Process for the production of a container or tube fitted with a pump
US4931245A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | May 4, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/41
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a process for the production of a container (46) or tube (45) fitted with a pump (1) for the distribution of a liquid or creamy product, said pump (1) bearing an annular fixing rim (2), the periphery of which is of plastics material at least at its surface wherein: (a) the pump (1) is disposed between tools which sealingly clamp the rim (2) and contain the pump (1) with clearances limiting the rise in temperature thereof in the moulding operation; (b) the body or the skirt (19) is disposed around a tool, the upper end thereof projecting beyond same; (c) the assembly of tools is disposed in such a way as to form an annular moulding space which is fed by way of a plurality of injection ducts and connects said annular rim (2) to the projecting end of said body or skirt (19); and (d) molten plastics material is injected into said annular moulding space by way of said ducts, the assembly is left to cool and the resulting tube (25) is removed from the mould. The invention also concerns the assembly of die tools used and the resulting container or tube (45), the corresponding pump (1) preferably being a pump without air return. Such containers or tubes (45) are used…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.