Method for production of centrifugal release bag
US4124965A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1977 |
| Grant date | Nov 14, 1978 |
| Priority date | — |
| Expiry date | Jul 5, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B9/087
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for making fluid release bags having a particular use to disperse reagents into a reaction chamber during centrifugation and as burst bags for manually dispersing reagents. The bags are made by scoring a flexible film material with a laser to form a uniform and predetermined linear depression along approximately the entire length of the film. The film is folded along the linear depression such that there are two sides of approximately equal dimensions and such that the bottom edge of the folded film is the laser scored linear depression. Portions of the two sides of the film are sealed together at predetermined intervals to form a continuous film of attached bags having one open end. A substance is injected into each bag through the open end. The open end edges are sealed together, and the bags are separated from one another into individual bags or groups of bags by suitable cutting means. These bags can then be used individually or in centrifuges and will suddenly and fully rupture at a predetermined level of pressure or centrifugal force which depends on the depth of the linear depression scored by the laser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.