Process for forming hydratable, flexible refrigement media
US5628845A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Sep 28, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1727
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention utilizes a controlled pressure application system to insure that the proper pressure is applied in a lamination of permeable and semi-permeable roll mounted sheets into a cellular sheet structure. The present invention uses a pressure roller mounted on a carriage which is movable horizontally radially of a heated roll by a controllable linear actuator such that variable and closely controlled pressure may be applied to a web passing between the heated roll and the carriage mounted pressure roller. Additionally, the present invention uses a precisely controllable fluid heated pressure roller and a precisely controllable fluid cooled cooling roller acting as a heat sink for the pressure roller to maintain a precise temperature gradient across the web at the nip. In addition to controlling temperature and pressure on the web, the present invention further controls tension on the web to prevent polymer dissipation, and controls speed of the web such that pressure and temperature dwell time are precisely controlled. Furthermore all of the parameters of operation of the apparatus are electronically recorded for future use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.