High efficiency particulate air rated vacuum bag media and an associated method of production
US7115151B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2004 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Oct 15, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/668
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A vacuum bag media and associated method of production, which includes a first layer that includes an expanded polytetrafluoroethylene membrane and at least one second layer that includes a first component having a first melting point and a second component having a second melting point that is higher than the first melting point, wherein the first layer is attached to the at least one second layer. The second layer can include cellulose material, spunbond, nonwoven fabric, and a thermal bond, nonwoven fabric. Attachment of the first layer of material to the at least one second layer of material can occur through thermobonding, e.g., heated gas, infrared heat and heated calender rolls. The application of adhesives and the use of ultrasonic energy can also bond the layers together. Approximately five percent (5%) to fifty percent (50%) of the first component can be selectively melted for superior airflow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.