Method of heating polyvinyl chloride using microwaves
US4855553A · kind A · utility
10Cited by
5References
6Claims
0Family size
Inventor
Key dates
| Filing date | Nov 29, 1983 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Nov 29, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2007/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of heating polyvinyl chloride (PVC) using microwaves which is suitable for application in a process for producing PVC film or sheet. The microwave energy is applied to the PVC after the temperature of the PVC has been raised to the point that its intermolecular bonding force has weakened and molecular vibration occurs readily. As a result, uniform heating is obtained throughout the PVC with high energy utilization efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.