Method of using zoned hot air knife
US6066221A · kind A · utility
20Cited by
54References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1997 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Jun 17, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2310/0445
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A zoned hot air knife assembly and process include a plurality of discrete, spaced apart air knives is useful for the inter-filament bonding of nonwoven webs, for the thermal bonding of laminates including nonwoven webs, and other applications. The zoned hot air knife assembly and process facilitate the manufacture of low bond area, low density nonwoven webs and laminates having high structural integrity. The zoned hot air knife also reduces the amount of heated air and, thus, energy required for the production of thermally bonded nonwoven webs and laminates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.