Process for heat treatment of nonwovens
US4812284A · kind A · utility
12Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1986 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Nov 21, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1023
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The process serves essentially for the thermal bonding of lightweight nonwovens. For this purpose, the nonwoven is heated up by means of air penetration on a sieve drum of a flow dryer to a high percentage of the bonding temperature, and immediately thereafter is embossed with internally heated rolls in the squeeze roll nip of a calender. The apparatus provided for conducting the process consists of a sieve drum device wherein the embossing calender is arranged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.