Method for determining the surface weight of a mineral wool mat
US4240815A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1979 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Apr 24, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G17/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method is provided for improving the uniformity of the surface weight of a mineral wool mat. The mat is produced from a mineral melt which is converted into fibers, these fibers being introduced into a gas-formed stream providing a transport medium for these fibers. The transport medium and the mineral fibers carried thereby are transported to a moveable collector band on one side of which the mineral wool is deposited so as to form the mineral wool mat, the transport medium being caused to pass through the collector band by means of a fan or the like. The method comprises measuring at least one variable which is characteristic of the transport medium and which varies in relationship to the amount of mineral wool deposited. Examples of such a variable include the pressure drop across the transport medium when passing through the mineral wool mat, the rise in temperature of the transport medium due to heat transfer from the mineral material, and the power supplied to the fan which provides movement of the transport medium. The results of the measuring step are fed to a control device for controlling the speed of movement of the collector band such that the speed of the collector b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.