Method and machine for the manufacture of air pillows
US6789376B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2002 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Jun 6, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31D5/0073
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A machine for the manufacture of air-filled pillows includes a mounting (14. 114) on which a roll (16) of thin-walled plastic tube is mounted, and a drive system (50. 150) to draw the flat-wound tube from the supply and to feed the tube intermittently through the machine. The machine includes an injection means (70, 74: 170, 174) operative intermittently to inject air into the space between upper and lower walls (16a, 16b) of the tube, and a sealing system (60, 160) downstream of the injection means, and which is operative intermittently to seal the upper and lower walls of the tube together, particularly around the aperture through which air has been injected, and to provide a tear-line between the adjacent pillows. The machine includes a separator member (20, 120) which may be located manually within the tube upstream of the injection means, a system (30, 130) being provided to maintain the separator member in an operative position within the machine during advancement of the tube through the machine. The separator member (20, 120) is operative to retain the upper and lower walls (16a, 16b) of the tube apart, and in particular includes a rear housing (24, 124a), provided with an …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.