Melt-blowing die tip with integral tie bars
US4486161A · kind A · utility
22Cited by
16References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 1983 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | May 12, 2003 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D4/025
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a melt blowing die tip having a generally triangular nose portion with a knife-edge forming the extremity of the die tip, a channel extending lengthwise of the die tip, a row of small openings extending from the channel to the knife-edge extremity of the die tips, and a plurality of tie bars of generally elliptical cross section integral with the die tip and bridging the channel to strengthen the die tip to withstand the internal, outwardly directed pressure exerted by molten polymer forced into the channel from the die body and flowing to be extruded through the die openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.