Method for the manufacture of plastic insulators with screens for indoor and outdoor use
AssigneeSiemens Aktiengesellschaft
InventorGeorg Herold
Life of this patent
Estimating the term…
Abstract
Plastic insulators with protective screens for indoor and outdoor use, especially support and suspension insulators are manufactured by injection molding or transfer molding, using granulated or paste-like molding compounds (rigid or flexible adjustment) on the basis of unsaturated polyester or epoxy resins, heterocyclic polyurethane resins, polypropylene (PP), ethylene-propylene monomer rubber (EPM), ethylene-propylene-diene monomer rubber (EPDM), synthetic rubber, silicone rubber and others. The fabrication can be carried out through one-part or multiple-part injection.
Claims11
A method for manufacturing plastic insulators with screens for indoor and outdoor use, comprising providing a first-fabricated screen part within a mold and injection-molding or transfer molding onto said part one or more injection-moldable, electrically high quality, hydrophobic, leakage-current-resistant, erosion and temperature resistant molding compounds having a high notch impact strength, said injection molding comprising plasticizing said molding compound under heat and injecting said compound into the mold under pressure, said molding compound comprising a thermosetting plastic, thermoplastic or elastomeric material comprising from 0 to 60% by weight thereof of filler materials.
Dependencies are inferred from the claim text.