Slotted melt-blown die head
US4720252A · kind A · utility
34Cited by
22References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1986 |
| Grant date | Jan 19, 1988 |
| Priority date | — |
| Expiry date | Sep 9, 2006 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D4/025
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a melt-blowing die head having a die tip which, instead of a number of individual orifices, has a single continuous slot opening running its length. In addition the die tip is reinforced by means of aerodynamically shaped bosses in the fluid delivery channels which bear between the air plate and the exterior surface of the die tip. The die tip may also have reservoirs at either end in which debris may be collected when the slot is cleaned while the die head is in place on a melt-blowing machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.