Gas charging apparatus for a bag equipped with gas compartment portion
US9919822B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2014 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Jun 17, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7128
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for charging the gas compartment portion of a bag (1) in which incisions (9) are formed in gas introduction section (6a) of the gas compartment portion (6). A pair of gas injection nozzles (23, 24) are disposed so as to be on the opposite sides of the bag and reciprocate between its standby and advanced positions, so that in the advanced position, the discharge outlets (23a, 24a) of the gas injection nozzles are aligned with the gas introduction section on both sides, and compressed gas is injected into the gas introduction section through the incisions. A small gap (L) is provided between the discharge outlets of the gas injection nozzles when they are in the advanced position. As the gas is injected, film sheets of the expanded gas introduction section closely adhere to the discharge outlets, so that the gas injection state becomes stable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.