Manufacture of insulating products
US4306935A · kind A · utility
1Cited by
12References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1979 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Aug 20, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21J1/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing sheet form insulation products from an aqueous slurry containing calcium silicate comprises the steps of pumping the slurry into a closed mould cavity in a platen filter press, at least one wall of the mould cavity being foraminous to an extent sufficient to allow the escape substantially only of fluid, stopping the pumping at a predetermined level of back pressure in the mould cavity, followed by closing the press to reduce at least one dimension of the mould cavity a prechosen amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.