Apparatus for manufacturing a disposable vacuum cleaner bag
US5468330A · kind A · utility
2Cited by
3References
4Claims
0Family size
Inventors
Key dates
| Filing date | Jul 1, 1994 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | Jul 1, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to an apparatus and method of manufacturing vacuum cleaner bags with a unique tri-lock top and bottom seal. The paper end of at the end of the open bag length is sealed onto itself with seam-paste glue three times providing an extra strong seam to accommodate the ever increasing air pressure created by today's powerful cleaners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.