| 摘要 |
The present invention relates to a safety envelope (1) for foaming resins that release dangerous gases, especially phenolic and urea-formaldehyde resins, in which envelope the components of the foam (2, 3) are mixed, especially for the production of wedging, blocking or damming devices. Envelope characterised in that it is provided, preferably in its upper portion, with a safety device (4) producing the filtering and the fixing of the toxic gases released during the foaming reaction. <IMAGE> |
