Method for producing air ducts from plastic material, and mould used
US9327455B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 2, 2012 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Jan 29, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/246
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method and mold for producing air ducts (P) from plastic material, especially soft plastic material, with a hardness of between Shore 5 and Shore 65, of the type comprising a hollow main body (P1) provided with at least one protuberance or nipple (P2) that projects from the exterior wall of the main body (P1), the method comprising the steps of injection-molding at least one nipple (P2) from plastic material inside a first cavity (1) of a mold (M); interconnecting the first cavity (1) with a second cavity (3) arranged in the same mold (M) and located adjacent to said first cavity (1), in order to form a single volume; and blow-molding a hollow body from a moldable plastic-material parison inside the second cavity (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.