layer (4) made of an elastically prestressed material and an inner layer made of a sprayed plastic. The separating tube is manufactured from plastic in a partial manner. The prestressed material contains a fibrous material and a tissue which are embedded in a plastic material. The prestressed material has thermoplastic fibers, carbon fibers, glass fibers, metal fibers and aramid fiber. An independent claim is included for a method for manufacturing a separating tube of a drive motor for a pump assembly.