Apparatus for filling and sealing liquid-phased extruded containers and method
US5471821A · kind A · utility
Inventor
Key dates
| Filing date | Sep 2, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Sep 2, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B9/24
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for filling liquid-phased extruded containers comprises injecting the extruded material into a die head forming a tubular shape. The die head is hollow, or bored, from its back end to its front where the extruded material egresses to form the extrudate (pre-container) tube shape. A means for introducing a separable insert through the die head bore permits the insert to be encased within the tube while the thermoplastic material is still in its liquid or molten phase. Pinch rollers seal the tube at ends opposite that of the insert while avoiding the insert, while the line of sealed containers is pulled by gear rollers through a water cooling bath. A die punch stamp cuts the pinched, or sealed, sections of the containers separating them into individual, filled, singular units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.