Sterilization of packaging material
US4424188A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1981 |
| Grant date | Jan 3, 1984 |
| Priority date | — |
| Expiry date | Dec 31, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B55/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for sterilizing packaging material, the packaging material being employed subsequent to its sterilization for the aseptic packaging of foodstuffs. The method includes the steps of (1) first subjecting the packaging material to ultrasonic vibrations through a liquid medium, and (2) then subjecting the packaging material to ultraviolet radiation. The bactericidal effect of steps (1) and (2) combined together as a sequence in the order recited is greater than if practiced in the reverse order. The process of this invention can be applied to a moving web of packaging material. The moving web, after its sterilization treatment, can be fed through known machinery for forming, filling, and sealing of aseptic packages for foodstuffs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.