Crimper assembly for sealing overlapping portions of a sheet of packaging material
US6230781A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1997 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Sep 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1313
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A crimper assembly includes upper and lower crimper bars which are rotated relative to a sheet of packaging material. A pair of upper crimpers are secured to opposite sides of the upper crimper bar, while a pair of lower crimpers are secured to opposite sides of the lower crimper bars. Each of the upper crimpers includes a metallic base having an outwardly facing portion with an undulating cross sectional shape. A slot is formed in the outwardly facing portion of the upper crimper, and a cutting blade is retained therein. In a first embodiment, an insert is secured to the base of each of the upper crimpers. The insert includes a rigid shank having a lip portion extending therefrom. Portions of the outer surface of the shank are covered by a layer of a relatively resilient material. The layer is formed from a material which is suitable for compressing overlapping portions of the folded sheet of packaging material to form an intermeshing seal pattern. The outwardly facing portion of the layer of resilient material includes a longitudinally extending, outwardly facing resilient crimping surface with an undulating cross sectional shape. The lower crimpers are formed in a similar manner…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.